LncRNA-KAT7 Negatively Regulates miR-10a Through an Epigenetic Pathway to Participate in Nonsmall Cell Lung Cancer

LncRNA-KAT7 is a recently identified tumor suppressor in colorectal cancer, whereas its roles in other malignancies remain unclear. This study aimed to investigate the roles of KAT7 in nonsmall cell lung cancer (NSCLC). The results showed that KAT7 was downregulated in NSCLC and predicted poor survival. KAT7 negatively correlated with miR-10a in NSCLC. In NSCLC cells, overexpression of KAT7 led to downregulated miR-10a, whereas silencing of KAT7 led to upregulated miR-10a. Methylation-specific polymerase chain reaction revealed that KAT7 positively regulated the methylation of miR-10a. Cell proliferation assay showed that overexpression of miR-10a led to increased proliferation rate of NSCLC cells. In addition, overexpression of KAT7 played an opposite role and reduced the effects of the overexpression of miR-10a. In conclusion, KAT7 negatively regulates miR-10a through epigenetic mechanisms to participate in NSCLC cell proliferation.