Fig. 8

MAC-sorted GP2⁺ cells give rise to ‘β-like’ cells in vitro. a Flow plots showing the GP2 profile at day 13 of differentiation of H9 cells. Cells were analyzed either before MACS sorting (presort), after GP2 enrichment from a positive selection column (GP2⁺) or in the flow through from a depletion column. Top right plot shows NKX6-1 and PDX1 expression by flow cytometry in day 13 unsorted (presort) H9 cells. b Following MACS sorting for GP2 at day 13, cells were cultured generate β-like cells up to day 23. Representative flow cytometry plots of NKX6-1 and C-PEPTIDE (CPEP) expression at day 23 of differentiation from either unsorted (PRESORT), enriched for GP2 using a MACS positive selection column (GP2⁺) or in the flow through cell population (Flow-). The bar graph shows the average percentage of NKX6-1⁺/C-PEPTIDE⁺ cells at Day 23. N = 4, error bars indicate s.e.m. **p < 0.01, One-way ANOVA. c Model depicting the in vivo and in vitro equivalent of the human multipotent pancreatic progenitor (MPC) expressing PTF1A/GP2/NKX6-1. The MPC residing at the tip of the developing human pancreas has the potential to develop into acinar (PTF1A⁺/GP2⁺) and ductal/endocrine (NKX6-1⁺/GP2⁻) progenitors. Abbreviations: GP2, pancreatic secretory granule membrane major glycoprotein 2; D13, day 13; NKX6-1, NK6 homeobox 1; PDX1, pancreatic and duodenal homeobox 1; PTF1A, pancreas specific transcription factor 1a