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Brair VL, Correia LFL, Barbosa NO, Braga RF, Taira AR, da Silva AA, Brandão FZ, Ungerfeld R, Souza-Fabjan JMG. The association of resveratrol and AFPI did not enhance the cryoresistance of ram sperm. Anim Reprod 2024; 21:e20230159. [PMID: 38384723 PMCID: PMC10878549 DOI: 10.1590/1984-3143-ar2023-0159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 01/15/2024] [Indexed: 02/23/2024] Open
Abstract
Cryoprotectants are required to reduce damage caused to the cells due to low temperatures during the cryopreservation. Antifreeze proteins (AFP) have a well-known role in cell membrane protection, while resveratrol is a potent antioxidant. This study assessed the effect of the association of resveratrol concentrations and AFP I in a ram semen extender. Pooled semen of four rams was allocated into six treatments in a factorial arrangement: (CONT, only the semen extender); only AFP I (ANT: 0.1 µg/mL of AFP I), only resveratrol, one treatment with two levels (10 µM/mL or 50 µM/mL of resveratrol); and two treatments with the interactions, with one AFP I and one of the two levels of resveratrol (0.1 µg/mL of AFP I with 10 µM/mL resveratrol; 0.1 µg/mL of AFP I with 50 µM/mL resveratrol). No interaction between factors was observed on sperm kinetics, plasma membrane integrity, hypo-osmotic test, and mitochondrial activity parameters. There was a high probability (P = 0.06) of reducing sperm cells with functional membrane percentage in the hypo-osmotic test and increasing the percentage of sperm with high mitochondrial activity (P = 0.07) was observed in AFP presence. An interaction of AFP and resveratrol was observed in non-capacitated sperm (P = 0.009), acrosomal reaction (P = 0.034), and sperm binding (P = 0.04). In conclusion, the association of resveratrol and AFP did not improve the quality of frozen-thawed semen and even promoted deleterious effects compared to their single addition in the semen extender. The supplementation of 50 µM/mL of resveratrol improved the outcomes of frozen-thawed ram sperm, being a potential cryoprotectant.
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Affiliation(s)
- Viviane Lopes Brair
- Faculdade de Veterinária, Universidade Federal Fluminense, Niterói, RJ, Brasil
| | | | | | | | | | - Andreza Amaral da Silva
- Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brasil
| | | | - Rodolfo Ungerfeld
- Departamento de Biociencias Veterinarias, Facultad de Veterinaria, Universidad de la República, Montevideo, Uruguay
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2
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Mohammadi S, Moghadam MD, Nasiriasl M, Akhzari M, Barazesh M. Insights into the Therapeutic and Pharmacological Properties of Resveratrol as a Nutraceutical Antioxidant Polyphenol in Health Promotion and Disease Prevention. Curr Rev Clin Exp Pharmacol 2024; 19:327-354. [PMID: 38192151 DOI: 10.2174/0127724328268507231218051058] [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: 06/22/2023] [Revised: 11/20/2023] [Accepted: 11/22/2023] [Indexed: 01/10/2024]
Abstract
Resveratrol (3, 5, 4'-trihydroxystilbene) is a polyphenolic derivative with herbal origin. It has attracted considerable attention in recent decades. Many studies have revealed the benefits of Resveratrol over several human disease models, including heart and neurological diseases, nephroprotective, immune regulation, antidiabetic, anti-obesity, age-related diseases, antiviral, and anticancer in experimental and clinical conditions. Recently, the antioxidant and anti-inflammatory activities of Resveratrol have been observed, and it has been shown that Resveratrol reduces inflammatory biomarkers, such as tissue degradation factor, cyclooxygenase 2, nitric oxide synthase, and interleukins. All of these activities appear to be dependent on its structural properties, such as the number and position of the hydroxyl group, which regulates oxidative stress, cell death, and inflammation. Resveratrol is well tolerated and safe even at higher pharmacological doses and desirably affects cardiovascular, neurological, and diabetic diseases. Consequently, it is plausible that Resveratrol can be regarded as a beneficial nutritional additive and a complementary drug, particularly for therapeutic applications. The present review provides an overview of currently available investigations on preventive and therapeutic characteristics and the main molecular mechanisms of Resveratrol and its potent derivatives in various diseases. Thus, this review would enhance knowledge and information about Resveratrol and encourage researchers worldwide to consider it as a pharmaceutical drug to struggle with future health crises against different human disorders.
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Affiliation(s)
- Shiva Mohammadi
- Department of Medical Biotechnology, School of Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Maryam Dalaei Moghadam
- Razi Herbal Medicines Research Center, Department of Endodontic, Faculty of Dentistry, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Maryam Nasiriasl
- Radiology Department, Fasa University of Medical Sciences, Fasa, Iran
| | - Morteza Akhzari
- School of Nursing, Larestan University of Medical Sciences, Larestan, Iran
| | - Mahdi Barazesh
- School of Paramedical Sciences, Gerash University of Medical Sciences, Gerash, Iran
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3
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Differential Uridyl-diphosphate-Glucuronosyl Transferase 1A enzymatic arsenal explains the specific cytotoxicity of resveratrol towards tumor colorectal cells. J Funct Foods 2022. [DOI: 10.1016/j.jff.2022.105345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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4
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Levitz TS, Drennan CL. Starting a new chapter on class Ia ribonucleotide reductases. Curr Opin Struct Biol 2022; 77:102489. [PMID: 36272229 DOI: 10.1016/j.sbi.2022.102489] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 09/13/2022] [Accepted: 09/16/2022] [Indexed: 01/21/2023]
Abstract
Ribonucleotide reductases (RNRs) use radical-based chemistry to convert ribonucleotides into deoxyribonucleotides, an essential step in DNA biosynthesis and repair. There are multiple RNR classes, the best studied of which is the class Ia RNR that is found in Escherichia coli, eukaryotes including humans, and many pathogenic and nonpathogenic prokaryotes. This review covers recent advances in our understanding of class Ia RNRs, including a recent reporting of a structure of the active state of the E. coli enzyme and the impacts that the structure has had on spurring research into the mechanism of long-range radical transfer. Additionally, the review considers other recent structural and biochemical research on class Ia RNRs and the potential of that work for the development of anticancer and antibiotic therapeutics.
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Affiliation(s)
- Talya S Levitz
- Department of Biology, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA. https://twitter.com/@TalyaLevitz
| | - Catherine L Drennan
- Department of Biology, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA; Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA; Howard Hughes Medical Institute, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA.
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5
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Li Y, YuF X, Wang W, Jiang L, Cao S, Fan T. Resveratrol improves postharvest quality of tomato fruists by enhancing the antioxidant defense system and inhibiting ethylene biosynthesis. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2022; 59:4313-4321. [PMID: 36193460 PMCID: PMC9525471 DOI: 10.1007/s13197-022-05502-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 01/28/2022] [Accepted: 05/24/2022] [Indexed: 06/16/2023]
Abstract
Resveratrol, the most widely studied phytoalexin, derived from the skin of grapes and other fruits. Evidence from numerous studies have confirmed its extensive bioactivities, such as antioxidation, anti-inflammatory and anticancer, as well as to promote antiaging effects in organisms. However, the effect of resveratrol on prolonging the postharvest storage of tomato fruits is still unknown. Here, our data provide evidence that tomato fruits applied 200 μM resveratrol displayed a significant delay in changes of weight loss, titratable acidity, soluble solids concentration, soluble protein, vitamin C and lycopene content compared to control fruits during storage. In addition, resveratrol treatment could stimulate the antioxidant defense system to inhibit the production of ROS and down-regulate the expression of ethylene biosynthesis genes. Taken together, our results suggest that resveratrol could benefit in delaying senescence and preserving the postharvest quality of tomato fruits.
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Affiliation(s)
- Yaping Li
- School of Food and Biological Engineering, Hefei University of Technology, No. 193 Tunxi Road, Hefei, 230009 Anhui People’s Republic of China
| | - Xin YuF
- School of Food and Biological Engineering, Hefei University of Technology, No. 193 Tunxi Road, Hefei, 230009 Anhui People’s Republic of China
| | - Wei Wang
- School of Food and Biological Engineering, Hefei University of Technology, No. 193 Tunxi Road, Hefei, 230009 Anhui People’s Republic of China
| | - Li Jiang
- School of Food and Biological Engineering, Hefei University of Technology, No. 193 Tunxi Road, Hefei, 230009 Anhui People’s Republic of China
| | - Shuqing Cao
- School of Food and Biological Engineering, Hefei University of Technology, No. 193 Tunxi Road, Hefei, 230009 Anhui People’s Republic of China
| | - Tingting Fan
- School of Food and Biological Engineering, Hefei University of Technology, No. 193 Tunxi Road, Hefei, 230009 Anhui People’s Republic of China
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6
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Ganji A, Jalali-Mashayekhi F, Hajihossein R, Eslamirad Z, Bayat PD, Sakhaie M. Anti-parasitic effects of resveratrol on protoscolices and hydatid cyst layers. Exp Parasitol 2022; 241:108360. [PMID: 35995249 DOI: 10.1016/j.exppara.2022.108360] [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: 08/22/2021] [Revised: 07/17/2022] [Accepted: 08/16/2022] [Indexed: 11/25/2022]
Abstract
The main goal of the current study was to evaluate the effectiveness of resveratrol (RESV) on protoscolices and hydatid cysts of Echinococcus granolosus. Echinococcus granolosus protoscolices and hydatid cyst were exposed to RPMI, DMSO, formalin, mebendazole, and different concentrations of RESV in vitro. Then, viability, GGT, and caspase-3 activity of protoscolices were evaluated using light microscopy, colorimetric, and enzymatic assay, respectively. Tissue changes and expression of caspase-3 apoptosis were analyzed on the hydatid cyst wall by histologic and immunohistochemistry methods. The cell toxicity effect of RESV was evaluated on mouse PBMCs by Annexin V-FITC assay. The RESV-treated protoscolices showed loss of viability, increased gamma-glutamyl transpeptidase, and caspase-3 activity with significant differences compared to all control groups (P < 0.05). Dose and time dependence of mortality, GGT, and caspase-3 enzymatic activity was confirmed in the protoscolices of Echinococcus granulosus treated by RESV. Also, the tissue changes and apoptosis were prominent in RESV-treated hydatid cyst layers; however, tissue changes were only time-dependent, and RESV concentration had no apparent effect on tissue. In cell toxicity evaluation, RESV is safe without any significant apoptosis induction from 31.5 to 250 μg/ml; however, it was significant at 350 and 500 μg/ml in PBMCs.
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Affiliation(s)
- Ali Ganji
- Department of Microbiology and Immunology, School of Medicine, Arak University of Medical Sciences, Arak, Iran; Molecular and Medicine Research Center, Arak University of Medical Sciences, Arak, Iran.
| | - Farideh Jalali-Mashayekhi
- Department of Biochemistry and Genetics, School of Medicine, Arak University of Medical Sciences, Arak, Iran.
| | - Reza Hajihossein
- Department of Parasitology and Mycology, School of Medicine, Arak University of Medical Sciences, Arak, Iran.
| | - Zahra Eslamirad
- Department of Parasitology and Mycology, School of Medicine, Arak University of Medical Sciences, Arak, Iran.
| | - Parvin-Dokht Bayat
- Department of Anatomy, School of Medicine, Arak University of Medical Sciences, Arak, Iran.
| | - Mohammadhasan Sakhaie
- Department of Anatomy, School of Medicine, Arak University of Medical Sciences, Arak, Iran.
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7
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Rufino-Palomares EE, Pérez-Jiménez A, García-Salguero L, Mokhtari K, Reyes-Zurita FJ, Peragón-Sánchez J, Lupiáñez JA. Nutraceutical Role of Polyphenols and Triterpenes Present in the Extracts of Fruits and Leaves of Olea europaea as Antioxidants, Anti-Infectives and Anticancer Agents on Healthy Growth. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27072341. [PMID: 35408740 PMCID: PMC9000726 DOI: 10.3390/molecules27072341] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 03/28/2022] [Accepted: 04/01/2022] [Indexed: 11/16/2022]
Abstract
There is currently a worldwide consensus and recognition of the undoubted health benefits of the so-called Mediterranean diet, with its intake being associated with a lower risk of mortality. The most important characteristics of this type of diet are based on the consumption of significant amounts of fruit, vegetables, legumes, and nuts, which provide, in addition to some active ingredients, fiber and a proportion of vegetable protein, together with extra virgin olive oil (EVOO) as the main sources of vegetable fat. Fish and meat from poultry and other small farm animals are the main sources of protein. One of the main components, as already mentioned, is EVOO, which is rich in monounsaturated fatty acids and to a lesser extent in polyunsaturated fatty acids. The intake of this type of nutrient also provides an important set of phytochemicals whose health potential is widely spread and agreed upon. These phytochemicals include significant amounts of anthocyanins, stilbenes, flavonoids, phenolic acids, and terpenes of varying complexities. Therefore, the inclusion in the diet of this type of molecules, with a proven healthy effect, provides an unquestionable preventive and/or curative activity on an important group of pathologies related to cardiovascular, infectious, and cancerous diseases, as well as those related to the metabolic syndrome. The aim of this review is therefore to shed light on the nutraceutical role of two of the main phytochemicals present in Olea europaea fruit and leaf extracts, polyphenols, and triterpenes, on healthy animal growth. Their immunomodulatory, anti-infective, antioxidant, anti-aging, and anti-carcinogenic capabilities show them to be potential nutraceuticals, providing healthy growth.
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Affiliation(s)
- Eva E. Rufino-Palomares
- Department of Biochemistry and Molecular Biology I, Faculty of Sciences, University of Granada, Avenida Fuentenueva, 18071 Granada, Spain; (E.E.R.-P.); (L.G.-S.); (F.J.R.-Z.)
| | - Amalia Pérez-Jiménez
- Department of Zoology, Faculty of Sciences, University of Granada, Avenida Fuentenueva, 18071 Granada, Spain;
| | - Leticia García-Salguero
- Department of Biochemistry and Molecular Biology I, Faculty of Sciences, University of Granada, Avenida Fuentenueva, 18071 Granada, Spain; (E.E.R.-P.); (L.G.-S.); (F.J.R.-Z.)
| | - Khalida Mokhtari
- Department of Biology, Faculty of Sciences, Mohammed I University, Oujda BP 717 60000, Morocco;
| | - Fernando J. Reyes-Zurita
- Department of Biochemistry and Molecular Biology I, Faculty of Sciences, University of Granada, Avenida Fuentenueva, 18071 Granada, Spain; (E.E.R.-P.); (L.G.-S.); (F.J.R.-Z.)
| | - Juan Peragón-Sánchez
- Department of Experimental Biology, Biochemistry and Molecular Biology Section, Faculty of Experimental Biology, University of Jaén, 23071 Jaén, Spain;
| | - José A. Lupiáñez
- Department of Biochemistry and Molecular Biology I, Faculty of Sciences, University of Granada, Avenida Fuentenueva, 18071 Granada, Spain; (E.E.R.-P.); (L.G.-S.); (F.J.R.-Z.)
- Correspondence: ; Tel.: +34-958-243-089; Fax: +34-958-249-945
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8
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Wu Y, Crich D, Pegan SD, Lou L, Hansen MC, Booth C, Desrochers E, Mullininx LN, Starling EB, Chang KY, Xie ZR. Polyphenols as Potential Inhibitors of SARS-CoV-2 RNA Dependent RNA Polymerase (RdRp). Molecules 2021; 26:7438. [PMID: 34946521 PMCID: PMC8706955 DOI: 10.3390/molecules26247438] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 11/08/2021] [Accepted: 12/02/2021] [Indexed: 01/18/2023] Open
Abstract
An increasing number of studies have demonstrated the antiviral nature of polyphenols, and many polyphenols have been proposed to inhibit SARS-CoV or SARS-CoV-2. Our previous study revealed the inhibitory mechanisms of polyphenols against DNA polymerase α and HIV reverse transcriptase to show that polyphenols can block DNA elongation by competing with the incoming NTPs. Here we applied computational approaches to examine if some polyphenols can also inhibit RNA polymerase (RdRp) in SARS-CoV-2, and we identified some better candidates than remdesivir, the FDA-approved drug against RdRp, in terms of estimated binding affinities. The proposed compounds will be further examined to develop new treatments for COVID-19.
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Affiliation(s)
- Yifei Wu
- School of Electrical and Computer Engineering, College of Engineering, University of Georgia, Athens, GA 30602, USA; (Y.W.); (L.L.)
| | - David Crich
- Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, University of Georgia, Athens, GA 30602, USA;
| | - Scott D. Pegan
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, CA 92521, USA;
| | - Lei Lou
- School of Electrical and Computer Engineering, College of Engineering, University of Georgia, Athens, GA 30602, USA; (Y.W.); (L.L.)
| | - Madelyn C. Hansen
- Franklin College of Arts and Sciences, University of Georgia, Athens, GA 30602, USA; (M.C.H.); (C.B.); (E.D.); (L.N.M.); (E.B.S.)
| | - Carson Booth
- Franklin College of Arts and Sciences, University of Georgia, Athens, GA 30602, USA; (M.C.H.); (C.B.); (E.D.); (L.N.M.); (E.B.S.)
| | - Ellison Desrochers
- Franklin College of Arts and Sciences, University of Georgia, Athens, GA 30602, USA; (M.C.H.); (C.B.); (E.D.); (L.N.M.); (E.B.S.)
| | - Lauren Nicole Mullininx
- Franklin College of Arts and Sciences, University of Georgia, Athens, GA 30602, USA; (M.C.H.); (C.B.); (E.D.); (L.N.M.); (E.B.S.)
| | - Edward B. Starling
- Franklin College of Arts and Sciences, University of Georgia, Athens, GA 30602, USA; (M.C.H.); (C.B.); (E.D.); (L.N.M.); (E.B.S.)
| | - Kuan Y. Chang
- Department of Computer Science and Engineering, National Taiwan Ocean University, Keelung 202, Taiwan
| | - Zhong-Ru Xie
- School of Electrical and Computer Engineering, College of Engineering, University of Georgia, Athens, GA 30602, USA; (Y.W.); (L.L.)
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9
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Wu Y, Pegan SD, Crich D, Desrochers E, Starling EB, Hansen MC, Booth C, Nicole Mullininx L, Lou L, Chang KY, Xie ZR. Polyphenols as alternative treatments of COVID-19. Comput Struct Biotechnol J 2021; 19:5371-5380. [PMID: 34567475 PMCID: PMC8452152 DOI: 10.1016/j.csbj.2021.09.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 09/09/2021] [Accepted: 09/18/2021] [Indexed: 01/23/2023] Open
Abstract
Although scientists around the world have put lots of effort into the development of new treatments for COVID-19 since the outbreak, no drugs except Veklury (remdesivir) have been approved by FDA. There is an urgent need to discover some alternative antiviral treatment for COVID-19. Because polyphenols have been shown to possess antiviral activities, here we conducted a large-scale virtual screening for more than 400 polyphenols. Several lead compounds such as Petunidin 3-O-(6″-p-coumaroyl-glucoside) were identified to have promising binding affinities and convincing binding mechanisms. Analyzing the docking results and ADME properties sheds light on the potential efficacy of the top-ranked drug candidates and pinpoints the key residues on the target proteins for the future of drug development.
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Affiliation(s)
- Yifei Wu
- School of Electrical and Computer Engineering, College of Engineering, University of Georgia, Athens 30602, GA, USA
| | - Scott D Pegan
- Division of Biomedical Sciences., School of Medicine, University of California Riverside, 92521, CA, USA
| | - David Crich
- Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, University of Georgia, Athens 30602, GA, USA
| | - Ellison Desrochers
- Franklin College of Arts and Sciences, University of Georgia, Athens 30602, GA, USA
| | - Edward B Starling
- Franklin College of Arts and Sciences, University of Georgia, Athens 30602, GA, USA
| | - Madelyn C Hansen
- Franklin College of Arts and Sciences, University of Georgia, Athens 30602, GA, USA
| | - Carson Booth
- Franklin College of Arts and Sciences, University of Georgia, Athens 30602, GA, USA
| | | | - Lei Lou
- School of Electrical and Computer Engineering, College of Engineering, University of Georgia, Athens 30602, GA, USA
| | - Kuan Y Chang
- Department of Computer Science and Engineering, National Taiwan Ocean University, Keelung 202, Taiwan, ROC
| | - Zhong-Ru Xie
- School of Electrical and Computer Engineering, College of Engineering, University of Georgia, Athens 30602, GA, USA
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10
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Nachtergael A, Lanterbecq D, Spanoghe M, Belayew A, Duez P. Effects of Chemopreventive Natural Compounds on the Accuracy of 8-oxo-7,8-dihydro-2'-deoxyguanosine Translesion Synthesis. PLANTA MEDICA 2021; 87:868-878. [PMID: 34237787 DOI: 10.1055/a-1527-1435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Translesion synthesis is a DNA damage tolerance mechanism that relies on a series of specialized DNA polymerases able to bypass a lesion on a DNA template strand during replication or post-repair synthesis. Specialized translesion synthesis DNA polymerases pursue replication by inserting a base opposite to this lesion, correctly or incorrectly depending on the lesion nature, involved DNA polymerase(s), sequence context, and still unknown factors. To measure the correct or mutagenic outcome of 8-oxo-7,8-dihydro-2'-deoxyguanosine bypass by translesion synthesis, a primer-extension assay was performed in vitro on a template DNA bearing this lesion in the presence of nuclear proteins extracted from human intestinal epithelial cells (FHs 74 Int cell line); the reaction products were analyzed by both denaturing capillary electrophoresis (to measure the yield of translesion elongation) and pyrosequencing (to determine the identity of the nucleotide inserted in front of the lesion). The influence of 14 natural polyphenols on the correct or mutagenic outcome of translesion synthesis through 8-oxo-7,8-dihydro-2'-deoxyguanosine was then evaluated in 2 experimental conditions by adding the polyphenol either (i) to the reaction mix during the primer extension assay; or (ii) to the culture medium, 24 h before cell harvest and nuclear proteins extraction. Most of the tested polyphenols significantly influenced the outcome of translesion synthesis, either through an error-free (apigenin, baicalein, sakuranetin, and myricetin) or a mutagenic pathway (epicatechin, chalcone, genistein, magnolol, and honokiol).
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Affiliation(s)
- Amandine Nachtergael
- Unit of Therapeutic Chemistry and Pharmacognosy, Research Institute for Health Sciences and Technology, University of Mons (UMONS), Mons, Belgium
| | - Déborah Lanterbecq
- Laboratory of Biotechnology and Applied Biology, Haute Ecole Provinciale de Hainaut CONDORCET, Ath, Belgium
| | - Martin Spanoghe
- Laboratory of Biotechnology and Applied Biology, Haute Ecole Provinciale de Hainaut CONDORCET, Ath, Belgium
| | - Alexandra Belayew
- Department of Metabolic and Molecular Biochemistry, Research Institute for Health Sciences and Technology, University of Mons (UMONS), Mons, Belgium
| | - Pierre Duez
- Unit of Therapeutic Chemistry and Pharmacognosy, Research Institute for Health Sciences and Technology, University of Mons (UMONS), Mons, Belgium
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11
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Chen Y, Xi X, Ma C, Zhou M, Chen X, Ye Z, Ge L, Wu Q, Chen T, Wang L, Kwok HF. Structure-Activity Relationship and Molecular Docking of a Kunitz-Like Trypsin Inhibitor, Kunitzin-AH, from the Skin Secretion of Amolops hainanensis. Pharmaceutics 2021; 13:pharmaceutics13070966. [PMID: 34206897 PMCID: PMC8309051 DOI: 10.3390/pharmaceutics13070966] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/16/2021] [Accepted: 06/21/2021] [Indexed: 01/10/2023] Open
Abstract
Kunitz-like trypsin inhibitors are one of the most noteworthy research objects owing to their significance in pharmacological studies, including anticarcinogenic activity, obesity regulation and anticoagulation. In the current study, a novel Kunitz-like trypsin inhibitor, Kunitzin-AH, was isolated from the skin secretion of Amolops hainanensis. The novel peptide displayed a modest trypsin inhibitory activity with the inhibitor constant (Ki) value of 1.18 ± 0.08 µM without inducing damage to healthy horse erythrocytes. Then, a series of shortened variants of Kunitzin-AH were designed by truncating a peptide loop and site mutation inside the loop to illustrate the structure–activity relationship of the trypsin inhibition function. Among the variants, a significant decrease was observed for the Cys-Cys loop domain, while the extension of an Arg at N-terminus (RCKAAFC) retained the inhibitory activity, indicating that the -RCK-motif is essential in forming the reactive domain for exerting the inhibitory activity. Furthermore, substitutions of Ala by hydrophobic or hydrophilic residues decreased the activity, indicating suitable steric hindrance provides convenience for the combination of trypsin. Additionally, the conformational simulation of the analogues processed with Chimera and Gromacs and further combination simulations between the peptides and trypsin conducted with HDOCK offered a potential opportunity for the natural trypsin inhibitory drug design. The truncated sequence, AH-798, may be a good replacement for the full-length peptide, and can be optimized via cyclization for further study.
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Affiliation(s)
- Yuqing Chen
- School of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; (Y.C.); (C.M.); (M.Z.); (X.C.); (Z.Y.); (T.C.); (L.W.)
| | - Xinping Xi
- School of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; (Y.C.); (C.M.); (M.Z.); (X.C.); (Z.Y.); (T.C.); (L.W.)
- Institute of Translational Medicine, Faculty of Health Sciences, University of Macau, Avenida da Universidade, Taipa, Macau, China
- Correspondence: (X.X.); (H.F.K.)
| | - Chengbang Ma
- School of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; (Y.C.); (C.M.); (M.Z.); (X.C.); (Z.Y.); (T.C.); (L.W.)
| | - Mei Zhou
- School of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; (Y.C.); (C.M.); (M.Z.); (X.C.); (Z.Y.); (T.C.); (L.W.)
| | - Xiaoling Chen
- School of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; (Y.C.); (C.M.); (M.Z.); (X.C.); (Z.Y.); (T.C.); (L.W.)
| | - Zhuming Ye
- School of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; (Y.C.); (C.M.); (M.Z.); (X.C.); (Z.Y.); (T.C.); (L.W.)
| | - Lilin Ge
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China; (L.G.); (Q.W.)
| | - Qinan Wu
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China; (L.G.); (Q.W.)
| | - Tianbao Chen
- School of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; (Y.C.); (C.M.); (M.Z.); (X.C.); (Z.Y.); (T.C.); (L.W.)
| | - Lei Wang
- School of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; (Y.C.); (C.M.); (M.Z.); (X.C.); (Z.Y.); (T.C.); (L.W.)
| | - Hang Fai Kwok
- Institute of Translational Medicine, Faculty of Health Sciences, University of Macau, Avenida da Universidade, Taipa, Macau, China
- Correspondence: (X.X.); (H.F.K.)
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