Abstract
We have analysed the relationship of the products of two genes, neu and BRCA1, known to be important in human breast cancer. Highly specific antibodies that recognized both the rodent and human form of the BRCA1 gene product (Mr 215 kDa, p215BRCA1) were developed to facilitate these efforts. p215BRCA1 was identified as a tyrosine phosphorylated protein primarily localized in the nucleus of several breast cancer cell lines. In transformed murine and human cells, levels of p215BRCA1 tyrosine phosphorylation were inversely correlated with the activity of the erbB family receptor-tyrosine-kinases and with the transformed growth features of these cells. Regulation of p215BRCA1 tyrosine phosphorylation was also related to events in the cell cycle. Increased levels of p215BRCA1 phosphotyrosine content were observed in NIH3T3 cells arrested at the G2/M transition. These findings indicate that the products of BRCA1, neu, and erbB breast cancer genes participate in a common or shared signaling pathway important in cell growth and its regulation.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 50 print issues and online access
$259.00 per year
only $5.18 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Zhang, HT., Zhang, X., Zhao, HZ. et al. Relationship of p215BRCA1 to tyrosine kinase signaling pathways and the cell cycle in normal and transformed cells. Oncogene 14, 2863–2869 (1997). https://doi.org/10.1038/sj.onc.1201140
Received:
Revised:
Accepted:
Issue Date:
DOI: https://doi.org/10.1038/sj.onc.1201140
Keywords
This article is cited by
-
BRCA1 and EGFR as prognostic biomarkers in triple negative metastatic breast cancer patients treated with cisplatin plus docetaxel
The Chinese-German Journal of Clinical Oncology (2010)
-
Adenosine nucleotide modulates the physical interaction between hMSH2 and BRCA1
Oncogene (2001)
-
BRCA1 and cell signaling
Oncogene (2000)