Increased miR-21a provides metabolic advantages through suppression of FBP1 expression in non-small cell lung cancer cells.
Year: 2017
Type: article
Abstract: Lung cancer is the most common solid tumor and the leading cause of cancer-related mortality worldwide. miR-21 is one of the most commonly observed aberrant miRNAs in human cancers. However, the biological roles of miR-21 in glucose metabolism of non-small cell lung cancer (NSCLC) cells remain unknown. In the present study, our findings demonstrated that miR-21 promoted glucose uptake and increased TXNIP expression. miR-21 increased lactate generation and decreased oxygen consumption in NSCLC cells. Moreover, we found that miR-21 promoted glycolysis and decreased OXPHOS. Mechanistically, fructose-1,6-biphosphatase (FBP1) was a direct target of miR-21 and observed a negative correlation between miR-21 and FBP1 in NSCLC samples. Restoring FBP1 expression reversed the effects induced by miR-21 overexpression in NSCLC cells. Together, our findings suggest the critical role of miR-21 in glucose metabolism through suppression of FBP1 in NSCLC cells. miR-21 may be a potential target of NSCLC treatment.
Source: Europe PMC (PubMed Central)
Authors: Qingchun Dai, Na Li, Xiaohong Zhou
Language: English
Subfield: Cancer Research
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W2921030726