Document Type
Article
Publication Date
6-14-2022
Publication Title
Stem Cell Reports
Volume
17
Issue
6
Pages
1428-1441
Publisher Name
Cell Press
Abstract
Receptor-interacting protein kinase 3 (Ripk3) is one of the critical mediators of inflammatory cytokine-stimulated signaling. Here we show that Ripk3 signaling selectively regulates both the number and the function of hematopoietic stem cells (HSCs) during stress conditions. Ripk3 signaling is not required for normal homeostatic hematopoiesis. However, in response to serial transplantation, inactivation of Ripk3 signaling prevents stress-induced HSC exhaustion and functional HSC attenuation, while in response to fractionated low doses of ionizing radiation (IR), inactivation of Ripk3 signaling accelerates leukemia/lymphoma development. In both situations, Ripk3 signaling is primarily stimulated by tumor necrosis factor-α. Activated Ripk3 signaling promotes the elimination of HSCs during serial transplantation and pre-leukemia stem cells (pre-LSCs) during fractionated IR by inducing Mlkl-dependent necroptosis. Activated Ripk3 signaling also attenuates HSC functioning and represses a pre-LSC-to-LSC transformation by promoting Mlkl-independent senescence. Furthermore, we demonstrate that Ripk3 signaling induces senescence in HSCs and pre-LSCs by attenuating ISR-mediated mitochondrial quality control.
Identifier
85132131665 (Scopus)
Recommended Citation
Zhang, Lei; Luo, Huacheng; Ni, Hong Min; Liu, Shanhui; Xing, Hongyun; Zhang, Jun; Sellin, Mark; Breslin, Peter S.J.; Wei, Wei; Denning, Mitchell F.; Small, William; Ding, Wen Xing; Huang, Suming; and Zhang, Jiwang. Ripk3 signaling regulates HSCs during stress and represses radiation-induced leukemia in mice. Stem Cell Reports, 17, 6: 1428-1441, 2022. Retrieved from Loyola eCommons, Biology: Faculty Publications and Other Works, http://dx.doi.org/10.1016/j.stemcr.2022.04.009
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
