A chemical molecule promotes Trop2+ biliary duct organoids differentiation into insulin-secreting cells
Liu, M.; Yu, W.; Wang, Y.; Yan, B.; Shang, J.; Zhang, C.; Wu, H.; Tai, S.; Jin, L.; Teng, C.-B.
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Cell replacement therapy is a hopeful strategy for diabetes treatment, whereas lack of pancreas donors leads this strategy to a dilemma. Here, we demonstrate that Trop2 is a useful marker to enrich the progenitors with a long-term organoid formation capability from extrahepatic bile ducts in both mouse and human. Based on BMP7 initiation, the Trop2-positive mouse extrahepatic bile duct organoids (mBDOs) could be induced to produce 8.49 {+/-} 0.45% of insulin-secreting cells. We further screened out a chemical small molecule TLY142, which significantly increased the proportion of insulin-secreting cells to 19.9 {+/-} 0.62% and 25.50 {+/-} 4.82% in induced mouse and human extrahepatic bile duct organoids (hBDOs) in vitro, and transplantation of these differentiated organoids into STZ-induced diabetic nude mice remarkably improved their blood glucose and enhanced glucose sensitivity. This study provides a novel strategy that using small molecules promotes biliary duct organoids differentiation into {beta} cells to cure diabetes. Graphic abstract O_FIG O_LINKSMALLFIG WIDTH=198 HEIGHT=200 SRC="FIGDIR/small/483710v1_ufig1.gif" ALT="Figure 1"> View larger version (46K): org.highwire.dtl.DTLVardef@3c85b5org.highwire.dtl.DTLVardef@16e3874org.highwire.dtl.DTLVardef@13c509corg.highwire.dtl.DTLVardef@d0608f_HPS_FORMAT_FIGEXP M_FIG C_FIG
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