Abstract
Cancer resistance to anti-tumour agents has been one of the serious challenges in different types of cancer treatment. Usually, an increase in the cell death markers can predict a higher rate of survival among patients diagnosed with cancer. By increasing the regulation of survival genes, cancer cells can display a higher resistance to therapy through the suppression of anti-tumour immunity and inhibition of cell death signalling pathways. Administration of certain adjuvants may be useful in order to increase the therapeutic efficiency of anti-cancer therapy through the stimulation of different cell death pathways. Several studies have demonstrated that metformin, an antidiabetic drug with anti-cancer properties, amplifies cell death mechanisms, especially apoptosis in a broad-spectrum of cancer cells. Stimulation of the immune system by metformin has been shown to play a key role in the induction of cell death. It seems that the induction or suppression of different cell death mechanisms has a pivotal role in either sensitization or resistance of cancer cells to therapy. This review explains the cellular and molecular mechanisms of cell death following anticancer therapy. Then, we discuss the modulatory roles of metformin on different cancer cell death pathways including apoptosis, mitotic catastrophe, senescence, autophagy, ferroptosis and pyroptosis.
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Acknowledgements
This work was supported by the National Science Foundation of China (82174466 to WXY), six “1” Project of Jiangsu Province (LGY2016012 to WXY), Social Development Project of Jiangsu Province (BE2019768 to WXY). The funding institutions did not have any roles in the study design, data collection, or analysis.
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XW, WX, XH, GW, GL, and YZ were involved in the preparing first draft. GL and MN edited the manuscript for scientific contents and language.
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Wu, Xy., Xu, WW., Huan, Xk. et al. Mechanisms of cancer cell killing by metformin: a review on different cell death pathways. Mol Cell Biochem 478, 197–214 (2023). https://doi.org/10.1007/s11010-022-04502-4
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DOI: https://doi.org/10.1007/s11010-022-04502-4