Inhibition of collagenase and melanogenesis by ethanol extracts of Orostachys japonicus A. Berger： possible involvement of Erk and Akt signaling pathways in melanoma cells

• Published in: Acta biochimica et biophysica Sinica Vol. 49; no. 10; pp. 945 - 953
• Main Authors: Im, Dai Sig, Lee, Jong-Min, Lee, Jongsung, Shin, Hye Jin, No, Kyoung Tai, Park, See-Hyoung, Kim, Kiyoung
• Format: Journal Article
• Language: English
• Published: China 01.10.2017
• Subjects: Akt; Animals; Cell Line, Tumor; China; Collagenases - metabolism; Crassulaceae - chemistry; ERK; Ethanol - chemistry; Extracellular Signal-Regulated MAP Kinases - metabolism; Melanins - antagonists & inhibitors; Melanins - biosynthesis; Melanoma, Experimental - metabolism; Melanoma, Experimental - pathology; Mice; Monophenol Monooxygenase - antagonists & inhibitors; Monophenol Monooxygenase - metabolism; Pancreatic Elastase - antagonists & inhibitors; Pancreatic Elastase - metabolism; Plant Extracts - chemistry; Plant Extracts - pharmacology; Proto-Oncogene Proteins c-akt - metabolism; RAW 264.7 Cells; Republic of Korea; Signal Transduction - drug effects; 乙醇提取物; 信号通路; 刺参; 细胞; 胶原酶; 黑色素瘤; elastase; collagenase; antioxidant; 2,2-diphenyl-1-picrylhydrazyl; melanogenesis; Orostachys japonicus A. Berger; Akt; tyrosinase; Erk
• ISSN: 1672-9145; 1745-7270
• DOI: 10.1093/abbs/gmx090

Orostachys japonicus is an herb that contains several functional components and has traditionally been used to treat various diseases in Asia. In this study, bioactive components from different parts of the O. japonicus plant were investigated, and the contents of the functional components in ethanol extracts of O. japonicus cultivated in Korea and China were compared. The antioxidant effects of O. japonicus ethanol extracts were investigated using Raw 264.7 cells. It was found that 2,2-diphenyl-l-picrylhydrazyl radical-scavenging activity was significantly decreased in the cells treated with the extracts. Moreover, the novel inhibitory functions of O. japonicus extracts on col- lagenase, elastase, and tyrosinase were established. We also found that O. japonicus extracts strongly inhibited melanin synthesis in B16F10 melanoma cells by decreasing MITF protein levels and activating the Erk and Akt signaling pathways. Thus, these findings would be useful for devel- oping new cosmetic and pharmaceutical formulations based on O. japonicus extracts.