Bioorganic and Medicinal Chemistry (2020)
Update date:2022-08-11
Topics:
Chang, Qi
Long, Jing
Hu, Liqing
Chen, Zhuo
Li, Qianbin
Hu, Gaoyun
Malignant melanoma (MM) presents as the highest morbidity and mortality type in skin cancer. Herein, inspired by the previously reported anti-melanoma effect of propranolol, a widely applied β adrenergic receptor antagonist as cardiovascular drug, we set out to exploit its potential as anti-melanoma therapy based on the drug repurposing strategy. Structural optimization of propranolol yielded 5m, which exhibits dramatically improved potency on human melanoma cell growth (1.98–3.70 μM), compared to propranolol (59.5–75.8 μM). Further investigation demonstrated that 5m could inhibit colony formation of melanoma cell line (completely abolished at 2 μM for 5m, partially inhibited at 50 μM for propranolol), induce cell apoptosis and cell cycle arrest in the G2/M phase (both observed at 1 μM). Preliminary mechanism study indicated that 5m could disrupt the cellular microtubule network, which suggested tubulin as a potential target. Docking study provided a structural insight into the interaction between 5m and tubulin. In summary, our study presents a drug repurposing case that redirects a cardiovascular agent to an anti-melanoma agent.
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