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- W2773697958 endingPage "e0187191" @default.
- W2773697958 startingPage "e0187191" @default.
- W2773697958 abstract "Multiple drug resistant (MDR) malignancy remains a predictable and often terminal event in cancer therapy, and affects individuals with many cancer types, regardless of the stage at which they were originally diagnosed or the interval from last treatment. Protein biomarkers of MDR are not globally used for clinical decision-making, but include the overexpression of drug-efflux pumps (ABC transporter family) such as MDR-1 and BCRP, as well as HIF1α, a stress responsive transcription factor found elevated within many MDR tumors. Here, we present the important in vitro discovery that the development of MDR (in breast cancer cells) can be prevented, and that established MDR could be resensitized to therapy, by adjunct treatment with metformin. Metformin is prescribed globally to improve insulin sensitivity, including in those individuals with Type 2 Diabetes Mellitus (DM2). We demonstrate the effectiveness of metformin in resensitizing MDR breast cancer cell lines to their original treatment, and provide evidence that metformin may function through a mechanism involving post-translational histone modifications via an indirect histone deacetylase inhibitor (HDACi) activity. We find that metformin, at low physiological concentrations, reduces the expression of multiple classic protein markers of MDR in vitro and in preliminary in vivo models. Our demonstration that metformin can prevent MDR development and resensitize MDR cells to chemotherapy in vitro, provides important medical relevance towards metformin’s potential clinical use against MDR cancers." @default.
- W2773697958 created "2017-12-22" @default.
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- W2773697958 date "2017-12-06" @default.
- W2773697958 modified "2023-10-16" @default.
- W2773697958 title "Metformin inhibits the development, and promotes the resensitization, of treatment-resistant breast cancer" @default.
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- W2773697958 doi "https://doi.org/10.1371/journal.pone.0187191" @default.
- W2773697958 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5718420" @default.
- W2773697958 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/29211738" @default.
- W2773697958 hasPublicationYear "2017" @default.
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