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Effects of Chlorophyll a on UVB-induced Cellular Responses and Type I pN Collagen Synthesis in vitro  

Jeon, Hee-Young (Amorepacific Corporation R&D center)
Kim, Jeong-Kee (Amorepacific Corporation R&D center)
Seo, Dae-Bang (Amorepacific Corporation R&D center)
Lee, Sang-Jun (Amorepacific Corporation R&D center)
Publication Information
Korean Journal of Food Science and Technology / v.41, no.6, 2009 , pp. 700-705 More about this Journal
Abstract
Several studies have demonstrated that chlorophyll has many beneficial properties, including anti-inflammatory, anti-tumor, and antioxidant properties. Chlorophyll has been also shown to have an excellent chemopreventive potential against skin tumor. Its preventive mechanism against skin tumor, however, has not been examined in detail. Furthermore, the effects of chlorophyll on UVB-induced cellular responses have not been investigated. Solar UV radiation, in particular its UVB component, is the primary cause of many adverse biological effects, which is responsible for the photoaging and skin cancer. We investigated the preventive effects of chlorophyll a on UVB-mediated responses in human immortalized HaCaT kerationocytes and normal human fibroblast. We found that treatment of chlorophyll a markedly inhibited UVB-induced generation of reactive oxygen species and lipid peroxidation. Chlorophyll a also prevented UVB-induced MMP-1 expression and MMP-2 activation and increased Type I pN collagen synthesis. These results suggest that chlorophyll a is a potent candidate for the prevention and treatment of UVB-induced skin cancer and photoaging.
Keywords
chlorophyll a; UVB; oxidative stress; MMPs; collagen synthesis;
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