LncRNA ABHD11‐AS1 promotes the development of endometrial carcinoma by targeting cyclin D1

To investigate the expression, role and mechanism of action of long non‐coding RNA (lncRNA) ABHD11‐AS1 in endometrial carcinoma. The expression of lncRNA ABHD11‐AS1 was quantified by qRT‐PCR in human endometrial carcinoma (n = 89) and normal endometrial tissues (n = 27). LncRNA ABHD11‐AS1 was stably overexpressed or knocked‐down in endometrial carcinoma cell lines to examine the cellular phenotype and expression of related molecules. Compared to normal endometrial tissue, lncRNA ABHD11‐AS1 was significantly overexpressed in endometrial carcinoma. Overexpression of lncRNA ABHD11‐AS1 promoted the proliferation, G1‐S progression, invasion and migration of endometrial cancer cells; inhibited apoptosis; up‐regulated cyclin D1, CDK1, CDK2, CDK4, Bcl‐xl and VEGFA; and down‐regulated p16, while ABHD11‐AS1 down‐regulation has the opposite effect. RNA pull down demonstrated that lncRNA ABHD11‐AS1 binds directly to cyclin D1. Knockdown of cyclin D1 can reverse the effect of ABHD11‐AS1. Overexpression of lncRNA ABHD11‐AS1 increased the tumorigenicity and up‐regulated cyclin D1 in an in vivo model of endometrial cancer in nude mice. LncRNA ABHD11‐AS1 functions as an oncogene to promote cell proliferation and invasion in endometrial carcinoma by positively targeting cyclin D1.