Journal: bioRxiv

Article Title: The lung extracellular matrix protein landscape in severe early-onset and moderate chronic obstructive pulmonary disease

doi: 10.1101/2023.10.20.562391

Figure Lengend Snippet: FFPE lung tissue sections from control and COPD donors were stained using immunohistochemistry for ECM and ECM-associated proteins with specific signals being detected with Nova red (red) and counterstained with hematoxylin (blue). Sections were scanned at 40x magnification using a digital slide scanner. Scale bar = 400um. Images are representative of protein detection patterns seen in control donors (n=18), SEO-COPD (n=12), and moderate COPD (n=14). ECM: extracellular matrix; SEO-COPD: Severe early-onset COPD patients; FFPE: formalin fixed paraffin embedded; COL1A1: collagen type I α chain 1; COL6A1: collagen type VI α chain 1; COL6A2: collagen type VI α chain 2; COL14A1: collagen type XIV α chain 1; FBLN2: fibulin 2; FBLN5: fibulin 5; LTBP4: latent transforming growth factor binding protein 4; LUM: lumican; DCN: decorin; VCAN: versican; ELN: elastin.

Article Snippet: Following PBS washes, primary antibodies diluted in 1% BSA/PBS for FBLN5 (1:8000, Mouse Anti-Fibulin 5/DANCE Antibody 1G6A4, Novus Biologicals), DCN (1:1500, Mouse Anti-Dermatan Sulfate Proteoglycan Antibody 6B6, Seikagaku), VCAN (1:200, Mouse Anti-Versican Antibody 2B1, Seikagaku), and ELN (1:400, Rabbit Anti-Elastin Antibody CL55011AP, Cedarlane Labs) were added to the respective sections for 1 hour at room temperature.

Techniques: Control, Staining, Immunohistochemistry, Formalin-fixed Paraffin-Embedded, Binding Assay

Journal: bioRxiv

Article Title: The lung extracellular matrix protein landscape in severe early-onset and moderate chronic obstructive pulmonary disease

doi: 10.1101/2023.10.20.562391

Figure Lengend Snippet: ECM proteins in FFPE tissue sections from controls (n=18), SEO-COPD (n=12), and moderate COPD (n=14) were detected using immunohistochemistry. Parenchyma was isolated and analyzed for percentage positive tissue area and mean intensity of positive pixels of expression for each protein. All 44 donors were available for analysis of COL1A1, COL6A2, FBLN2, LTBP4, LUM, DCN, VCAN, AND ELN, while for COL6A1, COL14A1, and FBLN5 43 donors were available. For each protein, regression coefficients (± 95% CI) were obtained following linear regression and a p value of <0.05 was considered significant. Non-transformed variables are plotted first, followed by log transformed variables. The differences in ECM and ECM-associated proteins in COPD tissue were compared to control in terms of A-C) percentage area and D-F) mean intensity of positively stained pixels. Dark blue-colored bars in light blue colored boxes highlight significant differences. ECM: extracellular matrix; SEO-COPD: Severe early-onset COPD patients; FFPE: formalin fixed paraffin embedded; COL1A1: collagen type I α chain 1; COL6A1: collagen type VI α chain 1; COL6A2: collagen type VI α chain 2; COL14A1: collagen type XIV α chain 1; FBLN2: fibulin 2; FBLN5: fibulin 5; LTBP4: latent transforming growth factor binding protein 4; LUM: lumican; DCN: decorin; VCAN: versican; ELN: elastin.

Article Snippet: Following PBS washes, primary antibodies diluted in 1% BSA/PBS for FBLN5 (1:8000, Mouse Anti-Fibulin 5/DANCE Antibody 1G6A4, Novus Biologicals), DCN (1:1500, Mouse Anti-Dermatan Sulfate Proteoglycan Antibody 6B6, Seikagaku), VCAN (1:200, Mouse Anti-Versican Antibody 2B1, Seikagaku), and ELN (1:400, Rabbit Anti-Elastin Antibody CL55011AP, Cedarlane Labs) were added to the respective sections for 1 hour at room temperature.

Techniques: Immunohistochemistry, Isolation, Expressing, Transformation Assay, Control, Staining, Formalin-fixed Paraffin-Embedded, Binding Assay

Journal: bioRxiv

Article Title: The lung extracellular matrix protein landscape in severe early-onset and moderate chronic obstructive pulmonary disease

doi: 10.1101/2023.10.20.562391

Figure Lengend Snippet: ECM proteins present in FFPE tissue sections from controls (n=18), SEO-COPD (n=12), and moderate COPD (n=14) were detected using immunohistochemistry. Airway walls were isolated and analyzed for percentage area and mean intensity of expression for each protein. The number of airway walls available for the analysis for each protein were COL1A1 (n= 155), COL6A1 (n=150), COL6A2 (n=149), COL14A1 (n=152), FBLN2 (n=158), FBLN5 (n=173), LTBP4 (n=163), LUM (n=158), DCN (n=156), VCAN (n=165), and ELN (n=158). For each protein, regression coefficients (± 95% CI) were obtained following linear regression and a p value of <0.05 was considered significant. Non-transformed variables are plotted first, followed by log transformed variables. The differences in ECM and ECM-associated proteins in COPD tissue were compared to control in terms of A-C) percentage area and D-F) mean intensity of positively stained pixels. Dark blue-colored bars in light blue colored boxes highlight significant differences. ECM: extracellular matrix; SEO-COPD: Severe early-onset COPD patients; FFPE: formalin fixed paraffin embedded; COL1A1: collagen type I α chain 1; COL6A1: collagen type VI α chain 1; COL6A2: collagen type VI α chain 2; COL14A1: collagen type XIV α chain 1; FBLN2: fibulin 2; FBLN5: fibulin 5; LTBP4: latent transforming growth factor binding protein 4; LUM: lumican; DCN: decorin; VCAN: versican; ELN: elastin.

Article Snippet: Following PBS washes, primary antibodies diluted in 1% BSA/PBS for FBLN5 (1:8000, Mouse Anti-Fibulin 5/DANCE Antibody 1G6A4, Novus Biologicals), DCN (1:1500, Mouse Anti-Dermatan Sulfate Proteoglycan Antibody 6B6, Seikagaku), VCAN (1:200, Mouse Anti-Versican Antibody 2B1, Seikagaku), and ELN (1:400, Rabbit Anti-Elastin Antibody CL55011AP, Cedarlane Labs) were added to the respective sections for 1 hour at room temperature.

Techniques: Immunohistochemistry, Isolation, Expressing, Transformation Assay, Control, Staining, Formalin-fixed Paraffin-Embedded, Binding Assay

Journal: bioRxiv

Article Title: The lung extracellular matrix protein landscape in severe early-onset and moderate chronic obstructive pulmonary disease

doi: 10.1101/2023.10.20.562391

Figure Lengend Snippet: ECM differences noted in the different analyzes throughout this study have been summarized here. In the staining and ECM signatures, red or blue arrows indicate higher or lower proportional levels or component scores in COPD respectively, while they denote positive or negative associations with FEV1 respectively. ECM: extracellular matrix; SEO-COPD: Severe early-onset COPD patients; COL1A1: type I collagen α chain 1; COL6A1: type VI collagen α chain 1; COL6A2: type VI collagen α chain 2; COL14A1: type XIV collagen α chain 1; FBLN2: fibulin 2; FBLN5: fibulin 5; LTBP4: latent transforming growth factor binding protein 4; LUM: lumican; DCN: decorin; VCAN: versican; ELN: elastin; FEV1: forced expiratory volume in 1 second.

Article Snippet: Following PBS washes, primary antibodies diluted in 1% BSA/PBS for FBLN5 (1:8000, Mouse Anti-Fibulin 5/DANCE Antibody 1G6A4, Novus Biologicals), DCN (1:1500, Mouse Anti-Dermatan Sulfate Proteoglycan Antibody 6B6, Seikagaku), VCAN (1:200, Mouse Anti-Versican Antibody 2B1, Seikagaku), and ELN (1:400, Rabbit Anti-Elastin Antibody CL55011AP, Cedarlane Labs) were added to the respective sections for 1 hour at room temperature.

Techniques: Staining, Binding Assay

Journal: Cancer Research

Article Title: Parkin Deficiency Suppresses Antigen Presentation to Promote Tumor Immune Evasion and Immunotherapy Resistance

doi: 10.1158/0008-5472.CAN-22-2499

Figure Lengend Snippet: Parkin deficiency in human ccRCC is associated with poor clinical outcome, limited antigen presentation capabilities, and impacts immunotherapy efficacy. Parkin ( PRKN ) downregulation in patients with KIRC is significantly associated with overall survival and tumor stage. A, PRKN gene expression is significantly downregulated in patient tumor samples vs. matched controls ( N = 72 matches samples, P value = 3E−07 via paired Student t test; FPKMs mapped reads data from GDC HTSeq-FPKM pipeline was used). Dashed lines represent cutoffs used to bin patients with KIRC into low, mid, high PRKN gene expression levels. B, PRKN gene expression levels are significantly associated with overall survival ( N = 538 tumor samples, P < 0.0001 via log-rank test for trend). C, PRKN expression is significantly associated with overall survival in patients with stage 4 tumors (log-rank P < 0.007). D, mRNA expression levels of PRKN on HEK293, 786-O, CAKI-I, and A498 cells cultured overnight in growth media. E, mRNA and protein expression levels of A498 Parkin KO or EV cells. F, A498 Parkin KO or EV cells were stimulated with IFNγ (10 ng/mL) for 18 hours. Then, immunoblotting analysis was performed on Parkin, HLA-A, TAP1, and PSMB8. Data represent two to three independent experiments. Immunoblot data represent two to three independent experiments. G, IFNγ ELISA analysis was performed on donor-derived NY-ESO-1-specific T cells (5 × 10 4 ) cocultured in a 1:1 ratio overnight with A498 Parkin KO or EV cells. Tumor cells were prestimulated with IFNγ (10 ng/mL) or mock-treated for 18 hours before the assay. Data are represented as mean ± SD. ***, P < 0.001; unpaired, two-tailed t test.

Article Snippet: The primary antibodies for TAP1, PSMB8, β2-microglobulin (D8P1H), HSP90 (C45G5), β-actin (E4D9Z), Vinculin (VCL; E1E9V), Parkin, PTEN, AMPKa, phospho-AMPKa (Thr172; 40H9), Akt, phospho-Akt (Ser473; D9E), phospho-GSK-3β (Ser9, D85E12), and GSK-3β (D5C5Z) were purchased from Cell Signaling Technology; HLA-A was purchased from Thermo Fisher Scientific; and MHC-I (ER-HR52) was obtained from Santa Cruz Biotechnology.

Techniques: Immunopeptidomics, Gene Expression, Expressing, Cell Culture, Western Blot, Enzyme-linked Immunosorbent Assay, Derivative Assay, Two Tailed Test

Journal: Cancer Research

Article Title: Parkin Deficiency Suppresses Antigen Presentation to Promote Tumor Immune Evasion and Immunotherapy Resistance

doi: 10.1158/0008-5472.CAN-22-2499

Figure Lengend Snippet: Parkin regulates the MHC-I-associated tumor APM and fosters tumor progression. A and B, mRNA expression levels of Prkn , H2-k1 , Tap1 , Psmb8 , and B2m in RENCA cells stably transfected with sh Prkn _1 (sh#1), sh Prkn _3 (sh#3), and empty vector control (pLKO.1) lentiviral vectors. Data are represented as mean ± SD. ***, P < 0.001; unpaired, two-tailed t test. C, Protein expression analyses of Parkin, Tap1, Psmb8, and B2m (immunoblotting) and Parkin vs. MHC-I (intracellular staining, flow cytometry) of pLKO.1 controls, sh#1, and sh#3 RENCA cells. Data represent two to three independent experiments. D, IFNγ ELISPOT analysis was performed on T cells isolated from the spleens of pLKO.1 RENCA tumor-bearing mice at day 25 after challenge. T cells were cocultured overnight with stimulator Parkin-positive (pLKO.1) or -negative (sh#1, sh#3) RENCA cells (5:1 ratio). E, Parkin-positive (pLKO.1) or -negative (sh#1, sh#3) RENCA cells (10 6 ) were injected in the back of BALB/c mice and tumor growth was monitored. Data are represented as mean ± SEM. *, P < 0.05; ***, P < 0.001; two-way ANOVA.

Article Snippet: The primary antibodies for TAP1, PSMB8, β2-microglobulin (D8P1H), HSP90 (C45G5), β-actin (E4D9Z), Vinculin (VCL; E1E9V), Parkin, PTEN, AMPKa, phospho-AMPKa (Thr172; 40H9), Akt, phospho-Akt (Ser473; D9E), phospho-GSK-3β (Ser9, D85E12), and GSK-3β (D5C5Z) were purchased from Cell Signaling Technology; HLA-A was purchased from Thermo Fisher Scientific; and MHC-I (ER-HR52) was obtained from Santa Cruz Biotechnology.

Techniques: Expressing, Stable Transfection, Transfection, Plasmid Preparation, Control, Two Tailed Test, Western Blot, Staining, Flow Cytometry, Enzyme-linked Immunospot, Isolation, Injection

Journal: Cancer Research

Article Title: Parkin Deficiency Suppresses Antigen Presentation to Promote Tumor Immune Evasion and Immunotherapy Resistance

doi: 10.1158/0008-5472.CAN-22-2499

Figure Lengend Snippet: Parkin regulates cytosolic tumor antigen processing and presentation and facilitates effector CD8 + T-cell cancer immunity. A–C, Mouse melanoma B16-OVA Prkn knockout (KO, CRISPr/Cas9) or EV control cells were stimulated for 18 hours with IFNγ (10 ng/mL) or mock-stimulated before the analyses. A, mRNA expression levels of Prkn , H2-k1 , Psmb8 , and Tap1 in B16-OVA Parkin KO or EV cells. Data are represented as mean ± SD. ** P < 0.01; *** P < 0.001; unpaired, two-tailed t test. B, Protein expression analyses of Parkin, Tap1, and Psmb8 (immunoblotting) and SIINFEKL-bound to H-2Kb (MHCi-OVA; intracellular staining, flow cytometry) of B16-OVA KO and EV cells. Data represent two to three independent experiments. C, IFNγ ELISPOT analysis was performed on OT.1 T cells (10 5 ) cocultured overnight with B16-OVA KO and EV cells in a 5:1 ratio. D, B16-OVA Parkin KO or EV cells (10 6 ) were injected in the back of C57BL/6 mice and tumor growth was monitored. Five mice per group were treated with anti-CD8 blocking antibody (aCD8) or isotype (ISO) control. E, Percentage of CD45 − /MHC-OVA + cells present in B16-OVA Parkin KO or EV isotype-treated tumors analyzed by flow cytometry. F, SIINFEKL-specific CD8 + T-cell tumor infiltration present in B16-OVA Parkin KO or EV isotype-treated tumors. G, mRNA expression levels of IFNγ in B16-OVA Parkin KO or EV isotype-treated tumors. E–G, Data are represented as mean ± SEM. ns, not significant; *, P < 0.05; **, P < 0.01; unpaired, two-tailed t test. H, B16-OVA Parkin KO or EV cells (10 6 ) were injected in the back of C57BL/6-Tg(TcraTcrb)1100Mjb/J (OT.1) mice (5 per group) and tumor growth was monitored. I, Survival rate analysis (Kaplan–Meier, log-rank test) was performed by day 25 posttumor challenge, including five mice per group. D and H, Data are represented as mean ± SEM. ***, P < 0.001; two-way ANOVA.

Article Snippet: The primary antibodies for TAP1, PSMB8, β2-microglobulin (D8P1H), HSP90 (C45G5), β-actin (E4D9Z), Vinculin (VCL; E1E9V), Parkin, PTEN, AMPKa, phospho-AMPKa (Thr172; 40H9), Akt, phospho-Akt (Ser473; D9E), phospho-GSK-3β (Ser9, D85E12), and GSK-3β (D5C5Z) were purchased from Cell Signaling Technology; HLA-A was purchased from Thermo Fisher Scientific; and MHC-I (ER-HR52) was obtained from Santa Cruz Biotechnology.

Techniques: Knock-Out, CRISPR, Control, Expressing, Two Tailed Test, Western Blot, Staining, Flow Cytometry, Enzyme-linked Immunospot, Injection, Blocking Assay