文献检索文档翻译深度研究
Suppr Zotero 插件Zotero 插件
邀请有礼套餐&价格历史记录

新学期,新优惠

限时优惠:9月1日-9月22日

30天高级会员仅需29元

1天体验卡首发特惠仅需5.99元

了解详情
不再提醒
插件&应用
Suppr Zotero 插件Zotero 插件浏览器插件Mac 客户端Windows 客户端微信小程序
高级版
套餐订阅购买积分包
AI 工具
文献检索文档翻译深度研究
关于我们
关于 Suppr公司介绍联系我们用户协议隐私条款
关注我们

Suppr 超能文献

核心技术专利:CN118964589B侵权必究
粤ICP备2023148730 号-1Suppr @ 2025

No overt nucleosome eviction at deprotected telomeres.

作者信息

Wu Peng, de Lange Titia

机构信息

Laboratory for Cell Biology and Genetics, The Rockefeller University, 1230 York Avenue, New York, NY 10021, USA.

出版信息

Mol Cell Biol. 2008 Sep;28(18):5724-35. doi: 10.1128/MCB.01764-07. Epub 2008 Jul 14.


DOI:10.1128/MCB.01764-07
PMID:18625717
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC2546919/
Abstract

Dysfunctional telomeres elicit the canonical DNA damage response, which includes the activation of the ATM or ATR kinase signaling pathways and end processing by nonhomologous end joining (NHEJ) or homologous recombination (HR). The cellular response to DNA double-strand breaks has been proposed to involve chromatin remodeling and nucleosome eviction, but whether dysfunctional telomeres undergo chromatin reorganization is not known. Here, we report on the nucleosomal organization of telomeres that have become deprotected through the deletion of the shelterin components TRF2 or POT1. We found no evidence of changes in the nucleosomal organization of the telomeric chromatin or nucleosome eviction near the telomere terminus. An unaltered chromatin structure was observed at telomeres lacking TRF2, which activate the ATM kinase and are a substrate for NHEJ. Similarly, telomeres lacking POT1a and POT1b, which activate the ATR kinase, showed no overt nucleosome eviction. Finally, telomeres lacking TRF2 and Ku70, which are processed by HR, appeared to maintain their original nucleosomal organization. We conclude that ATM signaling, ATR signaling, NHEJ, and HR at deprotected telomeres can take place in the absence of overt nucleosome eviction.

摘要

相似文献

[1]
No overt nucleosome eviction at deprotected telomeres.

Mol Cell Biol. 2008-9

[2]
Cell cycle-dependent role of MRN at dysfunctional telomeres: ATM signaling-dependent induction of nonhomologous end joining (NHEJ) in G1 and resection-mediated inhibition of NHEJ in G2.

Mol Cell Biol. 2009-10

[3]
Removal of shelterin reveals the telomere end-protection problem.

Science. 2012-5-4

[4]
Multiple roles for MRE11 at uncapped telomeres.

Nature. 2009-8-13

[5]
DNA processing is not required for ATM-mediated telomere damage response after TRF2 deletion.

Nat Cell Biol. 2005-7

[6]
Protection of telomeres through independent control of ATM and ATR by TRF2 and POT1.

Nature. 2007-8-30

[7]
Ku70 stimulates fusion of dysfunctional telomeres yet protects chromosome ends from homologous recombination.

Nat Cell Biol. 2006-8

[8]
DNA-damage response and repair activities at uncapped telomeres depend on RNF8.

Nat Cell Biol. 2011-8-21

[9]
53BP1 promotes non-homologous end joining of telomeres by increasing chromatin mobility.

Nature. 2008-11-27

[10]
Dysfunctional telomeres activate an ATM-ATR-dependent DNA damage response to suppress tumorigenesis.

EMBO J. 2007-11-14

引用本文的文献

[1]
Shaping human telomeres: from shelterin and CST complexes to telomeric chromatin organization.

Nat Rev Mol Cell Biol. 2021-4

[2]
BRM-SWI/SNF chromatin remodeling complex enables functional telomeres by promoting co-expression of TRF2 and TRF1.

PLoS Genet. 2020-6-5

[3]
Chromatin fiber structural motifs as regulatory hubs of genome function?

Essays Biochem. 2019-4-23

[4]
Emerging roles of telomeric chromatin alterations in cancer.

J Exp Clin Cancer Res. 2019-1-17

[5]
Local enrichment of HP1alpha at telomeres alters their structure and regulation of telomere protection.

Nat Commun. 2018-9-4

[6]
Fission yeast telosomes: non-canonical histone-containing chromatin structures dependent on shelterin and RNA.

Nucleic Acids Res. 2018-9-28

[7]
The DDR at telomeres lacking intact shelterin does not require substantial chromatin decompaction.

Genes Dev. 2017-3-15

[8]
Preferential extension of short telomeres induced by low extracellular pH.

Nucleic Acids Res. 2016-9-30

[9]
Editorial: The Evolving Telomeres.

Front Genet. 2016-4-6

[10]
TRF1 and TRF2 binding to telomeres is modulated by nucleosomal organization.

Nucleic Acids Res. 2015-7-13

本文引用的文献

[1]
Engineered telomere degradation models dyskeratosis congenita.

Genes Dev. 2008-7-1

[2]
Cell cycle control of telomere protection and NHEJ revealed by a ts mutation in the DNA-binding domain of TRF2.

Genes Dev. 2008-5-1

[3]
Quantitative telomeric overhang determination using a double-strand specific nuclease.

Nucleic Acids Res. 2008-2

[4]
Distinct roles for SWR1 and INO80 chromatin remodeling complexes at chromosomal double-strand breaks.

EMBO J. 2007-9-19

[5]
Protection of telomeres through independent control of ATM and ATR by TRF2 and POT1.

Nature. 2007-8-30

[6]
Telomere protection by mammalian Pot1 requires interaction with Tpp1.

Nat Struct Mol Biol. 2007-8

[7]
Telomeric nucleosomes are intrinsically mobile.

J Mol Biol. 2007-6-22

[8]
Roles of ATM and NBS1 in chromatin structure modulation and DNA double-strand break repair.

Nat Cell Biol. 2007-6

[9]
Telomere length regulates the epigenetic status of mammalian telomeres and subtelomeres.

Nat Genet. 2007-2

[10]
RSC mobilizes nucleosomes to improve accessibility of repair machinery to the damaged chromatin.

Mol Cell Biol. 2007-3

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索

推荐工具

医学文档翻译智能文献检索