Figure 3: Ablation of HNF1A drives pancreatic endocrine differentiation toward cells with a more alpha cell gene expression signature.
Mel1 HNF1A WT, HET and KO ESCs were differentiated into pancreatic endocrine cells and analyzed as described below.
(A) Flow cytometry of C-Peptide versus GLUCAGON at the end stage differentiation cultures (n=6 per sample).
(B–D) Quantification of pancreatic hormone expressing cells from A (n=6 per sample).
(B) C-Peptide+ (C-PEP+) monohormonal cells. (C) GLUCAGON+ (GCG+) monohormonal cells. (D) C-Peptide+ GLUCAGON+ (C-PEP+GCG+) cell population.
(E–F) mRNA time-course analysis during pancreatic differentiation at DE, PP1, PP2 and beta-like cell stages (n=3 per sample). (E) PAX4 mRNA expression. (F) ARX mRNA expression.
(G) Relative gene expression of alpha cell specific genes at end stage of differentiation in HNF1A allelic series (n=3 per sample).
For all statistical analyses: * P<0.05. See also Figure S3.