1
|
Duan Y, Li H, Huang S, Li Y, Chen S, Xie L. Phloretin inhibits transmissible gastroenteritis virus proliferation via multiple mechanisms. J Gen Virol 2024; 105. [PMID: 38814698 DOI: 10.1099/jgv.0.001996] [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] [Indexed: 05/31/2024] Open
Abstract
Transmissible gastroenteritis virus (TGEV), an enteropathogenic coronavirus, has caused huge economic losses to the pig industry, with 100% mortality in piglets aged 2 weeks and intestinal injury in pigs of other ages. However, there is still a shortage of safe and effective anti-TGEV drugs in clinics. In this study, phloretin, a naturally occurring dihydrochalcone glycoside, was identified as a potent antagonist of TGEV. Specifically, we found phloretin effectively inhibited TGEV proliferation in PK-15 cells, dose-dependently reducing the expression of TGEV N protein, mRNA, and virus titer. The anti-TGEV activity of phloretin was furthermore refined to target the internalization and replication stages. Moreover, we also found that phloretin could decrease the expression levels of proinflammatory cytokines induced by TGEV infection. In addition, we expanded the potential key targets associated with the anti-TGEV effect of phloretin to AR, CDK2, INS, ESR1, ESR2, EGFR, PGR, PPARG, PRKACA, and MAPK14 with the help of network pharmacology and molecular docking techniques. Furthermore, resistant viruses have been selected by culturing TGEV with increasing concentrations of phloretin. Resistance mutations were reproducibly mapped to the residue (S242) of main protease (Mpro). Molecular docking analysis showed that the mutation (S242F) significantly disrupted phloretin binding to Mpro, suggesting Mpro might be a potent target of phloretin. In summary, our findings indicate that phloretin is a promising drug candidate for combating TGEV, which may be helpful for developing pharmacotherapies for TGEV and other coronavirus infections.
Collapse
Affiliation(s)
- Yuting Duan
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, PR China
- Hubei Key Laboratory of Renal Disease Occurrence and Intervention, Medical School, Hubei Polytechnic University, Huangshi, PR China
- College of Life Science and Technology, Wuhan University of Bioengineering, Wuhan, PR China
| | - Haichuan Li
- College of Life Science and Technology, Wuhan University of Bioengineering, Wuhan, PR China
| | - Shuai Huang
- Center of Applied Biotechnology, Wuhan Institute of Bioengineering, Wuhan, PR China
| | - Yaoming Li
- College of Life Science and Technology, Wuhan University of Bioengineering, Wuhan, PR China
| | - Shuyi Chen
- College of Life Science and Technology, Wuhan University of Bioengineering, Wuhan, PR China
| | - Lilan Xie
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, PR China
- Hubei Key Laboratory of Renal Disease Occurrence and Intervention, Medical School, Hubei Polytechnic University, Huangshi, PR China
- Center of Applied Biotechnology, Wuhan Institute of Bioengineering, Wuhan, PR China
| |
Collapse
|
2
|
Selvaraj C, Dinesh DC, Krafcikova P, Boura E, Aarthy M, Pravin MA, Singh SK. Structural Understanding of SARS-CoV-2 Drug Targets, Active Site Contour Map Analysis and COVID-19 Therapeutics. Curr Mol Pharmacol 2021; 15:418-433. [PMID: 34488601 DOI: 10.2174/1874467214666210906125959] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 03/11/2021] [Accepted: 03/17/2021] [Indexed: 11/22/2022]
Abstract
The most iconic word of the year 2020 is 'COVID-19', the shortened name for coronavirus disease 2019. The pandemic, caused by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), is responsible for multiple worldwide lockdowns, an economic crisis, and a substantial increase in hospitalizations for viral pneumonia along with respiratory failure and multiorgan dysfunctions. Recently, the first few vaccines were approved by World Health Organization (WHO) and can eventually save millions of lives. Even though, few emergency use drugs like Remdesivir and several other repurposed drugs, still there is no approved drug for COVID-19. The coronaviral encoded proteins involved in host-cell entry, replication, and host-cell invading mechanism are potentially therapeutic targets. This perspective review provides the molecular overview of SARS-CoV-2 life cycle for summarizing potential drug targets, structural insights, active site contour map analyses of those selected SARS-CoV-2 protein targets for drug discovery, immunology, and pathogenesis.
Collapse
Affiliation(s)
- Chandrabose Selvaraj
- Computer Aided Drug Design and Molecular Modeling Lab, Department of Bioinformatics, Science Block, Alagappa University, Karaikudi-630004, Tamil Nadu. India
| | | | - Petra Krafcikova
- Institute of Organic Chemistry and Biochemistry AS CR, v.v.i., Flemingovo nam. 2, 166 10 Prague 6. Czech Republic
| | - Evzen Boura
- Institute of Organic Chemistry and Biochemistry AS CR, v.v.i., Flemingovo nam. 2, 166 10 Prague 6. Czech Republic
| | - Murali Aarthy
- Computer Aided Drug Design and Molecular Modeling Lab, Department of Bioinformatics, Science Block, Alagappa University, Karaikudi-630004, Tamil Nadu. India
| | - Muthuraja Arun Pravin
- Computer Aided Drug Design and Molecular Modeling Lab, Department of Bioinformatics, Science Block, Alagappa University, Karaikudi-630004, Tamil Nadu. India
| | - Sanjeev Kumar Singh
- Computer Aided Drug Design and Molecular Modeling Lab, Department of Bioinformatics, Science Block, Alagappa University, Karaikudi-630004, Tamil Nadu. India
| |
Collapse
|
3
|
Li Y, Wang J, Liu Y, Luo X, Lei W, Xie L. Antiviral and virucidal effects of curcumin on transmissible gastroenteritis virus in vitro. J Gen Virol 2020; 101:1079-1084. [PMID: 32677610 DOI: 10.1099/jgv.0.001466] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Emerging coronaviruses represent serious threats to human and animal health worldwide, and no approved therapeutics are currently available. Here, we used Transmissible gastroenteritis virus (TGEV) as the alpha-coronavirus model, and investigated the antiviral properties of curcumin against TGEV. Our results demonstrated that curcumin strongly inhibited TGEV proliferation and viral protein expression in a dose-dependent manner. We also observed that curcumin exhibited direct virucidal abilities in a dose-, temperature- and time-dependent manner. Furthermore, time-of-addition assays showed that curcumin mainly acted in the early phase of TGEV replication. Notably, in an adsorption assay, curcumin at 40 µM resulted in a reduction in viral titres of 3.55 log TCID50 ml-1, indicating that curcumin possesses excellent inhibitory effects on the adsorption of TGEV. Collectively, we demonstrate for the first time that curcumin has virucidal activity and virtual inhibition against TGEV, suggesting that curcumin might be a candidate drug for effective control of TGEV infection.
Collapse
Affiliation(s)
- Yaoming Li
- Hubei Engineering Research Center of Viral Vector, Applied Biotechnology Research Center, Wuhan University of Bioengineering, Wuhan 30415, PR China
| | - Jing Wang
- Hubei Engineering Research Center of Viral Vector, Applied Biotechnology Research Center, Wuhan University of Bioengineering, Wuhan 30415, PR China
| | - Yinchuan Liu
- Hubei Engineering Research Center of Viral Vector, Applied Biotechnology Research Center, Wuhan University of Bioengineering, Wuhan 30415, PR China
| | - Xiang Luo
- Hubei Engineering Research Center of Viral Vector, Applied Biotechnology Research Center, Wuhan University of Bioengineering, Wuhan 30415, PR China
| | - Weiqiang Lei
- Hubei Engineering Research Center of Viral Vector, Applied Biotechnology Research Center, Wuhan University of Bioengineering, Wuhan 30415, PR China
| | - Lilan Xie
- Hubei Engineering Research Center of Viral Vector, Applied Biotechnology Research Center, Wuhan University of Bioengineering, Wuhan 30415, PR China
| |
Collapse
|
4
|
Skariyachan S, Challapilli SB, Packirisamy S, Kumargowda ST, Sridhar VS. Recent Aspects on the Pathogenesis Mechanism, Animal Models and Novel Therapeutic Interventions for Middle East Respiratory Syndrome Coronavirus Infections. Front Microbiol 2019; 10:569. [PMID: 30984127 PMCID: PMC6448012 DOI: 10.3389/fmicb.2019.00569] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Accepted: 03/05/2019] [Indexed: 12/17/2022] Open
Abstract
Middle East Respiratory Syndrome Coronavirus (MERS-CoV) is an emerging zoonotic virus considered as one of the major public threat with a total number of 2 298 laboratory-confirmed cases and 811 associated deaths reported by World Health Organization as of January 2019. The transmission of the virus was expected to be from the camels found in Middle Eastern countries via the animal and human interaction. The genome structure provided information about the pathogenicity and associated virulent factors present in the virus. Recent studies suggested that there were limited insight available on the development of novel therapeutic strategies to induce immunity against the virus. The severities of MERS-CoV infection highlight the necessity of effective approaches for the development of various therapeutic remedies. Thus, the present review comprehensively and critically illustrates the recent aspects on the epidemiology of the virus, the structural and functional features of the viral genome, viral entry and transmission, major mechanisms of pathogenesis and associated virulent factors, current animal models, detection methods and novel strategies for the development of vaccines against MERS-CoV. The review further illustrates the molecular and computational virtual screening platforms which provide insights for the identification of putative drug targets and novel lead molecules toward the development of therapeutic remedies.
Collapse
Affiliation(s)
- Sinosh Skariyachan
- R&D Centre, Department of Biotechnology, Dayananda Sagar College of Engineering, Bengaluru, India
| | | | - Swathi Packirisamy
- R&D Centre, Department of Biotechnology, Dayananda Sagar College of Engineering, Bengaluru, India
| | | | - Vaishnavi Sneha Sridhar
- R&D Centre, Department of Biotechnology, Dayananda Sagar College of Engineering, Bengaluru, India
| |
Collapse
|