Proteomic Analysis of Pathways Involved in Estrogen-Induced Growth and Apoptosis of Breast Cancer Cells
Author Information
Author(s): Hu Zhang-Zhi, Kagan Benjamin L., Ariazi Eric A., Rosenthal Dean S., Zhang Lihua, Li Jordan V., Huang Hongzhan, Wu Cathy, Jordan V. Craig, Riegel Anna T., Wellstein Anton
Primary Institution: Lombardi Cancer Center, Georgetown University, Washington, D.C., United States of America
Hypothesis
What signaling networks are triggered by estradiol in breast cancer cells that undergo apoptosis versus those that proliferate?
Conclusion
Estrogen induces distinct growth or apoptotic responses in breast cancer cells through specific signaling pathways.
Supporting Evidence
- Estrogen is a known growth promoter for estrogen receptor-positive breast cancer cells.
- Re-introduction of estrogen can induce apoptosis in breast cancer cells that have been deprived of it.
- AIB1 is required for both estrogen-induced cell survival and apoptosis in different breast cancer cell lines.
- Proteomic analysis identified 26 proteins involved in signaling pathways related to estrogen responses.
Takeaway
Estrogen can make some breast cancer cells grow, but in others, it can cause them to die. This study looks at how that happens.
Methodology
The study used proteomics and bioinformatics to analyze protein interactions and signaling pathways in breast cancer cell lines treated with estradiol.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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