Wang Wen-Juan, Cai Guang-Yan, Chen Xiang-Mei
Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing 100853, China.
Department of Nephrology, Beijing Changping Hospital, Beijing 102200, China.
Oncotarget. 2017 Apr 21;8(38):64520-64533. doi: 10.18632/oncotarget.17327. eCollection 2017 Sep 8.
Chronic kidney disease (CKD) is increasingly being accepted as a type of renal ageing. The kidney undergoes age-related alterations in both structure and function. To date, a comprehensive analysis of cellular senescence and senescence-associated secretory phenotype (SASP) in CKD is lacking. Hence, this review mainly discusses the relationship between the two phenomena to show the striking similarities between SASP and CKD-associated secretory phenotype (CASP). It has been reported that replicative senescence, stress-induced premature ageing, and epigenetic abnormalities participate in the occurrence and development of CKD. Genomic damage and external environmental stimuli cause increased levels of oxidative stress and a chronic inflammatory state as a result of irreversible cell cycle arrest and low doses of SASP. Similar to SASP, CASP factors activate tissue repair by multiple mechanisms. Once tissue repair fails, the accumulated SASP or CASP species aggravate DNA damage response (DDR) and cause the senescent cells to secrete more SASP factors, accelerating the process of cellular ageing and eventually leading to various ageing-related changes. It is concluded that cellular senescence and SASP participate in the pathological process of CKD, and correspondingly CKD accelerated the progression of cell senescence and the secretion of SASP. These results will facilitate the integration of these mechanisms into the care and management of CKD and other age-related diseases.
慢性肾脏病(CKD)日益被视为一种肾脏衰老类型。肾脏在结构和功能上都会发生与年龄相关的改变。迄今为止,尚缺乏对CKD中细胞衰老和衰老相关分泌表型(SASP)的全面分析。因此,本综述主要讨论这两种现象之间的关系,以展示SASP与CKD相关分泌表型(CASP)之间的显著相似性。据报道,复制性衰老、应激诱导的早衰和表观遗传异常参与了CKD的发生和发展。基因组损伤和外部环境刺激由于不可逆的细胞周期停滞和低剂量的SASP导致氧化应激水平升高和慢性炎症状态。与SASP相似,CASP因子通过多种机制激活组织修复。一旦组织修复失败,积累的SASP或CASP物质会加重DNA损伤反应(DDR),并导致衰老细胞分泌更多的SASP因子,加速细胞衰老过程,最终导致各种与衰老相关的变化。结论是,细胞衰老和SASP参与了CKD的病理过程,相应地,CKD加速了细胞衰老的进程和SASP的分泌。这些结果将有助于将这些机制整合到CKD和其他与年龄相关疾病的护理和管理中。
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