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Choi J, Neupane T, Baral R, Jee JG. Hydroxamic Acid as a Potent Metal-Binding Group for Inhibiting Tyrosinase. Antioxidants (Basel) 2022; 11:antiox11020280. [PMID: 35204163 PMCID: PMC8868331 DOI: 10.3390/antiox11020280] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Revised: 01/28/2022] [Accepted: 01/28/2022] [Indexed: 12/10/2022] Open
Abstract
Tyrosinase, a metalloenzyme containing a dicopper cofactor, plays a central role in synthesizing melanin from tyrosine. Many studies have aimed to identify small-molecule inhibitors of tyrosinase for pharmaceutical, cosmetic, and agricultural purposes. In this study, we report that hydroxamic acid is a potent metal-binding group for interacting with dicopper atoms, thereby inhibiting tyrosinase. Hydroxamate-containing molecules, including anticancer drugs targeting histone deacetylase, vorinostat and panobinostat, significantly inhibited mushroom tyrosinase, with inhibitory constants in the submicromolar range. Of the tested molecules, benzohydroxamic acid was the most potent. Its inhibitory constant of 7 nM indicates that benzohydroxamic acid is one of the most potent tyrosinase inhibitors. Results from differential scanning fluorimetry revealed that direct binding mediates inhibition. The enzyme kinetics were studied to assess the inhibitory mechanism of the hydroxamate-containing molecules. Experiments with B16F10 cell lysates confirmed that the new inhibitors are inhibitory against mammalian tyrosinase. Docking simulation data revealed intermolecular contacts between hydroxamate-containing molecules and tyrosinase.
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Cinnamic acid derivatives linked to arylpiperazines as novel potent inhibitors of tyrosinase activity and melanin synthesis. Eur J Med Chem 2022; 231:114147. [DOI: 10.1016/j.ejmech.2022.114147] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 01/10/2022] [Accepted: 01/18/2022] [Indexed: 12/14/2022]
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Design, synthesis and biological evaluation of tyrosinase-targeting PROTACs. Eur J Med Chem 2021; 226:113850. [PMID: 34628235 DOI: 10.1016/j.ejmech.2021.113850] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 09/09/2021] [Accepted: 09/09/2021] [Indexed: 02/05/2023]
Abstract
The human tyrosinase is the most prominent therapeutic target for pigmentary skin disorders. However, the overwhelming majority efforts have been devoted to search mushroom tyrosinase inhibitors, which show poor inhibitory activity on human tyrosinase and certain side effects that cause skin damage in practical application. Herein, a series of degraders that directly targeted human tyrosinase was firstly designed and synthesized based on newly developed PROTAC technology. The best PROTAC TD9 induced human tyrosinase degradation obviously in dose and time-dependent manner, and its mechanism of inducing tyrosinase degradation has also been clearly demonstrated. Besides, encouraging results that low-toxicity PROTAC TD9 was applied to reduce zebrafish melanin synthesis have been obtained, highlighting the potential to treatment of tyrosinase-related disorders. Moreover, this work has innovatively expanded the application scope of PROTAC technology and laid a solid foundation for further development of novel drugs treating pigmentary skin disorders.
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Matias M, Pinho JO, Penetra MJ, Campos G, Reis CP, Gaspar MM. The Challenging Melanoma Landscape: From Early Drug Discovery to Clinical Approval. Cells 2021; 10:3088. [PMID: 34831311 PMCID: PMC8621991 DOI: 10.3390/cells10113088] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 11/02/2021] [Accepted: 11/06/2021] [Indexed: 02/06/2023] Open
Abstract
Melanoma is recognized as the most dangerous type of skin cancer, with high mortality and resistance to currently used treatments. To overcome the limitations of the available therapeutic options, the discovery and development of new, more effective, and safer therapies is required. In this review, the different research steps involved in the process of antimelanoma drug evaluation and selection are explored, including information regarding in silico, in vitro, and in vivo experiments, as well as clinical trial phases. Details are given about the most used cell lines and assays to perform both two- and three-dimensional in vitro screening of drug candidates towards melanoma. For in vivo studies, murine models are, undoubtedly, the most widely used for assessing the therapeutic potential of new compounds and to study the underlying mechanisms of action. Here, the main melanoma murine models are described as well as other animal species. A section is dedicated to ongoing clinical studies, demonstrating the wide interest and successful efforts devoted to melanoma therapy, in particular at advanced stages of the disease, and a final section includes some considerations regarding approval for marketing by regulatory agencies. Overall, considerable commitment is being directed to the continuous development of optimized experimental models, important for the understanding of melanoma biology and for the evaluation and validation of novel therapeutic strategies.
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Affiliation(s)
- Mariana Matias
- Research Institute for Medicines, iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal; (M.M.); (J.O.P.); (M.J.P.)
| | - Jacinta O. Pinho
- Research Institute for Medicines, iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal; (M.M.); (J.O.P.); (M.J.P.)
| | - Maria João Penetra
- Research Institute for Medicines, iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal; (M.M.); (J.O.P.); (M.J.P.)
| | - Gonçalo Campos
- CICS–UBI–Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, 6201-506 Covilhã, Portugal;
| | - Catarina Pinto Reis
- Research Institute for Medicines, iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal; (M.M.); (J.O.P.); (M.J.P.)
| | - Maria Manuela Gaspar
- Research Institute for Medicines, iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal; (M.M.); (J.O.P.); (M.J.P.)
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Mirabile S, Vittorio S, Paola Germanò M, Adornato I, Ielo L, Rapisarda A, Gitto R, Pintus F, Fais A, De Luca L. Evaluation of 4-(4-Fluorobenzyl)piperazin-1-yl]-Based Compounds as Competitive Tyrosinase Inhibitors Endowed with Antimelanogenic Effects. ChemMedChem 2021; 16:3083-3093. [PMID: 34223697 PMCID: PMC8518915 DOI: 10.1002/cmdc.202100396] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/02/2021] [Indexed: 11/11/2022]
Abstract
There is a considerable attention for the development of inhibitors of tyrosinase (TYR) as therapeutic strategy for the treatment of hyperpigmentation disorders in humans. Continuing in our efforts to identify TYR inhibitors, we describe the design, synthesis and pharmacophore exploration of new small molecules structurally characterized by the presence of the 4-fluorobenzylpiperazine moiety as key pharmacophoric feature for the inhibition of TYR from Agaricus bisporus (AbTYR). Our investigations resulted in the discovery of the competitive inhibitor [4-(4-fluorobenzyl)piperazin-1-yl]-(3-chloro-2-nitro-phenyl)methanone 26 (IC50 =0.18 μM) that proved to be ∼100-fold more active than reference compound kojic acid (IC50 =17.76 μM). Notably, compound 26 exerted antimelanogenic effect on B16F10 cells in absence of cytotoxicity. Docking analysis suggested its binding mode into AbTYR and into modelled human TYR.
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Affiliation(s)
- Salvatore Mirabile
- Department of ChemicalBiological, Pharmaceutical and Environmental SciencesUniversity of MessinaViale Palatucci 1398168MessinaItaly
| | - Serena Vittorio
- Department of ChemicalBiological, Pharmaceutical and Environmental SciencesUniversity of MessinaViale Palatucci 1398168MessinaItaly
| | - Maria Paola Germanò
- Department of ChemicalBiological, Pharmaceutical and Environmental SciencesUniversity of MessinaViale Palatucci 1398168MessinaItaly
| | - Ilenia Adornato
- Department of ChemicalBiological, Pharmaceutical and Environmental SciencesUniversity of MessinaViale Palatucci 1398168MessinaItaly
| | - Laura Ielo
- Department of ChemistryUniversity of TurinVia P. Giuria 710125TurinItaly
| | - Antonio Rapisarda
- Department of ChemicalBiological, Pharmaceutical and Environmental SciencesUniversity of MessinaViale Palatucci 1398168MessinaItaly
| | - Rosaria Gitto
- Department of ChemicalBiological, Pharmaceutical and Environmental SciencesUniversity of MessinaViale Palatucci 1398168MessinaItaly
| | - Francesca Pintus
- Department of Life and Environment SciencesUniversity of Cagliari09042MonserratoCagliariItaly
| | - Antonella Fais
- Department of Life and Environment SciencesUniversity of Cagliari09042MonserratoCagliariItaly
| | - Laura De Luca
- Department of ChemicalBiological, Pharmaceutical and Environmental SciencesUniversity of MessinaViale Palatucci 1398168MessinaItaly
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Design, synthesis, and biological evaluation of symmetrical azine derivatives as novel tyrosinase inhibitors. BMC Chem 2021; 15:54. [PMID: 34587988 PMCID: PMC8480273 DOI: 10.1186/s13065-021-00780-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 09/15/2021] [Indexed: 12/23/2022] Open
Abstract
A series of symmetrical azine derivatives containing different substituted benzyl moieties were designed, synthesized, and evaluated for their inhibitory activity against tyrosinase. The results showed that compounds 3e, 3f, 3h, 3i, 3j, and 3k possess effective tyrosinase inhibition with IC50 values ranging from 7.30 μM to 62.60 μM. Particularly, compounds 3f displayed around three-fold improvement in the potency (IC50 = 7.30 ± 1.15 μM) compared to that of kojic acid (IC50 = 20.24 ± 2.28 μM) as the positive control. Kinetic study of compound 3f confirmed uncompetitive inhibitory activity towards tyrosinase indicating that it can bind to enzyme–substrate complex. Next, molecular docking analysis was performed to study the interactions and binding mode of the most potent compound 3f in the tyrosinase active site. Besides, the cytotoxicity of 3f, as well as its potency to reduce the melanin content were also measured on invasive melanoma B16F10 cell line. Also, 3f exhibited above 82% cell viability in the A375 cell line at 10 µM. Consequently, compounds 3f could be introduced as a potent tyrosinase inhibitor that might be a promising candidate in the cosmetics, medicine, and food industry.
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Choi H, Ryu IY, Choi I, Ullah S, Jung HJ, Park Y, Jeong Y, Hwang Y, Hong S, Yoon IS, Yun H, Kim MS, Yoo JW, Jung Y, Chun P, Moon HR. Novel Anti-Melanogenic Compounds, ( Z)-5-(Substituted Benzylidene)-4-thioxothiazolidin-2-one Derivatives: In Vitro and In Silico Insights. Molecules 2021; 26:4963. [PMID: 34443550 PMCID: PMC8400311 DOI: 10.3390/molecules26164963] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/11/2021] [Accepted: 08/12/2021] [Indexed: 11/17/2022] Open
Abstract
To confirm that the β-phenyl-α,β-unsaturated thiocarbonyl (PUSTC) scaffold, similar to the β-phenyl-α,β-unsaturated carbonyl (PUSC) scaffold, acts as a core inhibitory structure for tyrosinase, twelve (Z)-5-(substituted benzylidene)-4-thioxothiazolidin-2-one ((Z)-BTTZ) derivatives were designed and synthesized. Seven of the twelve derivatives showed stronger inhibitory activity than kojic acid against mushroom tyrosinase. Compound 2b (IC50 = 0.47 ± 0.97 µM) exerted a 141-fold higher inhibitory potency than kojic acid. Kinetic studies' results confirmed that compounds 2b and 2f are competitive tyrosinase inhibitors, which was supported by high binding affinities with the active site of tyrosinase by docking simulation. Docking results using a human tyrosinase homology model indicated that 2b and 2f might potently inhibit human tyrosinase. In vitro assays of 2b and 2f were conducted using B16F10 melanoma cells. Compounds 2b and 2f significantly and concentration-dependently inhibited intracellular melanin contents, and the anti-melanogenic effects of 2b at 10 µM and 2f at 25 µM were considerably greater than the inhibitory effect of kojic acid at 25 µM. Compounds 2b and 2f similarly inhibited cellular tyrosinase activity and melanin contents, indicating that the anti-melanogenic effects of both were due to tyrosinase inhibition. A strong binding affinity with the active site of tyrosinase and potent inhibitions of mushroom tyrosinase, cellular tyrosinase activity, and melanin generation in B16F10 cells indicates the PUSTC scaffold offers an attractive platform for the development of novel tyrosinase inhibitors.
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Affiliation(s)
- Heejeong Choi
- Laboratory of Medicinal Chemistry, College of Pharmacy, Pusan National University, Busan 46241, Korea; (H.C.); (I.Y.R.); (I.C.); (H.J.J.); (Y.P.); (Y.J.); (Y.H.); (S.H.); (I.-S.Y.); (H.Y.); (M.-S.K.); (J.-W.Y.); (Y.J.)
| | - Il Young Ryu
- Laboratory of Medicinal Chemistry, College of Pharmacy, Pusan National University, Busan 46241, Korea; (H.C.); (I.Y.R.); (I.C.); (H.J.J.); (Y.P.); (Y.J.); (Y.H.); (S.H.); (I.-S.Y.); (H.Y.); (M.-S.K.); (J.-W.Y.); (Y.J.)
| | - Inkyu Choi
- Laboratory of Medicinal Chemistry, College of Pharmacy, Pusan National University, Busan 46241, Korea; (H.C.); (I.Y.R.); (I.C.); (H.J.J.); (Y.P.); (Y.J.); (Y.H.); (S.H.); (I.-S.Y.); (H.Y.); (M.-S.K.); (J.-W.Y.); (Y.J.)
| | - Sultan Ullah
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, FL 33458, USA;
| | - Hee Jin Jung
- Laboratory of Medicinal Chemistry, College of Pharmacy, Pusan National University, Busan 46241, Korea; (H.C.); (I.Y.R.); (I.C.); (H.J.J.); (Y.P.); (Y.J.); (Y.H.); (S.H.); (I.-S.Y.); (H.Y.); (M.-S.K.); (J.-W.Y.); (Y.J.)
| | - Yujin Park
- Laboratory of Medicinal Chemistry, College of Pharmacy, Pusan National University, Busan 46241, Korea; (H.C.); (I.Y.R.); (I.C.); (H.J.J.); (Y.P.); (Y.J.); (Y.H.); (S.H.); (I.-S.Y.); (H.Y.); (M.-S.K.); (J.-W.Y.); (Y.J.)
| | - Yeongmu Jeong
- Laboratory of Medicinal Chemistry, College of Pharmacy, Pusan National University, Busan 46241, Korea; (H.C.); (I.Y.R.); (I.C.); (H.J.J.); (Y.P.); (Y.J.); (Y.H.); (S.H.); (I.-S.Y.); (H.Y.); (M.-S.K.); (J.-W.Y.); (Y.J.)
| | - YeJi Hwang
- Laboratory of Medicinal Chemistry, College of Pharmacy, Pusan National University, Busan 46241, Korea; (H.C.); (I.Y.R.); (I.C.); (H.J.J.); (Y.P.); (Y.J.); (Y.H.); (S.H.); (I.-S.Y.); (H.Y.); (M.-S.K.); (J.-W.Y.); (Y.J.)
| | - Sojeong Hong
- Laboratory of Medicinal Chemistry, College of Pharmacy, Pusan National University, Busan 46241, Korea; (H.C.); (I.Y.R.); (I.C.); (H.J.J.); (Y.P.); (Y.J.); (Y.H.); (S.H.); (I.-S.Y.); (H.Y.); (M.-S.K.); (J.-W.Y.); (Y.J.)
| | - In-Soo Yoon
- Laboratory of Medicinal Chemistry, College of Pharmacy, Pusan National University, Busan 46241, Korea; (H.C.); (I.Y.R.); (I.C.); (H.J.J.); (Y.P.); (Y.J.); (Y.H.); (S.H.); (I.-S.Y.); (H.Y.); (M.-S.K.); (J.-W.Y.); (Y.J.)
| | - Hwayoung Yun
- Laboratory of Medicinal Chemistry, College of Pharmacy, Pusan National University, Busan 46241, Korea; (H.C.); (I.Y.R.); (I.C.); (H.J.J.); (Y.P.); (Y.J.); (Y.H.); (S.H.); (I.-S.Y.); (H.Y.); (M.-S.K.); (J.-W.Y.); (Y.J.)
| | - Min-Soo Kim
- Laboratory of Medicinal Chemistry, College of Pharmacy, Pusan National University, Busan 46241, Korea; (H.C.); (I.Y.R.); (I.C.); (H.J.J.); (Y.P.); (Y.J.); (Y.H.); (S.H.); (I.-S.Y.); (H.Y.); (M.-S.K.); (J.-W.Y.); (Y.J.)
| | - Jin-Wook Yoo
- Laboratory of Medicinal Chemistry, College of Pharmacy, Pusan National University, Busan 46241, Korea; (H.C.); (I.Y.R.); (I.C.); (H.J.J.); (Y.P.); (Y.J.); (Y.H.); (S.H.); (I.-S.Y.); (H.Y.); (M.-S.K.); (J.-W.Y.); (Y.J.)
| | - Yunjin Jung
- Laboratory of Medicinal Chemistry, College of Pharmacy, Pusan National University, Busan 46241, Korea; (H.C.); (I.Y.R.); (I.C.); (H.J.J.); (Y.P.); (Y.J.); (Y.H.); (S.H.); (I.-S.Y.); (H.Y.); (M.-S.K.); (J.-W.Y.); (Y.J.)
| | - Pusoon Chun
- College of Pharmacy, Inje University, Gyeongnam, Gimhae 50834, Korea
- Inje Institute of Pharmaceutical Sciences and Research, Inje University, Gyeongnam, Gimhae 50834, Korea
| | - Hyung Ryong Moon
- Laboratory of Medicinal Chemistry, College of Pharmacy, Pusan National University, Busan 46241, Korea; (H.C.); (I.Y.R.); (I.C.); (H.J.J.); (Y.P.); (Y.J.); (Y.H.); (S.H.); (I.-S.Y.); (H.Y.); (M.-S.K.); (J.-W.Y.); (Y.J.)
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58
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Wang J, Blancafort L. Stability and Optical Absorption of a Comprehensive Virtual Library of Minimal Eumelanin Oligomer Models**. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jun Wang
- Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials Jiangsu Engineering Laboratory for Environment Functional Materials School of Chemistry and Chemical Engineering Huaiyin Normal University No.111 West Changjiang Road Huaian 223300 Jiangsu Province P. R. China
- Institut de Química Computacional i Catàlisi and Departament de Química Universitat de Girona, Facultat de Ciències C/M. A. Capmany 69 17003 Girona Spain
| | - Lluís Blancafort
- Institut de Química Computacional i Catàlisi and Departament de Química Universitat de Girona, Facultat de Ciències C/M. A. Capmany 69 17003 Girona Spain
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Grabowska K, Galanty A, Koczurkiewicz-Adamczyk P, Wróbel-Biedrawa D, Żmudzki P, Załuski D, Wójcik-Pszczoła K, Paśko P, Pękala E, Podolak I. Multidirectional anti-melanoma effect of galactolipids (MGDG-1 and DGDG-1) from Impatiens parviflora DC. and their synergy with doxorubicin. Toxicol In Vitro 2021; 76:105231. [PMID: 34358613 DOI: 10.1016/j.tiv.2021.105231] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 07/08/2021] [Accepted: 07/31/2021] [Indexed: 02/08/2023]
Abstract
The anti-melanoma potential of galactolipids: MGDG-1 and DGDG-1, isolated from Impatiens parviflora, and their synergistic effect with anticancer drug - doxorubicin (DOX) was investigated. Both compounds demonstrated time- and dose-dependent cytotoxicity against human melanoma cells of different metastatic potential. MGDG-1 was more effective than DGDG-1, with the highest activity against A375 cell line (IC50 = 15.14 μg/mL). Both compounds acted selectively, were devoid of hepatotoxicity or mutagenicity. Additionally, MGDG-1 proved to be a tyrosinase inhibitor. Co-administration of MGDG-1 and DGDG-1 with DOX revealed a synergistic cytotoxic effect on melanoma cells. The cytotoxicity of all tested MGDG-1/DOX and DGDG-1/DOX cocktails was considerably higher than that of each agent administered alone. MGDG-1/DOX (Mix3) reduced the viability of A375 melanoma cells almost totally and this effect was 2-fold more potent as compared to DOX alone. Our study indicates that the overall effect is enhanced with the increasing concentration of MGDG-1 in the cocktail. These results open up a possibility for lowering therapeutic doses of chemotherapeutics such as doxorubicin when co-administrated with galactolipids. Thus, MGDG-1 can be prospectively considered as multidirectional anti-melanoma agent and can be recommended for further in vitro and in vivo studies, especially in search for effective combined therapy.
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Affiliation(s)
- Karolina Grabowska
- Department of Pharmacognosy, Faculty of Pharmacy, Jagiellonian University, Medical College, Medyczna 9, 30-688 Kraków, Poland.
| | - Agnieszka Galanty
- Department of Pharmacognosy, Faculty of Pharmacy, Jagiellonian University, Medical College, Medyczna 9, 30-688 Kraków, Poland.
| | - Paulina Koczurkiewicz-Adamczyk
- Department of Pharmaceutical Biochemistry, Faculty of Pharmacy, Jagiellonian University, Medical College, Medyczna 9, 30-688 Kraków, Poland.
| | - Dagmara Wróbel-Biedrawa
- Department of Pharmacognosy, Faculty of Pharmacy, Jagiellonian University, Medical College, Medyczna 9, 30-688 Kraków, Poland.
| | - Paweł Żmudzki
- Department of Medicinal Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, ul. Medyczna 9, 30-688 Kraków, Poland.
| | - Daniel Załuski
- Department of Pharmacognosy, Ludwik Rydygier Collegium Medicum, Nicolaus Copernicus University, Marie Curie-Skłodowska 9, 85 -094 Bydgoszcz, Poland.
| | - Katarzyna Wójcik-Pszczoła
- Department of Pharmaceutical Biochemistry, Faculty of Pharmacy, Jagiellonian University, Medical College, Medyczna 9, 30-688 Kraków, Poland.
| | - Paweł Paśko
- Department of Food Chemistry and Nutrition, Faculty of Pharmacy, Jagiellonian University, Medical College, Medyczna 9, 30-688 Kraków, Poland.
| | - Elżbieta Pękala
- Department of Pharmaceutical Biochemistry, Faculty of Pharmacy, Jagiellonian University, Medical College, Medyczna 9, 30-688 Kraków, Poland.
| | - Irma Podolak
- Department of Pharmacognosy, Faculty of Pharmacy, Jagiellonian University, Medical College, Medyczna 9, 30-688 Kraków, Poland.
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60
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Recent advances in the design and discovery of synthetic tyrosinase inhibitors. Eur J Med Chem 2021; 224:113744. [PMID: 34365131 DOI: 10.1016/j.ejmech.2021.113744] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 07/28/2021] [Accepted: 07/28/2021] [Indexed: 02/08/2023]
Abstract
Tyrosinase is a copper-containing metalloenzyme that is responsible for the rate-limiting catalytic step in the melanin biosynthesis and enzymatic browning. As a promising target, tyrosinase inhibitors can be used as skin whitening agents and food preservatives, thus having broad potential in the fields of food, cosmetics, agriculture and medicine. From 2015 to 2020, numerous synthetic inhibitors of tyrosinase have been developed to overcome the challenges of low efficacy and side effects. This review summarizes the enzyme structure and biological functions of tyrosinase and demonstrates the recent advances of synthetic tyrosinase inhibitors from the perspective of medicinal chemistry, providing a better understanding of the catalytic mechanisms and more effective tyrosinase inhibitors.
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Kurihara H, Kujira K. Phlorotannins Derived From the Brown Alga Colpomenia bullosa as Tyrosinase Inhibitors. Nat Prod Commun 2021. [DOI: 10.1177/1934578x211021317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Tyrosinase catalyzes hydroxylation of L-tyrosine and dehydrogenation of L-DOPA in the melanin biosynthesis pathway. Tyrosinase inhibitors have potential use as cosmetic whitening agents and for preventing seafood deterioration. In this report, tyrosinase inhibitors extracted from brown alga Colpomenia bullosa (Scytosiphonaceae, Scytosiphonales) were investigated. Inhibitory principles were isolated from the extract and identified as phlorotannins, phloroglucinol (1), diphlorethol (2), triphlorethol C (3), which have not been isolated in a free form previously, and fucophlorethol C (4). Compounds 3 and 4 have not been reported previously as tyrosinase inhibitors. Triphlorethol C (3) was the most potent tyrosinase inhibitor among the phlorotannins isolated, whereas isomeric fucophlorethol C (4) displayed the weakest inhibitory activity. The results suggest that molecular structures of phlorotannins strongly affect their tyrosinase inhibitory activity.
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Affiliation(s)
| | - Kazuki Kujira
- Graduate School of Fisheries Sciences, Hokkaido University, Hakodate, Japan
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62
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Characterization of Temperature-Dependent Kinetics of Oculocutaneous Albinism-Causing Mutants of Tyrosinase. Int J Mol Sci 2021; 22:ijms22157771. [PMID: 34360537 PMCID: PMC8346126 DOI: 10.3390/ijms22157771] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 07/12/2021] [Accepted: 07/16/2021] [Indexed: 01/06/2023] Open
Abstract
Human tyrosinase (Tyr) is a glycoenzyme that catalyzes the first and rate-limiting step in melanin production, and its gene (TYR) is mutated in many cases of oculocutaneous albinism type 1 (OCA1). The mechanisms by which individual mutations contribute to the diverse pigmentation phenotype in patients with OCA1 have only began to be examined and remain to be delineated. Here, we analyze the temperature-dependent kinetics of wild-type Tyr (WT) and two OCA1B mutant variants (R422Q and P406L) using Michaelis–Menten and Van’t Hoff analyses. Recombinant truncated human Tyr proteins (residues 19–469) were produced in the whole insect Trichoplusia Ni larvae. Proteins were purified by a combination of affinity and size-exclusion chromatography. The temperature dependence of diphenol oxidase protein activities and kinetic parameters were measured by dopachrome absorption. Using the same experimental conditions, computational simulations were performed to assess the temperature-dependent association of L-DOPA and Tyr. Our results revealed, for the first time, that the association of L-DOPA with R422Q and P406L followed by dopachrome formation is a complex reaction supported by enthalpy and entropy forces. We show that the WT has a higher turnover number as compared with both R422Q and P406L. Elucidating the kinetics and thermodynamics of mutant variants of Tyr in OCA1B helps to understand the mechanisms by which they lower Tyr catalytic activity and to discover novel therapies for patients.
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Wang J, Blancafort L. Stability and Optical Absorption of a Comprehensive Virtual Library of Minimal Eumelanin Oligomer Models*. Angew Chem Int Ed Engl 2021; 60:18800-18809. [PMID: 34114313 PMCID: PMC8457142 DOI: 10.1002/anie.202106289] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 06/09/2021] [Indexed: 12/11/2022]
Abstract
Eumelanin is responsible for photoprotection in living organisms. It is made of 5,6‐dihydroxyindole (DHI) oligomers. However, lack of detailed structural knowledge limits understanding its function and exploiting its potential in material science. To uncover the relationship between structural stability and optical properties, we have studied a virtual library of 830 DHI dimers. We find a preference for oxidized, polycyclic structures which speaks in favor of graphite‐like structures for the larger oligomers, and propose an electrocyclic formation mechanism. Besides widely considered quinone oxidation patterns, also structures with interfragment double bonds and zwitterionic resonance structures are stable. Future theoretical melanine models will have to cover this diversity, and we introduce a new representative set of 49 stable dimers. Some stable oxidized dimers have absorption energies as low as 1.3 eV. They may be present as substructures in the naturally found oligomers and contribute to the absorption spectrum of the biopolymer.
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Affiliation(s)
- Jun Wang
- Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, Jiangsu Engineering Laboratory for Environment Functional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, No.111 West Changjiang Road, Huaian, 223300, Jiangsu Province, P. R. China.,Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, Facultat de Ciències, C/M. A. Capmany 69, 17003, Girona, Spain
| | - Lluís Blancafort
- Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, Facultat de Ciències, C/M. A. Capmany 69, 17003, Girona, Spain
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Lee S, Choi H, Park Y, Jung HJ, Ullah S, Choi I, Kang D, Park C, Ryu IY, Jeong Y, Hwang Y, Hong S, Chun P, Moon HR. Urolithin and Reduced Urolithin Derivatives as Potent Inhibitors of Tyrosinase and Melanogenesis: Importance of the 4-Substituted Resorcinol Moiety. Int J Mol Sci 2021; 22:ijms22115616. [PMID: 34070680 PMCID: PMC8199067 DOI: 10.3390/ijms22115616] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 05/17/2021] [Accepted: 05/22/2021] [Indexed: 12/17/2022] Open
Abstract
We previously reported (E)-β-phenyl-α,β-unsaturated carbonyl scaffold ((E)-PUSC) played an important role in showing high tyrosinase inhibitory activity and that derivatives with a 4-substituted resorcinol moiety as the β-phenyl group of the scaffold resulted in the greatest tyrosinase inhibitory activity. To examine whether the 4-substituted resorcinol moiety could impart tyrosinase inhibitory activity in the absence of the α,β-unsaturated carbonyl moiety of the (E)-PUSC scaffold, 10 urolithin derivatives were synthesized. To obtain more candidate samples, the lactone ring in synthesized urolithins was reduced to produce nine reduced urolithins. Compounds 1c (IC50 = 18.09 ± 0.25 μM), 1h (IC50 = 4.14 ± 0.10 μM), and 2a (IC50 = 15.69 ± 0.40 μM) had greater mushroom tyrosinase-inhibitory activities than kojic acid (KA) (IC50 = 48.62 ± 3.38 μM). The SAR results suggest that the 4-substituted resorcinol motif makes an important contribution to tyrosinase inhibition. To investigate whether these compounds bind to human tyrosinase, a human tyrosinase homology model was developed. Docking simulations with mushroom and human tyrosinases showed that 1c, 1h, and 2a bind to the active site of both tyrosinases with higher binding affinities than KA. Pharmacophore analyses showed that two hydroxyl groups of the 4-substituted resorcinol entity act as hydrogen bond donors in both mushroom and human tyrosinases. Kinetic analyses indicated that these compounds were all competitive inhibitors. Compound 2a inhibited cellular tyrosinase activity and melanogenesis in α-MSH plus IBMX-stimulated B16F10 melanoma cells more strongly than KA. These results suggest that 2a is a promising candidate for the treatment of skin pigment disorders, and show the 4-substituted resorcinol entity importantly contributes to tyrosinase inhibition.
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Affiliation(s)
- Sanggwon Lee
- College of Pharmacy, Pusan National University, Busan 46241, Korea; (S.L.); (H.C.); (Y.P.); (H.J.J.); (I.C.); (D.K.); (C.P.); (I.Y.R.); (Y.J.); (Y.H.); (S.H.)
| | - Heejeong Choi
- College of Pharmacy, Pusan National University, Busan 46241, Korea; (S.L.); (H.C.); (Y.P.); (H.J.J.); (I.C.); (D.K.); (C.P.); (I.Y.R.); (Y.J.); (Y.H.); (S.H.)
| | - Yujin Park
- College of Pharmacy, Pusan National University, Busan 46241, Korea; (S.L.); (H.C.); (Y.P.); (H.J.J.); (I.C.); (D.K.); (C.P.); (I.Y.R.); (Y.J.); (Y.H.); (S.H.)
| | - Hee Jin Jung
- College of Pharmacy, Pusan National University, Busan 46241, Korea; (S.L.); (H.C.); (Y.P.); (H.J.J.); (I.C.); (D.K.); (C.P.); (I.Y.R.); (Y.J.); (Y.H.); (S.H.)
| | - Sultan Ullah
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, FL 33458, USA;
| | - Inkyu Choi
- College of Pharmacy, Pusan National University, Busan 46241, Korea; (S.L.); (H.C.); (Y.P.); (H.J.J.); (I.C.); (D.K.); (C.P.); (I.Y.R.); (Y.J.); (Y.H.); (S.H.)
| | - Dongwan Kang
- College of Pharmacy, Pusan National University, Busan 46241, Korea; (S.L.); (H.C.); (Y.P.); (H.J.J.); (I.C.); (D.K.); (C.P.); (I.Y.R.); (Y.J.); (Y.H.); (S.H.)
| | - Chaeun Park
- College of Pharmacy, Pusan National University, Busan 46241, Korea; (S.L.); (H.C.); (Y.P.); (H.J.J.); (I.C.); (D.K.); (C.P.); (I.Y.R.); (Y.J.); (Y.H.); (S.H.)
| | - Il Young Ryu
- College of Pharmacy, Pusan National University, Busan 46241, Korea; (S.L.); (H.C.); (Y.P.); (H.J.J.); (I.C.); (D.K.); (C.P.); (I.Y.R.); (Y.J.); (Y.H.); (S.H.)
| | - Yeongmu Jeong
- College of Pharmacy, Pusan National University, Busan 46241, Korea; (S.L.); (H.C.); (Y.P.); (H.J.J.); (I.C.); (D.K.); (C.P.); (I.Y.R.); (Y.J.); (Y.H.); (S.H.)
| | - YeJi Hwang
- College of Pharmacy, Pusan National University, Busan 46241, Korea; (S.L.); (H.C.); (Y.P.); (H.J.J.); (I.C.); (D.K.); (C.P.); (I.Y.R.); (Y.J.); (Y.H.); (S.H.)
| | - Sojeong Hong
- College of Pharmacy, Pusan National University, Busan 46241, Korea; (S.L.); (H.C.); (Y.P.); (H.J.J.); (I.C.); (D.K.); (C.P.); (I.Y.R.); (Y.J.); (Y.H.); (S.H.)
| | - Pusoon Chun
- College of Pharmacy and Inje Institute of Pharmaceutical Sciences and Research, Inje University, Gimhae 50834, Korea;
| | - Hyung Ryong Moon
- College of Pharmacy, Pusan National University, Busan 46241, Korea; (S.L.); (H.C.); (Y.P.); (H.J.J.); (I.C.); (D.K.); (C.P.); (I.Y.R.); (Y.J.); (Y.H.); (S.H.)
- Correspondence: ; Tel.: +82-51-510-2815; Fax: +82-51-513-6754
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Vanjare BD, Choi NG, Mahajan PG, Raza H, Hassan M, Han Y, Yu SM, Kim SJ, Seo SY, Lee KH. Novel 1,3,4-oxadiazole compounds inhibit the tyrosinase and melanin level: Synthesis, in-vitro, and in-silico studies. Bioorg Med Chem 2021; 41:116222. [PMID: 34058664 DOI: 10.1016/j.bmc.2021.116222] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 05/12/2021] [Accepted: 05/13/2021] [Indexed: 11/17/2022]
Abstract
In this research work, we have designed and synthesized some biologically useful of 1,3,4-Oxadiazoles. The structural interpretation of the synthesized compounds has been validated by using FT-IR, LC-MS, HRMS, 1H NMR and 13C NMR techniques. Moreover, the in-vitro mushroom tyrosinase inhibitory potential of the target compounds was assessed. The in-vitro study reveals that, all compounds demonstrate an excellent tyrosinase inhibitory activity. Especially, 2-(5-(2-methoxyphenyl)-1,3,4-oxadiazol-2-ylthio)-N-phenylacetamide (IC50 = 0.003 ± 0.00 µM) confirms much more significant potent inhibition activity compared with standard drug kojic acid (IC50 = 16.83 ± 1.16 µM). Subsequently, the most potent five oxadiazole compounds were screened for cytotoxicity study against B16F10 melanoma cells using an MTT assay method. The survival rate for the most potent compound was more pleasant than other compounds. Furthermore, the western blot results proved that the most potent compound considerably decreased the expression level of tyrosinase at 50 µM (P < 0.05). The molecular docking investigation exposed that the utmost potent compound displayed the significant interactions pattern within the active region of the tyrosinase enzyme and which might be responsible for the decent inhibitory activity towards the enzyme. A molecular dynamic simulation experiment was presented to recognize the residual backbone stability of protein structure.
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Affiliation(s)
- Balasaheb D Vanjare
- Dept. of Chemistry, Kongju National University, Gongju, Chungnam 32588, Republic of Korea
| | - Nam Gyu Choi
- Dept. of Chemistry, Kongju National University, Gongju, Chungnam 32588, Republic of Korea
| | - Prasad G Mahajan
- Vidya Pratishthan's Arts, Science & Commerce College, Vidyanagari, Baramati, Maharashtra 413133, India
| | - Hussain Raza
- Department of Biological Science, Kongju National University, Gongju, Chungnam 32588, Republic of Korea
| | - Mubashir Hassan
- Institute of Molecular Biology and Biotechnology, The University of Lahore, 54590, Pakistan
| | - Yohan Han
- Department of Biological Science, Kongju National University, Gongju, Chungnam 32588, Republic of Korea
| | - Seon-Mi Yu
- Department of Biological Science, Kongju National University, Gongju, Chungnam 32588, Republic of Korea
| | - Song Ja Kim
- Department of Biological Science, Kongju National University, Gongju, Chungnam 32588, Republic of Korea
| | - Sung-Yum Seo
- Department of Biological Science, Kongju National University, Gongju, Chungnam 32588, Republic of Korea
| | - Ki Hwan Lee
- Dept. of Chemistry, Kongju National University, Gongju, Chungnam 32588, Republic of Korea.
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66
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Ko SC, Lee SH. Protocatechuic Aldehyde Inhibits α-MSH-Induced Melanogenesis in B16F10 Melanoma Cells via PKA/CREB-Associated MITF Downregulation. Int J Mol Sci 2021; 22:ijms22083861. [PMID: 33917915 PMCID: PMC8068260 DOI: 10.3390/ijms22083861] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 04/06/2021] [Accepted: 04/08/2021] [Indexed: 11/16/2022] Open
Abstract
Protocatechuic aldehyde (PA) is a naturally occurring phenolic compound that is a potent inhibitor of mushroom tyrosinase. However, the molecular mechanisms of the anti-melanogenesis activity of PA have not yet been reported. The aim of the current study was to clarify the melanogenesis inhibitory effects of PA and its molecular mechanisms in murine melanoma cells (B16F10). We first predicted the 3D structure of tyrosinase and used a molecular docking algorithm to simulate binding between tyrosinase and PA. These molecular modeling studies calculated a binding energy of -527.42 kcal/mol and indicated that PA interacts with Cu400 and 401, Val283, and His263. Furthermore, PA significantly decreased α-MSH-induced intracellular tyrosinase activity and melanin content in a dose-dependent manner. PA also inhibited key melanogenic proteins such as tyrosinase, tyrosinase-related protein 1 (TRP-1), and TRP-2 in α-MSH-stimulated B16F10 cells. In addition, PA decreased MITF expression levels by inhibiting phosphorylation of cAMP response element-binding protein (CREB) and cAMP-dependent protein kinase A (PKA). These results demonstrate that PA can effectively suppress melanin synthesis in melanoma cells. Taken together, our results show that PA could serve as a potential inhibitor of melanogenesis, and hence could be explored as a possible skin-lightening agent.
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Affiliation(s)
- Seok-Chun Ko
- Department of Genetic Resources, National Marine Biodiversity Institute of Korea, Seocheon 33662, Korea;
| | - Seung-Hong Lee
- Department of Pharmaceutical Engineering and Medical Science, Soonchunhyang University, Asan 31538, Korea
- Correspondence: ; Tel.: +82-41-530-4980; Fax: +82-41-530-3085
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Buitrago E, Faure C, Challali L, Bergantino E, Boumendjel A, Bubacco L, Carotti M, Hardré R, Maresca M, Philouze C, Jamet H, Réglier M, Belle C. Ditopic Chelators of Dicopper Centers for Enhanced Tyrosinases Inhibition. Chemistry 2021; 27:4384-4393. [PMID: 33284485 DOI: 10.1002/chem.202004695] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Indexed: 11/08/2022]
Abstract
Tyrosinase enzymes (Tys) are involved in the key steps of melanin (protective pigments) biosynthesis and molecules targeting the binuclear copper active site on tyrosinases represent a relevant strategy to regulate enzyme activities. In this work, the possible synergic effect generated by a combination of known inhibitors is studied. For this, derivatives containing kojic acid (KA) and 2-hydroxypyridine-N-oxide (HOPNO) combined with a thiosemicarbazone (TSC) moiety were synthetized. Their inhibition activities were evaluated on purified tyrosinases from different sources (mushroom, bacterial, and human) as well as on melanin production by lysates from the human melanoma MNT-1 cell line. Results showed significant enhancement of the inhibitory effects compared with the parent compounds, in particular for HOPNO-TSC. To elucidate the interaction mode with the dicopper(II) active site, binding studies with a tyrosinase bio-inspired model of the dicopper(II) center were investigated. The structure of the isolated adduct between one ditopic inhibitor (KA-TSC) and the model complex reveals that the binding to a dicopper center can occur with both chelating sites. Computational studies on model complexes and docking studies on enzymes led to the identification of KA and HOPNO moieties as interacting groups with the dicopper active site.
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Affiliation(s)
- Elina Buitrago
- CNRS, DCM, Université Grenoble Alpes, 38000, Grenoble, France.,CNRS, DPM, Université Grenoble Alpes, 38000, Grenoble, France
| | - Clarisse Faure
- CNRS, DCM, Université Grenoble Alpes, 38000, Grenoble, France
| | - Lylia Challali
- CNRS, DCM, Université Grenoble Alpes, 38000, Grenoble, France
| | - Elisabetta Bergantino
- Department of Biology, University of Padova, Via Ugo Bassi 58b, 35131, Padova, Italy
| | | | - Luigi Bubacco
- Department of Biology, University of Padova, Via Ugo Bassi 58b, 35131, Padova, Italy
| | - Marcello Carotti
- Department of Biology, University of Padova, Via Ugo Bassi 58b, 35131, Padova, Italy
| | - Renaud Hardré
- Centrale Marseille, iSm2, Aix Marseille Université, CNRS, Marseille, France
| | - Marc Maresca
- Centrale Marseille, iSm2, Aix Marseille Université, CNRS, Marseille, France
| | | | - Hélène Jamet
- CNRS, DCM, Université Grenoble Alpes, 38000, Grenoble, France
| | - Marius Réglier
- Centrale Marseille, iSm2, Aix Marseille Université, CNRS, Marseille, France
| | - Catherine Belle
- CNRS, DCM, Université Grenoble Alpes, 38000, Grenoble, France
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Catalano M, Bassi G, Rotondi G, Khettabi L, Dichiara M, Murer P, Scheuermann J, Soler-Lopez M, Neri D. Discovery, affinity maturation and multimerization of small molecule ligands against human tyrosinase and tyrosinase-related protein 1. RSC Med Chem 2020; 12:363-369. [PMID: 34041485 PMCID: PMC8130610 DOI: 10.1039/d0md00310g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Human tyrosinase (hTYR) and tyrosinase-related protein 1 (hTYRP1) are closely-related enzymes involved in the synthesis of melanin, which are selectively expressed in melanocytes and, in a pathological context, in melanoma lesions. We used a previously described tyrosinase inhibitor (Thiamidol™) and DNA-encoded library technology for the discovery of novel hTYR and hTYRP1 ligands, that could be used as vehicles for melanoma targeting. Performing de novo selections with DNA-encoded libraries, we discovered novel ligands capable of binding to both hTYR and hTYRP1. More potent ligands were obtained by multimerizing Thiamidol™ moieties, leading to homotetrameric structures that avidly bound to melanoma cells, as revealed by flow cytometry. These findings suggest that melanoma lesions may, in the future, be targeted not only by monoclonal antibody reagents but also by small organic ligands. A series of different strategies were oriented toward the discovery of small molecule ligands binding to the human version of tyrosinase (hTYR) and tyrosinase-related protein 1 (hTYRP1), which may represent the basis for novel treatments of melanoma.![]()
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Affiliation(s)
- Marco Catalano
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH Zürich) Vladimir-Prelog-Weg 4 CH-8093 Zürich Switzerland
| | - Gabriele Bassi
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH Zürich) Vladimir-Prelog-Weg 4 CH-8093 Zürich Switzerland
| | - Giulia Rotondi
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH Zürich) Vladimir-Prelog-Weg 4 CH-8093 Zürich Switzerland .,Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza University of Rome P.le A. Moro 5 00185 Rome Italy
| | - Lyna Khettabi
- Structural Biology Group, European Synchrotron Radiation Facility 71 Avenue des Martyrs 38000 Grenoble France.,CNRS, DCM, Université Grenoble Alpes 38000 Grenoble France
| | - Maria Dichiara
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH Zürich) Vladimir-Prelog-Weg 4 CH-8093 Zürich Switzerland
| | - Patrizia Murer
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH Zürich) Vladimir-Prelog-Weg 4 CH-8093 Zürich Switzerland
| | - Jörg Scheuermann
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH Zürich) Vladimir-Prelog-Weg 4 CH-8093 Zürich Switzerland
| | - Montserrat Soler-Lopez
- Structural Biology Group, European Synchrotron Radiation Facility 71 Avenue des Martyrs 38000 Grenoble France
| | - Dario Neri
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH Zürich) Vladimir-Prelog-Weg 4 CH-8093 Zürich Switzerland
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Li X, Yang HW, Jiang Y, Oh JY, Jeon YJ, Ryu B. Ishophloroglucin A Isolated from Ishige okamurae Suppresses Melanogenesis Induced by α-MSH: In Vitro and In Vivo. Mar Drugs 2020; 18:E470. [PMID: 32957728 PMCID: PMC7551695 DOI: 10.3390/md18090470] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/09/2020] [Accepted: 09/14/2020] [Indexed: 12/13/2022] Open
Abstract
Diphlorethohydroxycarmalol (DPHC) isolated from Ishige okamurae (IO) showed potential whitening effects against UV-B radiation. However, the components of IO as well as their molecular mechanism against α-melanocyte-stimulating hormone (α-MSH) have not yet been investigated. Thus, this study aimed to investigate the inhibitory effects of Ishophloroglucin A (IPA), a phlorotannin isolated from brown algae IO, and its crude extract (IOE), in melanogenesis in vivo in an α-MSH-induced zebrafish model and in B16F10 melanoma cells in vitro. Molecular docking studies of the phlorotannins were carried out to determine their inhibitory effects and to elucidate their mode of interaction with tyrosinase, a glycoprotein related to melanogenesis. In addition, morphological changes and melanin content decreased in the α-MSH-induced zebrafish model after IPA and IOE treatment. Furthermore, Western blotting results revealed that IPA upregulated the extracellular related protein expression in α-MSH-stimulated B16F10 cells. Hence, these results suggest that IPA isolated from IOE has a potential for use in the pharmaceutical and cosmetic industries.
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Affiliation(s)
- Xining Li
- Department of Marine Life Sciences, Jeju National University, Jeju 63243, Korea; (X.L.); (H.-W.Y.); (Y.J.); (J.-Y.O.)
| | - Hye-Won Yang
- Department of Marine Life Sciences, Jeju National University, Jeju 63243, Korea; (X.L.); (H.-W.Y.); (Y.J.); (J.-Y.O.)
| | - Yunfei Jiang
- Department of Marine Life Sciences, Jeju National University, Jeju 63243, Korea; (X.L.); (H.-W.Y.); (Y.J.); (J.-Y.O.)
| | - Jae-Young Oh
- Department of Marine Life Sciences, Jeju National University, Jeju 63243, Korea; (X.L.); (H.-W.Y.); (Y.J.); (J.-Y.O.)
| | - You-Jin Jeon
- Department of Marine Life Sciences, Jeju National University, Jeju 63243, Korea; (X.L.); (H.-W.Y.); (Y.J.); (J.-Y.O.)
- Marine Science Institute, Jeju National University, Jeju 63333, Korea
| | - Bomi Ryu
- Department of Marine Life Sciences, Jeju National University, Jeju 63243, Korea; (X.L.); (H.-W.Y.); (Y.J.); (J.-Y.O.)
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