The aim of the current study was to investigate the influence of downregulating high-mobility group protein A1 (HMGA1) on the tumor gene and the mechanisms underlying the antitumor of HMGA1. The efficient short/small hairpin RNAs (shRNAs) of HMGA1 were constructed and transfected into human ovarian carcinoma OVCAR cells. The changes were identified by reverse transcription PCR (RT-PCR), Western blotting, methyl thiazolyl tetrazolium, and invasion assay. The knockdown of HMGA1 expression in OVCAR cells could obviously change cell morphology, decrease cell proliferation, and reduce invasion in vitro. BALB/C nude mice injected with OVCAR cells transfected HMGA1 shRNA showed a significantly lower tumor weight and volume than those in the control group. Taken together, HMGA1 knockdown could reduce the growth and metastasis potentials of OVCAR cells.
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