FoxO maintains a genuine quiescent muscle stem-cell state until geriatric age (RNA-seq)
收藏干细胞与再生医学数据中心2022-02-20 更新2024-03-06 收录
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We identify two quiescent stem-cell states through relative CD34 expression: CD34High, with stemness properties (genuine state), and CD34Low, more committed to myogenic differentiation (primed state). The genuine-quiescent state is preserved into later life succumbing only in extreme old age due to acquisition of primed-state traits. We identified niche-derived IGF1-dependent Akt activation as detrimental to the genuine stem-cell state by imposing primed-state features via FoxO inhibition. Interventions to neutralize Akt and promote FoxO activity drive primed-to-genuine state conversion, while FoxO inactivation deteriorates the genuine state at young age, causing muscle regenerative failure, as in geriatric mice.
提供机构：
NIAMS/NIH
创建时间：
2022-02-20
