Senolytic and senomorphic agent procyanidin C1 alleviates structural and functional decline in the aged retina

作者：Yidan Liu, Xiuxing Liu, Xuhao Chen, Zhenlan Yang, Jianqi Chen, Weining Zhu, Yangyang Li, Yuwen Wen, Caibin Deng, Chenyang Gu, Jianjie Lv, Rong Ju, Yehong Zhuo, Wenru Su · 发表于：Proceedings of the National Academy of Sciences · 年份：2024 · DOI：10.1073/pnas.2311028121 · 被引用次数：42 · 研究领域：Neuroinflammation and Neurodegeneration Mechanisms、Retinal Development and Disorders、Single-cell and spatial transcriptomics

Increased cellular senescence burden contributes in part to age-related organ dysfunction and pathologies. In our study, using mouse models of natural aging, we observed structural and functional decline in the aged retina, which was accompanied by the accumulation of senescent cells and senescence-associated secretory phenotype factors. We further validated the senolytic and senomorphic properties of procyanidin C1 (PCC1) both in vitro and in vivo, the long-term treatment of which ameliorated age-related retinal impairment. Through high-throughput single-cell RNA sequencing (scRNA-seq), we comprehensively characterized the retinal landscape after PCC1 administration and deciphered the molecular basis underlying the senescence burden increment and elimination. By exploring the scRNA-seq database of age-related retinal disorders, we revealed the role of cellular senescence and the therapeutic potential of PCC1 in these pathologies. Overall, these results indicate the therapeutic effects of PCC1 on the aged retina and its potential use for treating age-related retinal disorders.