细胞对 DNA 损伤和氧化应激的反应中 MAPK 和 p53 动态的协调。

Coordination of MAPK and p53 dynamics in the cellular responses to DNA damage and oxidative stress.

机构信息

Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN, USA.

Masonic Cancer Center, University of Minnesota, Minneapolis, MN, USA.

出版信息

Mol Syst Biol. 2022 Dec;18(12):e11401. doi: 10.15252/msb.202211401.

Abstract

In response to different cellular stresses, the transcription factor p53 undergoes different dynamics. p53 dynamics, in turn, control cell fate. However, distinct stresses can generate the same p53 dynamics but different cell fate outcomes, suggesting integration of dynamic information from other pathways is important for cell fate regulation. To determine how MAPK activities affect p53-mediated responses to DNA breaks and oxidative stress, we simultaneously tracked p53 and either ERK, JNK, or p38 activities in single cells. While p53 dynamics were comparable between the stresses, cell fate outcomes were distinct. Combining MAPK dynamics with p53 dynamics was important for distinguishing between the stresses and for generating temporal ordering of cell fate pathways. Furthermore, cross-talk between MAPKs and p53 controlled the balance between proliferation and cell death. These findings provide insight into how cells integrate signaling pathways with distinct temporal patterns of activity to encode stress specificity and drive different cell fate decisions.

摘要

针对不同的细胞应激,转录因子 p53 会发生不同的动力学变化。p53 的动力学变化反过来又控制着细胞命运。然而,不同的应激可以产生相同的 p53 动力学变化,但却产生不同的细胞命运结果,这表明整合来自其他途径的动态信息对于细胞命运调控很重要。为了确定 MAPK 活性如何影响 p53 介导的对 DNA 断裂和氧化应激的反应,我们在单细胞中同时跟踪 p53 和 ERK、JNK 或 p38 的活性。虽然两种应激下的 p53 动力学相似,但细胞命运结果却不同。将 MAPK 动力学与 p53 动力学相结合对于区分应激和生成细胞命运途径的时间顺序很重要。此外,MAPK 和 p53 之间的相互作用控制着增殖和细胞死亡之间的平衡。这些发现为我们提供了深入了解细胞如何将具有不同时间模式的信号通路整合在一起,以编码应激特异性并驱动不同的细胞命运决定的机制。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2f75/9724178/b0ef28611f22/MSB-18-e11401-g008.jpg

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