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Tedasen A, Chiabchalard A, Tencomnao T, Yamasaki K, Majima HJ, Phongphithakchai A, Chatatikun M. Anti-Melanogenic Activity of Ethanolic Extract from Garcinia atroviridis Fruits Using In Vitro Experiments, Network Pharmacology, Molecular Docking, and Molecular Dynamics Simulation. Antioxidants (Basel) 2024; 13:713. [PMID: 38929152 PMCID: PMC11200473 DOI: 10.3390/antiox13060713] [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: 05/11/2024] [Revised: 06/09/2024] [Accepted: 06/10/2024] [Indexed: 06/28/2024] Open
Abstract
Melanin, the pigment responsible for human skin color, increases susceptibility to UV radiation, leading to excessive melanin production and hyperpigmentation disorders. This study investigated the ethanolic extract of Garcinia atroviridis fruits for its phenolic and flavonoid contents, antioxidant activity, and impact on melanogenesis pathways using qRT-PCR and Western blot analysis. Utilizing network pharmacology, molecular docking, and dynamics simulations, researchers explored G. atroviridis fruit extract's active compounds, targets, and pharmacological effects on hyperpigmentation. G. atroviridis fruit extract exhibited antioxidant properties, scavenging DPPH• and ABTS•+ radicals radicals and chelating copper. It inhibited cellular tyrosinase activity and melanin content in stimulated B16F10 cells, downregulating TYR, TRP-1, phosphorylated CREB, CREB, and MITF proteins along with transcription levels of MITF, TYR, and TRP-2. LC-MS analysis identified thirty-three metabolites, with seventeen compounds selected for further investigation. Network pharmacology revealed 41 hyperpigmentation-associated genes and identified significant GO terms and KEGG pathways, including cancer-related pathways. Kaempferol-3-O-α-L-rhamnoside exhibited high binding affinity against MAPK3/ERK1, potentially regulating melanogenesis by inhibiting tyrosinase activity. Stable ligand-protein interactions in molecular dynamics simulations supported these findings. Overall, this study suggests that the ethanolic extract of G. atroviridis fruits possesses significant antioxidant, tyrosinase inhibitory, and anti-melanogenic properties mediated through key molecular targets and pathways.
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Affiliation(s)
- Aman Tedasen
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat 80160, Thailand; (A.T.); (H.J.M.)
- Research Excellence Center for Innovation and Health Products (RECIHP), Walailak University, Nakhon Si Thammarat 80160, Thailand
| | - Anchalee Chiabchalard
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand; (A.C.); (T.T.)
- Natural Products for Neuroprotection and Anti-Ageing Research Unit, Chulalongkorn University, Bangkok 10330, Thailand
| | - Tewin Tencomnao
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand; (A.C.); (T.T.)
- Natural Products for Neuroprotection and Anti-Ageing Research Unit, Chulalongkorn University, Bangkok 10330, Thailand
| | - Kenshi Yamasaki
- Department of Dermatology, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan;
| | - Hideyuki J. Majima
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat 80160, Thailand; (A.T.); (H.J.M.)
- Research Excellence Center for Innovation and Health Products (RECIHP), Walailak University, Nakhon Si Thammarat 80160, Thailand
| | - Atthaphong Phongphithakchai
- Division of Nephrology, Department of Internal Medicine, Faculty of Medicine, Prince of Songkla University, Songkhla 90110, Thailand;
| | - Moragot Chatatikun
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat 80160, Thailand; (A.T.); (H.J.M.)
- Center of Excellence Research for Melioidosis and Microorganisms, Walailak University, Nakhon Si Thammarat 80160, Thailand
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Honda S, Matsuda T, Fujimuro M, Sekine Y. Tyrosinase regulates the motility of human melanoma cell line A375 through its hydroxylase enzymatic activity. Biochem Biophys Res Commun 2024; 707:149785. [PMID: 38503150 DOI: 10.1016/j.bbrc.2024.149785] [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: 02/27/2024] [Revised: 03/11/2024] [Accepted: 03/12/2024] [Indexed: 03/21/2024]
Abstract
Melanoma, originating from melanocytes, is a highly aggressive tumor. Tyrosinase is involved in melanin production in melanocytes, and its overexpression is noted in malignant melanomas. However, the role of tyrosinase in melanomas remains unclear. Therefore, this study aimed to evaluate the potential functions of tyrosinase in the human melanoma cell line A375. The expression level of tyrosinase in A375 cells was undetectable. However, markedly increased expression level was observed in the mouse melanoma cell line B16F10 and the human melanoma cell line WM266-4. Subsequently, we investigated the effect of ectopic tyrosinase expression on A375 cell motility using wound-healing assay. The overexpression of tyrosinase resulted in enhanced cell migration in both stable and transient tyrosinase expression cells. The levels of filamentous actin were decreased in tyrosinase-expressing A375 cells, suggesting that tyrosinase regulates cell motility by modulating actin polymerization. Histidine residues in tyrosinase are important for its enzymatic activity for synthesizing melanin. Substitution of these histidine residues to alanine residues mitigated the promotion of tyrosinase-induced A375 cell metastasis. Furthermore, melanin treatment enhanced A375 cell metastasis and phosphorylation of Cofilin. Thus, our findings suggest that tyrosinase increases the migration of A375 cells by regulating actin polymerization through its enzymatic activity.
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Affiliation(s)
- Sachie Honda
- Department of Cell Biology, Kyoto Pharmaceutical University, Kyoto, 607-8412, Japan
| | - Tadashi Matsuda
- Department of Immunology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, 060-0812, Japan
| | - Masahiro Fujimuro
- Department of Cell Biology, Kyoto Pharmaceutical University, Kyoto, 607-8412, Japan
| | - Yuichi Sekine
- Department of Cell Biology, Kyoto Pharmaceutical University, Kyoto, 607-8412, Japan.
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Korkmaz N, Himawan S, Usman M, Baik S, Kim M. Bacteriophage Engineering for Improved Copper Ion Binding. Macromol Biosci 2024; 24:e2300354. [PMID: 37985183 DOI: 10.1002/mabi.202300354] [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: 08/02/2023] [Revised: 10/13/2023] [Indexed: 11/22/2023]
Abstract
In this study, fd viruses are genetically modified to display seven cropped versions (H, HG, HGF, HGFA, HGFAN, HGFANV and HGFANVA) of the previously identified Cu(II) specific peptide (HGFANVA). Atomic force microscopy (AFM) imaging reveals the typical filamentous structures of recombinant phages with thicknesses of ≈2-5 nm in dry state. Scanning electron microscopy (SEM) imaging shows that HGFANVA viruses form larger elongated assemblies than H viruses that are deposited with a mineral layer after Cu(II) treatment. C and N peaks are detected for virus samples through Energy dispersive X-ray spectroscopy (EDX) analyses confirming the presence of phage organic material. Cu peak is only detected for engineered viruses after Cu(II) exposure. Enzyme-linked immunosorbent assay (ELISA) analyses show the selective Cu(II) binding of engineered phages. Agarose gel electrophoresis (AGE) and zeta potential analyses reveal negative surface charges of engineered viral constructs. Positively charged Cytopore beads are coated with bacteriophages and used for Cu(II) ion sorption studies. ICP-MS analyses clearly show the improved Cu(II) binding of engineered viruses with respect to wild-type fd phages. Such bottom-up constructed, genetically engineered virus-based biomaterials may be applied in bioremediation studies targeting metal species from environmental samples.
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Affiliation(s)
- Nuriye Korkmaz
- Biosensor Group, Korea Institute of Science and Technology Europe Forschungsgesellschaft mbH, Campus E 7.1, D-66123, Saarbrücken, Germany
| | - Sandiego Himawan
- Biosensor Group, Korea Institute of Science and Technology Europe Forschungsgesellschaft mbH, Campus E 7.1, D-66123, Saarbrücken, Germany
- Bioprogrammable Materials Group, INM - Leibniz Institute for New Materials, Campus D 2.2, D-66123, Saarbrücken, Germany
| | - Muhammed Usman
- Biosensor Group, Korea Institute of Science and Technology Europe Forschungsgesellschaft mbH, Campus E 7.1, D-66123, Saarbrücken, Germany
| | - Seungyun Baik
- Environmental Safety Group, Korea Institute of Science and Technology Europe Forschungsgesellschaft mbH, Campus E 7.1, D-66123, Saarbrücken, Germany
| | - Minyoung Kim
- Biosensor Group, Korea Institute of Science and Technology Europe Forschungsgesellschaft mbH, Campus E 7.1, D-66123, Saarbrücken, Germany
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Winiewska-Szajewska M, Paprocki D, Marzec E, Poznański J. Effect of histidine protonation state on ligand binding at the ATP-binding site of human protein kinase CK2. Sci Rep 2024; 14:1463. [PMID: 38233478 PMCID: PMC10794401 DOI: 10.1038/s41598-024-51905-y] [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: 05/12/2023] [Accepted: 01/11/2024] [Indexed: 01/19/2024] Open
Abstract
Histidine residues contribute to numerous molecular interactions, owing to their structure with the ionizable aromatic side chain with pKa close to the physiological pH. Herein, we studied how the two histidine residues, His115 and His160 of the catalytic subunit of human protein kinase CK2, affect the binding of the halogenated heterocyclic ligands at the ATP-binding site. Thermodynamic studies on the interaction between five variants of hCK2α (WT protein and four histidine mutants) and three ionizable bromo-benzotriazoles and their conditionally non-ionizable benzimidazole counterparts were performed with nanoDSF, MST, and ITC. The results allowed us to identify the contribution of interactions involving the particular histidine residues to ligand binding. We showed that despite the well-documented hydrogen bonding/salt bridge formation dragging the anionic ligands towards Lys68, the protonated His160 also contributes to the binding of such ligands by long-range electrostatic interactions. Simultaneously, His 115 indirectly affects ligand binding, placing the hinge region in open/closed conformations.
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Affiliation(s)
- Maria Winiewska-Szajewska
- Institute of Biochemistry and Biophysics PAS, Pawinskiego 5a, 02-106, Warsaw, Poland.
- Division of Biophysics, Institute of Experimental Physics, University of Warsaw, Pasteura 5, 02-089, Warsaw, Poland.
| | - Daniel Paprocki
- Institute of Biochemistry and Biophysics PAS, Pawinskiego 5a, 02-106, Warsaw, Poland
| | - Ewa Marzec
- Institute of Biochemistry and Biophysics PAS, Pawinskiego 5a, 02-106, Warsaw, Poland
| | - Jarosław Poznański
- Institute of Biochemistry and Biophysics PAS, Pawinskiego 5a, 02-106, Warsaw, Poland.
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Li MX, Kang KW, Huang M, Cheng R, Wang W, Gao J, Wang J. Simple and rapid detection of tyrosinase activity with the adjustable light scattering properties of CoOOH nanoflakes. Anal Bioanal Chem 2023:10.1007/s00216-023-04710-x. [PMID: 37171584 DOI: 10.1007/s00216-023-04710-x] [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: 02/11/2023] [Revised: 03/18/2023] [Accepted: 03/28/2023] [Indexed: 05/13/2023]
Abstract
Tyrosinase (TYR), as an important biological enzyme, has been widely used in synthetic biology, medical hairdressing, environmental detection, biological sensors, and other fields. In clinical practice, tyrosinase activity is an important indicator for detecting melanoma. Therefore, the detection of tyrosinase activity is of great importance. Based on the polyphenol oxidase activity of tyrosinase, a simple and rapid detection method was proposed based on the adjustable light scattering properties of cobalt hydroxyl oxide nanoflakes (CoOOH NFs). It was found that the amount and size of CoOOH NFs decreased due to the redox reaction mediated by catechol (CC), resulting in a lower light scattering signal of CoOOH NFs. However, in the presence of tyrosinase, catechol was oxidized to a quinone structure, resulting in the reduced decomposition of CoOOH NFs and recovered light scattering signal, which was developed for the quantitative detection of tyrosinase activity. It was found that in the range of 10-400 U/L, the light scattering intensity was correlated linearly with tyrosinase activity, and the limit of detection was 6.71 U/L (3σ/k). To verify the feasibility of the proposed method in clinical samples, the spiked recovery experiments were carried out with human serum samples, which showed recovery rates between 93.0% and 104.6%, suggesting the high accuracy. The proposed assay provides a simple and rapid method for detection of a natural enzyme based on the adjustable light scattering properties of CoOOH nanoflakes, which lays the foundation for the development of various enzyme sensing applications in the future.
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Affiliation(s)
- Meng Xiao Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, People's Republic of China
| | - Kai Wen Kang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, People's Republic of China
| | - Min Huang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, People's Republic of China
| | - Ru Cheng
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, People's Republic of China
| | - Wei Wang
- The People's Hospital of Qingdao West Coast New Area, Qingdao, Shandong, 266499, People's Republic of China
| | - Jie Gao
- Department of Biological and Chemical Engineering, Chongqing University of Education, Chongqing, 400067, People's Republic of China
| | - Jian Wang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, People's Republic of China.
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Saleem Q, Shahid S, Rahim A, Bajaber MA, Mansoor S, Javed M, Iqbal S, Bahadur A, Aljazzar SO, Pashameah RA, AlSubhi SA, Alzahrani E, Farouk AE. A highly explicit electrochemical biosensor for catechol detection in real samples based on copper-polypyrrole. RSC Adv 2023; 13:13443-13455. [PMID: 37152558 PMCID: PMC10155604 DOI: 10.1039/d2ra07847c] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 03/31/2023] [Indexed: 05/09/2023] Open
Abstract
Catechol is a pollutant that can lead to serious health issues. Identification in aquatic environments is difficult. A highly specific, selective, and sensitive electrochemical biosensor based on a copper-polypyrrole composite and a glassy carbon electrode has been created for catechol detection. The novelty of this newly developed biosensor was tested using electrochemical techniques. The charge and mass transfer functions and partially reversible oxidation kinetics of catechol on the redesigned electrode surface were examined using electrochemical impedance spectroscopy and cyclic voltammetry scan rates. Using cyclic voltammetry, chronoamperometry, and differential pulse voltammetry, the characteristics of sensitivity (8.5699 μA cm-2), LOD (1.52 × 10-7 μM), LOQ (3.52 × 10-5 μM), linear range (0.02-2500 μM), specificity, interference, and real sample detection were investigated. The morphological, structural, and bonding characteristics were investigated using XRD, Raman, FTIR, and SEM. Using an oxidation-reduction technique, a suitable biosensor material was produced. In the presence of interfering compounds, it was shown that it was selective for catechol, like an enzyme.
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Affiliation(s)
- Qasar Saleem
- Department of Chemistry, School of Science, University of Management and Technology Lahore 54770 Pakistan
| | - Sammia Shahid
- Department of Chemistry, School of Science, University of Management and Technology Lahore 54770 Pakistan
| | - Abdur Rahim
- Department of Chemistry, COMSATS University Islamabad Pakistan
| | - Majed A Bajaber
- Chemistry Department, Faculty of Science, King Khalid University P. O. Box 9004 Abha 61413 Saudi Arabia
| | - Sana Mansoor
- Department of Chemistry, School of Science, University of Management and Technology Lahore 54770 Pakistan
| | - Mohsin Javed
- Department of Chemistry, School of Science, University of Management and Technology Lahore 54770 Pakistan
| | - Shahid Iqbal
- Department of Chemistry, School of Natural Sciences (SNS), National University of Science and Technology (NUST) H-12 Islamabad 46000 Pakistan
| | - Ali Bahadur
- Department of Chemistry, College of Science and Technology, Wenzhou-Kean University Wenzhou 325060 China
| | - Samar O Aljazzar
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University P. O. Box 84428 Riyadh 11671 Saudi Arabia
| | - Rami Adel Pashameah
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University Makkah 24230 Saudi Arabia
| | - Samah A AlSubhi
- Laboratory Medicine Department, Faculty of Applied Medical Science, Umm Al-Qura University Makkah Saudi Arabia
| | - Eman Alzahrani
- Department of Chemistry, College of Science, Taif University P. O. Box 11099 Taif 21944 Saudi Arabia
| | - Abd-ElAziem Farouk
- Department of Chemistry, College of Science, Taif University P. O. Box 11099 Taif 21944 Saudi Arabia
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Fan X, Zhang P, Batool W, Liu C, Hu Y, Wei Y, He Z, Zhang SH. Contribution of the Tyrosinase (MoTyr) to Melanin Synthesis, Conidiogenesis, Appressorium Development, and Pathogenicity in Magnaporthe oryzae. J Fungi (Basel) 2023; 9:jof9030311. [PMID: 36983479 PMCID: PMC10059870 DOI: 10.3390/jof9030311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/15/2023] [Accepted: 02/20/2023] [Indexed: 03/05/2023] Open
Abstract
Dihydroxynapthalene-(DHN) and L-dihydroxyphenylalanine (L-DOPA) are two types of dominant melanin in fungi. Fungal melanins with versatile functions are frequently associated with pathogenicity and stress tolerance. In rice blast fungus, Magnaporthe oryzae, DHN melanin is essential to maintain the integrity of the infectious structure, appressoria; but the role of the tyrosinase-derived L-DOPA melanin is still unknown. Here, we have genetically and biologically characterized a tyrosinase gene (MoTyr) in M. oryzae. MoTyr encodes a protein of 719 amino acids that contains the typical CuA and CuB domains of tyrosinase. The deletion mutant of MoTyr (ΔMoTyr) was obtained by using a homologous recombination approach. Phenotypic analysis showed that conidiophore stalks and conidia formation was significantly reduced in ΔMoTyr. Under different concentrations of glycerol and PEG, more appressoria collapsed in the mutant strains than in the wild type, suggesting MoTyr is associated with the integrity of the appressorium wall. Melanin measurement confirmed that MoTyr loss resulted in a significant decrease in melanin synthesis. Accordingly, the loss of MoTyr stunted the conidia germination under stress conditions. Importantly, the MoTyr deletion affected both infection and pathogenesis stages. These results suggest that MoTyr, like DHN pigment synthase, plays a key role in conidiophore stalks formation, appressorium integrity, and pathogenesis of M. oryzae, revealing a potential drug target for blast disease control.
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Affiliation(s)
- Xiaoning Fan
- The Key Laboratory for Extreme-Environmental Microbiology, College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Penghui Zhang
- The Key Laboratory for Extreme-Environmental Microbiology, College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Wajjiha Batool
- The Key Laboratory for Extreme-Environmental Microbiology, College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Chang Liu
- The Key Laboratory for Extreme-Environmental Microbiology, College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Yan Hu
- The Key Laboratory for Extreme-Environmental Microbiology, College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Yi Wei
- The Key Laboratory for Extreme-Environmental Microbiology, College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Zhengquan He
- Key Laboratory of Three Gorges Regional Plant Genetics & Germplasm Enhancement (CTGU), Biotechnology Research Center, China Three Gorges University, Yichang 443000, China
| | - Shi-Hong Zhang
- The Key Laboratory for Extreme-Environmental Microbiology, College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
- Correspondence:
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Zhao Y, Yu S, Wang Y, Chen Y, Chen J, Wang J, Liu M, Wang S. Pueraria protein extract inhibits melanogenesis and promotes melanoma cell apoptosis through the regulation of MITF and mitochondrial‑related pathways. Mol Med Rep 2023; 27:64. [PMID: 36734267 PMCID: PMC9926868 DOI: 10.3892/mmr.2023.12951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 12/16/2022] [Indexed: 02/04/2023] Open
Abstract
Pueraria Lobata Radix (P. Lobata Radix) is an edible traditional Chinese medicine that contains various active compounds. Proteins from P. Lobata Radix have become the subject of increased interest in recent years. In evaluating the whitening effect on the skin, the present study found that the P. Lobata Radix water‑soluble total protein extract (PLP) had the strongest inhibitory effect on tyrosinase activity. In the present study, the anti‑melanogenic effect of PLP and the inhibitory effect on B16 melanoma cells were investigated. PLP significantly reduced the tyrosinase activity and melanin content in B16 melanoma cells. Mechanistically, PLP inhibited melanogenesis by decreasing the expression of tyrosinase, tyrosinase‑related protein (TRP)‑1 and TRP‑2 through downregulation of the microphthalmia‑associated transcription factor (MITF) gene, which was mediated by inhibition of p38 mitogen‑activated protein kinase signaling. In addition, PLP inhibited cell viability and triggered apoptosis of B16 cells in a dose‑dependent manner. Exposure to PLP reduced the mitochondrial membrane potential (MMP) and decreased ATP generation, leading to mitochondria‑related apoptosis of B16 melanoma cells. The expression levels of succinate dehydrogenase (SDH) and its two related subunits (SDHA and SDHB) were downregulated significantly by PLP, which may be associated with the regulation of mitochondrial energy metabolism by PLP. These results may explain why MMP collapse and reduced ATP generation were observed in B16 melanoma cells treated with PLP. Finally, the present study demonstrated that the inhibition of melanin synthesis by PLP was correlated with the regulation of antioxidant enzymes to reduce reactive oxygen species levels. These results suggested that PLP inhibits melanogenesis by downregulating the expression of MITF‑related melanogenic enzymes and triggering apoptosis through mitochondria‑related pathways.
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Affiliation(s)
- Yuchu Zhao
- Jilin Provincial Key Laboratory of Biomacromolecules of Chinese Medicine, Northeast Asian Research Institute of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, Jilin 130117, P.R. China
| | - Shiting Yu
- Jilin Provincial Key Laboratory of Biomacromolecules of Chinese Medicine, Northeast Asian Research Institute of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, Jilin 130117, P.R. China
| | - Yue Wang
- College of Pharmacy, Changchun University of Chinese Medicine, Changchun, Jilin 130117, P.R. China
| | - Yanyan Chen
- College of Pharmacy, Changchun University of Chinese Medicine, Changchun, Jilin 130117, P.R. China
| | - Jingjing Chen
- Jilin Provincial Key Laboratory of Biomacromolecules of Chinese Medicine, Northeast Asian Research Institute of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, Jilin 130117, P.R. China
| | - Jiawen Wang
- Jilin Provincial Key Laboratory of Biomacromolecules of Chinese Medicine, Northeast Asian Research Institute of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, Jilin 130117, P.R. China
| | - Meichen Liu
- Jilin Provincial Key Laboratory of Biomacromolecules of Chinese Medicine, Northeast Asian Research Institute of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, Jilin 130117, P.R. China,Correspondence to: Dr Meichen Liu or Mr. Siming Wang, Jilin Provincial Key Laboratory of Biomacromolecules of Chinese Medicine, Northeast Asian Research Institute of Traditional Chinese Medicine, Changchun University of Chinese Medicine, 1035 Boshuo Road, Changchun, Jilin 130117, P.R. China, E-mail:
| | - Siming Wang
- Jilin Provincial Key Laboratory of Biomacromolecules of Chinese Medicine, Northeast Asian Research Institute of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, Jilin 130117, P.R. China,Correspondence to: Dr Meichen Liu or Mr. Siming Wang, Jilin Provincial Key Laboratory of Biomacromolecules of Chinese Medicine, Northeast Asian Research Institute of Traditional Chinese Medicine, Changchun University of Chinese Medicine, 1035 Boshuo Road, Changchun, Jilin 130117, P.R. China, E-mail:
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Mahalapbutr P, Nuramrum N, Rungrotmongkol T, Kongtaworn N, Sabuakham S. Structural dynamics and susceptibility of isobutylamido thiazolyl resorcinol (Thiamidol TM) against human and mushroom tyrosinases. J Biomol Struct Dyn 2023; 41:11810-11817. [PMID: 36644799 DOI: 10.1080/07391102.2023.2167001] [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: 11/23/2022] [Accepted: 12/23/2022] [Indexed: 01/17/2023]
Abstract
Tyrosinase, a key enzyme catalyzing a rate-limiting step of the melanin production, has been the most promising target for suppressing hyperpigmentation. Although a number of tyrosinase inhibitors have been developed, most of those lack clinical efficacy as they were identified from using mushroom tyrosinase (mTyr) as the target. Previous study revealed that the inhibitory effect of isobutylamido thiazolyl resorcinol (ThiamidolTM) on human tyrosinase (hTyr) is ∼100 times higher than that on mTyr. In the present study, we aimed to investigate the structural dynamics and susceptibility of ThiamidolTM against hTyr and mTyr at the atomic level using molecular docking, molecular dynamics simulation, and free energy calculation based on the molecular mechanics/Poisson-Boltzmann surface area method. The obtained results revealed that the resorcinol moiety of ThiamidolTM was found to be embedded in the catalytic copper center, interacting with H180, H202, H211, F386, and H390 residues of hTyr as well as with F264 residue of mTyr, mostly through van der Waals interactions. However, the number of destabilizing residues was found to be more pronounced in the ThiamidolTM/mTyr complex than the ThiamidolTM/hTyr system, supported by the lower binding affinity of ThiamidolTM/mTyr complex as well as the higher water accessibility and the lower number of atomic contacts at the active site of mTyr. Altogether, the structural and energetic information from this work would be useful for further optimization of more potent human tyrosinase inhibitors based on ThiamidolTM scaffold.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Panupong Mahalapbutr
- Department of Biochemistry, Center for Translational Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Napat Nuramrum
- Department of Biochemistry, Center for Translational Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Thanyada Rungrotmongkol
- Program in Bioinformatics and Computational Biology, Graduate School, Chulalongkorn University, Bangkok, Thailand
- Structural and Computational Biology Research Unit, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Napat Kongtaworn
- Program in Bioinformatics and Computational Biology, Graduate School, Chulalongkorn University, Bangkok, Thailand
| | - Sahachai Sabuakham
- Department of Biochemistry, Center for Translational Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
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10
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Athapaththu AMGK, Sanjaya SS, Lee KT, Karunarathne WAHM, Choi YH, Hur SP, Kim GY. Pinostrobin Suppresses the α-Melanocyte-Stimulating Hormone-Induced Melanogenic Signaling Pathway. Int J Mol Sci 2023; 24:ijms24010821. [PMID: 36614262 PMCID: PMC9821324 DOI: 10.3390/ijms24010821] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/27/2022] [Accepted: 12/27/2022] [Indexed: 01/05/2023] Open
Abstract
Pinostrobin is a dietary flavonoid found in several plants that possesses pharmacological properties, such as anti-cancer, anti-virus, antioxidant, anti-ulcer, and anti-aromatase effects. However, it is unclear if pinostrobin exerts anti-melanogenic properties and, if so, what the underlying molecular mechanisms comprise. Therefore, we, in this study, investigated whether pinostrobin inhibits melanin biosynthesis in vitro and in vivo, as well as the potential associated mechanism. Pinostrobin reduced mushroom tyrosinase activity in vitro in a concentration-dependent manner, with an IC50 of 700 μM. Molecular docking simulations further revealed that pinostrobin forms a hydrogen bond, as well as other non-covalent interactions, between the C-type lectin-like fold and polyphenol oxidase chain, rather than the previously known copper-containing catalytic center. Additionally, pinostrobin significantly decreased α-melanocyte-stimulating hormone (α-MSH)-induced extracellular and intracellular melanin production, as well as tyrosinase activity, in B16F10 melanoma cells. More specifically, pinostrobin inhibited the α-MSH-induced melanin biosynthesis signaling pathway by suppressing the cAMP-CREB-MITF axis. In fact, pinostrobin also attenuated pigmentation in α-MSH-stimulated zebrafish larvae without causing cardiotoxicity. The findings suggest that pinostrobin effectively inhibits melanogenesis in vitro and in vivo via regulation of the cAMP-CREB-MITF axis.
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Affiliation(s)
| | | | - 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
| | - Sung-Pyo Hur
- Department of Marine Life Science, Jeju National University, Jeju 63243, Republic of Korea
| | - Gi-Young Kim
- Department of Marine Life Science, Jeju National University, Jeju 63243, Republic of Korea
- Correspondence:
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11
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Shin M, Truong VL, Lee M, Kim D, Kim MS, Cho H, Jung YH, Yang J, Jeong WS, Kim Y. Investigation of phenyllactic acid as a potent tyrosinase inhibitor produced by probiotics. Curr Res Food Sci 2022; 6:100413. [PMID: 36569188 PMCID: PMC9772785 DOI: 10.1016/j.crfs.2022.100413] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 12/06/2022] [Accepted: 12/08/2022] [Indexed: 12/13/2022] Open
Abstract
Melanogenesis is responsible for skin pigmentation and the enzymatic browning of foods. Tyrosinases play a major role in melanin synthesis, and many attempts have been made to identify new natural tyrosinase inhibitors, but few have sought to do in microbes. Postbiotics are bioactive compounds produced by the metabolism of probiotics and have been reported to be safe and effective. In this study, we evaluated the tyrosinase inhibitory effects of culture supernatants of probiotics and discovered novel bacterial metabolites that can be used as a potent tyrosinase inhibitor based on metabolomics. Cultures of Bifidobacterium bifidum IDCC 4201 and Lactiplantibacillus plantarum IDCC 3501 showed effective anti-tyrosinase, reduced melanin synthesis, and altered protein expression associated with the melanogenesis pathway. Comparative metabolomics analyses conducted by GC-MS identified metabolites commonly produced by B. bifidum and L. plantarum. Of eight selected metabolites, phenyllactic acid exhibited significant tyrosinase-inhibitory activity. Our findings suggest that applications of probiotic culture supernatants containing high amounts of phenyllactic acid have potential use as anti-melanogenesis agents in food and medicines.
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Affiliation(s)
- Minhye Shin
- Department of Microbiology, College of Medicine, Inha University, Incheon, 22212, Republic of Korea
- Department of Biomedical Science, Program in Biomedical Science and Engineering, Inha University, Incheon, 22212, Republic of Korea
| | - Van-Long Truong
- Food and Bio-industry Research Institute, School of Food Science & Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Minjee Lee
- Ildong Bioscience, Pyeongtaek-si, Gyeonggi-do, 17957, Republic of Korea
| | - Donggyu Kim
- Department of Microbiology, College of Medicine, Inha University, Incheon, 22212, Republic of Korea
- Department of Biomedical Science, Program in Biomedical Science and Engineering, Inha University, Incheon, 22212, Republic of Korea
| | - Myun Soo Kim
- ICBIO, Cheonan-si, Chungchengnam-do, 31027, Republic of Korea
| | - Hana Cho
- ICBIO, Cheonan-si, Chungchengnam-do, 31027, Republic of Korea
| | - Young Hoon Jung
- Food and Bio-industry Research Institute, School of Food Science & Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Jungwoo Yang
- Ildong Bioscience, Pyeongtaek-si, Gyeonggi-do, 17957, Republic of Korea
- Corresponding author.
| | - Woo Sik Jeong
- Food and Bio-industry Research Institute, School of Food Science & Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, 41566, Republic of Korea
- Corresponding author.
| | - Younghoon Kim
- Department of Agricultural Biotechnology, Research Institute of Agriculture and Life Science, Seoul National University, Seoul, 08826, Republic of Korea
- Corresponding author.
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12
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Cephalosporin as Potent Urease and Tyrosinase Inhibitor: Exploration through Enzyme Inhibition, Kinetic Mechanism, and Molecular Docking Studies. BIOMED RESEARCH INTERNATIONAL 2022; 2022:1092761. [PMID: 35937399 PMCID: PMC9352478 DOI: 10.1155/2022/1092761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 07/08/2022] [Indexed: 11/17/2022]
Abstract
In present study, eleven cephalosporin drugs were selected to explore their new medically important enzyme targets with inherited safety advantage. To this end, selected drugs with active ingredient, cefpodoxime proxetil, ceftazidime, cefepime, ceftriaxone sodium, cefaclor, cefotaxime sodium, cefixime trihydrate, cephalexin, cefadroxil, cephradine, and cefuroxime, were evaluated and found to have significant activity against urease (IC50 = 0.06 ± 0.004 to 0.37 ± 0.046 mM) and tyrosinase (IC50 = 0.01 ± 0.0005 to 0.12 ± 0.017 mM) enzymes. Urease activity was lower than standard thiourea; however, tyrosinase activity of all drugs outperforms (ranging 6 to 18 times) the positive control: hydroquinone (IC50 = 0.18 ± 0.02 mM). Moreover, the kinetic analysis of the most active drugs, ceftriaxone sodium and cefotaxime sodium, revealed that they bind irreversibly with both the enzymes; however, their mode of action was competitive for urease and mixed-type, preferentially competitive for tyrosinase enzyme. Like in vitro activity, ceftriaxone sodium and cefotaxime sodium docking analysis showed their considerable binding affinity and significant interactions with both urease and tyrosinase enzymes sufficient for downstream signaling responsible for observed enzyme inhibition in vitro, purposing them as potent candidates to control enzyme-rooted obstructions in future.
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13
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Zhong Z, Zhou Z, Chen J, Zhang J. Identification of 12 OCA Cases in Chinese Population and Two Novel Variants. Front Genet 2022; 13:926511. [PMID: 35923705 PMCID: PMC9340472 DOI: 10.3389/fgene.2022.926511] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 06/09/2022] [Indexed: 11/21/2022] Open
Abstract
OCA (oculocutaneous albinism) refers to a group of heterogeneous congenital disorders of which the common manifestations are variable degrees of cutaneous hypopigmentation and significant visual impairment, including poor visual acuity, photophobia, and nystagmus. Molecular analysis may elucidate its pathogenesis and be in favor of accurate diagnosis. High-throughput sequencing and Sanger sequencing were performed to detect mutational alleles and in silico analysis was performed for prediction of variant pathogenicity. Ten TYR-related and two OCA2-related patients were identified with 16 different variants with potential pathogenicity. Two novel missense variants [TYR: c.623T > G, p(Leu208Arg) and OCA2: c.1325A > G, p(Asn442Ser)] are identified in this study, and three OCA cases are reported for the first time in Chinese population based on their associated variants. Analysis of crystal structures of TYR ortholog and its paralog TYRP1 suggests that the substitution of Leu208 may have an impact on protein stability. This study may facilitate OCA diagnosis by expanding the mutational spectrum of TYR and OCA2 as well as further basic studies about these two genes.
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Affiliation(s)
- Zilin Zhong
- Birth Defect Group, Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People’s Hospital, School of Medicine, Tongji University, Shanghai, China
- Department of Regenerative Medicine, School of Medicine, Tongji University, Shanghai, China
| | - Zheng Zhou
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Jianjun Chen
- Birth Defect Group, Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People’s Hospital, School of Medicine, Tongji University, Shanghai, China
- Department of Medical Genetics, School of Medicine, Tongji University, Shanghai, China
- *Correspondence: Jianjun Chen, Jun Zhang,
| | - Jun Zhang
- Research Center for Translational Medicine, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
- Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration of Ministry of Education, Stem Cell Translational Research Center of Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
- *Correspondence: Jianjun Chen, Jun Zhang,
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14
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Yu Q, Fan L, Ding Z. The inhibition mechanisms between asparagus polyphenols after hydrothermal treatment and tyrosinase: A circular dichroism spectrum, fluorescence, and molecular docking study. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.101790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Krzemińska A, Kwiatos N, Arenhart Soares F, Steinbüchel A. Theoretical Studies of Cyanophycin Dipeptides as Inhibitors of Tyrosinases. Int J Mol Sci 2022; 23:ijms23063335. [PMID: 35328756 PMCID: PMC8950311 DOI: 10.3390/ijms23063335] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 03/13/2022] [Accepted: 03/17/2022] [Indexed: 02/06/2023] Open
Abstract
The three-dimensional structure of tyrosinase has been crystallized from many species but not from Homo sapiens. Tyrosinase is a key enzyme in melanin biosynthesis, being an important target for melanoma and skin-whitening cosmetics. Several studies employed the structure of tyrosinase from Agaricus bisporus as a model enzyme. Recently, 98% of human genome proteins were elucidated by AlphaFold. Herein, the AlphaFold structure of human tyrosinase and the previous model were compared. Moreover, tyrosinase-related proteins 1 and 2 were included, along with inhibition studies employing kojic and cinnamic acids. Peptides are widely studied for their inhibitory activity of skin-related enzymes. Cyanophycin is an amino acid polymer produced by cyanobacteria and is built of aspartic acid and arginine; arginine can be also replaced by other amino acids. A new set of cyanophycin-derived dipeptides was evaluated as potential inhibitors. Aspartate–glutamate showed the strongest interaction and was chosen as a leading compound for future studies.
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16
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Lee KE, Bharadwaj S, Sahoo AK, Yadava U, Kang SG. Determination of tyrosinase-cyanidin-3-O-glucoside and (-/+)-catechin binding modes reveal mechanistic differences in tyrosinase inhibition. Sci Rep 2021; 11:24494. [PMID: 34969954 PMCID: PMC8718538 DOI: 10.1038/s41598-021-03569-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 12/06/2021] [Indexed: 12/13/2022] Open
Abstract
Tyrosinase, exquisitely catalyzes the phenolic compounds into brown or black pigment, inhibition is used as a treatment for dermatological or neurodegenerative disorders. Natural products, such as cyanidin-3-O-glucoside and (-/+)-catechin, are considered safe and non-toxic food additives in tyrosinase inhibition but their ambiguous inhibitory mechanism against tyrosinase is still elusive. Thus, we presented the mechanistic insights into tyrosinase with cyanidin-3-O-glucoside and (-/+)-catechin using computational simulations and in vitro assessment. Initial molecular docking results predicted ideal docked poses (- 9.346 to - 5.795 kcal/mol) for tyrosinase with selected flavonoids. Furthermore, 100 ns molecular dynamics simulations and post-simulation analysis of docked poses established their stability and oxidation of flavonoids as substrate by tyrosinase. Particularly, metal chelation via catechol group linked with the free 3-OH group on the unconjugated dihydropyran heterocycle chain was elucidated to contribute to tyrosinase inhibition by (-/+)-catechin against cyanidin-3-O-glucoside. Also, predicted binding free energy using molecular mechanics/generalized Born surface area for each docked pose was consistent with in vitro enzyme inhibition for both mushroom and murine tyrosinases. Conclusively, (-/+)-catechin was observed for substantial tyrosinase inhibition and advocated for further investigation for drug development against tyrosinase-associated diseases.
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Affiliation(s)
- Kyung Eun Lee
- Department of Biotechnology, Institute of Biotechnology, College of Life and Applied Sciences, Yeungnam University, 280 Daehak-Ro, Gyeongsan, 38541, Gyeongbuk, Korea.
- Stemforce, 313 Institute of Industrial Technology, Yeungnam University, 280 Daehak-Ro, Gyeongsan, 38541, Gyeongbuk, Korea.
| | - Shiv Bharadwaj
- Department of Biotechnology, Institute of Biotechnology, College of Life and Applied Sciences, Yeungnam University, 280 Daehak-Ro, Gyeongsan, 38541, Gyeongbuk, Korea.
- Laboratory of Ligand Engineering, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV Research Center, Vestec, Czech Republic.
| | - Amaresh Kumar Sahoo
- Department of Applied Sciences, Indian Institute of Information Technology Allahabad, Allahabad, 211015, Uttar Pradesh, India.
| | - Umesh Yadava
- Department of Physics, Deen Dayal Upadhyay Gorakhpur University, Gorakhpur, India.
| | - Sang Gu Kang
- Department of Biotechnology, Institute of Biotechnology, College of Life and Applied Sciences, Yeungnam University, 280 Daehak-Ro, Gyeongsan, 38541, Gyeongbuk, Korea.
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17
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Liu Y, Han Y, Zhu T, Wu X, Yu W, Zhu J, Shang Y, Lin X, Zhao T. Targeting delivery and minimizing epidermal diffusion of tranexamic acid by hyaluronic acid-coated liposome nanogels for topical hyperpigmentation treatment. Drug Deliv 2021; 28:2100-2107. [PMID: 34596008 PMCID: PMC8491700 DOI: 10.1080/10717544.2021.1983081] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Hyperpigmentation is a common complaint and distressing problem in dermatology, and tranexamic acid (TA) is an effective treatment agent but limited by the delivery to melanocytes in the epidermis. Herein, a novel TA naogels (named HA/TA-LP), combining the advantages of liposomes and hyaluronic acid (HA), are prepared and assessed for topical hyperpigmentation treatment with targeting delivery and minimizing epidermal diffusion. Morphological characteristics indicate numerous TA-loaded liposomes packed in HA gels. In vitro cell studies using human A375 melanoma cells show that HA/TA-LP can promote the uptake of TA by targeting delivery with resulting inhibition of tyrosinase activity and melanin production. Guinea pigs are used to construct hyperpigmentation models and investigate the topical delivery and treatment efficacy of HA/TA-LP. In vivo topical delivery studies indicate HA/TA-LP realize the effective delivery into melanocytes with an ideal balance of effective permeability and minimizing epidermal diffusion. Subsequently, hyperpigmentation treatment assessments reveal that HA/TA-LP inhibit tyrosinase activity and melanin production under the radiation of UVB. Our study identifies favorable properties of HA/TA-LP for treating hyperpigmentation, and provides an experimental basis for further clinical application.
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Affiliation(s)
- Ying Liu
- Department of Plastic and Cosmetic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China.,Department of Laser and Aesthetic Medicine, Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yue Han
- Department of Plastic and Cosmetic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Tingting Zhu
- Department of Dermatology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Xianglei Wu
- Department of Laser and Aesthetic Medicine, Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wenxin Yu
- Department of Laser and Aesthetic Medicine, Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jiafang Zhu
- Department of Laser and Aesthetic Medicine, Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ying Shang
- Department of Laser and Aesthetic Medicine, Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaoxi Lin
- Department of Laser and Aesthetic Medicine, Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Tianlan Zhao
- Department of Plastic and Cosmetic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China
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18
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Tyrp1 Mutant Variants Associated with OCA3: Computational Characterization of Protein Stability and Ligand Binding. Int J Mol Sci 2021; 22:ijms221910203. [PMID: 34638544 PMCID: PMC8508144 DOI: 10.3390/ijms221910203] [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: 08/16/2021] [Revised: 09/16/2021] [Accepted: 09/17/2021] [Indexed: 12/21/2022] Open
Abstract
Oculocutaneous albinism type 3 (OCA3) is an autosomal recessive disorder caused by mutations in the TYRP1 gene. Tyrosinase-related protein 1 (Tyrp1) is involved in eumelanin synthesis, catalyzing the oxidation of 5,6-dihydroxyindole-2-carboxylic acid oxidase (DHICA) to 5,6-indolequinone-2-carboxylic acid (IQCA). Here, for the first time, four OCA3-causing mutations of Tyrp1, C30R, H215Y, D308N, and R326H, were investigated computationally to understand Tyrp1 protein stability and catalytic activity. Using the Tyrp1 crystal structure (PDB:5M8L), global mutagenesis was conducted to evaluate mutant protein stability. Consistent with the foldability parameter, C30R and H215Y should exhibit greater instability, and two other mutants, D308N and R326H, are expected to keep a native conformation. SDS-PAGE and Western blot analysis of the purified recombinant proteins confirmed that the foldability parameter correctly predicted the effect of mutations critical for protein stability. Further, the mutant variant structures were built and simulated for 100 ns to generate free energy landscapes and perform docking experiments. Free energy landscapes formed by Y362, N378, and T391 indicate that the binding clefts of C30R and H215Y mutants are larger than the wild-type Tyrp1. In docking simulations, the hydrogen bond and salt bridge interactions that stabilize DHICA in the active site remain similar among Tyrp1, D308N, and R326H. However, the strengths of these interactions and stability of the docked ligand may decrease proportionally to mutation severity due to the larger and less well-defined natures of the binding clefts in mutants. Mutational perturbations in mutants that are not unfolded may result in allosteric alterations to the active site, reducing the stability of protein-ligand interactions.
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19
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Xu Y, Wu Y, Lv X, Sun G, Zhang H, Chen T, Du G, Li J, Liu L. Design and construction of novel biocatalyst for bioprocessing: Recent advances and future outlook. BIORESOURCE TECHNOLOGY 2021; 332:125071. [PMID: 33826982 DOI: 10.1016/j.biortech.2021.125071] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 03/19/2021] [Accepted: 03/23/2021] [Indexed: 06/12/2023]
Abstract
Bioprocess, a biocatalysis-based technology, is becoming popular in many research fields and widely applied in industrial manufacturing. However, low bioconversion, low productivity, and high costs during industrial processes are usually the limitation in bioprocess. Therefore, many biocatalyst strategies have been developed to meet these challenges in recent years. In this review, we firstly discuss protein engineering strategies, which are emerged for improving the biocatalysis activity of biocatalysts. Then, we summarize metabolic engineering strategies that are promoting the development of microbial cell factories. Next, we illustrate the necessity of using the combining strategy of protein engineering and metabolic engineering for efficient biocatalysts. Lastly, future perspectives about the development and application of novel biocatalyst strategies are discussed. This review provides theoretical guidance for the development of efficient, sustainable, and economical bioprocesses mediated by novel biocatalysts.
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Affiliation(s)
- Yameng Xu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, PR China; Science Center for Future Foods, Jiangnan University, Wuxi 214122, PR China
| | - Yaokang Wu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, PR China; Science Center for Future Foods, Jiangnan University, Wuxi 214122, PR China
| | - Xueqin Lv
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, PR China; Science Center for Future Foods, Jiangnan University, Wuxi 214122, PR China
| | - Guoyun Sun
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, PR China; Science Center for Future Foods, Jiangnan University, Wuxi 214122, PR China
| | - Hongzhi Zhang
- Shandong Runde Biotechnology Co., Ltd., Tai'an 271000, PR China
| | - Taichi Chen
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, PR China; Science Center for Future Foods, Jiangnan University, Wuxi 214122, PR China
| | - Guocheng Du
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, PR China; Science Center for Future Foods, Jiangnan University, Wuxi 214122, PR China
| | - Jianghua Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, PR China; Science Center for Future Foods, Jiangnan University, Wuxi 214122, PR China
| | - Long Liu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, PR China; Science Center for Future Foods, Jiangnan University, Wuxi 214122, PR China.
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20
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Correia P, Oliveira H, Araújo P, Brás NF, Pereira AR, Moreira J, de Freitas V, Mateus N, Oliveira J, Fernandes I. The Role of Anthocyanins, Deoxyanthocyanins and Pyranoanthocyanins on the Modulation of Tyrosinase Activity: An In Vitro and In Silico Approach. Int J Mol Sci 2021; 22:ijms22126192. [PMID: 34201208 PMCID: PMC8230073 DOI: 10.3390/ijms22126192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 05/31/2021] [Accepted: 06/01/2021] [Indexed: 12/27/2022] Open
Abstract
Tyrosinase is the central enzyme involved in the highly complex process of melanin formation, catalyzing the rate-limiting steps of this biosynthetic pathway. Due to such a preponderant role, it has become a major target in the treatment of undesired skin pigmentation conditions and also in the prevention of enzymatic food browning. Numerous phenolic-based structures from natural sources have been pointed out as potential tyrosinase inhibitors, including anthocyanins. The aim of the present study was to individually assess the tyrosinase inhibitory activity of eight purified compounds with a variable degree of structural complexity: native anthocyanins, deoxyanthocyanins, and pyranoanthocyanins. The latter two, the groups of anthocyanin-related compounds with enhanced stability, were tested for the first time. Compounds 1 to 4 (luteolinidin, deoxymalvidin, cyanidin-, and malvidin-3-O-glucoside) revealed to be the most effective inhibitors, and further kinetic studies suggested their inhibition mechanism to be of a competitive nature. Structure–activity relationships were proposed based on molecular docking studies conducted with mushroom tyrosinase (mTYR) and human tyrosinase-related protein 1 (hTYRP1) crystal structures, providing information about the binding affinity and the different types of interactions established with the enzyme’s active center which corroborated the findings of the inhibition and kinetic studies. Overall, these results support the applicability of these compounds as pigmentation modulators.
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Affiliation(s)
- Patrícia Correia
- LAQV-REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal; (P.C.); (H.O.); (P.A.); (N.F.B.); (A.R.P.); (V.d.F.); (N.M.)
| | - Hélder Oliveira
- LAQV-REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal; (P.C.); (H.O.); (P.A.); (N.F.B.); (A.R.P.); (V.d.F.); (N.M.)
| | - Paula Araújo
- LAQV-REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal; (P.C.); (H.O.); (P.A.); (N.F.B.); (A.R.P.); (V.d.F.); (N.M.)
| | - Natércia F. Brás
- LAQV-REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal; (P.C.); (H.O.); (P.A.); (N.F.B.); (A.R.P.); (V.d.F.); (N.M.)
| | - Ana Rita Pereira
- LAQV-REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal; (P.C.); (H.O.); (P.A.); (N.F.B.); (A.R.P.); (V.d.F.); (N.M.)
| | - Joana Moreira
- Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, Faculty of Pharmacy of the University of Porto, Rua Jorge Viterbo Ferreira nº 228, 4050-313 Porto, Portugal;
- Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR), Universidade do Porto, Edifício do Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4050-208 Matosinhos, Portugal
| | - Victor de Freitas
- LAQV-REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal; (P.C.); (H.O.); (P.A.); (N.F.B.); (A.R.P.); (V.d.F.); (N.M.)
| | - Nuno Mateus
- LAQV-REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal; (P.C.); (H.O.); (P.A.); (N.F.B.); (A.R.P.); (V.d.F.); (N.M.)
| | - Joana Oliveira
- LAQV-REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal; (P.C.); (H.O.); (P.A.); (N.F.B.); (A.R.P.); (V.d.F.); (N.M.)
- Correspondence: (J.O.); (I.F.)
| | - Iva Fernandes
- LAQV-REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal; (P.C.); (H.O.); (P.A.); (N.F.B.); (A.R.P.); (V.d.F.); (N.M.)
- Correspondence: (J.O.); (I.F.)
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21
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Liu J, Liu Y, He X, Teng B, McRae JM. Valonea Tannin: Tyrosinase Inhibition Activity, Structural Elucidation and Insights into the Inhibition Mechanism. Molecules 2021; 26:molecules26092747. [PMID: 34067030 PMCID: PMC8125085 DOI: 10.3390/molecules26092747] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 05/04/2021] [Accepted: 05/05/2021] [Indexed: 12/11/2022] Open
Abstract
Valonea tannin is a natural product readily extracted from acorn shells that has been suggested to have potential skin whitening properties. This study investigated the tyrosinase inhibition activity of extracted valonea tannin and the associated structure–function activity. Nuclear magnetic resonance spectroscopy and molecular weight analysis with gel permeation chromatography revealed that valonea tannin could be characterized as a hydrolysable tannin with galloyl, hexahydroxydiphenoyl and open formed-glucose moieties and an average molecular weight of 3042 ± 15 Da. Tyrosinase inhibition assays demonstrated that valonea tannin was 334 times more effective than gallic acid and 3.4 times more effective than tannic acid, which may relate to the larger molecular size. Kinetic studies of the inhibition reactions indicated that valonea tannin provided tyrosinase inhibition through mixed competitive–uncompetitive way. Stern–Volmer fitted fluorescence quenching analysis, isothermal titration calorimetry analysis and in silico molecule docking showed valonea tannin non-selectively bound to the surface of tyrosinase via hydrogen bonds and hydrophobic interactions. Inductively coupled plasma-optical emission spectroscopy and free radical scavenging assays indicated the valonea tannin had copper ion chelating and antioxidant ability, which may also contribute to inhibition activity. These results demonstrated the structure–function activity of valonea tannin as a highly effective natural tyrosinase inhibitor that may have commercial application in dermatological medicines or cosmetic products.
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Affiliation(s)
- Jiaman Liu
- College of Science, Shantou University, Shantou 515063, China; (J.L.); (Y.L.); (X.H.)
| | - Yuqing Liu
- College of Science, Shantou University, Shantou 515063, China; (J.L.); (Y.L.); (X.H.)
| | - Xiaofeng He
- College of Science, Shantou University, Shantou 515063, China; (J.L.); (Y.L.); (X.H.)
| | - Bo Teng
- College of Science, Shantou University, Shantou 515063, China; (J.L.); (Y.L.); (X.H.)
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China
- Correspondence:
| | - Jacqui M. McRae
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia;
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22
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Kampatsikas I, Rompel A. Similar but Still Different: Which Amino Acid Residues Are Responsible for Varying Activities in Type-III Copper Enzymes? Chembiochem 2021; 22:1161-1175. [PMID: 33108057 PMCID: PMC8049008 DOI: 10.1002/cbic.202000647] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 10/25/2020] [Indexed: 12/23/2022]
Abstract
Type-III copper enzymes like polyphenol oxidases (PPOs) are ubiquitous among organisms and play a significant role in the formation of pigments. PPOs comprise different enzyme groups, including tyrosinases (TYRs) and catechol oxidases (COs). TYRs catalyze the o-hydroxylation of monophenols and the oxidation of o-diphenols to the corresponding o-quinones (EC 1.14.18.1). In contrast, COs only catalyze the oxidation of o-diphenols to the corresponding o-quinones (EC 1.10.3.1). To date (August 2020), 102 PDB entries encompassing 18 different proteins from 16 organisms and several mutants have been reported, identifying key residues for tyrosinase activity. The structural similarity between TYRs and COs, especially within and around the active center, complicates the elucidation of their modes of action on a structural basis. However, mutagenesis studies illuminate residues that influence the two activities and show that crystallography on its own cannot elucidate the enzymatic activity mode. Several amino acid residues around the dicopper active center have been proposed to play an essential role in the two different activities. Herein, we critically review the role of all residues identified so far that putatively affect the two activities of PPOs.
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Affiliation(s)
- Ioannis Kampatsikas
- Universität WienFakultät für ChemieInstitut für Biophysikalische ChemieAlthanstraße 141090WienAustria
| | - Annette Rompel
- Universität WienFakultät für ChemieInstitut für Biophysikalische ChemieAlthanstraße 141090WienAustria
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23
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Mendez R, Iqbal S, Vishnopolska S, Martinez C, Dibner G, Aliano R, Zaiat J, Biagioli G, Fernandez C, Turjanski A, Campbell AJ, Mercado G, Marti MA. Oculocutaneous albinism type 1B associated with a functionally significant tyrosinase gene polymorphism detected with Whole Exome Sequencing. Ophthalmic Genet 2021; 42:291-295. [PMID: 33599182 DOI: 10.1080/13816810.2021.1888129] [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] [Indexed: 10/22/2022]
Abstract
Background: Oculocutaneous albinism (OCA) is a Mendelian disorder characterized by hypopigmentation of the skin, hair, and eyes, hypoplastic fovea, and low vision, known to be caused by mutations in the Tyrosinase (TYR) gene. Among the known TYR variants, some reduce but do not completely eliminate tyrosinase activity, allowing residual production of melanin and resulting in a contradictory assignment as either pathogenic or benign, preventing a precise clinical diagnostic.Materials and Methods: In the present work, we performed Whole Exome Sequencing and subsequent Sanger sequencing in a young male clinically diagnosed with OCA.Results: Whole-exome sequencing analysis revealed the identification of two variants in trans in TYR. The first, corresponds to a known pathogenic variant G47D, while the second S192Y, was considered a polymorphism due to its relatively high frequency in the European population.Conclusion: The lack of other pathogenic variants in TYR, the reported reduced enzymatic activity (ca. 40% respect to wt) for S192Y, together with the structural in-silico analysis strongly suggest that both reported variants are jointly disease-causing and that S192Y should be considered as likely pathogenic, especially when it is found in trans with a null variant.
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Affiliation(s)
- Rodrigo Mendez
- Centro Nacional de Genética Médica "Dr. Eduardo E. Castilla", ANLIS, Buenos Aires, Argentina
| | - Sumaiya Iqbal
- Center for Development of Therapeutics, Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA.,Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA.,Analytic and Translational Genetics Unit, Massachusetts General Hospital, Boston, Massachusetts, USA
| | | | - Cinthia Martinez
- Centro Nacional de Genética Médica "Dr. Eduardo E. Castilla", ANLIS, Buenos Aires, Argentina
| | - Glenda Dibner
- Departamento de Oftalmología, Hospital Rivadavia, Buenos Aires, Argentina
| | - Rocio Aliano
- Departamento de Oftalmología, Hospital Rivadavia, Buenos Aires, Argentina
| | - Jonathan Zaiat
- Departamento de Química Biológica, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN) CONICET, Ciudad Universitaria, Ciudad Autónoma de Buenos Aires, Buenos Aires, Argentina
| | - Germán Biagioli
- Universidad de Buenos Aires, Buenos Aires, Argentina.,Departamento de Bioinformática, Bitgenia, Buenos Aires, Argentina
| | | | - Adrian Turjanski
- Departamento de Química Biológica, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN) CONICET, Ciudad Universitaria, Ciudad Autónoma de Buenos Aires, Buenos Aires, Argentina
| | - Arthur J Campbell
- Center for Development of Therapeutics, Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA.,Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Graciela Mercado
- Centro Nacional de Genética Médica "Dr. Eduardo E. Castilla", ANLIS, Buenos Aires, Argentina
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24
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Li L, Cai Y, Sun X, Du X, Jiang Z, Ni H, Yang Y, Chen F. Tyrosinase inhibition by p-coumaric acid ethyl ester identified from camellia pollen. Food Sci Nutr 2021; 9:389-400. [PMID: 33473301 PMCID: PMC7802545 DOI: 10.1002/fsn3.2004] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/27/2020] [Accepted: 10/27/2020] [Indexed: 01/12/2023] Open
Abstract
A tyrosinase inhibitor was separated from camellia pollen with the aid of solvent fraction, macroporous adsorptive resin chromatography, and high-speed countercurrent chromatography. The inhibitor was identified to be p-coumaric acid ethyl ester (p-CAEE) by nuclear magnetic resonance and mass spectrum. Its inhibitory activity (IC50 = 4.89 μg/ml) was about 10-fold stronger than arbutin (IC50 = 51.54 μg/ml). The p-CAEE inhibited tyrosinase in a noncompetitive model with the K I and K m of 1.83 μg/ml and 0.52 mM, respectively. Fluorescence spectroscopy analysis showed the p-CAEE quenched an intrinsic fluorescence tyrosinase. UV-Vis spectroscopy analysis showed the p-CAEE did not interact with copper ions of the enzyme. Docking simulation implied the p-CAEE induced a conformational change in the catalytic region and thus changed binding forces of L-tyrosine. Our findings suggest that p-CAEE plays an important role in inhibiting tyrosinase and provides a reference for developing pharmaceutical, cosmetic, and fruit preservation products using pollen.
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Affiliation(s)
- Lijun Li
- College of Food and Biological EngineeringJimei UniversityXiamenChina
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme EngineeringXiamenChina
- Research Center of Food Biotechnology of Xiamen CityXiamenChina
| | - Yuchen Cai
- College of Food and Biological EngineeringJimei UniversityXiamenChina
| | - Xu Sun
- College of Food and Biological EngineeringJimei UniversityXiamenChina
| | - Xiping Du
- College of Food and Biological EngineeringJimei UniversityXiamenChina
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme EngineeringXiamenChina
- Research Center of Food Biotechnology of Xiamen CityXiamenChina
| | - Zedong Jiang
- College of Food and Biological EngineeringJimei UniversityXiamenChina
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme EngineeringXiamenChina
- Research Center of Food Biotechnology of Xiamen CityXiamenChina
| | - Hui Ni
- College of Food and Biological EngineeringJimei UniversityXiamenChina
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme EngineeringXiamenChina
- Research Center of Food Biotechnology of Xiamen CityXiamenChina
| | - Yuanfan Yang
- College of Food and Biological EngineeringJimei UniversityXiamenChina
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme EngineeringXiamenChina
- Research Center of Food Biotechnology of Xiamen CityXiamenChina
| | - Feng Chen
- College of Food and Biological EngineeringJimei UniversityXiamenChina
- Department of Food, Nutrition and Packaging SciencesClemson UniversityClemsonSCUSA
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25
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Gahlot DK, Taheri N, Mahato DR, Francis MS. Bioengineering of non-pathogenic Escherichia coli to enrich for accumulation of environmental copper. Sci Rep 2020; 10:20327. [PMID: 33230130 PMCID: PMC7683528 DOI: 10.1038/s41598-020-76178-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 10/22/2020] [Indexed: 11/09/2022] Open
Abstract
Heavy metal sequestration from industrial wastes and agricultural soils is a long-standing challenge. This is more critical for copper since copper pollution is hazardous both for the environment and for human health. In this study, we applied an integrated approach of Darwin’s theory of natural selection with bacterial genetic engineering to generate a biological system with an application for the accumulation of Cu2+ ions. A library of recombinant non-pathogenic Escherichia coli strains was engineered to express seven potential Cu2+ binding peptides encoded by a ‘synthetic degenerate’ DNA motif and fused to Maltose Binding Protein (MBP). Most of these peptide-MBP chimeras conferred tolerance to high concentrations of copper sulphate, and in certain cases in the order of 160-fold higher than the recognised EC50 toxic levels of copper in soils. UV–Vis spectroscopic analysis indicated a molar ratio of peptide-copper complexes, while a combination of bioinformatics-based structure modelling, Cu2+ ion docking, and MD simulations of peptide-MBP chimeras corroborated the extent of Cu2+ binding among the peptides. Further, in silico analysis predicted the peptides possessed binding affinity toward a broad range of divalent metal ions. Thus, we report on an efficient, cost-effective, and environment-friendly prototype biological system that is potentially capable of copper bioaccumulation, and which could easily be adapted for the removal of other hazardous heavy metals or the bio-mining of rare metals.
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Affiliation(s)
- Dharmender K Gahlot
- Department of Biology, University of York, Wentworth Way, York, YO10 5DD, UK. .,Department of Molecular Biology, Umeå University, 90187, Umeå, Sweden.
| | - Nayyer Taheri
- Department of Molecular Biology, Umeå University, 90187, Umeå, Sweden
| | | | - Matthew S Francis
- Department of Molecular Biology, Umeå University, 90187, Umeå, Sweden
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26
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Zeng HJ, Sun DQ, Chu SH, Zhang JJ, Hu GZ, Yang R. Inhibitory effects of four anthraquinones on tyrosinase activity: Insight from spectroscopic analysis and molecular docking. Int J Biol Macromol 2020; 160:153-163. [DOI: 10.1016/j.ijbiomac.2020.05.193] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 05/21/2020] [Accepted: 05/22/2020] [Indexed: 11/29/2022]
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27
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Fujieda N, Umakoshi K, Ochi Y, Nishikawa Y, Yanagisawa S, Kubo M, Kurisu G, Itoh S. Copper–Oxygen Dynamics in the Tyrosinase Mechanism. Angew Chem Int Ed Engl 2020; 59:13385-13390. [DOI: 10.1002/anie.202004733] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Indexed: 12/14/2022]
Affiliation(s)
- Nobutaka Fujieda
- Department of Applied Life Sciences Graduate School of Life and Environmental Sciences Osaka Prefecture University 1-1 Gakuen-cho, Naka-ku, Sakai-shi Osaka 599-8531 Japan
| | - Kyohei Umakoshi
- Department of Material and Life Science Graduate School of Engineering Osaka University 2-1 Yamada-oka, Suita Osaka 565-0871 Japan
| | - Yuta Ochi
- Department of Applied Life Sciences Graduate School of Life and Environmental Sciences Osaka Prefecture University 1-1 Gakuen-cho, Naka-ku, Sakai-shi Osaka 599-8531 Japan
| | - Yosuke Nishikawa
- Institute for Protein Research Osaka University 3-2 Yamada-oka, Suita Osaka 565-0871 Japan
| | - Sachiko Yanagisawa
- Graduate School of Life Science University of Hyogo 3-2-1 Kouto, Kamigori-cho, Ako-gun Hyogo 678-1297 Japan
| | - Minoru Kubo
- Graduate School of Life Science University of Hyogo 3-2-1 Kouto, Kamigori-cho, Ako-gun Hyogo 678-1297 Japan
| | - Genji Kurisu
- Institute for Protein Research Osaka University 3-2 Yamada-oka, Suita Osaka 565-0871 Japan
| | - Shinobu Itoh
- Department of Material and Life Science Graduate School of Engineering Osaka University 2-1 Yamada-oka, Suita Osaka 565-0871 Japan
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28
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Fujieda N, Umakoshi K, Ochi Y, Nishikawa Y, Yanagisawa S, Kubo M, Kurisu G, Itoh S. Copper–Oxygen Dynamics in the Tyrosinase Mechanism. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004733] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Nobutaka Fujieda
- Department of Applied Life Sciences Graduate School of Life and Environmental Sciences Osaka Prefecture University 1-1 Gakuen-cho, Naka-ku, Sakai-shi Osaka 599-8531 Japan
| | - Kyohei Umakoshi
- Department of Material and Life Science Graduate School of Engineering Osaka University 2-1 Yamada-oka, Suita Osaka 565-0871 Japan
| | - Yuta Ochi
- Department of Applied Life Sciences Graduate School of Life and Environmental Sciences Osaka Prefecture University 1-1 Gakuen-cho, Naka-ku, Sakai-shi Osaka 599-8531 Japan
| | - Yosuke Nishikawa
- Institute for Protein Research Osaka University 3-2 Yamada-oka, Suita Osaka 565-0871 Japan
| | - Sachiko Yanagisawa
- Graduate School of Life Science University of Hyogo 3-2-1 Kouto, Kamigori-cho, Ako-gun Hyogo 678-1297 Japan
| | - Minoru Kubo
- Graduate School of Life Science University of Hyogo 3-2-1 Kouto, Kamigori-cho, Ako-gun Hyogo 678-1297 Japan
| | - Genji Kurisu
- Institute for Protein Research Osaka University 3-2 Yamada-oka, Suita Osaka 565-0871 Japan
| | - Shinobu Itoh
- Department of Material and Life Science Graduate School of Engineering Osaka University 2-1 Yamada-oka, Suita Osaka 565-0871 Japan
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