Noncanonical Wnt signaling maintains hematopoietic stem cells in the niche.
Noncanonical Wnt signaling maintains hematopoietic stem cells in the niche.
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DOI:
10.1016/j.cell.2012.05.041
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发表时间:
2012-07-20
期刊:
影响因子:
64.5
通讯作者:
Li L
中科院分区:
文献类型:
--
作者:
Sugimura R;He XC;Venkatraman A;Arai F;Box A;Semerad C;Haug JS;Peng L;Zhong XB;Suda T;Li L
Wnt signaling is involved in self-renewal and maintenance of hematopoietic stem cells (HSCs); however, the particular role of noncanonical Wnt signaling in regulating HSCs in vivo is largely unknown. Here, we show Flamingo (Fmi) and Frizzled (Fz) 8, members of noncanonical Wnt signaling, both express in and functionally maintain quiescent long-term HSCs. Fmi regulates Fz8 distribution at the interface between HSCs and N-cadherin+ osteoblasts (N-cad+OBs that enrich osteoprogenitors) in the niche. We further found that N-cad+OBs predominantly express noncanonical Wnt ligands and inhibitors of canonical Wnt signaling under homeostasis. Under stress, noncanonical Wnt signaling is attenuated and canonical Wnt signaling is enhanced in activation of HSCs. Mechanistically, noncanonical Wnt signaling mediated by Fz8 suppresses the Ca2+-NFAT- IFNγ pathway, directly or indirectly through the CDC42-CK1α complex and also antagonizes canonical Wnt signaling in HSCs. Taken together, our findings demonstrate that noncanonical Wnt signaling maintains quiescent long-term HSCs through Fmi and Fz8 interaction in the niche.
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影响因子:
23.9
作者:
Butler JM;Nolan DJ;Vertes EL;Varnum-Finney B;Kobayashi H;Hooper AT;Seandel M;Shido K;White IA;Kobayashi M;Witte L;May C;Shawber C;Kimura Y;Kitajewski J;Rosenwaks Z;Bernstein ID;Rafii S
通讯作者:
Rafii S
影响因子:
50.3
作者:
Gregory MA;Phang TL;Neviani P;Alvarez-Calderon F;Eide CA;O'Hare T;Zaberezhnyy V;Williams RT;Druker BJ;Perrotti D;Degregori J
通讯作者:
Degregori J
影响因子:
64.5
作者:
Kiel, MJ;Yilmaz, ÖH;Morrison, SJ
通讯作者:
Morrison, SJ
影响因子:
23.9
作者:
Haug, Jeffrey S.;He, Xi C.;Li, Linheng
通讯作者:
Li, Linheng
影响因子:
5.3
作者:
Dejmek, Janna;Safholm, Annette;Leandersson, Karin
通讯作者:
Leandersson, Karin