Inhibition of mRNA processing, including splicing in the nucleus, is a potential anti-cancer candidate. To obtain mRNA processing inhibitors, we have screened for active constituents from spices. Ginger, clove, and cinnamon showed an inhibitory effect on mRNA processing in the nucleus. Two components in ginger, 6-gingerol and 6-shogaol, exhibited the inhibition of mRNA processing.
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