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CELL:当真皮细胞失去其身份和功能时,皮肤就老化了

2018-11-10 海北 MedSci原创

使用群体和单细胞转录组学,以及长期谱系追踪,研究人员研究了在影响寿命的不同饮食方案下,小鼠皮肤成纤维细胞是否在生理衰老期间被改变。

在衰老期间,基质功能被认为是受损的,但至今为止,人们很少知道这是否源于成纤维细胞的变化。使用群体和单细胞转录组学,以及长期谱系追踪,研究人员研究了在影响寿命的不同饮食方案下,小鼠皮肤成纤维细胞是否在生理衰老期间被改变。

研究人员发现,衰老的成纤维细胞的身份变得不确定,年轻皮肤中存在的成纤维细胞的状态不再明确划分。此外,衰老的成纤维细胞不仅降低了参与细胞外基质形成的基因的表达,而且还获得了脂肪形成性状,变得更加类似于新生儿促脂肪形成的成纤维细胞。

这些改变对全身代谢变化敏感:长期热量限制可逆地阻止了它们,而高脂肪饮食加强了它们。

因此,该结果突出了细胞特性的丧失和脂肪形成特征的获得,作为细胞衰老的机制,其受到全身代谢的影响。


原始出处:

Marion Claudia Salzer et al. Identity Noise and Adipogenic Traits Characterize Dermal Fibroblast Aging. Cell, 2018; DOI: 10.1016/j.cell.2018.10.012


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    2019-08-26 维他命
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    2018-11-11 jijin198608

    为啥搜不到全文呢

    0

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