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自可以抵消在衰老的造血干细胞中由炎症驱动的糖溶性损伤
Paul V Dellorusso1, Melissa A Proven1, Fernando J Calero-Nieto2
1Columbia Stem Cell Initiative, Department of Genetics & Development, Columbia University, New York, NY 10032, USA.
Cell stem cell
|May 16, 2024
概括
衰老通过炎症驱动的代谢变化损害了造血干细胞 (HSC). 自诱导可以恢复HSC功能,为与年龄相关的干细胞功能障碍提供治疗点.
科学领域:
- 细胞生物学 细胞生物学
- 血液学 血液学 血液学
- 老年学是一门学科.
背景情况:
- 自对于干细胞的功能和寿命至关重要.
- 衰老会损害造血干细胞 (HSC) 的再生能力,但触发因素尚不清楚.
- 老化骨髓中的慢性炎症会影响HSCs.
研究的目的:
- 在炎症条件下研究老年HSC中自的作用.
- 为了识别触发自和维持老年HSC功能的信号.
- 探索自诱导作为恢复高细胞再生潜力的策略.
主要方法:
- 研究了老化的小鼠骨髓 (BM) 利基和HSC.
- 分析了葡萄糖代谢,糖解以及AKT/FoxO信号通路.
- 研究了炎症和自调节对HSC功能的影响.
- 利用短期禁食/再食模式来诱导自.
主要成果:
- 炎症会通过Socs3/AKT/FoxO信号破坏HSC葡萄糖的吸收和糖解.
- 自是一种对炎症的适应性反应,维护高细胞核静止和代谢适应.
- 通过禁食/再的过渡性自诱导使糖解正常化,并增强HSC的再生潜力.
- 确定了由炎症驱动的葡萄糖低代谢作为与年龄相关的HSC功能障碍的关键因素.
结论:
- 自作用作为一种保护机制,防止炎症诱导的HSC衰老.
- 向自可以重置老化的高细胞再生能力.
- 恢复老年HSC的代谢功能对于维持血液形成至关重要.
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