Novel long non-coding RNA CYB561-5 promotes aerobic glycolysis and tumorigenesis by interacting with basigin in non-small cell lung cancer

Abstract

Abnormally expressed long non-coding RNAs (lncRNAs) have been recognized as potential diagnostic biomarkers or therapeutic targets in non-small cell lung cancer (NSCLC). The role of the novel lnc-CYB561-5 in NSCLC and its specific biological activity remain unknown. In this study, lncRNAs highly expressed in NSCLC tissue samples compared with paired adjacent normal tissue samples and atypical adenomatous hyperplasia were identified by RNA-seq analysis. Lnc-CYB561-5 is highly expressed in human NSCLC and is associated with a poor prognosis in lung adenocarcinoma. In vivo, downregulation of lnc-CYB561-5 significantly decreases tumour growth and metastasis. In vitro, lnc-CYB561-5 knockdown treatment inhibits cell migration, invasion and proliferation ability, as well as glycolysis rates. In addition, RNA pulldown and RNA immunoprecipitation (RIP) assays show that basigin (Bsg) protein interacts with lnc-CYB561-5. Overall, this study demonstrates that lnc-CYB561-5 is an oncogene in NSCLC, which is involved in the regulation of cell proliferation and metastasis. Lnc-CYB561-5 interacts with Bsg to promote the expression of Hk2 and Pfk1 and further lead to metabolic reprogramming of NSCLC cells.

Keywords: long non-coding RNA; metabolism; metastasis; non-small cell lung cancer.