Title : The anti-diabetic drug metformin suppresses self-renewal and proliferation of trastuzumab-resistant tumor-initiating breast cancer stem cells.

Pub. Date : 2011 Apr

PMID : 20458531






4 Functional Relationships(s)
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1 We here demonstrate that the anti-diabetic drug metformin interacts synergistically with the anti-HER2 monoclonal antibody trastuzumab (Tzb; Herceptin ) to eliminate stem/progenitor cell populations in HER2-gene-amplified breast carcinoma cells. Metformin erb-b2 receptor tyrosine kinase 2 Homo sapiens
2 We here demonstrate that the anti-diabetic drug metformin interacts synergistically with the anti-HER2 monoclonal antibody trastuzumab (Tzb; Herceptin ) to eliminate stem/progenitor cell populations in HER2-gene-amplified breast carcinoma cells. Metformin erb-b2 receptor tyrosine kinase 2 Homo sapiens
3 When using the mammosphere culture technique, graded concentrations of single-agent metformin (range 50-1,000 mumol/l) were found to dose-dependently reduce the number of mammospheres formed by SKBR3 (a Tzb-naive model), SKBR3 TzbR (a model of acquired auto-resistance to Tzb) and JIMT-1 (a model of refractoriness to Tzb and other HER2-targeted therapies ab initio) HER2-overexpressing breast cancer cells. Metformin erb-b2 receptor tyrosine kinase 2 Homo sapiens
4 When using the mammosphere culture technique, graded concentrations of single-agent metformin (range 50-1,000 mumol/l) were found to dose-dependently reduce the number of mammospheres formed by SKBR3 (a Tzb-naive model), SKBR3 TzbR (a model of acquired auto-resistance to Tzb) and JIMT-1 (a model of refractoriness to Tzb and other HER2-targeted therapies ab initio) HER2-overexpressing breast cancer cells. Metformin erb-b2 receptor tyrosine kinase 2 Homo sapiens