Effects of BCYRN1 on miR-503 on migration and invasion of lung cancer by Notch1 pathway / 中国免疫学杂志

ABSTRACT

Objective:To investigate the mechanism of BCYRN1 regulating miR-503 through Notch1 signaling pathway in the migration and invasion of lung cancer. Methods:The expression of BCYRN1 and miR-503 in different lung cancer cell lines were detected by qPCR. Immunofluorescence and qPCR were used to detect the transfection efficiency of lentivirus BCYRN1 + siRNA transfected lung cancer cells. Double luciferase reporter gene was used to detect the interaction between BCYRN1 and miR-503. Transwell invasion test and scratch test were used to detect the invasion and migration of lung cancer cells after silencing BCYRN1. Western blot was used to detect the expression of Notch1 signaling pathway silence BCYRN1. The effect of silencing BCYRN1 on lung cancer cells in nude mice was measured by subcutaneous tumor formation in nude mice. Results:The expression level of BCYRN1 was the highest in lung cancer cell H1299,and the expression level of miR-503 was relatively high. Immunofluorescence and mRNA levels demonstrated that BCYRN1 + siRNA lentivirus could be effectively transfected into H1299 cells;BCYRN19 binds specifically to the 3′-UTR of miR-503;silencing BCYRN1 could inhibit the invasion and migration of lung cancer H1299 cells;the expression of Notch1 pathway protein was down-regulated after silencing BCYRN1. Compared with NC group,tumor volume and weight of BCYRN1-siRNA group were significantly decreased. Conclusion:BCYRN1 can target the regulation of miR-503 through Notch1 signaling pathway in the invasion and migration of lung cancer H1299 cells.