anti-mid1 rabbit polyclonal antibody  (Absolute Biotech Inc)

Journal: Current Biology

Article Title: Systems mapping of bidirectional endosomal transport through the crowded cell

doi: 10.1016/j.cub.2024.08.026

Figure Lengend Snippet: EB1, MID1, and CEP169 recruit Lis1 and dyneinHC, but not p150 glued , to the microtubule growing plus ends (A) EGFP-eLis1 (green) and SPYtubulin (red) localization in MelJuSo cells. Arrows show microtubule plus ends ( A). (B) Lis1-positive spots/μm 2 after indicated MAPs’ depletion compared with control (siC) ( Figure S7 D) ( N = 10–26 cells, n = 2 independent experiments). (C) EGFP-eLis1 (green) and LEs (LysoTracker, blue) localization in relation to eEB1-mScarlet, mScarlet-eCEP169, and mScarlet-eMID1 (red) ( B–S14D). (D) 30-s kymographs of EGFP-eLis1, eEB1-mScarlet, and LysoTracker of area in (C) (dotted line). (E) DyneinHC-positive spots/μm 2 after indicated MAPs’ depletion, compared with control (siC) ( Figure S7 H) ( N = 13–18 cells, n = 2 independent experiments). (F) p150 glued -positive spots/μm 2 after indicated MAPs’ depletion, compared with control (siC) ( Figure S7 J) ( N = 14–15 cells, n = 2 independent experiments). (G) HA-RILP (unstained) overexpression in mScarlet-eDyneinHC, EGFP-Lis1, or EGFP-ep150 glued cells (green), fixed and antibody-stained for CD63 (red). (H) Manders quantification of data in (G) ( N = 14–21 cells, n = 2 independent experiments). (I) EGFP-eLis1 (green) and mScarlet-eRab5a, mScarlet-eRab6a, or mScarlet-Rab7a (red) in time . (J) Distance quantification of data in (I). Measured is the shortest distance from detected vesicles to the Lis1-positive mask. Percentage of endosomes with distance <180 nm is plotted ( N = 20–31 cells, n = 3 independent experiments). Plots report mean; error bars reflect ± SD. t test or one-way ANOVA, ∗∗∗ p < 0.001, ∗∗ p < 0.005; ns, not significant. Scale bars as indicated. See also Figure S7 and and .

Article Snippet: Rabbit polyclonal anti-MID1 , Novus , Cat#NBP1-26612; RRID: AB_1853386.

Techniques: Control, Over Expression, Staining

Journal: Current Biology

Article Title: Systems mapping of bidirectional endosomal transport through the crowded cell

doi: 10.1016/j.cub.2024.08.026

Figure Lengend Snippet:

Article Snippet: Rabbit polyclonal anti-MID1 , Novus , Cat#NBP1-26612; RRID: AB_1853386.

Techniques: Recombinant, CRISPR, Sequencing, Introduce, Clone Assay, Software

Journal: Current Biology

Article Title: Systems mapping of bidirectional endosomal transport through the crowded cell

doi: 10.1016/j.cub.2024.08.026

Figure Lengend Snippet:

Article Snippet: Rabbit polyclonal anti-MID1 , Novus , Cat#NBP1-26612; RRID: AB_1853386.

Techniques:

Journal: Life Science Alliance

Article Title: Absence of the RING domain in MID1 results in patterning defects in the developing human brain

doi: 10.26508/lsa.202302288

Figure Lengend Snippet: (A) Schematic depicting the MID1 gene including exons. Numbers indicate base pairs. Dashed lines indicate reported mutations in the MID1 gene . Protein structure including major domains and amino acids. Below the MID1 protein structure, the frequency of deletions along the gene is summarized. The lowest panel indicates the rare exome variant ensemble learner (REVEL) score along the MID1 gene body. Note the peak of the REVEL score in the N-terminal end of MID1, correlating with the absence of reported pathogenic variants in patients. (B) Scheme highlighting the experimental procedure to derive fibroblasts from a male healthy donor and perform CRISPR/Cas9-mediated perturbations in coding exon 1 of MID1 in the hiPSCs derived from these fibroblasts. The resulting Rm1 and Rm2 mutations are caused by a 1-bp insertion and a 2-bp deletion, respectively. Besides the full-length MID1 protein that is produced when translation starts from ATG1, further alternative ATGs and their expected usage in the different MID1 hiPSC lines are schematized. (C) Quantitative RT–PCR of the expression levels of MID1 using specific primers to detect exons 1–2, 6–7, and 8–9 across Ctrl, Rm1, and Rm2 hiPSC lines (n = 4). (D) Western blot showing MID1 protein expression using an antibody against the C-terminus of MID1. Actin is used as a loading control. The arrow indicates full-length MID1, whereas # indicates truncated MID1 proteins of 69, 64, and 58/57 kD, and the star indicates an unspecific band. (E) Scheme depicting full-length and N-terminally truncated MID1 proteins resulting from the usage of alternative ATGs. The lowest scheme depicts the gene structure of a patient-derived MID1 variant exhibiting a 4-bp deletion at the C-terminal end. The color code on the left indicates lines in which this isoform is present (turquois: Ctrl, blue: Rm1, purple: Rm2, black: del4). (E, F) Micrographs showing cellular co-localization of MID1 isoforms fused to GFP with TUBB3 (orange) after overexpression of MID1-GFP constructs (summarized in (E)) in HeLa cells. The color of the box above (upper panel) or below (lower panel) the pictures indicates presence of this isoform in the respective hiPSC lines (turquois: Ctrl, blue: Rm1, purple: Rm2, black: del4). Note the formation of aggregates and loss of microtubule association upon overexpression of MID1 with a 4-bp deletion in the C-terminus as shown previously . Scale bar = 15 μm. (G) Images of representative Ctrl, Rm1, and Rm2 d30 brain organoid slices show the cellular organization through DAPI staining. The yellow dashed lines highlight representative ventricular zone-like structures (VZLS). (H) Quantification of the areas of VZLS covering the total area of brain organoid slices shown as box plots with jitters indicating individual d30 organoids. The data reveal a decrease in the contribution of VZLS to the brain organoids in the MID1 Rm organoids. Dots represent individual organoids derived from different batches, as indicated by distinct colors. Ctrl: n = 29 from seven batches, Rm1: n = 12 from four batches, Rm2: n = 12 from four batches, KO: n = 14 from three to six batches. Mann-Whitney- U test. ** P < 0.01, *** P < 0.001. Exact P -values (top to down) 0.0017, 6.5 × 10 −7 , 0.0027. Boxplots show median, quartiles (box), and range (whiskers). (I) Immunofluorescence stainings show the expression of MID1 (green) and PAX6 (magenta) in d30 brain organoid slices. MID1 signal can be detected in Ctrl and Rm1, but not in Rm2 or KO brain organoids. For (F, G), DAPI was used to counterstain nuclei. For (G, I), scale bar = 100 μm.

Article Snippet: Mouse monoclonal anti-β-ACTIN (A2066-200UL; 1:2,000; Sigma-Aldrich), rabbit polyclonal anti-MID1 C-terminal (NBP1-26612; 1:500; Novus).

Techniques: Variant Assay, CRISPR, Derivative Assay, Produced, Quantitative RT-PCR, Expressing, Western Blot, Control, Over Expression, Construct, Staining, MANN-WHITNEY, Immunofluorescence

Journal: Life Science Alliance

Article Title: Absence of the RING domain in MID1 results in patterning defects in the developing human brain

doi: 10.26508/lsa.202302288

Figure Lengend Snippet: (A) Electropherograms show sequencing results of genome-edited hiPSC lines. Highlighted are the 2-bp deletion in Rm1 (upper panel) and the 1-bp insertion within MID1 exon1 in the Rm2 hiPSC line (lower panel). (B) Scheme depicting the experimental approach to generate a MID1 full knockout by CRISPR/Cas9 in an isogenic male hiPSC line. (C) Bright field images of d3 embryoid bodies generated from Ctrl, Rm1, Rm2, and MID1 KO hiPSC lines. Scale bar = 200 μm. (D) Quantification of embryoid body size (d3) shown as fold change over Ctrl embryoid bodies. n = 52 from five batches (Ctrl), n = 32 from three batches (Rm1, Rm2), n = 20 from two batches (KO). Mann-Whitney- U tests were performed. Boxplots show median, quartiles (box), and range (whiskers). *** P < 0.001. Exact P -values (top to down) 5.4 × 10 −8 , 9.1 × 10 −12 , 3.8 × 10 −14 . (E) Images show immunofluorescence stainings against activated Caspase3 (actCASP3) to detect apoptotic cells in d30 organoids of all conditions. DAPI was used to counterstain nuclei. Scale bar = 500 μm. (F) Immunofluorescent staining of a 2-mo organoid derived from WT pluripotent stem cells showing expression of MID1 (green) and PAX6 (magenta). Scale bar = 500 μm.

Article Snippet: Mouse monoclonal anti-β-ACTIN (A2066-200UL; 1:2,000; Sigma-Aldrich), rabbit polyclonal anti-MID1 C-terminal (NBP1-26612; 1:500; Novus).

Techniques: Sequencing, Knock-Out, CRISPR, Generated, MANN-WHITNEY, Immunofluorescence, Staining, Derivative Assay, Expressing

Journal: Life Science Alliance

Article Title: Absence of the RING domain in MID1 results in patterning defects in the developing human brain

doi: 10.26508/lsa.202302288

Figure Lengend Snippet: (A) Immunofluorescence stainings of brain organoid slices showing SOX2 (green) and MAP2 (magenta) positive cells in d30 Ctrl, Rm1, Rm2, and KO organoids. DAPI was used to counterstain nuclei. Scale bar = 500 μm. (B) Quantification of the relative contribution of neural areas as quantified by the fraction of SOX2+ and MAP2+ per total area in d30 organoids reveals a decrease in the MID1 Rm organoids compared with Ctrl and KO organoids (Rm = Rm1 + Rm2), as shown by violin ad jitter plots. Mann-Whitney- U Test. Exact P -values (top to down) 0.01, 0.0017, 0.057. (C) Within the neural area, quantification of MAP2 in d30 organoids revealed reduced neural differentiation in the MID1 Rm organoids, as shown by violin and jitter plots. Mann-Whitney- U test. Exact P -values (top to down) 0.02, 0.11, 0.15. For (B, C), * P < 0.05, ** P < 0.01, ns, not significant. Dots represent individual organoids. Ctrl: n = 26 from six independent batches, Rm: n = 14 from six independent batches, KO: n = 16 from three independent batches. (D) Principal component analysis segregated the transcriptomes of the experimental hiPSC as highlighted by 95% confidence ellipses (dashed lines). (E) The PC plot depicts the transcriptional divergences of the Ctrl, Rm1, and Rm2 hiPSC lines from the hiPSC state throughout early differentiation into brain organoids (d5, d8, d11 of differentiation). Confidence ellipses (dashed lines) illustrate that Rm lines cluster together but differ from Ctrls. (F) Euler diagram showing the number of genes upregulated during differentiation from hiPSC to d5/d8/d11 in each condition and comparing the different conditions. (G) The Euler diagram showing the number of downregulated genes across experimental conditions during early neural differentiation. (F, H) Bar graph showing the top 20 GO terms significantly enriched in the genes upregulated specifically in the Ctrl organoids (i.e., 162 genes from (F)). (F, I) Top 20 GO terms enriched upon analysis of the Rm-specific upregulated genes, i.e., 97 genes from (F).

Article Snippet: Mouse monoclonal anti-β-ACTIN (A2066-200UL; 1:2,000; Sigma-Aldrich), rabbit polyclonal anti-MID1 C-terminal (NBP1-26612; 1:500; Novus).

Techniques: Immunofluorescence, MANN-WHITNEY

Journal: Life Science Alliance

Article Title: Absence of the RING domain in MID1 results in patterning defects in the developing human brain

doi: 10.26508/lsa.202302288

Figure Lengend Snippet: (A) Scheme highlighting the experimental outline of the bulk RNA-sequencing experiments. (B) Heatmap depicting the normalized counts per million (CPM) values of MID1 , MID2 , POU5F1 (OCT4), SOX2 , NANOG , and SALL4 across sampled human-induced pluripotent stem cell lines. (C) Heatmaps depicting the scaled normalized values of MID1 across conditions and time points. (D) Analysis of the genes down-regulated specifically in the Ctrl organoids (i.e., 78 genes from ). The top 20 significantly enriched GO terms are shown. (E) Top 20 significantly enriched GO terms emerging from the analysis of Rm specifically down-regulated genes, that is, 87 genes from . (F) Heatmap depicting the scaled normalized CPM values of HOXB4 and HOXB5 across conditions and time points indicating caudalization in Rm samples. (G) Heatmaps depicting the scaled normalized CPM values of DLX5 across conditions and time points showing incapacity to induce ventral genes.

Article Snippet: Mouse monoclonal anti-β-ACTIN (A2066-200UL; 1:2,000; Sigma-Aldrich), rabbit polyclonal anti-MID1 C-terminal (NBP1-26612; 1:500; Novus).

Techniques: RNA Sequencing Assay

Journal: Life Science Alliance

Article Title: Absence of the RING domain in MID1 results in patterning defects in the developing human brain

doi: 10.26508/lsa.202302288

Figure Lengend Snippet: (A) Box and jitter plots show the fold change of the expression of patterning genes BMP6 , LMX1A , OTX2 , TTR , and PTCH1 normalized to GAPDH in d30 Ctrl, Rm1, Rm2, and MID1 KO organoids. Mann-Whitney- U test, * P < 0.05, ** P < 0.01, *** P < 0.001. ns, not significant. Exact P -values (left to right) 0.0083, 0.014, 0.34, 0.037, 0.0096, 0.49, 0.084, 0.0014, 0.8, 0.0003, 0.00004, 0.29, 0.0053, 0.076, 0.017. ( BMP6 : Ctrl: n = 15, six batches; Rm1: n = 9, three batches; Rm2: n = 7, three batches; KO: n = 6, three batches. LMX1A , OTX2 , TTR : Ctrl: n = 16, six batches; Rm1: n = 9, three batches; Rm2: n = 9, three batches; KO: n = 6, three batches; PTCH1 : Ctrl: n = 16, six batches; Rm1: n = 9, three batches; Rm2: n = 7, three batches, KO: n = 6, three batches). (B) Brain organoids (d30) were used to quantify mRNA expression levels of TTR and ASCL1 across conditions. Note the increase in TTR expression at the expense of the ventral marker ASCL1 in the MID1 Rm mutant organoids. (Ctrl: n = 9, three batches; Rm1: n = 7, three batches; Rm2: n = 9, three batches). (C) Correlation matrix of the logarithmic fold change values of MID1 mutants versus Ctrl shows coregulated nodes and overall anti-correlation of dorsal choroid plexus marker TTR with the patterning genes PTCH1 and GLI1 . ( BMP6 : Ctrl: n = 15, six batches; Rm1: n = 9, three batches; Rm2: n = 7, three batches; LMX1A , OTX2 , TTR , DLX2 : Ctrl: n = 16, six batches; Rm1: n = 9, three batches; Rm2: n = 9, three batches; PTCH1 : Ctrl: n = 16, six batches; Rm1: n = 9, three batches; Rm2: n = 7, three batches; GLI1 : Ctrl: n = 16, six batches; Rm1; n = 9, three batches; Rm2; n = 8, three batches; FOXA2 : Ctrl: n = 9, three batches; Rm1; n = 9, three batches; Rm2; n = 9, three batches; ASCL1 : Ctrl: n = 9, three batches; Rm1; n = 8, three batches; Rm2; n = 9, three batches). (D) Line-plot showing the temporal pattern of GBX2 misexpression (ln of FC) along early differentiation in different conditions; solid line: mean; shade: 95% confidence interval. Note the constant increase in GBX2 in the Rm lines, contrasting the expression in the KO line (Ctrl: n = 6 from two batches, Rm1, Rm2, KO: n = 3 from one batch). (E) Box and jitter plots show the natural logarithm of the fold change values versus mean of Ctrl of ATOH1 expression normalized to GAPDH in d30 organoids across conditions. (Ctrl: n = 6 from two batches, Rm1, Rm2, KO: n = 3 from one batch). Mann-Whitney- U test, * P < 0.05, ns, not significant. Exact P -values (top to down) 1, 0.024, 0.024. (F) Images show sections of d30 organoids of all conditions (Ctrl, Rm1, Rm2, KO) stained for TTR. DAPI was used to counterstain nuclei and visualize cellular organization. Orange dashed line indicates zoom-in areas shown in the lower panel. Note that the tissue positive for TTR is organized as monolayered epithelium. (G) Quantification of TTR-positive areas covering the area of organoid indicated as fold change over Ctrl organoids across conditions. Different batches are indicated by distinct colors. Ctrl: n = 15 from six batches, Rm1, Rm2: n = 7 from four batches, KO: n = 9 from three batches. Mann-Whitney- U test. *** P < 0.001; ns, not significant. Exact P -values (top to down) 0.77, 0.00032, 0.00092. For (A, B, D, E, G), dots represent individual organoids. Boxplots show median, quartiles (box), and range (whiskers). (H) Micrographs show immunofluorescence stainings using an antibody against the cilia marker ARL13B in d30 organoids. Orange dashed box highlights insets magnified in the lower panel. Arrow heads point towards multiciliated cells. (I) SOX9 protein expression in Ctrl, Rm1, Rm2, and MID1 KO d30 organoids. Note the high expression in ventricular zone-like structures and the choroid plexus-like areas. For (F, H, I), DAPI was used to counterstain nuclei. (F, H, I) Scale bars = 500 μm (F, H upper, I), 100 μm ((F), lower), 25 μm ((H), lower).

Article Snippet: Mouse monoclonal anti-β-ACTIN (A2066-200UL; 1:2,000; Sigma-Aldrich), rabbit polyclonal anti-MID1 C-terminal (NBP1-26612; 1:500; Novus).

Techniques: Expressing, MANN-WHITNEY, Marker, Mutagenesis, Staining, Immunofluorescence

Journal: Life Science Alliance

Article Title: Absence of the RING domain in MID1 results in patterning defects in the developing human brain

doi: 10.26508/lsa.202302288

Figure Lengend Snippet: gRNAs used in this study.

Article Snippet: Mouse monoclonal anti-β-ACTIN (A2066-200UL; 1:2,000; Sigma-Aldrich), rabbit polyclonal anti-MID1 C-terminal (NBP1-26612; 1:500; Novus).

Techniques: Sequencing

Journal: Life Science Alliance

Article Title: Absence of the RING domain in MID1 results in patterning defects in the developing human brain

doi: 10.26508/lsa.202302288

Figure Lengend Snippet: Primers used in this study.

Article Snippet: Mouse monoclonal anti-β-ACTIN (A2066-200UL; 1:2,000; Sigma-Aldrich), rabbit polyclonal anti-MID1 C-terminal (NBP1-26612; 1:500; Novus).

Techniques: Sequencing