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Liu Y, Wang D, Li J, Zhang Z, Wang Y, Qiu C, Sun Y, Pan C. Research progress on the functions and biosynthesis of theaflavins. Food Chem 2024; 450:139285. [PMID: 38631203 DOI: 10.1016/j.foodchem.2024.139285] [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: 12/22/2023] [Revised: 03/28/2024] [Accepted: 04/07/2024] [Indexed: 04/19/2024]
Abstract
Theaflavins are beneficial to human health due to various bioactivities. Biosynthesis of theaflavins using polyphenol oxidase (PPO) is advantageous due to cost effectiveness and environmental friendliness. In this review, studies on the mechanism of theaflavins formation, the procedures to screen and prepare PPOs, optimization of reaction systems and immobilization of PPOs were described. The challenges associated with the mass biosynthesis of theaflavins, such as poor enzyme activity, undesirable subproducts and inclusion bodies of recombinant PPOs were presented. Further strategies to solve these challenges and improve theaflavins production, including enzyme engineering, immobilization enzyme technology, water-immiscible solvent-water biphasic systems and recombinant enzyme technology, were proposed.
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Affiliation(s)
- Yufeng Liu
- College of Food and Biological Engineering (Liquor College), Henan University of Animal Husbandry and Economy, Zhengzhou 450046, China
| | - Dongyang Wang
- College of Food and Biological Engineering (Liquor College), Henan University of Animal Husbandry and Economy, Zhengzhou 450046, China
| | - Jing Li
- College of Food and Biological Engineering (Liquor College), Henan University of Animal Husbandry and Economy, Zhengzhou 450046, China
| | - Zhen Zhang
- College of Food and Biological Engineering (Liquor College), Henan University of Animal Husbandry and Economy, Zhengzhou 450046, China
| | - Yali Wang
- College of Food and Biological Engineering (Liquor College), Henan University of Animal Husbandry and Economy, Zhengzhou 450046, China
| | - Chenxi Qiu
- College of Food and Biological Engineering (Liquor College), Henan University of Animal Husbandry and Economy, Zhengzhou 450046, China
| | - Yujiao Sun
- College of Food and Biological Engineering (Liquor College), Henan University of Animal Husbandry and Economy, Zhengzhou 450046, China
| | - Chunmei Pan
- College of Food and Biological Engineering (Liquor College), Henan University of Animal Husbandry and Economy, Zhengzhou 450046, China.
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2
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Guo J, Liu S, Guo Y, Bai L, Ho CT, Bai N. Chemical characterization, multivariate analysis and comparison of biological activities of different parts of Fraxinus mandshurica. Biomed Chromatogr 2024; 38:e5861. [PMID: 38501361 DOI: 10.1002/bmc.5861] [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: 11/21/2023] [Revised: 01/22/2024] [Accepted: 02/22/2024] [Indexed: 03/20/2024]
Abstract
Fraxinus mandshurica (Oleaceae) is used as a traditional medicinal plant for the treatment of red eyes, menstrual disorders, excessive leucorrhea, chronic bronchitis and psoriasis. To perform chemical characterization of the secondary metabolites of F. mandshurica roots, bark, stems and leaves, 32 samples were collected from eight provinces in this study. A total of 64 chemical components were detected from four different parts of F. mandshurica by ultra-performance liquid chromatography-quadrupole time-of-flight mass spectrometry. Meanwhile, a total of nine secoiridoids were obtained by natural product chemical extraction, isolation and identification methods. Quantitative analysis by high-performance liquid chromatography-diode array detection-mass spectrometry showed the highest total content of secoiridoids in the bark, which is also consistent with the traditional medicinal parts. The results of methodological validation showed that the correlation coefficient (R2) values were all >0.9993, indicating a good linear range of the standard curve, while the relative standard deviations of precision, reproducibility and stability were <3%, and the spiked recoveries ranged from 98.22 to 102.27%, indicating that the experimental method was reliable and stable. In addition, fingerprinting and a heatmap were established to demonstrate the content trends of F. mandshurica more visually from different origins. Multivariate analysis, including principal component analysis and partial least squares discriminant analysis, was performed to determine the chemical characteristics of different parts of F. mandshurica, and six characteristic secoiridoids that could be used to distinguish different origins were screened. Finally, the inhibition of tyrosinase, α-glucosidase, acetylcholinesterase and pancreatic lipase activities by the nine characteristic compounds and extracts from different parts were investigated, and the results showed that they all exhibited different degrees of enzyme activity inhibition and thus have potential applications in whitening and blemish removal, hypoglycemia, anti-Alzheimer's disease and anti-obesity as a new source of natural enzyme activity inhibitors. This study establishes an identification and evaluation method applicable to phytochemistry of different origins, which is a guideline for quality control, origin evaluation and clinical application of traditional medicinal plants. This is also an unprecedented study on the identification of the chemical composition of different parts of F. mandshurica, characteristic compounds and the inhibition of enzyme activity of extracts from different parts.
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Affiliation(s)
- Jianjin Guo
- College of Chemical Engineering, Northwest University, Xi'an, Shaanxi, China
- College of Food Science and Technology, Northwest University, Xi'an, Shaanxi, China
| | - Shaojing Liu
- College of Food Science and Technology, Northwest University, Xi'an, Shaanxi, China
| | - Yan Guo
- College of Food Science and Technology, Northwest University, Xi'an, Shaanxi, China
| | - Lu Bai
- College of Food Science and Technology, Northwest University, Xi'an, Shaanxi, China
| | - Chi-Tang Ho
- Department of Food Science, Rutgers University, New Brunswick, NJ, USA
| | - Naisheng Bai
- College of Food Science and Technology, Northwest University, Xi'an, Shaanxi, China
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Lee J, Lee SG, Kim BS, Park S, Sundaram MN, Kim BG, Kim CY, Hwang NS. Paintable Decellularized-ECM Hydrogel for Preventing Cardiac Tissue Damage. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2307353. [PMID: 38502886 DOI: 10.1002/advs.202307353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 02/07/2024] [Indexed: 03/21/2024]
Abstract
The tissue-specific heart decellularized extracellular matrix (hdECM) demonstrates a variety of therapeutic advantages, including fibrosis reduction and angiogenesis. Consequently, recent research for myocardial infarction (MI) therapy has utilized hdECM with various delivery techniques, such as injection or patch implantation. In this study, a novel approach for hdECM delivery using a wet adhesive paintable hydrogel is proposed. The hdECM-containing paintable hydrogel (pdHA_t) is simply applied, with no theoretical limit to the size or shape, making it highly beneficial for scale-up. Additionally, pdHA_t exhibits robust adhesion to the epicardium, with a minimal swelling ratio and sufficient adhesion strength for MI treatment when applied to the rat MI model. Moreover, the adhesiveness of pdHA_t can be easily washed off to prevent undesired adhesion with nearby organs, such as the rib cages and lungs, which can result in stenosis. During the 28 days of in vivo analysis, the pdHA_t not only facilitates functional regeneration by reducing ventricular wall thinning but also promotes neo-vascularization in the MI region. In conclusion, the pdHA_t presents a promising strategy for MI treatment and cardiac tissue regeneration, offering the potential for improved patient outcomes and enhanced cardiac function post-MI.
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Affiliation(s)
- Jaewoo Lee
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, 151-742, Republic of Korea
| | - Seul-Gi Lee
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul, 143-701, Republic of Korea
| | - Beom-Seok Kim
- Interdisciplinary Program in Bioengineering, Seoul National University, Seoul, 151-742, Republic of Korea
- Research Division, EGC Therapeutics, Seoul, 08790, Republic of Korea
| | - Shinhye Park
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul, 143-701, Republic of Korea
| | - M Nivedhitha Sundaram
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, 151-742, Republic of Korea
| | - Byung-Gee Kim
- Research Division, EGC Therapeutics, Seoul, 08790, Republic of Korea
- Institute of Molecular Biology and Genetics, Institute for Sustainable Development (ISD), Seoul National University, Seoul, 08826, Republic of Korea
- Bio-MAX/N-Bio, Institute of BioEngineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - C-Yoon Kim
- College of Veterinary Medicine, Konkuk University, Seoul, 05029, Republic of Korea
| | - Nathaniel S Hwang
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, 151-742, Republic of Korea
- Interdisciplinary Program in Bioengineering, Seoul National University, Seoul, 151-742, Republic of Korea
- Bio-MAX/N-Bio, Institute of BioEngineering, Seoul National University, Seoul, 08826, Republic of Korea
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Guo J, Gao J, Guo Y, Bai L, Ho CT, Bai N. Characterization, multivariate analysis and bioactivity evaluation of coumarins in the bark of Fraxinus mandshurica. Fitoterapia 2024; 174:105865. [PMID: 38382892 DOI: 10.1016/j.fitote.2024.105865] [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: 06/15/2023] [Revised: 02/13/2024] [Accepted: 02/17/2024] [Indexed: 02/23/2024]
Abstract
The bark of Fraxinus mandshurica is a traditional folk herb used to clear heat and dry dampness. To investigate the differences in coumarins content in the bark of F. mandshurica, 24 batches of samples from four origins were collected and analyzed. Eight coumarins were obtained by traditional natural product extraction, isolation and identification techniques and quantified by high performance liquid chromatography-photodiode array (HPLC-DAD). The quantitative results showed that the overall content of compound 30 (Fraxinol) was higher at 100.23 mg/g, while the overall content of compound 23 (Cichoriin) was lower, which may be related to environmental factors in different regions. The method validation showed that the linear range of the eight standards was between 10 and 2500 μg/mL with correlation coefficient (R2) values >0.9991; the relative standard deviation (RSD, %) values of intra-day precision were between 0.35 and 1.38, while the RSD values of inter-day precision were between 0. 29-1.78; the RSD (%) values for the reproducibility experiments ranged from 0.29 to 1.87, while the RSD (%) values for the stability experiments ranged from 0.22 to 2.33; the spiked recovery of the samples ranged from 98.65 to 101.34%, and the RSD (%) values ranged from 0.22 to 1.96. The method validation results showed that the instrument used for the analysis had good precision, the reproducibility and stability of the samples were good, and the accuracy of the experimental method was high. In addition, a total of 54 chemical components were identified from F. mandshurica bark by ultra performance liquid chromatography-electrospray quadrupole time-of-flight mass spectrometry (UPLC-ESI-Q-TOF-MS). Based on this, fingerprinting, heatmap and multivariate analysis, including principal component analysis (PCA) and partial least squares discriminant analysis (PLS-DA), were established for 24 batches of samples, and four marker compounds that could be used to distinguish different origins of F. mandshurica were screened. To further investigate the bioactivities of the eight coumarins, in vitro enzyme activity inhibition studies were performed, and the results showed that they all exhibited different degrees of inhibition of acetylcholinesterase, tyrosinase and α-glucosidase, thus having potential applications in the treatment of Alzheimer's disease, blemish whitening and anti-diabetes, and becoming a new source of natural enzyme activity inhibitors. This study established an identification and evaluation method applicable to plants of different origins, which provides a strong reference for quality control, origin evaluation and clinical application of traditional medicinal plants.
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Affiliation(s)
- Jianjin Guo
- College of Chemical Engineering, Northwest University, 229 Taibai North Road, Xi'an, Shaanxi 710069, China; College of Food Science and Technology, Northwest University, 229 Taibai North Road, Xi'an, Shaanxi 710069, China
| | - Jing Gao
- College of Food Science and Technology, Northwest University, 229 Taibai North Road, Xi'an, Shaanxi 710069, China
| | - Yan Guo
- College of Food Science and Technology, Northwest University, 229 Taibai North Road, Xi'an, Shaanxi 710069, China
| | - Lu Bai
- College of Food Science and Technology, Northwest University, 229 Taibai North Road, Xi'an, Shaanxi 710069, China
| | - Chi-Tang Ho
- Department of Food Science, Rutgers University, 65 Dudley Road, New Brunswick, NJ 08901, USA
| | - Naisheng Bai
- College of Food Science and Technology, Northwest University, 229 Taibai North Road, Xi'an, Shaanxi 710069, China.
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Chai WM, Bai Q, Pan Q, Wang L, Zhu D. 6,7-Bis-(2-methoxyethoxy)-4(3H)-quinazolinone as a novel inhibitor of tyrosinase and potential anti-browning agent of fresh-cut apples. J Biosci Bioeng 2024; 137:165-172. [PMID: 38212152 DOI: 10.1016/j.jbiosc.2023.12.006] [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: 08/30/2023] [Revised: 12/04/2023] [Accepted: 12/08/2023] [Indexed: 01/13/2024]
Abstract
6,7-Bis-(2-methoxyethoxy)-4(3H)-quinazolinone (BMEQ) was selected from quinazolinones for its strong tyrosinase inhibitory activity (IC50 = 160 ± 6 μM). It suppressed tyrosinase activity in a competitive way and quenched the fluorescence of the enzyme through a static mechanism. The binding of BMEQ to tyrosinase increased the hydrophobicity of the latter and facilitated non-radiative energy transfer between them. The formation of BMEQ-tyrosinase complex was driven by hydrogen bonds and hydrophobic interactions, and it loosened the basic framework structure of tyrosinase, affecting the conformation of the enzyme, and leading to a decrease in tyrosinase activity. In addition, the BMEQ postponed the oxidation of phenolics and flavonoids by inhibiting polyphenol oxidase (PPO) and peroxidase (POD), which resulted in the inhibition of the browning of fresh-cut apples. This study identified a novel tyrosinase inhibitor BMEQ and verified its potential application for improving the preservation of postharvest fruits.
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Affiliation(s)
- Wei-Ming Chai
- Jiangxi Key Laboratory of Organic Chemistry, Institute of Organic Functional Molecules, Jiangxi Science and Technology Normal University, Nanchang, Jiangxi 330013, China; College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Qiuhan Bai
- College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Qiuxia Pan
- College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Linjun Wang
- College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Du Zhu
- Jiangxi Key Laboratory of Organic Chemistry, Institute of Organic Functional Molecules, Jiangxi Science and Technology Normal University, Nanchang, Jiangxi 330013, China; College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi 330022, China.
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6
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Boateng ST, Roy T, Torrey K, Owunna U, Banang-Mbeumi S, Basnet D, Niedda E, Alexander AD, Hage DE, Atchimnaidu S, Nagalo BM, Aryal D, Findley A, Seeram NP, Efimova T, Sechi M, Hill RA, Ma H, Chamcheu JC, Murru S. Synthesis, in silico modelling, and in vitro biological evaluation of substituted pyrazole derivatives as potential anti-skin cancer, anti-tyrosinase, and antioxidant agents. J Enzyme Inhib Med Chem 2023; 38:2205042. [PMID: 37184042 PMCID: PMC10187093 DOI: 10.1080/14756366.2023.2205042] [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: 11/23/2022] [Accepted: 04/16/2023] [Indexed: 05/16/2023] Open
Abstract
Twenty-five azole compounds (P1-P25) were synthesised using regioselective base-metal catalysed and microwave-assisted approaches, fully characterised by high-resolution mass spectrometry (HRMS), nuclear magnetic resonance (NMR), and infrared spectra (IR) analyses, and evaluated for anticancer, anti-tyrosinase, and anti-oxidant activities in silico and in vitro. P25 exhibited potent anticancer activity against cells of four skin cancer (SC) lines, with selectivity for melanoma (A375, SK-Mel-28) or non-melanoma (A431, SCC-12) SC cells over non-cancerous HaCaT-keratinocytes. Clonogenic, scratch-wound, and immunoblotting assay data were consistent with anti-proliferative results, expression profiling therewith implicating intrinsic and extrinsic apoptosis activation. In a mushroom tyrosinase inhibition assay, P14 was most potent among the compounds (half-maximal inhibitory concentration where 50% of cells are dead, IC50 15.9 μM), with activity greater than arbutin and kojic acid. Also, P6 exhibited noteworthy free radical-scavenging activity. Furthermore, in silico docking and absorption, distribution, metabolism, excretion, and toxicity (ADMET) simulations predicted prominent-phenotypic actives to engage diverse cancer/hyperpigmentation-related targets with relatively high affinities. Altogether, promising early-stage hits were identified - some with multiple activities - warranting further hit-to-lead optimisation chemistry with further biological evaluations, towards identifying new skin-cancer and skin-pigmentation renormalising agents.
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Affiliation(s)
- Samuel T. Boateng
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana at Monroe, Monroe, LA, USA
| | - Tithi Roy
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana at Monroe, Monroe, LA, USA
| | - Kara Torrey
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, Bioactive Botanical Research Laboratory, University of Rhode Island, Kingston, RI, USA
| | - Uchechi Owunna
- School of Sciences, College of Arts, Education and Sciences, University of Louisiana at Monroe, Monroe, LA, USA
| | - Sergette Banang-Mbeumi
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana at Monroe, Monroe, LA, USA
- School of Nursing and Allied Health Sciences, Louisiana Delta Community College, Monroe, LA, USA
| | - David Basnet
- School of Sciences, College of Arts, Education and Sciences, University of Louisiana at Monroe, Monroe, LA, USA
| | - Eleonora Niedda
- Department of Medicine, Surgery and Pharmacy, University of Sassari, Sassari, Italy
| | - Alexis D. Alexander
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana at Monroe, Monroe, LA, USA
| | - Denzel El Hage
- School of Sciences, College of Arts, Education and Sciences, University of Louisiana at Monroe, Monroe, LA, USA
| | - Siriki Atchimnaidu
- School of Sciences, College of Arts, Education and Sciences, University of Louisiana at Monroe, Monroe, LA, USA
| | - Bolni Marius Nagalo
- Department of Pathology, University of Arkansas for Medical Sciences (UAMS), Little Rock, AR, USA
- The Winthrop P. Rockefeller Cancer Institute, UAMS, Little Rock, AR, USA
| | - Dinesh Aryal
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana at Monroe, Monroe, LA, USA
- Department of Biomedical Affairs and Research, Edward Via College of Osteopathic Medicine, Monroe, LA, USA
| | - Ann Findley
- School of Sciences, College of Arts, Education and Sciences, University of Louisiana at Monroe, Monroe, LA, USA
| | - Navindra P. Seeram
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, Bioactive Botanical Research Laboratory, University of Rhode Island, Kingston, RI, USA
| | - Tatiana Efimova
- Department of Biomedical Engineering, Northwestern University, Chicago, IL, USA
| | - Mario Sechi
- Department of Medicine, Surgery and Pharmacy, University of Sassari, Sassari, Italy
| | - Ronald A. Hill
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana at Monroe, Monroe, LA, USA
| | - Hang Ma
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, Bioactive Botanical Research Laboratory, University of Rhode Island, Kingston, RI, USA
| | - Jean Christopher Chamcheu
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana at Monroe, Monroe, LA, USA
| | - Siva Murru
- School of Sciences, College of Arts, Education and Sciences, University of Louisiana at Monroe, Monroe, LA, USA
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Tang MG, Zhang S, Xiong LG, Zhou JH, Huang JA, Zhao AQ, Liu ZH, Liu AL. A comprehensive review of polyphenol oxidase in tea (Camellia sinensis): Physiological characteristics, oxidation manufacturing, and biosynthesis of functional constituents. Compr Rev Food Sci Food Saf 2023; 22:2267-2291. [PMID: 37043598 DOI: 10.1111/1541-4337.13146] [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: 06/14/2022] [Revised: 03/07/2023] [Accepted: 03/12/2023] [Indexed: 04/14/2023]
Abstract
Polyphenol oxidase (PPO) is a metalloenzyme with a type III copper core that is abundant in nature. As one of the most essential enzymes in the tea plant (Camellia sinensis), the further regulation of PPO is critical for enhancing defensive responses, cultivating high-quality germplasm resources of tea plants, and producing tea products that are both functional and sensory qualities. Due to their physiological and pharmacological values, the constituents from the oxidative polymerization of PPO in tea manufacturing may serve as functional foods to prevent and treat chronic non-communicable diseases. However, current knowledge of the utilization of PPO in the tea industry is only available from scattered sources, and a more comprehensive study is required to reveal the relationship between PPO and tea obviously. A more comprehensive review of the role of PPO in tea was reported for the first time, as its classification, catalytic mechanism, and utilization in modulating tea flavors, compositions, and nutrition, along with the relationships between PPO-mediated enzymatic reactions and the formation of functional constituents in tea, and the techniques for the modification and application of PPO based on modern enzymology and synthetic biology are summarized and suggested in this article.
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Affiliation(s)
- Meng-Ge Tang
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients, Co-Innovation Centre of Education Ministry for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, Hunan, China
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan, China
- Shaanxi Engineering Laboratory for Food Green Processing and Safety Control, and Shaanxi Key Laboratory for Hazard Factors Assessment in Processing and Storage of Agricultural Products, College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi, China
| | - Sheng Zhang
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients, Co-Innovation Centre of Education Ministry for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, Hunan, China
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan, China
| | - Li-Gui Xiong
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients, Co-Innovation Centre of Education Ministry for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, Hunan, China
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan, China
| | - Jing-Hui Zhou
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients, Co-Innovation Centre of Education Ministry for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, Hunan, China
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan, China
| | - Jian-An Huang
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients, Co-Innovation Centre of Education Ministry for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, Hunan, China
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan, China
| | - Ai-Qing Zhao
- Shaanxi Engineering Laboratory for Food Green Processing and Safety Control, and Shaanxi Key Laboratory for Hazard Factors Assessment in Processing and Storage of Agricultural Products, College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi, China
| | - Zhong-Hua Liu
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients, Co-Innovation Centre of Education Ministry for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, Hunan, China
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, Hunan, China
| | - Ai-Ling Liu
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients, Co-Innovation Centre of Education Ministry for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, Hunan, China
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, Hunan, China
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8
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Tang W, Zhang L, Chen Q, Han M, Chen C, Liu W. Determination of monophenolase activity based on backpropagation neural network analysis of three-dimensional fluorescence spectroscopy. J Biotechnol 2023; 365:11-19. [PMID: 36775069 DOI: 10.1016/j.jbiotec.2023.02.001] [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: 12/01/2022] [Revised: 01/11/2023] [Accepted: 02/07/2023] [Indexed: 02/12/2023]
Abstract
Tyrosinase is pivotal for melanin formation. Measuring monophenolase activity is of great importance for both fundamental research and industrial applications. For the first time, a backpropagation (BP) artificial neural network with three-dimensional fluorescence spectroscopy was applied for the real-time determination of tyrosinase monophenolase activity. Principal component analysis (PCA) was utilized for the dimension reduction of three-dimensional fluorescence data. The four principal components served as inputs for the neural network. Network parameters were optimized using a genetic algorithm (GA). BP learning algorithm was applied to train the network model to determine tyrosine levels in a binary mixture containing tyrosine and L-DOPA without any chemical separation. The time course of tyrosine consumption by monophenolase was determined to calculate the initial velocity of the enzymatic reaction. The limit of detection of the monophenolase assay was 0.0615 U·mL-1. This combined strategy of PCA, GAs, and BP artificial neural networks for three-dimensional fluorescence spectroscopy was efficient for the real-time and in-situ determination of monophenolase activity in a cascade reaction.
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Affiliation(s)
- Weikang Tang
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Ling Zhang
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Qinfei Chen
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Mengqi Han
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Chan Chen
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Wenbin Liu
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, China.
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9
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Yang K, Liu D, Teng R, Li C, Fan Z, Du J. An Antibacterial Polypeptide Coating Prepared by In Situ Enzymatic Polymerization for Preventing Delayed Infection of Implants. ACS Biomater Sci Eng 2023; 9:1900-1908. [PMID: 36877006 DOI: 10.1021/acsbiomaterials.3c00131] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
Abstract
Delayed implant-associated infection is an important challenge, as the treatment involves a high risk of implant replacement. Mussel-inspired antimicrobial coatings can be applied to coat a variety of implants in a facile way, but the adhesive 3,4-dihydroxyphenylalanine (DOPA) group is prone to oxidation. Therefore, an antibacterial polypeptide copolymer poly(Phe7-stat-Lys10)-b-polyTyr3 was designed to prepare the implant coating upon tyrosinase-induced enzymatic polymerization for preventing implant-associated infections. Both poly(Phe7-stat-Lys10) and polyTyr3 blocks have specific functions: the former provides intrinsic antibacterial activity with a low risk to induce antimicrobial resistance, and the latter is attachable to the surface of implants to rapidly generate an antibacterial coating by in situ injection of polypeptide copolymer since tyrosine could be oxidized to DOPA under catalyzation of skin tyrosinase. This polypeptide coating with excellent antibacterial effect and desirable biofilm inhibition activity is promising for broad applications in a multitude of biomedical materials to combat delayed infections.
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Affiliation(s)
- Kexin Yang
- Department of Polymeric Materials, School of Materials Science and Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, China
| | - Danqing Liu
- Department of Orthopedics, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, China
| | - Runxin Teng
- Department of Polymeric Materials, School of Materials Science and Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, China
| | - Chang Li
- Department of Orthopedics, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, China.,Institute for Advanced Study, Tongji University, Shanghai 200092, China
| | - Zhen Fan
- Department of Polymeric Materials, School of Materials Science and Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, China.,Institute for Advanced Study, Tongji University, Shanghai 200092, China
| | - Jianzhong Du
- Department of Polymeric Materials, School of Materials Science and Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, China.,Department of Orthopedics, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, China
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10
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Li J, Sun X, Dai J, Yang J, Li L, Zhang Z, Guo J, Bai S, Zheng Y, Shi X. Biomimetic multifunctional hybrid sponge via enzymatic cross-linking to accelerate infected burn wound healing. Int J Biol Macromol 2023; 225:90-102. [PMID: 36509201 DOI: 10.1016/j.ijbiomac.2022.12.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 11/09/2022] [Accepted: 12/03/2022] [Indexed: 12/14/2022]
Abstract
Preparing sponge dressings with stable wet adhesion remains difficult in wound repair, especially in burn wounds with bleeding and large amounts of exudate. In this work, a multifunctional hybrid sponge dressing (DHGT+PHMB+TiO2NPs) with good wet adhesion was developed by combining biomimetic and enzymatic cross-linking reactions. The sponge dressing matrix (DHGT) was prepared by tyrosinase-catalyzed cross-linking of dopamine-modified hyaluronic acid (DOPA-HA) and gelatin. The multifunctional hybrid sponge dressing was obtained by loading polyhexamethylene biguanide (PHMB) and titanium dioxide nanoparticles (TiO2NPs) onto the DHGT matrix. The newly developed sponge dressing exhibited high mechanical properties, good wet adhesion, antibacterial activity, reactive oxygen species (ROS) scavenging, biocompatibility, and excellent hemostasis ability. In vivo studies showed that the multifunctional hybrid sponge dressing could significantly accelerate the healing of infected full-thickness burn wounds by inhibiting bacterial growth, accelerating skin tissue reepithelialization, collagen deposition, and angiogenesis, as well as regulating the expression of inflammatory factors and cytokines.
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Affiliation(s)
- Jingsi Li
- College of Biological Science and Engineering, Fuzhou University, No. 2 Xueyuan Road, Fuzhou 350108, China
| | - Xiaohan Sun
- College of Biological Science and Engineering, Fuzhou University, No. 2 Xueyuan Road, Fuzhou 350108, China
| | - Jiajia Dai
- College of Biological Science and Engineering, Fuzhou University, No. 2 Xueyuan Road, Fuzhou 350108, China
| | - Jianmin Yang
- College of Biological Science and Engineering, Fuzhou University, No. 2 Xueyuan Road, Fuzhou 350108, China; Fujian Key Laboratory of Medical Instrument and Pharmaceutical Technology, Fuzhou University, 10 No. 2 Xueyuan Road, Fuzhou 350108, China.
| | - Liang Li
- College of Biological Science and Engineering, Fuzhou University, No. 2 Xueyuan Road, Fuzhou 350108, China
| | - Zibo Zhang
- College of Biological Science and Engineering, Fuzhou University, No. 2 Xueyuan Road, Fuzhou 350108, China
| | - Jiadong Guo
- College of Biological Science and Engineering, Fuzhou University, No. 2 Xueyuan Road, Fuzhou 350108, China
| | - Shumeng Bai
- College of Biological Science and Engineering, Fuzhou University, No. 2 Xueyuan Road, Fuzhou 350108, China.
| | - Yunquan Zheng
- Fujian Key Laboratory of Medical Instrument and Pharmaceutical Technology, Fuzhou University, 10 No. 2 Xueyuan Road, Fuzhou 350108, China
| | - Xianai Shi
- College of Biological Science and Engineering, Fuzhou University, No. 2 Xueyuan Road, Fuzhou 350108, China; Fujian Key Laboratory of Medical Instrument and Pharmaceutical Technology, Fuzhou University, 10 No. 2 Xueyuan Road, Fuzhou 350108, China.
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11
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Jesuraj A, Hassan U. Point-of-Care Portable 3D-Printed Multispectral Sensor for Real-Time Enzyme Activity Monitoring in Healthcare Applications. BIOSENSORS 2023; 13:120. [PMID: 36671955 PMCID: PMC9856277 DOI: 10.3390/bios13010120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/05/2023] [Accepted: 01/07/2023] [Indexed: 06/17/2023]
Abstract
Absorbance spectroscopy finds many biomedical and physical applications ranging from studying the atomic and molecular details of the analyte to determination of unknown biological species and their concentration or activity in the samples. Commercially available laboratory-based spectrometers are usually bulky and require high power and laborious manual processing, making them unsuitable to be deployed in portable and space-constrained environments, thereby further limiting their utility for real-time on-site monitoring. To address these challenges, here we developed a portable 3D-printed multispectral spectrophotometer based on absorbance spectroscopy for real-time monitoring of enzyme molecular activity. Monitoring enzyme (such as tyrosinase) activity is critical, as it quantifies its reaction rate, which is dependent on many factors such as the enzyme and substrate concentrations, temperature, pH, and other regulators such as inhibitors and effectors. Tyrosinase is a critical enzyme responsible for melanin synthesis in living beings and exhibits enzymatic browning in fruits and vegetables. It finds various commercial applications in the fields of healthcare (skin pigmentation, wound healing, etc.), forensics, and food processing. Here, tyrosinase activity was monitored using a 3D-printed spectral sensor at different rates and compared against measurements obtained from laboratory instruments. The enzyme activity was also studied using kojic acid (i.e., a commonly employed commercial tyrosinase inhibitor) while varying its molar and volume concentrations to control the reaction rate at discrete activity levels. For tyrosinase activity monitoring, the fabricated device has shown significant correlation (R2 = 0.9999) compared to measurements from the standard table-top spectrophotometer. We also provide a performance comparison between the 3D-printed and the laboratory spectrophotometer instruments by studying tyrosinase enzyme activity with and without the influence of an inhibitor. Such a device can be translated into various absorbance spectroscopy-based point-of-care biomedical and healthcare applications.
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Affiliation(s)
- Antony Jesuraj
- Department of Electrical and Computer Engineering, School of Engineering, Rutgers, The State University of New Jersey, New Brunswick, NJ 08854, USA
| | - Umer Hassan
- Department of Electrical and Computer Engineering, School of Engineering, Rutgers, The State University of New Jersey, New Brunswick, NJ 08854, USA
- Global Health Institute, Rutgers, The State University of New Jersey, New Brunswick, NJ 08901, USA
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12
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Wang L, Li N, Yu S, Zhou J. Enhancing caffeic acid production in Escherichia coli by engineering the biosynthesis pathway and transporter. BIORESOURCE TECHNOLOGY 2023; 368:128320. [PMID: 36379296 DOI: 10.1016/j.biortech.2022.128320] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 10/31/2022] [Accepted: 11/01/2022] [Indexed: 06/16/2023]
Abstract
Caffeic acid is a phenylpropanoid which is widely used in medical industry. Microbial fermentation provides a green strategy for producing caffeic acid. To improve the capacity for caffeic acid production in Escherichia coli, the competing pathways for l-tyrosine synthesis were knocked out. The biosynthesis pathway of the cofactor FAD and the expression of previously reported polyphenol transporters were enhanced to promote the production of caffeic acid. Transcriptomics analysis was conducted to mine potential transporters that could further enhance the titer of caffeic acid in engineered E. coli. Transcriptomics data of E. coli under caffeic acid and ferulic acid stress showed that 19 transporters were upregulated. Among them, overexpression of ycjP, which was previously identified as a sugar ABC transporter permease, improved the caffeic acid titer to 775.7 mg/L. The caffeic acid titer was further improved to 7922.0 mg/L in a 5-L fermenter, the highest titer achieved by microorganisms.
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Affiliation(s)
- Lian Wang
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China; Science Center for Future Foods, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Ning Li
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China; Science Center for Future Foods, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Shiqin Yu
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China; Science Center for Future Foods, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Jingwen Zhou
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China; Science Center for Future Foods, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China; Key Laboratory of Industrial Biotechnology, Ministry of Education and School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China; Jiangsu Province Engineering Research Center of Food Synthetic Biotechnology, Jiangnan University, Wuxi 214122, China.
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13
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Canella Vieira C, Jarquin D, do Nascimento EF, Lee D, Zhou J, Smothers S, Zhou J, Diers B, Riechers DE, Xu D, Shannon G, Chen P, Nguyen HT. Identification of genomic regions associated with soybean responses to off-target dicamba exposure. FRONTIERS IN PLANT SCIENCE 2022; 13:1090072. [PMID: 36570921 PMCID: PMC9780662 DOI: 10.3389/fpls.2022.1090072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 11/24/2022] [Indexed: 06/17/2023]
Abstract
The widespread adoption of genetically modified (GM) dicamba-tolerant (DT) soybean was followed by numerous reports of off-target dicamba damage and yield losses across most soybean-producing states. In this study, a subset of the USDA Soybean Germplasm Collection consisting of 382 genetically diverse soybean accessions originating from 15 countries was used to identify genomic regions associated with soybean response to off-target dicamba exposure. Accessions were genotyped with the SoySNP50K BeadChip and visually screened for damage in environments with prolonged exposure to off-target dicamba. Two models were implemented to detect significant marker-trait associations: the Bayesian-information and Linkage-disequilibrium Iteratively Nested Keyway (BLINK) and a model that allows the inclusion of population structure in interaction with the environment (G×E) to account for variable patterns of genotype responses in different environments. Most accessions (84%) showed a moderate response, either moderately tolerant or moderately susceptible, with approximately 8% showing tolerance and susceptibility. No differences in off-target dicamba damage were observed across maturity groups and centers of origin. Both models identified significant associations in regions of chromosomes 10 and 19. The BLINK model identified additional significant marker-trait associations on chromosomes 11, 14, and 18, while the G×E model identified another significant marker-trait association on chromosome 15. The significant SNPs identified by both models are located within candidate genes possessing annotated functions involving different phases of herbicide detoxification in plants. These results entertain the possibility of developing non-GM soybean cultivars with improved tolerance to off-target dicamba exposure and potentially other synthetic auxin herbicides. Identification of genetic sources of tolerance and genomic regions conferring higher tolerance to off-target dicamba may sustain and improve the production of other non-DT herbicide soybean production systems, including the growing niche markets of organic and conventional soybean.
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Affiliation(s)
- Caio Canella Vieira
- Fisher Delta Research, Extension, and Education Center, Division of Plant Science and Technology, University of Missouri, Portageville, MO, United States
| | - Diego Jarquin
- Agronomy Department, University of Florida, Gainesville, FL, United States
| | - Emanuel Ferrari do Nascimento
- Fisher Delta Research, Extension, and Education Center, Division of Plant Science and Technology, University of Missouri, Portageville, MO, United States
| | - Dongho Lee
- Fisher Delta Research, Extension, and Education Center, Division of Plant Science and Technology, University of Missouri, Portageville, MO, United States
| | - Jing Zhou
- Biological Systems Engineering, University of Wisconsin-Madison, Madison, WI, United States
| | - Scotty Smothers
- Fisher Delta Research, Extension, and Education Center, Division of Plant Science and Technology, University of Missouri, Portageville, MO, United States
| | - Jianfeng Zhou
- Division of Plant Science and Technology, University of Missouri, Columbia, MO, United States
| | - Brian Diers
- Department of Crop Sciences, University of Illinois, Urbana, IL, United States
| | - Dean E. Riechers
- Department of Crop Sciences, University of Illinois, Urbana, IL, United States
| | - Dong Xu
- Department of Electrical Engineering and Computer Science, Bond Life Sciences Center, University of Missouri, Columbia, MO, United States
| | - Grover Shannon
- Fisher Delta Research, Extension, and Education Center, Division of Plant Science and Technology, University of Missouri, Portageville, MO, United States
| | - Pengyin Chen
- Fisher Delta Research, Extension, and Education Center, Division of Plant Science and Technology, University of Missouri, Portageville, MO, United States
| | - Henry T. Nguyen
- Division of Plant Science and Technology, University of Missouri, Columbia, MO, United States
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14
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Liu H, Tian X, Liu H, Wang X. Electrochemical biosensor based on tyrosinase-immobilized phase-change microcapsules for ultrasensitive detection of phenolic contaminants under in situ thermal management. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.12.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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15
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Ma Y, Jiang B, Liu K, Li R, Chen L, Liu Z, Xiang G, An J, Luo H, Wu J, Lv C, Pan Y, Ling T, Zhao M. Multi-omics analysis of the metabolism of phenolic compounds in tea leaves by Aspergillus luchuensis during fermentation of pu-erh tea. Food Res Int 2022; 162:111981. [DOI: 10.1016/j.foodres.2022.111981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 08/26/2022] [Accepted: 09/23/2022] [Indexed: 11/28/2022]
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16
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Kipouros I, Stańczak A, Ginsbach JW, Andrikopoulos PC, Rulíšek L, Solomon EI. Elucidation of the tyrosinase/O 2/monophenol ternary intermediate that dictates the monooxygenation mechanism in melanin biosynthesis. Proc Natl Acad Sci U S A 2022; 119:e2205619119. [PMID: 35939688 PMCID: PMC9389030 DOI: 10.1073/pnas.2205619119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 07/05/2022] [Indexed: 11/18/2022] Open
Abstract
Melanins are highly conjugated biopolymer pigments that provide photoprotection in a wide array of organisms, from bacteria to humans. The rate-limiting step in melanin biosynthesis, which is the ortho-hydroxylation of the amino acid L-tyrosine to L-DOPA, is catalyzed by the ubiquitous enzyme tyrosinase (Ty). Ty contains a coupled binuclear copper active site that binds O2 to form a μ:η2:η2-peroxide dicopper(II) intermediate (oxy-Ty), capable of performing the regioselective monooxygenation of para-substituted monophenols to catechols. The mechanism of this critical monooxygenation reaction remains poorly understood despite extensive efforts. In this study, we have employed a combination of spectroscopic, kinetic, and computational methods to trap and characterize the elusive catalytic ternary intermediate (Ty/O2/monophenol) under single-turnover conditions and obtain molecular-level mechanistic insights into its monooxygenation reactivity. Our experimental results, coupled with quantum-mechanics/molecular-mechanics calculations, reveal that the monophenol substrate docks in the active-site pocket of oxy-Ty fully protonated, without coordination to a copper or cleavage of the μ:η2:η2-peroxide O-O bond. Formation of this ternary intermediate involves the displacement of active-site water molecules by the substrate and replacement of their H bonds to the μ:η2:η2-peroxide by a single H bond from the substrate hydroxyl group. This H-bonding interaction in the ternary intermediate enables the unprecedented monooxygenation mechanism, where the μ-η2:η2-peroxide O-O bond is cleaved to accept the phenolic proton, followed by substrate phenolate coordination to a copper site concomitant with its aromatic ortho-hydroxylation by the nonprotonated μ-oxo. This study provides insights into O2 activation and reactivity by coupled binuclear copper active sites with fundamental implications in biocatalysis.
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Affiliation(s)
- Ioannis Kipouros
- Department of Chemistry, Stanford University, Stanford, CA 94305
| | - Agnieszka Stańczak
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, 166 10, Prague 6, Czech Republic
- Faculty of Science, Charles University, 128 00 Prague 2, Czech Republic
| | - Jake W. Ginsbach
- Department of Chemistry, Stanford University, Stanford, CA 94305
| | - Prokopis C. Andrikopoulos
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, 166 10, Prague 6, Czech Republic
| | - Lubomír Rulíšek
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, 166 10, Prague 6, Czech Republic
| | - Edward I. Solomon
- Department of Chemistry, Stanford University, Stanford, CA 94305
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Stanford University, Menlo Park, CA 94025
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17
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Removal of Selected Azo Dyes and Phenolic Compounds via Tyrosinase Immobilized Magnetic Iron Oxide Silver Nanoparticles. Catal Letters 2022. [DOI: 10.1007/s10562-022-04087-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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18
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Cha GS, Mok JA, Yun CH, Park CM. Production of 3,4-dihydroxy-L-phenylalanine using novel tyrosinases from Bacillus megaterium. Enzyme Microb Technol 2022; 160:110069. [DOI: 10.1016/j.enzmictec.2022.110069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 05/13/2022] [Accepted: 05/25/2022] [Indexed: 11/03/2022]
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19
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Du D, Su Y, Shang Q, Chen C, Tang W, Zhang L, Ren H, Liu W. Biomimetic synthesis of L-DOPA inspired by tyrosine hydroxylase. J Inorg Biochem 2022; 234:111878. [DOI: 10.1016/j.jinorgbio.2022.111878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 04/24/2022] [Accepted: 05/24/2022] [Indexed: 10/18/2022]
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20
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Min K, Kim YH, Kim J, Kim Y, Gong G, Um Y. Effect of manganese peroxidase on the decomposition of cellulosic components: Direct cellulolytic activity and synergistic effect with cellulase. BIORESOURCE TECHNOLOGY 2022; 343:126138. [PMID: 34678456 DOI: 10.1016/j.biortech.2021.126138] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 10/09/2021] [Accepted: 10/12/2021] [Indexed: 06/13/2023]
Abstract
Herein, it was unearthed that manganese peroxidase (MnP) from Phanerochaete chrysosporium, a lignin-degrading enzyme, is capable of not only directly decomposing cellulosic components but also boosting cellulase activity. MnP decomposes various cellulosic substrates (carboxymethyl cellulose, cellobiose [CMC], and Avicel®) and produces reducing sugars rather than oxidized sugars such as lactone and ketoaldolase. MnP with MnII in acetate buffer evolves the MnIII-acetate complex functioning as a strong oxidant, and the non-specificity of MnIII-acetate enables cellulose-decomposition. The catalytic mechanism was proposed by analyzing catalytic products derived from MnP-treated cellopentaose. Notably, MnP also boosts cellulase activity on CMC and Avicel®, even considering the cellulolytic activity of MnP itself. To the best of the authors' knowledge, this is the first report demonstrating a previously unknown fungal MnP activity in cellulose-decomposition in addition to a known delignification activity. Consequently, the results provide a promising insight for further investigation of the versatility of lignin-degrading biocatalysts.
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Affiliation(s)
- Kyoungseon Min
- Gwangju Bio/Energy R&D Center, Korea Institute of Energy Research (KIER), Gwangju 61003, Republic of Korea
| | - Yong Hwan Kim
- Ulsan National Institute of Science and Technology, Ulsan 44919, Republic of Korea
| | - Jiye Kim
- Clean Energy Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Yunje Kim
- Clean Energy Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Gyeongtaek Gong
- Clean Energy Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Youngsoon Um
- Clean Energy Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea; Clean Energy and Chemical Engineering, Korea University of Science and Technology (UST), Daejeon 34113, Republic of Korea.
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21
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A pair of homoisoflavonoid analogues (6-aldehydo-isoophiopogonanone A/6-aldehydo-isoophiopogonanone B) from Ophiopogon japonicus as a tyrosinase inhibitor: inhibitory activity, conformational change and mechanism. Eur Food Res Technol 2021. [DOI: 10.1007/s00217-021-03902-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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22
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Song H, Lee PG, Kim H, Lee UJ, Lee SH, Kim J, Kim BG. Polyphenol-Hydroxylating Tyrosinase Activity under Acidic pH Enables Efficient Synthesis of Plant Catechols and Gallols. Microorganisms 2021; 9:microorganisms9091866. [PMID: 34576760 PMCID: PMC8466947 DOI: 10.3390/microorganisms9091866] [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: 07/02/2021] [Revised: 08/27/2021] [Accepted: 08/27/2021] [Indexed: 11/16/2022] Open
Abstract
Tyrosinase is generally known as a melanin-forming enzyme, facilitating monooxygenation of phenols, oxidation of catechols into quinones, and finally generating biological melanin. As a homologous form of tyrosinase in plants, plant polyphenol oxidases perform the same oxidation reactions specifically toward plant polyphenols. Recent studies reported synthetic strategies for large scale preparation of hydroxylated plant polyphenols, using bacterial tyrosinases rather than plant polyphenol oxidase or other monooxygenases, by leveraging its robust monophenolase activity and broad substrate specificity. Herein, we report a novel synthesis of functional plant polyphenols, especially quercetin and myricetin from kaempferol, using screened bacterial tyrosinases. The critical bottleneck of the biocatalysis was identified as instability of the catechol and gallol under neutral and basic conditions. To overcome such instability of the products, the tyrosinase reaction proceeded under acidic conditions. Under mild acidic conditions supplemented with reducing agents, a bacterial tyrosinase from Bacillus megaterium (BmTy) displayed efficient consecutive two-step monophenolase activities producing quercetin and myricetin from kaempferol. Furthermore, the broad substrate specificity of BmTy toward diverse polyphenols enabled us to achieve the first biosynthesis of tricetin and 3'-hydroxyeriodictyol from apigenin and naringenin, respectively. These results suggest that microbial tyrosinase is a useful biocatalyst to prepare plant polyphenolic catechols and gallols with high productivity, which were hardly achieved by using other monooxygenases such as cytochrome P450s.
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Affiliation(s)
- Hanbit Song
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Korea; (H.S.); (P.-G.L.); (H.K.); (U.-J.L.); (S.-H.L.); (J.K.)
- Institute of Molecular Biology and Genetics, Seoul National University, Seoul 08826, Korea
| | - Pyung-Gang Lee
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Korea; (H.S.); (P.-G.L.); (H.K.); (U.-J.L.); (S.-H.L.); (J.K.)
- Institute of Molecular Biology and Genetics, Seoul National University, Seoul 08826, Korea
- Institute of Engineering Research, Seoul National University, Seoul 08826, Korea
| | - Hyun Kim
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Korea; (H.S.); (P.-G.L.); (H.K.); (U.-J.L.); (S.-H.L.); (J.K.)
- Institute of Molecular Biology and Genetics, Seoul National University, Seoul 08826, Korea
| | - Uk-Jae Lee
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Korea; (H.S.); (P.-G.L.); (H.K.); (U.-J.L.); (S.-H.L.); (J.K.)
- Institute of Molecular Biology and Genetics, Seoul National University, Seoul 08826, Korea
| | - Sang-Hyuk Lee
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Korea; (H.S.); (P.-G.L.); (H.K.); (U.-J.L.); (S.-H.L.); (J.K.)
- Institute of Molecular Biology and Genetics, Seoul National University, Seoul 08826, Korea
| | - Joonwon Kim
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Korea; (H.S.); (P.-G.L.); (H.K.); (U.-J.L.); (S.-H.L.); (J.K.)
- Institute of Molecular Biology and Genetics, Seoul National University, Seoul 08826, Korea
| | - Byung-Gee Kim
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Korea; (H.S.); (P.-G.L.); (H.K.); (U.-J.L.); (S.-H.L.); (J.K.)
- Institute of Molecular Biology and Genetics, Seoul National University, Seoul 08826, Korea
- Bio-MAX/N-Bio Institute, Seoul National University, Seoul 08826, Korea
- Institute for Sustainable Development (ISD), Seoul National University, Seoul 08826, Korea
- Correspondence: ; Tel.: +82-2-880-6774; Fax: +82-2-876-8945
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23
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Roshandel F, Saadatmand S, Iranbakhsh A, Ardebili ZO. Mycoremediation of oil contaminant by Pleurotus florida (P.Kumm) in liquid culture. Fungal Biol 2021; 125:667-678. [PMID: 34420694 DOI: 10.1016/j.funbio.2021.04.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 04/08/2021] [Accepted: 04/12/2021] [Indexed: 01/22/2023]
Abstract
This study investigated the potential functions of Pleurotus florida (an edible mushroom) in the biodegradation of gas oil at concentrations of 0 (control), 2.5, 5, and 10% (V: V) for 30 days. The gas oil increased dry weight and protein concentration in all treatments (by an average of 19.5 and 108%, respectively). Moreover, the pH, surface tension (ST), and interfacial tension (IFT) were reduced by the mushroom supplementation. The lowest surface tension (31.9 mN m-1) and the highest biosurfactant production belonged to the 10% gas oil treatment (0.845 ± 0.03 mg mL-1). The results demonstrated that the adsorption isotherm agreed well with the Langmuir isotherm. The maximum Langmuir adsorption capacity was calculated at 0.743 mg g-1 wet biomass of P. florida. The fungal supplementation efficiently remedied the total petroleum hydrocarbons (TPHs) by an average of 55% after 30 days. Gas chromatography (GC) analysis revealed that P. florida effectively detoxified C13-C28 hydrocarbons, Pristane, and Phytane, implying its high mycoremediation function. The toxicity test showed that mycoremediation increased the germination by an average of 35.82% ± 8.89 after 30 days. Laccase activity increased significantly with increasing gas oil concentration in the treatments. The maximum laccase activity was obtained in the 10% gas oil treatment (142.25 ± 0.72 U L-1). The presence of pollutants was also associated with induction in the tyrosinase activity when compared to the control. These results underline the high mycoremediation capacity of P. florida through the involvement of biosurfactants, laccase, and tyrosinase.
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Affiliation(s)
- Farzaneh Roshandel
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Sara Saadatmand
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran.
| | - Alireza Iranbakhsh
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
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Fan YF, Zhu SX, Hou FB, Zhao DF, Pan QS, Xiang YW, Qian XK, Ge GB, Wang P. Spectrophotometric Assays for Sensing Tyrosinase Activity and Their Applications. BIOSENSORS 2021; 11:290. [PMID: 34436092 PMCID: PMC8393227 DOI: 10.3390/bios11080290] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 08/17/2021] [Accepted: 08/19/2021] [Indexed: 12/13/2022]
Abstract
Tyrosinase (TYR, E.C. 1.14.18.1), a critical enzyme participating in melanogenesis, catalyzes the first two steps in melanin biosynthesis including the ortho-hydroxylation of L-tyrosine and the oxidation of L-DOPA. Previous pharmacological investigations have revealed that an abnormal level of TYR is tightly associated with various dermatoses, including albinism, age spots, and malignant melanoma. TYR inhibitors can partially block the formation of pigment, which are always used for improving skin tone and treating dermatoses. The practical and reliable assays for monitoring TYR activity levels are very useful for both disease diagnosis and drug discovery. This review comprehensively summarizes structural and enzymatic characteristics, catalytic mechanism and substrate preference of TYR, as well as the recent advances in biochemical assays for sensing TYR activity and their biomedical applications. The design strategies of various TYR substrates, alongside with several lists of all reported biochemical assays for sensing TYR including analytical conditions and kinetic parameters, are presented for the first time. Additionally, the biomedical applications and future perspectives of these optical assays are also highlighted. The information and knowledge presented in this review offer a group of practical and reliable assays and imaging tools for sensing TYR activities in complex biological systems, which strongly facilitates high-throughput screening TYR inhibitors and further investigations on the relevance of TYR to human diseases.
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Affiliation(s)
- Yu-Fan Fan
- Shanghai Frontiers Science Center for Chinese Medicine Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; (Y.-F.F.); (F.-B.H.); (D.-F.Z.); (Q.-S.P.); (X.-K.Q.); (G.-B.G.)
| | - Si-Xing Zhu
- Institute of Science, Technology and Humanities, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China;
| | - Fan-Bin Hou
- Shanghai Frontiers Science Center for Chinese Medicine Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; (Y.-F.F.); (F.-B.H.); (D.-F.Z.); (Q.-S.P.); (X.-K.Q.); (G.-B.G.)
| | - Dong-Fang Zhao
- Shanghai Frontiers Science Center for Chinese Medicine Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; (Y.-F.F.); (F.-B.H.); (D.-F.Z.); (Q.-S.P.); (X.-K.Q.); (G.-B.G.)
| | - Qiu-Sha Pan
- Shanghai Frontiers Science Center for Chinese Medicine Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; (Y.-F.F.); (F.-B.H.); (D.-F.Z.); (Q.-S.P.); (X.-K.Q.); (G.-B.G.)
| | - Yan-Wei Xiang
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China;
| | - Xing-Kai Qian
- Shanghai Frontiers Science Center for Chinese Medicine Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; (Y.-F.F.); (F.-B.H.); (D.-F.Z.); (Q.-S.P.); (X.-K.Q.); (G.-B.G.)
| | - Guang-Bo Ge
- Shanghai Frontiers Science Center for Chinese Medicine Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; (Y.-F.F.); (F.-B.H.); (D.-F.Z.); (Q.-S.P.); (X.-K.Q.); (G.-B.G.)
| | - Ping Wang
- Shanghai Frontiers Science Center for Chinese Medicine Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; (Y.-F.F.); (F.-B.H.); (D.-F.Z.); (Q.-S.P.); (X.-K.Q.); (G.-B.G.)
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Hussain A, Rafeeq H, Qasim M, Jabeen Z, Bilal M, Franco M, Iqbal HMN. Engineered tyrosinases with broadened bio-catalysis scope: immobilization using nanocarriers and applications. 3 Biotech 2021; 11:365. [PMID: 34290948 PMCID: PMC8257883 DOI: 10.1007/s13205-021-02913-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 06/28/2021] [Indexed: 02/08/2023] Open
Abstract
Enzyme immobilization is a widely used technology for creating more stable, active, and reusable biocatalysts. The immobilization process also improves the enzyme's operating efficiency in industrial applications. Various support matrices have been designed and developed to enhance the biocatalytic efficiency of immobilized enzymes. Given their unique physicochemical attributes, including substantial surface area, rigidity, semi-conductivity, high enzyme loading, hyper catalytic activity, and size-assisted optical properties, nanomaterials have emerged as fascinating matrices for enzyme immobilization. Tyrosinase is a copper-containing monooxygenase that catalyzes the o-hydroxylation of monophenols to catechols and o-quinones. This enzyme possesses a wide range of uses in the medical, biotechnological, and food sectors. This article summarizes an array of nanostructured materials as carrier matrices for tyrosinase immobilization. Following a detailed background overview, various nanomaterials, as immobilization support matrices, including carbon nanotubes (CNTs), carbon dots (CDs), carbon black (CB), nanofibers, Graphene nanocomposite, platinum nanoparticles, nano-sized magnetic particles, lignin nanoparticles, layered double hydroxide (LDH) nanomaterials, gold nanoparticles (AuNPs), and zinc oxide nanoparticles have been discussed. Next, applied perspectives have been spotlights with particular reference to environmental pollutant sensing, phenolic compounds detection, pharmaceutical, and food industry (e.g., cereal processing, dairy processing, and meat processing), along with other miscellaneous applications.
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Affiliation(s)
- Asim Hussain
- grid.414839.30000 0001 1703 6673Department of Biochemistry, Riphah International University, Faisalabad, Pakistan
| | - Hamza Rafeeq
- grid.414839.30000 0001 1703 6673Department of Biochemistry, Riphah International University, Faisalabad, Pakistan
| | - Muhammad Qasim
- grid.411727.60000 0001 2201 6036International Islamic University Islamabad, Islamabad, Pakistan
| | - Zara Jabeen
- grid.414839.30000 0001 1703 6673Department of Biochemistry, Riphah International University, Faisalabad, Pakistan
| | - Muhammad Bilal
- grid.417678.b0000 0004 1800 1941School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huai’an, 223003 China
| | - Marcelo Franco
- grid.412324.20000 0001 2205 1915Departament of Exact Sciences and Technology, State University of Santa Cruz, Ilhéus, Brazil
| | - Hafiz M. N. Iqbal
- grid.419886.a0000 0001 2203 4701Tecnologico de Monterrey, School of Engineering and Sciences, 64849 Monterrey, Mexico
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Li J, Deng ZY, He Y, Fan Y, Dong H, Chen R, Liu R, Tsao R, Liu X. Differential specificities of polyphenol oxidase from lotus seeds (Nelumbo nucifera Gaertn.) toward stereoisomers, (−)-epicatechin and (+)-catechin: Insights from comparative molecular docking studies. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111728] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Zhao J, Ran G, Xu M, Lu X, Tan D. Cost-Effective Production of L-DOPA by Tyrosinase-Immobilized Polyhydroxyalkanoate Nanogranules in Engineered Halomonas bluephagenesis TD01. Molecules 2021; 26:molecules26133778. [PMID: 34206459 PMCID: PMC8270294 DOI: 10.3390/molecules26133778] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 06/16/2021] [Accepted: 06/17/2021] [Indexed: 11/16/2022] Open
Abstract
3,4-dihydroxyphenyl-L-alanine (L-DOPA) is a preferred drug for Parkinson's disease, with an increasing demand worldwide that mainly relies on costly and environmentally problematic chemical synthesis. Yet, biological L-DOPA production is unfeasible at the industrial scale due to its low L-DOPA yield and high production cost. In this study, low-cost Halomonas bluephagenesis TD01 was engineered to produce tyrosinase TyrVs-immobilized polyhydroxyalkanoate (PHA) nanogranules in vivo, with the improved PHA content and increased immobilization efficiency of TyrVs accounting for 6.85% on the surface of PHA. A higher L-DOPA-forming monophenolase activity of 518.87 U/g PHA granules and an L-DOPA concentration of 974.36 mg/L in 3 h catalysis were achieved, compared to those of E. coli. Together with the result of L-DOPA production directly by cell lysates containing PHA-TyrVs nanogranules, our study demonstrated the robust and cost-effective production of L-DOPA by H. bluephagenesis, further contributing to its low-cost industrial production based on next-generation industrial biotechnology (NGIB).
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Affiliation(s)
- Jiping Zhao
- Key Laboratory of Biomedical Information Engineering of the Ministry of Education, Department of Biological Science and Bioengineering, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an 710049, China; (J.Z.); (M.X.)
| | - Ganqiao Ran
- Institute of Bio-Agriculture of Shaanxi Province, Xi’an 710043, China;
| | - Mengmeng Xu
- Key Laboratory of Biomedical Information Engineering of the Ministry of Education, Department of Biological Science and Bioengineering, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an 710049, China; (J.Z.); (M.X.)
| | - Xiaoyun Lu
- Key Laboratory of Biomedical Information Engineering of the Ministry of Education, Department of Biological Science and Bioengineering, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an 710049, China; (J.Z.); (M.X.)
- Correspondence: (X.L.); (D.T.)
| | - Dan Tan
- Key Laboratory of Biomedical Information Engineering of the Ministry of Education, Department of Biological Science and Bioengineering, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an 710049, China; (J.Z.); (M.X.)
- Correspondence: (X.L.); (D.T.)
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Nikolaivits E, Valmas A, Dedes G, Topakas E, Dimarogona M. Considerations Regarding Activity Determinants of Fungal Polyphenol Oxidases Based on Mutational and Structural Studies. Appl Environ Microbiol 2021; 87:e00396-21. [PMID: 33741634 PMCID: PMC8208164 DOI: 10.1128/aem.00396-21] [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: 02/25/2021] [Accepted: 03/16/2021] [Indexed: 11/20/2022] Open
Abstract
Polyphenol oxidases (PPOs) are an industrially relevant family of enzymes, being involved in the postharvest browning of fruits and vegetables, as well as in human melanogenesis. Their involvement lies in their ability to oxidize phenolic or polyphenolic compounds, which subsequently form pigments. The PPO family includes tyrosinases and catechol oxidases, which, in spite of their high structural similarity, exhibit different catalytic activities. Long-standing research efforts have not yet managed to decipher the structural determinants responsible for this differentiation, as every new theory is disproved by a more recent study. In the present work, we combined biochemical along with structural data in order to better understand the function of a previously characterized PPO from Thermothelomyces thermophila (TtPPO). The crystal structure of a TtPPO variant, determined at 1.55 Å resolution, represents the second known structure of an ascomycete PPO. Kinetic data for structure-guided mutants prove the implication of "gate" residue L306, residue HB1+1 (G292), and HB2+1 (Y296) in TtPPO function against various substrates. Our findings demonstrate the role of L306 in the accommodation of bulky substrates and show that residue HB1+1 is unlikely to determine monophenolase activity, as was suggested from previous studies.IMPORTANCE PPOs are enzymes of biotechnological interest. They have been extensively studied both biochemically and structurally, with a special focus on the plant-derived counterparts. Even so, explicit description of the molecular determinants of their substrate specificity is still pending. For ascomycete PPOs, only one crystal structure has been determined so far, thus limiting our knowledge on this tree branch of the family. In the present study, we report the second crystal structure of an ascomycete PPO. Combined with site-directed mutagenesis and biochemical studies, we depict the amino acids in the vicinity of the active site that affect enzyme activity and perform a detailed analysis on a variety of substrates. Our findings improve current understanding of structure-function relations of microbial PPOs, which is a prerequisite for the engineering of biocatalysts of desired properties.
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Affiliation(s)
- Efstratios Nikolaivits
- Industrial Biotechnology & Biocatalysis Group, Biotechnology Laboratory, School of Chemical Engineering, National Technical University of Athens, Athens, Greece
| | | | - Grigorios Dedes
- Industrial Biotechnology & Biocatalysis Group, Biotechnology Laboratory, School of Chemical Engineering, National Technical University of Athens, Athens, Greece
| | - Evangelos Topakas
- Industrial Biotechnology & Biocatalysis Group, Biotechnology Laboratory, School of Chemical Engineering, National Technical University of Athens, Athens, Greece
| | - Maria Dimarogona
- Laboratory of Structural Biology and Biotechnology, Department of Chemical Engineering, University of Patras, Patras, Greece
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Lin YW. Biodegradation of aromatic pollutants by metalloenzymes: A structural-functional-environmental perspective. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213774] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Bounegru AV, Apetrei C. Laccase and Tyrosinase Biosensors Used in the Determination of Hydroxycinnamic Acids. Int J Mol Sci 2021; 22:4811. [PMID: 34062799 PMCID: PMC8125614 DOI: 10.3390/ijms22094811] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 04/27/2021] [Accepted: 04/29/2021] [Indexed: 12/12/2022] Open
Abstract
In recent years, researchers have focused on developing simple and efficient methods based on electrochemical biosensors to determine hydroxycinnamic acids from various real samples (wine, beer, propolis, tea, and coffee). Enzymatic biosensors represent a promising, low-cost technology for the direct monitoring of these biologically important compounds, which implies a fast response and simple sample processing procedures. The present review aims at highlighting the structural features of this class of compounds and the importance of hydroxycinnamic acids for the human body, as well as presenting a series of enzymatic biosensors commonly used to quantify these phenolic compounds. Enzyme immobilization techniques on support electrodes are very important for their stability and for obtaining adequate results. The following sections of this review will briefly describe some of the laccase (Lac) and tyrosinase (Tyr) biosensors used for determining the main hydroxycinnamic acids of interest in the food or cosmetics industry. Considering relevant studies in the field, the fact has been noticed that there is a greater number of studies on laccase-based biosensors as compared to those based on tyrosinase for the detection of hydroxycinnamic acids. Significant progress has been made in relation to using the synergy of nanomaterials and nanocomposites for more stable and efficient enzyme immobilization. These nanomaterials are mainly carbon- and/or polymer-based nanostructures and metallic nanoparticles which provide a suitable environment for maintaining the biocatalytic activity of the enzyme and for increasing the rate of electron transport.
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Affiliation(s)
| | - Constantin Apetrei
- Department of Chemistry, Physics and Environment, Faculty of Sciences and Environment, “Dunărea de Jos” University of Galaţi, 47 Domnească Street, 800008 Galaţi, Romania;
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Ahn SY, Jang S, Sudheer PDVN, Choi KY. Microbial Production of Melanin Pigments from Caffeic Acid and L-tyrosine Using Streptomyces glaucescens and FCS-ECH-Expressing Escherichia coli. Int J Mol Sci 2021; 22:2413. [PMID: 33673727 PMCID: PMC7957706 DOI: 10.3390/ijms22052413] [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: 01/13/2021] [Revised: 02/21/2021] [Accepted: 02/24/2021] [Indexed: 12/23/2022] Open
Abstract
In this study, synthetic allomelanin was prepared from wild-type Streptomyces glaucescens and recombinant Escherichia coli BL21(DE3) strains. S. glaucescens could produce 125.25 ± 6.01 mg/L of melanin with a supply of 5 mM caffeic acid within 144 h. The ABTS radical scavenging capacity of S. glaucescens melanin was determined to be approximately 7.89 mg/mL of IC50 value, which was comparable to L-tyrosine-based eumelanin. The isolated melanin was used in cotton fabric dyeing, and the effect of copper ions, laccase enzyme treatment, and the dyeing cycle on dyeing performance was investigated. Interestingly, dyeing fastness was greatly improved upon treatment with the laccase enzyme during the cotton dyeing process. Besides, the supply of C5-diamine, which was reported to lead to more complex crosslinking between melanin units, to caffeic acid-based melanin synthesis was also investigated for higher production and novel functionalities. To facilitate the supply of caffeic acid and C5-diamine, E. coli strains expressing each or combinations of tyrosine ammonia lyase/p-coumarate 3-hydroxylase, feruloyl-CoA synthetase/enoyl-CoA hydratase/aldolase, and tyrosinase/lysine decarboxylase enzymes were prepared and investigated for their eumelanin, C5-diamine, and allomelanin production from L-tyrosine and L-lysine, respectively. Finally, H-NMR, FT-IR, and MALDI-TOF analysis of the synthetic melanin pigments were attempted to obtain the chemical information.
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Affiliation(s)
- Soo-Yeon Ahn
- Environment Research Institute, Ajou University, Suwon 16499, Gyeonggi-do, Korea;
| | - Seyoung Jang
- Department of Environmental and Safety Engineering, College of Engineering, Ajou University, Suwon 16499, Gyeonggi-do, Korea;
| | | | - Kwon-Young Choi
- Environment Research Institute, Ajou University, Suwon 16499, Gyeonggi-do, Korea;
- Department of Environmental and Safety Engineering, College of Engineering, Ajou University, Suwon 16499, Gyeonggi-do, Korea;
- Department of Environmental Engineering, College of Engineering, Ajou University, Suwon 16499, Gyeonggi-do, Korea
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Wang F, Xu Z, Wang C, Guo Z, Yuan Z, Kang H, Li J, Lu F, Liu Y. Biochemical characterization of a tyrosinase from Bacillus aryabhattai and its application. Int J Biol Macromol 2021; 176:37-46. [PMID: 33571594 DOI: 10.1016/j.ijbiomac.2021.02.042] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 02/04/2021] [Accepted: 02/05/2021] [Indexed: 02/05/2023]
Abstract
Although lots of tyrosinases have been isolated from bacteria, few studies are focused on tyrosinases from Bacillus sp.. In this study, a tyrosinase from B. aryabhattai TCCC 111983 (TYR) was functionally expressed, purified, and then biochemically characterized. The recombinant tyrosinase (rTYR) presented a good catalytic activity in a broad temperature and pH range, retaining over 60% of the relative activity at 30 °C-90 °C and 45% at pH 3.0 to 10.0. Especially, rTYR exhibited 20% of its maximum activity at 0 °C, and it also showed a variable stability towards different effectors. It presented high tolerance towards salinity and chloride, retaining 81% of its original activity in 2 M NaCl. Kinetic parameters indicated that rTYR displayed a relatively good affinity for both l-tyrosine and l-DOPA. Additionally, rTYR demonstrated remarkable advantages on efficient decolorizing azo and anthraquinonic food dyes (carmine and erythrosin), and more five industrial dyes with or without mediators in acidic, neutral, and alkaline conditions. As the first report on the tyrosinase from B. aryabhattai, the aforementioned results indicated that rTYR would be potential for food industrial applications.
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Affiliation(s)
- Fenghua Wang
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Zehua Xu
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Chen Wang
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Zehui Guo
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Zhaoting Yuan
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Hongwei Kang
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Jingwen Li
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Fuping Lu
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China.
| | - Yihan Liu
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China.
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Electrochemical Detection of Bisphenol A by Tyrosinase Immobilized on Electrospun Nanofibers Decorated with Gold Nanoparticles. ELECTROCHEM 2021. [DOI: 10.3390/electrochem2010004] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Bisphenol A (BPA) is an endocrine-disrupting chemical (EDC) employed in industrial processes that causes adverse effects on the environment and human health. Sensitive and inexpensive methods to detect BPA are therefore needed. In this paper, we describe an electrochemical biosensor for detecting low levels of BPA using polymeric electrospun nanofibers of polyamide 6 (PA6) and poly(allylamine hydrochloride) (PAH) decorated with gold nanoparticles (AuNPs), namely, PA6/PAH@AuNPs, which were deposited onto a fluorine-doped tin oxide (FTO) substrate. The hybrid layer was excellent for the immobilization of tyrosinase (Tyr), which allowed an amperometric detection of BPA with a limit of detection of 0.011 μM in the concentration range from 0.05 to 20 μM. Detection was also possible in real water samples with recoveries in the range of 92–105%. The improved sensing performance is attributed to the combined effect of the large surface area and porosity of PA6/PAH nanofibers, the catalytic activity of AuNPs, and oxidoreductase ability of Tyr. These results provide a route for novel biosensing architectures to monitor BPA and other EDCs in water resources.
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Xu Y, Li Y, Li L, Zhang L, Ding Z, Shi G. Reductase-catalyzed tetrahydrobiopterin regeneration alleviates the anti-competitive inhibition of tyrosine hydroxylation by 7,8-dihydrobiopterin. Catal Sci Technol 2021. [DOI: 10.1039/d0cy01958e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
l-Tyrosine hydroxylation by tyrosine hydroxylase is a significant reaction for preparing many nutraceutical and pharmaceutical chemicals.
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Affiliation(s)
- Yinbiao Xu
- Key Laboratory of Industrial Biotechnology
- Ministry of Education
- School of Biotechnology
- Jiangnan University
- Wuxi
| | - Youran Li
- Key Laboratory of Industrial Biotechnology
- Ministry of Education
- School of Biotechnology
- Jiangnan University
- Wuxi
| | - Leyun Li
- Key Laboratory of Industrial Biotechnology
- Ministry of Education
- School of Biotechnology
- Jiangnan University
- Wuxi
| | - Liang Zhang
- Key Laboratory of Industrial Biotechnology
- Ministry of Education
- School of Biotechnology
- Jiangnan University
- Wuxi
| | - Zhongyang Ding
- Key Laboratory of Industrial Biotechnology
- Ministry of Education
- School of Biotechnology
- Jiangnan University
- Wuxi
| | - Guiyang Shi
- Key Laboratory of Industrial Biotechnology
- Ministry of Education
- School of Biotechnology
- Jiangnan University
- Wuxi
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Brás EJS, Domingues C, Chu V, Fernandes P, Conde JP. Microfluidic bioreactors for enzymatic synthesis in packed-bed reactors-Multi-step reactions and upscaling. J Biotechnol 2020; 323:24-32. [PMID: 32712128 DOI: 10.1016/j.jbiotec.2020.07.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 07/21/2020] [Indexed: 10/23/2022]
Abstract
Enzymatic synthesis of biochemical commodities is of upmost importance as it represents a greener alternative to traditional chemical synthesis and provides easier downstream processing strategies compared to fermentation-based processes. A microfluidic system used to optimize the enzymatic production of both levodopa (L-DOPA) and dopamine in both single-step and multistep-reaction sequences with yield of approximately 30 % for L-DOPA production and 70 % for dopamine production is presented. The system for L-DOPA production was then up-scaled (780-fold increase) to a milliliter scale system by maintaining similar mass transport properties resulting in the same yield, space-time yield and biocatalyst yield as its microscale counterpart. The results obtained for yield and biocatalyst yield (351.7 mgL-DOPA mg-1Tyr h-1) were similar to what is reported in the literature for similar systems, however the space-time yield (0.806 mgL-DOPA L-1 h-1) was smaller. This work demonstrates a microfluidic bioreactor that can be used for complex optimizations that can be performed rapidly while reducing the consumption of reagents by immobilizing the catalyst on a carrier which can then be used in a packed-bed reactor, thus extending the enzyme life span.
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Affiliation(s)
- Eduardo J S Brás
- Instituto de Engenharia de Sistemas e Computadores - Microsistemas e Nanotecnologias (INESC MN), Lisbon, Portugal; IBB - Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - Cristiana Domingues
- Instituto de Engenharia de Sistemas e Computadores - Microsistemas e Nanotecnologias (INESC MN), Lisbon, Portugal; IBB - Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - Virginia Chu
- Instituto de Engenharia de Sistemas e Computadores - Microsistemas e Nanotecnologias (INESC MN), Lisbon, Portugal
| | - Pedro Fernandes
- IBB - Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal; Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal; DREAMS and Faculty of Engineering, Universidade Lusófona de Humanidades e Tecnologias, Lisbon, Portugal
| | - João Pedro Conde
- Instituto de Engenharia de Sistemas e Computadores - Microsistemas e Nanotecnologias (INESC MN), Lisbon, Portugal; Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal.
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Recent advances in biocatalytic derivatization of L-tyrosine. Appl Microbiol Biotechnol 2020; 104:9907-9920. [PMID: 33067683 DOI: 10.1007/s00253-020-10949-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/29/2020] [Accepted: 10/05/2020] [Indexed: 01/29/2023]
Abstract
L-Tyrosine is an aromatic, polar, non-essential amino acid that contains a highly reactive α-amino, α-carboxyl, and phenolic hydroxyl group. Derivatization of these functional groups can produce chemicals, such as L-3,4-dihydroxyphenylalanine, tyramine, 4-hydroxyphenylpyruvic acid, and benzylisoquinoline alkaloids, which are widely employed in the pharmaceutical, food, and cosmetics industries. In this review, we summarize typical L-tyrosine derivatizations catalyzed by enzymatic biocatalysts, as well as the strategies and challenges associated with their production processes. Finally, we discuss future perspectives pertaining to the enzymatic production of L-tyrosine derivatives.Key points• Summary of recent advances in enzyme-catalyzed L-tyrosine derivatization.• Highlights of relevant strategies involved in L-tyrosine derivatives biosynthesis.• Future perspectives on industrial applications of L-tyrosine derivatization.
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Qu Y, Zhan Q, Du S, Ding Y, Fang B, Du W, Wu Q, Yu H, Li L, Huang W. Catalysis-based specific detection and inhibition of tyrosinase and their application. J Pharm Anal 2020; 10:414-425. [PMID: 33133725 PMCID: PMC7591782 DOI: 10.1016/j.jpha.2020.07.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 07/11/2020] [Accepted: 07/15/2020] [Indexed: 02/06/2023] Open
Abstract
Tyrosinase is an important enzyme in controlling the formation of melanin in melanosome, and plays a key role in the pigmentation of hair and skin. The abnormal expression or activation of tyrosinase is associated with several diseases such as albinism, vitiligo, melanoma and Parkinson disease. Excessive deposition of melanin could cause diseases such as freckles and brown spots in the human body, and it is also closely related to browning of fruits and vegetables and insect molting. Detecting and inhibiting the activity of tyrosinase is of extraordinary value in the progress of diagnosis and treatment of these diseases. Therefore, many selective optical detection probes and small molecular inhibitors have been developed, and have made significant contributions to the basic and clinical research on these diseases. In this paper, the detection and inhibition of tyrosinase and their application in whitening products are reviewed, with special emphasis on development of fluorescent probes and inhibitors. Hopefully, this review will help design more efficient and sensitive tyrosinase probes and inhibitors, as well as shed light on novel treatment of diseases such as melanoma. The abnormal expression or activation of tyrosinase is the pathogenesis of several diseases such as albinism, vitiligo, and melanoma. Detecting and inhibiting tyrosinase activity is of great value in the diagnosis and treatment of these diseases. The detection/inhibition of tyrosinase and its application in whitening products are reviewed, with special emphasis on probes/inhibitors.
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Affiliation(s)
- Yunwei Qu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing, PR China
| | - Qing Zhan
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing, PR China
| | - Shubo Du
- Department of Chemistry, National University of Singapore, Singapore
| | - Yang Ding
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing, PR China
| | - Bin Fang
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, 710072, China
| | - Wei Du
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, 710072, China
| | - Qiong Wu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing, PR China
| | - Haidong Yu
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, 710072, China
| | - Lin Li
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing, PR China
| | - Wei Huang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing, PR China.,Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, 710072, China
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Raymundo-Pereira PA, Silva TA, Caetano FR, Ribovski L, Zapp E, Brondani D, Bergamini MF, Marcolino LH, Banks CE, Oliveira ON, Janegitz BC, Fatibello-Filho O. Polyphenol oxidase-based electrochemical biosensors: A review. Anal Chim Acta 2020; 1139:198-221. [PMID: 33190704 DOI: 10.1016/j.aca.2020.07.055] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 07/14/2020] [Accepted: 07/20/2020] [Indexed: 02/06/2023]
Abstract
The detection of phenolic compounds is relevant not only for their possible benefits to human health but also for their role as chemical pollutants, including as endocrine disruptors. The required monitoring of such compounds on-site or in field analysis can be performed with electrochemical biosensors made with polyphenol oxidases (PPO). In this review, we describe biosensors containing the oxidases tyrosinase and laccase, in addition to crude extracts and tissues from plants as enzyme sources. From the survey in the literature, we found that significant advances to obtain sensitive, robust biosensors arise from the synergy reached with a diversity of nanomaterials employed in the matrix. These nanomaterials are mostly metallic nanoparticles and carbon nanostructures, which offer a suitable environment to preserve the activity of the enzymes and enhance electron transport. Besides presenting a summary of contributions to electrochemical biosensors containing PPOs in the last five years, we discuss the trends and challenges to take these biosensors to the market, especially for biomedical applications.
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Affiliation(s)
| | - Tiago A Silva
- Departamento de Metalurgia e Química, Centro Federal de Educação Tecnológica de Minas Gerais (CEFET-MG), 35180-008, Timóteo, MG, Brazil
| | - Fábio R Caetano
- Laboratório de Sensores Eletroquímicos (LabSensE), Departamento de Química, Universidade Federal Do Paraná (UFPR), 81.531-980, Curitiba, PR, Brazil
| | - Laís Ribovski
- São Carlos Institute of Physics, University of São Paulo, São Carlos, SP, Brazil
| | - Eduardo Zapp
- Department of Exact Sciences and Education, Federal University of Santa Catarina, 89036-256, Brazil
| | - Daniela Brondani
- Department of Exact Sciences and Education, Federal University of Santa Catarina, 89036-256, Brazil
| | - Marcio F Bergamini
- Laboratório de Sensores Eletroquímicos (LabSensE), Departamento de Química, Universidade Federal Do Paraná (UFPR), 81.531-980, Curitiba, PR, Brazil
| | - Luiz H Marcolino
- Laboratório de Sensores Eletroquímicos (LabSensE), Departamento de Química, Universidade Federal Do Paraná (UFPR), 81.531-980, Curitiba, PR, Brazil
| | - Craig E Banks
- Faculty of Science and Engineering, Manchester Metropolitan University, Chester Street, Manchester, M1 5GD, UK
| | - Osvaldo N Oliveira
- São Carlos Institute of Physics, University of São Paulo, São Carlos, SP, Brazil
| | - Bruno C Janegitz
- Department of Nature Sciences, Mathematics and Education, Federal University of São Carlos, 13600-970, Araras, SP, Brazil.
| | - Orlando Fatibello-Filho
- Department of Chemistry, Federal University of São Carlos, 13560-970, São Carlos, SP, Brazil.
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Affiliation(s)
| | - Ivanhoe K. H. Leung
- School of Chemical Sciences, The University of Auckland, Auckland, New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Auckland, New Zealand
- Centre for Green Chemical Science, The University of Auckland, Auckland, New Zealand
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Biundo A, Braunschmid V, Pretzler M, Kampatsikas I, Darnhofer B, Birner-Gruenberger R, Rompel A, Ribitsch D, Guebitz GM. Polyphenol oxidases exhibit promiscuous proteolytic activity. Commun Chem 2020; 3:62. [PMID: 36703476 PMCID: PMC9814219 DOI: 10.1038/s42004-020-0305-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 04/16/2020] [Indexed: 01/29/2023] Open
Abstract
Tyrosinases catalyse both the cresolase and catecholase reactions for the formation of reactive compounds which are very important for industrial applications. In this study, we describe a proteolytic activity of tyrosinases. Two different tyrosinases originating from mushroom and apple are able to cleave the carboxylesterase EstA. The cleavage reaction correlates with the integrity of the active site of tyrosinase and is independent of other possible influencing factors, which could be present in the reaction. Therefore, the cleavage of EstA represents a novel functionality of tyrosinases. EstA was previously reported to degrade synthetic polyesters, albeit slowly. However, the EstA truncated by tyrosinase shows higher degradation activity on the non-biodegradable polyester polyethylene terephthalate (PET), which is a well-established environmental threat.
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Affiliation(s)
- A Biundo
- Institute of Environmental Biotechnology, University of Natural Resources and Life Sciences (BOKU), Konrad Lorenz Straße 22, 3430, Tulln, Austria
- Department of Biosciences, Biotechnology and Biopharmaceutics, University of Bari, Via Edoardo Orabona, 70125, Bari, Italy
| | - V Braunschmid
- Institute of Environmental Biotechnology, University of Natural Resources and Life Sciences (BOKU), Konrad Lorenz Straße 22, 3430, Tulln, Austria
- Austrian Centre for Industrial Biotechnology (ACIB), Konrad Lorenz Straße 22, 3430 Tulln, Austria and Petersgasse 14, 8010, Graz, Austria
| | - M Pretzler
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstraße 14, 1090, Wien, Austria
| | - I Kampatsikas
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstraße 14, 1090, Wien, Austria
| | - B Darnhofer
- Austrian Centre for Industrial Biotechnology (ACIB), Konrad Lorenz Straße 22, 3430 Tulln, Austria and Petersgasse 14, 8010, Graz, Austria
- Medical University of Graz, Diagnostic and Research Institute of Pathology, Neue Stiftingtalstraße 6, 8010, Graz, Austria
- BioTechMed-Graz, Mozartgasse 12/II, 8010, Graz, Austria
| | - R Birner-Gruenberger
- Medical University of Graz, Diagnostic and Research Institute of Pathology, Neue Stiftingtalstraße 6, 8010, Graz, Austria
- BioTechMed-Graz, Mozartgasse 12/II, 8010, Graz, Austria
- Vienna University of Technology, Institute for Chemical Technologies and Analytics, Getreidemarkt 9/164, 1060, Vienna, Austria
| | - A Rompel
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstraße 14, 1090, Wien, Austria
| | - D Ribitsch
- Institute of Environmental Biotechnology, University of Natural Resources and Life Sciences (BOKU), Konrad Lorenz Straße 22, 3430, Tulln, Austria.
- Austrian Centre for Industrial Biotechnology (ACIB), Konrad Lorenz Straße 22, 3430 Tulln, Austria and Petersgasse 14, 8010, Graz, Austria.
| | - G M Guebitz
- Institute of Environmental Biotechnology, University of Natural Resources and Life Sciences (BOKU), Konrad Lorenz Straße 22, 3430, Tulln, Austria
- Austrian Centre for Industrial Biotechnology (ACIB), Konrad Lorenz Straße 22, 3430 Tulln, Austria and Petersgasse 14, 8010, Graz, Austria
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Simultaneous Determination of Six Isoflavones from Puerariae Lobatae Radix by CPE-HPLC and Effect of Puerarin on Tyrosinase Activity. Molecules 2020; 25:molecules25020344. [PMID: 31952126 PMCID: PMC7024166 DOI: 10.3390/molecules25020344] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Accepted: 01/13/2020] [Indexed: 12/23/2022] Open
Abstract
Tyrosinase inhibitors with excellent inhibitory activities and lower side effects have promising applications in the fields of medicine, agriculture, food sciences and cosmetics. In this study, a method for simultaneous separation and determination of six target compounds (puerarin, daidzin, genistein, daidzein, genistin, and formononetin) in Puerariae Lobatae Radix was established by cloud point extraction (CPE) and concentration combined with high performance liquid chromatography (HPLC). To achieve high extraction yields, an ultrasound-assisted extraction method was developed based on a salt-modified Triton X-100 system. The optimal extraction conditions are: surfactant Triton X-100 concentration 0.07 g/mL, liquid-solid ratio 80:1 (mL/g), NaCl addition amount 0.6 g, equilibrium time 40 min, equilibrium temperature 70 °C. Under the optimal conditions, the total maximum extraction yield of the six target isoflavones reached 8.92 mg/g. Using l-tyrosine and l-dopa as substrates, the effects of puerarin on the monophenolase and diphenolase activity of tyrosinase activity were investigated by the enzyme kinetics method. The results showed that puerarin inhibited monophenolase activity with an IC50 of 0.537 mg/mL and activated diphenolase activity. The inhibition type of puerarin on monophenolase and the activation type of puerarin on diphenolase were analyzed by Lineweaver-Burk plots which show that puerarin showed mixed inhibition on monophenolase and mixed activation on diphenolase. Therefore, puerarin can be used as both a tyrosinase inhibitor and a tyrosinase activator.
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