Effects of the Sox17?50 mutation on SOX17 function in mouse embryonic biliary development

To determine the role of specific cis-regulatory elements within the Sox17 endoderm-preferential TSS2 promoter, we generated Sox17?50 mutant animals and surveyed how this mutation altered Sox17 expression. EPCAM+/CXCR4+ endodermal cells were isolated from E10.5 Sox17?50/?50 and Sox17+/+ embryos (n = 1 of each genotype). Posterior foregut and midgut regions of embryos were dissected by removal of embryonic head, heart, tail, limb buds, posterior and dorsal body trunk. Sox17+/+ and Sox17?50/?50 cell samples were labelled with barcodes from 3'CellPlex Kit (10X Genomics) and subsequently pooled together for single isolation, library preparation and sequencing.