Abstract Title:

Resveratrol arrests the cell division cycle at S/G2 phase transition.

Abstract Source:

Biochem Biophys Res Commun. 1998 Sep 8;250(1):53-8. PMID: 9735330

Abstract Author(s):

F D Ragione, V Cucciolla, A Borriello, V D Pietra, L Racioppi, G Soldati, C Manna, P Galletti, V Zappia

Article Affiliation:

Medical School, Second University of Naples, Naples, Italy. dellarag@cds.unina.it


Resveratrol (3,5,4'-trihydroxystilbene) is a naturally occurring phytoalexin, found in grapes and wine, which has been reported to exert a variety of important pharmacological effects. We have investigated the activity of resveratrol on proliferation and differentiation of the promyelocitic cell line HL-60. A concentration as low as 30 microM causes a complete arrest of proliferation and a rapid induction of differentiation towards a myelo-monocytic phenotype. Analyses by flow cytometry showed the absence of the G2/M peak and the accumulation of cells in G1 and S phases. Moreover, at the concentrations employed, a very low amount of apoptotic cells was evidenced. A detailed biochemical analysis demonstrated that the G1 phase of the cell division cycle engine was completely unmodified by resveratrol addition, thus indicating that the G1 -->S transition occurs normally. Conversely, after only 24 h treatment, a significant increase of cyclins A and E could be observed along with the accumulation of cdc2 in the inactive phosphorylated form. These data demonstrate that resveratrol causes a complete and reversible cell cycle arrest at the S phase checkpoint.

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