Abstract
Prostate cancer is the most prevalent cancer in males, and usually, death occurs due to bone metastasis. TGFβ has been shown to play an essential role in the metastasis of prostate cancer cells by promoting epithelial-to-mesenchymal transition (EMT). Hesperetin is known to possess anti-microbial, anti-fungal, antioxidant, and anti-cancer properties and good bioavailability. Therefore, this study investigated the effect of hesperetin on TGFβ-induced cell proliferation and EMT in prostate cancer cells (PC3). Interestingly, we found that hesperetin can significantly inhibit the cell proliferation of PC3 cells and arrest the cells in the S and G2M phases of the cell cycle. The invasion and migration assay results decipher the inhibitory effect of hesperetin on TGFβ-induced invasion and migration of prostate cancer cells. Our results confirmed that hesperetin also acts through the canonical signaling pathway, as we observed a significant decrease in the expression of pSmad3. Hesperetin can inhibit the TGFβ induced EMT by increasing E-cadherin expression and decreasing N-cadherin expression. Hesperetin could modulate the TGFβ induced histone methylation marks. Further investigation is required to understand the role of hesperetin in modulating these marks and thus inhibiting TGFβ-induced EMT. Hence, the results of our study identified the potential of hesperetin to modulate TGFβ-induced cell proliferation and invasion and migration of prostate cancer cells which may help inhibit the metastatic growth of prostate cancer cells.
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