Article: Natural Citrus flavanone 5-demethylnobiletin stimulates melanogenesis through the activation of cAMP/CREB pathway in B16F10 cells
Phytomedicine. 2022 Apr., v. 98
2022
Abstract: 5-demethylnobiletin is a natural polymethoxyflavone which is isolated from the extract of citrus fruits peels. It exhibits a broad spectrum of biological activities such as anti-cancer, anti-inflammatory, cardiovascular protective and neuroprotective ... ...
Abstract | 5-demethylnobiletin is a natural polymethoxyflavone which is isolated from the extract of citrus fruits peels. It exhibits a broad spectrum of biological activities such as anti-cancer, anti-inflammatory, cardiovascular protective and neuroprotective effects, however, its effect in melanogenesis remains uninvestigated. Melanin synthesis is a very important biological process in curing disease such as vitiligo with depigmentation on the skin. In the current work, we aim to confirm the bioactivity and mechanism of 5-demethylnobiletin in stimulating melanogenesis. To confirm the mechanistic role of 5-demethylnobiletin in enhancing melanogenesis, its effect on the activity of tyrosinase, together with the level of microphthalmia-associated transcription factor (MITF), Trp-1, Trp-2, melanocyte-specific marker protein PMEL17, Rab27a, Melanophilin and Myosin VA were studied in B16F10 melanoma cells. Multiple biological assays on melanogenesis-associated proteins such as melanin content detection, tyrosinase activity colorimetric assay, qPCR, western blot analysis, dual-luciferase reporter assay, cAMP activity assay and Fontana-Masson ammoniacal silver staining were used to confirm the role of 5-demethylnobiletin in stimulating melanin synthesis and the transportation of melanosomes. As confirmed by multiple biological assays, 5-demethylnobiletin is found to stimulate dendrite structure formation in cells, melanin synthesis and the transportation of melanosomes, via inducing the phosphorylation of cAMP response element-binding protein (CREB) and increasing the intracellular levels of cAMP in vitro through the PKA-dependent pathway. The findings suggested that 5-demethylnobiletin may be considered as a potential natural product candidate for patients with pigment disorder. |
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Keywords | Citrus ; Western blotting ; bioluminescence assay ; colorimetry ; flavanones ; melanin ; melanogenesis ; melanoma ; myosin ; phosphorylation ; polymethoxyflavones ; silver ; transcription factors ; transportation |
Language | English |
Dates of publication | 2022-04 |
Publishing place | Elsevier GmbH |
Document type | Article |
ZDB-ID | 1205240-1 |
ISSN | 1618-095X ; 0944-7113 |
ISSN (online) | 1618-095X |
ISSN | 0944-7113 |
DOI | 10.1016/j.phymed.2022.153941 |
Database | NAL-Catalogue (AGRICOLA) |
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