Baicalein inhibits melanogenesis through activation of the ERK signaling pathway.
نویسندگان
چکیده
Baicalein is one of the major flavonoids in Scutellaria baicalensis. However, the effects of baicalein on melanogenesis are unknown. The objective of this study was to evaluate the depigmenting capacity of baicalein and to elucidate its mechanism of action. B16F10 mouse melanoma cells were used to examine the effect of baicalein on melanogenesis by measurement of melanin content and tyrosinase activity after treatment. To ascertain the baicalein activity, the effect on two protein kinases, ERK and Akt and downstream microphthalmia-associated transcription factor (MITF) were examined by Western blotting and RT-PCR. Baicalein significantly inhibited melanin synthesis in a concentration-dependent manner without cytotoxicity. Tyrosinase activity was also reduced. Baicalein decreased MITF and tyrosinase levels but did not decrease MITF mRNA. Western blotting showed that baicalein induced ERK activation. Using the specific ERK phosphorylation inhibitor, PD98059, we blocked the hypopigmentation effect, and also abrogated the baicalein-mediated activation of ERK. However, baicalein did not induce Akt activation. These results suggest that the ERK pathway is involved in the melanogenic signaling cascade, and that ERK activation by baicalein reduces melanin synthesis via MITF downregulation and is subsequent to the inhibition of tyrosinase synthesis.
منابع مشابه
Naringin enhances osteogenic differentiation through the activation of ERK signaling in human bone marrow mesenchymal stem cells
Objective(s): Naringin has been reported to regulate bone metabolism. However, its effect on osteogenesis remains unclear. The aim was to investigate the effect of naringin on osteogenic differentiation of human bone marrow mesenchymal stem cells (hBMSCs) through the activation of the ERK signaling pathway in osteogenic differentiation. Materials and Methods: Annexin V-FITC assay and MTT assay ...
متن کاملAll-trans Retinoic Acid Regulates the Balance of Treg-Th17 Cells through ERK and P38 Signaling Pathway
متن کامل
Oleoylethanolamide inhibits α-melanocyte stimulating hormone-stimulated melanogenesis via ERK, Akt and CREB signaling pathways in B16 melanoma cells
The present study aimed to examine the potential inhibitory activity of oleoylethanolamide (OEA) on α-melanocyte stimulating hormone (α-MSH)-stimulated melanogenesis and the molecular mechanism(s) involved in the process in B16 mouse melanoma cells. Our data demonstrated that OEA markedly inhibited melanin synthesis and tyrosinase activity in α-MSH-stimulated B16 cells. In addition, the express...
متن کاملThe Extracts of Astragalus membranaceus Inhibit Melanogenesis through the ERK Signaling Pathway
Melanin is a normal production protecting skin from environment-causing damage. Plants produce some agents in response to their environment. These agents could be applied in cosmetic production. Some Chinese herbals have immunomodulatory activities and modulate the symptoms of several diseases. Melanogenesis represents a complex group of conditions that are thought to be mediated through a comp...
متن کاملGomisin N Inhibits Melanogenesis through Regulating the PI3K/Akt and MAPK/ERK Signaling Pathways in Melanocytes
Gomisin N, one of the lignan compounds found in Schisandra chinensis has been shown to possess anti-oxidative, anti-tumorigenic, and anti-inflammatory activities in various studies. Here we report, for the first time, the anti-melenogenic efficacy of Gomisin N in mammalian cells as well as in zebrafish embryos. Gomisin N significantly reduced the melanin content without cellular toxicity. Altho...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- International journal of molecular medicine
دوره 25 6 شماره
صفحات -
تاریخ انتشار 2010