Rubone, a chalcone analog, is a modulator of miR-34a. Rubone upregulates miR-34a expression in a p53 dependent manner, downregulates the downstream target Bcl-2 and Cyclin D1 expression, and suppresses hepatocellular carcinoma (HCC) growth in vivo. Rubone enhances the anticancer effect of Paclitaxel (PTX; HY-B0015) in PTX-resistant prostate cancer cell lines by reversing the expression of miR-34a downstream targets[1][2][3].