title: Effect of Purified Mushroom Tyrosinase on Melanin Content and Melanogenic Protein Expression.
abstract: In mammalian melanocytes, melanosome is a highly specialized organelle where melanin is synthesized. Melanin synthesis is controlled by tyrosinase, the vital enzyme in melanogenic pathway. The present investigation is based on an effect of purified mushroom tyrosinase ofAgaricus bisporuson B16F10 melanocytes for the melanin production via blocking pigment cell machinery. Using B16F10 melanocytes showed that the stimulation of melanogenesis by purified tyrosinase is due to increased tyrosinase absorption. Cellular tyrosinase activity and melanin content in B16F10 melanocytes were increased by purified tyrosinase in a dose-dependent manner. Western blot analysis revealed that cellular tyrosinase levels were enhanced after treatment with purified tyrosinase for 48 hours. Furthermore, tyrosinase induced phosphorylation of cyclic adenosine monophosphate (cAMP) response element-binding protein (CREB) in a dose-dependent manner. The purified tyrosinase-mediated increase of tyrosinase activity was significantly attenuated by H89, LY294002, Ro-32-0432, and PD98059, cAMP-dependent protein kinase inhibitors. The results indicate that purified tyrosinase can be used as contestant for the treatment of vitiligous skin conditions.
authors.affiliation: Biotechnology Pharmacology Laboratory, Centre for Scientific Research & Development, People's University, Bhopal 462037, India.
authors.forename: Kamal Uddin
authors.identifier: 0000-0002-0217-7534
authors.initials: KU
authors.lastname: Zaidi
authors.affiliation: Department of Zoology & Biotechnology, Saifia College of Science, Bhopal 462001, India.
authors.forename: Sharique A
authors.identifier: 0000-0003-4143-6380
authors.initials: SA
authors.lastname: Ali
authors.affiliation: Department of Zoology & Biotechnology, Saifia College of Science, Bhopal 462001, India.
authors.forename: Ayesha S
authors.initials: AS
authors.lastname: Ali