期刊
ANNUAL REVIEW OF BIOCHEMISTRY, VOL 90, 2021
卷 90, 期 -, 页码 165-191出版社
ANNUAL REVIEWS
DOI: 10.1146/annurev-biochem-081420-095551
关键词
break-induced replication; BIR; microhomology-mediated break-induced replication; MMBIR; alternative lengthening of telomeres; ALT; double-strand DNA breaks; DSBs; complex genome rearrangements; CRGs
资金
- National Institutes of Health [R35GM127006]
DSB repair is essential for cell survival, but some pathways can be mutagenic and lead to genetic instability. BIR, a repair pathway for one-ended DSBs, has been studied in yeast and mammalian systems and is linked to high levels of genetic instability. Recent research has also revealed the role of microhomology-mediated BIR in complex genomic rearrangements underlying human pathologies.
Double-strand DNA breaks (DSBs) are the most lethal type of DNA damage, making DSB repair critical for cell survival. However, some DSB repair pathways are mutagenic and promote genome rearrangements, leading to genome destabilization. One such pathway is break-induced replication (BIR), which repairs primarily one-ended DSBs, similar to those formed by collapsed replication forks or telomere erosion. BIR is initiated by the invasion of a broken DNA end into a homologous template, synthesizes new DNA within the context of a migrating bubble, and is associated with conservative inheritance of new genetic material. This mode of synthesis is responsible for a high level of genetic instability associated with BIR. Eukaryotic BIR was initially investigated in yeast, but now it is also actively studied in mammalian systems. Additionally, a significant breakthrough has been made regarding the role of microhomology-mediated BIR in the formation of complex genomic rearrangements that underly various human pathologies.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据