期刊
DEVELOPMENT
卷 141, 期 3, 页码 685-696出版社
COMPANY BIOLOGISTS LTD
DOI: 10.1242/dev.100297
关键词
Beta cell delamination; Differentiation; Cdc42
资金
- Swedish Research Council
- Lund University Stem Cell Center
- Swedish Foundation for Strategic Research
- National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
- Beta Cell Biology Consortium [DK089570]
- Juvenile Diabetes Research Foundation [17-2011-627]
- Novo Nordisk Foundation
- Danish Strategic Research Council
Delamination plays a pivotal role during normal development and cancer. Previous work has demonstrated that delamination and epithelial cell movement within the plane of an epithelium are associated with a change in cellular phenotype. However, how this positional change is linked to differentiation remains unknown. Using the developing mouse pancreas as a model system, we show that beta cell delamination and differentiation are two independent events, which are controlled by Cdc42/N-WASP signaling. Specifically, we show that expression of constitutively active Cdc42 in beta cells inhibits beta cell delamination and differentiation. These processes are normally associated with junctional actin and cell-cell junction disassembly and the expression of fate-determining transcription factors, such as Isl1 and MafA. Mechanistically, we demonstrate that genetic ablation of N-WASP in beta cells expressing constitutively active Cdc42 partially restores both delamination and beta cell differentiation. These findings elucidate how junctional actin dynamics via Cdc42/N-WASP signaling cell-autonomously control not only epithelial delamination but also cell differentiation during mammalian organogenesis.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据