衰老
医学
旁分泌信号
自分泌信号
癌症
癌症研究
凝集素
细胞生物学
病理
生物信息学
生物
内科学
细胞凋亡
受体
生物化学
作者
Weijun Huang,LaTonya J. Hickson,Alfonso Eirin,James L. Kirkland,Lilach O. Lerman
标识
DOI:10.1038/s41581-022-00601-z
摘要
Cellular senescence is a ubiquitous process with roles in tissue remodelling, including wound repair and embryogenesis. However, prolonged senescence can be maladaptive, leading to cancer development and age-related diseases. Cellular senescence involves cell-cycle arrest and the release of inflammatory cytokines with autocrine, paracrine and endocrine activities. Senescent cells also exhibit morphological alterations, including flattened cell bodies, vacuolization and granularity in the cytoplasm and abnormal organelles. Several biomarkers of cellular senescence have been identified, including SA-βgal, p16 and p21; however, few markers have high sensitivity and specificity. In addition to driving ageing, senescence of immune and parenchymal cells contributes to the development of a variety of diseases and metabolic disorders. In the kidney, senescence might have beneficial roles during development and recovery from injury, but can also contribute to the progression of acute kidney injury and chronic kidney disease. Therapies that target senescence, including senolytic and senomorphic drugs, stem cell therapies and other interventions, have been shown to extend lifespan and reduce tissue injury in various animal models. Early clinical trials confirm that senotherapeutic approaches could be beneficial in human disease. However, larger clinical trials are needed to translate these approaches to patient care. Cellular senescence has beneficial functions in embryonic development, wound healing and tumour suppression but can also be maladaptive, contributing to cancer development and disease. This Review describes the mechanisms, hallmarks and consequences of senescence, as well as the therapeutic potential of senescence-targeting interventions.
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