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Wang J, Ji J, Zhong Y, Meng W, Wan S, Ding X, Chen Z, Wu W, Jia K, Li S. Construction of recombinant fluorescent LSDV for high-throughput screening of antiviral drugs. Vet Res 2024; 55:33. [PMID: 38493160 PMCID: PMC10943802 DOI: 10.1186/s13567-024-01281-2] [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: 09/25/2023] [Accepted: 01/29/2024] [Indexed: 03/18/2024] Open
Abstract
Lumpy skin disease virus (LSDV) infection is a major socio-economic issue that seriously threatens the global cattle-farming industry. Here, a recombinant virus LSDV-ΔTK/EGFP, expressing enhanced green fluorescent protein (EGFP), was constructed with a homologous recombination system and applied to the high-throughput screening of antiviral drugs. LSDV-ΔTK/EGFP replicates in various kidney cell lines, consistent with wild-type LSDV. The cytopathic effect, viral particle morphology, and growth performance of LSDV-ΔTK/EGFP are consistent with those of wild-type LSDV. High-throughput screening allowed to identify several molecules that inhibit LSDV-ΔTK/EGFP replication. The strong inhibitory effect of theaflavin on LSDV was identified when 100 antiviral drugs were screened in vitro. An infection time analysis showed that theaflavin plays a role in the entry of LSDV into cells and in subsequent viral replication stages. The development of this recombinant virus will contribute to the development of LSDV-directed antiviral drugs and the study of viral replication and mechanisms of action.
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Affiliation(s)
- Jingyu Wang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Technological Engineering Research Center for Pet, Guangzhou, China
| | - Jinzhao Ji
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Technological Engineering Research Center for Pet, Guangzhou, China
| | - Yongcheng Zhong
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Technological Engineering Research Center for Pet, Guangzhou, China
| | - Wenxin Meng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Technological Engineering Research Center for Pet, Guangzhou, China
| | - Shaobin Wan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Technological Engineering Research Center for Pet, Guangzhou, China
| | - Xiaoqing Ding
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Technological Engineering Research Center for Pet, Guangzhou, China
| | - Zihan Chen
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Technological Engineering Research Center for Pet, Guangzhou, China
| | - Weiyong Wu
- Agriculture and Rural Affairs Bureau of Luocheng Mulao Autonomous County, Guangxi, China
| | - Kun Jia
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.
- Guangdong Technological Engineering Research Center for Pet, Guangzhou, China.
| | - Shoujun Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.
- Guangdong Technological Engineering Research Center for Pet, Guangzhou, China.
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Cai X, Wang Z, Li X, Zhang J, Ren Z, Shao Y, Xu Y, Zhu Y. Emodin as an Inhibitor of PRV Infection In Vitro and In Vivo. Molecules 2023; 28:6567. [PMID: 37764342 PMCID: PMC10537396 DOI: 10.3390/molecules28186567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/17/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open
Abstract
Pseudorabies (PR) is an acute and severe infectious disease caused by pseudorabies virus (PRV). Once the virus infects pigs, it is difficult to eliminate, resulting in major economic losses to the global pig industry. In addition, reports of human infection with PRV suggest that the virus is a potential threat to human health; thus, its significance to public health should be considered. In this paper, the anti-PRV activities of emodin in vitro and in vivo, and its mechanism of action were studied. The results showed that emodin inhibited the proliferation of PRV in PK15 cells in a dose-dependent manner, with an IC50 of 0.127 mg/mL and a selection index of 5.52. The addition of emodin at different stages of viral infection showed that emodin inhibited intracellular replication. Emodin significantly inhibited the expression of the IE180, EP0, UL29, UL44, US6, and UL27 genes of PRV within 48 h. Emodin also significantly inhibited the expression of PRV gB and gD proteins. The molecular docking results suggested that emodin might form hydrogen bonds with PRV gB and gD proteins and affect the structure of viral proteins. Emodin effectively inhibited the apoptosis induced by PRV infection. Moreover, emodin showed a good protective effect on PRV-infected mice. During the experimental period, all the control PRV-infected mice died resulting in a survival rate of 0%, while the survival rate of emodin-treated mice was 28.5%. Emodin also significantly inhibited the replication of PRV in the heart, liver, brain, kidneys and lungs of mice and alleviated tissue and organ damage caused by PRV infection. Emodin was able to combat viral infection by regulating the levels of the cytokines TNF-α, IFN-γ, IL-6, and IL-4 in the sera of infected mice. These results indicate that emodin has good anti-PRV activity in vitro and in vivo, and is expected to be a new agent for the prevention and control of PRV infection.
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Affiliation(s)
- Xiaojing Cai
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (X.C.); (Z.W.); (Z.R.); (Y.S.); (Y.X.)
| | - Zhiying Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (X.C.); (Z.W.); (Z.R.); (Y.S.); (Y.X.)
| | - Xiaocheng Li
- Harbin Da BEINONG Animal Husbandry Technology Co., Ltd., Harbin 150030, China; (X.L.); (J.Z.)
| | - Jing Zhang
- Harbin Da BEINONG Animal Husbandry Technology Co., Ltd., Harbin 150030, China; (X.L.); (J.Z.)
| | - Zhiyuan Ren
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (X.C.); (Z.W.); (Z.R.); (Y.S.); (Y.X.)
| | - Yi Shao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (X.C.); (Z.W.); (Z.R.); (Y.S.); (Y.X.)
| | - Yongkang Xu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (X.C.); (Z.W.); (Z.R.); (Y.S.); (Y.X.)
| | - Yan Zhu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (X.C.); (Z.W.); (Z.R.); (Y.S.); (Y.X.)
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Zhang T, Potgieter TI, Kosche E, Rückert J, Ostermann E, Schulz T, Empting M, Brune W. Thioxothiazolo[3,4-a]quinazoline derivatives inhibit the human cytomegalovirus alkaline nuclease. Antiviral Res 2023; 217:105696. [PMID: 37541625 DOI: 10.1016/j.antiviral.2023.105696] [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: 06/05/2023] [Revised: 07/31/2023] [Accepted: 08/01/2023] [Indexed: 08/06/2023]
Abstract
Human cytomegalovirus (HCMV, human herpesvirus 5) is an opportunistic pathogen responsible for serious disease in immunocompromised patients. Current antiviral therapies rely predominantly on drugs interfering with viral DNA replication and packaging. However, the serious side effects of existing drugs and the emergence of drug resistance indicate the need for new targets for anti-HCMV therapy. One such target is the viral alkaline nuclease (AN), an enzyme highly conserved among the Herpesviridae. In this study, we validated the HCMV AN, encoded by the viral UL98 open reading frame, as a drug target by demonstrating that a UL98-deficient HCMV mutant is severely attenuated and shows a reduced ability to spread in cell culture. We established a fluorescence-based enzyme assay suitable for high-throughput screening and used it on a small-molecule compound library. The most promising hit, a thioxothiazolo[3,4-a]quinazoline derivative, blocked AN activity in vitro and inhibited HCMV replication in plaque reduction (PRA) and fluorescence reduction assays (FRA). Several derivatives of the hit compound were tested, some of which had similar or better inhibitory activities. The most potent derivative of hit scaffold A, compound AD-51, inhibited HCMV replication with a 50% effective concentrations (EC50) of 0.9 μM in the FRA and 1.1 μM in the PRA. AD-51 was also active against ganciclovir, foscarnet, and letermovir-resistant HCMVs. Moreover, it inhibited herpes simplex virus, Kaposi's sarcoma-associated herpesvirus, and murine CMV, a mouse virus serving as a model for HCMV. These results suggest that thioxothiazolo[3,4-a]quinazoline derivatives are a new class of herpesvirus inhibitors targeting the viral AN.
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Affiliation(s)
- Tianyu Zhang
- Leibniz Institute of Virology (LIV), Hamburg, Germany; German Center for Infection Research (DZIF), Partner Site Hamburg-Lübeck-Borstel-Riems, Germany
| | - Theodore I Potgieter
- Leibniz Institute of Virology (LIV), Hamburg, Germany; German Center for Infection Research (DZIF), Partner Site Hamburg-Lübeck-Borstel-Riems, Germany
| | - Erik Kosche
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Saarbrücken, Germany; Department of Pharmacy, Saarland University, Saarbrücken, Germany; German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, Germany
| | - Jessica Rückert
- German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, Germany; Institute of Virology, Hannover Medical School, Hannover, Germany
| | | | - Thomas Schulz
- German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, Germany; Institute of Virology, Hannover Medical School, Hannover, Germany
| | - Martin Empting
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Saarbrücken, Germany; Department of Pharmacy, Saarland University, Saarbrücken, Germany; German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, Germany
| | - Wolfram Brune
- Leibniz Institute of Virology (LIV), Hamburg, Germany; German Center for Infection Research (DZIF), Partner Site Hamburg-Lübeck-Borstel-Riems, Germany.
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Wu CC, Chen MS, Lee TY, Cheng YJ, Tsou HH, Huang TS, Cho DY, Chen JY. Screening and identification of emodin as an EBV DNase inhibitor to prevent its biological functions. Virol J 2023; 20:148. [PMID: 37443068 PMCID: PMC10339607 DOI: 10.1186/s12985-023-02107-x] [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: 12/13/2022] [Accepted: 06/21/2023] [Indexed: 07/15/2023] Open
Abstract
BACKGROUND The Epstein-Barr virus (EBV) is a prevalent oncovirus associated with a variety of human illnesses. BGLF5, an EBV DNase with alkaline nuclease (AN) activity, plays important roles in the viral life cycle and progression of human malignancies and has been suggested as a possible diagnostic marker and target for cancer therapy. Methods used conventionally for the detection of AN activity, radioactivity-based nuclease activity assay and DNA digestion detection by gel electrophoresis, are not suitable for screening AN inhibitors; the former approach is unsafe, and the latter is complicated. In the present study, a fluorescence-based nuclease activity assay was used to screen several natural compounds and identify an EBV DNase inhibitor. RESULTS Fluorescence-based nuclease activity assays, in which the DNA substrate is labelled with PicoGreen dye, are cheaper, safer, and easier to perform. Herein, the results of the fluorescence-based nuclease activity assay were consistent with the results of the two conventional methods. In addition, the PicoGreen-labelling method was applied for the biochemical characterisation of viral nucleases. Using this approach, we explored EBV DNase inhibitors. After several rounds of screening, emodin, an anthraquinone derivative, was found to possess significant anti-EBV DNase activity. We verified the efficacy of emodin using the conventional DNA-cleavage assay. Furthermore, using comet assay and micronucleus formation detection, we confirmed that emodin can inhibit DNase-induced DNA damage and genomic instability. Additionally, emodin treatment inhibited EBV production. CONCLUSIONS Using a PicoGreen-mediated nuclease activity assay, we successfully demonstrated that emodin has the potential to inhibit EBV DNase nuclease activity. Emodin also inhibits EBV DNase-related biological functions, suggesting that it is a potential inhibitor of EBV DNase.
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Affiliation(s)
- Chung-Chun Wu
- Translational Cell Therapy Center, Department of Medical Research, China Medical University Hospital, No. 2, Yude Rd., North Dist, Taichung City, 40447, Taiwan.
| | - Mei-Shu Chen
- National Institute of Cancer Research, National Health Research Institutes, No.35, Keyan Road, Zhunan Town, Miaoli County, Taiwan
| | - Ting-Ying Lee
- Translational Cell Therapy Center, Department of Medical Research, China Medical University Hospital, No. 2, Yude Rd., North Dist, Taichung City, 40447, Taiwan
| | - Yu-Jhen Cheng
- National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Zhunan, Taiwan
| | - Hsiao-Hui Tsou
- Institute of Population Health Sciences, National Health Research Institutes, Zhunan, Taiwan
| | - Tze-Sing Huang
- National Institute of Cancer Research, National Health Research Institutes, No.35, Keyan Road, Zhunan Town, Miaoli County, Taiwan
| | - Der-Yang Cho
- Translational Cell Therapy Center, Department of Medical Research, China Medical University Hospital, No. 2, Yude Rd., North Dist, Taichung City, 40447, Taiwan
| | - Jen-Yang Chen
- National Institute of Cancer Research, National Health Research Institutes, No.35, Keyan Road, Zhunan Town, Miaoli County, Taiwan.
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Gazquez Casals A, Berkowitz AJ, Yu AJ, Waters HE, Schiavone DV, Kapkayeva DM, Morrison LA, Murelli RP. Antiviral activity of amide-appended α-hydroxytropolones against herpes simplex virus-1 and -2. RSC Adv 2023; 13:8743-8752. [PMID: 36936842 PMCID: PMC10016935 DOI: 10.1039/d2ra06749h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 02/28/2023] [Indexed: 03/17/2023] Open
Abstract
α-Hydroxytropolones (αHTs) have potent antiviral activity against herpes simplex virus-1 and -2 (HSV-1 and HSV-2) in cell culture, including against acyclovir-resistant mutants, and as a result have the potential to be developed as antiviral drugs targeting these viruses. We recently described a convenient final-step amidation strategy to their synthesis, and this was used to generate 57 amide-substituted αHTs that were tested against hepatitis B virus. The following manuscript describes the evaluation of this library against HSV-1, as well as a subset against HSV-2. The structure-function analysis obtained from these studies demonstrates the importance of lipophilicity and rigidity to αHT-based anti-HSV potency, consistent with our prior work on smaller libraries. We used this information to synthesize and test a targeted library of 4 additional amide-appended αHTs. The most potent of this new series had a 50% effective concentration (EC50) for viral inhibition of 72 nM, on par with the most potent αHT antivirals we have found to date. Given the ease of synthesis of amide-appended αHTs, this new class of antiviral compounds and the chemistry to make them should be highly valuable in future anti-HSV drug development.
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Affiliation(s)
- Andreu Gazquez Casals
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine St. Louis MO USA
| | - Alex J Berkowitz
- Department of Chemistry, Brooklyn College, The City University of New York Brooklyn NY USA
- PhD Program in Chemistry, The Graduate Center, The City University of New York New York NY USA
| | - Alice J Yu
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine St. Louis MO USA
| | - Hope E Waters
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine St. Louis MO USA
| | - Daniel V Schiavone
- Department of Chemistry, Brooklyn College, The City University of New York Brooklyn NY USA
- PhD Program in Chemistry, The Graduate Center, The City University of New York New York NY USA
| | - Diana M Kapkayeva
- Department of Chemistry, Brooklyn College, The City University of New York Brooklyn NY USA
| | - Lynda A Morrison
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine St. Louis MO USA
| | - Ryan P Murelli
- Department of Chemistry, Brooklyn College, The City University of New York Brooklyn NY USA
- PhD Program in Chemistry, The Graduate Center, The City University of New York New York NY USA
- PhD Program in Biochemistry, The Graduate Center, The City University of New York New York NY USA
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Cao K, Zhang Y, Yao Q, Peng Y, Pan Q, Jiao Q, Ren K, Sun F, Zhang Q, Guo R, Zhang J, Chen T. Hypericin blocks the function of HSV-1 alkaline nuclease and suppresses viral replication. JOURNAL OF ETHNOPHARMACOLOGY 2022; 296:115524. [PMID: 35811028 DOI: 10.1016/j.jep.2022.115524] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 06/23/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Hypericum perforatum L. has a long history in many countries of being used as a herbal medicine. It is also widely used in Chinese herbal medicine for the treatment of infections. Hypericin, a main component extracted from Hypericum perforatum L., has attracted the attention of many researchers for its remarkable antiviral, antitumor and antidepressant effects. AIM OF THE STUDY To find plant molecules that inhibit the alkaline nuclease (AN) of herpes simplex virus type 1 (HSV-1) and suppress viral replication. MATERIALS AND METHODS Bioinformatics methods were used to determine which compounds from a variety of natural compounds in our laboratory interact with AN. By this means we predicted that hypericin may interact with AN and suppress HSV-1 replication. Experiments were then carried out to verify whether hypericin inhibits the bioactivity of AN. The Pichia pastoris expression system was used to obtain recombinant AN. The exonuclease and endonuclease activity of AN treated with hypericin were tested by electrophoresis. Immunohistochemical staining of the HSV-1 nucleocapsids was used to find out whether hypericin inhibits the intracellular function of AN. Real-time PCR and western blotting analysis were performed to test viral gene expression and viral protein synthesis. The extent of viral replication inhibited by hypericin was determined by a plaque assay and a time of addition assay. RESULTS Recombinant AN was obtained by Pichia pastoris expression system. The exonuclease and endonuclease activity of recombinant AN were inhibited by hypericin in the electrophoresis assay. Hypericin showed no inhibitory effect on BeyoZonase™ Super Nuclease or DNase I. T5 Exonuclease activity was inhibited partially by10 μM hypericin, and was completely suppressed by 50 μM hypericin. Hind Ⅲ was inhibited by hypericin at concentrations greater than 100 μM, but EcoR I, BamH I, and Sal I were not inhibited by hypericin. HSV-1 nucleocapsids gathered in the nucleus when the viruses were treated with hypericin. Plaque formation was significantly reduced by hypericin (EC50 against HSV-1 F is 2.59 ± 0.08 μM and EC50 against HSV-1 SM44 is 2.94 ± 0.10 μM). UL12, ICP27, ICP8, gD, and UL53 gene expression (P < 0.01, 4.0 μM hypericin treated group vs control group) and ICP4 (P < 0.05, 6.0 μM hypericin treated group vs control group), ICP8 and gD (P < 0.05, 2.0 μM hypericin treated group vs control group) protein synthesis were inhibited by hypericin. In the time of addition assay, HSV-1 was suppressed by hypericin in the early stages of viral replication. Hypericin exhibits potent virucidal activity against HSV-1 and inhibits the adsorption and penetration of HSV-1. CONCLUSION Hypericin inhibits the bioactivity of AN and suppresses HSV-1 replication. The data revealed a novel mechanism of the antiherpetic effect of hypericin.
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Affiliation(s)
- Kang Cao
- Department of Pathogen Biology, Chengdu Medical College, Chengdu, China
| | - Yan Zhang
- Department of Pathogen Biology, Chengdu Medical College, Chengdu, China; Department of Pathology, Fourth People's Hospital of Zhenjiang City, Zhenjiang, China
| | - Qian Yao
- Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu, China
| | - Yanjuan Peng
- Department of Pharmacology, Chengdu Medical College, Chengdu, China
| | - Qu Pan
- Department of Pathogen Biology, Chengdu Medical College, Chengdu, China
| | - Qiuxia Jiao
- Department of Pathogen Biology, Chengdu Medical College, Chengdu, China
| | - Ke Ren
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, China
| | - Fenghui Sun
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, China
| | - Qian Zhang
- Department of Nursing, The Second People's Hospital of Xindu District, Chengdu, China
| | - Ran Guo
- Grade 2019 of Clinical Medicine, Chengdu Medical College, Chengdu, China
| | - Jiali Zhang
- Grade 2019 of Clinical Medicine, Chengdu Medical College, Chengdu, China
| | - Tian Chen
- Department of Pathogen Biology, Chengdu Medical College, Chengdu, China.
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Wright LR, Wright DL, Weller SK. Viral Nucleases from Herpesviruses and Coronavirus in Recombination and Proofreading: Potential Targets for Antiviral Drug Discovery. Viruses 2022; 14:v14071557. [PMID: 35891537 PMCID: PMC9324378 DOI: 10.3390/v14071557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/08/2022] [Accepted: 07/11/2022] [Indexed: 02/05/2023] Open
Abstract
In this review, we explore recombination in two very different virus families that have become major threats to human health. The Herpesviridae are a large family of pathogenic double-stranded DNA viruses involved in a range of diseases affecting both people and animals. Coronaviridae are positive-strand RNA viruses (CoVs) that have also become major threats to global health and economic stability, especially in the last two decades. Despite many differences, such as the make-up of their genetic material (DNA vs. RNA) and overall mechanisms of genome replication, both human herpes viruses (HHVs) and CoVs have evolved to rely heavily on recombination for viral genome replication, adaptation to new hosts and evasion of host immune regulation. In this review, we will focus on the roles of three viral exonucleases: two HHV exonucleases (alkaline nuclease and PolExo) and one CoV exonuclease (ExoN). We will review the roles of these three nucleases in their respective life cycles and discuss the state of drug discovery efforts against these targets.
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Affiliation(s)
- Lee R. Wright
- Department of Pharmaceutical Sciences, University of Connecticut School of Pharmacy, Storrs, CT 06269, USA; (L.R.W.); (D.L.W.)
| | - Dennis L. Wright
- Department of Pharmaceutical Sciences, University of Connecticut School of Pharmacy, Storrs, CT 06269, USA; (L.R.W.); (D.L.W.)
| | - Sandra K. Weller
- Department of Molecular Biology and Biophysics, University of Connecticut School of Medicine, 263 Farmington Ave., Farmington, CT 06030, USA
- Correspondence: ; Tel.: +1-(860)-679-2310; Fax: +1-(860)-679-1239
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8
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Shao Q, Liu T, Wang W, Liu T, Jin X, Chen Z. Promising Role of Emodin as Therapeutics to Against Viral Infections. Front Pharmacol 2022; 13:902626. [PMID: 35600857 PMCID: PMC9115582 DOI: 10.3389/fphar.2022.902626] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 04/20/2022] [Indexed: 11/13/2022] Open
Abstract
Emodin is an anthraquinone derivative that is widely present in natural plants and has a wide spectrum of pharmacological effects, such as antibacterial, anti-inflammatory, anti-fibrotic and anticancer and so on. Through reviewing studies on antiviral effect of emodin in the past decades, we found that emodin exhibits ability of inhibiting the infection and replication of more than 10 viruses in vitro and in vivo, including herpes simplex virus type 1 (HSV-1) and type 2 (HSV-2), human cytomegalovirus (HCMV), Epstein-Barr virus (EBV), coxsackievirus B (CVB), hepatitis B virus (HBV), influenza A virus (IAV), SARS-CoV, viral haemorrhagic septicaemia rhabdovirus (VHSV), enterovirus 71 (EV71), dengue virus serotype 2 (DENV-2) and Zika virus (ZIKV). Therefore, this review aims to summarize the antiviral effect of emodin, in order to provide reference and hopes to support the further investigations.
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Affiliation(s)
- Qingqing Shao
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tong Liu
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wenjia Wang
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tianli Liu
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ximing Jin
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhuo Chen
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Department of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- *Correspondence: Zhuo Chen,
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Identifying HSV-1 Inhibitors from Natural Compounds via Virtual Screening Targeting Surface Glycoprotein D. Pharmaceuticals (Basel) 2022; 15:ph15030361. [PMID: 35337158 PMCID: PMC8955139 DOI: 10.3390/ph15030361] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 03/07/2022] [Accepted: 03/11/2022] [Indexed: 02/05/2023] Open
Abstract
Herpes simplex virus (HSV) infections are a worldwide health problem in need of new effective treatments. Of particular interest is the identification of antiviral agents that act via different mechanisms compared to current drugs, as these could interact synergistically with first-line antiherpetic agents to accelerate the resolution of HSV-1-associated lesions. For this study, we applied a structure-based molecular docking approach targeting the nectin-1 and herpesvirus entry mediator (HVEM) binding interfaces of the viral glycoprotein D (gD). More than 527,000 natural compounds were virtually screened using Autodock Vina and then filtered for favorable ADMET profiles. Eight top hits were evaluated experimentally in African green monkey kidney cell line (VERO) cells, which yielded two compounds with potential antiherpetic activity. One active compound (1-(1-benzofuran-2-yl)-2-[(5Z)-2H,6H,7H,8H-[1,3] dioxolo[4,5-g]isoquinoline-5-ylidene]ethenone) showed weak but significant antiviral activity. Although less potent than antiherpetic agents, such as acyclovir, it acted at the viral inactivation stage in a dose-dependent manner, suggesting a novel mode of action. These results highlight the feasibility of in silico approaches for identifying new antiviral compounds, which may be further optimized by medicinal chemistry approaches.
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Horvat M, Avbelj M, Durán-Alonso MB, Banjanac M, Petković H, Iskra J. Antiviral Activities of Halogenated Emodin Derivatives against Human Coronavirus NL63. Molecules 2021; 26:6825. [PMID: 34833917 PMCID: PMC8618202 DOI: 10.3390/molecules26226825] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/06/2021] [Accepted: 11/08/2021] [Indexed: 12/23/2022] Open
Abstract
The current COVID-19 outbreak has highlighted the need for the development of new vaccines and drugs to combat Severe Acute Respiratory Syndrome-Coronavirus-2 (SARS-CoV-2). Recently, various drugs have been proposed as potentially effective against COVID-19, such as remdesivir, infliximab and imatinib. Natural plants have been used as an alternative source of drugs for thousands of years, and some of them are effective for the treatment of various viral diseases. Emodin (1,3,8-trihydroxy-6-methylanthracene-9,10-dione) is a biologically active anthraquinone with antiviral activity that is found in various plants. We studied the selectivity of electrophilic aromatic substitution reactions on an emodin core (halogenation, nitration and sulfonation), which resulted in a library of emodin derivatives. The main aim of this work was to carry out an initial evaluation of the potential to improve the activity of emodin against human coronavirus NL63 (HCoV-NL63) and also to generate a set of initial SAR guidelines. We have prepared emodin derivatives which displayed significant anti-HCoV-NL63 activity. We observed that halogenation of emodin can improve its antiviral activity. The most active compound in this study was the iodinated emodin analogue E_3I, whose anti-HCoV-NL63 activity was comparable to that of remdesivir. Evaluation of the emodin analogues also revealed some unwanted toxicity to Vero cells. Since new synthetic routes are now available that allow modification of the emodin structure, it is reasonable to expect that analogues with significantly improved anti-HCoV-NL63 activity and lowered toxicity may thus be generated.
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Affiliation(s)
- Monika Horvat
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia;
| | - Martina Avbelj
- Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia;
| | - María Beatriz Durán-Alonso
- Unit of Excellence, Institute of Biology and Molecular Genetics (IBGM), University of Valladolid-CSIC, 47003 Valladolid, Spain;
| | - Mihailo Banjanac
- Fidelta d.o.o., Prilaz baruna Filipovića 29, 10000 Zagreb, Croatia;
| | - Hrvoje Petković
- Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia;
| | - Jernej Iskra
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia;
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11
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Ruchawapol C, Yuan M, Wang SM, Fu WW, Xu HX. Natural Products and Their Derivatives against Human Herpesvirus Infection. Molecules 2021; 26:6290. [PMID: 34684870 PMCID: PMC8541008 DOI: 10.3390/molecules26206290] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 10/13/2021] [Accepted: 10/14/2021] [Indexed: 02/06/2023] Open
Abstract
Herpesviruses establish long-term latent infection for the life of the host and are known to cause numerous diseases. The prevalence of viral infection is significantly increased and causes a worldwide challenge in terms of health issues due to drug resistance. Prolonged treatment with conventional antiviral drugs is more likely to develop drug-resistant strains due to mutations of thymidine nucleoside kinase or DNA polymerase. Hence, the development of alternative treatments is clearly required. Natural products and their derivatives have played a significant role in treating herpesvirus infection rather than nucleoside analogs in drug-resistant strains with minimal undesirable effects and different mechanisms of action. Numerous plants, animals, fungi, and bacteria-derived compounds have been proved to be efficient and safe for treating human herpesvirus infection. This review covers the natural antiherpetic agents with the chemical structural class of alkaloids, flavonoids, terpenoids, polyphenols, anthraquinones, anthracyclines, and miscellaneous compounds, and their antiviral mechanisms have been summarized. This review would be helpful to get a better grasp of anti-herpesvirus activity of natural products and their derivatives, and to evaluate the feasibility of natural compounds as an alternative therapy against herpesvirus infections in humans.
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Affiliation(s)
- Chattarin Ruchawapol
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Cai Lun Lu 1200, Shanghai 201203, China; (C.R.); (M.Y.); (S.-M.W.)
- Engineering Research Centre of Shanghai Colleges for TCM New Drug Discovery, Shanghai 201203, China
| | - Man Yuan
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Cai Lun Lu 1200, Shanghai 201203, China; (C.R.); (M.Y.); (S.-M.W.)
- Engineering Research Centre of Shanghai Colleges for TCM New Drug Discovery, Shanghai 201203, China
| | - Si-Min Wang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Cai Lun Lu 1200, Shanghai 201203, China; (C.R.); (M.Y.); (S.-M.W.)
| | - Wen-Wei Fu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Cai Lun Lu 1200, Shanghai 201203, China; (C.R.); (M.Y.); (S.-M.W.)
- Engineering Research Centre of Shanghai Colleges for TCM New Drug Discovery, Shanghai 201203, China
| | - Hong-Xi Xu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Cai Lun Lu 1200, Shanghai 201203, China; (C.R.); (M.Y.); (S.-M.W.)
- Engineering Research Centre of Shanghai Colleges for TCM New Drug Discovery, Shanghai 201203, China
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12
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Semwal RB, Semwal DK, Combrinck S, Viljoen A. Emodin - A natural anthraquinone derivative with diverse pharmacological activities. PHYTOCHEMISTRY 2021; 190:112854. [PMID: 34311280 DOI: 10.1016/j.phytochem.2021.112854] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/19/2021] [Accepted: 06/20/2021] [Indexed: 06/13/2023]
Abstract
Emodin (1,3,8-trihydroxy-6-methyl-anthraquinone) is a natural anthraquinone derivative that is present in numerous globally renowned herbal medicines. It is recognised as a protein tyrosine kinase inhibitor and as an anticancer drug, active against various tumour cells, including lung, breast, liver, and ovarian cancer cells. Recently, its role in combination chemotherapy with various allopathic medicines, to minimize their toxicity and to enhance their efficacy, has been studied. The use of emodin in these therapies is gaining popularity, due to fewer associated side effects compared with standard anticancer drugs. Emodin has a broad therapeutic window, and in addition to its antineoplastic activity, it displays anti-ulcer, anti-inflammatory, hepatoprotective, neuroprotective, antimicrobial, muscle relaxant, immunosuppressive and antifibrotic activities, in both in vitro and in vivo models. Although reviews on the anticancer activity of emodin have been published, none coherently unite all the pharmacological properties of emodin, particularly the anti-oxidant, antimicrobial, antidiabetic, immunosuppressive and hepatoprotective activities of the compound. Hence, in this review, all of the available data regarding the pharmacological properties of emodin are explored, with particular emphasis on the modes of action of the molecule. In addition, the manuscript details the occurrence, biosynthesis and chemical synthesis of the compound, as well as its toxic effects on biotic systems.
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Affiliation(s)
- Ruchi Badoni Semwal
- Department of Pharmaceutical Sciences, Faculty of Science, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa; Department of Chemistry, Pt. Lalit Mohan Sharma Govt. Post Graduate College, Rishikesh, 249201, India
| | - Deepak Kumar Semwal
- Department of Pharmaceutical Sciences, Faculty of Science, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa; Department of Phytochemistry, Faculty of Biomedical Sciences, Uttarakhand Ayurved University, Harrawala, Dehradun, 248001, India
| | - Sandra Combrinck
- Department of Pharmaceutical Sciences, Faculty of Science, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa
| | - Alvaro Viljoen
- Department of Pharmaceutical Sciences, Faculty of Science, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa; SAMRC Herbal Drugs Research Unit, Faculty of Science, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa.
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Mugas ML, Marioni J, Martinez F, Aguilar JJ, Cabrera JL, Contigiani MS, Konigheim BS, Núñez-Montoya SC. Inactivation of Herpes Simplex Virus by Photosensitizing Anthraquinones Isolated from Heterophyllaea pustulata. PLANTA MEDICA 2021; 87:716-723. [PMID: 33622002 DOI: 10.1055/a-1345-6831] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Heterophyllaea pustulata is a phototoxic plant from Argentina. Aerial parts extracts, high in photosensitizing anthraquinones, have shown in vitro antiviral activity. The purpose of this study was to study the antiherpetic activity of the main purified anthraquinones, even evaluating their competence as photodynamic sensitizers to photo-stimulate the antiviral effect. In vitro antiviral activity against Herpes Simplex virus type I and the photo-inactivation of viral particle were studied by the Neutral Red uptake test and observation of the cytopathic effect. Rubiadin 1-methyl ether and 5,5'-bisoranjidiol produced a significant effect (≥ 80% inhibition) with minimal damage to host cells (subtoxic concentration). Anthraquinones with poor antiherpetic activity at its maximum noncytotoxic concentration showed an important photo-stimulated effect, such is the case of soranjidiol and 5,5'-bisoranjidiol (28.0 ± 6.3 vs. 81.8 ± 2.1% and 15.5 ± 0.3 vs. 89.8 ± 1.7%, respectively). The study also proved the decrease of viral particles, necessary to reduce infection. Therefore, photosensitizing anthraquinones from natural resources could be proposed to develop new treatments for localized viral lesions with antimicrobial photodynamic therapy.
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Affiliation(s)
- M Laura Mugas
- Universidad Nacional de Córdoba, Facultad de Ciencias Químicas, Departamento de Ciencias Farmacéuticas, Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto Multidisciplinario de Biología Vegetal (IMBIV), Córdoba, Argentina
| | - Juliana Marioni
- Universidad Nacional de Córdoba, Facultad de Ciencias Químicas, Departamento de Ciencias Farmacéuticas, Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto Multidisciplinario de Biología Vegetal (IMBIV), Córdoba, Argentina
| | - Florencia Martinez
- Universidad Nacional de Córdoba, Facultad de Ciencias Médicas, Instituto de Virología "Dr. J. M. Vanella", Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| | - Juan J Aguilar
- Universidad Nacional de Córdoba, Facultad de Ciencias Médicas, Instituto de Virología "Dr. J. M. Vanella", Córdoba, Argentina
| | - José L Cabrera
- Universidad Nacional de Córdoba, Facultad de Ciencias Químicas, Departamento de Ciencias Farmacéuticas, Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto Multidisciplinario de Biología Vegetal (IMBIV), Córdoba, Argentina
| | - Marta S Contigiani
- Universidad Nacional de Córdoba, Facultad de Ciencias Médicas, Instituto de Virología "Dr. J. M. Vanella", Córdoba, Argentina
| | - Brenda S Konigheim
- Universidad Nacional de Córdoba, Facultad de Ciencias Médicas, Instituto de Virología "Dr. J. M. Vanella", Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| | - Susana C Núñez-Montoya
- Universidad Nacional de Córdoba, Facultad de Ciencias Químicas, Departamento de Ciencias Farmacéuticas, Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto Multidisciplinario de Biología Vegetal (IMBIV), Córdoba, Argentina
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Wang Z, Zheng N, Liang J, Wang Q, Zu X, Wang H, Yuan H, Zhang R, Guo S, Liu Y, Zhou J. Emodin resists to Cyprinid herpesvirus 3 replication via the pathways of Nrf2/Keap1-ARE and NF-κB in the ornamental koi carp (Cyprinus carpio haematopterus). Comp Biochem Physiol C Toxicol Pharmacol 2021; 246:109023. [PMID: 33647480 DOI: 10.1016/j.cbpc.2021.109023] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 02/14/2021] [Accepted: 02/16/2021] [Indexed: 12/14/2022]
Abstract
Cyprinid herpesvirus 3 (CyHV-3) causes high mortality in carp. Emodin has been shown of the effects of antioxidant, anti-inflammatory and antiviral. In present study, we investigated the preventive effects and mechanism of emodin on CyHV-3 infection. The ornamental koi carp (Cyprinus carpio haematopterus) were intraperitoneally injected with emodin (10 mg/kg, 20 mg/kg, or 40 mg/kg). 72 h later, an intraperitoneal injection of CyHV-3 was administered, and collected the samples one week later to detect the antioxidant parameters, antioxidant genes, inflammatory genes and to perform histopathology assays. The results showed that emodin significantly suppressed CyHV-3 replication (P < 0.05), improved the koi survival rate and slowed the damage caused by CyHV-3. Emodin treatment increased the antioxidant activity and decreased the lipid peroxidation level of the koi. Compared to the CyHV-3 group, emodin treatment resulted in the same antioxidant parameters after CyHV-3 infection. Emodin treatment activated the Nuclear factorery throid 2-related factor 2/Kelch-like ECH-associated protein 1-antioxidatant response element (Nrf2/Keap1-ARE) pathway and upregulated the expression of heme oxygenase 1 (HO-1), superoxide dismutase (SOD), and catalase (CAT) in the hepatopancreas after CyHV-3 infection. Emodin activated the nuclear factor kappa-B (NF-κB) pathway and decreased the expression of interleukin-6 (IL-6), interleukin-8 (IL-8), and tumour necrosis factor-α (TNF-α) in the koi induced by CyHV-3. In conclusion, emodin treatment can suppress CyHV-3 replication and reduce the mortality of koi caused by CyHV-3. Emodin improves antioxidant function, relieves oxidative stress and inflammation cytokines via Nrf2/Keap1-ARE and NF-κB pathways, and protects against the adverse effects induced by CyHV-3.
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Affiliation(s)
- Zhuoyu Wang
- College of Life Sciences, Jilin Agricultural University, Changchun, Jilin 130118, China
| | - Nan Zheng
- College of Animal Sciences, Jilin Agricultural University, Changchun, Jilin 130118, China
| | - Jie Liang
- College of Animal Sciences, Jilin Agricultural University, Changchun, Jilin 130118, China
| | - Qiuju Wang
- College of Animal Sciences, Jilin Agricultural University, Changchun, Jilin 130118, China
| | - Xiujie Zu
- Jilin Academy of Fishery Sciences, Changchun, Jilin 130033, China
| | - Hao Wang
- College of Animal Sciences, Jilin Agricultural University, Changchun, Jilin 130118, China
| | - Haiyan Yuan
- Jilin Province Fishery Technology Extension Station, Jilin 130012, China
| | - Ruixue Zhang
- Jilin Province Fishery Technology Extension Station, Jilin 130012, China
| | - Shanshan Guo
- College of Animal Sciences, Jilin Agricultural University, Changchun, Jilin 130118, China
| | - Yanhui Liu
- Jilin Academy of Fishery Sciences, Changchun, Jilin 130033, China
| | - Jingxiang Zhou
- College of Animal Sciences, Jilin Agricultural University, Changchun, Jilin 130118, China.
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Yao R, Ianevski A, Kainov D. Safe-in-Man Broad Spectrum Antiviral Agents. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1322:313-337. [PMID: 34258746 DOI: 10.1007/978-981-16-0267-2_12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Emerging and re-emerging viral diseases occur with regularity within the human population. The conventional 'one drug, one virus' paradigm for antivirals does not adequately allow for proper preparedness in the face of unknown future epidemics. In addition, drug developers lack the financial incentives to work on antiviral drug discovery, with most pharmaceutical companies choosing to focus on more profitable disease areas. Safe-in-man broad spectrum antiviral agents (BSAAs) can help meet the need for antiviral development by already having passed phase I clinical trials, requiring less time and money to develop, and having the capacity to work against many viruses, allowing for a speedy response when unforeseen epidemics arise. In this chapter, we discuss the benefits of repurposing existing drugs as BSAAs, describe the major steps in safe-in-man BSAA drug development from discovery through clinical trials, and list several database resources that are useful tools for antiviral drug repositioning.
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Affiliation(s)
- Rouan Yao
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Aleksandr Ianevski
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Denis Kainov
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.
- Institute of Technology, University of Tartu, Tartu, Estonia.
- Institute for Molecule Medicine Finland, FIMM, University of Helsinki, Helsinki, Finland.
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16
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Xu Z, Huang M, Xia Y, Peng P, Zhang Y, Zheng S, Wang X, Xue C, Cao Y. Emodin from Aloe Inhibits Porcine Reproductive and Respiratory Syndrome Virus via Toll-Like Receptor 3 Activation. Viruses 2021; 13:v13071243. [PMID: 34206896 PMCID: PMC8310261 DOI: 10.3390/v13071243] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 06/15/2021] [Accepted: 06/15/2021] [Indexed: 12/11/2022] Open
Abstract
Porcine reproductive and respiratory syndrome virus (PRRSV) causes severe reproductive failure in sows and respiratory diseases in growing and finishing pigs and results in great economic losses to the swine industry. Although vaccines are available, PRRSV remains a major threat to the pig farms. Thus, there is an urgent need to develop antiviral drugs to compensate for vaccines. In this study, we report that Aloe extract (Ae) can strongly inhibit PRRSV in Marc-145 cells and porcine alveolar macrophages lines (iPAMs) in vitro. Furthermore, we identified a novel anti-PRRSV molecule, Emodin, from Ae by high-performance liquid chromatography (HPLC). Emodin exerted its inhibitory effect through targeting the whole stages of PRRSV infectious cycle. Moreover, we also found that Emodin can inactivate PRRSV particles directly. Notably, we confirmed that Emodin was able to significantly induce Toll-like receptor 3 (TLR3) (p < 0.01), IFN-α (p < 0.05) and IFN-β expression in iPAMs, indicating that induction of antiviral agents via TLR3 activation by Emodin might contribute to its anti-PRRSV effect. These findings imply that the Emodin from Aloe could hamper the proliferation of PRRSV in vitro and might constitute a new approach for treating PRRSV infection.
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Affiliation(s)
- Zhichao Xu
- State Key Laboratory of Biocontrol, School of Life Science, Sun Yat-sen University, Guangzhou 510006, China; (Z.X.); (M.H.); (Y.X.); (P.P.); (Y.Z.); (S.Z.); (X.W.); (C.X.)
| | - Meiyan Huang
- State Key Laboratory of Biocontrol, School of Life Science, Sun Yat-sen University, Guangzhou 510006, China; (Z.X.); (M.H.); (Y.X.); (P.P.); (Y.Z.); (S.Z.); (X.W.); (C.X.)
| | - Yongbo Xia
- State Key Laboratory of Biocontrol, School of Life Science, Sun Yat-sen University, Guangzhou 510006, China; (Z.X.); (M.H.); (Y.X.); (P.P.); (Y.Z.); (S.Z.); (X.W.); (C.X.)
| | - Peng Peng
- State Key Laboratory of Biocontrol, School of Life Science, Sun Yat-sen University, Guangzhou 510006, China; (Z.X.); (M.H.); (Y.X.); (P.P.); (Y.Z.); (S.Z.); (X.W.); (C.X.)
| | - Yun Zhang
- State Key Laboratory of Biocontrol, School of Life Science, Sun Yat-sen University, Guangzhou 510006, China; (Z.X.); (M.H.); (Y.X.); (P.P.); (Y.Z.); (S.Z.); (X.W.); (C.X.)
| | - Shumei Zheng
- State Key Laboratory of Biocontrol, School of Life Science, Sun Yat-sen University, Guangzhou 510006, China; (Z.X.); (M.H.); (Y.X.); (P.P.); (Y.Z.); (S.Z.); (X.W.); (C.X.)
| | - Xiaowei Wang
- State Key Laboratory of Biocontrol, School of Life Science, Sun Yat-sen University, Guangzhou 510006, China; (Z.X.); (M.H.); (Y.X.); (P.P.); (Y.Z.); (S.Z.); (X.W.); (C.X.)
| | - Chunyi Xue
- State Key Laboratory of Biocontrol, School of Life Science, Sun Yat-sen University, Guangzhou 510006, China; (Z.X.); (M.H.); (Y.X.); (P.P.); (Y.Z.); (S.Z.); (X.W.); (C.X.)
| | - Yongchang Cao
- State Key Laboratory of Biocontrol, School of Life Science, Sun Yat-sen University, Guangzhou 510006, China; (Z.X.); (M.H.); (Y.X.); (P.P.); (Y.Z.); (S.Z.); (X.W.); (C.X.)
- School of Life Science, Sun Yat-sen University, Higher Education Mega Center, Guangzhou 510006, China
- Correspondence: ; Tel.: +86-(20)-3933-2938; Fax: +86-(20)-3933-2841
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Harikrishnan R, Devi G, Balasundaram C, Van Doan H, Jaturasitha S, Ringø E, Faggio C. Effect of chrysophanic acid on immune response and immune genes transcriptomic profile in Catla catla against Aeromonas hydrophila. Sci Rep 2021; 11:612. [PMID: 33436677 PMCID: PMC7804155 DOI: 10.1038/s41598-020-79629-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Accepted: 12/07/2020] [Indexed: 01/29/2023] Open
Abstract
The effect of chrysophanic acid (CA) (2, 4, and 8 mg kg-1) on the immunity and immune-related gene profile of Catla catla against Aeromonas hydrophila is reported. In both control and treated groups fed with 2 mg kg-1 (2 CA), the phagocytosis, hemolytic, myeloperoxidase content, and superoxide anion production decreased significantly between 6th and 8th weeks, whereas when fed with 4 mg kg-1 CA (4 CA) the H2O2 production and nitric oxide synthase increased significantly between 4th and 8th week. When fed with 2 CA and 4 CA diets, the total protein, bactericidal, and antibody titer increased significantly from the 4th week onwards. When fed with 2 CA, the IL-1β and IL-10 mRNA expression of head kidney leucocytes were significant between weeks 6 and 8. The expressions of toll-like receptors significantly increased when fed with a 4 CA diet from 4th week onwards. The 4 CA group significantly increased in TNF-α, TNF receptor-associated factor 6 (NOD), which influences protein expression, after the 4th week. The mRNA transcription of MHCI, lysozyme-chicken and goose type expressions significantly increased in 4 CA group within the 4th week. In summary, the dietary administration of 4 mg kg-1 of CA (4 CA) provides better immunity and enhances the up-regulation of immune-related genes in Catla against A. hydrophila.
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Affiliation(s)
- Ramasamy Harikrishnan
- grid.413015.20000 0004 0505 215XDepartment of Zoology, Pachaiyappa’s College for Men, Kanchipuram, Tamil Nadu 631 501 India
| | - Gunapathy Devi
- grid.411678.d0000 0001 0941 7660Department of Zoology, Nehru Memorial College, Puthanampatti, Tamil Nadu 621 007 India
| | - Chellam Balasundaram
- grid.412909.70000 0001 2287 9472Department of Herbal and Environmental Science, Tamil University, Thanjavur, Tamil Nadu 613 005 India
| | - Hien Van Doan
- grid.7132.70000 0000 9039 7662Department of Animal and Aquatic Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai, 50200 Thailand ,grid.7132.70000 0000 9039 7662Science and Technology Research Institute, Chiang Mai University, 239 Huay Keaw Rd., Suthep, Muang, Chiang Mai, 50200 Thailand
| | - Sanchai Jaturasitha
- grid.7132.70000 0000 9039 7662Department of Animal and Aquatic Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai, 50200 Thailand ,grid.7132.70000 0000 9039 7662Science and Technology Research Institute, Chiang Mai University, 239 Huay Keaw Rd., Suthep, Muang, Chiang Mai, 50200 Thailand
| | - Einar Ringø
- grid.10919.300000000122595234Norwegian College of Fishery Science, Faculty of Bioscience, Fisheries and Economics, UiT The Arctic University of Norway, Tromsø, Norway
| | - Caterina Faggio
- grid.10438.3e0000 0001 2178 8421Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Piazza Pugliatti, Italy
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Phytocompounds of Rheum emodi, Thymus serpyllum, and Artemisia annua Inhibit Spike Protein of SARS-CoV-2 Binding to ACE2 Receptor: In Silico Approach. CURRENT PHARMACOLOGY REPORTS 2021; 7:135-149. [PMID: 34306988 PMCID: PMC8279807 DOI: 10.1007/s40495-021-00259-4] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Accepted: 05/24/2021] [Indexed: 02/07/2023]
Abstract
COVID-19, the disease caused by SARS-CoV-2, has been declared as a global pandemic. Traditional medicinal plants have long history to treat viral infections. Our in silico approach suggested that unique phytocompounds such as emodin, thymol and carvacrol, and artemisinin could physically bind SARS-CoV-2 spike glycoproteins (6VXX and 6VYB), SARS-CoV-2 B.1.351 South Africa variant of Spike glycoprotein (7NXA), and even with ACE2 and prevent the SARS-CoV-2 binding to the host ACE2, TMPRSS2 and neutrapilin-1 receptors. Since Chloroquine has been looked as potential therapy against COVID-19, we also compared the binding of chloroquine and artemisinin for its interaction with spike proteins (6VXX, 6VYB) and its variant 7NXA, respectively. Molecular docking study of phytocompounds and SARS-CoV-2 spike protein was performed by using AutoDock/Vina software. Molecular dynamics (MD) simulation was performed for 50ns. Among all the phytocompounds, molecular docking studies revealed lowest binding energy of artemisinin with 6VXX and 6VYB, with Etotal -10.5 KJ mol-1 and -10.3 KJ mol-1 respectively. Emodin showed the best binding affinity with 6VYB with Etotal -8.8 KJ mol-1and SARS-CoV-2 B.1.351 variant (7NXA) with binding energy of -6.4KJ mol-1. Emodin showed best interactions with TMPRSS 2 and ACE2 with Etotal of -7.1 and -7.3 KJ mol-1 respectively, whereas artemisinin interacts with TMPRSS 2 and ACE2 with Etotal of -6.9 and -7.4 KJ mol-1 respectively. All the phytocompounds were non-toxic and non-carcinogenic. MD simulation showed that artemisinin has more stable interaction with 6VYB as compared to 6VXX, and hence proposed as potential phytochemical to prevent SARS-CoV-2 interaction with ACE-2 receptor. GRAPHICAL ABSTRACT SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s40495-021-00259-4.
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Rolta R, Salaria D, Sharma P, Sharma B, Kumar V, Rathi B, Verma M, Sourirajan A, Baumler DJ, Dev K. Phytocompounds of Rheum emodi, Thymus serpyllum, and Artemisia annua Inhibit Spike Protein of SARS-CoV-2 Binding to ACE2 Receptor: In Silico Approach. CURRENT PHARMACOLOGY REPORTS 2021; 7:135-149. [PMID: 34306988 DOI: 10.21203/rs.3.rs-30938/v1] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 05/24/2021] [Indexed: 05/21/2023]
Abstract
UNLABELLED COVID-19, the disease caused by SARS-CoV-2, has been declared as a global pandemic. Traditional medicinal plants have long history to treat viral infections. Our in silico approach suggested that unique phytocompounds such as emodin, thymol and carvacrol, and artemisinin could physically bind SARS-CoV-2 spike glycoproteins (6VXX and 6VYB), SARS-CoV-2 B.1.351 South Africa variant of Spike glycoprotein (7NXA), and even with ACE2 and prevent the SARS-CoV-2 binding to the host ACE2, TMPRSS2 and neutrapilin-1 receptors. Since Chloroquine has been looked as potential therapy against COVID-19, we also compared the binding of chloroquine and artemisinin for its interaction with spike proteins (6VXX, 6VYB) and its variant 7NXA, respectively. Molecular docking study of phytocompounds and SARS-CoV-2 spike protein was performed by using AutoDock/Vina software. Molecular dynamics (MD) simulation was performed for 50ns. Among all the phytocompounds, molecular docking studies revealed lowest binding energy of artemisinin with 6VXX and 6VYB, with Etotal -10.5 KJ mol-1 and -10.3 KJ mol-1 respectively. Emodin showed the best binding affinity with 6VYB with Etotal -8.8 KJ mol-1and SARS-CoV-2 B.1.351 variant (7NXA) with binding energy of -6.4KJ mol-1. Emodin showed best interactions with TMPRSS 2 and ACE2 with Etotal of -7.1 and -7.3 KJ mol-1 respectively, whereas artemisinin interacts with TMPRSS 2 and ACE2 with Etotal of -6.9 and -7.4 KJ mol-1 respectively. All the phytocompounds were non-toxic and non-carcinogenic. MD simulation showed that artemisinin has more stable interaction with 6VYB as compared to 6VXX, and hence proposed as potential phytochemical to prevent SARS-CoV-2 interaction with ACE-2 receptor. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s40495-021-00259-4.
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Affiliation(s)
- Rajan Rolta
- Faculty of Applied Sciences and Biotechnology, Shoolini University, Pin, Solan, Himachal Pradesh 173212 India
| | - Deeksha Salaria
- Faculty of Applied Sciences and Biotechnology, Shoolini University, Pin, Solan, Himachal Pradesh 173212 India
| | - PremPrakash Sharma
- Laboratory for Translational Chemistry and Drug Discovery, Hansraj College University of Delhi, Delhi, 110007 India
| | - Bhanu Sharma
- Faculty of Applied Sciences and Biotechnology, Shoolini University, Pin, Solan, Himachal Pradesh 173212 India
| | - Vikas Kumar
- Faculty of Applied Sciences and Biotechnology, Shoolini University, Pin, Solan, Himachal Pradesh 173212 India
| | - Brijesh Rathi
- Laboratory for Translational Chemistry and Drug Discovery, Hansraj College University of Delhi, Delhi, 110007 India
| | - Mansi Verma
- Sri Venkateswara College, University of Delhi, New Delhi, 110021 India
| | - Anuradha Sourirajan
- Faculty of Applied Sciences and Biotechnology, Shoolini University, Pin, Solan, Himachal Pradesh 173212 India
| | - David J Baumler
- Department of Food Science and Nutrition, University of Minnesota, St. Paul, MN USA
| | - Kamal Dev
- Faculty of Applied Sciences and Biotechnology, Shoolini University, Pin, Solan, Himachal Pradesh 173212 India
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20
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Musarra-Pizzo M, Pennisi R, Ben-Amor I, Smeriglio A, Mandalari G, Sciortino MT. In Vitro Anti-HSV-1 Activity of Polyphenol-Rich Extracts and Pure Polyphenol Compounds Derived from Pistachios Kernels ( Pistacia vera L.). PLANTS 2020; 9:plants9020267. [PMID: 32085514 PMCID: PMC7076519 DOI: 10.3390/plants9020267] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 02/14/2020] [Accepted: 02/15/2020] [Indexed: 12/19/2022]
Abstract
Natural compounds are a prominent source of novel antiviral drugs. Several reports have previously shown the antimicrobial activity of pistachio polyphenol extracts. Therefore, the aim of our research was to investigate the activity of polyphenol-rich extracts of natural shelled (NPRE) pistachios kernels (Pistacia vera L.) on herpes simplex virus type 1 (HSV-1) replication. The Vero cell line was used to assess the cytotoxicity and antiviral activity. The cell viability was calculated by detection of cellular ATP after treatment with various concentrations of NPRE. For antiviral studies, five nontoxic-concentrations (0.1, 0.2, 0.4, 0.6, 0.8 mg/mL) were tested. Our study demonstrated that treatment with NPRE (0.4, 0.6, 0.8 mg/mL) reduced the expression of the viral proteins ICP8 (infected cell polypeptide 8), UL42 (unique long UL42 DNA polymerase processivity factor), and US11 (unique short US11 protein), and resulted in a decrease of viral DNA synthesis. The 50% cytotoxic concentration (CC50), 50% inhibitory concentration (EC50), and the selectivity index (SI) values for NPRE were 1.2 mg/mL, 0.4mg/mL, and 3, respectively. Furthermore, we assessed the anti-herpetic effect of a mix of pure polyphenol compounds (NS MIX) present in NPRE. In conclusion, our findings indicate that natural shelled pistachio kernels have remarkable inhibitory activity against HSV-1.
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Affiliation(s)
- Maria Musarra-Pizzo
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale SS. Annunziata, 98168 Messina, Italy; (M.M.-P.); (R.P.); (I.B.-A.); (A.S.); (G.M.)
| | - Rosamaria Pennisi
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale SS. Annunziata, 98168 Messina, Italy; (M.M.-P.); (R.P.); (I.B.-A.); (A.S.); (G.M.)
- Shenzhen International Institute for Biomedical Research, 140 Jinye Ave. Building A10, Dapeng New District, Shenzhen 518116, China
| | - Ichrak Ben-Amor
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale SS. Annunziata, 98168 Messina, Italy; (M.M.-P.); (R.P.); (I.B.-A.); (A.S.); (G.M.)
- Unit of Biotechnology and Pathologies, Higher Institute of Biotechnology of Sfax, University of Sfax, Sfax 3029, Tunisia
| | - Antonella Smeriglio
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale SS. Annunziata, 98168 Messina, Italy; (M.M.-P.); (R.P.); (I.B.-A.); (A.S.); (G.M.)
| | - Giuseppina Mandalari
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale SS. Annunziata, 98168 Messina, Italy; (M.M.-P.); (R.P.); (I.B.-A.); (A.S.); (G.M.)
| | - Maria Teresa Sciortino
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale SS. Annunziata, 98168 Messina, Italy; (M.M.-P.); (R.P.); (I.B.-A.); (A.S.); (G.M.)
- Correspondence: ; Tel.: +39-090-676-5217
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21
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Wu CC, Chen MS, Cheng YJ, Ko YC, Lin SF, Chiu IM, Chen JY. Emodin Inhibits EBV Reactivation and Represses NPC Tumorigenesis. Cancers (Basel) 2019; 11:cancers11111795. [PMID: 31731581 PMCID: PMC6896023 DOI: 10.3390/cancers11111795] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 10/28/2019] [Accepted: 11/06/2019] [Indexed: 02/07/2023] Open
Abstract
Nasopharyngeal carcinoma (NPC) is a unique malignancy derived from the epithelium of the nasopharynx. Despite great advances in the development of radiotherapy and chemotherapy, relapse and metastasis in NPC patients remain major causes of mortality. Evidence accumulated over recent years indicates that Epstein-Barr virus (EBV) lytic replication plays an important role in the pathogenesis of NPC and inhibition of EBV reactivation is now being considered as a goal for the therapy of EBV-associated cancers. With this in mind, a panel of dietary compounds was screened and emodin was found to have potential anti-EBV activity. Through Western blotting, immunofluorescence, and flow cytometric analysis, we show that emodin inhibits the expression of EBV lytic proteins and blocks virion production in EBV- positive epithelial cell lines. In investigating the underlying mechanism, reporter assays indicated that emodin represses Zta promoter (Zp) and Rta promoter (Rp) activities, triggered by various inducers. Mapping of the Zp construct reveals that the SP1 binding region is important for emodin-triggered repression and emodin is shown to be able to inhibit SP1 expression, suggesting that it likely inhibits EBV reactivation by suppression of SP1 expression. Moreover, we also show that emodin inhibits the tumorigenic properties induced by repeated EBV reactivation, including micronucleus formation, cell proliferation, migration, and matrigel invasiveness. Emodin administration also represses the tumor growth in mice which is induced by EBV activation. Taken together, our results provide a potential chemopreventive agent in restricting EBV reactivation and NPC recurrence.
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Affiliation(s)
- Chung-Chun Wu
- National Institute of Cancer Research, National Health Research Institutes, No. 35, Keyan Road, Zhunan Town 350, Taiwan
- Institute of Cellular and System Medicine, National Health Research Institutes, Zhunan Town 350, Taiwan
- Correspondence: (C.-C.W.); (J.-Y.C.); Tel.: +886-37-206166 (ext. 31718) (C.-C.W.); +886-37-206166 (ext. 35123) (J.-Y.C.)
| | - Mei-Shu Chen
- Institute of Cellular and System Medicine, National Health Research Institutes, Zhunan Town 350, Taiwan
| | - Yu-Jhen Cheng
- National Institute of Cancer Research, National Health Research Institutes, No. 35, Keyan Road, Zhunan Town 350, Taiwan
| | - Ying-Chieh Ko
- National Institute of Cancer Research, National Health Research Institutes, No. 35, Keyan Road, Zhunan Town 350, Taiwan
| | - Su-Fang Lin
- National Institute of Cancer Research, National Health Research Institutes, No. 35, Keyan Road, Zhunan Town 350, Taiwan
| | - Ing-Ming Chiu
- Institute of Cellular and System Medicine, National Health Research Institutes, Zhunan Town 350, Taiwan
| | - Jen-Yang Chen
- National Institute of Cancer Research, National Health Research Institutes, No. 35, Keyan Road, Zhunan Town 350, Taiwan
- Department of Microbiology, College of Medicine, National Taiwan University, Taipei 100, Taiwan
- Correspondence: (C.-C.W.); (J.-Y.C.); Tel.: +886-37-206166 (ext. 31718) (C.-C.W.); +886-37-206166 (ext. 35123) (J.-Y.C.)
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22
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Reza Nazifi SM, Asgharshamsi MH, Dehkordi MM, Zborowski KK. Antioxidant properties of Aloe vera components: a DFT theoretical evaluation. Free Radic Res 2019; 53:922-931. [PMID: 31357895 DOI: 10.1080/10715762.2019.1648798] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Prediction of the antioxidant activity of three Aloe vera components (aloesone, aloe-emodin, and isoeleutheol) was performed based on density functional theory calculations using the B3LYP hybrid functional and the 6-311++ G** basis set. Calculation of highest occupied molecular orbital (HOMO), lowest occupied molecular orbital (LUMO), and Egap revealed that aloe-emodin has the lowest Egap value, indicating good antioxidant activity. Also in terms of electron affinity, softness, electrophilicity, and chemical potential, aloe-emodin is a potent structure with potential high radical scavenging activity. Calculation of the ionisation potential revealed that isoeleutherol likely also possesses a high degree of antiradical scavenging. To study the conjugating system of the radicals, density plots of HOMO, natural bond orbital analyses, and spin density plots were used. According to calculations, the isoeleutherol radical is more delocalised and the most stable radical. Calculated proton affinity values revealed that the most probable antioxidant mechanism is sequential proton loss-electron transfer. Our results were compared with available experimental data. Published experimental data were found to correlate well with our theoretical predictions. These results support the usefulness of theoretical calculations not only for identifying potentially useful structures of studied compounds but also for predicting their relative activity.
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Affiliation(s)
- S Mohamad Reza Nazifi
- Department of Medicinal Chemistry, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences , Isfahan , Iran
| | - Mohammad H Asgharshamsi
- Department of Medicinal Chemistry, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences , Isfahan , Iran
| | - Mehrdad M Dehkordi
- Department of Medicinal Chemistry, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences , Isfahan , Iran
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23
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Roa-Linares VC, Miranda-Brand Y, Tangarife-Castaño V, Ochoa R, García PA, Castro MÁ, Betancur-Galvis L, San Feliciano A. Anti-Herpetic, Anti-Dengue and Antineoplastic Activities of Simple and Heterocycle-Fused Derivatives of Terpenyl-1,4-Naphthoquinone and 1,4-Anthraquinone. Molecules 2019; 24:molecules24071279. [PMID: 30986933 PMCID: PMC6479402 DOI: 10.3390/molecules24071279] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 03/28/2019] [Accepted: 03/29/2019] [Indexed: 12/15/2022] Open
Abstract
Quinones are secondary metabolites of higher plants associated with many biological activities, including antiviral effects and cytotoxicity. In this study, the anti-herpetic and anti-dengue evaluation of 27 terpenyl-1,4-naphthoquinone (NQ), 1,4-anthraquinone (AQ) and heterocycle-fused quinone (HetQ) derivatives was done in vitro against Human Herpesvirus (HHV) type 1 and 2, and Dengue virus serotype 2 (DENV-2). The cytotoxicity on HeLa and Jurkat tumor cell lines was also tested. Using plaque forming unit assays, cell viability assays and molecular docking, we found that NQ 4 was the best antiviral compound, while AQ 11 was the most active and selective molecule on the tested tumor cells. NQ 4 showed a fair antiviral activity against Herpesviruses (EC50: <0.4 µg/mL, <1.28 µM) and DENV-2 (1.6 µg/mL, 5.1 µM) on pre-infective stages. Additionally, NQ 4 disrupted the viral attachment of HHV-1 to Vero cells (EC50: 0.12 µg/mL, 0.38 µM) with a very high selectivity index (SI = 1728). The in silico analysis predicted that this quinone could bind to the prefusion form of the E glycoprotein of DENV-2. These findings demonstrate that NQ 4 is a potent and highly selective antiviral compound, while suggesting its ability to prevent Herpes and Dengue infections. Additionally, AQ 11 can be considered of interest as a leader for the design of new anticancer agents.
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Affiliation(s)
- Vicky C Roa-Linares
- Group of Investigative Dermatology, Institute of Medical Research, Faculty of Medicine, University of Antioquia, Medellin 050010, Colombia.
| | - Yaneth Miranda-Brand
- Group of Investigative Dermatology, Institute of Medical Research, Faculty of Medicine, University of Antioquia, Medellin 050010, Colombia.
| | - Verónica Tangarife-Castaño
- Group of Investigative Dermatology, Institute of Medical Research, Faculty of Medicine, University of Antioquia, Medellin 050010, Colombia.
| | - Rodrigo Ochoa
- Programa de Estudio y Control de Enfermedades Tropicales PECET, Facultad de Medicina, University of Antioquia, Medellín 050010, Colombia.
| | - Pablo A García
- Departamento de Ciencias Farmacéuticas, Área de Química Farmacéutica, Facultad de Farmacia, CIETUS, IBSAL. Campus Miguel de Unamuno, University of Salamanca, 37007-Salamanca, Spain.
| | - Mª Ángeles Castro
- Departamento de Ciencias Farmacéuticas, Área de Química Farmacéutica, Facultad de Farmacia, CIETUS, IBSAL. Campus Miguel de Unamuno, University of Salamanca, 37007-Salamanca, Spain.
| | - Liliana Betancur-Galvis
- Group of Investigative Dermatology, Institute of Medical Research, Faculty of Medicine, University of Antioquia, Medellin 050010, Colombia.
| | - Arturo San Feliciano
- Departamento de Ciencias Farmacéuticas, Área de Química Farmacéutica, Facultad de Farmacia, CIETUS, IBSAL. Campus Miguel de Unamuno, University of Salamanca, 37007-Salamanca, Spain.
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24
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Nafuka SN, Misihairabgwi JM, Bock R, Ishola A, Sulyok M, Krska R. Variation of Fungal Metabolites in Sorghum Malts Used to Prepare Namibian Traditional Fermented Beverages Omalodu and Otombo. Toxins (Basel) 2019; 11:toxins11030165. [PMID: 30884826 PMCID: PMC6468557 DOI: 10.3390/toxins11030165] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Revised: 02/09/2019] [Accepted: 03/12/2019] [Indexed: 11/25/2022] Open
Abstract
Sorghum malts, which are important ingredients in traditional fermented beverages, are commonly infected by mycotoxigenic fungi and mycotoxins may transfer into the beverages, risking consumers’ health. Liquid chromatography–tandem mass spectrometry was used to determine variation of fungal metabolites in 81 sorghum malts processed for brewing of Namibian beverages, otombo (n = 45) and omalodu (n = 36). Co-occurrence of European Union (EU)-regulated mycotoxins, such as patulin, aflatoxins (B1, B2, and G2), and fumonisins (B1, B2, and B3) was detected in both malts with a prevalence range of 2–84%. Aflatoxin B1 was quantified in omalodu (44%) and otombo malts (14%), with 20% of omalodu malts and 40% of otombo malts having levels above the EU allowable limit. Fumonisin B1 was quantified in both omalodu (84%) and otombo (42%) malts. Emerging mycotoxins, aflatoxin precursors, and ergot alkaloids were quantified in both malts. Notably, 102 metabolites were quantified in both malts, with 96% in omalodu malts and 93% in otombo malts. An average of 48 metabolites were quantified in otombo malts while an average of 67 metabolites were quantified in omalodu malts. The study accentuates the need to monitor mycotoxins in sorghum malts intended for brewing and to determine their fate in the beverages.
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Affiliation(s)
- Sylvia N Nafuka
- Department of Biological Sciences, Faculty of Science, University of Namibia, Windhoek 10005, Namibia.
| | - Jane M Misihairabgwi
- Department of Biochemistry and Microbiology, School of Medicine, University of Namibia, Windhoek 10005, Namibia.
| | - Ronnie Bock
- Department of Biological Sciences, Faculty of Science, University of Namibia, Windhoek 10005, Namibia.
| | - Anthony Ishola
- Department of Pharmaceutical Chemistry and Phytochemistry, School of Pharmacy, University of Namibia, Windhoek 10005, Namibia.
| | - Michael Sulyok
- Center for Analytical Chemistry, Department of Agro Biotechnology (IFA-Tulln), University of Natural Resources and Life Sciences Vienna (BOKU), Konrad Lorenz Str. 20, 3430 Tulln, Austria.
| | - Rudolf Krska
- Center for Analytical Chemistry, Department of Agro Biotechnology (IFA-Tulln), University of Natural Resources and Life Sciences Vienna (BOKU), Konrad Lorenz Str. 20, 3430 Tulln, Austria.
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, University Road, Belfast BT7 1NN, Northern Ireland, UK.
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25
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Natural Products Isolated from Oriental Medicinal Herbs Inactivate Zika Virus. Viruses 2019; 11:v11010049. [PMID: 30641880 PMCID: PMC6356660 DOI: 10.3390/v11010049] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 12/20/2018] [Accepted: 12/27/2018] [Indexed: 02/07/2023] Open
Abstract
Zika virus (ZIKV) has been associated with serious health conditions, and an intense search to discover different ways to prevent and treat ZIKV infection is underway. Berberine and emodin possess several pharmacological properties and have been shown to be particularly effective against the entry and replication of several viruses. We show that emodin and berberine trigger a virucidal effect on ZIKV. When the virus was exposed to 160 µM of berberine, a reduction of 77.6% in the infectivity was observed; when emodin was used (40 µM), this reduction was approximately 83.3%. Dynamic light scattering data showed that both compounds significantly reduce the hydrodynamic radius of virus particle in solution. We report here that berberine and emodin, two natural compounds, have strong virucidal effect in Zika virus.
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26
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Li W, Wang XH, Luo Z, Liu LF, Yan C, Yan CY, Chen GD, Gao H, Duan WJ, Kurihara H, Li YF, He RR. Traditional Chinese Medicine as a Potential Source for HSV-1 Therapy by Acting on Virus or the Susceptibility of Host. Int J Mol Sci 2018; 19:ijms19103266. [PMID: 30347851 PMCID: PMC6213986 DOI: 10.3390/ijms19103266] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 10/11/2018] [Accepted: 10/17/2018] [Indexed: 12/11/2022] Open
Abstract
Herpes simplex virus type 1 (HSV-1) is the most common virus, with an estimated infection rate of 60–95% among the adult population. Once infected, HSV-1 can remain latent in the host for a lifetime and be reactivated in patients with a compromised immune system. Reactivation of latent HSV-1 can also be achieved by other stimuli. Though acyclovir (ACV) is a classic drug for HSV-1 infection, ACV-resistant strains have been found in immune-compromised patients and drug toxicity has also been commonly reported. Therefore, there is an urge to search for new anti-HSV-1 agents. Natural products with potential anti-HSV-1 activity have the advantages of minimal side effects, reduced toxicity, and they exert their effect by various mechanisms. This paper will not only provide a reference for the safe dose of these agents if they are to be used in humans, referring to the interrelated data obtained from in vitro experiments, but also introduce the main pharmacodynamic mechanisms of traditional Chinese medicine (TCM) against HSV-1. Taken together, TCM functions as a potential source for HSV-1 therapy by direct (blocking viral attachment/absorption/penetration/replication) or indirect (reducing the susceptibility to HSV-1 or regulating autophagy) antiviral activities. The potential of these active components in the development of anti-HSV-1 drugs will also be described.
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Affiliation(s)
- Wen Li
- Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, Jinan University, Guangzhou 510632, China.
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, China.
| | - Xiao-Hua Wang
- Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, Jinan University, Guangzhou 510632, China.
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, China.
| | - Zhuo Luo
- Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, Jinan University, Guangzhou 510632, China.
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, China.
| | - Li-Fang Liu
- Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, Jinan University, Guangzhou 510632, China.
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, China.
| | - Chang Yan
- Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, Jinan University, Guangzhou 510632, China.
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, China.
| | - Chang-Yu Yan
- Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, Jinan University, Guangzhou 510632, China.
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, China.
| | - Guo-Dong Chen
- Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, Jinan University, Guangzhou 510632, China.
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, China.
| | - Hao Gao
- Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, Jinan University, Guangzhou 510632, China.
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, China.
| | - Wen-Jun Duan
- Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, Jinan University, Guangzhou 510632, China.
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, China.
| | - Hiroshi Kurihara
- Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, Jinan University, Guangzhou 510632, China.
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, China.
| | - Yi-Fang Li
- Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, Jinan University, Guangzhou 510632, China.
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, China.
| | - Rong-Rong He
- Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, Jinan University, Guangzhou 510632, China.
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, China.
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27
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Monjo ALA, Pringle ES, Thornbury M, Duguay BA, Monro SMA, Hetu M, Knight D, Cameron CG, McFarland SA, McCormick C. Photodynamic Inactivation of Herpes Simplex Viruses. Viruses 2018; 10:v10100532. [PMID: 30274257 PMCID: PMC6213367 DOI: 10.3390/v10100532] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 09/27/2018] [Accepted: 09/28/2018] [Indexed: 02/04/2023] Open
Abstract
Herpes simplex virus (HSV) infections can be treated with direct acting antivirals like acyclovir and foscarnet, but long-term use can lead to drug resistance, which motivates research into broadly-acting antivirals that can provide a greater genetic barrier to resistance. Photodynamic inactivation (PDI) employs a photosensitizer, light, and oxygen to create a local burst of reactive oxygen species that inactivate microorganisms. The botanical plant extract OrthoquinTM is a powerful photosensitizer with antimicrobial properties. Here we report that Orthoquin also has antiviral properties. Photoactivated Orthoquin inhibited herpes simplex virus type 1 (HSV-1) and herpes simplex virus type 2 (HSV-2) infection of target cells in a dose-dependent manner across a broad range of sub-cytotoxic concentrations. HSV inactivation required direct contact between Orthoquin and the inoculum, whereas pre-treatment of target cells had no effect. Orthoquin did not cause appreciable damage to viral capsids or premature release of viral genomes, as measured by qPCR for the HSV-1 genome. By contrast, immunoblotting for HSV-1 antigens in purified virion preparations suggested that higher doses of Orthoquin had a physical impact on certain HSV-1 proteins that altered protein mobility or antigen detection. Orthoquin PDI also inhibited the non-enveloped adenovirus (AdV) in a dose-dependent manner, whereas Orthoquin-mediated inhibition of the enveloped vesicular stomatitis virus (VSV) was light-independent. Together, these findings suggest that the broad antiviral effects of Orthoquin-mediated PDI may stem from damage to viral attachment proteins.
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Affiliation(s)
- Andrea L-A Monjo
- Department of Microbiology and Immunology, Dalhousie University, 5850 College Street, Halifax, NS B3H 4R2, Canada.
| | - Eric S Pringle
- Department of Microbiology and Immunology, Dalhousie University, 5850 College Street, Halifax, NS B3H 4R2, Canada.
| | - Mackenzie Thornbury
- Department of Microbiology and Immunology, Dalhousie University, 5850 College Street, Halifax, NS B3H 4R2, Canada.
- Department of Pathology and Cell Biology, University of Montreal, V-541 Pavillon Roger Gaudry, 2900 Boulevard Édouard-Montpetit, Montreal, QC H3C 3J7, Canada.
| | - Brett A Duguay
- Department of Microbiology and Immunology, Dalhousie University, 5850 College Street, Halifax, NS B3H 4R2, Canada.
| | - Susan M A Monro
- Department of Chemistry, Acadia University, 6 University Avenue, Wolfville, NS B4P 2R6, Canada.
- Photodynamic, Inc., 1344 Summer Street, Halifax, NS B3H 0A8, Canada.
| | - Marc Hetu
- Department of Chemistry, Acadia University, 6 University Avenue, Wolfville, NS B4P 2R6, Canada.
- Photodynamic, Inc., 1344 Summer Street, Halifax, NS B3H 0A8, Canada.
| | - Danika Knight
- Department of Microbiology and Immunology, Dalhousie University, 5850 College Street, Halifax, NS B3H 4R2, Canada.
| | - Colin G Cameron
- Photodynamic, Inc., 1344 Summer Street, Halifax, NS B3H 0A8, Canada.
- Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, 301 McIver Street, Greensboro, NC 27402, USA.
| | - Sherri A McFarland
- Photodynamic, Inc., 1344 Summer Street, Halifax, NS B3H 0A8, Canada.
- Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, 301 McIver Street, Greensboro, NC 27402, USA.
| | - Craig McCormick
- Department of Microbiology and Immunology, Dalhousie University, 5850 College Street, Halifax, NS B3H 4R2, Canada.
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Arena MP, Elmastour F, Sane F, Drider D, Fiocco D, Spano G, Hober D. Inhibition of coxsackievirus B4 by Lactobacillus plantarum. Microbiol Res 2018; 210:59-64. [DOI: 10.1016/j.micres.2018.03.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 03/05/2018] [Accepted: 03/17/2018] [Indexed: 01/14/2023]
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Feng SX, Li MM, Zhao D, Li XH, Zhang L, Wang Z, Gao NN. Simultaneous Determination of 10 Anthraquinones in Rhubarb Based on HPLC-Q-HR/MS. CHINESE HERBAL MEDICINES 2017. [DOI: 10.1016/s1674-6384(17)60120-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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da Cunha AR, Duarte EL, Stassen H, Lamy MT, Coutinho K. Experimental and theoretical studies of emodin interacting with a lipid bilayer of DMPC. Biophys Rev 2017; 9:729-745. [PMID: 28940105 DOI: 10.1007/s12551-017-0323-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 08/29/2017] [Indexed: 12/23/2022] Open
Abstract
Emodin is one of the most abundant anthraquinone derivatives found in nature. It is the active principle of some traditional herbal medicines with known biological activities. In this work, we combined experimental and theoretical studies to reveal information about location, orientation, interaction and perturbing effects of Emodin on lipid bilayers, where we have taken into account the neutral form of the Emodin (EMH) and its anionic/deprotonated form (EM-). Using both UV/Visible spectrophotometric techniques and molecular dynamics (MD) simulations, we showed that both EMH and EM- are located in a lipid membrane. Additionally, using MD simulations, we revealed that both forms of Emodin are very close to glycerol groups of the lipid molecules, with the EMH inserted more deeply into the bilayer and more disoriented relative to the normal of the membrane when compared with the EM-, which is more exposed to interfacial water. Analysis of several structural properties of acyl chains of the lipids in a hydrated pure DMPC bilayer and in the presence of Emodin revealed that both EMH and EM- affect the lipid bilayer, resulting in a remarkable disorder of the bilayer in the vicinity of the Emodin. However, the disorder caused by EMH is weaker than that caused by EM-. Our results suggest that these disorders caused by Emodin might lead to distinct effects on lipid bilayers including its disruption which are reported in the literature.
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Affiliation(s)
- Antonio R da Cunha
- Universidade Federal do Maranhão, UFMA, Campus Balsas, Maranhão, 06500-000, Brazil.,Instituto de Física da Universidade de São Paulo, 05508-090, Cidade Universitária, São Paulo, Brazil
| | - Evandro L Duarte
- Instituto de Física da Universidade de São Paulo, 05508-090, Cidade Universitária, São Paulo, Brazil
| | - Hubert Stassen
- Grupo de Química Teórica, Instituto de Química, UFRGS, Av. Bento Gonçalves 9500, Porto Alegre, 91540-000, Brazil
| | - M Teresa Lamy
- Instituto de Física da Universidade de São Paulo, 05508-090, Cidade Universitária, São Paulo, Brazil
| | - Kaline Coutinho
- Instituto de Física da Universidade de São Paulo, 05508-090, Cidade Universitária, São Paulo, Brazil.
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Gruber-Dorninger C, Novak B, Nagl V, Berthiller F. Emerging Mycotoxins: Beyond Traditionally Determined Food Contaminants. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:7052-7070. [PMID: 27599910 DOI: 10.1021/acs.jafc.6b03413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Modern analytical techniques can determine a multitude of fungal metabolites contaminating food and feed. In addition to known mycotoxins, for which maximum levels in food are enforced, also currently unregulated, so-called "emerging mycotoxins" were shown to occur frequently in agricultural products. The aim of this review is to critically discuss the relevance of selected emerging mycotoxins to food and feed safety. Acute and chronic toxicity as well as occurrence data are presented for enniatins, beauvericin, moniliformin, fusaproliferin, fusaric acid, culmorin, butenolide, sterigmatocystin, emodin, mycophenolic acid, alternariol, alternariol monomethyl ether, and tenuazonic acid. By far not all of the detected compounds are toxicologically relevant at their naturally occurring levels and are therefore of little or no health concern to consumers. Still, gaps in knowledge have been identified for several compounds. These gaps should be closed by the scientific community in the coming years to allow a proper risk assessment.
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Affiliation(s)
| | - Barbara Novak
- BIOMIN Research Center , Technopark 1, 3430 Tulln, Austria
| | - Veronika Nagl
- BIOMIN Research Center , Technopark 1, 3430 Tulln, Austria
| | - Franz Berthiller
- Christian Doppler Laboratory for Mycotoxin Metabolism and Center for Analytical Chemistry, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences, Vienna (BOKU) , Konrad-Lorenz-Strasse 20, 3430 Tulln, Austria
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Dong X, Fu J, Yin X, Cao S, Li X, Lin L, Ni J. Emodin: A Review of its Pharmacology, Toxicity and Pharmacokinetics. Phytother Res 2016; 30:1207-18. [PMID: 27188216 PMCID: PMC7168079 DOI: 10.1002/ptr.5631] [Citation(s) in RCA: 388] [Impact Index Per Article: 48.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 03/17/2016] [Accepted: 04/02/2016] [Indexed: 12/12/2022]
Abstract
Emodin is a natural anthraquinone derivative that occurs in many widely used Chinese medicinal herbs, such as Rheum palmatum, Polygonum cuspidatum and Polygonum multiflorum. Emodin has been used as a traditional Chinese medicine for over 2000 years and is still present in various herbal preparations. Emerging evidence indicates that emodin possesses a wide spectrum of pharmacological properties, including anticancer, hepatoprotective, antiinflammatory, antioxidant and antimicrobial activities. However, emodin could also lead to hepatotoxicity, kidney toxicity and reproductive toxicity, particularly in high doses and with long-term use. Pharmacokinetic studies have demonstrated that emodin has poor oral bioavailability in rats because of its extensive glucuronidation. This review aims to comprehensively summarize the pharmacology, toxicity and pharmacokinetics of emodin reported to date with an emphasis on its biological properties and mechanisms of action. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Xiaoxv Dong
- School of Chinese Materia MedicaBeijing University of Chinese MedicineBeijing100102PR China
| | - Jing Fu
- School of Chinese Materia MedicaBeijing University of Chinese MedicineBeijing100102PR China
| | - Xingbin Yin
- School of Chinese Materia MedicaBeijing University of Chinese MedicineBeijing100102PR China
| | - Sali Cao
- School of Chinese Materia MedicaBeijing University of Chinese MedicineBeijing100102PR China
| | - Xuechun Li
- School of Chinese Materia MedicaBeijing University of Chinese MedicineBeijing100102PR China
| | - Longfei Lin
- School of Chinese Materia MedicaBeijing University of Chinese MedicineBeijing100102PR China
| | - Huyiligeqi
- School of Chinese Materia MedicaBeijing University of Chinese MedicineBeijing100102PR China
- Affiliated Hospital, Inner Mongolia University for NationalitiesTongliao028000PR China
| | - Jian Ni
- School of Chinese Materia MedicaBeijing University of Chinese MedicineBeijing100102PR China
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Antiviral effect of emodin from Rheum palmatum against coxsakievirus B5 and human respiratory syncytial virus in vitro. ACTA ACUST UNITED AC 2015; 35:916-922. [PMID: 26670446 PMCID: PMC7089517 DOI: 10.1007/s11596-015-1528-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 06/10/2015] [Indexed: 12/11/2022]
Abstract
Viral infections are the major causes of morbidity and mortality in elderly people and young children throughout the world. The most common pathogens include coxsackie virus (CV) and respiratory syncytial virus (RSV). However, no antiviral agents with low toxicity and drug resistance are currently available in clinic therapy. The present study aimed to examine the antiviral activities of emodin (an ingredient of Rheum palmatum) against CVB5 and RSV infections, in an attempt to discover new antiviral agents for virus infection. The monomer emodin was extracted and isolated from Rheum palmatum. The antiviral activities of emodin on HEp-2 cells were evaluated, including virus replication inhibition, virucidal and anti-absorption effects, by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tet-razolium bromide (MTT) assay and plaque reduction assay (PRA). The kinetics of virus inhibition by emodin in a period of 14 h was further determined by plaque assay and quantitative real time PCR (qPCR). Cytokine (IFN-γ, TNF-α) mRNA expressions after emodin treatment (7.5, 15, 30 μmol/L) were also assessed by qPCR post-infection. The results showed that emodin had potent inhibitory activities against CVB5 and RSV, with the 50% effective concentration (EC50) ranging from 13.06 to 14.27 μmol/L and selectivity index (SI) being 5.38–6.41 μmol/L. However, emodin couldn’t directly inactivate the viruses or block their absorption to cells. It acted as a biological synthesis inhibitor against CVB4 and RSV in a concentration- and time-dependent manner, especially during the first 0–4 h post-infection. Moreover, emodin could decrease the mRNA expression of IFN-α but enhance TNF-γ expression significantly compared to the viral controls in vitro. Our results provide a molecular basis for development of emodin as a novel and safe antiviral agent for human enterovirus and respiratory virus infection in the clinical therapy.
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Hassan STS, Masarčíková R, Berchová K. Bioactive natural products with anti-herpes simplex virus properties. J Pharm Pharmacol 2015; 67:1325-36. [DOI: 10.1111/jphp.12436] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Accepted: 04/12/2015] [Indexed: 01/07/2023]
Abstract
Abstract
Objectives
In this review, we highlight and summarise the most promising extracts, fractions and pure compounds as potential anti-herpes simplex virus (HSV) agents derived from microorganisms, marine organisms, fungi, animals and plants. The role of natural products in the development of anti-HSV drugs will be discussed.
Key findings
Herpes simplex viruses (HSV-1 and -2) are common human pathogens that remain a serious threat to human health. In recent years, a great interest has been devoted to the search for integrated management of HSV infections. Acyclovir and related nucleoside analogues have been licensed for the therapy that target viral DNA polymerase. Although these drugs are currently effective against HSV infections, the intensive use of these drugs has led to the problem of drug-resistant strains. Therefore, the search for new sources to develop new antiherpetic agents has gained major priority to overcome the problem.
Summary
Natural products as potential, new anti-HSV drugs provide several advantages such as reduced side effects, less resistance, low toxicity and various mechanisms of action. This paper aims to provide an overview of natural products that possess antiviral activity against HSV.
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Affiliation(s)
- Sherif T S Hassan
- Department of Natural Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic
- Department of Applied Ecology, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic
| | - Radka Masarčíková
- Department of Natural Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic
| | - Kateřina Berchová
- Department of Applied Ecology, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic
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Alam Z, Al-Mahdi Z, Zhu Y, McKee Z, Parris DS, Parikh HI, Kellogg GE, Kuchta A, McVoy MA. Anti-cytomegalovirus activity of the anthraquinone atanyl blue PRL. Antiviral Res 2014; 114:86-95. [PMID: 25499125 PMCID: PMC4289655 DOI: 10.1016/j.antiviral.2014.12.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 12/01/2014] [Accepted: 12/02/2014] [Indexed: 11/28/2022]
Abstract
The anthraquinone atanyl blue PRL inhibits human cytomegalovirus replication. The block to viral replication appears early after entry and substantially reduces viral immediate early gene expression. In vitro, atanyl blue PRL inhibits the nuclease activity of purified viral alkaline nuclease, UL98. The antiviral activity of atanyl blue PRL may be manifested through inhibition of UL98’s nuclease activity.
Human cytomegalovirus (CMV) causes significant disease in immunocompromised patients and serious birth defects if acquired in utero. Available CMV antivirals target the viral DNA polymerase, have significant toxicities, and suffer from resistance. New drugs targeting different pathways would be beneficial. The anthraquinone emodin is proposed to inhibit herpes simplex virus by blocking the viral nuclease. Emodin and related anthraquinones are also reported to inhibit CMV. In the present study, emodin reduced CMV infectious yield with an EC50 of 4.9 μM but was cytotoxic at concentrations only twofold higher. Related anthraquinones acid blue 40 and alizarin violet R inhibited CMV at only high concentrations (238–265 μM) that were also cytotoxic. However, atanyl blue PRL inhibited infectious yield of CMV with an EC50 of 6.3 μM, significantly below its 50% cytotoxic concentration of 216 μM. Atanyl blue PRL reduced CMV infectivity and inhibited spread. When added up to 1 h after infection, it dramatically reduced CMV immediate early protein expression and blocked viral DNA synthesis. However, it had no antiviral activity when added 24 h after infection. Interestingly, atanyl blue PRL inhibited nuclease activities of purified CMV UL98 protein with IC50 of 4.5 and 9.3 μM. These results indicate that atanyl blue PRL targets very early post-entry events in CMV replication and suggest it may act through inhibition of UL98, making it a novel CMV inhibitor. This compound may provide valuable insights into molecular events that occur at the earliest times post-infection and serve as a lead structure for antiviral development.
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Affiliation(s)
- Zohaib Alam
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Zainab Al-Mahdi
- Medical Science Department, College of Nursing, University of Babylon, Babylon, Iraq
| | - Yali Zhu
- Department of Molecular Virology, Immunology, and Medical Genetics, The Ohio State University, Columbus, OH 43210, USA
| | - Zachary McKee
- Department of Molecular Virology, Immunology, and Medical Genetics, The Ohio State University, Columbus, OH 43210, USA
| | - Deborah S Parris
- Department of Molecular Virology, Immunology, and Medical Genetics, The Ohio State University, Columbus, OH 43210, USA
| | - Hardik I Parikh
- Department of Medicinal Chemistry, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Glen E Kellogg
- Department of Medicinal Chemistry, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Alison Kuchta
- Department of Pediatrics, Virginia Commonwealth University School of Medicine, Richmond, VA 23298, USA
| | - Michael A McVoy
- Department of Pediatrics, Virginia Commonwealth University School of Medicine, Richmond, VA 23298, USA.
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Hornig J, McGregor A. Design and development of antivirals and intervention strategies against human herpesviruses using high-throughput approach. Expert Opin Drug Discov 2014; 9:891-915. [DOI: 10.1517/17460441.2014.922538] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Hong W, Li T, Song Y, Zhang R, Zeng Z, Han S, Zhang X, Wu Y, Li W, Cao Z. Inhibitory activity and mechanism of two scorpion venom peptides against herpes simplex virus type 1. Antiviral Res 2013; 102:1-10. [PMID: 24315793 PMCID: PMC7113736 DOI: 10.1016/j.antiviral.2013.11.013] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Revised: 11/12/2013] [Accepted: 11/27/2013] [Indexed: 02/08/2023]
Abstract
Hp1036 and Hp1239 are two new cationic host defense peptides from scorpion venom. They inhibitory effect on multiple steps of HSV-1 life cycle. They adopted α-helix structure in approximate membrane environment. They are virucidal of HSV-1 and destroyed the morphology of HSV-1. They easily entered Vero cells and reduced the intracellular viral infectivity.
Herpes simplex virus type 1 (HSV-1) is a widespread human pathogen that causes severe diseases, but there are not effective and safe drugs in clinical therapy besides acyclovir (ACV) and related nucleoside analogs. In this study, two new venom peptides from the scorpion Heterometrus petersii were identified with effective inhibitory effect on HSV-1 infection in vitro. Both Hp1036 and Hp1239 peptides exhibited potent virucidal activities against HSV-1 (EC50 = 0.43 ± 0.09 and 0.41 ± 0.06 μM, respectively) and effective inhibitory effects when added at the viral attachment (EC50 = 2.87 ± 0.16 and 5.73 ± 0.61 μM, respectively), entry (EC50 = 4.29 ± 0.35 and 4.32 ± 0.47 μM, respectively) and postentry (EC50 = 7.86 ± 0.80 and 8.41 ± 0.73 μM, respectively) steps. Both Hp1036 and Hp1239 peptides adopted α-helix structure in approximate membrane environment and resulted in the destruction of the viral morphology. Moreover, Hp1036 and Hp1239 peptides entered Vero cells and reduced the intracellular viral infectivity. Taken together, Hp1036 and Hp1239 peptides are two anti-viral peptides with effective inhibitory effect on multiple steps of HSV-1 life cycle and therefore are good candidate for development as virucides.
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Affiliation(s)
- Wei Hong
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei 430072, PR China
| | - Tian Li
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei 430072, PR China
| | - Yu Song
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei 430072, PR China
| | - Runhong Zhang
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei 430072, PR China
| | - Zhengyang Zeng
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei 430072, PR China
| | - Shisong Han
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, Wuhan University, Wuhan, Hubei 430072, PR China
| | - Xianzheng Zhang
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, Wuhan University, Wuhan, Hubei 430072, PR China
| | - Yingliang Wu
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei 430072, PR China
| | - Wenxin Li
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei 430072, PR China
| | - Zhijian Cao
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei 430072, PR China.
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Chiang HM, Tsai SY, Hsiao PL, Chiu CY, Hsiu SL, Wen KC. Determination of Total Polyphenol Glycosides in Polygoni Cuspidati Rhizoma and Rumecis Radix. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200900050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Liu Z, Wei F, Chen LJ, Xiong HR, Liu YY, Luo F, Hou W, Xiao H, Yang ZQ. In vitro and in vivo studies of the inhibitory effects of emodin isolated from Polygonum cuspidatum on Coxsakievirus B₄. Molecules 2013; 18:11842-58. [PMID: 24071990 PMCID: PMC6269740 DOI: 10.3390/molecules181011842] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 09/04/2013] [Accepted: 09/10/2013] [Indexed: 01/31/2023] Open
Abstract
The lack of effective therapeutics for Coxsackievirus B4 (CVB4) infection underscores the importance of finding novel antiviral compounds. Emodin (1,3,8-trihydroxy-6-methylanthraquinone) is one of the natural anthraquinone derivatives obtained from the root and rhizome of Polygonum cuspidatum. In the present study, the possibility of using emodin as a potential antiviral to treat CVB4 infection was explored in vitro and in mice. Emodin reduced CVB4 entry and replication on Hep-2 cells in a concentration- and time-dependent manner, with a 50% effective concentration (EC50) of 12.06 μM and selectivity index (SI) of 5.08, respectively. The inhibitory effect of emodin for CVB4 entry and replication was further confirmed by a quantitative real time PCR (qPCR) assay. The results further showed that the mice orally treated with different dosages of emodin displayed a dose dependent increase of survival rate, body weight and prolonged mean time of death (MTD), accompanied by significantly decreased myocardial virus titers and pathologic scores/lesions. Moreover, emodin could inhibit CVB4-induced apoptosis in vitro and in vivo. Our results indicated that emodin could be used as potential antiviral in the post-exposure prophylaxis for CVB4 infection.
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Affiliation(s)
- Zhao Liu
- State Key Laboratory of Virology, Institute of Medical Virology, School of Medicine, Wuhan University, Wuhan 430071, China; E-Mails: (Z.L.); (F.W.); (L.-J.C.); (H.-R.X.); (Y.-Y.L.); (F.L.); (W.H.); (H.X.)
- College of Pharmacy, South-Central University for Nationalities, Wuhan 430074, China
| | - Fei Wei
- State Key Laboratory of Virology, Institute of Medical Virology, School of Medicine, Wuhan University, Wuhan 430071, China; E-Mails: (Z.L.); (F.W.); (L.-J.C.); (H.-R.X.); (Y.-Y.L.); (F.L.); (W.H.); (H.X.)
- School of Basic Medicine, Hubei University of Chinese Medicine, Wuhan 430065, China
| | - Liang-Jun Chen
- State Key Laboratory of Virology, Institute of Medical Virology, School of Medicine, Wuhan University, Wuhan 430071, China; E-Mails: (Z.L.); (F.W.); (L.-J.C.); (H.-R.X.); (Y.-Y.L.); (F.L.); (W.H.); (H.X.)
| | - Hai-Rong Xiong
- State Key Laboratory of Virology, Institute of Medical Virology, School of Medicine, Wuhan University, Wuhan 430071, China; E-Mails: (Z.L.); (F.W.); (L.-J.C.); (H.-R.X.); (Y.-Y.L.); (F.L.); (W.H.); (H.X.)
| | - Yuan-Yuan Liu
- State Key Laboratory of Virology, Institute of Medical Virology, School of Medicine, Wuhan University, Wuhan 430071, China; E-Mails: (Z.L.); (F.W.); (L.-J.C.); (H.-R.X.); (Y.-Y.L.); (F.L.); (W.H.); (H.X.)
| | - Fan Luo
- State Key Laboratory of Virology, Institute of Medical Virology, School of Medicine, Wuhan University, Wuhan 430071, China; E-Mails: (Z.L.); (F.W.); (L.-J.C.); (H.-R.X.); (Y.-Y.L.); (F.L.); (W.H.); (H.X.)
| | - Wei Hou
- State Key Laboratory of Virology, Institute of Medical Virology, School of Medicine, Wuhan University, Wuhan 430071, China; E-Mails: (Z.L.); (F.W.); (L.-J.C.); (H.-R.X.); (Y.-Y.L.); (F.L.); (W.H.); (H.X.)
| | - Hong Xiao
- State Key Laboratory of Virology, Institute of Medical Virology, School of Medicine, Wuhan University, Wuhan 430071, China; E-Mails: (Z.L.); (F.W.); (L.-J.C.); (H.-R.X.); (Y.-Y.L.); (F.L.); (W.H.); (H.X.)
| | - Zhan-Qiu Yang
- State Key Laboratory of Virology, Institute of Medical Virology, School of Medicine, Wuhan University, Wuhan 430071, China; E-Mails: (Z.L.); (F.W.); (L.-J.C.); (H.-R.X.); (Y.-Y.L.); (F.L.); (W.H.); (H.X.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +86-27-6875-9136; Fax: +86-27-6875-8766
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Abstract
Based on a DNA sequence and relative genomic position similar to those other herpesviruses, varicella-zoster virus (VZV) open reading frame 48 (ORF48) is predicted to encode an alkaline nuclease. Here we report the cloning, expression, purification, and characterization of recombinant VZV ORF48 protein and a VZV ORF48 point mutation (T172P). Protein encoded by wild-type ORF48, but not mutant protein, displayed both endo- and exonuclease activity, identifying ORF48 as a potential therapeutic target in VZV disease since efficient viral replication requires viral nuclease activity.
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Zhong MG, Xiang YF, Qiu XX, Liu Z, Kitazato K, Wang YF. Natural products as a source of anti-herpes simplex virus agents. RSC Adv 2013. [DOI: 10.1039/c2ra21464d] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Xiong HR, Shen YY, Lu L, Hou W, Luo F, Xiao H, Yang ZQ. The inhibitory effect of Rheum palmatum against coxsackievirus B3 in vitro and in vivo. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2012; 40:801-12. [PMID: 22809033 DOI: 10.1142/s0192415x12500607] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Coxsackievirus B(3)(CVB(3)) infection is the major cause of viral myocarditis, as well as dilated cardiomypathy. Rhubarb is one of the oldest and best-known traditional Chinese medicines. We initiated this study to determine the antiviral effect of an ethanol extract from the roots and rhizoma of Rheum palmatum (R. palmatum, one of the Chinese Rhubarbs), against CVB(3) in tissue culture cells and in a mouse model. The ethanol extract from R. palmatum showed significant inhibitory activity against CVB(3) on HEp-2 cells when added after infection, with IC(50) of 4 μg/ml, TI of 10. The medicated mouse serum still contained the pharmaceutical compound 24 h after intraperitoneal injection, and exhibited an antiviral effect on CVB(3)-infected cells, especially in the 0.3 and 0.5 g/kg/day treatment groups. Furthermore, the CVB(3)-infected mice were treated with the extract solution with dosages of 0.3 g/kg/day beginning 24 h post-CVB(3) exposures. The ethanol extract treated mice showed alleviated clinical signs, better survival rate, prolonged MTD and decreased viral titers compared to the virus control group. Our results indicate that the ethanol extract from R. palmatum has the anti-CVB(3) activity in vitro and in vivo and thus provides a re-evaluation of this old remedy with a broad therapeutic potential.
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Affiliation(s)
- Hai-Rong Xiong
- State Key Laboratory of Virology/Institute of Medical Virology, School of Medicine, Wuhan University, China
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Xiong HR, Luo J, Hou W, Xiao H, Yang ZQ. The effect of emodin, an anthraquinone derivative extracted from the roots of Rheum tanguticum, against herpes simplex virus in vitro and in vivo. JOURNAL OF ETHNOPHARMACOLOGY 2011; 133:718-23. [PMID: 21050882 PMCID: PMC7126445 DOI: 10.1016/j.jep.2010.10.059] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2010] [Revised: 10/24/2010] [Accepted: 10/25/2010] [Indexed: 05/18/2023]
Abstract
AIM OF THE STUDY Herpes simplex viruses (HSV-1 and -2) are important pathogens for humans and the discovery of novel anti-HSV drugs with low toxicity deserves great efforts. Rhubarb is one of the oldest and best-known traditional Chinese medicines. We initiated this study to test if emodin is the active ingredients from Rheum tanguticum (R. tanguticum, one of the Chinese Rhubarb) against HSV infection and to investigate its antiviral activity on HSV infection in tissue culture cells and in a mouse model. MATERIALS AND METHODS Emodin (3-methyl-1,6,8-trihydroxyanthraquinone) was extracted and purified from R. tanguticum (cultivated at high mountainous area in Qinghai) and the purity was determined by high performance liquid chromatography. The antiviral experiments of emodin against HSV infection were performed in vitro and in vivo. In vivo, the HSV-infected mice were orally administered with emodin beginning at 24 h post-HSV exposures with dosages of 3.3 g/kg/day, 6.7 g/kg/day, and 11.3 g/kg/day, respectively, for 7 days. RESULTS Emodin was found to inhibit the replication of HSV-1 and HSV-2 in cell culture at the concentration of 50 μg/ml with antiviral index of 2.07 and 3.53, respectively. The emodin treatment increased the survival rate of HSV-infected mice, prolonged survival time and showed higher efficacy of HSV elimination from brain, heart, liver and ganglion, compared to the viral controls. In addition, the antiviral activity of emodin was found to be equivalent to that of acyclovir in vivo. CONCLUSIONS Our results indicate that emodin has the anti-HSV activity in vitro and in vivo and is thus a promising agent in the clinical therapy of HSV infection.
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Affiliation(s)
- Hai-Rong Xiong
- State Key Laboratory of Virology, State Laboratory of Antiviral and Tumor of Traditional Chinese Medicine, Institute of Medical Virology, Research Center of Food and Drug Evaluation, School of Medicine, Wuhan University, 185 Donghu Road, Wuhan 430071, PR China
| | - Jun Luo
- Medical Care Department, General Hospital of Guangzhou Millitary Command of PLA, Guangzhou 510010, PR China
| | - Wei Hou
- State Key Laboratory of Virology, State Laboratory of Antiviral and Tumor of Traditional Chinese Medicine, Institute of Medical Virology, Research Center of Food and Drug Evaluation, School of Medicine, Wuhan University, 185 Donghu Road, Wuhan 430071, PR China
| | - Hong Xiao
- State Key Laboratory of Virology, State Laboratory of Antiviral and Tumor of Traditional Chinese Medicine, Institute of Medical Virology, Research Center of Food and Drug Evaluation, School of Medicine, Wuhan University, 185 Donghu Road, Wuhan 430071, PR China
| | - Zhan-Qiu Yang
- State Key Laboratory of Virology, State Laboratory of Antiviral and Tumor of Traditional Chinese Medicine, Institute of Medical Virology, Research Center of Food and Drug Evaluation, School of Medicine, Wuhan University, 185 Donghu Road, Wuhan 430071, PR China
- Corresponding author. Tel.: +86 27 68759136; fax: +86 27 68758766.
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Su YJ, Tsai MS, Kuo YH, Chiu YF, Cheng CM, Lin ST, Lin YW. Role of Rad51 down-regulation and extracellular signal-regulated kinases 1 and 2 inactivation in emodin and mitomycin C-induced synergistic cytotoxicity in human non-small-cell lung cancer cells. Mol Pharmacol 2009; 77:633-43. [PMID: 20042515 DOI: 10.1124/mol.109.061887] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Emodin (1,3,8-trihydroxy-6-methyl-anthraquinone) is a natural anthraquinone derivative found in the roots and rhizomes of numerous plants. It is a tyrosine kinase inhibitor and has anticancer effects on lung cancer. Rad51 plays a central role in homologous recombination, and high levels of Rad51 expression are observed in chemo- or radioresistant carcinomas. Our previous studies have shown that the mitogen-activated protein kinase kinase (MKK) 1/2-extracellular signal-regulated kinase (ERK) 1/2 signal pathway maintains the expression of Rad51. Therefore, in this study, we hypothesized that emodin could enhance the effects of the antitumor antibiotic mitomycin C (MMC)-mediated cytotoxicity by decreasing the expression of Rad51 and the phosphorylation of ERK1/2. Exposure of the human non-small-cell lung cancer H1703 or A549 cell lines to emodin decreased the MMC-elicited phosphorylated ERK1/2 and Rad51 levels. Moreover, emodin significantly decreased the MMC-elicited Rad51 mRNA and protein levels by increasing the instability of Rad51 mRNA and protein. In emodin- and MMC-cotreated cells, ERK1/2 phosphorylation was enhanced by constitutively active MKK1/2 (MKK1/2-CA), thus increasing Rad51 protein levels and protein stability. The synergistic cytotoxic effects induced by emodin combined with MMC were remarkably decreased by MKK1-CA-mediated enhancement of ERK1/2 activation. Depletion of endogenous Rad51 expression by small interfering Rad51 RNA transfection significantly enhanced MMC-induced cell death and cell growth inhibition. In contrast, overexpression of Rad51 protects lung cancer cells from the synergistic cytotoxic effects induced by emodin and MMC. We conclude that suppression of Rad51 expression or a combination of emodin with chemotherapeutic agents may be considered as potential therapeutic modalities for lung cancer.
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Affiliation(s)
- Ying-Jhen Su
- Molecular Oncology Laboratory, Department of Biochemical Science and Technology, National Chiayi University, Chiayi, Taiwan
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Dang SS, Jia XL, Song P, Cheng YA, Zhang X, Sun MZ, Liu EQ. Inhibitory effect of emodin and Astragalus polysaccharide on the replication of HBV. World J Gastroenterol 2009; 15:5669-73. [PMID: 19960563 PMCID: PMC2789219 DOI: 10.3748/wjg.15.5669] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To evaluate the anti-viral effect of emodin plus Astragalus polysaccharide (APS) in hepatitis B virus (HBV) transgenic mice.
METHODS: Sixty HBV transgenic mice (HBV TGM) whose weight varied between 18 and 24 g were randomly divided into 3 groups, with 20 mice in each group. Group A was the normal control, where the mice were treated with physiological saline; group B was the positive control where the mice were treated with lamivudine solution (100 mL/kg per day). Group C was the experimental group where the mice were treated with physiological saline containing emodin and APS (57.59 mg/kg per day and 287.95 mg/kg per day, respectively). The mice were treated daily for 3 wk. After 1 wk recovery time, the mice were sacrificed and serum as well as liver tissues were collected for ELISA and histological examination.
RESULTS: After 21 d treatment, HBV DNA levels in group B and group C significantly declined when compared with group A (P < 0.05). However, a significant increase in HBV DNA content was observed in group B, whereas this phenomenon was not observed in group C. A reduction in the contents of HBsAg, HBeAg and HBcAg in the mice from group B and C was observed when compared with group A.
CONCLUSION: Emodin and APS have a weak but persistent inhibitory effect on HBV replication in vivo, which may function as a supplementary modality in the treatment of hepatitis B infection.
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Lai JM, Chang JT, Wen CL, Hsu SL. Emodin induces a reactive oxygen species-dependent and ATM-p53-Bax mediated cytotoxicity in lung cancer cells. Eur J Pharmacol 2009; 623:1-9. [PMID: 19744477 DOI: 10.1016/j.ejphar.2009.08.031] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2009] [Revised: 08/17/2009] [Accepted: 08/26/2009] [Indexed: 02/05/2023]
Abstract
Emodin (1,3,8-trihydroxy-6-methyl-anthraquinone), a natural anthraquinone compound isolated from the rhizome of rhubarb, has been reported to suppress tumor growth in many clinical situations. Here, we demonstrate that emodin induces apoptosis in human lung adenocarcinoma A549 cells by activating a reactive oxygen species-elicited ATM-p53-Bax signaling pathway. In response to emodin treatment, p53 protein increases in A549 cells, which in turn up-regulates Bax expression. Co-treating cells with either a p53 inhibitor or respectively knocking down the expression of p53 and Bax by shRNA extensively diminished emodin-induced cell viability, caspase 3 activation and the release of cytochrome c from the mitochondria, indicating the crucial role for p53/Bax in emodin-mediated cytotoxicity. Pre-treating cells with the antioxidant ascorbic acid not only prohibited the induction of reactive oxygen species by emodin, but also inhibited the up-regulation of p53. Upon emodin treatment, p53 is phosphorylated at Ser(15), which is accompanied by the ATM phosphorylation at Ser(1981). Both of these events could also be blocked by the presence of ascorbic acid. Moreover, knockdown of ATM by siRNA significantly reduced p53 phosphorylation and stabilization, indicating the upstream role of emodin-induced reactive oxygen species generation in ATM activation and following p53 phosphorylation and stabilization. Taken together, our results demonstrate that emodin-induced reactive oxygen species generation activates an ATM-p53-Bax-dependent signaling pathway, which consequently leads to mitochondria-dependent apoptotic cell death in human lung adenocarcinoma A549 cells.
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Affiliation(s)
- Jin-Mei Lai
- Department of Life Science, Fu Jen Catholic University, Taipei County, Taiwan
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A bridge crosses the active-site canyon of the Epstein-Barr virus nuclease with DNase and RNase activities. J Mol Biol 2009; 391:717-28. [PMID: 19538972 DOI: 10.1016/j.jmb.2009.06.034] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2009] [Revised: 05/29/2009] [Accepted: 06/12/2009] [Indexed: 11/24/2022]
Abstract
Epstein-Barr virus, a double-stranded DNA (dsDNA) virus, is a major human pathogen from the herpesvirus family. The nuclease is one of the lytic cycle proteins required for successful viral replication. In addition to the previously described endonuclease and exonuclease activities on single-stranded DNA and dsDNA substrates, we observed an RNase activity for Epstein-Barr virus nuclease in the presence of Mn(2+), giving a possible explanation for its role in host mRNA degradation. Its crystal structure shows a catalytic core of the D-(D/E)XK nuclease superfamily closely related to the exonuclease from bacteriophage lambda with a bridge across the active-site canyon. This bridge may reduce endonuclease activity, ensure processivity or play a role in strand separation of dsDNA substrates. As the DNA strand that is subject to cleavage is likely to make a sharp turn in front of the bridge, endonuclease activity on single-stranded DNA stretches appears to be possible, explaining the cleavage of circular substrates.
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Kim JR, Oh DR, Cha MH, Pyo BS, Rhee JH, Choy HE, Oh WK, Kim YR. Protective effect of polygoni cuspidati radix and emodin on Vibrio vulnificus cytotoxicity and infection. J Microbiol 2008; 46:737-43. [DOI: 10.1007/s12275-008-0232-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2008] [Accepted: 10/20/2008] [Indexed: 12/01/2022]
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