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Liang F. Inhibition mechanism investigation of quercetagetin as a potential tyrosinase inhibitor. Front Chem 2024; 12:1411801. [PMID: 38894729 PMCID: PMC11184945 DOI: 10.3389/fchem.2024.1411801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Accepted: 05/16/2024] [Indexed: 06/21/2024] Open
Abstract
Tyrosinase is one important rate limiting enzyme in melanin synthesis, directly affecting the melanin synthesis. Quercetagetin is one active ingredient from marigold. Thence, the inhibition effects of quercetagetin against tyrosinase were investigated. The results showed quercetagetin could inhibit tyrosinase activity with IC50 value of 0.19 ± 0.01 mM and the inhibition type was a reversible mixed-type. Results of fluorescence quenching showed quercetagetin could quench tyrosinase fluorescence in static process. CD and 3D fluorescence results showed the interaction of quercetagetin to tyrosinase could change tyrosinase conformation to inhibit activity. Moreover, docking revealed details of quercetagetin's interactions with tyrosinase.
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Affiliation(s)
- Faliang Liang
- Pharmacy Department, Jiang Men Maternity and Child Healthcare Hospital, Jiangmen, China
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2
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Amin N, Singh VK, Kannaujiya VK. Mycosporine-Like Amino Acids as a Potential Inhibitor of Tyrosinase-Related Protein 1: Computational Screening, Pharmacokinetics, and Molecular Dynamics Simulation. Mol Biotechnol 2024:10.1007/s12033-024-01153-2. [PMID: 38652428 DOI: 10.1007/s12033-024-01153-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 03/24/2024] [Indexed: 04/25/2024]
Abstract
Melanin is the major pigment responsible for the coloring of mammalian skin, hair, and eyes to defend against ultraviolet radiation. However, excessive melanin production has resulted in numerous types of hyperpigmentation disorders. Tyrosinase-related protein 1 (TYRP1) is a transmembrane glycoprotein enzyme found in many organisms, including humans, that plays an important role in melanogenesis. Thus, controlling the enzyme activity of TYRP1 with tyrosinase inhibitors is a vital step in the treatment of hyperpigmentation problems in humans. In the present investigation, virtual screening, pharmacokinetics, drug docking, and molecular dynamics (MD) simulation were used to find the most potent drug as an inhibitor of TYRP1 to effectively treat hyperpigmentation disorder. The 3D structure of TYRP1 was retrieved from the Protein Data Bank (PDB) database (PDB ID: 5M8M) and validated by the Ramachandran plot. Pharmacokinetics and drug-likeness showed that mycosporine 2 glycine (M2G) and shinorine (SHI) were the best compounds over other ligands in the same (P-1) structural pose. However, MD simulations of the M2G showed the highest CDOCKER interaction energy (-45.182 kcal/mol) and binding affinity (-65.0529 kcal/mol) as compared to SHI and reference drugs. The molecular binding modes RMSD and RMSF plots have exhibited more relevance to the M2G ligand in comparison to other drug ligands. The bioactivity and ligand efficiency profiles revealed that M2G is the most effective compound as a TYRP1 inhibitor. Thus, M2G could be used as a most effective drug for developing valuable sunscreen products to cure hyperpigmentation-related diseases.
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Affiliation(s)
- Nasreen Amin
- Department of Botany, MMV, Banaras Hindu University, Varanasi, 221005, India
| | - Vinay K Singh
- Centre for Bioinformatics, School of Biotechnology, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Vinod K Kannaujiya
- Department of Botany, MMV, Banaras Hindu University, Varanasi, 221005, India.
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Kausar R, Zahoor AF, Tabassum H, Kamal S, Ahmad Bhat M. Synergistic Biomedical Potential and Molecular Docking Analyses of Coumarin-Triazole Hybrids as Tyrosinase Inhibitors: Design, Synthesis, In Vitro Profiling, and In Silico Studies. Pharmaceuticals (Basel) 2024; 17:532. [PMID: 38675492 PMCID: PMC11054269 DOI: 10.3390/ph17040532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Revised: 04/09/2024] [Accepted: 04/15/2024] [Indexed: 04/28/2024] Open
Abstract
The tyrosinase enzyme has a vital role in the browning of vegetables and fruits and the biosynthesis of melanin. In this work, we synthesized a diverse library of coumarin-triazole hybrids, and these compounds were characterized by using suitable analytical techniques. Our research work extends beyond the synthetic effort to explore the therapeutic potential of these compounds. We put the synthesized compounds through meticulous in vitro screening against the tyrosinase enzyme, and these coumarin derivatives evinced good IC50 values in the range of 0.339 ± 0.25 µM to 14.06 ± 0.92 µM. In the library of synthesized compounds, six compounds were found to be more potent than standard ascorbic acid (IC50 = 11.5 ± 1.00), and among them, 17e and 17f, being the most active, exhibited remarkable anti-tyrosinase potential, with IC50 values of 0.339 ± 0.25 μM and 3.148 ± 0.23 μM, respectively. Furthermore, an in silico modeling study was carried out to determine the key interactions of these compounds with the tyrosinase protein (PDB ID: 2Y9X) and thus to authenticate our experimental findings. The quantitative SAR studies exhibited a good correlation between the synthesized derivatives of coumarin and their anti-tyrosinase activity. The docking studies verified the experimental results, and ligand 17e showed good interaction with the core residues of tyrosinase. This study not only expands the field of coumarin-triazole hybrid synthesis but also provides valuable insights for the development of novel tyrosinase inhibitors.
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Affiliation(s)
- Rukhsana Kausar
- Department of Chemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan;
| | - Ameer Fawad Zahoor
- Department of Chemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan;
| | - Hina Tabassum
- Department of Pharmacology, London Metropolitan University, 166-220 Holloway Road, London N7 8DB, UK
| | - Shagufta Kamal
- Department of Biochemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan;
| | - Mashooq Ahmad Bhat
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
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Sanjaya SS, Park MH, Karunarathne WAHM, Lee KT, Choi YH, Kang CH, Lee MH, Jung MJ, Ryu HW, Kim GY. Inhibition of α-melanocyte-stimulating hormone-induced melanogenesis and molecular mechanisms by polyphenol-enriched fraction of Tagetes erecta L. flower. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 126:155442. [PMID: 38394730 DOI: 10.1016/j.phymed.2024.155442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 01/30/2024] [Accepted: 02/08/2024] [Indexed: 02/25/2024]
Abstract
BACKGROUND The pursuit for safe and efficacious skin-whitening agents has prompted a dedicated exploration of plant-derived compounds. Notably, Tagetes erecta L. flowers have been used as a medicinal extract and possessed in vitro mushroom tyrosinase activity. However, whether polyphenol-enriched fraction extracted from T. erecta L. flowers (TE) regulates melanogenesis within cellular and animal models has not yet been investigated. PURPOSE This study aimed to investigate the effect of TE as a prospective inhibitor of melanogenesis. METHODS Through advanced UPLC-QTof/MS analysis, the components of TE were analyzed. Anti-melanogenic effects of TE were evaluated in α-melanocyte-stimulating hormone (α-MSH)-stimulated B16F10 melanoma cells by measuring cell viability assay, extracellular and intracellular melanin biosynthesis, cyclic adenosine monophosphate (cAMP) production, and melanogenesis-related gene and protein expression. Zebrafish larvae were employed for in vivo studies, assessing both heart rate and melanogenesis. Furthermore, molecular docking analyses were employed to predict the interaction between TE components and the melanocortin 1 receptor (MC1R). Direct binding activity of TE components to MC1R was compared with [Nle4, d-Phe7]-MSH (NDP-MSH). RESULTS TE was found to contain significant phenolic compounds such as patulitrin, quercetagetin, kaempferol, patuletin, and isorhamnetin. This study revealed that TE effectively inhibits melanin biosynthesis in both in vitro and in vivo models. This inhibition was attributed to interference of TE with the cAMP-cAMP response element-binding protein (CREB)-microphthalmia-associated transcription factor (MITF)-tyrosinase pathway, which plays a pivotal role in regulating melanogenesis. Importantly, TE exhibited the remarkable ability to curtail α-MSH-induced melanogenesis in zebrafish larvae without impacting heart rates. Molecular docking analyses predicted that the components of TE possibly interact with the melanocortin 1 receptor, suggesting their role as potential inhibitors of melanin biosynthesis. However, through the direct binding activity compared with NDP-MSH, any TE components did not directly bind to MC1R, suggesting that TE inhibits α-MSH-induced melanogenesis by inhibiting the cAMP-mediated intracellular signaling pathway. The assessment of anti-melanogenic activity, conducted both in vitro and in vivo, revealed that patulitrin and patuletin exhibited significant inhibitory effects on melanin formation, highlighting their potency as major contributors. DISCUSSION This investigation demonstrated the considerable potential of TE as a natural remedy endowed with remarkable anti-melanogenic properties. The demonstrated capacity of TE to attenuate melanin production by modulating the cAMP-CREB-MITF-tyrosinase pathway underscores its central role in management of disorders associated with excessive pigmentation. Importantly, the implications of these findings extend to the cosmetics industry, where TE emerges as a prospective and valuable ingredient for the formulation of skin-whitening products. The elucidated interactions between TE components and MC1R not only provide insight into a potential mechanism of action but also elevate the significance of this study. In summary, this study not only contributes to our comprehension of pigmentation-related conditions but also firmly establishes TE as a secure and natural strategy for the regulation of melanin production. The innovative aspects of TE propel it into the forefront of potential interventions, marking a noteworthy advancement in the pursuit of effective and safe solutions for pigmentation disorders.
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Affiliation(s)
| | - Mi Hyeon Park
- Natural Product Research Center, Korea Research Institute of Bioscience and Biotechnology, Cheongju 28116, Republic of Korea
| | | | - Kyoung Tae Lee
- Forest Bioresources Department, Forest Microbiology Division, National Institute of Forest Science, Suwon 16631, Republic of Korea
| | - Yung Hyun Choi
- Department of Biochemistry, College of Korean Medicine, Dong-Eui University, Busan 47227, Republic of Korea
| | - Chang-Hee Kang
- Nakdonggang National Institute of Biological Resources, Sangju 37242, Republic of Korea
| | - Mi-Haw Lee
- Nakdonggang National Institute of Biological Resources, Sangju 37242, Republic of Korea
| | - Min-Jeong Jung
- GENE & BIO, 145 Sindae-ro, Jeju 63134, Republic of Korea
| | - Hyung Won Ryu
- Natural Product Research Center, Korea Research Institute of Bioscience and Biotechnology, Cheongju 28116, Republic of Korea.
| | - Gi-Young Kim
- Department of Marine Life Science, Jeju National University, Jeju 63243, Republic of Korea.
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Min X, Lu L, Xu X, Wen Y, Zheng X. Investigation on the inhibition mechanism and binding behavior of paeonol to tyrosinase and its anti-browning property by multi-spectroscopic and molecular docking methods. Int J Biol Macromol 2023; 253:126962. [PMID: 37722636 DOI: 10.1016/j.ijbiomac.2023.126962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 09/12/2023] [Accepted: 09/15/2023] [Indexed: 09/20/2023]
Abstract
Paeonol, as one effective tyrosinase inhibitor, had been used as food preservative and clinical medication for skin disorders. In this study, the inhibition mechanism and binding behavior of paeonol to tyrosinase and its anti-browning property were investigated using multi-spectroscopic and molecular docking methods. Activity assay and kinetic results confirmed paeonol as a reversible mixed-type tyrosinase inhibitor. Results of the mechanistic studies were clarified using fluorescence quenching, synchronous fluorescence, CD spectra and 3D fluorescence, and showed that the binding of paeonol to tyrosinase might change the chromophore microenvironment and conformation of tyrosinase to inhibit enzyme catalytic activity. Molecular docking results revealed the detailed binding between paeonol and tyrosinase. Moreover, paeonol could prevent the browning of fresh-cut apples, as well as inhibiting PPO and POD activities and increasing APX activity. All above findings established a reliable basis for the inhibitory mechanism of paeonol against tyrosinase and therefore contributed to its application in anti-browning.
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Affiliation(s)
- Xiaofeng Min
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Li Lu
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Xuetao Xu
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China.
| | - Yi Wen
- Department of Pharmacy, Zhongshan City People's Hospital, Zhongshan 825403, China.
| | - Xi Zheng
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China.
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He J, Chen W, Chen X, Xie Y, Zhao Y, Tian T, Guo B, Cai X. Tetrahedral framework nucleic acid loaded with glabridin: A transdermal delivery system applicated to anti-hyperpigmentation. Cell Prolif 2023; 56:e13495. [PMID: 37132449 PMCID: PMC10693180 DOI: 10.1111/cpr.13495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 04/20/2023] [Accepted: 04/25/2023] [Indexed: 05/04/2023] Open
Abstract
Topical application of tyrosinase inhibitors, such as hydroquinone and arbutin, is the most common clinical treatment for hyperpigmentation. Glabridin (Gla) is a natural isoflavone that inhibits tyrosinase activity, free radical scavenging, and antioxidation. However, its water solubility is poor, and it cannot pass through the human skin barrier alone. Tetrahedral framework nucleic acid (tFNA), a new type of DNA biomaterial, can penetrate cells and tissues and can be used as carriers to deliver small-molecule drugs, polypeptides, and oligonucleotides. This study aimed to develop a compound drug system using tFNA as the carrier to transport Gla and deliver it through the skin to treat pigmentation. Furthermore, we aimed to explore whether tFNA-Gla can effectively alleviate the hyperpigmentation caused by increased melanin production and determine whether tFNA-Gla exerts substantial synergistic effects during treatment. Our results showed that the developed system successfully treated pigmentation by inhibiting regulatory proteins related to melanin production. Furthermore, our findings showed that the system was effective in treating epidermal and superficial dermal diseases. The tFNA-based transdermal drug delivery system can thus develop into novel, effective options for non-invasive drug delivery through the skin barrier.
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Affiliation(s)
- Jiajun He
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of StomatologySichuan UniversityChengduChina
| | - Wen Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of StomatologySichuan UniversityChengduChina
| | - Xingyu Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of StomatologySichuan UniversityChengduChina
| | - Yu Xie
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of StomatologySichuan UniversityChengduChina
| | - Yuxuan Zhao
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of StomatologySichuan UniversityChengduChina
| | - Taoran Tian
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of StomatologySichuan UniversityChengduChina
| | - Bin Guo
- Department of StomatologyFirst Medical Center of Chinese PLA General HospitalBeijingChina
| | - Xiaoxiao Cai
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of StomatologySichuan UniversityChengduChina
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Chatatikun M, Tedasen A, Pattaranggoon NC, Palachum W, Chuaijit S, Mudpan A, Pruksaphanrat S, Sohbenalee S, Yamasaki K, Klangbud WK. Antioxidant activity, anti-tyrosinase activity, molecular docking studies, and molecular dynamic simulation of active compounds found in nipa palm vinegar. PeerJ 2023; 11:e16494. [PMID: 38025738 PMCID: PMC10680452 DOI: 10.7717/peerj.16494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 10/30/2023] [Indexed: 12/01/2023] Open
Abstract
Tyrosinase is a key enzyme in melanogenesis and its inhibitors have become increasingly because of their potential activity as hypopigmenting agents which have less side effects. Nipa palm vinegar is an aqueous product that is normally used as a food supplement. The aim of this study was to study the determination of antioxidant activity and tyrosinase inhibitory activities of aqueous extract of original nipa palm vinegar (AE O-NPV), nipa palm vinegar powder (NPV-P) and aqueous extract of nipa palm vinegar powder (AE NPV-P) were examined. Nipa palm vinegars were evaluated the phenolic and flavonoid content, and the active compounds which were submitted to molecular docking and molecular dynamic simulation, chemoinformatics, rule of five, skin absorption and toxicity. The highest phenolic and flavonoid contents in the AE O-NPV were 2.36 ± 0.23 mg gallic acid equivalents/g extract and 5.11 ± 0.59 mg quercetin equivalents/g, and the highest ABTS radical cation scavenging activity was also found. The AE O-NPV, NPV-P and AE NPV-P showed anti-mushroom tyrosinase activity. The HPLC analysis showed that there were vanillic acid and three flavonoids (catechin, rutin and quercetin). The molecular docking study revealed that the binding of the vanillic acid and three flavonoids occurred in the active site residues (histidine and other amino acids). Moreover, the number of hydrogen bond acceptors/donors, solubility, polar surface area and bioavailability score of the vanillic acid and three flavonoids were acceptable compared to Lipinski's Rule of Five. The molecular dynamic simulation showed that vanillic acid interacts with HIS284 through π-π stacking hydrophobic interactions and forms a metal-acceptor interaction with the copper molecule at the tyrosinase active site. All compounds revealed good skin permeability and nontoxicity. Nipa palm vinegar could be a promising source of a new ingredient for tyrosinase inhibition for cosmetics or pharmaceutical products.
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Affiliation(s)
- Moragot Chatatikun
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Thasala, Nakhon Si Thammarat, Thailand
- Center of Excellence Research of Melioidosis and Microorganisms, Walailak University, Thasala, Nakhon Si Thammarat, Thailand
| | - Aman Tedasen
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Thasala, Nakhon Si Thammarat, Thailand
- Research Excellence Center of Innovation and Health Products, Walailak University, Thasala, Nakhon Si Thammarat, Thailand
| | - Nawanwat Chainuwong Pattaranggoon
- Program in Bioinformatics and Computational Biology, Chulalongkorn University, Bangkok, Thailand
- Faculty of Medical Technology, Rangsit University, Muang Pathumthani, Pathumthani, Thailand
| | - Wilawan Palachum
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Thasala, Nakhon Si Thammarat, Thailand
- Center of Excellence Research of Melioidosis and Microorganisms, Walailak University, Thasala, Nakhon Si Thammarat, Thailand
| | - Sirithip Chuaijit
- School of Medicine, Walailak University, Thasala, Nakhon Si Thammarat, Thailand
| | - Amron Mudpan
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Thasala, Nakhon Si Thammarat, Thailand
| | - Supawita Pruksaphanrat
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Thasala, Nakhon Si Thammarat, Thailand
| | - Sasirat Sohbenalee
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Thasala, Nakhon Si Thammarat, Thailand
| | - Kenshi Yamasaki
- Department of Dermatology, Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - Wiyada Kwanhian Klangbud
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Thasala, Nakhon Si Thammarat, Thailand
- Center of Excellence Research of Melioidosis and Microorganisms, Walailak University, Thasala, Nakhon Si Thammarat, Thailand
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Ghasemi N, Moradi S, Iraji A, Mahdavi M. Thiazolopyrimidine derivatives as novel class of small molecule tyrosinase inhibitor. BMC Chem 2023; 17:156. [PMID: 37981674 PMCID: PMC10658973 DOI: 10.1186/s13065-023-01077-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 11/06/2023] [Indexed: 11/21/2023] Open
Abstract
Tyrosinase, the rate-limiting enzyme of melanogenesis, plays a crucial role in hyperpigmentation. As a result, in this study, a novel class of thiazolopyrimidine derivatives was developed and synthesized as tyrosinase inhibitor. The structure of derivatives was characterized using various spectroscopy techniques, including FTIR, Mass, 1H-NMR, and 13C-NMR. Next, the inhibitory activities of all derivatives were examined against tyrosinase, and, 6a as the most potent compound, exhibited an IC50 value of 28.50 µM. Furthermore, the kinetic study of 6a was performed to better understand the inhibitory mechanism and its type of inhibition. The UV/Vis spectra analysis was also executed to provide valuable evidence supporting the inhibitory mechanism of compound 6a in the context of tyrosinase inhibition. Also, molecular docking and dynamic molecular study of 6a were executed to study its interactions within the enzyme's binding site.
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Affiliation(s)
- Nastaran Ghasemi
- Faculty of Chemistry, Tehran North Branch, Islamic Azad University, Tehran, Iran
| | - Shahram Moradi
- Faculty of Chemistry, Tehran North Branch, Islamic Azad University, Tehran, Iran
| | - Aida Iraji
- Stem Cells Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
- Research Center for Traditional Medicine and History of Medicine, Department of Persian Medicine, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.
| | - Mohammad Mahdavi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
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Lu L, Hu C, Min X, Liu Z, Xu X, Gan L. In Vitro and In Vivo Biological Evaluation of Indole-thiazolidine-2,4-dione Derivatives as Tyrosinase Inhibitors. Molecules 2023; 28:7470. [PMID: 38005192 PMCID: PMC10673563 DOI: 10.3390/molecules28227470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 10/30/2023] [Accepted: 11/02/2023] [Indexed: 11/26/2023] Open
Abstract
Tyrosinase is an important rate-limiting enzyme in melanin biosynthesis. To find potential tyrosinase inhibitors with anti-melanogenic activity, a series of indole-thiazolidine-2,4-dione derivatives 5a~5z were synthesized by incorporating indole with thiazolidine-2,4-dione into one compound and assayed for their biological activities. All compounds displayed tyrosinase inhibitory activities and 5w had the highest anti-tyrosinase inhibitory activity with an IC50 value of 11.2 μM. Inhibition kinetics revealed 5w as a mixed-type tyrosinase inhibitor. Fluorescence quenching results indicated that 5w quenched tyrosinase fluorescence in a static process. CD spectra and 3D fluorescence spectra results suggested that the binding of 5w with tyrosinase could change the conformation and microenvironment of tyrosinase. Molecular docking also represented the binding between 5w and tyrosinase. Moreover, 5w could inhibit tyrosinase activity and melanogenesis both in B16F10 cells and the zebrafish model. Therefore, compound 5w could serve as a tyrosinase inhibitor with anti-melanogenic activity.
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Affiliation(s)
- Li Lu
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China; (L.L.); (C.H.); (X.M.)
| | - Chunmei Hu
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China; (L.L.); (C.H.); (X.M.)
| | - Xiaofeng Min
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China; (L.L.); (C.H.); (X.M.)
| | - Zhong Liu
- College of Life Science and Technology, Jinan University, Guangzhou 510632, China;
| | - Xuetao Xu
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China; (L.L.); (C.H.); (X.M.)
| | - Lishe Gan
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China; (L.L.); (C.H.); (X.M.)
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10
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Liu J, Xu X, Zhou J, Sun G, Li Z, Zhai L, Wang J, Ma R, Zhao D, Jiang R, Sun L. Phenolic acids in Panax ginseng inhibit melanin production through bidirectional regulation of melanin synthase transcription via different signaling pathways. J Ginseng Res 2023; 47:714-725. [PMID: 38107393 PMCID: PMC10721457 DOI: 10.1016/j.jgr.2023.05.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 05/17/2023] [Accepted: 05/19/2023] [Indexed: 12/19/2023] Open
Abstract
Background Our previous investigation indicated that the preparation of Panax ginseng Meyer (P. ginseng) inhibited melanogenesis. It comprised salicylic acid (SA), protocatechuic acid (PA), p-coumaric acid (p-CA), vanillic acid (VA), and caffeic acid (CA). In this investigation, the regulatory effects of P. ginseng phenolic acid monomers on melanin production were assessed. Methods In vitro and in vivo impact of phenolic acid monomers were assessed. Results SA, PA, p-CA and VA inhibited tyrosinase (TYR) to reduce melanin production, whereas CA had the opposite effects. SA, PA, p-CA and VA significantly downregulated the melanocortin 1 receptor (MC1R), cycle AMP (cAMP), protein kinase A (PKA), cycle AMP-response element-binding protein (CREB), microphthalmia-associated transcription factor (MITF) pathway, reducing mRNA and protein levels of TYR, tyrosinase-related protein 1 (TYRP1), and TYRP2. Moreover, CA treatment enhanced the cAMP, PKA, and CREB pathways to promote MITF mRNA level and phosphorylation. It also alleviated MITF protein level in α-MSH-stimulated B16F10 cells, comparable to untreated B16F10, increasing the expression of phosphorylation glycogen synthase kinase 3β (p-GSK3β), β-catenin, p-ERK/ERK, and p-p38/p38. Furthermore, the GSK3β inhibitor promoted p-GSK3β and p-MITF expression, as observed in CA-treated cells. Moreover, p38 and ERK inhibitors inhibited CA-stimulated p-p38/p38, p-ERK/ERK, and p-MITF increase, which had negative binding energies with MC1R, as depicted by molecular docking. Conclusion P. ginseng roots' phenolic acid monomers can safely inhibit melanin production by bidirectionally regulating melanin synthase transcription. Furthermore, they reduced MITF expression via MC1R/cAMP/PKA signaling pathway and enhanced MITF post-translational modification via Wnt/mitogen-activated protein kinase signaling pathway.
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Affiliation(s)
- Jianzeng Liu
- Northeast Asian Institute of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, China
| | - Xiaohao Xu
- Northeast Asian Institute of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, China
- Research Center of Traditional Chinese Medicine, the Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, China
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, China
| | - Jingyuan Zhou
- Research Center of Traditional Chinese Medicine, the Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, China
| | - Guang Sun
- Research Center of Traditional Chinese Medicine, the Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, China
| | - Zhenzhuo Li
- Research Center of Traditional Chinese Medicine, the Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, China
| | - Lu Zhai
- Research Center of Traditional Chinese Medicine, the Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, China
| | - Jing Wang
- Research Center of Traditional Chinese Medicine, the Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, China
| | - Rui Ma
- Research Center of Traditional Chinese Medicine, the Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, China
| | - Daqing Zhao
- Northeast Asian Institute of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, China
| | - Rui Jiang
- Research Center of Traditional Chinese Medicine, the Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, China
- Key Laboratory of Active Substances and Biological Mechanisms of Ginseng Efficacy, Ministry of Education, Changchun, China
| | - Liwei Sun
- Research Center of Traditional Chinese Medicine, the Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, China
- Key Laboratory of Active Substances and Biological Mechanisms of Ginseng Efficacy, Ministry of Education, Changchun, China
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11
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Lazarova I, Zengin G, Piatti D, Uba AI, Sagratini G, Caprioli G, Emre G, Ponniya SKM, Rengasamy KR, Paradis NJ, Koyuncu I, Şeker F, Wu C, Nilofar, Flores GA, Cusumano G, Angelini P, Venanzoni R. Appraisals on the chemical characterization and biological potentials of Ranunculus constantinopolitanus extracts using chromatographic, computational, and molecular network approaches. Food Chem Toxicol 2023; 181:114064. [PMID: 37793470 DOI: 10.1016/j.fct.2023.114064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 09/21/2023] [Accepted: 09/25/2023] [Indexed: 10/06/2023]
Abstract
In this context, phytochemicals were extracted from Ranunculus constantinopolitanus using ethyl acetate (EA), ethanol, ethanol/water (70%), and water solvent. The analysis encompassed quantification of total phenolic and flavonoid content using spectrophotometric assays, chemical profiling via high performance liquid chromatography-mass spectrometry/mass spectrometry (HPLC-MS/MS) for the extracts, and assessment of antioxidant activity via 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid (ABTS), Cupric reducing antioxidant capacity (CUPRAC), ferric reducing antioxidant power (FRAP), metal chelating (MCA), and phosphomolybdenum (PBD) assays. Moreover, antimicrobial activity was assessed against four different bacterial strains, as well as various yeasts. Enzyme inhibitory activities were evaluated against five types of enzymes. Additionally, the extracts were examined for their anticancer and protective effects on several cancer cell lines and the human normal cell line. All of the extracts exhibited significant levels of ferulic acid, kaempferol, and caffeic acid. All tested extracts demonstrated antimicrobial activity, with Escherichia coli and Pseudomonas aeruginosa being most sensitive to EA and ethanol extracts. Molecular docking studies revealed that kaempferol-3-O-glucoside strong interactions with AChE, BChE and tyrosinase. In addition, network pharmacology showed an association between gastric cancer and kaempferol-3-O-glucoside. Based on the results, R. constantinopolitanus can be a potential reservoir of bioactive compounds for future bioproduct innovation and pharmaceutical industries.
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Affiliation(s)
- Irina Lazarova
- Department of Chemistry, Faculty of Pharmacy, Medical University-Sofia, 2, Dunav Str., 1000 Sofia, Bulgaria
| | - Gokhan Zengin
- Physiology and Biochemistry Research Laboratory, Department of Biology, Science Faculty, Selcuk University, Konya, Turkey.
| | - Diletta Piatti
- CHemistry Interdisciplinary Project (CHip), School of Pharmacy, University of Camerino, Via Madonna delle Carceri, 62032 Camerino, Italy
| | - Abdullahi Ibrahim Uba
- Department of Molecular Biology and Genetics, Istanbul AREL University, Istanbul 34537, Turkey
| | - Gianni Sagratini
- CHemistry Interdisciplinary Project (CHip), School of Pharmacy, University of Camerino, Via Madonna delle Carceri, 62032 Camerino, Italy
| | - Giovanni Caprioli
- CHemistry Interdisciplinary Project (CHip), School of Pharmacy, University of Camerino, Via Madonna delle Carceri, 62032 Camerino, Italy
| | - Gizem Emre
- Department of Pharmaceutical Botany, Pharmacy Faculty, Marmara University, Istanbul, Turkey
| | - Sathish Kumar M Ponniya
- Laboratory of Natural Products and Medicinal Chemistry (LNPMC), Department of Pharmacology, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, 600077, India
| | - Kannan Rr Rengasamy
- Laboratory of Natural Products and Medicinal Chemistry (LNPMC), Department of Pharmacology, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, 600077, India
| | | | - Ismail Koyuncu
- Department of Medical Biochemistry, Faculty of Medicine, Harran University, Sanliurfa 63290, Turkey
| | - Fatma Şeker
- Department of Biology, Science Arts Faculty, Harran University, Sanliurfa, Turkey
| | - Chun Wu
- College of Science and Mathematics, Rowan University, Glassboro, NJ 08028, USA
| | - Nilofar
- Physiology and Biochemistry Research Laboratory, Department of Biology, Science Faculty, Selcuk University, Konya, Turkey; Department of Pharmacy, Botanic Garden "Giardino dei Semplici", "Gabriele d'Annunzio" University, 66100 Chieti, Italy
| | - Giancarlo Angeles Flores
- Department of Pharmacy, Botanic Garden "Giardino dei Semplici", "Gabriele d'Annunzio" University, 66100 Chieti, Italy
| | - Gaia Cusumano
- Department of Chemistry, Biology and Biotechnology, University of Perugia, 06122 Perugia (PG), Italy
| | - Paola Angelini
- Department of Chemistry, Biology and Biotechnology, University of Perugia, 06122 Perugia (PG), Italy
| | - Roberto Venanzoni
- Department of Chemistry, Biology and Biotechnology, University of Perugia, 06122 Perugia (PG), Italy
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12
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In KR, Kang MA, Kim SD, Shin J, Kang SU, Park TJ, Kim SJ, Lee JS. Anhydrous Alum Inhibits α-MSH-Induced Melanogenesis by Down-Regulating MITF via Dual Modulation of CREB and ERK. Int J Mol Sci 2023; 24:14662. [PMID: 37834109 PMCID: PMC10572554 DOI: 10.3390/ijms241914662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 09/26/2023] [Accepted: 09/26/2023] [Indexed: 10/15/2023] Open
Abstract
Melanogenesis, the intricate process of melanin synthesis, is central to skin pigmentation and photoprotection and is regulated by various signaling pathways and transcription factors. To develop potential skin-whitening agents, we used B16F1 melanoma cells to investigate the inhibitory effects of anhydrous alum on melanogenesis and its underlying molecular mechanisms. Anhydrous alum (KAl(SO4)2) with high purity (>99%), which is generated through the heat-treatment of hydrated alum (KAl(SO4)2·12H2O) at 400 °C, potentiates a significant reduction in melanin content without cytotoxicity. Anhydrous alum downregulates the master regulator of melanogenesis, microphthalmia-associated transcription factor (MITF), which targets key genes involved in melanogenesis, thereby inhibiting α-melanocyte-stimulating hormone (α-MSH)-induced melanogenesis. Phosphorylation of the cAMP response element-binding protein, which acts as a co-activator of MITF gene expression, is attenuated by anhydrous alum, resulting in compromised MITF transcription. Notably, anhydrous alum promoted extracellular signal-regulated kinase phosphorylation, leading to the impaired nuclear localization of MITF. Overall, these results demonstrated the generation and mode of action of anhydrous alum in B16F1 cells, which constitutes a promising option for cosmetic or therapeutic use.
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Affiliation(s)
- Kyu-Ree In
- Department of Life Sciences, College of Natural Sciences, Ajou University, Suwon 16499, Republic of Korea
| | - Mi Ae Kang
- Department of Life Sciences, College of Natural Sciences, Ajou University, Suwon 16499, Republic of Korea
- Research Institute of Basic Sciences, Ajou University, Suwon 16499, Republic of Korea
| | - Su Dong Kim
- Graduate School of Clinical Pharmacy and Pharmaceutics, Ajou University, Suwon 16499, Republic of Korea
| | - Jinho Shin
- Department of Chemistry, College of Natural Sciences, Ajou University, Suwon 16499, Republic of Korea
| | - Sung Un Kang
- Department of Otolaryngology, School of Medicine, Ajou University, Suwon 16499, Republic of Korea
| | - Tae Jun Park
- Department of Biomedical Science, The Graduate School, Ajou University, Suwon 16499, Republic of Korea
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon 16499, Republic of Korea
| | - Seung-Joo Kim
- Research Institute of Basic Sciences, Ajou University, Suwon 16499, Republic of Korea
- Department of Chemistry, College of Natural Sciences, Ajou University, Suwon 16499, Republic of Korea
| | - Jong-Soo Lee
- Department of Life Sciences, College of Natural Sciences, Ajou University, Suwon 16499, Republic of Korea
- Research Institute of Basic Sciences, Ajou University, Suwon 16499, Republic of Korea
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13
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Kurt-Celep İ, Zengin G, Uba AI, Caprioli G, Mustafa AM, Angeloni S, Cakilcioglu U, Guler O, Kaplan A, Sharmeen J, Mahomoodally MF. Unraveling the chemical profile, antioxidant, enzyme inhibitory, cytotoxic potential of different extracts from Astragalus caraganae. Arch Pharm (Weinheim) 2023; 356:e2300263. [PMID: 37434089 DOI: 10.1002/ardp.202300263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/21/2023] [Accepted: 06/22/2023] [Indexed: 07/13/2023]
Abstract
Six extracts (water, ethanol, ethanol-water, ethyl acetate, dichloromethane, and n-hexane) of Astragalus caraganae were studied for their biological activities and bioactive contents. Based on high-performance liquid chromatography-mass spectrometry (HPLC-MS), the ethanol-water extract yielded the highest total bioactive content (4242.90 µg g-1 ), followed by the ethanol and water extracts (3721.24 and 3661.37 µg g-1 , respectively), while the least total bioactive content was yielded by the hexane extract, followed by the dichloromethane and ethyl acetate extracts (47.44, 274.68, and 688.89 µg g-1 , respectively). Rutin, p-coumaric, chlorogenic, isoquercitrin, and delphindin-3,5-diglucoside were among the major components. Unlike the dichloromethane extracts, all the other extracts showed radical scavenging ability in the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay (8.73-52.11 mg Trolox equivalent [TE]/g), while all extracts displayed scavenging property in the 2,2-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS) radical scavenging assay (16.18-282.74 mg TE/g). The extracts showed antiacetylcholinesterase (1.27-2.73 mg galantamine equivalent [GALAE]/g), antibutyrylcholinesterase (0.20-5.57 mg GALAE/g) and antityrosinase (9.37-63.56 mg kojic acid equivalent [KAE]/g) effects. The molecular mechanism of the H2 O2 -induced oxidative stress pathway was aimed to be elucidated by applying ethanol, ethanol/water and water extracts at 200 µg/mL concentration to human dermal cells (HDFs). A. caraganae in HDF cells had neither a cytotoxic nor genotoxic effect but could have a cytostatic effect in increasing concentrations. The findings have allowed a better insight into the pharmacological potential of the plant, with respect to their chemical entities and bioactive contents, as well as extraction solvents and their polarity.
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Affiliation(s)
- İnci Kurt-Celep
- Faculty of Pharmacy, Department of Pharmacognosy, Ataşehir, Acıbadem Mehmet Ali Aydınlar University, İstanbul, Turkey
| | - Gokhan Zengin
- Department of Biology, Science Faculty, Selcuk University, Konya, Turkey
| | - Abdullahi I Uba
- Department of Molecular Biology and Genetics, Istanbul AREL University, Istanbul, Turkey
| | | | | | | | - Ugur Cakilcioglu
- Pertek Sakine Genç Vocational School, Munzur University, Pertek, Turkey
| | - Osman Guler
- Pertek Sakine Genç Vocational School, Munzur University, Pertek, Turkey
| | - Alevcan Kaplan
- Sason Vocational School, Batman University, Batman, Turkey
| | - Jugreet Sharmeen
- Department of Health Sciences, Faculty of Medicine and Health Sciences, University of Mauritius, Reduit, Mauritius
| | - Mohamad F Mahomoodally
- Department of Health Sciences, Faculty of Medicine and Health Sciences, University of Mauritius, Reduit, Mauritius
- Department of Pharmacology, Center for Transdisciplinary Research, Saveetha Dental College, Saveetha Institute of Medical and Technical Science, Saveetha University, Chennai, India
- Centre of Excellence for Pharmaceutical Sciences, North-West University, Potchefstroom, South Africa
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14
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Li J, Min X, Zheng X, Wang S, Xu X, Peng J. Synthesis, Anti-Tyrosinase Activity, and Spectroscopic Inhibition Mechanism of Cinnamic Acid-Eugenol Esters. Molecules 2023; 28:5969. [PMID: 37630220 PMCID: PMC10460039 DOI: 10.3390/molecules28165969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 08/02/2023] [Accepted: 08/05/2023] [Indexed: 08/27/2023] Open
Abstract
Tyrosinase plays crucial roles in mediating the production of melanin pigment; thus, its inhibitors could be useful in preventing melanin-related diseases. To find potential tyrosinase inhibitors, a series of cinnamic acid-eugenol esters (c1~c29) was synthesized and their chemical structures were confirmed by 1H NMR, 13C NMR, HRMS, and FT-IR, respectively. The biological evaluation results showed that all compounds c1~c29 exhibited definite tyrosinase inhibitory activity; especially, compound c27 was the strongest tyrosinase inhibitor (IC50: 3.07 ± 0.26 μM), being ~4.6-fold stronger than the positive control, kojic acid (IC50: 14.15 ± 0.46 μM). Inhibition kinetic studies validated compound c27 as a reversible mixed-type inhibitor against tyrosinase. Three-dimensional fluorescence and circular dichroism (CD) spectra results indicated that compound c27 could change the conformation and secondary structure of tyrosinase. Fluorescence-quenching results showed that compound c27 quenched tyrosinase fluorescence in the static manner with one binding site. Molecular docking results also revealed the binding interactions between compound c27 and tyrosinase. Therefore, cinnamic acid-eugenol esters, especially c27, could be used as lead compounds to find potential tyrosinase inhibitors.
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Affiliation(s)
- Jianping Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China (X.Z.)
| | - Xiaofeng Min
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China (X.Z.)
| | - Xi Zheng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China (X.Z.)
| | - Shaohua Wang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China;
| | - Xuetao Xu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China (X.Z.)
| | - Jinbao Peng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China (X.Z.)
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15
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Bae S, Hyun CG. The Effects of 2 '-Hydroxy-3,6 '-Dimethoxychalcone on Melanogenesis and Inflammation. Int J Mol Sci 2023; 24:10393. [PMID: 37373541 DOI: 10.3390/ijms241210393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 06/18/2023] [Accepted: 06/19/2023] [Indexed: 06/29/2023] Open
Abstract
In this study, we demonstrated that 2'-hydroxy-3,6'-dimethoxychalcone (3,6'-DMC) alleviated α-MSH-induced melanogenesis and lipopolysaccharides (LPS)-induced inflammation in mouse B16F10 and RAW 264.7 cells. In vitro analysis results showed that the melanin content and intracellular tyrosinase activity were significantly decreased by 3,6'-DMC, without cytotoxicity, via decreases in tyrosinase and the tyrosinase-related protein 1 (TRP-1) and TRP-2 melanogenic proteins, as well as the downregulation of microphthalmia-associated transcription factor (MITF) expression through the upregulation of the phosphorylation of extracellular-signal-regulated kinase (ERK), phosphoinositide 3-kinase (PI3K)/Akt, and glycogen synthase kinase-3β (GSK-3β)/catenin, and downregulation of the phosphorylation of p38, c-Jun N-terminal kinase (JNK), and protein kinase A (PKA). Furthermore, we investigated the effect of 3,6'-DMC on macrophage RAW264.7 cells with LPS stimulation. 3,6'-DMC significantly inhibited LPS-stimulated nitric oxide production. 3,6'-DMC also suppressed the expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase (COX)-2 on the protein level. In addition, 3,6'-DMC decreased the production of the tumor necrosis factor-α and interleukin-6. Successively, our mechanistic studies revealed that 3,6'-DMC also suppressed the LPS-induced phosphorylation of the inhibitor of IκBα, p38MAPK, ERK, and JNK. The Western blot assay results showed that 3,6'-DMC suppresses LPS-induced p65 translocation from cytosol to the nucleus. Finally, the topical applicability of 3,6'-DMC was tested through primary skin irritation, and it was found that 3,6'-DMC, at 5 and 10 μM concentrations, did not cause any adverse effects. Therefore, 3,6'-DMC may provide a potential candidate for preventing and treating melanogenic and inflammatory skin diseases.
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Affiliation(s)
- Sungmin Bae
- Jeju Inside Agency and Cosmetic Science Center, Department of Chemistry and Cosmetics, Jeju National University, Jeju 63243, Republic of Korea
| | - Chang-Gu Hyun
- Jeju Inside Agency and Cosmetic Science Center, Department of Chemistry and Cosmetics, Jeju National University, Jeju 63243, Republic of Korea
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16
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Mirabile S, Ielo L, Lombardo L, Ricci F, Gitto R, Germanò MP, Pace V, De Luca L. Leveraging the 3-Chloro-4-fluorophenyl Motif to Identify Inhibitors of Tyrosinase from Agaricus bisporus. Int J Mol Sci 2023; 24:ijms24097944. [PMID: 37175649 PMCID: PMC10177926 DOI: 10.3390/ijms24097944] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 04/18/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023] Open
Abstract
Tyrosinase (EC 1.14.18.1) is implicated in melanin production in various organisms. There is a growing body of evidence suggesting that the overproduction of melanin might be related to several skin pigmentation disorders as well as neurodegenerative processes in Parkinson's disease. Based on this consideration, the development of tyrosinase inhibitors represents a new challenge to identify new agents in pharmaceutical and cosmetic applications. With the goal of identifying tyrosinase inhibitors from a synthetic source, we employed a cheap and facile preliminary assay using tyrosinase from Agaricus bisporus (AbTYR). We have previously demonstrated that the 4-fluorobenzyl moiety might be effective in interactions with the catalytic site of AbTYR; moreover, the additional chlorine atom exerted beneficial effects in enhancing inhibitory activity. Therefore, we planned the synthesis of new small compounds in which we incorporated the 3-chloro-4-fluorophenyl fragment into distinct chemotypes that revealed the ability to establish profitable contact with the AbTYR catalytic site. Our results confirmed that the presence of this fragment is an important structural feature to improve the AbTYR inhibition in these new chemotypes as well. Furthermore, docking analysis supported the best activity of the selected studied compounds, possessing higher potency when compared with reference compounds.
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Affiliation(s)
- Salvatore Mirabile
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno D'Alcontres 31, I-98166 Messina, Italy
- Foundation Prof. Antonio Imbesi, University of Messina, Piazza Pugliatti 1, I-98122 Messina, Italy
| | - Laura Ielo
- Department of Chemistry, University of Turin, Via P. Giuria 7, 10125 Torino, Italy
| | - Lisa Lombardo
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno D'Alcontres 31, I-98166 Messina, Italy
| | - Federico Ricci
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno D'Alcontres 31, I-98166 Messina, Italy
| | - Rosaria Gitto
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno D'Alcontres 31, I-98166 Messina, Italy
| | - Maria Paola Germanò
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno D'Alcontres 31, I-98166 Messina, Italy
| | - Vittorio Pace
- Department of Chemistry, University of Turin, Via P. Giuria 7, 10125 Torino, Italy
| | - Laura De Luca
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno D'Alcontres 31, I-98166 Messina, Italy
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