Immunity · 2026
Human immune aging clock identifies RUNX1 as a decelerator of T cell senescence.
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Ping Jiale, Qiao Qin, Gao Dan-Dan, Li Yun, Fan Yanling, Tian Yutong, Xiong Muzhao, Zheng Quan, Jiang Beier, Li Jiaming, Huang Zheng, Tu Qinxin, Zheng Zikai, Lu Xiaoyong, Hu Yiwen, Xu Yangqing, Sun Xiaoyan, Wang Qiaoran, Xu Liu-Jun, Chen Si-Jia, Wu Qi, Liu Lixiao, Zuo Yuesheng, Song Shuhui, Wang Si, Ma Shuai, Ye Jin-Lin, Chen Cheng-Shui, Qu Jing, Yang Yun-Gui, Jiang Lan, Zhang Feng, Liu Guang-Hui, Zhang Weiqi
Аннотация
Immunosenescence drives organismal aging, yet quantifying its heterogeneity to uncover therapeutic targets remains challenging. We construct a human immune aging clock from single-cell multi-omics data of nearly 1.2 million human peripheral blood mononuclear cells from 230 individuals, precisely mapping immune aging. T cell (TC) transcriptomes are key predictors, revealing hallmarks such as naive cell loss and clonal contraction. This framework identifies the transcription factor RUNX1, whose expression declines with age in TCs, as a central regulator. Functional studies demonstrate that RUNX1 deletion in young TCs induces senescence, while its restoration in aged CD8+ TCs alleviates senescent phenotypes in vitro and in vivo. Our study provides a quantitative tool for assessing immunosenescence and nominates RUNX1 as a target for rejuvenating aged immunity.