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Molecular basis for the action of a dietary flavonoid revealed by the comprehensive identification of apigenin human targets
Abstract and Figures
Significance The beneficial health effects of dietary phytochemicals make them promising candidates for treatment and prevention of multiple diseases. However, cellular targets for dietary components remain largely unknown. By combining phage display with high-throughput sequencing, we identified 160 human targets of apigenin, a flavonoid abundant in fruits and vegetables. The apigenin targets include hnRNPA2, a factor associated with numerous cellular malignancies and involved in mRNA metabolism/splicing. We show that, by inhibiting hnRNPA2 dimerization, apigenin affects the alternative splicing of key mRNAs. These findings provide a perspective on how dietary phytochemicals function and what distinguishes their action from pharmaceutical drugs.
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