Effect of the natural compound trans- resveratrol on human MCM4 gene transcription.
trans‑Resveratrol (Rsv) is a natural compound contained in red wine and grape skins that has various beneficial effects for organisms such as lengthening of their life span. Rsv induces expression of the human TP53 and HELB genes, which are involved in the regulation of DNA maintenance. In the present study, a luciferase expression vector containing 309 bp of the 5′ upstream end of the human MCM4 gene was transfected into HeLa S3 cells. A luciferase assay revealed that Rsv treatment increased the minichromosome maintenance 4 (MCM4) gene promoter activity by GC‑box and GGAA (TTCC) motifs. Electro phoretic mobility shift assay revealed that the specific binding factor (complex) contains PU.1 (SPI1). Quantitative reverse transcription‑polymerase chain reaction analysis indicated that MCM4 gene expression was transiently induced by Rsv. Moreover, western blotting revealed that the SP1/PU.1 ratio markedly increased after Rsv treatment, indicating that a balance or profile of these transcription factors may control Rsv‑inducible initiation of transcription. These observations indicated that the beneficial effects of Rsv can be attributed to induction of the chromosomal DNA maintenance factor encoding gene expression.
El trans-resveratrol es un compuesto polifenólico, relacionado con un efecto protector en la salud, que puede encontrarse en el vino y en las uvas. Hay evidencia científica que lo relaciona con una mayor esperanza de vida.
Este estudio aporta evidencia sobre la capacidad del resveratrol para regular la expresión de genes humanos que participan en el correcto mantenimiento del ADN.