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RRD-251 is an inhibitor of retinoblastoma tumor suppressor protein (Rb)-Raf-1 interaction, with potent anti-proliferative, anti-angiogenic and anti-tumor activities[1].

RRD-251 (10-50 μM; 24 hours) inhibits melanoma growth in-vitro[1].RRD-251 (50 μM; 2 hours) inhibits Rb-Raf-1 interaction and Rb phosphorylation in non-small cell lung cancer cells[1]. RRD-251 induces apoptosis (50 μM; 18 hours) and cell cycle arrest (20-50 μM; 4 hours)[1].RRD-251 alters the expression of cell cycle and apoptosis regulatory protein[1].

RRD-251 (50 mg/kg; i.p.; q.o.d; for 14 days) has anti-cancer activities in vivo on melanomas[1].

[1]. Sandeep Singh, et al. Rb-Raf-1 interaction disruptor RRD-251 induces apoptosis in metastatic melanoma cells and synergizes with dacarbazine. Mol Cancer Ther. 2010 Dec; 9(12): 3330-3341.

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