MPK-1/ERK pathway regulates DNA damage response during development through DAF-16/FOXO.
MPK-1/ERK pathway regulates DNA damage response during development through DAF-16/FOXO.
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DOI:
10.1093/nar/gky404
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发表时间:
2018-07-06
影响因子:
14.9
通讯作者:
Schumacher B
中科院分区:
文献类型:
--
作者:
Bianco JN;Schumacher B
Ultraviolet (UV) induces distorting lesions to the DNA that can lead to stalling of the RNA polymerase II (RNAP II) and that are removed by transcription-coupled nucleotide excision repair (TC-NER). In humans, mutations in the TC-NER genes CSA and CSB lead to severe postnatal developmental defects in Cockayne syndrome patients. In Caenorhabditis elegans, mutations in the TC-NER genes csa-1 and csb-1, lead to developmental growth arrest upon UV treatment. We conducted a genetic suppressor screen in the nematode to identify mutations that could suppress the developmental defects in csb-1 mutants. We found that mutations in the ERK1/2 MAP kinase mpk-1 alleviate the developmental retardation in TC-NER mutants, while constitutive activation of the RAS-MAPK pathway exacerbates the DNA damage-induced growth arrest. We show that MPK-1 act via insulin/insulin-like signaling pathway and regulates the FOXO transcription factor DAF-16 to mediate the developmental DNA damage response.
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