《科学》 第391卷 第6784期 · 2026年1月29日 · 中文解读
NDRG1基因缺失增强衰老肌肉干细胞激活并改善肌肉再生
NDRG1 gene ablation in aged MuSCs results in enhanced MuSC activation and an improved rate of muscle regeneration
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这篇讲什么
本文研究了NDRG1基因在衰老肌肉干细胞中的表达增加如何导致细胞激活减慢和肌肉再生受损,并发现敲除NDRG1可恢复衰老细胞的激活能力,但会降低其存活能力。
原文开头
We surmised that the increased abundance of NDRG1 with age might explain the decreased rate of cell cycle entry of aged MuSCs (8–10). To test this, we generated mice with a MuSC- specific conditional deletion of NDRG1 (Pax7CreER/+;NDRG1fl/fl;ROSAeYFP/+, hereafter referred to as NDRG1cKO mice) to ablate NDRG1 after tamoxifen (TMX) injection (fig. S2A). Loss of NDRG1 was confirmed by protein immunoblot analysis of iso lated MuSCs and immunofluorescence staining of isolated myofibers (Fig. 2, A and B). To probe NDRG1 function during aging, NDRG1cKO mice were aged to ~20 months and then treated with TMX. Two weeks later, MuSCs were isolated from hindlimb muscles of wild- type (WT) and NDRG1cKO mice (Fig. 2C). …
摘自《科学》(Science)第391卷 第6784期 · 2026年1月29日。仅引用开头一小段供了解文章,版权归原刊所有,全文请阅读原刊。

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