TRAF6 Mediates Basal Activation of NF-κB Necessary for Hematopoietic Stem Cell Homeostasis.
TRAF6 Mediates Basal Activation of NF-κB Necessary for Hematopoietic Stem Cell Homeostasis.
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DOI:
10.1016/j.celrep.2018.01.013
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发表时间:
2018-01-30
期刊:
影响因子:
8.8
通讯作者:
Starczynowski DT
中科院分区:
文献类型:
--
作者:
Fang J;Muto T;Kleppe M;Bolanos LC;Hueneman KM;Walker CS;Sampson L;Wellendorf AM;Chetal K;Choi K;Salomonis N;Choi Y;Zheng Y;Cancelas JA;Levine RL;Starczynowski DT
Basal nuclear factor κB (NF-κB) activation is required for hematopoietic stem cell (HSC) homeostasis in the absence of inflammation; however, the upstream mediators of basal NF-κB signaling are less well understood. Here, we describe TRAF6 as an essential regulator of HSC homeostasis through basal activation of NF-κB. Hematopoietic-specific deletion of Traf6 resulted in impaired HSC self-renewal and fitness. Gene expression, RNA splicing, and molecular analyses of Traf6-deficient hematopoietic stem/progenitor cells (HSPCs) revealed changes in adaptive immune signaling, innate immune signaling, and NF-κB signaling, indicating that signaling via TRAF6 in the absence of cytokine stimulation and/or infection is required for HSC function. In addition, we established that loss of IκB kinase beta (IKKβ)- mediated NF-κB activation is responsible for the major hematopoietic defects observed in Traf6-deficient HSPC as deletion of IKKβ similarly resulted in impaired HSC self-renewal and fitness. Taken together, TRAF6 is required for HSC homeostasis by maintaining a minimal threshold level of IKKβ/NF-κB signaling. Fang et al. identify TRAF6 as an essential regulator of hematopoietic stem cell (HSC) self-renewal and quiescence. TRAF6 preserves HSC homeostasis by maintaining a minimal threshold level of NF-κB signaling in the absence of inflammation.
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影响因子:
16
作者:
Linares, Juan F.;Duran, Angeles;Yajima, Tomoko;Pasparakis, Manolis;Moscat, Jorge;Diaz-Meco, Maria T.
通讯作者:
Diaz-Meco, Maria T.
DOI:
10.4049/jimmunol.1501231
发表时间:
2015-09-15
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Liu A;Wang Y;Ding Y;Baez I;Payne KJ;Borghesi L
通讯作者:
Borghesi L
影响因子:
82.9
作者:
通讯作者:
--
影响因子:
30.8
作者:
Bystrykh, L;Weersing, E;de Haan, G
通讯作者:
de Haan, G
影响因子:
82.9
作者:
King, Carolyn G.;Kobayashi, Takashi;Choi, Yongwon
通讯作者:
Choi, Yongwon