State Key Laboratory for Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center of Biotherapy, Chengdu, 610041, P.R. China; Department of Neurology, the Affiliated Hospital of Hainan Medical College, Haikou, 570102, P.R. China.
State Key Laboratory for Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center of Biotherapy, Chengdu, 610041, P.R. China.
Free Radic Biol Med. 2015 Dec;89:452-65. doi: 10.1016/j.freeradbiomed.2015.08.030. Epub 2015 Oct 9.
Redox signaling plays important roles in the regulation of cell death and survival in response to cancer therapy. Autophagy and apoptosis are discrete cellular processes mediated by distinct groups of regulatory and executioner molecules, and both are thought to be cellular responses to various stress conditions including oxidative stress, therefore controlling cell fate. Basic levels of reactive oxygen species (ROS) may function as signals to promote cell proliferation and survival, whereas increase of ROS can induce autophagy and apoptosis by damaging cellular components. Growing evidence in recent years argues for ROS that below detrimental levels acting as intracellular signal transducers that regulate autophagy and apoptosis. ROS-regulated autophagy and apoptosis can cross-talk with each other. However, how redox signaling determines different cell fates by regulating autophagy and apoptosis remains unclear. In this review, we will focus on understanding the delicate molecular mechanism by which autophagy and apoptosis are finely orchestrated by redox signaling and discuss how this understanding can be used to develop strategies for the treatment of cancer.
氧化还原信号在调节细胞死亡和存活以应对癌症治疗方面发挥着重要作用。自噬和细胞凋亡是由不同的调节和执行分子介导的离散细胞过程,两者都被认为是细胞对包括氧化应激在内的各种应激条件的反应,因此控制着细胞命运。基础水平的活性氧 (ROS) 可能作为促进细胞增殖和存活的信号发挥作用,而 ROS 的增加可以通过破坏细胞成分来诱导自噬和细胞凋亡。近年来越来越多的证据表明,ROS 在有害水平以下作为细胞内信号转导物发挥作用,调节自噬和细胞凋亡。ROS 调节的自噬和细胞凋亡可以相互交流。然而,氧化还原信号如何通过调节自噬和细胞凋亡来决定不同的细胞命运尚不清楚。在这篇综述中,我们将重点探讨理解氧化还原信号如何精细调控自噬和细胞凋亡的微妙分子机制,并讨论如何利用这一理解来开发癌症治疗策略。