Transcriptome analysis of pancreatic progenitors differentiated from H9 human embryonic stem cells and induced pluripotent stem cells derived from a Mitchell-Riley Syndrome patient

Skin biopsies were obtained from a patient with Mitchell-Riley syndrome caused by a homozygous frame-shift mutation (c.1129C>T) in the RFX6 gene that leads to a premature stop codon (p.Arg377X). The patient suffered severe pancreatic agenesis, in common with other Mitchell-Riley syndrome patients. Fibroblasts from the biopsy were reprogrammed to generate a human induced pluripotent stem cell (hiPSC) line (MRS2-6). To assess the effects of the mutant RFX6 allele on pancreas formation and identify direct targets of the transcription factor RFX6, MRS2-6 and H9 control human embryonic stem cells (hESC) were differentiated into pancreatic progenitors. Samples were harvested for RNA isolation and whole transcriptome analysis at days 4 (definitive endoderm), 7 and 8 (gut tube), and 12 (pancreatic progenitors).