DEV CELL:抗氧化蛋白Nrf2竟能驱动细胞衰老和肿瘤发生

2018-08-05 海北 MedSci原创

Nrf2是抗氧化防御系统的关键调节剂,药理学Nrf2激活是癌症预防和促进组织修复的有前景的策略。然而,最近研究人员发现,成纤维细胞中Nrf2的激活可以诱导细胞衰老。

Nrf2是抗氧化防御系统的关键调节剂,药理学Nrf2激活是癌症预防和促进组织修复的有前景的策略。然而,最近研究人员发现,成纤维细胞中Nrf2的激活可以诱导细胞衰老。

使用转录组学,基质蛋白质组学,染色质免疫沉淀和生物信息学的组合,研究人员证明,具有活化的Nrf2的成纤维细胞能够沉积促进衰老的基质,纤溶酶原激活物抑制剂-1是衰老程序的关键诱导物。

在体内,成纤维细胞中Nrf2的活化促进皮肤伤口的再上皮化,但也促进皮肤肿瘤发生。促肿瘤发生活性具有普遍意义,因为皮肤成纤维细胞中的Nrf2激活诱导了肿瘤相关特有的基因的表达,与来自不同小鼠和人肿瘤的基因特征相似。

因此,活化的Nrf2可能可以作为癌症相关成纤维细胞表型的标志物。这些数据突出了Nrf2的两面性,以及对该转录因子的时间控制激活的需要。


原始出处:

Paul Hiebert et al. Nrf2-Mediated Fibroblast Reprogramming Drives Cellular Senescence by Targeting the MatrisomeDevelopmental Cell, 2018; DOI:https://doi.org/10.1016/j.devcel.2018.06.012


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    2019-05-04 fzwish20000
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    2018-12-19 维他命
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    2018-08-07 minzju5053
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    2018-08-06 kafei

    学习了谢谢

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