Abstract：
:Metformin, a commonly used agent in the treatment of type 2 diabetes, is also associated with reduced risk of cancer development and improvement in cancer survival. Although much is known about metformin, the mechanisms behind its anti-cancer properties are not fully understood. In this study we addressed the role of a mitochondrial transporter commonly upregulated in cancer cells, SLC25A10, for cell survival and metabolism in the presence of metformin. SLC25A10 is a carrier in the mitochondrial inner membrane that transports malate and succinate out of the mitochondria, in exchange of phosphate and sulfate. We show that metformin treatment results in decreased gene expression of the SLC25A10 carrier both in lung cancer A549 mock cells and A549 SLC25A10 knockdown (siSLC25A10) cells. The decrease was even more pronounced when cells were grown at low glucose concentrations. The expression levels of key enzymes in glucose metabolism showed slightly altered mean values for all genes tested in both control cells and siSLC25A10 cells upon metformin treatment. The gene expression of the metabolic regulator glutamic-oxaloacetic transaminase 1 decreased in wild type cells upon metformin treatment whereas there was a trend of increased expression in the siSLC25A10 cells upon metformin treatment. In addition, the gene expression of the cyclin-dependent kinase inhibitor 1A was markedly increased in the siSLC25A10 compared to control A549 cells, and with even larger increases in the presence of metformin and at low glucose concentration. Our data show that in siSLC25A10 cell lines, metformin significantly alters the SLC25A10 carrier at both mRNA and protein levels and can thereby affect the supply of nutrients and the metabolic state of cancer cells.
journal_name
Biochem Pharmacoljournal_title
Biochemical pharmacologyauthors
Zhao Q,Zhou X,Curbo S,Karlsson Adoi
10.1016/j.bcp.2018.09.015subject
Has Abstractpub_date
2018-10-01 00:00:00pages
444-450eissn
0006-2952issn
1873-2968pii
S0006-2952(18)30397-6journal_volume
156pub_type
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journal_title：Biochemical pharmacology
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journal_title：Biochemical pharmacology
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pub_type： 杂志文章
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
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pub_type： 杂志文章
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更新日期：1989-08-01 00:00:00
