Title : Potent anti-proliferative effects of metformin on trastuzumab-resistant breast cancer cells via inhibition of erbB2/IGF-1 receptor interactions.

Pub. Date : 2011 Sep 1

PMID : 21862872






6 Functional Relationships(s)
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1 Potent anti-proliferative effects of metformin on trastuzumab-resistant breast cancer cells via inhibition of erbB2/IGF-1 receptor interactions. Metformin erb-b2 receptor tyrosine kinase 2 Homo sapiens
2 We have shown that erbB2 altered breast cancer cells are less sensitive to the anti-proliferative effects of metformin than triple negative cells, and have described the differences of molecular mechanisms of metformin action by tumor subtypes. Metformin erb-b2 receptor tyrosine kinase 2 Homo sapiens
3 We have shown that erbB2 altered breast cancer cells are less sensitive to the anti-proliferative effects of metformin than triple negative cells, and have described the differences of molecular mechanisms of metformin action by tumor subtypes. Metformin erb-b2 receptor tyrosine kinase 2 Homo sapiens
4 We hypothesized that metformin may be more effective against trastuzumab-resistant erbB2-overexpressing breast cancer cells because it targets the critical signaling pathways that are altered with resistance. Metformin erb-b2 receptor tyrosine kinase 2 Homo sapiens
5 Metformin disrupts erbB2/IGF-1R complexes, erbB3 and IGF-1R expression and activity, as well as Src kinase and/or PI-3K/Akt signaling. Metformin erb-b2 receptor tyrosine kinase 2 Homo sapiens
6 Our findings provide a rationale to study the effects of metformin on patients with erbB2 positive tumors treated with trastuzumab, with or without resistance. Metformin erb-b2 receptor tyrosine kinase 2 Homo sapiens