Hepatitis B virus cccDNA is formed through distinct repair processes of each strand.

Hepatitis B virus cccDNA is formed through distinct repair processes of each strand.
复制标题

DOI:
10.1038/s41467-021-21850-9
复制
发表时间:
2021-03-11
影响因子:
16.6
通讯作者:
Ploss A
Ploss A
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Wei L;Ploss A

文献摘要

参考文献

被引文献

相似文献

乙型肝炎病毒 (HBV) 是一种高度传染性的病原体,影响着世界三分之一以上的人口,每年导致近百万人死亡。 HBV共价闭合环状DNA(cccDNA)的形成和持续存在是HBV慢性化的根本原因。然而,从松弛环状 DNA (rcDNA) 形成 cccDNA 的详细分子机制仍然不透明。在这里,我们表明,HBV rcDNA 的负链和正链损伤需要生化修复系统中不同组的人类修复因子。我们证明正链修复类似于DNA滞后链合成,并且需要增殖细胞核抗原(PCNA)、复制因子C(RFC)复合物、DNA聚合酶δ(POLδ)、瓣状核酸内切酶1(FEN-1)和DNA连接酶1(LIG1)。修复负链仅需要 FEN-1 和 LIG1。我们的研究结果提供了关于 HBV rcDNA 如何在生化修复系统中修复形成 cccDNA 的详细机制。 HBV共价闭合环状DNA(cccDNA)能够并持续存在于慢性感染中,但其形成的分子机制尚不清楚。在此,Wei 和 Ploss 阐明了将松弛的环状 DNA 转化为 cccDNA 的详细动力学和生化步骤。
Hepatitis B virus (HBV) is a highly contagious pathogen that afflicts over a third of the world’s population, resulting in close to a million deaths annually. The formation and persistence of the HBV covalently closed circular DNA (cccDNA) is the root cause of HBV chronicity. However, the detailed molecular mechanism of cccDNA formation from relaxed circular DNA (rcDNA) remains opaque. Here we show that the minus and plus-strand lesions of HBV rcDNA require different sets of human repair factors in biochemical repair systems. We demonstrate that the plus-strand repair resembles DNA lagging strand synthesis, and requires proliferating cell nuclear antigen (PCNA), the replication factor C (RFC) complex, DNA polymerase delta (POLδ), flap endonuclease 1 (FEN-1), and DNA ligase 1 (LIG1). Only FEN-1 and LIG1 are required for the repair of the minus strand. Our findings provide a detailed mechanistic view of how HBV rcDNA is repaired to form cccDNA in biochemical repair systems. HBV covalently closed circular DNA (cccDNA) enables and persists in chronic infection, but the molecular mechanism of its formation is unclear. Here, Wei and Ploss elucidate the detailed kinetics and biochemical steps by which the relaxed circular DNA is converted into cccDNA.
DOI: 10.20517/2394-5079.2016.05
发表时间: 2016
期刊: Hepatoma research
影响因子: --
作者:
Lamontagne RJ;Bagga S;Bouchard MJ
通讯作者: Bouchard MJ
DOI: 10.1371/journal.ppat.1007124
发表时间: 2018-06
期刊: PLoS pathogens
影响因子: 6.7
作者:
Kitamura K;Que L;Shimadu M;Koura M;Ishihara Y;Wakae K;Nakamura T;Watashi K;Wakita T;Muramatsu M
通讯作者: Muramatsu M
DOI: 10.1093/nar/gkw556
发表时间: 2016-09-30
影响因子: 14.9
作者:
Ganai RA;Zhang XP;Heyer WD;Johansson E
通讯作者: Johansson E
DOI: 10.1093/biomet/93.3.491
发表时间: 2006-09-01
期刊: BIOMETRIKA
影响因子: 2.7
作者:
Benjamini, Yoav;Krieger, Abba M.;Yekutieli, Daniel
通讯作者: Yekutieli, Daniel
DOI: 10.1073/pnas.1409986111
发表时间: 2014-10-07
影响因子: 11.1
作者:
Koeniger, Christian;Wingert, Ida;Nassal, Michael
通讯作者: Nassal, Michael