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- W4213414192 abstract "The deletion of the Hhex (Hematopoietically expressed homeobox) gene causes agenesis of the liver and polycystic liver disease depending on its timing. The present study was undertaken to determine the role of the Hhex gene in not only signaling cascades to cyst and abnormal bile duct formation but also the liver progenitor contribution to cystic development. Liver-specific Hhex knockout mice (Alb-Cre/HhexloxP/loxP) in adult stages were used. Wild-type and conditional knockout (cKO) livers were immunohistologically compared for cell growth, and gene expression of liver functions, biliary markers and cystic markers. In Hhex cKO livers, cyst formation and dilated intrahepatic bile ducts were noted, which resembled the histology of the von Meyenburg complex. Ki67 immunohistochemistry showed that the growth activity in bile ducts and cysts of cKO livers was elevated compared with that of wild-type livers. There were far fewer liver progenitor cells or bile ductule cells around portal veins of cKO livers than in wild-type livers. Several liver-enriched transcription factors, including Foxa1 and Foxa2, were heterogeneously expressed in bile ducts and cysts of cKO livers whereas their expression in wild-type bile ducts was comparatively homogeneous. PC1 and PC2 immunohistochemistry revealed their up-regulation in cysts of cKO livers. These data indicate that Hhex is not only required for proper bile duct morphogenesis, but is also involved in cyst formation through promoted cell growth. Liver progenitor cells may form cysts. Unbalanced expression of liver-enriched transcription factors might be involved in cyst formation. Hhex cKO mice may be a good animal model for hepatic cystic diseases." @default.
- W4213414192 created "2022-02-25" @default.
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- W4213414192 date "2022-04-01" @default.
- W4213414192 modified "2023-10-02" @default.
- W4213414192 title "Liver progenitor cells may construct cysts having heterogeneous gene expression of liver-enriched transcription factors in mice with conditional knockout of the Hhex gene" @default.
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- W4213414192 doi "https://doi.org/10.1016/j.bbrc.2022.02.076" @default.
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