PTEN regulates RPA1 and protects DNA replication forks

Tumor suppressor PTEN regulates cellular activities and controls genome stability through multiple mechanisms. In this study, we report that PTEN is necessary for the protection of DNA replication forks against replication stress. We show that deletion of PTEN leads to replication fork collapse and...

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Published inCell research Vol. 25; no. 11; pp. 1189 - 1204
Main Authors Wang, Guangxi, Li, Yang, Wang, Pan, Liang, Hui, Cui, Ming, Zhu, Minglu, Guo, Limei, Su, Qian, Sun, Yujie, McNutt, Michael A, Yin, Yuxin
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group UK 01.11.2015
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Abstract Tumor suppressor PTEN regulates cellular activities and controls genome stability through multiple mechanisms. In this study, we report that PTEN is necessary for the protection of DNA replication forks against replication stress. We show that deletion of PTEN leads to replication fork collapse and chromosomal instability upon fork stalling following nucleotide depletion induced by hydroxyurea. PTEN is physically associated with replication protein A 1 (RPA1) via the RPA1 C-terminal domain. STORM and iPOND reveal that PTEN is localized at replication sites and promotes RPA1 accumulation on replication forks. PTEN recruits the deubiquitinase OTUB1 to mediate RPA1 deubiquitination. RPA1 deletion confers a phenotype like that observed in PTEN knockout cells with stalling of rep- lication forks. Expression of PTEN and RPA1 shows strong correlation in colorectal cancer. Heterozygous disruption of RPA1 promotes tumorigenesis in mice. These results demonstrate that PTEN is essential for DNA replication fork protection. We propose that RPA1 is a target of PTEN function in fork protection and that PTEN maintains genome stability through regulation of DNA replication.
AbstractList Tumor suppressor PTEN regulates cellular activities and controls genome stability through multiple mechanisms. In this study, we report that PTEN is necessary for the protection of DNA replication forks against replication stress. We show that deletion of PTEN leads to replication fork collapse and chromosomal instability upon fork stalling following nucleotide depletion induced by hydroxyurea. PTEN is physically associated with replication protein A 1 (RPA1) via the RPA1 C-terminal domain. STORM and iPOND reveal that PTEN is localized at replication sites and promotes RPA1 accumulation on replication forks. PTEN recruits the deubiquitinase OTUB1 to mediate RPA1 deubiquitination. RPA1 deletion confers a phenotype like that observed in PTEN knockout cells with stalling of replication forks. Expression of PTEN and RPA1 shows strong correlation in colorectal cancer. Heterozygous disruption of RPA1 promotes tumorigenesis in mice. These results demonstrate that PTEN is essential for DNA replication fork protection. We propose that RPA1 is a target of PTEN function in fork protection and that PTEN maintains genome stability through regulation of DNA replication.
Tumor suppressor PTEN regulates cellular activities and controls genome stability through multiple mechanisms. In this study, we report that PTEN is necessary for the protection of DNA replication forks against replication stress. We show that deletion of PTEN leads to replication fork collapse and chromosomal instability upon fork stalling following nucleotide depletion induced by hydroxyurea. PTEN is physically associated with replication protein A 1 (RPA1) via the RPA1 C-terminal domain. STORM and iPOND reveal that PTEN is localized at replication sites and promotes RPA1 accumulation on replication forks. PTEN recruits the deubiquitinase OTUB1 to mediate RPA1 deubiquitination. RPA1 deletion confers a phenotype like that observed in PTEN knockout cells with stalling of rep- lication forks. Expression of PTEN and RPA1 shows strong correlation in colorectal cancer. Heterozygous disruption of RPA1 promotes tumorigenesis in mice. These results demonstrate that PTEN is essential for DNA replication fork protection. We propose that RPA1 is a target of PTEN function in fork protection and that PTEN maintains genome stability through regulation of DNA replication.
Tumor suppressor PTEN regulates cellular activities and controls genome stability through multiple mechanisms. In this study, we report that PTEN is necessary for the protection of DNA replication forks against replication stress. We show that deletion of PTEN leads to replication fork collapse and chromosomal instability upon fork stalling following nucleotide depletion induced by hydroxyurea. PTEN is physically associated with replication protein A 1 (RPA1) via the RPA1 C-terminal domain. STORM and iPOND reveal that PTEN is localized at replication sites and promotes RPA1 accumulation on replication forks. PTEN recruits the deubiquitinase OTUB1 to mediate RPA1 deubiquitination. RPA1 deletion confers a phenotype like that observed in PTEN knockout cells with stalling of replication forks. Expression of PTEN and RPA1 shows strong correlation in colorectal cancer. Heterozygous disruption of RPA1 promotes tumorigenesis in mice. These results demonstrate that PTEN is essential for DNA replication fork protection. We propose that RPA1 is a target of PTEN function in fork protection and that PTEN maintains genome stability through regulation of DNA replication.Tumor suppressor PTEN regulates cellular activities and controls genome stability through multiple mechanisms. In this study, we report that PTEN is necessary for the protection of DNA replication forks against replication stress. We show that deletion of PTEN leads to replication fork collapse and chromosomal instability upon fork stalling following nucleotide depletion induced by hydroxyurea. PTEN is physically associated with replication protein A 1 (RPA1) via the RPA1 C-terminal domain. STORM and iPOND reveal that PTEN is localized at replication sites and promotes RPA1 accumulation on replication forks. PTEN recruits the deubiquitinase OTUB1 to mediate RPA1 deubiquitination. RPA1 deletion confers a phenotype like that observed in PTEN knockout cells with stalling of replication forks. Expression of PTEN and RPA1 shows strong correlation in colorectal cancer. Heterozygous disruption of RPA1 promotes tumorigenesis in mice. These results demonstrate that PTEN is essential for DNA replication fork protection. We propose that RPA1 is a target of PTEN function in fork protection and that PTEN maintains genome stability through regulation of DNA replication.
Author Guangxi Wang Yang Li Pan Wang Hui Liang Ming Cui Minglu Zhu Limei Guo Qian Su Yujie Sun Michael A McNut Yuxin Yin
AuthorAffiliation Institute of Systems Biomedicine, Department of Pathology, School of Basic Medical Sciences, Peking-Tsinghua Center for Life Sciences, Peking University Health Science Center, Beijing 100191 China Biodynamic Optical Imaging Center, Peking Universi- ty, Beijing 100871, China
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DocumentTitleAlternate PTEN regulates RPA1 and protects DNA replication forks
PTEN controls DNA replication through RPA1
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Issue 11
Keywords replication
PTEN
RPA1
fork protection
OTUB1
Language English
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Notes 31-1568
Guangxi Wang, Yang Li, Pan Wang, Hui Liang, Ming Cui, Minglu Zhu, Limei Guo, Qian Su,Yujie Sun, Michael A McNutt, Yuxin Yin(1.Institute of Systems Biomedicine, Department of Pathology, School of Basic Medical Sciences, Peking-Tsinghua Center for Life Sciences, Peking University Health Science Center, Beijing 100191 China, 2Biodynamic Optical Imaging Center, Peking University, Beijing 100871, China)
PTEN; RPA1; replication; fork protection; OTUB1
Tumor suppressor PTEN regulates cellular activities and controls genome stability through multiple mechanisms. In this study, we report that PTEN is necessary for the protection of DNA replication forks against replication stress. We show that deletion of PTEN leads to replication fork collapse and chromosomal instability upon fork stalling following nucleotide depletion induced by hydroxyurea. PTEN is physically associated with replication protein A 1 (RPA1) via the RPA1 C-terminal domain. STORM and iPOND reveal that PTEN is localized at replication sites and promotes RPA1 accumulation on replication forks. PTEN recruits the deubiquitinase OTUB1 to mediate RPA1 deubiquitination. RPA1 deletion confers a phenotype like that observed in PTEN knockout cells with stalling of rep- lication forks. Expression of PTEN and RPA1 shows strong correlation in colorectal cancer. Heterozygous disruption of RPA1 promotes tumorigenesis in mice. These results demonstrate that PTEN is essential for DNA replication fork protection. We propose that RPA1 is a target of PTEN function in fork protection and that PTEN maintains genome stability through regulation of DNA replication.
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These two authors contributed equally to this work.
OpenAccessLink https://www.nature.com/articles/cr2015115.pdf
PMID 26403191
PQID 1729044247
PQPubID 536307
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crossref_citationtrail_10_1038_cr_2015_115
crossref_primary_10_1038_cr_2015_115
springer_journals_10_1038_cr_2015_115
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PublicationDate 2015-11-01
PublicationDateYYYYMMDD 2015-11-01
PublicationDate_xml – month: 11
  year: 2015
  text: 2015-11-01
  day: 01
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PublicationPlace_xml – name: London
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PublicationTitle Cell research
PublicationTitleAbbrev Cell Res
PublicationTitleAlternate Cell Research
PublicationYear 2015
Publisher Nature Publishing Group UK
Nature Publishing Group
Publisher_xml – name: Nature Publishing Group UK
– name: Nature Publishing Group
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Snippet Tumor suppressor PTEN regulates cellular activities and controls genome stability through multiple mechanisms. In this study, we report that PTEN is necessary...
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StartPage 1189
SubjectTerms 631/80/641/151
631/80/86
Animals
Biomedical and Life Sciences
C-末端
Cell Biology
Chromosomal Instability
Colorectal carcinoma
Deoxyribonucleic acid
DNA
DNA Replication
DNA复制
Genomic Instability
Life Sciences
Original
original-article
PTEN基因
Replication Protein A - genetics
压力保护
染色体不稳定性
物理相关
肿瘤抑制基因
调控
Title PTEN regulates RPA1 and protects DNA replication forks
URI http://lib.cqvip.com/qk/85240X/201511/666654354.html
https://link.springer.com/article/10.1038/cr.2015.115
https://www.ncbi.nlm.nih.gov/pubmed/26403191
https://www.proquest.com/docview/1729044247
https://www.proquest.com/docview/1730023831
https://www.proquest.com/docview/1846396549
https://pubmed.ncbi.nlm.nih.gov/PMC4650420
Volume 25
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