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Nrf2在暴露于电离辐射后可促进细胞存活。

Nrf2 promotes survival following exposure to ionizing radiation.

作者信息

Sekhar Konjeti R, Freeman Michael L

机构信息

Department of Radiation Oncology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA.

Department of Radiation Oncology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA.

出版信息

Free Radic Biol Med. 2015 Nov;88(Pt B):268-274. doi: 10.1016/j.freeradbiomed.2015.04.035. Epub 2015 May 12.

Abstract

Nrf2 is a transcription factor that promotes antioxidant and drug-metabolizing gene expression. It also regulates the transcription of genes involved in carbohydrate and lipid metabolism, NADPH regeneration, and heme and iron metabolism, as well as proteasome metabolism. Emerging research has identified Nrf2 as a critical factor for promoting survival of mammalian cells subjected to ionizing radiation. At a mechanistic level, Nrf2 promotes the repair of DNA damage and drives detoxification of superoxide that is generated hours to days after irradiation. This review summarizes research in these areas and discusses targeting of Nrf2 in radiation-resistant cancer and Nrf2׳s role in mitigating acute radiation syndrome.

摘要

Nrf2是一种促进抗氧化和药物代谢基因表达的转录因子。它还调节参与碳水化合物和脂质代谢、NADPH再生、血红素和铁代谢以及蛋白酶体代谢的基因的转录。新出现的研究已将Nrf2确定为促进受电离辐射的哺乳动物细胞存活的关键因素。在机制层面,Nrf2促进DNA损伤的修复,并驱动辐射后数小时至数天产生的超氧化物的解毒。本综述总结了这些领域的研究,并讨论了在抗辐射癌症中靶向Nrf2以及Nrf2在减轻急性放射综合征中的作用。

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