RIPK1-RIPK3-MLKL-dependent necrosis promotes the aging of mouse male reproductive system

eLife

Lingjun Meng¹  Yaning Su¹  Xiao Liu¹  Tao Xu¹  Zhiyuan Zhang¹  Xiaodong Wang¹  Dianrong Li¹ 

[1] National Institute of Biological Sciences, Beijing, China;

关键词: aging;    necroptosis;    apoptosis;    testis;    spermatogonia;   

DOI  :  10.7554/eLife.27692

来源: DOAJ

【 摘 要 】

A pair of kinases, RIPK1 and RIPK3, as well as the RIPK3 substrate MLKL cause a form of programmed necrotic cell death in mammals termed necroptosis. We report here that male reproductive organs of both Ripk3- and Mlkl-knockout mice retain ‘youthful’ morphology and function into advanced age, while those of age-matched wild-type mice deteriorate. The RIPK3 phosphorylation of MLKL, the activation marker of necroptosis, is detected in spermatogonial stem cells in the testes of old but not in young wild-type mice. When the testes of young wild-type mice are given a local necroptotic stimulus, their reproductive organs showed accelerated aging. Feeding of wild-type mice with an RIPK1 inhibitor prior to the normal onset of age-related changes in their reproductive organs blocked the appearance of signs of aging. Thus, necroptosis in testes promotes the aging-associated deterioration of the male reproductive system in mice.

【 授权许可】

Unknown