Rad51 supports triple negative breast cancer metastasis

Wiegmans, Adrian P., Al-Ejeh, Fares, Chee, Nicole, Yap, Pei-Yi, Gorski, Julia J., Da Silva, Leonard, Bolderson, Emma, Chenevix-Trench, Georgia, Anderson, Robin, Simpson, Peter T., Lakhani, Sunil R., & Khanna, Kum Kum (2014) Rad51 supports triple negative breast cancer metastasis. Oncotarget, 5(10), pp. 3261-3272.

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Abstract

In contrast to extensive studies on familial breast cancer, it is currently unclear whether defects in DNA double strand break (DSB) repair genes play a role in sporadic breast cancer development and progression. We performed analysis of immunohistochemistry in an independent cohort of 235 were sporadic breast tumours. This analysis suggested that RAD51 expression is increased during breast cancer progression and metastasis and an oncogenic role for RAD51 when deregulated. Subsequent knockdown of RAD51 repressed cancer cell migration in vitro and reduced primary tumor growth in a syngeneic mouse model in vivo. Loss of RAD51 also inhibited associated metastasis not only in syngeneic mice but human xenografts and changed the metastatic gene expression profile of cancer cells, consistent with inhibition of distant metastasis. This demonstrates for the first time a new function of RAD51 that may underlie the proclivity of patients with RAD51 overexpression to develop distant metastasis. RAD51 is a potential biomarker and attractive drug target for metastatic triple negative breast cancer, with the capability to extend the survival of patients, which is less than 6 months.

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5 citations in Scopus
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8 citations in Web of Science®

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ID Code: 73914
Item Type: Journal Article
Refereed: Yes
Additional URLs:
Keywords: Cancer, Rad51, Breast cancer, metastasis
ISSN: 1949-2553
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > ONCOLOGY AND CARCINOGENESIS (111200) > Cancer Cell Biology (111201)
Divisions: Current > Schools > School of Biomedical Sciences
Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Copyright Owner: Copyright 2014 The authors
Copyright Statement: This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Deposited On: 14 Jul 2014 23:01
Last Modified: 16 Jul 2014 06:38

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