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对 NHEJ 修复途径的重要调节因子,其在染色质中 (7456):50-54
的募集成为当前的研究热点。多项研究证实53BP1 [9] LU X,TANG M,ZHU Q,et al. GLP⁃catalyzed H4K16me1
与染色质的结合主要受组蛋白修饰的调节,凸显了 promotes 53BP1 recruitment to permit DNA damage re⁃
进一步研究组蛋白与53BP1作用机制的重要性。现 pair and cell survival[J]. Nucleic Acids Res,2019,47
(21):10977-10993
有的研究大多关注修复调节因子对53BP1募集的影
[10] SENGUPTA A,HALDAR D. Human sirtuin 3(SIRT3)
响。然而,组蛋白修饰在 53BP1 募集中发挥的作用
deacetylates histone H3 lysine 56 to promote nonhomolo⁃
也同样值得关注与进一步探索。本文综述了53BP1
gous end joining repair[J]. DNA Repair,2018,61:1-16
结 构 、53BP1 募 集 分 子 机 制 以 及 组 蛋 白 修 饰 在
[11] VAZQUEZ B N,THACKRAY J K,SIMONET N G,et al.
53BP1 募集中的作用机制,但仍有许多问题和重要 SIRT7 mediates L1 elements transcriptional repression
的研究方向需要继续探索。组蛋白 H3K18、H3K56 and their association with the nuclear lamina[J]. Nucleic
如何与53BP1相互作用以及它们是否影响53BP1识 Acids Res,2019,47(15):7870-7885
别 K2AK15ub、H4K20me2,尚有待深入研究。随着 [12] CALLEN E,ZONG D,WU W,et al. 53BP1 enforces dis⁃
组蛋白修饰与 53BP1 募集的深度开发,可为癌症治 tinct pre⁃and post⁃resection blocks on homologous recom⁃
疗提供更多选择。 bination[J]. Mol Cell,2020,77(1):26-38
[13]OTSUKA K,TOMITA M. Concurrent live imaging of DNA
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double⁃strand break repair and cell⁃cycle progression by
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