Figure 4. Sox9-Haploinsufficiency Does Not Result in Impaired Terminal Differentiation of Endocrine Cells.
Immunofluorescence staining for markers of differentiated endocrine cells, including GLUT2, PC1/3, IAPP, MAFA, PDX1, NKX6.1, ISL1 and HB9 reveals all markers to be equally expressed in insulin+ cells of Sox9 heterozygous mutant (Sox9+/Δpan) (E–H; M–P) and wild-type (WT) (A–D; I–L) pancreas at e18.5. qRT-PCRs performed on pooled mRNA from 200 isolated islets per genotype, confirm that islet Glut2 and MafA mRNA levels are similar in two 2-month-old Sox9+/Δpan and WT mice. The values shown represent mean values ± SEM (standard error of the mean) (n=3) (Q). Scale bar = 50µm.