Inhibition of YBX1 by miR-216a Suppresses Proliferation andInvasion of Diffuse Large B-Cell Lymphoma

Abstract

Background: MicroRNAs (miRNAs) could be implicated in tumori genesis of diffuse large B-cell lymphoma (DLBCL). Aims: To determine the role of MiR-216a in DLBCL. Study Design: Cell culture study. Methods: Expression of miR-216a in DLBCL cells was examined byqRT-PCR. Cell counting kit-8, bromodeoxyuridine staining and tran swell assays were performed to evaluate role of miR-216a on DLBCLcell growth. Target gene of miR-216a was verified by luciferasereporter assay. Results: MiR-216a was dramatically reduced in DLBCL cells com pared to the normal B-cell line (P < .01). MiR-216a reduced theviability and retarded DLBCL cell proliferation. The invasion ofDLBCL was suppressed by miR-216a. Y box binding protein 1 (YBX1)was validated as a target of miR-216a. Its expression was reduced bymiR-216a mimic and enhanced by miR-216a inhibitor in DB andSU-DHL-10 cells. Knockdown of YBX1 reduced cell viability, prolif eration, and invasion of DB and SU-DHL-10 cells. Conclusion: MiR-216a exerted tumor-suppressive effects on DLBCLcells through inhibition of YBX1, providing a new strategy forDLBCL.