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Combining Ginsenoside F1 with (-)-Epigallocatechin Gallate Synergistically Protects Human HaCaT Keratinocytes from Ultraviolet B-Induced Apoptosis  

Tae Ryong, Lee (Amore Pacific R&D Center)
Si Young, Cho (Amore Pacific R&D Center)
Eun Hee, Lee (Amore Pacific R&D Center)
Myeong Hoon, Yeom (Amore Pacific R&D Center)
Ih-Seop, Chang (Amore Pacific R&D Center)
Publication Information
Journal of the Society of Cosmetic Scientists of Korea / v.30, no.2, 2004 , pp. 253-261 More about this Journal
Abstract
Ginsenosides and green tea extracts show a variety of biomedical efficacies such as anti-aging, anti-oxidation and anti-tumor-promotion effects. (-)-Epigallocatechin-3-gallate (EGCG) has been reported to inhibit the UVB-induced apoptosis by increasing the Bcl-2-to-Bax ratio. We have previously shown that ginsenoside Fl protects human HaCaT cells from ultraviolet-B (UVB)-induced apoptosis by maintaining constant levels of Bcl-2 and Brn-3a. Here, we investigate the combined effect of ginsenoside Fl and EGCG on the protection of human HaCaT keratinocyte against UVB-induced apoptosis. When treated individually, although 5 ${\mu}$M ginsenoside Fl and 50${\mu}$M EGCG protected cells from UVB-induced apoptosis, 2${\mu}$M ginsenoside Fl or 10${\mu}$M EGCG treatment showed very little protection effect. However, cotreatement of 2${\mu}$M ginsenoside Fl and 10${\mu}$M EGCG successfully protected HaCaT cells from UVB-induced cell death. As expected, combining ginsenoside Fl and EGCG efficiently prevented UVB-induced decrease of Bcl-2 and Brn-3a expression. In addition, cotreatment with ginsenoside F1 and EGCG prevented the dephosphorylation of Rb, whereas individual treatment with ginsenoside Fl or EGCG failed to prevent the dephosphorylation of Rb even at high concentrations.
Keywords
ginsenoside Fl; Bcl-2; EGCG; Rb; Brn-3a;
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