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Molecules 2014, 19(9), 12940-12948; doi:10.3390/molecules190912940

Effect of Chlorogenic Acid on Melanogenesis of B16 Melanoma Cells

1
The Key Laboratory of Plant Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, China
2
State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, China
3
University of Chinese Academy of Sciences, Beijing 1008611, China
*
Author to whom correspondence should be addressed.
Received: 17 July 2014 / Revised: 11 August 2014 / Accepted: 18 August 2014 / Published: 25 August 2014
(This article belongs to the Special Issue Cinnamic Acids Hybrids with Biological Interest)
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Abstract

Chlorogenic acid (CGA), the ester formed between caffeic acid and l-quinic acid, is a widespread phenolic compound. It is part of the human diet, found in foods such as coffee, apples, pears, etc. CGA is also was widely used in cosmetics, but the effects of CGA on melanogenesis are unknown. In this study, we analyzed the effects of CGA on cell proliferation, melanin content and tyrosinase of B16 murine melanoma cells. Additionally, the enzymatic reactions of CGA in B16 melanoma cells lytic solution were detected by UV spectrophotometry. Results showed CGA at 30 and 60 μM significantly suppresses cell proliferation. 8-MOP at 100 μM significantly promotes cell proliferation, but CGA can counter this. Incubated for 24 h, CGA (500 μM) improves melanogenesis while suppressing tyrosinase activity in B16 melanoma cells or 8-methoxypsoralen (8-MOP) co-incubated B16 melanoma cells. After 12 h, B16 melanoma cell treatment with CGA leads to an increase in melanin accumulation, however, after 48 h there is a decrease in melanin production which correlates broadly with a decrease in tyrosinase activity. CGA incubated with lytic solution 24 h turned brown at 37 °C. The formation of new products (with a maximum absorption at 295 nm) is associated with reduction of CGA (maximum absorption at 326 nm). Therefore, CGA has its two sidesroles in melanogenesis of B16 melanoma cells. CGA is a likely a substrate of melanin, but the metabolic product(s) of CGA may suppress melanogenesis in B16 melanoma cells by inhibiting tyrosinase activity. View Full-Text
Keywords: chlorogenic acid; melanogenesis; tyrosinase; cell lytic solution; browning reaction chlorogenic acid; melanogenesis; tyrosinase; cell lytic solution; browning reaction
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Li, H.-R.; Habasi, M.; Xie, L.-Z.; Aisa, H.A. Effect of Chlorogenic Acid on Melanogenesis of B16 Melanoma Cells. Molecules 2014, 19, 12940-12948.

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