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Background: Hepatitis C virus (HCV) is an enveloped and positive-stranded RNA virus that is a major causative agent of chronic liver diseases worldwide. HCV has become the main cause of liver transplantations and there is no effective drug for all hepatitis genotypes. Elucidation of the life cycle and non-structural proteins of HCV, involved in viral replication, are attractive targets for the development of antiviral drugs..
Methods: In this work, pharmacoinformatics approaches coupled with docking analyses were applied on HCV non-structural proteins to identify the novel potential hits and HCV drugs. Molecular docking analyses were carried out on HCV-approved drugs, followed by the ligandbased pharmacophore generation to screen the antiviral libraries for novel potential hits.
Results: Virtual screening technique has top-ranked five novel compounds (ZINC00607900, ZINC03635748, ZINC03875543, ZINC04097464, and ZINC12503102) along with their least binding energies (-8.0 kcal/mol, -6.1 kcal/mol, -7.5 kcal/mol, -7.4 kcal/mol, and -7.3 kcal/mol, respectively) and stability with the non-structural proteins target.
Conclusion: These promising hits exhibited better absorption and ADMET properties as compared to the selected drug molecules. These potential compounds extracted from in silico approach may be significant in drug design and development against Hepatitis and other liver diseases.
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http://dx.doi.org/10.2174/1386207324666210217144306 | DOI Listing |
Mol Immunol
September 2025
School of Pharmaceutical Science and Technology, Faculty of Medicine, Tianjin University, Tianjin, China; State Key Laboratory of Druggability Evaluation and Systematic Translational Medicine (Tianjin Institute of Pharmaceutical Research), China. Electronic address:
Severe Fever with Thrombocytopenia Syndrome (SFTS), caused by the novel phlebovirus SFTSV (SFTS bunyavirus), was first identified in 2009 across several Chinese provinces, with a case fatality rate reaching 30 %. Given its compact genome, SFTSV critically depends on host cellular machinery for replication and pathogenesis. In this study, we employed a systematic strategy combining co-immunoprecipitation of viral-host complexes with formaldehyde crosslinking and affinity purification-mass spectrometry (AP-MS) to comprehensively map SFTSV-host interactions.
View Article and Find Full Text PDFNat Commun
September 2025
CSSB Centre for Structural Systems Biology, Deutsches Elektronen Synchroton DESY, Leibniz Institute of Virology, University of Lübeck, Hamburg, Germany.
In coronavirus (CoV) infection, polyproteins (pp1a/pp1ab) are processed into non-structural proteins (nsps), which largely form the replication/transcription complex (RTC). The polyprotein processing and complex formation is critical and offers potential therapeutic targets. However, the interplay of polyprotein processing and RTC-assembly remains poorly understood.
View Article and Find Full Text PDFVet Microbiol
September 2025
Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China; Shanghai Key Laboratory of Veterinary Biotechnology, Shanghai 200240, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou Unive
Bovine coronavirus (BCoV), a member of the Betacoronavirus genus, causes severe calf gastroenteritis and respiratory disease, resulting in a significant loss of livestock. Coronavirus non-structural protein 14 (nsp14) is involved in viral RNA replication and modification and subverts host immune regulatory pathways to facilitate immune evasion. In this study, we demonstrated that BCoV nsp14 mediates TNF receptor-associated factor 3 (TRAF3) degradation through the coordinated targeting of the ubiquitin-proteasome and autophagy-lysosomal pathways, thereby potentiating viral replication.
View Article and Find Full Text PDFPLoS Pathog
September 2025
Institut de Chimie des Substances Naturelles, CNRS, Université Paris-Saclay, Gif-sur-Yvette, France.
Respiratory syncytial virus (RSV), the most common cause of bronchiolitis and pneumonia in infants, elicits a remarkably weak innate immune response. This is partly due to type I interferon (IFN) antagonism by the non-structural RSV NS1 protein. It was recently suggested that NS1 could modulate host transcription via an interaction with the MED25 subunit of the Mediator complex.
View Article and Find Full Text PDFJ Virol
September 2025
Laboratory of Ultrastructural Virology, Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan.
Double-stranded RNA (dsRNA), which induces an innate immune response against viral infections, is rarely detected in influenza A virus (IAV)-infected cells. Nevertheless, we previously reported that the influenza A viral ribonucleoprotein (vRNP) complex generates looped dsRNAs during RNA synthesis . This finding suggests that IAV possesses a specific mechanism for sequestering dsRNA within infected cells, thereby enabling viral evasion of the innate immune response.
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