State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, China.
Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA.
Curr Opin Nephrol Hypertens. 2022 May 1;31(3):235-243. doi: 10.1097/MNH.0000000000000782. Epub 2022 Feb 9.
PURPOSE OF REVIEW: Chronic kidney disease (CKD) is often viewed as an accelerated and premature ageing of the kidney, as they share common pathological features characterized by cellular senescence. In this review, we summarize the experimental evidence linking cellular senescence to the pathobiology of kidney ageing and CKD, and discuss the strategies for targeting senescent cells in developing therapeutics for ageing-related kidney disorders. RECENT FINDINGS: Kidney ageing and CKD are featured with increased cellular senescence, an irreversible state of cell cycle arrest and the cessation of cell division. Senescent cells secrete a diverse array of proinflammatory and profibrotic factors known as senescence-associated secretory phenotype (SASP). Secondary senescence can be induced by primary senescent cells via a mechanism involving direct contact or the SASP. Various senolytic therapies aiming to selectively remove senescent cells in vivo have been developed. Senostatic approaches to suppress senescence or inhibit SASP, as well as nutrient signalling regulators are also validated in animal models of ageing. SUMMARY: These recent studies provide experimental evidence supporting the notion that accumulation of senescent cells and their associated SASP is a main driver leading to structural and functional organ degeneration in CKD and other ageing-related disorder.
目的综述:慢性肾脏病(CKD)常被视为肾脏的加速和过早衰老,因为它们具有共同的病理特征,表现为细胞衰老。在这篇综述中,我们总结了将细胞衰老与肾脏衰老和 CKD 的病理生物学联系起来的实验证据,并讨论了针对衰老相关肾脏疾病开发治疗方法中靶向衰老细胞的策略。
最近的发现:肾脏衰老和 CKD 的特点是细胞衰老增加,这是一种细胞周期停滞和细胞分裂停止的不可逆状态。衰老细胞分泌多种促炎和促纤维化因子,称为衰老相关分泌表型(SASP)。原代衰老细胞可通过直接接触或 SASP 诱导继发性衰老。已经开发了各种旨在体内选择性清除衰老细胞的衰老细胞消除疗法。抑制衰老或抑制 SASP 的衰老稳定方法,以及营养信号调节剂,也在衰老动物模型中得到验证。
总结:这些最近的研究提供了实验证据,支持这样一种观点,即衰老细胞的积累及其相关的 SASP 是导致 CKD 和其他与衰老相关的疾病中结构和功能器官退化的主要驱动因素。
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