Samenvatting
Lgr5 + intestinal stem cells generate enterocytes and secretory cells. Secretory lineage commitment requires Notch silencing. The Notch ligand Dll1 is expressed by a subset of immediate stem cell daughters. Lineage tracing in Dll1 GFP-ires-CreERT2 knock-in mice reveals that single Dll1 high cells generate small, short-lived clones containing all four secretory cell types. Lineage specification thus occurs in immediate stem cell daughters through Notch lateral inhibition. Cultured Dll1 high cells form long-lived organoids (mini-guts) on brief Wnt3A exposure. When Dll1 high cells are genetically marked before tissue damage, stem cell tracing events occur. Thus, secretory progenitors exhibit plasticity by regaining stemness on damage.
Originele taal-2 | Engels |
---|---|
Pagina's (van-tot) | 1099-1104 |
Aantal pagina's | 6 |
Tijdschrift | Nature Cell Biology |
Volume | 14 |
Nummer van het tijdschrift | 10 |
DOI's | |
Status | Gepubliceerd - okt. 2012 |
Extern gepubliceerd | Ja |