appl1 Search Results


88
Thermo Fisher gene exp appl1 mm00507526 m1
Gene Exp Appl1 Mm00507526 M1, supplied by Thermo Fisher, used in various techniques. Bioz Stars score: 88/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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93
Proteintech appl1
Appl1, supplied by Proteintech, used in various techniques. Bioz Stars score: 93/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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93
Santa Cruz Biotechnology appl1
( A ) Confocal fluorescence microscopy of WT and UBA6-KO H4 cells immunostained with antibodies to LC3B and SQSTM1. Scale bar: 10 μm. Punctate structures and colocalization of LC3B with SQSTM1 were observed in WT as well as UBA6-KO cells. ( B ) Confocal fluorescence microscopy showing colocalization of LC3B and WIPI2 in WT and UBA6-KO H4 cells. Scale bar: 10 μm. Nascent phagophores were positive for both proteins, while mature autophagosomes were only positive for LC3B. ( C ) Confocal fluorescence microscopy showing the distribution of ATG9A and TGN46 in WT and UBA6-KO H4 cells. Scale bar: 10 μm. In both cell lines, the majority of ATG9A localized to trans -Golgi network (TGN) and peripheral vesicles. ( D–J ) Confocal fluorescence microscopy of WT and UBA6-KO cells immunostained with antibodies to calnexin (endoplasmic reticulum) ( D ), GM130 (Golgi apparatus) ( E ), TOM20 (mitochondria) ( F ), Rab5, <t>APPL1,</t> EEA1 (early endosomes) ( G, H ), LAMP1, LAMTOR4 (late endosomes and lysosomes) ( I ) and β-tubulin (microtubules) ( J ), and with phalloidin (F-actin) ( J ). Scale bars: 10 μm. No obvious differences in staining for these markers were observed in UBA6-KO cells relative to WT cells.
Appl1, supplied by Santa Cruz Biotechnology, used in various techniques. Bioz Stars score: 93/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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93
Addgene inc appl1
( A ) Confocal fluorescence microscopy of WT and UBA6-KO H4 cells immunostained with antibodies to LC3B and SQSTM1. Scale bar: 10 μm. Punctate structures and colocalization of LC3B with SQSTM1 were observed in WT as well as UBA6-KO cells. ( B ) Confocal fluorescence microscopy showing colocalization of LC3B and WIPI2 in WT and UBA6-KO H4 cells. Scale bar: 10 μm. Nascent phagophores were positive for both proteins, while mature autophagosomes were only positive for LC3B. ( C ) Confocal fluorescence microscopy showing the distribution of ATG9A and TGN46 in WT and UBA6-KO H4 cells. Scale bar: 10 μm. In both cell lines, the majority of ATG9A localized to trans -Golgi network (TGN) and peripheral vesicles. ( D–J ) Confocal fluorescence microscopy of WT and UBA6-KO cells immunostained with antibodies to calnexin (endoplasmic reticulum) ( D ), GM130 (Golgi apparatus) ( E ), TOM20 (mitochondria) ( F ), Rab5, <t>APPL1,</t> EEA1 (early endosomes) ( G, H ), LAMP1, LAMTOR4 (late endosomes and lysosomes) ( I ) and β-tubulin (microtubules) ( J ), and with phalloidin (F-actin) ( J ). Scale bars: 10 μm. No obvious differences in staining for these markers were observed in UBA6-KO cells relative to WT cells.
Appl1, supplied by Addgene inc, used in various techniques. Bioz Stars score: 93/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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95
Cell Signaling Technology Inc immunoblotting appl1
Results from the univariate survival analysis in PRAD. (a) Survival analysis log-rank test results. Bar plot shows the −log10 p-values obtained for molecular and clinical features, based on univariate analysis including the full PRAD cohort. Only features found to be significantly associated with at least one clinical endpoint are shown. Dashed line indicates the threshold for significant features. (b) Kaplan-Meier curves for the top four predictive molecular features for progression-free interval (PFI) based on univariate analysis including the full PRAD cohort. (c) PC-3 U cells were synchronized by double thymidine block and treated with or without <t>APPL1</t> and APPL2 siRNA. Cells were released into fresh growth medium and cell lysates were prepared at different times for immunoblot analysis. (d) PC-3 U cells were transfected with or without APPL1 and APPL2 siRNA, incubated with nocodazole for 12 h, and then immunoblot analysis was performed.
Immunoblotting Appl1, supplied by Cell Signaling Technology Inc, used in various techniques. Bioz Stars score: 95/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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90
Addgene inc mrfp human appl1
Models of cargo trafficking through APPL and EEA1 compartments. (A) In model 1, the APPL compartment serves as an intermediate en route to EEA1-positive endosomes. Cargo first binds to receptors on the PM and is internalized via CDE or CIE. The CDE includes formation of CCPs and internalization CCVs. Some CCVs acquire <t>APPL1</t> or fuse with APPL1 membranes. Other CCVs and CIV directly fuse with EEA1 endosomes. APPL1 vesicles directly (10% through an APPL1+EEA1 double-positive endocytic intermediate [A & E]) or indirectly (47%+43%) convert into EEA1 endosomes. Cargo can be recycled to the surface via recycling endosomes (RE) or transported to late endosomes (LE) and lysosomes for degradation. Blue and red arrows demark transport of Tf and EGF, respectively. Black arrows, steps that must be common for both cargos. (B) In model 2, APPL1 endosomes that were not accounted in the literature (43%) constitute a stable endocytic compartment. These endosomes sort cargo for recycling and bi-directionally exchange of cargo with EEA1 endosomes through APPL1+EEA1 double-positive endosomes. Transition to late endocytic compartment occurs through EEA1 by conversion mechanism.
Mrfp Human Appl1, supplied by Addgene inc, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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90
OriGene anti appl1 origene ta807768
Models of cargo trafficking through APPL and EEA1 compartments. (A) In model 1, the APPL compartment serves as an intermediate en route to EEA1-positive endosomes. Cargo first binds to receptors on the PM and is internalized via CDE or CIE. The CDE includes formation of CCPs and internalization CCVs. Some CCVs acquire <t>APPL1</t> or fuse with APPL1 membranes. Other CCVs and CIV directly fuse with EEA1 endosomes. APPL1 vesicles directly (10% through an APPL1+EEA1 double-positive endocytic intermediate [A & E]) or indirectly (47%+43%) convert into EEA1 endosomes. Cargo can be recycled to the surface via recycling endosomes (RE) or transported to late endosomes (LE) and lysosomes for degradation. Blue and red arrows demark transport of Tf and EGF, respectively. Black arrows, steps that must be common for both cargos. (B) In model 2, APPL1 endosomes that were not accounted in the literature (43%) constitute a stable endocytic compartment. These endosomes sort cargo for recycling and bi-directionally exchange of cargo with EEA1 endosomes through APPL1+EEA1 double-positive endosomes. Transition to late endocytic compartment occurs through EEA1 by conversion mechanism.
Anti Appl1 Origene Ta807768, supplied by OriGene, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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92
Addgene inc n ter mcherry
HeLa cells grown on 100-nm nanostructures and treated with siRNAs [(A) to (C) and (G) to (I)] and/or transfected with constructs [(D), (E), and (G) to (I)]. Quantifications of actin [(B), (E), and (G)] or <t>mCherry</t> (H) fluorescence around 100-nm deformations and corresponding representative Airyscan images [(A), (D), and (I)]. ( A and B ) Effect of CDC42, CIP4, TOCAs (CIP4, FBP17, and FNBP1L), Rac1, clathrin heavy chain, or μ2-adaptin depletion with siRNAs on actin enrichment around deformations. Regions marked by dashed squares, expanded below with individual channels displayed (A, bottom). ( C ) Immunoblots of CDC42, CIP4, FBP17, FNBP1L, Rac1, clathrin heavy chain, and μ2-adaptin document siRNA knockdown efficiency (uncropped blots, see fig. S13). ( D and E ) Effect of transient expression of GFP or individual TOCA proteins (mCherry-CIP4, mCherry-FBP17, or GFP-FNBP1L) on actin enrichment around deformations. ( F ) CIP4 truncation mutants (mCherry-tagged). FL, full-length protein; F-BAR, BAR domain only; F-BAR+, BAR domain with basic region; ∆SH3, lacking SH3 domain; ∆REM1, lacking basic region and REM1 domain; ∆Basic, lacking basic region. ( G to I ) Rescue experiment. Transient expression of free mCherry, mCherry-tagged full-length CIP4, or truncation mutants in cells where endogenous TOCA proteins are depleted. Number of independent experiments, three [(A), (B), and (G) to (I)] or four [(D) and (E)]. Number of deformations ( n ) depicted on each graph. Data are means ± SEM; **** P < 0.0001; *** P < 0.001; ** P < 0.01 [one-way ANOVA with Dunnett’s [(B), (E), and (G)] or Tukey’s (H) multiple comparison test]. White arrowheads, colocalization [(A), (D), and (I)]. Scale bars, 10 μm (A) and 2 μm [(D) and (I)].
N Ter Mcherry, supplied by Addgene inc, used in various techniques. Bioz Stars score: 92/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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n ter mcherry - by Bioz Stars, 2026-05
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85
Thermo Fisher gene exp appl1 hs00179382 m1
HeLa cells grown on 100-nm nanostructures and treated with siRNAs [(A) to (C) and (G) to (I)] and/or transfected with constructs [(D), (E), and (G) to (I)]. Quantifications of actin [(B), (E), and (G)] or <t>mCherry</t> (H) fluorescence around 100-nm deformations and corresponding representative Airyscan images [(A), (D), and (I)]. ( A and B ) Effect of CDC42, CIP4, TOCAs (CIP4, FBP17, and FNBP1L), Rac1, clathrin heavy chain, or μ2-adaptin depletion with siRNAs on actin enrichment around deformations. Regions marked by dashed squares, expanded below with individual channels displayed (A, bottom). ( C ) Immunoblots of CDC42, CIP4, FBP17, FNBP1L, Rac1, clathrin heavy chain, and μ2-adaptin document siRNA knockdown efficiency (uncropped blots, see fig. S13). ( D and E ) Effect of transient expression of GFP or individual TOCA proteins (mCherry-CIP4, mCherry-FBP17, or GFP-FNBP1L) on actin enrichment around deformations. ( F ) CIP4 truncation mutants (mCherry-tagged). FL, full-length protein; F-BAR, BAR domain only; F-BAR+, BAR domain with basic region; ∆SH3, lacking SH3 domain; ∆REM1, lacking basic region and REM1 domain; ∆Basic, lacking basic region. ( G to I ) Rescue experiment. Transient expression of free mCherry, mCherry-tagged full-length CIP4, or truncation mutants in cells where endogenous TOCA proteins are depleted. Number of independent experiments, three [(A), (B), and (G) to (I)] or four [(D) and (E)]. Number of deformations ( n ) depicted on each graph. Data are means ± SEM; **** P < 0.0001; *** P < 0.001; ** P < 0.01 [one-way ANOVA with Dunnett’s [(B), (E), and (G)] or Tukey’s (H) multiple comparison test]. White arrowheads, colocalization [(A), (D), and (I)]. Scale bars, 10 μm (A) and 2 μm [(D) and (I)].
Gene Exp Appl1 Hs00179382 M1, supplied by Thermo Fisher, used in various techniques. Bioz Stars score: 85/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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93
Santa Cruz Biotechnology murine appl1 shrna lentiviral particles
HeLa cells grown on 100-nm nanostructures and treated with siRNAs [(A) to (C) and (G) to (I)] and/or transfected with constructs [(D), (E), and (G) to (I)]. Quantifications of actin [(B), (E), and (G)] or <t>mCherry</t> (H) fluorescence around 100-nm deformations and corresponding representative Airyscan images [(A), (D), and (I)]. ( A and B ) Effect of CDC42, CIP4, TOCAs (CIP4, FBP17, and FNBP1L), Rac1, clathrin heavy chain, or μ2-adaptin depletion with siRNAs on actin enrichment around deformations. Regions marked by dashed squares, expanded below with individual channels displayed (A, bottom). ( C ) Immunoblots of CDC42, CIP4, FBP17, FNBP1L, Rac1, clathrin heavy chain, and μ2-adaptin document siRNA knockdown efficiency (uncropped blots, see fig. S13). ( D and E ) Effect of transient expression of GFP or individual TOCA proteins (mCherry-CIP4, mCherry-FBP17, or GFP-FNBP1L) on actin enrichment around deformations. ( F ) CIP4 truncation mutants (mCherry-tagged). FL, full-length protein; F-BAR, BAR domain only; F-BAR+, BAR domain with basic region; ∆SH3, lacking SH3 domain; ∆REM1, lacking basic region and REM1 domain; ∆Basic, lacking basic region. ( G to I ) Rescue experiment. Transient expression of free mCherry, mCherry-tagged full-length CIP4, or truncation mutants in cells where endogenous TOCA proteins are depleted. Number of independent experiments, three [(A), (B), and (G) to (I)] or four [(D) and (E)]. Number of deformations ( n ) depicted on each graph. Data are means ± SEM; **** P < 0.0001; *** P < 0.001; ** P < 0.01 [one-way ANOVA with Dunnett’s [(B), (E), and (G)] or Tukey’s (H) multiple comparison test]. White arrowheads, colocalization [(A), (D), and (I)]. Scale bars, 10 μm (A) and 2 μm [(D) and (I)].
Murine Appl1 Shrna Lentiviral Particles, supplied by Santa Cruz Biotechnology, used in various techniques. Bioz Stars score: 93/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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92
Addgene inc egfp appl1 δptb
HeLa cells grown on 100-nm nanostructures and treated with siRNAs [(A) to (C) and (G) to (I)] and/or transfected with constructs [(D), (E), and (G) to (I)]. Quantifications of actin [(B), (E), and (G)] or <t>mCherry</t> (H) fluorescence around 100-nm deformations and corresponding representative Airyscan images [(A), (D), and (I)]. ( A and B ) Effect of CDC42, CIP4, TOCAs (CIP4, FBP17, and FNBP1L), Rac1, clathrin heavy chain, or μ2-adaptin depletion with siRNAs on actin enrichment around deformations. Regions marked by dashed squares, expanded below with individual channels displayed (A, bottom). ( C ) Immunoblots of CDC42, CIP4, FBP17, FNBP1L, Rac1, clathrin heavy chain, and μ2-adaptin document siRNA knockdown efficiency (uncropped blots, see fig. S13). ( D and E ) Effect of transient expression of GFP or individual TOCA proteins (mCherry-CIP4, mCherry-FBP17, or GFP-FNBP1L) on actin enrichment around deformations. ( F ) CIP4 truncation mutants (mCherry-tagged). FL, full-length protein; F-BAR, BAR domain only; F-BAR+, BAR domain with basic region; ∆SH3, lacking SH3 domain; ∆REM1, lacking basic region and REM1 domain; ∆Basic, lacking basic region. ( G to I ) Rescue experiment. Transient expression of free mCherry, mCherry-tagged full-length CIP4, or truncation mutants in cells where endogenous TOCA proteins are depleted. Number of independent experiments, three [(A), (B), and (G) to (I)] or four [(D) and (E)]. Number of deformations ( n ) depicted on each graph. Data are means ± SEM; **** P < 0.0001; *** P < 0.001; ** P < 0.01 [one-way ANOVA with Dunnett’s [(B), (E), and (G)] or Tukey’s (H) multiple comparison test]. White arrowheads, colocalization [(A), (D), and (I)]. Scale bars, 10 μm (A) and 2 μm [(D) and (I)].
Egfp Appl1 δptb, supplied by Addgene inc, used in various techniques. Bioz Stars score: 92/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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94
Thermo Fisher gene exp appl1 rn01401841 m1
HeLa cells grown on 100-nm nanostructures and treated with siRNAs [(A) to (C) and (G) to (I)] and/or transfected with constructs [(D), (E), and (G) to (I)]. Quantifications of actin [(B), (E), and (G)] or <t>mCherry</t> (H) fluorescence around 100-nm deformations and corresponding representative Airyscan images [(A), (D), and (I)]. ( A and B ) Effect of CDC42, CIP4, TOCAs (CIP4, FBP17, and FNBP1L), Rac1, clathrin heavy chain, or μ2-adaptin depletion with siRNAs on actin enrichment around deformations. Regions marked by dashed squares, expanded below with individual channels displayed (A, bottom). ( C ) Immunoblots of CDC42, CIP4, FBP17, FNBP1L, Rac1, clathrin heavy chain, and μ2-adaptin document siRNA knockdown efficiency (uncropped blots, see fig. S13). ( D and E ) Effect of transient expression of GFP or individual TOCA proteins (mCherry-CIP4, mCherry-FBP17, or GFP-FNBP1L) on actin enrichment around deformations. ( F ) CIP4 truncation mutants (mCherry-tagged). FL, full-length protein; F-BAR, BAR domain only; F-BAR+, BAR domain with basic region; ∆SH3, lacking SH3 domain; ∆REM1, lacking basic region and REM1 domain; ∆Basic, lacking basic region. ( G to I ) Rescue experiment. Transient expression of free mCherry, mCherry-tagged full-length CIP4, or truncation mutants in cells where endogenous TOCA proteins are depleted. Number of independent experiments, three [(A), (B), and (G) to (I)] or four [(D) and (E)]. Number of deformations ( n ) depicted on each graph. Data are means ± SEM; **** P < 0.0001; *** P < 0.001; ** P < 0.01 [one-way ANOVA with Dunnett’s [(B), (E), and (G)] or Tukey’s (H) multiple comparison test]. White arrowheads, colocalization [(A), (D), and (I)]. Scale bars, 10 μm (A) and 2 μm [(D) and (I)].
Gene Exp Appl1 Rn01401841 M1, supplied by Thermo Fisher, used in various techniques. Bioz Stars score: 94/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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Image Search Results


( A ) Confocal fluorescence microscopy of WT and UBA6-KO H4 cells immunostained with antibodies to LC3B and SQSTM1. Scale bar: 10 μm. Punctate structures and colocalization of LC3B with SQSTM1 were observed in WT as well as UBA6-KO cells. ( B ) Confocal fluorescence microscopy showing colocalization of LC3B and WIPI2 in WT and UBA6-KO H4 cells. Scale bar: 10 μm. Nascent phagophores were positive for both proteins, while mature autophagosomes were only positive for LC3B. ( C ) Confocal fluorescence microscopy showing the distribution of ATG9A and TGN46 in WT and UBA6-KO H4 cells. Scale bar: 10 μm. In both cell lines, the majority of ATG9A localized to trans -Golgi network (TGN) and peripheral vesicles. ( D–J ) Confocal fluorescence microscopy of WT and UBA6-KO cells immunostained with antibodies to calnexin (endoplasmic reticulum) ( D ), GM130 (Golgi apparatus) ( E ), TOM20 (mitochondria) ( F ), Rab5, APPL1, EEA1 (early endosomes) ( G, H ), LAMP1, LAMTOR4 (late endosomes and lysosomes) ( I ) and β-tubulin (microtubules) ( J ), and with phalloidin (F-actin) ( J ). Scale bars: 10 μm. No obvious differences in staining for these markers were observed in UBA6-KO cells relative to WT cells.

Journal: eLife

Article Title: Negative regulation of autophagy by UBA6-BIRC6–mediated ubiquitination of LC3

doi: 10.7554/eLife.50034

Figure Lengend Snippet: ( A ) Confocal fluorescence microscopy of WT and UBA6-KO H4 cells immunostained with antibodies to LC3B and SQSTM1. Scale bar: 10 μm. Punctate structures and colocalization of LC3B with SQSTM1 were observed in WT as well as UBA6-KO cells. ( B ) Confocal fluorescence microscopy showing colocalization of LC3B and WIPI2 in WT and UBA6-KO H4 cells. Scale bar: 10 μm. Nascent phagophores were positive for both proteins, while mature autophagosomes were only positive for LC3B. ( C ) Confocal fluorescence microscopy showing the distribution of ATG9A and TGN46 in WT and UBA6-KO H4 cells. Scale bar: 10 μm. In both cell lines, the majority of ATG9A localized to trans -Golgi network (TGN) and peripheral vesicles. ( D–J ) Confocal fluorescence microscopy of WT and UBA6-KO cells immunostained with antibodies to calnexin (endoplasmic reticulum) ( D ), GM130 (Golgi apparatus) ( E ), TOM20 (mitochondria) ( F ), Rab5, APPL1, EEA1 (early endosomes) ( G, H ), LAMP1, LAMTOR4 (late endosomes and lysosomes) ( I ) and β-tubulin (microtubules) ( J ), and with phalloidin (F-actin) ( J ). Scale bars: 10 μm. No obvious differences in staining for these markers were observed in UBA6-KO cells relative to WT cells.

Article Snippet: Antibodies to the following antigens (supplier and catalog information in parentheses) were used in the supplementary experiments: LC3A (Cell Signaling Technology, 4599), GABARAP (Cell Signaling Technology, 13733), GABARAPL1 (Cell Signaling Technology, 26632), ATG7 (Cell Signaling Technology, 8558), ATG3 (Cell Signaling Technology, 3415), ATG16L1 (Cell Signaling Technology, 8089), ATG5 (Cell Signaling Technology, 12994), ATG12 (Cell Signaling Technology, 4180), WIPI2 (Bio-Rad, MCA5780), p-BECN1 (Abbiotec, 254515), BECN1 (Cell Signaling Technology, 3495), ATG14 (MBL International, PD026), p-ATG13 (Rockland Immunochemicals, 600–401 C49S), ATG13 (Cell Signaling Technology, 13468), p-ULK1 (Cell Signaling Technology, 12753), ULK1 (Cell Signaling Technology, 8054), p-S6K (Cell Signaling Technology, 9234), S6K (Cell Signaling Technology, 2708), p-4EBP (Cell Signaling Technology, 2855), 4EBP (Cell Signaling Technology, 9452), p-TSC2 (Cell Signaling Technology, 3617), TSC2 (Cell Signaling Technology, 4308), p-AKT (Cell Signaling Technology, 13038), AKT (Cell Signaling Technology, 4691), ATG9A (Cell Signaling Technology, 9730), TGN46 (Bio-Rad, AHP500GT), Calnexin (EMD Millipore, MAB3126), GM130 (BD Biosciences, 610823), LAMTOR4 (Cell Signaling Technology, 12284), Rab5 (Cell Signaling Technology, 2143), APPL1 (Santa Cruz Biotechnology, sc-271901), EEA1 (Cell Signaling Technology, 3288), Alexa Fluor 647 Phalloidin (ThermoFisher Scientific, A22287), Lamin A/C (Cell Signaling Technology, 4777), KIF5B (Abcam, ab167429).

Techniques: Fluorescence, Microscopy, Staining

Results from the univariate survival analysis in PRAD. (a) Survival analysis log-rank test results. Bar plot shows the −log10 p-values obtained for molecular and clinical features, based on univariate analysis including the full PRAD cohort. Only features found to be significantly associated with at least one clinical endpoint are shown. Dashed line indicates the threshold for significant features. (b) Kaplan-Meier curves for the top four predictive molecular features for progression-free interval (PFI) based on univariate analysis including the full PRAD cohort. (c) PC-3 U cells were synchronized by double thymidine block and treated with or without APPL1 and APPL2 siRNA. Cells were released into fresh growth medium and cell lysates were prepared at different times for immunoblot analysis. (d) PC-3 U cells were transfected with or without APPL1 and APPL2 siRNA, incubated with nocodazole for 12 h, and then immunoblot analysis was performed.

Journal: Cell Cycle

Article Title: Identification of progression markers for prostate cancer

doi: 10.1080/15384101.2025.2563930

Figure Lengend Snippet: Results from the univariate survival analysis in PRAD. (a) Survival analysis log-rank test results. Bar plot shows the −log10 p-values obtained for molecular and clinical features, based on univariate analysis including the full PRAD cohort. Only features found to be significantly associated with at least one clinical endpoint are shown. Dashed line indicates the threshold for significant features. (b) Kaplan-Meier curves for the top four predictive molecular features for progression-free interval (PFI) based on univariate analysis including the full PRAD cohort. (c) PC-3 U cells were synchronized by double thymidine block and treated with or without APPL1 and APPL2 siRNA. Cells were released into fresh growth medium and cell lysates were prepared at different times for immunoblot analysis. (d) PC-3 U cells were transfected with or without APPL1 and APPL2 siRNA, incubated with nocodazole for 12 h, and then immunoblot analysis was performed.

Article Snippet: Antibodies against the following proteins were used for immunoblotting: APPL1 (Cell Signaling Technology Cat# 3858), APPL2 (Santa Cruz Biotechnology Cat# sc-67403, RRID:AB_2056383), VPS4A (Abcam Cat #ab229806), VPS4B (Abcam Cat #ab137027), β-tubulin (Cell Signaling Technology Cat# 2146, RRID:AB_2210545), and Horseradish peroxidase – coupled secondary antibodies were purchased from Dako and Protein-G Sepharose and ECL immunoblotting detection reagents from GE Healthcare.

Techniques: Blocking Assay, Western Blot, Transfection, Incubation

Models of cargo trafficking through APPL and EEA1 compartments. (A) In model 1, the APPL compartment serves as an intermediate en route to EEA1-positive endosomes. Cargo first binds to receptors on the PM and is internalized via CDE or CIE. The CDE includes formation of CCPs and internalization CCVs. Some CCVs acquire APPL1 or fuse with APPL1 membranes. Other CCVs and CIV directly fuse with EEA1 endosomes. APPL1 vesicles directly (10% through an APPL1+EEA1 double-positive endocytic intermediate [A & E]) or indirectly (47%+43%) convert into EEA1 endosomes. Cargo can be recycled to the surface via recycling endosomes (RE) or transported to late endosomes (LE) and lysosomes for degradation. Blue and red arrows demark transport of Tf and EGF, respectively. Black arrows, steps that must be common for both cargos. (B) In model 2, APPL1 endosomes that were not accounted in the literature (43%) constitute a stable endocytic compartment. These endosomes sort cargo for recycling and bi-directionally exchange of cargo with EEA1 endosomes through APPL1+EEA1 double-positive endosomes. Transition to late endocytic compartment occurs through EEA1 by conversion mechanism.

Journal: The Journal of Cell Biology

Article Title: APPL endosomes are not obligatory endocytic intermediates but act as stable cargo-sorting compartments

doi: 10.1083/jcb.201311117

Figure Lengend Snippet: Models of cargo trafficking through APPL and EEA1 compartments. (A) In model 1, the APPL compartment serves as an intermediate en route to EEA1-positive endosomes. Cargo first binds to receptors on the PM and is internalized via CDE or CIE. The CDE includes formation of CCPs and internalization CCVs. Some CCVs acquire APPL1 or fuse with APPL1 membranes. Other CCVs and CIV directly fuse with EEA1 endosomes. APPL1 vesicles directly (10% through an APPL1+EEA1 double-positive endocytic intermediate [A & E]) or indirectly (47%+43%) convert into EEA1 endosomes. Cargo can be recycled to the surface via recycling endosomes (RE) or transported to late endosomes (LE) and lysosomes for degradation. Blue and red arrows demark transport of Tf and EGF, respectively. Black arrows, steps that must be common for both cargos. (B) In model 2, APPL1 endosomes that were not accounted in the literature (43%) constitute a stable endocytic compartment. These endosomes sort cargo for recycling and bi-directionally exchange of cargo with EEA1 endosomes through APPL1+EEA1 double-positive endosomes. Transition to late endocytic compartment occurs through EEA1 by conversion mechanism.

Article Snippet: HeLa cells were transiently transfected using DreamFect Gold reagent (OZ BioSciences) or Effectene (Qiagen) for 24 h with plasmids pEGFP-C3-APPL1 , pEGFP-C3-Rab5 , mRFP-human APPL1 (a gift from P. De Camilli [Addgene plasmid 22202]) or tagRFP-T-EEA1 (a gift from S. Corvera, University of Massachusetts Medical School, Worcester, MA [Addgene plasmid 42635]) and analyzed 24 h after transfection.

Techniques:

Immunoelectron microscopic localization of APPL1. HeLa cells were labeled with antibodies to APPL1, followed by a Nanogold-labeled conjugate. Gold particles were visualized by silver enhancement. (A) A low-magnification view with two APPL-positive structures circled in orange, one of which is shown at higher magnification in the inset. (B–F) A gallery of representative structures. Dense labeling is associated with small tubular profiles close to the PM or deeper inside the cell as well as with larger heterogeneous structures. Note that labeling of the PM or CCPs is very low. M, mitochondria. Bars: (A, C, and E) 500 nm; (A [inset], B, D, and F) 200 nm.

Journal: The Journal of Cell Biology

Article Title: APPL endosomes are not obligatory endocytic intermediates but act as stable cargo-sorting compartments

doi: 10.1083/jcb.201311117

Figure Lengend Snippet: Immunoelectron microscopic localization of APPL1. HeLa cells were labeled with antibodies to APPL1, followed by a Nanogold-labeled conjugate. Gold particles were visualized by silver enhancement. (A) A low-magnification view with two APPL-positive structures circled in orange, one of which is shown at higher magnification in the inset. (B–F) A gallery of representative structures. Dense labeling is associated with small tubular profiles close to the PM or deeper inside the cell as well as with larger heterogeneous structures. Note that labeling of the PM or CCPs is very low. M, mitochondria. Bars: (A, C, and E) 500 nm; (A [inset], B, D, and F) 200 nm.

Article Snippet: HeLa cells were transiently transfected using DreamFect Gold reagent (OZ BioSciences) or Effectene (Qiagen) for 24 h with plasmids pEGFP-C3-APPL1 , pEGFP-C3-Rab5 , mRFP-human APPL1 (a gift from P. De Camilli [Addgene plasmid 22202]) or tagRFP-T-EEA1 (a gift from S. Corvera, University of Massachusetts Medical School, Worcester, MA [Addgene plasmid 42635]) and analyzed 24 h after transfection.

Techniques: Labeling

Cargo internalization into APPL endosomes is clathrin dependent but their biogenesis is not. (A) Silencing of CHC by RNAi in HeLa cells assessed by Western blot in comparison to EEA1, APPL1, and Rab5 as controls. (B) Internalization of biotinylated Tf (b-Tf) (after 30 min of continuous uptake) is inhibited upon CHC knockdown. The amounts of b-Tf in cell lysates were quantified by electrochemiluminescence. (C ) Knockdown of CHC decreased colocalization of Tf to EEA1 (red) and APPL1 (blue). Colocalization was quantified after 3.5-min chase after 0.5-min internalization pulse of Tf. (D–F) Knockdown of clathrin inhibits Tf uptake but does not affect the number of APPL1-positive vesicles. Example images of endogenous APPL1 and fluorescent Tf at 3.5-min chase after the 30-s internalization pulse in control and clathrin-depleted cells (D). Inset presents full image, yellow rectangle depicts zoomed part. The numbers of vesicles marked by APPL1 (red), Tf (blue) or EGF (green) (E) and their integral intensities (F) are plotted (quantifications based on 80 images and ∼320,000 APPL1 endosomes). (G–I) Dynasore treatment (from 10 to 60 min) does not affect the number of APPL1-positive vesicles but progressively suppresses Tf uptake (10 min of Tf internalization). (G) Example images of HeLa cells treated with Dynasore (80 µM) for 60 min. The numbers of vesicles marked by APPL1 (red) and Tf (blue) (H) and their integral intensities (I) in cells pretreated with Dynasore for the indicated times are plotted (quantifications based on 10 images, ∼110 cells, and ∼45,000 APPL1 endosomes). Bars: (D and G, inset) 10 µm.

Journal: The Journal of Cell Biology

Article Title: APPL endosomes are not obligatory endocytic intermediates but act as stable cargo-sorting compartments

doi: 10.1083/jcb.201311117

Figure Lengend Snippet: Cargo internalization into APPL endosomes is clathrin dependent but their biogenesis is not. (A) Silencing of CHC by RNAi in HeLa cells assessed by Western blot in comparison to EEA1, APPL1, and Rab5 as controls. (B) Internalization of biotinylated Tf (b-Tf) (after 30 min of continuous uptake) is inhibited upon CHC knockdown. The amounts of b-Tf in cell lysates were quantified by electrochemiluminescence. (C ) Knockdown of CHC decreased colocalization of Tf to EEA1 (red) and APPL1 (blue). Colocalization was quantified after 3.5-min chase after 0.5-min internalization pulse of Tf. (D–F) Knockdown of clathrin inhibits Tf uptake but does not affect the number of APPL1-positive vesicles. Example images of endogenous APPL1 and fluorescent Tf at 3.5-min chase after the 30-s internalization pulse in control and clathrin-depleted cells (D). Inset presents full image, yellow rectangle depicts zoomed part. The numbers of vesicles marked by APPL1 (red), Tf (blue) or EGF (green) (E) and their integral intensities (F) are plotted (quantifications based on 80 images and ∼320,000 APPL1 endosomes). (G–I) Dynasore treatment (from 10 to 60 min) does not affect the number of APPL1-positive vesicles but progressively suppresses Tf uptake (10 min of Tf internalization). (G) Example images of HeLa cells treated with Dynasore (80 µM) for 60 min. The numbers of vesicles marked by APPL1 (red) and Tf (blue) (H) and their integral intensities (I) in cells pretreated with Dynasore for the indicated times are plotted (quantifications based on 10 images, ∼110 cells, and ∼45,000 APPL1 endosomes). Bars: (D and G, inset) 10 µm.

Article Snippet: HeLa cells were transiently transfected using DreamFect Gold reagent (OZ BioSciences) or Effectene (Qiagen) for 24 h with plasmids pEGFP-C3-APPL1 , pEGFP-C3-Rab5 , mRFP-human APPL1 (a gift from P. De Camilli [Addgene plasmid 22202]) or tagRFP-T-EEA1 (a gift from S. Corvera, University of Massachusetts Medical School, Worcester, MA [Addgene plasmid 42635]) and analyzed 24 h after transfection.

Techniques: Western Blot, Comparison, Knockdown, Electrochemiluminescence, Control

APPL endosomes are stable structures. (A) Gallery of images showing a long-lived APPL endosome (arrow) containing internalized Tf, tracked for 12 min in HeLa cells expressing EGFP-APPL1 (see Video 1 ). (B) APPL1 (green) endosome with EGF (blue) and Tf (red) sorts Tf from EGF. Tf-positive tubule growing over time and pinched-off from APPL1 endosome (see Video 3 ). (C) Double EEA1 (blue) + APPL1 (green) endosome produces Tf- (red) and APPL1-positive, EEA1-negative tubule (see Video 4 ). Later this tubule was separated from the main endosome body.

Journal: The Journal of Cell Biology

Article Title: APPL endosomes are not obligatory endocytic intermediates but act as stable cargo-sorting compartments

doi: 10.1083/jcb.201311117

Figure Lengend Snippet: APPL endosomes are stable structures. (A) Gallery of images showing a long-lived APPL endosome (arrow) containing internalized Tf, tracked for 12 min in HeLa cells expressing EGFP-APPL1 (see Video 1 ). (B) APPL1 (green) endosome with EGF (blue) and Tf (red) sorts Tf from EGF. Tf-positive tubule growing over time and pinched-off from APPL1 endosome (see Video 3 ). (C) Double EEA1 (blue) + APPL1 (green) endosome produces Tf- (red) and APPL1-positive, EEA1-negative tubule (see Video 4 ). Later this tubule was separated from the main endosome body.

Article Snippet: HeLa cells were transiently transfected using DreamFect Gold reagent (OZ BioSciences) or Effectene (Qiagen) for 24 h with plasmids pEGFP-C3-APPL1 , pEGFP-C3-Rab5 , mRFP-human APPL1 (a gift from P. De Camilli [Addgene plasmid 22202]) or tagRFP-T-EEA1 (a gift from S. Corvera, University of Massachusetts Medical School, Worcester, MA [Addgene plasmid 42635]) and analyzed 24 h after transfection.

Techniques: Expressing

APPL endosomes exhibit features of cargo sorting by live cell imaging. ( A) Sequential images showing an EEA1-positive APPL1-negative vesicle carrying EGF, which fuses with multiple preexisting APPL1 endosomes (see Video 5 ). (B) Sequential images depicting fusion of a double APPL1+EEA1–positive endosome with an APPL1-positive endosome (see Video 6 ). (C) Double APPL1+EEA1 endosome gradually loses APPL1 and converts to EEA1 endosome (see Video 7 ). (D) Double APPL1+EEA1–positive endosome gradually loses EEA1 and converts to APPL1 endosome (see Video 8 ). (E) Relative frequencies of individual events of interaction between APPL1- (A), EEA1- (E), and double APPL1+EEA1 (AE)–positive endosomes (error bars represent SEMs). Data were collected from 34 movies.Total number of events equals 234.

Journal: The Journal of Cell Biology

Article Title: APPL endosomes are not obligatory endocytic intermediates but act as stable cargo-sorting compartments

doi: 10.1083/jcb.201311117

Figure Lengend Snippet: APPL endosomes exhibit features of cargo sorting by live cell imaging. ( A) Sequential images showing an EEA1-positive APPL1-negative vesicle carrying EGF, which fuses with multiple preexisting APPL1 endosomes (see Video 5 ). (B) Sequential images depicting fusion of a double APPL1+EEA1–positive endosome with an APPL1-positive endosome (see Video 6 ). (C) Double APPL1+EEA1 endosome gradually loses APPL1 and converts to EEA1 endosome (see Video 7 ). (D) Double APPL1+EEA1–positive endosome gradually loses EEA1 and converts to APPL1 endosome (see Video 8 ). (E) Relative frequencies of individual events of interaction between APPL1- (A), EEA1- (E), and double APPL1+EEA1 (AE)–positive endosomes (error bars represent SEMs). Data were collected from 34 movies.Total number of events equals 234.

Article Snippet: HeLa cells were transiently transfected using DreamFect Gold reagent (OZ BioSciences) or Effectene (Qiagen) for 24 h with plasmids pEGFP-C3-APPL1 , pEGFP-C3-Rab5 , mRFP-human APPL1 (a gift from P. De Camilli [Addgene plasmid 22202]) or tagRFP-T-EEA1 (a gift from S. Corvera, University of Massachusetts Medical School, Worcester, MA [Addgene plasmid 42635]) and analyzed 24 h after transfection.

Techniques: Live Cell Imaging

Time course of cargo distribution in EEA1- and APPL1-positive structures. Fluorescently labeled Tf and EGF were internalized for 30 s and chased for the indicated periods of time (A). All experimental data are the mean of four independent experiments. The intensity of Tf and EGF colocalized to EEA1 and APPL1 was corrected for apparent (random) colocalization . (B and C) Kinetics of fluorescence intensity of Tf (B) or EGF (C) colocalized with EEA1-positive and APPL1-negative endosomes (red), APPL1-positive and EEA1-negative endosomes (blue), with double EEA1+APPL1–positive endosomes (green) and colocalized with none of them (black). The inset shows the part of the curve corresponding to the initial 3 min of the time course. (D) Time course of colocalization of EGF-with-Tf (magenta) and Tf-with-EGF (green) on all endosomes. (E) Time course of colocalization of EGF-with-Tf (magenta) and Tf-with-EGF (green) on APPL1-positive and EEA1-negative endosomes. This colocalization is defined as the ratio of the amount of EGF colocalized with Tf on APPL1 endosomes to the total amount of EGF on APPL endosomes. The same applies to Tf-with-EGF colocalization on APPL endosomes. Error bars represent SEMs.

Journal: The Journal of Cell Biology

Article Title: APPL endosomes are not obligatory endocytic intermediates but act as stable cargo-sorting compartments

doi: 10.1083/jcb.201311117

Figure Lengend Snippet: Time course of cargo distribution in EEA1- and APPL1-positive structures. Fluorescently labeled Tf and EGF were internalized for 30 s and chased for the indicated periods of time (A). All experimental data are the mean of four independent experiments. The intensity of Tf and EGF colocalized to EEA1 and APPL1 was corrected for apparent (random) colocalization . (B and C) Kinetics of fluorescence intensity of Tf (B) or EGF (C) colocalized with EEA1-positive and APPL1-negative endosomes (red), APPL1-positive and EEA1-negative endosomes (blue), with double EEA1+APPL1–positive endosomes (green) and colocalized with none of them (black). The inset shows the part of the curve corresponding to the initial 3 min of the time course. (D) Time course of colocalization of EGF-with-Tf (magenta) and Tf-with-EGF (green) on all endosomes. (E) Time course of colocalization of EGF-with-Tf (magenta) and Tf-with-EGF (green) on APPL1-positive and EEA1-negative endosomes. This colocalization is defined as the ratio of the amount of EGF colocalized with Tf on APPL1 endosomes to the total amount of EGF on APPL endosomes. The same applies to Tf-with-EGF colocalization on APPL endosomes. Error bars represent SEMs.

Article Snippet: HeLa cells were transiently transfected using DreamFect Gold reagent (OZ BioSciences) or Effectene (Qiagen) for 24 h with plasmids pEGFP-C3-APPL1 , pEGFP-C3-Rab5 , mRFP-human APPL1 (a gift from P. De Camilli [Addgene plasmid 22202]) or tagRFP-T-EEA1 (a gift from S. Corvera, University of Massachusetts Medical School, Worcester, MA [Addgene plasmid 42635]) and analyzed 24 h after transfection.

Techniques: Labeling, Fluorescence

Proposed models of cargo trafficking through APPL and EEA1 compartments. ( A) In model 2, cargo on PM follows either the clathrin pathway through CCPs to CCVs or the clathrin-independent route by CIVs. About 94% of Tf (blue) and 25% of EGF (red) follow CDE. Almost 75% of EGF and only 6% of Tf are internalized by CIVs. In line with model 1, A and B, we considered two pools of CCV that deliver cargo to APPL1-positive (36% EGF and 99.5%Tf) and EEA1-positive (64% EGF, 0.5%Tf) endosomes. The flux of Tf through CCV to EEA1 increased up to 22% by down-regulation of APPL1. The fit of model suggests that CIVs deliver cargo to APPL1+EEA1 and EEA1 endosomes. The dynamic of cargo traffic through EEA1-positive demonstrated complex behavior that cannot be explained in case of kinetically homogeneous compartments. The down-regulation of APPL1 and CHC revealed that cargo traffic consists of two components that can be separately inhibited. Therefore, we introduced in the model 2 two kinetically distinct EEA1 compartments, which we denote EEA1(ccv) and EEA1(civ) according to the main mode of cargo delivery. The corresponding double APPL1+EEA1 compartments were denoted A&E(ccv) and A&E(civ) accordingly. The sorting of cargo toward the recycling route occurs in the all three endocytic compartments APPL1, APPL1+EEA1, and EEA1. However, the delivery of EGF to the late endosomes (LE) and following degradation (∼70% of EGF degrade in 30 min) occurs only through EEA1 compartment. We denote the recycling endosomes en route to PM and perinuclear recycling endosome in accordance to the kinetic rates of either fast recycling endosomes (FRE) or recycling endosomes RE. The thin arrows denote the routes that transport less than 10% of cargo from compartment, however the removal of them makes the fit to the experimental data unsatisfactory (P < 0.01). (B–D) Tables present results of the best fit of model 1A (B), model 1B (C), and model 2 (D) to the experimental data in control and perturbed cell. X 2 /N denotes normalized χ 2 : χ 2 / N = 1 N ∑ i = 1 N + 1 ( f i − d i ) 2 σ i 2 , where f i and d i are model prediction and experimental data, σ i is SEM of experimental data, N = 167. The p-values were calculated by χ 2 distribution. (B) The probability of null hypothesis that the deviation of the model prediction from the experiment is the result of random noise (p-value) is extremely low for all four conditions. Therefore, model 1A has to be rejected. (C) The probability of null hypothesis is very low for all conditions, although the logarithm of probability of model 1B (see Materials and methods) is much higher than those of 1A. Nevertheless, model 1B has to be rejected as well. (D) The probability of null hypothesis is high. Therefore, most probably the deviation of model 2 from the experiment is the result of experimental uncertainty. The model 2 is much more probable ln( P ) > 100 than model 1B for all conditions. Therefore, the improvement of the quality of fit is statistically significant to justify three additional parameters.

Journal: The Journal of Cell Biology

Article Title: APPL endosomes are not obligatory endocytic intermediates but act as stable cargo-sorting compartments

doi: 10.1083/jcb.201311117

Figure Lengend Snippet: Proposed models of cargo trafficking through APPL and EEA1 compartments. ( A) In model 2, cargo on PM follows either the clathrin pathway through CCPs to CCVs or the clathrin-independent route by CIVs. About 94% of Tf (blue) and 25% of EGF (red) follow CDE. Almost 75% of EGF and only 6% of Tf are internalized by CIVs. In line with model 1, A and B, we considered two pools of CCV that deliver cargo to APPL1-positive (36% EGF and 99.5%Tf) and EEA1-positive (64% EGF, 0.5%Tf) endosomes. The flux of Tf through CCV to EEA1 increased up to 22% by down-regulation of APPL1. The fit of model suggests that CIVs deliver cargo to APPL1+EEA1 and EEA1 endosomes. The dynamic of cargo traffic through EEA1-positive demonstrated complex behavior that cannot be explained in case of kinetically homogeneous compartments. The down-regulation of APPL1 and CHC revealed that cargo traffic consists of two components that can be separately inhibited. Therefore, we introduced in the model 2 two kinetically distinct EEA1 compartments, which we denote EEA1(ccv) and EEA1(civ) according to the main mode of cargo delivery. The corresponding double APPL1+EEA1 compartments were denoted A&E(ccv) and A&E(civ) accordingly. The sorting of cargo toward the recycling route occurs in the all three endocytic compartments APPL1, APPL1+EEA1, and EEA1. However, the delivery of EGF to the late endosomes (LE) and following degradation (∼70% of EGF degrade in 30 min) occurs only through EEA1 compartment. We denote the recycling endosomes en route to PM and perinuclear recycling endosome in accordance to the kinetic rates of either fast recycling endosomes (FRE) or recycling endosomes RE. The thin arrows denote the routes that transport less than 10% of cargo from compartment, however the removal of them makes the fit to the experimental data unsatisfactory (P < 0.01). (B–D) Tables present results of the best fit of model 1A (B), model 1B (C), and model 2 (D) to the experimental data in control and perturbed cell. X 2 /N denotes normalized χ 2 : χ 2 / N = 1 N ∑ i = 1 N + 1 ( f i − d i ) 2 σ i 2 , where f i and d i are model prediction and experimental data, σ i is SEM of experimental data, N = 167. The p-values were calculated by χ 2 distribution. (B) The probability of null hypothesis that the deviation of the model prediction from the experiment is the result of random noise (p-value) is extremely low for all four conditions. Therefore, model 1A has to be rejected. (C) The probability of null hypothesis is very low for all conditions, although the logarithm of probability of model 1B (see Materials and methods) is much higher than those of 1A. Nevertheless, model 1B has to be rejected as well. (D) The probability of null hypothesis is high. Therefore, most probably the deviation of model 2 from the experiment is the result of experimental uncertainty. The model 2 is much more probable ln( P ) > 100 than model 1B for all conditions. Therefore, the improvement of the quality of fit is statistically significant to justify three additional parameters.

Article Snippet: HeLa cells were transiently transfected using DreamFect Gold reagent (OZ BioSciences) or Effectene (Qiagen) for 24 h with plasmids pEGFP-C3-APPL1 , pEGFP-C3-Rab5 , mRFP-human APPL1 (a gift from P. De Camilli [Addgene plasmid 22202]) or tagRFP-T-EEA1 (a gift from S. Corvera, University of Massachusetts Medical School, Worcester, MA [Addgene plasmid 42635]) and analyzed 24 h after transfection.

Techniques: Control

Time course of Tf (A, C, and E) and EGF (B, D, and F) distribution in EEA1- and APPL1-positive structures under down-regulation of CHC, APPL1, and EEA1. Cells were transfected by siRNA for CHC (A and B), APPL1 (C and D) and EEA1 (E and F) for 48 h (see Materials and methods). Then fluorescently labeled Tf and EGF were internalized and chased as described in . Solid circles present the integral intensity of cargo colocalized with EEA1- (red), APPL1- (blue), and double APPL1+EEA1–positive endosomes (green). The control curves are presented by empty squares. Down-regulation of CHC, APPL1, and EEA1 was 95%, 70%, and 90%, respectively. Traffic of cargo in the control condition is repeatedly presented on panels A–F by empty squares. (G) Integral intensity of EGF colocalized with EEA1 under CHC knockdown (green) and APPL1 knockdown (blue). Sum of blue and green curves (sum of integral intensities of EGF colocalized with EEA1 upon APPL1 or CHC knockdown) is plotted by solid black circles. The time course of integral intensities of EGF colocalized with EEA1 for control is plotted by red squares.

Journal: The Journal of Cell Biology

Article Title: APPL endosomes are not obligatory endocytic intermediates but act as stable cargo-sorting compartments

doi: 10.1083/jcb.201311117

Figure Lengend Snippet: Time course of Tf (A, C, and E) and EGF (B, D, and F) distribution in EEA1- and APPL1-positive structures under down-regulation of CHC, APPL1, and EEA1. Cells were transfected by siRNA for CHC (A and B), APPL1 (C and D) and EEA1 (E and F) for 48 h (see Materials and methods). Then fluorescently labeled Tf and EGF were internalized and chased as described in . Solid circles present the integral intensity of cargo colocalized with EEA1- (red), APPL1- (blue), and double APPL1+EEA1–positive endosomes (green). The control curves are presented by empty squares. Down-regulation of CHC, APPL1, and EEA1 was 95%, 70%, and 90%, respectively. Traffic of cargo in the control condition is repeatedly presented on panels A–F by empty squares. (G) Integral intensity of EGF colocalized with EEA1 under CHC knockdown (green) and APPL1 knockdown (blue). Sum of blue and green curves (sum of integral intensities of EGF colocalized with EEA1 upon APPL1 or CHC knockdown) is plotted by solid black circles. The time course of integral intensities of EGF colocalized with EEA1 for control is plotted by red squares.

Article Snippet: HeLa cells were transiently transfected using DreamFect Gold reagent (OZ BioSciences) or Effectene (Qiagen) for 24 h with plasmids pEGFP-C3-APPL1 , pEGFP-C3-Rab5 , mRFP-human APPL1 (a gift from P. De Camilli [Addgene plasmid 22202]) or tagRFP-T-EEA1 (a gift from S. Corvera, University of Massachusetts Medical School, Worcester, MA [Addgene plasmid 42635]) and analyzed 24 h after transfection.

Techniques: Transfection, Labeling, Control, Knockdown

HeLa cells grown on 100-nm nanostructures and treated with siRNAs [(A) to (C) and (G) to (I)] and/or transfected with constructs [(D), (E), and (G) to (I)]. Quantifications of actin [(B), (E), and (G)] or mCherry (H) fluorescence around 100-nm deformations and corresponding representative Airyscan images [(A), (D), and (I)]. ( A and B ) Effect of CDC42, CIP4, TOCAs (CIP4, FBP17, and FNBP1L), Rac1, clathrin heavy chain, or μ2-adaptin depletion with siRNAs on actin enrichment around deformations. Regions marked by dashed squares, expanded below with individual channels displayed (A, bottom). ( C ) Immunoblots of CDC42, CIP4, FBP17, FNBP1L, Rac1, clathrin heavy chain, and μ2-adaptin document siRNA knockdown efficiency (uncropped blots, see fig. S13). ( D and E ) Effect of transient expression of GFP or individual TOCA proteins (mCherry-CIP4, mCherry-FBP17, or GFP-FNBP1L) on actin enrichment around deformations. ( F ) CIP4 truncation mutants (mCherry-tagged). FL, full-length protein; F-BAR, BAR domain only; F-BAR+, BAR domain with basic region; ∆SH3, lacking SH3 domain; ∆REM1, lacking basic region and REM1 domain; ∆Basic, lacking basic region. ( G to I ) Rescue experiment. Transient expression of free mCherry, mCherry-tagged full-length CIP4, or truncation mutants in cells where endogenous TOCA proteins are depleted. Number of independent experiments, three [(A), (B), and (G) to (I)] or four [(D) and (E)]. Number of deformations ( n ) depicted on each graph. Data are means ± SEM; **** P < 0.0001; *** P < 0.001; ** P < 0.01 [one-way ANOVA with Dunnett’s [(B), (E), and (G)] or Tukey’s (H) multiple comparison test]. White arrowheads, colocalization [(A), (D), and (I)]. Scale bars, 10 μm (A) and 2 μm [(D) and (I)].

Journal: Science Advances

Article Title: Plasma membrane nanodeformations promote actin polymerization through CIP4/CDC42 recruitment and regulate type II IFN signaling

doi: 10.1126/sciadv.ade1660

Figure Lengend Snippet: HeLa cells grown on 100-nm nanostructures and treated with siRNAs [(A) to (C) and (G) to (I)] and/or transfected with constructs [(D), (E), and (G) to (I)]. Quantifications of actin [(B), (E), and (G)] or mCherry (H) fluorescence around 100-nm deformations and corresponding representative Airyscan images [(A), (D), and (I)]. ( A and B ) Effect of CDC42, CIP4, TOCAs (CIP4, FBP17, and FNBP1L), Rac1, clathrin heavy chain, or μ2-adaptin depletion with siRNAs on actin enrichment around deformations. Regions marked by dashed squares, expanded below with individual channels displayed (A, bottom). ( C ) Immunoblots of CDC42, CIP4, FBP17, FNBP1L, Rac1, clathrin heavy chain, and μ2-adaptin document siRNA knockdown efficiency (uncropped blots, see fig. S13). ( D and E ) Effect of transient expression of GFP or individual TOCA proteins (mCherry-CIP4, mCherry-FBP17, or GFP-FNBP1L) on actin enrichment around deformations. ( F ) CIP4 truncation mutants (mCherry-tagged). FL, full-length protein; F-BAR, BAR domain only; F-BAR+, BAR domain with basic region; ∆SH3, lacking SH3 domain; ∆REM1, lacking basic region and REM1 domain; ∆Basic, lacking basic region. ( G to I ) Rescue experiment. Transient expression of free mCherry, mCherry-tagged full-length CIP4, or truncation mutants in cells where endogenous TOCA proteins are depleted. Number of independent experiments, three [(A), (B), and (G) to (I)] or four [(D) and (E)]. Number of deformations ( n ) depicted on each graph. Data are means ± SEM; **** P < 0.0001; *** P < 0.001; ** P < 0.01 [one-way ANOVA with Dunnett’s [(B), (E), and (G)] or Tukey’s (H) multiple comparison test]. White arrowheads, colocalization [(A), (D), and (I)]. Scale bars, 10 μm (A) and 2 μm [(D) and (I)].

Article Snippet: APPL1 , Mouse , pmCherry-C1 , CMV , N-ter mCherry , Addgene #27683 , .

Techniques: Transfection, Construct, Fluorescence, Western Blot, Knockdown, Expressing, Comparison

( A to D ) Representative Airyscan time lapses and corresponding quantifications of enrichment ratios of the following pairs around 100-nm deformations over time: (A) GFP-CDC42 and LifeAct-mCherry, (B) GFP-CDC42 and mCherry-CIP4, (C) LifeAct-GFP and mCherry-CIP4, and (D) LifeAct-GFP and PalMyr-mCherry (PalMyr). Thirty-minute time-lapses with 15-s intervals between frames. Region size, 0.85 μm. ( E ) Correlation coefficients between the pairs of proteins shown in (A) to (D). Number of deformations: PalMyr/LifeAct, n = 65; CIP4/CDC42, n = 118; CIP4/LifeAct, n = 83; LifeAct/CDC42, n = 145. Three independent experiments. ( F and G ) Monitoring of CDC42-dependent actin polymerization upon deformation of the plasma membrane by FluidFM. (F) Quantification of normalized LifeAct-mCherry fluorescence intensity around FluidFM tip over time upon coexpression of GFP (control, black), GFP-CDC42-T17N (red), GFP-CDC42-WT (blue), or GFP-CDC42-Q61L (green). Ten-minute time-lapses with 9-s intervals between frames. Number of cells: GFP, n = 20; GFP-CDC42-T17N, n = 18; GFP-CDC42-WT, n = 15; GFP-CDC42-Q61L, n = 17. Two independent experiments. (G) Representative image of FluidFM/confocal experiments upon coexpression of GFP-CDC42-Q61L and LifeAct-mCherry. Region marked by a dashed square surrounding the bead, expanded below at the indicated time points; t = 0 min, initial deformation of the cell membrane. TL, transmitted light (FluidFM cantilever) (representative images of GFP, GFP-CDC42-T17N, and GFP-CDC42-WT in fig. S11, F to H). Data are means ± SEM; **** P < 0.0001 (E, one-way ANOVA with Dunnett’s multiple comparison test). Scale bar, 10 μm (G).

Journal: Science Advances

Article Title: Plasma membrane nanodeformations promote actin polymerization through CIP4/CDC42 recruitment and regulate type II IFN signaling

doi: 10.1126/sciadv.ade1660

Figure Lengend Snippet: ( A to D ) Representative Airyscan time lapses and corresponding quantifications of enrichment ratios of the following pairs around 100-nm deformations over time: (A) GFP-CDC42 and LifeAct-mCherry, (B) GFP-CDC42 and mCherry-CIP4, (C) LifeAct-GFP and mCherry-CIP4, and (D) LifeAct-GFP and PalMyr-mCherry (PalMyr). Thirty-minute time-lapses with 15-s intervals between frames. Region size, 0.85 μm. ( E ) Correlation coefficients between the pairs of proteins shown in (A) to (D). Number of deformations: PalMyr/LifeAct, n = 65; CIP4/CDC42, n = 118; CIP4/LifeAct, n = 83; LifeAct/CDC42, n = 145. Three independent experiments. ( F and G ) Monitoring of CDC42-dependent actin polymerization upon deformation of the plasma membrane by FluidFM. (F) Quantification of normalized LifeAct-mCherry fluorescence intensity around FluidFM tip over time upon coexpression of GFP (control, black), GFP-CDC42-T17N (red), GFP-CDC42-WT (blue), or GFP-CDC42-Q61L (green). Ten-minute time-lapses with 9-s intervals between frames. Number of cells: GFP, n = 20; GFP-CDC42-T17N, n = 18; GFP-CDC42-WT, n = 15; GFP-CDC42-Q61L, n = 17. Two independent experiments. (G) Representative image of FluidFM/confocal experiments upon coexpression of GFP-CDC42-Q61L and LifeAct-mCherry. Region marked by a dashed square surrounding the bead, expanded below at the indicated time points; t = 0 min, initial deformation of the cell membrane. TL, transmitted light (FluidFM cantilever) (representative images of GFP, GFP-CDC42-T17N, and GFP-CDC42-WT in fig. S11, F to H). Data are means ± SEM; **** P < 0.0001 (E, one-way ANOVA with Dunnett’s multiple comparison test). Scale bar, 10 μm (G).

Article Snippet: APPL1 , Mouse , pmCherry-C1 , CMV , N-ter mCherry , Addgene #27683 , .

Techniques: Clinical Proteomics, Membrane, Fluorescence, Control, Comparison

Plasmids containing BAR domain protein sequences used in this study.

Journal: Science Advances

Article Title: Plasma membrane nanodeformations promote actin polymerization through CIP4/CDC42 recruitment and regulate type II IFN signaling

doi: 10.1126/sciadv.ade1660

Figure Lengend Snippet: Plasmids containing BAR domain protein sequences used in this study.

Article Snippet: APPL1 , Mouse , pmCherry-C1 , CMV , N-ter mCherry , Addgene #27683 , .

Techniques:

Other plasmids used in this study.

Journal: Science Advances

Article Title: Plasma membrane nanodeformations promote actin polymerization through CIP4/CDC42 recruitment and regulate type II IFN signaling

doi: 10.1126/sciadv.ade1660

Figure Lengend Snippet: Other plasmids used in this study.

Article Snippet: APPL1 , Mouse , pmCherry-C1 , CMV , N-ter mCherry , Addgene #27683 , .

Techniques: