Resveratrol, a natural polyphenolic compound, inhibits cholera toxin. - GreenMedInfo Summary
Resveratrol, a natural polyphenolic compound, inhibits cholera toxin-induced cyclic AMP accumulation in Vero cells.
Toxicon. 2010 Aug 1;56(1):29-35. Epub 2010 Mar 20. PMID: 20307562
Department of Molecular Infectiology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan. email@example.com
Resveratrol (3,4',5-trihydroxystilbene), a natural polyphenol found in red grapes, berries and peanuts, exhibits anti-inflammatory, cell-growth modulatory, and anticarcinogenic effects. In this report, we show that resveratrol inhibited cholera toxin (CT)-induced cyclic AMP accumulation in Vero cells. Resveratrol suppressed the CT activity by suppressing the internalization of CT and traffic to the Golgi apparatus without affecting CT binding to cells. Further, resveratrol partially precipitated CT from solution, and suppressed CT ADP-ribosyltransferase activity. These data suggest that resveratrol may inhibit CT-induced activity directly by associating with CT and suppressing its enzymatic activity, and indirectly by inhibiting CT endocytosis into cells.