Tcf3 and Tcf4 are essential for long-term homeostasis of skin epithelia.
Tcf3 and Tcf4 are essential for long-term homeostasis of skin epithelia.
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DOI:
10.1038/ng.431
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发表时间:
2009-10
期刊:
影响因子:
30.8
通讯作者:
Fuchs, Elaine
中科院分区:
文献类型:
--
作者:
Nguyen, Hoang;Merrill, Bradley J.;Polak, Lisa;Nikolova, Maria;Rendl, Michael;Shaver, Timothy M.;Pasolli, H. Amalia;Fuchs, Elaine
Single-layered embryonic skin either stratifies to form epidermis or responds to Wnt signaling (stabilized β-catenin) to form hair follicles. Postnatally, stem cells continue to differentially use Wnt signaling in long-term tissue homeostasis. We have discovered that embryonic progenitor cells and postnatal hair follicle stem cells coexpress Tcf3 and Tcf4, which can act as transcriptional activators or repressors. Using loss-of-function studies and transcriptional analyses, we uncovered consequences to the absence of Tcf3 and Tcf4 in skin that only partially overlap with those caused by β-catenin deficiency. We established roles for Tcf3 and Tcf4 in long-term maintenance and wound repair of both epidermis and hair follicles, suggesting that Tcf proteins have both Wnt-dependent and Wnt-independent roles in lineage determination.
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