Journal: Developmental cell
Article Title: Pancreatic alpha and beta cell fate choice is directed by apical-basal polarity dynamics.
doi: 10.1016/j.devcel.2025.02.008
Figure Lengend Snippet: Figure 1. Disruption of apical-basal polarity by dominant-negative CDH1 mutants in the Matrigel overlay culture system or by Cdc42 knockout in the developing mouse pancreas alters beta cell specification (A) Design of dominant-negative CDH1 mutants with deletions in the extracellular domain (CDH1DE) or the p120ctn-binding site (CDH1DP). mCh, internal ribosome entry site (IRES)-coupled mCh (red fluorescent protein) reporter. (B) Confocal images of S5 (day 13) differentiated cells (± 72 h Dox treatment). EZR, EZRIN, green; BCAT, beta-catenin, gray; mCh, mCherry, red. Scale bar, 50 mm. (C) Flow cytometry quantification of INS single-positive beta cells and GCG positive alpha cells in mCherry+ and mCherry subpopulations after Dox treatment (S4–S6). CDH1DE and CDH1DP mutations led to the same degree of reduction in the INS+GCG/GCG+ ratio in mCherry+ mutant cells compared with mCherry
Article Snippet: REAGENT or RESOURCE SOURCE IDENTIFIER Latrunculin B Sigma Aldrich #L5288 Heparin Sigma Aldrich #H3149-100KU Bovine serum albumin (BSA) Proliant #7500804 Bovine serum albumin (BSA) Roche #10775835001 Bovine serum albumin (BSA) Sigma Aldrich #B4287 Y-27632 Merck Millipore #688000 45 % glucose solution in water Sigma Aldrich #G8769 7.5% sodium bicarbonate solution Thermo Fisher #25080094 Forskolin Sigma Aldrich #F6886 3-Isobutyl-1-methylxanthin Thermo Fisher #J64598.MC G418 Thermo Fisher #10131027 Hygromycin Thermo Fisher #10687010 Doxycycline Sigma-Aldrich #D3447 Critical commercial assays RNeasy Mini Kit Qiagen #74106 RNeasy Micro Kit Qiagen #74004 iScript cDNA Synthesis Kit BIO-RAD #1708891 KAPA HiFi HotStart Library Amplification Kit Roche #07958951001 cAMP XP@ Assay Kit Cell Signaling #4339 P3 Primary Cell Kit Lonza #V4XP-3024 LIVE/DEAD Fixable Violet Dead Cell Stain Kit Thermo Fisher #L34964 Deposited data scRNA-seq datasets This paper GSE224286 Experimental models: Cell lines SA121 Takara bio N/A H1 Beydag-Tasöz et al.34 (University of Copenhagen) N/A Experimental models: Organisms/strains Cdc42fl/fl R26-YFP+/+ mice In house N/A Pdx1-Cre+/- Cdc42fl/wt mice In house N/A Oligonucleotides siRNA against EGR1 Thermo Fisher #S4537; #S4538 Negative control siRNA Thermo Fisher #4390843 Recombinant DNA Mutant CDH1 sequences Addgene #45770; #45773 PiggyBac destination vector PB-TAC-ERN Addgene #80475 Cas9 expression vector (pX458-HF1) Addgene #48138 Software and algorithms Adobe Photoshop 2022 Adobe https://www.adobe.com Adobe Illustrator 2023 Adobe https://www.adobe.com Imaris 8.4, 9.0 Oxford Instruments https://imaris.oxinst.com/ Fiji 2.0/ImageJ NIH Image http://imagej.nih.gov/ij GraphPad Prism 10 GraphPad https://www.graphpad.com FlowJo 10 BD https://www.flowjo.com FCS Express 7 De Novo Software https://denovosoftware.com ZEN (blue edition) ZEISS https://www.micro-shop.zeiss.com Developmental Cell 60, 1–13.e1–e5, July 7, 2025 e2
Techniques: Disruption, Dominant Negative Mutation, Knock-Out, Binding Assay, Flow Cytometry, Mutagenesis