miR‑199a‑3p/Sp1/LDHA axis controls aerobic glycolysis in testicular tumor cells

International Journal of Molecular Medicine
Shihua ZhouDan Li

Abstract

Aerobic glycolysis is one of the characteristics of tumor metabolism and contributes to the development of tumors. Studies have identified that microRNA (miRNA/miR) serves an important role in glucose metabolism of tumors. miR‑199a‑3p is a member of the miR‑199a family that controls the outcomes of cell survival and death processes, and previous studies have indicated that the expression of miR‑199a‑3p is low and may be an inhibitor in several cancer types, including testicular tumors. The present study discussed the role and underlying mechanism of miR‑199a‑3p in aerobic glycolysis of Ntera‑2 cells and identified its downstream factors. Firstly, miR‑199a‑3p exhibited an inhibitory effect on lactic acid production, glucose intake, and reactive oxygen species (ROS) and adenosine 5'‑triphosphate (ATP) levels in Ntera‑2 cells. Then, using bioinformatics, recombinant construction and a dual luciferase reporter gene system, transcription factor Specificity protein 1 (Sp1) was determined as the direct target of miR‑199a‑3p. Also, downregulation of Sp1 by RNA interference decreased lactic acid production, glucose intake, and ROS and ATP levels in Ntera‑2 cells. Subsequently, through a functional rescue experiment, it was identified th...Continue Reading

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Citations

May 1, 2019·International Journal of Molecular Sciences·Kaja Urbańska, Arkadiusz Orzechowski

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