TGF beta 1/Smad3 counteracts BRCA1-dependent repair of DNA damage
Inactivation of the BRCA1 gene has been found to confer susceptibility to early-onset familial breast and ovarian cancers. BRCA1 regulates DNA repair, chromatin remodeling and affects gene transcription. Transforming growth factor- beta (TGF beta ) is a potent regulator of growth, apoptosis and inva...
Saved in:
Published in | Oncogene Vol. 24; no. 14; pp. 2289 - 2297 |
---|---|
Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
31.03.2005
|
Online Access | Get full text |
Cover
Loading…
Abstract | Inactivation of the BRCA1 gene has been found to confer susceptibility to early-onset familial breast and ovarian cancers. BRCA1 regulates DNA repair, chromatin remodeling and affects gene transcription. Transforming growth factor- beta (TGF beta ) is a potent regulator of growth, apoptosis and invasiveness of tumor cells, including breast cancer cells. Here we show that Smad3 which is a component of the TGF beta signaling pathway, forms a complex with BRCA1 in vitro and in vivo. The interaction is mediated by the MH1 domain of Smad3 and the C-terminal part of BRCA1. We observed a co-localization of Smad3 and BRCA1 in nuclear complexes. We also found that TGF beta 1/Smad3 counteracted BRCA1-dependent repair of DNA double-strand breaks in human breast epithelial cells, as evaluated by BRCA1 nuclear foci formation, single-cell gel electrophoresis and cell survival assays. Thus, TGF beta 1/Smad3 suppresses BRCA1-dependent DNA repair in response to a DNA damaging agent. |
---|---|
AbstractList | Inactivation of the BRCA1 gene has been found to confer susceptibility to early-onset familial breast and ovarian cancers. BRCA1 regulates DNA repair, chromatin remodeling and affects gene transcription. Transforming growth factor- beta (TGF beta ) is a potent regulator of growth, apoptosis and invasiveness of tumor cells, including breast cancer cells. Here we show that Smad3 which is a component of the TGF beta signaling pathway, forms a complex with BRCA1 in vitro and in vivo. The interaction is mediated by the MH1 domain of Smad3 and the C-terminal part of BRCA1. We observed a co-localization of Smad3 and BRCA1 in nuclear complexes. We also found that TGF beta 1/Smad3 counteracted BRCA1-dependent repair of DNA double-strand breaks in human breast epithelial cells, as evaluated by BRCA1 nuclear foci formation, single-cell gel electrophoresis and cell survival assays. Thus, TGF beta 1/Smad3 suppresses BRCA1-dependent DNA repair in response to a DNA damaging agent. |
Author | Dubrovska, A Souchelnytskyi, S Volodko, N Lomnytska, M Kanamoto, T Heldin, C-H |
Author_xml | – sequence: 1 givenname: A surname: Dubrovska fullname: Dubrovska, A – sequence: 2 givenname: T surname: Kanamoto fullname: Kanamoto, T – sequence: 3 givenname: M surname: Lomnytska fullname: Lomnytska, M – sequence: 4 givenname: C-H surname: Heldin fullname: Heldin, C-H – sequence: 5 givenname: N surname: Volodko fullname: Volodko, N – sequence: 6 givenname: S surname: Souchelnytskyi fullname: Souchelnytskyi, S |
BookMark | eNqNyjEOgjAUANAOmAjq6tzJDfhtMcCIKDo5KDup8DEQaJGW-7t4AKe3PI84SiskZM8gYCCS0PSBVnXAOCRRJBziQnoEP-WCr4lnTA8AcQrcJVl5LegLraQsfI6yEbTWi7I4y9oaenrkGfMbnFA1qCydcZLdTHVLz_eMNnKUb9ySVSsHg7ufG3IoLmV-86dZfxY0tho7U-MwSIV6MRWLE8GAxeLv-AUu_EDs |
ContentType | Journal Article |
DBID | 7TO H94 |
DOI | 10.1038/sj.onc.1208443 |
DatabaseName | Oncogenes and Growth Factors Abstracts AIDS and Cancer Research Abstracts |
DatabaseTitle | Oncogenes and Growth Factors Abstracts AIDS and Cancer Research Abstracts |
DatabaseTitleList | Oncogenes and Growth Factors Abstracts |
DeliveryMethod | fulltext_linktorsrc |
Discipline | Medicine Chemistry Biology |
EndPage | 2297 |
GroupedDBID | --- -Q- .55 0R~ 123 29N 2WC 36B 39C 3O- 3V. 4.4 406 53G 5RE 7TO 7X7 88A 88E 8AO 8C1 8FE 8FH 8FI 8FJ 8G5 8R4 8R5 AANZL AATNV AAWBL AAZLF ABAKF ABAWZ ABDBF ABJNI ABLJU ABUWG ABZZP ACAOD ACGFO ACGFS ACKTT ACMJI ACPRK ACRQY ACZOJ ADBBV ADFRT ADHDB AEJRE AEMSY AENEX AEVLU AEXYK AFBBN AFKRA AFSHS AGEZK AGHAI AGQEE AHMBA AHSBF AJRNO ALFFA ALIPV ALMA_UNASSIGNED_HOLDINGS AMYLF ASPBG AVWKF AXYYD AZFZN AZQEC B0M BBNVY BENPR BHPHI BKKNO BPHCQ BVXVI CAG CCPQU COF CS3 DIK DNIVK DPUIP DU5 DWQXO E3Z EAD EAP EBC EBD EBLON EBS EE. EIOEI EJD EMB EMK EMOBN EPL ESX F5P FDQFY FEDTE FERAY FIZPM FRP FSGXE FYUFA GNUQQ GUQSH H94 HCIFZ HMCUK HVGLF HZ~ IAO IHR INH INR ITC IWAJR JSO JZLTJ KQ8 L7B LK8 M0L M1P M2O M7P N9A NAO NQJWS NXXTH O9- OK1 OVD P2P PQQKQ PROAC PSQYO Q2X RNS RNT RNTTT SNX SNYQT SOHCF SRMVM SV3 SWTZT TAOOD TBHMF TDRGL TEORI TR2 TSG TUS UDS UKHRP W2D WH7 X7M ~8M |
ID | FETCH-proquest_miscellaneous_178310173 |
ISSN | 0950-9232 |
IngestDate | Sat Aug 17 01:47:38 EDT 2024 |
IsPeerReviewed | true |
IsScholarly | true |
Issue | 14 |
Language | English |
LinkModel | OpenURL |
MergedId | FETCHMERGED-proquest_miscellaneous_178310173 |
Notes | ObjectType-Article-2 SourceType-Scholarly Journals-1 content type line 23 ObjectType-Feature-1 |
PQID | 17831017 |
PQPubID | 23462 |
ParticipantIDs | proquest_miscellaneous_17831017 |
PublicationCentury | 2000 |
PublicationDate | 20050331 |
PublicationDateYYYYMMDD | 2005-03-31 |
PublicationDate_xml | – month: 03 year: 2005 text: 20050331 day: 31 |
PublicationDecade | 2000 |
PublicationTitle | Oncogene |
PublicationYear | 2005 |
SSID | ssj0007902 |
Score | 3.6101499 |
Snippet | Inactivation of the BRCA1 gene has been found to confer susceptibility to early-onset familial breast and ovarian cancers. BRCA1 regulates DNA repair,... |
SourceID | proquest |
SourceType | Aggregation Database |
StartPage | 2289 |
Title | TGF beta 1/Smad3 counteracts BRCA1-dependent repair of DNA damage |
URI | https://search.proquest.com/docview/17831017 |
Volume | 24 |
hasFullText | 1 |
inHoldings | 1 |
isFullTextHit | |
isPrint | |
link | http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwnZ1bT8IwFIAbgXh5MYoar9gH4wsZ0F1c9wgDJMrFICS8kY5tDxq2BIYJ_npP1w02MUF9aZZmaZt82-np6bkgdGcr6kSTdSIZrmHBAcV1Jca4Mw3jmV8M13UYjx3udB9aQ_VppI3WBe_C6JLAKk0-f4wr-Q9V6AOuPEr2D2RXg0IHPANfaIEwtL9j_NjkjlasyMXR65TZSjGs_eDw0Kd5sdY3q0SKy9wG_H6AiVuBerdatNmUpR2Bet7Eh7lWqOsLa-Z_zN9Zyub5zDwGfP2Uh3Xbn3rLIHo1YWDlV1uhLVZqpewLWhxwlzAUViRQA1MyU8Q9x9-GmpSAsigJFO2msizcbzcktcjLPn8r-SAHiVyhqkjXlE6J3e2Nm8N2ezxojAYZlJN1Q4MTdq7W6L70VxuuLlxLVwuNc3MqtJwef2O_DZWIwRE6jLR_XBUoj9GO4-XRrqgHusyjfTMuv5dHe53I6-EEVYEz5pwxKYeUcYIy_kYZC8rYdzFQxoLyKbpvNgZmS4oXNoZp-J0N8xx_MR8TnVeCI7pyhrKe7znnCBuUgNZNuOZH4XeyqU6pxRSNqQblCfsv0O2WwS63vnGFDtbfwjXKBrOFcwPaV2AVUEYf6dBSkxQiEl-mQTKx |
link.rule.ids | 315,786,790,27957,27958,31755,33302,33780 |
linkProvider | ProQuest |
openUrl | ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fsummon.serialssolutions.com&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=TGF+beta+1%2FSmad3+counteracts+BRCA1-dependent+repair+of+DNA+damage&rft.jtitle=Oncogene&rft.au=Dubrovska%2C+A&rft.au=Kanamoto%2C+T&rft.au=Lomnytska%2C+M&rft.au=Heldin%2C+C-H&rft.date=2005-03-31&rft.issn=0950-9232&rft.volume=24&rft.issue=14&rft.spage=2289&rft.epage=2297&rft_id=info:doi/10.1038%2Fsj.onc.1208443&rft.externalDBID=NO_FULL_TEXT |
thumbnail_l | http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/lc.gif&issn=0950-9232&client=summon |
thumbnail_m | http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/mc.gif&issn=0950-9232&client=summon |
thumbnail_s | http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/sc.gif&issn=0950-9232&client=summon |