A novel metformin derivative, HL010183, inhibits proliferation and invasion of triple-negative breast cancer cells
2013
Koh, Minsoo | Lee, Jong-Cheol | Min, Changhee | Moon, Aree
Mounting evidence suggests that metformin (N,N-dimethylbiguanide), a widely prescribed drug for the treatment of type II diabetes, exerts an anti-tumor effect on several cancers including breast cancer. Breast cancer has been estimated as one of the most commonly diagnosed types of cancer among women. In particular, triple-negative breast cancers are associated with poor prognosis and metastatic growth. In the present study, we synthesized a novel metformin derivative 5 (HL010183) and metformin salts, 9a, 9b, and 9c (metformin gamma-aminobutyric acid (GABA) salt, metformin pregabalin salt and metformin gabapentin salt), which exerted more potent inhibitory effects on the proliferation and invasiveness of Hs578T triple-negative breast carcinoma cells than metformin. Importantly, 5 showed approximately 100-fold more potent effects compared to metformin. In a triple-negative breast cancer xenograft model, 5 showed a comparable degree of inhibitory effect on in vivo tumor growth at the 100mg/kg dose to that of metformin at 500mg/kg. Our results clearly demonstrate that 5 exerts a potent anti-tumor effect both in vitro and in vivo, paving the way for a strategy for treatment of triple-negative breast cancer.
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