1
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Knany HR, Elsabbagh SA, Shehata MA, Eldehna WM, Bekhit AA, Ibrahim TM. In silico screening of SARS-CoV2 helicase using African natural products: Docking and molecular dynamics approaches. Virology 2023; 587:109863. [PMID: 37586235 DOI: 10.1016/j.virol.2023.109863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 07/19/2023] [Accepted: 08/03/2023] [Indexed: 08/18/2023]
Abstract
In the current medical era, there is an urgent necessity to identify new effective drugs to enrich the COVID-19's therapeutic arsenal. The SARS-COV-2 NSP13/helicase enzyme has been identified as a potential target for developing novel COVID-19 inhibitors. In this work, we aimed at endorsing effective natural products with potential inhibitory action towards the NSP13 through the virtual screening of 1012 natural products of botanical and marine origin from the South African Natural Compounds Database (SANCDB). The molecules were docked into the NTPase active site, and the best twelve compounds were chosen for further analysis. Thereafter, a combination of molecular dynamics simulations and MM-GBSA free energy calculations were carried out for a subset of best hits complexed with NSP13 helicase. We believe that the findings of this work will pave the way for additional research and experimental validation of some natural products as viable NSP13 helicase inhibitors.
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Affiliation(s)
- Hamada R Knany
- Department of Pharmacognosy, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt
| | - Sherif A Elsabbagh
- Biochemistry Department, Institute of Pharmacy, Eberhard-Karls University, Auf der Morgenstelle 8, 72076, Tuebingen, Germany
| | - Moustafa A Shehata
- Department of Zoology, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Wagdy M Eldehna
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt
| | - Adnan A Bekhit
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Alexandria University, Alexandria, 21521, Egypt; Cancer Nanotechnology Research Laboratory (CNRL), Faculty of Pharmacy, Alexandria University, Alexandria, 21521, Egypt; Pharmacy Program, Allied Health Department, College of Health and Sport Sciences, University of Bahrain, P.O. Box 32038, Kingdom of Bahrain
| | - Tamer M Ibrahim
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt.
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2
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Wang M, Yang B, Ren Z, Liu J, Lu C, Jiang H, Ling F, Wang G, Liu T. Inhibition of the largemouth bass virus replication by piperine demonstrates potential application in aquaculture. JOURNAL OF FISH DISEASES 2023; 46:261-271. [PMID: 36504104 DOI: 10.1111/jfd.13740] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 11/23/2022] [Accepted: 11/29/2022] [Indexed: 06/17/2023]
Abstract
Largemouth bass virus (LMBV) is a systemic viral pathogen that can cause high mortality rates in cultivated largemouth bass. However, no treatment is currently approved. Therapeutic strategies against LMBV infection are urgently needed. In this study, we investigated the antiviral activity of piperine against LMBV in vitro and in vivo. In vitro antiviral activity assay showed that 210.28 μM piperine significantly decreased LMBV major capsid protein (MCP) gene expression in epithelioma papulosum cyprinid (EPC) cells by a maximum inhibitory rate of >95%. Piperine treatment inhibited LMBV replication in a dose-dependent manner, with the half-maximal activity (IC50 ) of 34.61 μM. Moreover, piperine significantly decreased the viral titers and cytopathic effects (CPE), contributing to the protection of infected cells. With regard to the steps of piperine affecting the life cycle of viruses, piperine had a direct inactivating effect on LMBV. During the virus adsorption phase, piperine prevented the adsorption of LMBV to EPC cells. Furthermore, piperine played an antiviral role mainly in the later stages of viral infection (4-8 h). To further evaluate the antiviral activity of piperine against LMBV in vivo, largemouth bass as a model organism was carried out in relevant experiments. Intraperitoneal injection of piperine (25 mg/kg) effectively improved the survival rate of LMBV-infected largemouth bass by 20%. In addition, RT-qPCR results of viral replication in liver, spleen, kidney, gill and swim bladder tissues showed that piperine significantly inhibited LMBV replication in vivo, thus protecting largemouth bass from LMBV-induced death. Together, our results suggested that piperine is a therapeutic and preventative agent against LMBV infection.
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Affiliation(s)
- Mengmeng Wang
- College of Animal Science and Technology, Northwest A & F University, Yangling, China
| | - Bin Yang
- College of Animal Science and Technology, Northwest A & F University, Yangling, China
| | - Zongyi Ren
- College of Animal Science and Technology, Northwest A & F University, Yangling, China
| | - Jietao Liu
- College of Animal Science and Technology, Northwest A & F University, Yangling, China
| | - Chenwang Lu
- College of Animal Science and Technology, Northwest A & F University, Yangling, China
| | - Haifeng Jiang
- College of Animal Science and Technology, Northwest A & F University, Yangling, China
| | - Fei Ling
- College of Animal Science and Technology, Northwest A & F University, Yangling, China
| | - Gaoxue Wang
- College of Animal Science and Technology, Northwest A & F University, Yangling, China
| | - Tianqiang Liu
- College of Animal Science and Technology, Northwest A & F University, Yangling, China
- Shenzhen Research Institute, Northwest A & F University, Shenzhen, China
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3
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Song X, Wang Y, Li F, Cao W, Zeng Q, Qin S, Wang Z, Jia J, Xiao J, Hu X, Liu K, Wang Y, Ren Z. Hsp90 Inhibitors Inhibit the Entry of Herpes Simplex Virus 1 Into Neuron Cells by Regulating Cofilin-Mediated F-Actin Reorganization. Front Microbiol 2022; 12:799890. [PMID: 35082770 PMCID: PMC8785254 DOI: 10.3389/fmicb.2021.799890] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 11/10/2021] [Indexed: 11/15/2022] Open
Abstract
Herpes simplex virus 1 (HSV-1) is a common neurotropic virus, the herpes simplex encephalitis (HSE) caused by which is considered to be the most common sporadic but fatal encephalitis. Traditional antiviral drugs against HSV-1 are limited to nucleoside analogs targeting viral factors. Inhibition of heat shock protein 90 (Hsp90) has potent anti-HSV-1 activities via numerous mechanisms, but the effects of Hsp90 inhibitors on HSV-1 infection in neuronal cells, especially in the phase of virus entry, are still unknown. In this study, we aimed to investigate the effects of the Hsp90 inhibitors on HSV-1 infection of neuronal cells. Interestingly, we found that Hsp90 inhibitors promoted viral adsorption but inhibited subsequent penetration in neuronal cell lines and primary neurons, which jointly confers the antiviral activity of the Hsp90 inhibitors. Mechanically, Hsp90 inhibitors mainly impaired the interaction between Hsp90 and cofilin, resulting in reduced cofilin membrane distribution, which led to F-actin polymerization to promote viral attachment. However, excessive polymerization of F-actin inhibited subsequent viral penetration. Consequently, unidirectional F-actin polymerization limits the entry of HSV-1 virions into neuron cells. Our research extended the molecular mechanism of Hsp90 in HSV-1 infection in neuron cells and provided a theoretical basis for developing antiviral drugs targeting Hsp90.
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Affiliation(s)
- Xiaowei Song
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Yiliang Wang
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, China.,Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, China.,Key Laboratory of Bioengineering Medicine of Guangdong Province, Jinan University, Guangzhou, China
| | - Feng Li
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, China.,Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, China
| | - Wenyan Cao
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, China.,Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, China.,Key Laboratory of Bioengineering Medicine of Guangdong Province, Jinan University, Guangzhou, China
| | - Qiongzhen Zeng
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, China.,Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, China.,Key Laboratory of Bioengineering Medicine of Guangdong Province, Jinan University, Guangzhou, China
| | - Shurong Qin
- College of Pharmacy, Jinan University, Guangzhou, China
| | - Zhaoyang Wang
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, China.,Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, China
| | - Jiaoyan Jia
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, China.,Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, China
| | - Ji Xiao
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Xiao Hu
- College of Pharmacy, Jinan University, Guangzhou, China
| | - Kaisheng Liu
- The Second Clinical Medical College, Shenzhen People's Hospital, Jinan University, Guangzhou, China
| | - Yifei Wang
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Zhe Ren
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, China
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4
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Ebob OT, Babiaka SB, Ntie-Kang F. Natural Products as Potential Lead Compounds for Drug Discovery Against SARS-CoV-2. NATURAL PRODUCTS AND BIOPROSPECTING 2021; 11:611-628. [PMID: 34515981 PMCID: PMC8435765 DOI: 10.1007/s13659-021-00317-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 09/01/2021] [Indexed: 05/09/2023]
Abstract
For the past 2 years, the coronavirus responsible for the COVID-19 infection has become a world pandemic, ruining the lives and economies of several nations in the world. This has scaled up research on the virus and the resulting infection with the goal of developing new vaccines and therapies. Natural products are known to be a rich source of lead compounds for drug discovery, including against infectious diseases caused by microbes (viruses, bacteria and fungi). In this review article, we conducted a literature survey aimed at identifying natural products with inhibitory concentrations against the coronaviruses or their target proteins, which lie below 10 µM. This led to the identification of 42 compounds belonging to the alkaloid, flavonoid, terpenoid, phenolic, xanthone and saponin classes. The cut off concentration of 10 µM was to limit the study to the most potent chemical entities, which could be developed into therapies against the viral infection to make a contribution towards limiting the spread of the disease.
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Affiliation(s)
- Oyere Tanyi Ebob
- Department of Chemistry, Faculty of Science, University of Buea, P.O. Box 63, Buea, Cameroon
| | - Smith B. Babiaka
- Department of Chemistry, Faculty of Science, University of Buea, P.O. Box 63, Buea, Cameroon
| | - Fidele Ntie-Kang
- Department of Chemistry, Faculty of Science, University of Buea, P.O. Box 63, Buea, Cameroon
- Institute for Pharmacy, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 3, 06120 Halle (Saale), Germany
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5
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Khan T, Khan MA, Mashwani ZUR, Ullah N, Nadhman A. Therapeutic potential of medicinal plants against COVID-19: The role of antiviral medicinal metabolites. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020; 31:101890. [PMID: 33520034 PMCID: PMC7831775 DOI: 10.1016/j.bcab.2020.101890] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 11/27/2020] [Accepted: 12/07/2020] [Indexed: 12/15/2022]
Abstract
There are numerous trials underway to find treatment for the COVID-19 through testing vaccines as well as existing drugs. Apart from the many synthetic chemical compounds, plant-based compounds could provide an array of \suitable candidates for testing against the virus. Studies have confirmed the role of many plants against respiratory viruses when employed either as crude extracts or their active ingredients in pure form. The purpose of this review article is to highlight the importance of phytomedicine against COVID-19. The main aim is to review the mechanistic aspects of most important phytochemical compounds that have showed potential against coronaviruses. Glycyrrhizin from the roots of Glycyrrhiza glabra has shown promising potential against the previously epidemic coronavirus, SARS-CoV. Other important plants such as Artemisia annua, Isatis indigotica, Lindera aggregate, Pelargonium sidoides, and Glychirrhiza spp. have been employed against SARS-CoV. Active ingredients (e.g. emodin, reserpine, aescin, myricetin, scutellarin, apigenin, luteolin, and betulonic acid) have shown promising results against the coronaviruses. Phytochemicals have demonstrated activity against the coronaviruses through mechanisms such as viral entry inhibition, inhibition of replication enzymes and virus release blockage. However, compared to synthetic drugs, phytomedicine are mechanistically less understood and should be properly evaluated before application. Nonetheless, phytochemicals reduce the tedious job of drug discovery and provide a less time-consuming alternative for drug testing. Therefore, along with other drugs currently tested against COVID-19, plant-based drugs should be included for speedy development of COVID-19 treatment.
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Affiliation(s)
- Tariq Khan
- Department of Biotechnology, University of Malakand, Chakdara, KP, Pakistan
| | - Mubarak Ali Khan
- Department of Biotechnology, Faculty of Chemical and Life Sciences, Abdul Wali Khan University Mardan (AWKUM), Mardan, 23390, Pakistan
| | | | - Nazif Ullah
- Department of Biotechnology, Faculty of Chemical and Life Sciences, Abdul Wali Khan University Mardan (AWKUM), Mardan, 23390, Pakistan
| | - Akhtar Nadhman
- Department of Integrative Biosciences, CECOS University, Peshawar, Pakistan
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6
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Wang Y, Song X, Wang Y, Huang L, Luo W, Li F, Qin S, Wang Y, Xiao J, Wu Y, Jin F, Kitazato K, Wang Y. Dysregulation of cofilin-1 activity-the missing link between herpes simplex virus type-1 infection and Alzheimer's disease. Crit Rev Microbiol 2020; 46:381-396. [PMID: 32715819 DOI: 10.1080/1040841x.2020.1794789] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Alzheimer's disease (AD) is a multifactorial disease triggered by environmental factors in combination with genetic predisposition. Infectious agents, in particular herpes simplex virus type 1 (HSV-1), are gradually being recognised as important factors affecting the development of AD. However, the mechanism linking HSV-1 and AD remains unknown. Of note, HSV-1 manipulates the activity of cofilin-1 to ensure their efficient infection in neuron cells. Cofilin-1, the main regulator of actin cytoskeleton reorganization, is implicating for the plastic of dendritic spines and axon regeneration of neuronal cells. Moreover, dysfunction of cofilin-1 is observed in most AD patients, as well as in mice with AD and ageing. Further, inhibition of cofilin-1 activity ameliorates the host cognitive impairment in an animal model of AD. Together, dysregulation of cofilin-1 led by HSV-1 infection is a potential link between HSV-1 and AD. Herein, we critically summarize the role of cofilin-1-mediated actin dynamics in both HSV-1 infection and AD, respectively. We also propose several hypotheses regarding the connecting roles of cofilin-1 dysregulation in HSV-1 infection and AD. Our review provides a foundation for future studies targeting individuals carrying HSV-1 in combination with cofilin-1 to promote a more individualised approach for treatment and prevention of AD.
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Affiliation(s)
- Yiliang Wang
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, PR China.,Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, PR China.,Key Laboratory of Bioengineering Medicine of Guangdong Province, Jinan University, Guangzhou, PR China
| | - Xiaowei Song
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, PR China.,Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, PR China.,Key Laboratory of Bioengineering Medicine of Guangdong Province, Jinan University, Guangzhou, PR China
| | - Yun Wang
- Department of Obstetrics and gynecology, The First affiliated hospital of Jinan University, Guangzhou, PR China
| | - Lianzhou Huang
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, PR China.,Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, PR China.,Key Laboratory of Bioengineering Medicine of Guangdong Province, Jinan University, Guangzhou, PR China
| | - Weisheng Luo
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, PR China.,Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, PR China.,Key Laboratory of Bioengineering Medicine of Guangdong Province, Jinan University, Guangzhou, PR China
| | - Feng Li
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, PR China.,Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, PR China.,Key Laboratory of Bioengineering Medicine of Guangdong Province, Jinan University, Guangzhou, PR China
| | - Shurong Qin
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, PR China.,Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, PR China.,Key Laboratory of Bioengineering Medicine of Guangdong Province, Jinan University, Guangzhou, PR China
| | - Yuan Wang
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, PR China.,Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, PR China.,Key Laboratory of Bioengineering Medicine of Guangdong Province, Jinan University, Guangzhou, PR China
| | - Ji Xiao
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, PR China.,Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, PR China.,Key Laboratory of Bioengineering Medicine of Guangdong Province, Jinan University, Guangzhou, PR China
| | - Yanting Wu
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, PR China.,Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, PR China.,Key Laboratory of Bioengineering Medicine of Guangdong Province, Jinan University, Guangzhou, PR China
| | - Fujun Jin
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, PR China.,Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, PR China.,Key Laboratory of Bioengineering Medicine of Guangdong Province, Jinan University, Guangzhou, PR China
| | - Kaio Kitazato
- Division of Molecular Pharmacology of Infectious Agents, Department of Molecular Microbiology and Immunology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Yifei Wang
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, PR China.,Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, PR China.,Key Laboratory of Bioengineering Medicine of Guangdong Province, Jinan University, Guangzhou, PR China
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7
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Wang Y, Huang L, Wang Y, Luo W, Li F, Xiao J, Qin S, Wang Z, Song X, Wang Y, Jin F, Wang Y. Single-cell RNA-sequencing analysis identifies host long noncoding RNA MAMDC2-AS1 as a co-factor for HSV-1 nuclear transport. Int J Biol Sci 2020; 16:1586-1603. [PMID: 32226304 PMCID: PMC7097924 DOI: 10.7150/ijbs.42556] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 02/02/2020] [Indexed: 12/29/2022] Open
Abstract
Herpes simplex virus (HSV) type 1 (HSV-1) infection exhibited high heterogeneity at individual cells level, including the different gene expression patterns and varying amounts of progeny virus. However, the underlying mechanism of such variability remains obscure. The importance of host long noncoding RNAs (lncRNAs) in virus infection had been recognized, while the contribution of lncRNAs to the heterogeneous infection remains unknown. Herein, a prior single-cell RNA sequencing data using HSV-1 reporter strain expressing ICP4-YFP was re-analyzed to obtain the differentially expressed lncRNA between the successfully initiated viral gene expression (ICP4-YFP+) cells and the aborted infection cells (ICP4-YFP-). The ICP4-YFP+ population show a higher abundance of MAMDC2 antisense 1 (MAMDC2-AS1) lncRNA than ICP4-YFP- population. MAMDC2-AS1 silencing reduces the expression of HSV-1 immediate early (IE) genes and limit HSV-1 infection in human host cells. Consistently, ectopic expression of MAMDC2-AS1 enhances HSV-1 IE genes transcription and facilitates the formation of HSV-1-induced plaques. Mechanically, both RNA-pull down and RNA immunoprecipitation assays show that MAMDC2-AS1 interacts with the RNA binding protein heat shock protein 90α (Hsp90α), a molecular chaperone involving in the nuclear import of HSV-1. The MAMDC2-AS1-Hsp90α interaction facilitates the nuclear transport of viral tegument protein VP16, the core factor initiating the expression of HSV-1 IE genes. The transcription factor YY1 mediates the induction of MAMDC2-AS1 upon HSV-1 infection. Our study elucidates the contribution of lncRNA to HSV-1 infection susceptibility in human cells and the role of Hsp90α RNA binding activity in HSV-1 infection.
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Affiliation(s)
- Yiliang Wang
- College of Life science and Technology, Guangzhou Jinan Biomedicine Research and Development Center, Jinan University, Guangzhou 510632, PR China
| | - Lianzhou Huang
- College of Life science and Technology, Guangzhou Jinan Biomedicine Research and Development Center, Jinan University, Guangzhou 510632, PR China.,College of Pharmacy, Jinan University, Guangzhou 510632, PR China
| | - Yun Wang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Jinan University, Guangzhou 510632, PR China
| | - Weisheng Luo
- College of Life science and Technology, Guangzhou Jinan Biomedicine Research and Development Center, Jinan University, Guangzhou 510632, PR China
| | - Feng Li
- College of Life science and Technology, Guangzhou Jinan Biomedicine Research and Development Center, Jinan University, Guangzhou 510632, PR China
| | - Ji Xiao
- College of Life science and Technology, Guangzhou Jinan Biomedicine Research and Development Center, Jinan University, Guangzhou 510632, PR China
| | - Shurong Qin
- College of Pharmacy, Jinan University, Guangzhou 510632, PR China
| | - Zhaoyang Wang
- College of Life science and Technology, Guangzhou Jinan Biomedicine Research and Development Center, Jinan University, Guangzhou 510632, PR China
| | - Xiaowei Song
- College of Pharmacy, Jinan University, Guangzhou 510632, PR China
| | - Yuan Wang
- College of Life science and Technology, Guangzhou Jinan Biomedicine Research and Development Center, Jinan University, Guangzhou 510632, PR China
| | - Fujun Jin
- Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University, Guangzhou 510632, PR China
| | - Yifei Wang
- College of Life science and Technology, Guangzhou Jinan Biomedicine Research and Development Center, Jinan University, Guangzhou 510632, PR China
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8
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Pentagalloylglucose Inhibits the Replication of Rabies Virus via Mediation of the miR-455/SOCS3/STAT3/IL-6 Pathway. J Virol 2019; 93:JVI.00539-19. [PMID: 31243136 DOI: 10.1128/jvi.00539-19] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 06/23/2019] [Indexed: 02/07/2023] Open
Abstract
Our previous study showed that pentagalloylglucose (PGG), a naturally occurring hydrolyzable phenolic tannin, possesses significant anti-rabies virus (RABV) activity. In BHK-21 cells, RABV induced the overactivation of signal transducer and activator of transcription 3 (STAT3) by suppressing the expression of suppressor of cytokine signaling 3 (SOCS3). Inhibition of STAT3 by niclosamide, small interfering RNA, or exogenous expression of SOCS3 all significantly suppressed the replication of RABV. Additionally, RABV-induced upregulation of microRNA 455-5p (miR-455-5p) downregulated SOCS3 by directly binding to the 3' untranslated region (UTR) of SOCS3. Importantly, PGG effectively reversed the expression of miR-455-5p and its following SOCS3/STAT3 signaling pathway. Finally, activated STAT3 elicited the expression of interleukin-6 (IL-6), thereby contributing to RABV-associated encephalomyelitis; however, PGG restored the level of IL-6 in vitro and in vivo in a SOCS3/STAT3-dependent manner. Altogether, these data identify a new miR-455-5p/SOCS3/STAT3 signaling pathway that contributes to viral replication and IL-6 production in RABV-infected cells, with PGG exerting its antiviral effect by inhibiting the production of miR-455-5p and the activation of STAT3.IMPORTANCE Rabies virus causes lethal encephalitis in mammals and poses a serious public health threat in many parts of the world. Numerous strategies have been explored to combat rabies; however, their efficacy has always been unsatisfactory. We previously reported a new drug, PGG, which possesses a potent inhibitory activity on RABV replication. Herein, we describe the underlying mechanisms by which PGG exerts its anti-RABV activity. Our results show that RABV induces overactivation of STAT3 in BHK-21 cells, which facilitates viral replication. Importantly, PGG effectively inhibits the activity of STAT3 by disrupting the expression of miR-455-5p and increases the level of SOCS3 by directly targeting the 3' UTR of SOCS3. Furthermore, the downregulated STAT3 inhibits the production of IL-6, thereby contributing to a reduction in the inflammatory response in vivo Our study indicates that PGG effectively inhibits the replication of RABV by the miR-455-5p/SOCS3/STAT3/IL-6-dependent pathway.
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9
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Heat-shock protein 90α is involved in maintaining the stability of VP16 and VP16-mediated transactivation of α genes from herpes simplex virus-1. Mol Med 2018; 24:65. [PMID: 30577726 PMCID: PMC6303900 DOI: 10.1186/s10020-018-0066-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 12/05/2018] [Indexed: 01/24/2023] Open
Abstract
Background Numerous host cellular factors are exploited by viruses to facilitate infection. Our previous studies and those of others have shown heat-shock protein 90 (Hsp90), a cellular molecular chaperone, is involved in herpes simplex virus (HSV)-1 infection. However, the function of the dominant Hsp90 isoform and the relationship between Hsp90 and HSV-1 α genes remain unclear. Methods and results Hsp90α knockdown or inhibition significantly inhibited the promoter activity of HSV-1 α genes and downregulated virion protein 16(VP16) expression from virus and plasmids. The Hsp90α knockdown-induced suppression of α genes promoter activity and downregulation of α genes was reversed by VP16 overexpression, indicating that Hsp90α is involved in VP16-mediated transcription of HSV-1 α genes. Co-immunoprecipitation experiments indicated that VP16 interacted with Hsp90α through the conserved core domain within VP16. Based on using autophagy inhibitors and the presence of Hsp90 inhibitors in ATG7−/− (autophagy-deficient) cells, Hsp90 inhibition-induced degradation of VP16 is dependent on macroautophagy-mediated degradation but not chaperone-mediated autophagy (CMA) pathway. In vivo studies demonstrated that treatment with gels containing Hsp90 inhibitor effectively reduced the level of VP16 and α genes, which may contribute to the amelioration of the skin lesions in an HSV-1 infection mediated zosteriform model. Conclusion Our study provides new insights into the mechanisms by which Hsp90α facilitates the transactivation of HSV-1 α genes and viral infection, and highlights the importance of developing selective inhibitors targeting the interaction between Hsp90α and VP16 to reduce toxicity, a major challenge in the clinical use of Hsp90 inhibitors. Electronic supplementary material The online version of this article (10.1186/s10020-018-0066-x) contains supplementary material, which is available to authorized users.
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10
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Tu Z, Gong W, Zhang Y, Feng Y, Liu Y, Tu C. Inhibition of Rabies Virus by 1,2,3,4,6-Penta- O-galloyl-β-d-Glucose Involves mTOR-Dependent Autophagy. Viruses 2018; 10:v10040201. [PMID: 29673174 PMCID: PMC5923495 DOI: 10.3390/v10040201] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 04/04/2018] [Accepted: 04/14/2018] [Indexed: 12/25/2022] Open
Abstract
The compound 1,2,3,4,6-penta-O-galloyl-β-d-glucose (PGG), a gallotannin present in various plants such as Rhus chinensis Mill and Paeonia suffruticosa, has a broad spectrum of antiviral effects. The present study investigated its potency against infection of mice with rabies virus (RABV). Results demonstrated that PGG strongly inhibited virus titers (50-fold), viral mRNA expression (up to 90%), and protein synthesis in vitro. Importantly, we found that PGG not only suppressed viral adsorption and entry, but also directly inactivated RABV through suppression of autophagy by mediating activation of the mTOR-dependent autophagy signaling pathway. In vivo, PGG (10 mg/kg) alleviated the clinical symptoms and reduced the mortality of infected mice by 27.3%. Collectively, our results indicate that PGG has potent anti-RABV effect, and merits further investigation as an anti-RABV drug.
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Affiliation(s)
- Zhongzhong Tu
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Jilin 130122, China.
| | - Wenjie Gong
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Jilin 130122, China.
| | - Yan Zhang
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Jilin 130122, China.
| | - Ye Feng
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Jilin 130122, China.
| | - Yan Liu
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Jilin 130122, China.
| | - Changchun Tu
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Jilin 130122, China.
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11
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Cytoskeletons in the Closet-Subversion in Alphaherpesvirus Infections. Viruses 2018; 10:v10020079. [PMID: 29438303 PMCID: PMC5850386 DOI: 10.3390/v10020079] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 01/30/2018] [Accepted: 02/07/2018] [Indexed: 12/14/2022] Open
Abstract
Actin filaments, microtubules and intermediate filaments form the cytoskeleton of vertebrate cells. Involved in maintaining cell integrity and structure, facilitating cargo and vesicle transport, remodelling surface structures and motility, the cytoskeleton is necessary for the successful life of a cell. Because of the broad range of functions these filaments are involved in, they are common targets for viral pathogens, including the alphaherpesviruses. Human-tropic alphaherpesviruses are prevalent pathogens carried by more than half of the world’s population; comprising herpes simplex virus (types 1 and 2) and varicella-zoster virus, these viruses are characterised by their ability to establish latency in sensory neurons. This review will discuss the known mechanisms involved in subversion of and transport via the cytoskeleton during alphaherpesvirus infections, focusing on protein-protein interactions and pathways that have recently been identified. Studies on related alphaherpesviruses whose primary host is not human, along with comparisons to more distantly related beta and gammaherpesviruses, are also presented in this review. The need to decipher as-yet-unknown mechanisms exploited by viruses to hijack cytoskeletal components—to reveal the hidden cytoskeletons in the closet—will also be addressed.
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12
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Luo F, Liu J, Wang Y, Xu M, Ren Z. PGG impairs herpes simplex virus type 1 infection via blocking capsid assembly. Future Virol 2018. [DOI: 10.2217/fvl-2017-0109] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aim: Pentagalloylglucose (PGG), a hydrolyzable polyphenol was isolated from Phyllanthus emblica, which exhibited a strong inhibitory activity on HSV-1 infection, but its underlying mechanisms have not been completely delineated. Results/methodology: Using TEM, we first observed that PGG blocked the formation and maturation of HSV-1 capsid particles. Hence, we engaged in exploring the molecular mechanisms of PGG on the capsid assembly. At last, we found that PGG also blocked the relocalization of capsid proteins from the cytoplasm to the nucleus where the assembly took place. Conclusion: The current studies, for the first time, demonstrated acetylated microtubules were needed at this process of capsid proteins nuclear translocation. PGG also impairs herpes simplex virus type 1 infection by blocking capsid assembly.
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Affiliation(s)
- Fan Luo
- Guangzhou Jinan Biomedicine Research & Development Center, National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou, Guangdong, China
- The Industry-Academia-Research Demonstration Base of Guangdong Higher Education Institutes (Namely Innovative Culturing Base of Graduates), Jinan University, Guangzhou, Guangdong, China
- College of Life Science & Technology, Jinan University, Guangzhou, Guangdong, China
| | - Junwei Liu
- Guangzhou Jinan Biomedicine Research & Development Center, National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou, Guangdong, China
| | - Yifei Wang
- Guangzhou Jinan Biomedicine Research & Development Center, National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou, Guangdong, China
- The Industry-Academia-Research Demonstration Base of Guangdong Higher Education Institutes (Namely Innovative Culturing Base of Graduates), Jinan University, Guangzhou, Guangdong, China
| | - Mingfang Xu
- College of Life Science & Technology, Jinan University, Guangzhou, Guangdong, China
| | - Zhe Ren
- Guangzhou Jinan Biomedicine Research & Development Center, National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou, Guangdong, China
- The Industry-Academia-Research Demonstration Base of Guangdong Higher Education Institutes (Namely Innovative Culturing Base of Graduates), Jinan University, Guangzhou, Guangdong, China
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13
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Torres-León C, Ventura-Sobrevilla J, Serna-Cock L, Ascacio-Valdés JA, Contreras-Esquivel J, Aguilar CN. Pentagalloylglucose (PGG): A valuable phenolic compound with functional properties. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.07.045] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023] Open
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14
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Lavoie S, Côté I, Pichette A, Gauthier C, Ouellet M, Nagau-Lavoie F, Mshvildadze V, Legault J. Chemical composition and anti-herpes simplex virus type 1 (HSV-1) activity of extracts from Cornus canadensis. Altern Ther Health Med 2017; 17:123. [PMID: 28228101 PMCID: PMC5322616 DOI: 10.1186/s12906-017-1618-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 02/02/2017] [Indexed: 11/10/2022]
Abstract
BACKGROUND Many plants of boreal forest of Quebec have been used by Native Americans to treat a variety of microbial infections. However, the antiviral activities of these plants have been seldom evaluated on cellular models to validate their in vitro efficiencies. In this study, Cornus canadensis L. (Cornaceae), a plant used in Native American traditional medicine to treat possible antiviral infections, has been selected for further examination. METHODS The plant was extracted by decoction and infusion with water, water/ethanol 1:1 and ethanol to obtain extracts similar to those used by Native Americans. The effects of the extracts were tested on herpes simplex virus type-1 (HSV-1) using a plaque reduction assay. Moreover, bioassay-guided fractionation was achieved to isolate bioactive compounds. RESULTS Water/ethanol 1:1 infusion of C. canadensis leaves were the most active extracts to inhibit virus absorption with EC50 of about 9 μg mL-1, whereas for direct mode, both extraction methods using water or water/ethanol 1:1 as solvent were relatively similar with EC50 ranging from 11 to 17 μg mL-1. The fractionation led to the identification of active fractions containing hydrolysable tannins. Tellimagrandin I was found the most active compound with an EC50 of 2.6 μM for the direct mode and 5.0 μM for the absorption mode. CONCLUSION Altogether, the results presented in this work support the antiviral activity of Cornus canadensis used in Native American traditional medicine.
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Kaushik NK, Guha R, Thomas BM. Antiviral potential and mode of action of Indigofera heterantha against HSV-2 by targeting the early stages of infection. Antivir Ther 2016; 22:381-391. [PMID: 28008866 DOI: 10.3851/imp3118] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/29/2016] [Indexed: 10/20/2022]
Abstract
BACKGROUND The development of antivirals against herpes simplex virus 2 (HSV-2) has a major public health importance because of the wide spectrum of associated clinical disease in both immunocompetent and immunocompromised populations. Even with the extensive use of acyclovir, issues such as emergence of drug-resistant strains, poor oral bioavailability and low effectiveness in recurrent infections have highlighted the requirement for alternate therapies. Plants, which are rich in metabolites and active against viruses, are being explored as one such source. We had earlier reported specific and potent anti-HSV-2 activity from the roots of the plant Indigofera heterantha. Herein, we describe the mechanism by which it exerts this antiviral potential against HSV-2. METHODS MTT, plaque reduction and immunofluorescence techniques were used for in vitro antiviral studies. Animal studies were carried out in HSV-2-infected mice followed by plaque reduction assays. RESULTS The extract was found to act at multiple steps of viral entry viz attachment, adsorption and penetration by blocking binding sites present on the viral envelope glycoproteins which eventually blocks its binding with the cell surface receptors present on the host cells. We also showed efficacy of PP9706642 topical application in prohibiting HSV-2 invasion to nearby organs from the site of infection, that is vagina in HSV-2 infected animals. CONCLUSIONS The extract targets the early and late stages of HSV-2 viral life cycle and thus shows great promise as both a prophylactic as well as therapeutic phytopharmaceutical against HSV-2.
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Affiliation(s)
| | - Rupa Guha
- Piramal Healthcare Limited, Mumbai, India
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16
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Sun YL, Wang J, Wang YF, Zhang XY, Nong XH, Chen MY, Xu XY, Qi SH. Cytotoxic and antiviral tetramic acid derivatives from the deep-sea-derived fungus Trichobotrys effuse DFFSCS021. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.10.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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17
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Jin F, Ma K, Chen M, Zou M, Wu Y, Li F, Wang Y. Pentagalloylglucose Blocks the Nuclear Transport and the Process of Nucleocapsid Egress to Inhibit HSV-1 Infection. Jpn J Infect Dis 2015; 69:135-42. [PMID: 26166506 DOI: 10.7883/yoken.jjid.2015.137] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Herpes simplex virus type 1 (HSV-1), a widespread virus, causes a variety of human viral diseases worldwide. The serious threat of drug-resistance highlights the extreme urgency to develop novel antiviral drugs with different mechanisms of action. Pentagalloylglucose (PGG) is a natural polyphenolic compound with significant anti-HSV activity; however, the mechanisms underlying its antiviral activity need to be defined by further studies. In this study, we found that PGG treatment delays the nuclear transport process of HSV-1 particles by inhibiting the upregulation of dynein (a cellular major motor protein) induced by HSV-1 infection. Furthermore, PGG treatment affects the nucleocapsid egress of HSV-1 by inhibiting the expression and disrupting the cellular localization of pEGFP-UL31 and pEGFP-UL34, which are indispensable for HSV-1 nucleocapsid egress from the nucleus. However, the over-expression of pEGFP-UL31 and pEGFP-UL34 could decrease the antiviral effect of PGG. In this study, for the first time, the antiviral activity of PGG against acyclovir-resistant virus was demonstrated in vitro, and the possible mechanisms of its anti-HSV activities were identified based on the inhibition of nuclear transport and nucleocapsid egress in HSV-1. It was further confirmed that PGG could be a promising candidate for HSV therapy, especially for drug-resistant strains.
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Affiliation(s)
- Fujun Jin
- Guangzhou Jinan Biomedicine Research and Development Center, National Engineering Research Center of Genetic Medicine, Jinan University
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18
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Zheng K, Kitazato K, Wang Y, He Z. Pathogenic microbes manipulate cofilin activity to subvert actin cytoskeleton. Crit Rev Microbiol 2015; 42:677-95. [PMID: 25853495 DOI: 10.3109/1040841x.2015.1010139] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Actin-depolymerizing factor (ADF)/cofilin proteins are key players in controlling the temporal and spatial extent of actin dynamics, which is crucial for mediating host-pathogen interactions. Pathogenic microbes have evolved molecular mechanisms to manipulate cofilin activity to subvert the actin cytoskeletal system in host cells, promoting their internalization into the target cells, modifying the replication niche and facilitating their intracellular and intercellular dissemination. The study of how these pathogens exploit cofilin pathways is crucial for understanding infectious disease and providing potential targets for drug therapies.
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Affiliation(s)
- Kai Zheng
- a Department of Pharmacy, School of Medicine , Shenzhen University , Shenzhen , Guangdong , People's Republic of China .,c Guangzhou Jinan Biomedicine Research and Development Center, National Engineering Research Center of Genetic Medicine, Jinan University , Guangzhou , China
| | - Kaio Kitazato
- b Division of Molecular Pharmacology of Infectious Agents, Department of Molecular Microbiology and Immunology , Nagasaki University , Nagasaki , Japan , and
| | - Yifei Wang
- c Guangzhou Jinan Biomedicine Research and Development Center, National Engineering Research Center of Genetic Medicine, Jinan University , Guangzhou , China
| | - Zhendan He
- a Department of Pharmacy, School of Medicine , Shenzhen University , Shenzhen , Guangdong , People's Republic of China
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19
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Cofilin-1 is involved in regulation of actin reorganization during influenza A virus assembly and budding. Biochem Biophys Res Commun 2014; 453:821-5. [DOI: 10.1016/j.bbrc.2014.10.036] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Accepted: 10/08/2014] [Indexed: 11/18/2022]
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20
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Zhao JQ, Wang YM, Zhu HT, Wang D, Li SH, Cheng RR, Yang CR, Wang YF, Xu M, Zhang YJ. Highly Oxygenated Limonoids and Lignans from Phyllanthus flexuosus. NATURAL PRODUCTS AND BIOPROSPECTING 2014; 4:233-42. [PMID: 25089242 PMCID: PMC4111870 DOI: 10.1007/s13659-014-0026-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Accepted: 05/29/2014] [Indexed: 05/05/2023]
Abstract
ABSTRACT Two new highly oxygenated limonoids, flexuosoids A (1) and B (2), and three new arylnaphthalene lignan glycosides, phyllanthusmins D-F (3-5), were isolated from the roots of Phyllanthus flexuosus, in addition to three known lignans, phyllanthusmin C, arabelline, and (+)-diasyringaresinol. Their structures were elucidated on the basis of detailed spectroscopic analysis and chemical methods. Compounds 1 and 2, two new decaoxygenated limonoids with a C-19/29 lactol bridge and heptaoxygenated substituents at C-1, C-2, C-3, C-7, C-11, C-17, and C-30, represent the second example of limonoids in the Euphorbiaceae family. Most of the isolates were tested for their antifeedant, anti-herpes simplex virus 1, and cytotoxic activities. The new limonoids 1 and 2 showed promising antifeedant activity against the beet army worm (Spodoptera exigua) with EC50 values of 25.1 and 17.3 μg/cm(2), respectively. In addition, both of them displayed moderate cytotoxicity against the ECA109 human esophagus cancer cell line, along with the known lignan glycoside, phyllanthusmin C, with the IC50 values of 11.5 (1), 8.5 (2), and 7.8 (phyllanthusmin C) μM, respectively. GRAPHICAL ABSTRACT Two new highly oxygenated limonoids, flexuosoids A (1) and B (2), and three new arylnaphthalene lignan glycosides, phyllanthusmins D-F (3-5), were isolated from the roots of Phyllanthus flexuosus, along with three known lignans. Flexuosoids A (1) and B (2) showed promising antifeedant activity against the beet army worm (Spodoptera exigua) with EC50 values of 25.1 and 17.3 μg/cm(2), respectively. In addition, both of them and the known lignan glycoside, phyllanthusmin C, displayed moderate cytotoxicity against the ECA109 human esophagus cancer cell line, with the IC50 values of 11.5, 8.5, and 7.8 μM, respectively.
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Affiliation(s)
- Jian-Qiang Zhao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201 People’s Republic of China
- University of Chinese Academy of Sciences, Beijing, 100049 People’s Republic of China
| | - Yan-Ming Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201 People’s Republic of China
- University of Chinese Academy of Sciences, Beijing, 100049 People’s Republic of China
| | - Hong-Tao Zhu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201 People’s Republic of China
| | - Dong Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201 People’s Republic of China
| | - Sheng-Hong Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201 People’s Republic of China
| | - Rong-Rong Cheng
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201 People’s Republic of China
| | - Chong-Ren Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201 People’s Republic of China
| | - Yi-Fei Wang
- Guangzhou Jinan Biomedicine Research and Development Center, Guangzhou, 510632 People’s Republic of China
| | - Min Xu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201 People’s Republic of China
| | - Ying-Jun Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201 People’s Republic of China
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21
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Zhong M, Zheng K, Chen M, Xiang Y, Jin F, Ma K, Qiu X, Wang Q, Peng T, Kitazato K, Wang Y. Heat-shock protein 90 promotes nuclear transport of herpes simplex virus 1 capsid protein by interacting with acetylated tubulin. PLoS One 2014; 9:e99425. [PMID: 24901434 PMCID: PMC4047101 DOI: 10.1371/journal.pone.0099425] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Accepted: 05/14/2014] [Indexed: 01/04/2023] Open
Abstract
Although it is known that inhibitors of heat shock protein 90 (Hsp90) can inhibit herpes simplex virus type 1 (HSV-1) infection, the role of Hsp90 in HSV-1 entry and the antiviral mechanisms of Hsp90 inhibitors remain unclear. In this study, we found that Hsp90 inhibitors have potent antiviral activity against standard or drug-resistant HSV-1 strains and viral gene and protein synthesis are inhibited in an early phase. More detailed studies demonstrated that Hsp90 is upregulated by virus entry and it interacts with virus. Hsp90 knockdown by siRNA or treatment with Hsp90 inhibitors significantly inhibited the nuclear transport of viral capsid protein (ICP5) at the early stage of HSV-1 infection. In contrast, overexpression of Hsp90 restored the nuclear transport that was prevented by the Hsp90 inhibitors, suggesting that Hsp90 is required for nuclear transport of viral capsid protein. Furthermore, HSV-1 infection enhanced acetylation of α-tubulin and Hsp90 interacted with the acetylated α-tubulin, which is suppressed by Hsp90 inhibition. These results demonstrate that Hsp90, by interacting with acetylated α-tubulin, plays a crucial role in viral capsid protein nuclear transport and may provide novel insight into the role of Hsp90 in HSV-1 infection and offer a promising strategy to overcome drug-resistance.
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Affiliation(s)
- Meigong Zhong
- Guangzhou Jinan Biomedicine Research and Development Center, National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou, PR China; College of Pharmacy, Jinan University, Guangzhou, PR China
| | - Kai Zheng
- Guangzhou Jinan Biomedicine Research and Development Center, National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou, PR China
| | - Maoyun Chen
- Guangzhou Jinan Biomedicine Research and Development Center, National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou, PR China; College of Pharmacy, Jinan University, Guangzhou, PR China
| | - Yangfei Xiang
- Guangzhou Jinan Biomedicine Research and Development Center, National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou, PR China
| | - Fujun Jin
- Guangzhou Jinan Biomedicine Research and Development Center, National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou, PR China; College of Pharmacy, Jinan University, Guangzhou, PR China
| | - Kaiqi Ma
- Guangzhou Jinan Biomedicine Research and Development Center, National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou, PR China
| | - Xianxiu Qiu
- Guangzhou Jinan Biomedicine Research and Development Center, National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou, PR China; College of Pharmacy, Jinan University, Guangzhou, PR China
| | - Qiaoli Wang
- Guangzhou Jinan Biomedicine Research and Development Center, National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou, PR China
| | - Tao Peng
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, PR China
| | - Kaio Kitazato
- Division of Molecular Pharmacology of Infectious Agents, Department of Molecular Microbiology and Immunology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Yifei Wang
- Guangzhou Jinan Biomedicine Research and Development Center, National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou, PR China
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22
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Biological and biomedical functions of Penta-O-galloyl-D-glucose and its derivatives. J Nat Med 2014; 68:465-72. [PMID: 24532420 DOI: 10.1007/s11418-014-0823-2] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Accepted: 01/24/2014] [Indexed: 12/13/2022]
Abstract
Penta-O-galloyl-D-glucose (PGG) is a simple hydrolysable tannin in plants. PGG exists in two anomeric forms, α-PGG and β-PGG. While β-PGG can be found in a wide variety of plants, α-PGG is rather rare in nature. Numerous studies with β-PGG revealed a wide variety of biological activities, such as anti-microbial and anti-cancer functions. Until recently, studies with α-PGG were limited by the lack of its availability. Since the development of an efficient chemical synthesis of the compound, several investigations have revealed its anti-diabetic, anti-cancer, and anti-platelet-coagulation functions. Based on structure-activity-relationship (SAR) studies with α-PGG, a variety of α-PGG-related novel compounds were synthesized and some of them have been shown to possess promising therapeutic activities. In this review, the authors will survey and evaluate the biological functions of PGG with a focus on α-PGG and its derivatives.
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23
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Epidermal growth factor receptor-PI3K signaling controls cofilin activity to facilitate herpes simplex virus 1 entry into neuronal cells. mBio 2014; 5:e00958-13. [PMID: 24425731 PMCID: PMC3903278 DOI: 10.1128/mbio.00958-13] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Herpes simplex virus type 1 (HSV-1) establishes latency in neurons and can cause severe disseminated infection with neurological impairment and high mortality. This neurodegeneration is thought to be tightly associated with virus-induced cytoskeleton disruption. Currently, the regulation pattern of the actin cytoskeleton and the involved molecular mechanisms during HSV-1 entry into neurons remain unclear. Here, we demonstrate that the entry of HSV-1 into neuronal cells induces biphasic remodeling of the actin cytoskeleton and an initial inactivation followed by the subsequent activation of cofilin, a member of the actin depolymerizing factor family that is critical for actin reorganization. The disruption of F-actin dynamics or the modulation of cofilin activity by mutation, knockdown, or overexpression affects HSV-1 entry efficacy and virus-mediated cell ruffle formation. Binding of the HSV-1 envelope initiates the epidermal growth factor receptor (EGFR)-phosphatidylinositide 3-kinase (PI3K) signaling pathway, which leads to virus-induced early cofilin phosphorylation and F-actin polymerization. Moreover, the extracellular signal-regulated kinase (ERK) kinase and Rho-associated, coiled-coil-containing protein kinase 1 (ROCK) are recruited as downstream mediators of the HSV-1-induced cofilin inactivation pathway. Inhibitors specific for those kinases significantly reduce the virus infectivity without affecting virus binding to the target cells. Additionally, lipid rafts are clustered to promote EGFR-associated signaling cascade transduction. We propose that HSV-1 hijacks cofilin to initiate infection. These results could promote a better understanding of the pathogenesis of HSV-1-induced neurological diseases. The actin cytoskeleton is involved in many crucial cellular processes and acts as an obstacle to pathogen entry into host cells. Because HSV-1 establishes lifelong latency in neurons and because neuronal cytoskeletal disruption is thought to be the main cause of HSV-1-induced neurodegeneration, understanding the F-actin remodeling pattern by HSV-1 infection and the molecular interactions that facilitate HSV-1 entry into neurons is important. In this study, we showed that HSV-1 infection induces the rearrangement of the cytoskeleton as well as the initial inactivation and subsequent activation of cofilin. Then, we determined that activation of the EGFR-PI3K-Erk1/2 signaling pathway inactivates cofilin and promotes F-actin polymerization. We postulate that by regulating actin cytoskeleton dynamics, cofilin biphasic activation could represent the specific cellular machinery usurped by pathogen infection, and these results will greatly contribute to the understanding of HSV-1-induced early and complex changes in host cells that are closely linked to HSV-1 pathogenesis.
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Xiang Y, Zheng K, Zhong M, Chen J, Wang X, Wang Q, Wang S, Ren Z, Fan J, Wang Y. Ubiquitin-proteasome-dependent slingshot 1 downregulation in neuronal cells inactivates cofilin to facilitate HSV-1 replication. Virology 2013; 449:88-95. [PMID: 24418541 DOI: 10.1016/j.virol.2013.11.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 07/09/2013] [Accepted: 11/06/2013] [Indexed: 10/26/2022]
Abstract
Actin and its regulators are critical for neuronal function. Infection with herpes simplex virus 1 (HSV-1) remodels neuronal cell actin dynamics, which may relate virus-induced pathological processes in the nervous system. We previously demonstrated that cofilin is an actin regulator that participates in HSV-1-induced actin dynamics in neuronal cells, but how HSV-1 regulates cofilin has remained unclear. In the present study, we demonstrated the HSV-1-induced the inactivation of cofilin and the accumulation of phosphorylated cofilin in the nucleus, which together benefited viral replication. This consistent cofilin inactivation was achieved by the downregulation of slingshot 1 (SSH1). Notably, virus-induced SSH1 downregulation depended on the ubiquitin-proteasome system. Cofilin inactivation is therefore critical for HSV-1 replication during neuronal infection and is maintained by SSH1 downregulation. Moreover, these results provide new insight into the HSV-1-induced neurological pathogenesis and suggest potential new strategies to inhibit HSV-1 replication.
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Affiliation(s)
- Yangfei Xiang
- Biomedicine Research and Development Center, Guangdong Provincial Key Laboratory of Bioengineering Medicine, National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou 510632, China; College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Kai Zheng
- Biomedicine Research and Development Center, Guangdong Provincial Key Laboratory of Bioengineering Medicine, National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou 510632, China
| | - Meigong Zhong
- Biomedicine Research and Development Center, Guangdong Provincial Key Laboratory of Bioengineering Medicine, National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou 510632, China; College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Jia Chen
- Biomedicine Research and Development Center, Guangdong Provincial Key Laboratory of Bioengineering Medicine, National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou 510632, China; College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Xiao Wang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510080, China
| | - Qiaoli Wang
- Biomedicine Research and Development Center, Guangdong Provincial Key Laboratory of Bioengineering Medicine, National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou 510632, China
| | - Shaoxiang Wang
- Biomedicine Research and Development Center, Guangdong Provincial Key Laboratory of Bioengineering Medicine, National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou 510632, China
| | - Zhe Ren
- Biomedicine Research and Development Center, Guangdong Provincial Key Laboratory of Bioengineering Medicine, National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou 510632, China
| | - Jianglin Fan
- Department of Molecular Pathology, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo-City 409-3898, Japan
| | - Yifei Wang
- Biomedicine Research and Development Center, Guangdong Provincial Key Laboratory of Bioengineering Medicine, National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou 510632, China.
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Alphaherpesviral US3 kinase induces cofilin dephosphorylation to reorganize the actin cytoskeleton. J Virol 2013; 87:4121-6. [PMID: 23365433 DOI: 10.1128/jvi.03107-12] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The conserved alphaherpesviral serine/threonine kinase US3 causes dramatic actin rearrangements, associated with increased viral spread. Here, we show that US3 of pseudorabies virus (PRV) leads to activation (dephosphorylation) of the central actin regulator cofilin. A mutation that impairs US3 kinase activity and the group I p21-activated kinase inhibitor IPA-3 inhibited US3-mediated cofilin activation. Additionally, expression of phosphomimetic S3D cofilin significantly suppressed the ability of US3 to cause cell projections and cell rounding. In conclusion, the US3 kinase of PRV leads to activation (dephosphorylation) of cofilin, and cofilin contributes to US3-mediated actin rearrangements.
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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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27
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Li T, Peng T. Traditional Chinese herbal medicine as a source of molecules with antiviral activity. Antiviral Res 2012; 97:1-9. [PMID: 23153834 PMCID: PMC7114103 DOI: 10.1016/j.antiviral.2012.10.006] [Citation(s) in RCA: 120] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2012] [Revised: 10/15/2012] [Accepted: 10/16/2012] [Indexed: 12/11/2022]
Abstract
Traditional Chinese herbal medicine (TCHM) is widely used in the prevention and treatment of viral infectious diseases. However, the operative mechanisms of TCHM remain largely obscure, mainly because of its complicated nature and the fragmented nature of research. In recent years, systematic methodologies have been developed to discover the active compounds in TCHM and to elucidate its underlying mechanisms. In this review, we summarize recent progress in TCHM-based antiviral research in China and other Asian countries. In particular, this review focuses on progress in targeting key steps in the viral replication cycle and key cellular components of the host defense system. Recent developments in centralized and standardized TCHM screening and databases are also summarized.
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Affiliation(s)
- Ting Li
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
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28
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Chen H, Li H, Cao F, Zhen L, Bai J, Yuan S, Mei Y. 1,2,3,4,6-penta-O-galloyl-β-D-glucose protects PC12 Cells from MPP+-mediated cell death by inducing heme oxygenase-1 in an ERK- and Akt-dependent manner. ACTA ACUST UNITED AC 2012; 32:737-745. [DOI: 10.1007/s11596-012-1027-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2012] [Indexed: 02/06/2023]
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29
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Anti-herpes simplex virus efficacies of 2-aminobenzamide derivatives as novel HSP90 inhibitors. Bioorg Med Chem Lett 2012; 22:4703-6. [DOI: 10.1016/j.bmcl.2012.05.079] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2012] [Revised: 05/11/2012] [Accepted: 05/21/2012] [Indexed: 01/22/2023]
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30
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Cofilin 1-mediated biphasic F-actin dynamics of neuronal cells affect herpes simplex virus 1 infection and replication. J Virol 2012; 86:8440-51. [PMID: 22623803 DOI: 10.1128/jvi.00609-12] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Herpes simplex virus 1 (HSV-1) invades the nervous system and causes pathological changes. In this study, we defined the remodeling of F-actin and its possible mechanisms during HSV-1 infection of neuronal cells. HSV-1 infection enhanced the formation of F-actin-based structures in the early stage of infection, which was followed by a continuous decrease in F-actin during the later stages of infection. The disruption of F-actin dynamics by chemical inhibitors significantly reduced the efficiency of viral infection and intracellular HSV-1 replication. The active form of the actin-depolymerizing factor cofilin 1 was found to increase at an early stage of infection and then to continuously decrease in a manner that corresponded to the remodeling pattern of F-actin, suggesting that cofilin 1 may be involved in the biphasic F-actin dynamics induced by HSV-1 infection. Knockdown of cofilin 1 impaired HSV-1-induced F-actin assembly during early infection and inhibited viral entry; however, overexpression of cofilin 1 did not affect F-actin assembly or viral entry during early infection but decreased intracellular viral reproduction efficiently. Our results, for the first time, demonstrated the biphasic F-actin dynamics in HSV-1 neuronal infection and confirmed the association of F-actin with the changes in the expression and activity of cofilin 1. These results may provide insight into the mechanism by which HSV-1 productively infects neuronal cells and causes pathogenesis.
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31
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Zaichick SV, Bohannon KP, Smith GA. Alphaherpesviruses and the cytoskeleton in neuronal infections. Viruses 2011; 3:941-81. [PMID: 21994765 PMCID: PMC3185784 DOI: 10.3390/v3070941] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2011] [Revised: 06/03/2011] [Accepted: 06/17/2011] [Indexed: 12/13/2022] Open
Abstract
Following infection of exposed peripheral tissues, neurotropic alphaherpesviruses invade nerve endings and deposit their DNA genomes into the nuclei of neurons resident in ganglia of the peripheral nervous system. The end result of these events is the establishment of a life-long latent infection. Neuroinvasion typically requires efficient viral transmission through a polarized epithelium followed by long-distance transport through the viscous axoplasm. These events are mediated by the recruitment of the cellular microtubule motor proteins to the intracellular viral particle and by alterations to the cytoskeletal architecture. The focus of this review is the interplay between neurotropic herpesviruses and the cytoskeleton.
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Affiliation(s)
- Sofia V Zaichick
- Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.
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Liu G, Xiong S, Xiang YF, Guo CW, Ge F, Yang CR, Zhang YJ, Wang YF, Kitazato K. Antiviral activity and possible mechanisms of action of pentagalloylglucose (PGG) against influenza A virus. Arch Virol 2011; 156:1359-69. [DOI: 10.1007/s00705-011-0989-9] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2010] [Accepted: 03/21/2011] [Indexed: 10/18/2022]
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