To skip or not to skip: choosing repriming to tolerate DNA damage.
To skip or not to skip: choosing repriming to tolerate DNA damage.
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跳过还是不跳过:选择重新引发以耐受DNA损伤。
DOI:
10.1016/j.molcel.2021.01.012
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发表时间:
2021-02-18
期刊:
影响因子:
16
通讯作者:
Vindigni A
中科院分区:
文献类型:
--
作者:
Quinet A;Tirman S;Cybulla E;Meroni A;Vindigni A
Accurate DNA replication is constantly threatened by DNA lesions arising from endogenous and exogenous sources. Specialized DNA replication stress response pathways ensure replication fork progression in the presence of DNA lesions with minimal delay in fork elongation. These pathways broadly include translesion DNA synthesis, template switching, and replication fork repriming. Here, we discuss recent advances toward our understanding of the mechanisms that regulate the fine-tuned balance between these different replication stress response pathways. We also discuss the molecular pathways required to fill single-stranded DNA gaps that accumulate throughout the genome after repriming, and the biological consequences of using repriming instead of other DNA damage tolerance pathways on genome integrity and cell fitness. Replication stress response pathways allow DNA replication to tolerate obstacles with minimal delay in fork elongation. In this review, Quinet et al. discuss the molecular contexts in which cells choose repriming over template switching and translesion synthesis to tolerate these obstacles, and the consequences of this choice on genome integrity.
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