Identification of Host–Protein Interaction Network of Canine Parvovirus Capsid Protein VP2 in F81 Cells

Canine Parvovirus (CPV) is a highly contagious virus that causes severe hemorrhagic enteritis and myocarditis, posing a major threat to the life and health of dogs. The molecular mechanism by which VP2, the major capsid protein of CPV, infects host cells and utilizes host cell proteins for self-repl...

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Main Authors: Hongzhuan Zhou, Huanhuan Zhang, Xia Su, Fuzhou Xu, Bing Xiao, Jin Zhang, Qi Qi, Lulu Lin, Kaidi Cui, Qinqin Li, Songping Li, Bing Yang
Format: Article
Language:English
Published: MDPI AG 2025-01-01
Series:Microorganisms
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Online Access:https://www.mdpi.com/2076-2607/13/1/88
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author Hongzhuan Zhou
Huanhuan Zhang
Xia Su
Fuzhou Xu
Bing Xiao
Jin Zhang
Qi Qi
Lulu Lin
Kaidi Cui
Qinqin Li
Songping Li
Bing Yang
author_facet Hongzhuan Zhou
Huanhuan Zhang
Xia Su
Fuzhou Xu
Bing Xiao
Jin Zhang
Qi Qi
Lulu Lin
Kaidi Cui
Qinqin Li
Songping Li
Bing Yang
author_sort Hongzhuan Zhou
collection DOAJ
description Canine Parvovirus (CPV) is a highly contagious virus that causes severe hemorrhagic enteritis and myocarditis, posing a major threat to the life and health of dogs. The molecular mechanism by which VP2, the major capsid protein of CPV, infects host cells and utilizes host cell proteins for self-replication remains poorly understood. In this study, 140 host proteins specifically binding to CPV VP2 protein were identified by immunoprecipitation combined with liquid chromatography–mass spectrometry (LC-MS/MS). Subsequently, the protein Interaction Network (PPI), the annotation of gene ontology (GO) and the database of Kyoto Encyclopedia of Genes and Genomes (KEGG) were constructed for in-depth analysis. The results showed that CPV VP2 protein participated mainly in cell metabolism, cell biosynthesis, protein folding and various signal transduction processes. According to the results of proteomics analysis, we randomly selected seven proteins for co-immunoprecipitation verification, and the experimental results were consistent with the LC-MS/MS data. In addition, our study found that the expression level of the VP2-interacting protein FHL2 mediated CPV replication. Preliminary studies have shown that knockdown of FHL2 promotes CPV replication by decreasing the expression of interferon β (IFN-β) and interferon-stimulated genes (ISGs), while overexpression of FHL2 can inhibit the replication of CPV by up-regulating the expression of IFN-β and related ISGs. This study lays the foundation for elucidating the potential function of CPV VP2 protein in the process of viral infection and proliferation which provides a theoretical basis for the design of antiviral agents and vaccines.
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spelling doaj-art-94ea8b29d133450bbbc92c24b8fb0bbf2025-01-24T13:42:36ZengMDPI AGMicroorganisms2076-26072025-01-011318810.3390/microorganisms13010088Identification of Host–Protein Interaction Network of Canine Parvovirus Capsid Protein VP2 in F81 CellsHongzhuan Zhou0Huanhuan Zhang1Xia Su2Fuzhou Xu3Bing Xiao4Jin Zhang5Qi Qi6Lulu Lin7Kaidi Cui8Qinqin Li9Songping Li10Bing Yang11Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, In-Stitute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, ChinaBeijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, In-Stitute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, ChinaBeijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, In-Stitute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, ChinaBeijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, In-Stitute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, ChinaBeijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, In-Stitute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, ChinaBeijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, In-Stitute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, ChinaBeijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, In-Stitute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, ChinaBeijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, In-Stitute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, ChinaBeijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, In-Stitute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, ChinaBeijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, In-Stitute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, ChinaBeijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, In-Stitute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, ChinaBeijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, In-Stitute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, ChinaCanine Parvovirus (CPV) is a highly contagious virus that causes severe hemorrhagic enteritis and myocarditis, posing a major threat to the life and health of dogs. The molecular mechanism by which VP2, the major capsid protein of CPV, infects host cells and utilizes host cell proteins for self-replication remains poorly understood. In this study, 140 host proteins specifically binding to CPV VP2 protein were identified by immunoprecipitation combined with liquid chromatography–mass spectrometry (LC-MS/MS). Subsequently, the protein Interaction Network (PPI), the annotation of gene ontology (GO) and the database of Kyoto Encyclopedia of Genes and Genomes (KEGG) were constructed for in-depth analysis. The results showed that CPV VP2 protein participated mainly in cell metabolism, cell biosynthesis, protein folding and various signal transduction processes. According to the results of proteomics analysis, we randomly selected seven proteins for co-immunoprecipitation verification, and the experimental results were consistent with the LC-MS/MS data. In addition, our study found that the expression level of the VP2-interacting protein FHL2 mediated CPV replication. Preliminary studies have shown that knockdown of FHL2 promotes CPV replication by decreasing the expression of interferon β (IFN-β) and interferon-stimulated genes (ISGs), while overexpression of FHL2 can inhibit the replication of CPV by up-regulating the expression of IFN-β and related ISGs. This study lays the foundation for elucidating the potential function of CPV VP2 protein in the process of viral infection and proliferation which provides a theoretical basis for the design of antiviral agents and vaccines.https://www.mdpi.com/2076-2607/13/1/88CPVVP2protein interaction networkFHL2
spellingShingle Hongzhuan Zhou
Huanhuan Zhang
Xia Su
Fuzhou Xu
Bing Xiao
Jin Zhang
Qi Qi
Lulu Lin
Kaidi Cui
Qinqin Li
Songping Li
Bing Yang
Identification of Host–Protein Interaction Network of Canine Parvovirus Capsid Protein VP2 in F81 Cells
Microorganisms
CPV
VP2
protein interaction network
FHL2
title Identification of Host–Protein Interaction Network of Canine Parvovirus Capsid Protein VP2 in F81 Cells
title_full Identification of Host–Protein Interaction Network of Canine Parvovirus Capsid Protein VP2 in F81 Cells
title_fullStr Identification of Host–Protein Interaction Network of Canine Parvovirus Capsid Protein VP2 in F81 Cells
title_full_unstemmed Identification of Host–Protein Interaction Network of Canine Parvovirus Capsid Protein VP2 in F81 Cells
title_short Identification of Host–Protein Interaction Network of Canine Parvovirus Capsid Protein VP2 in F81 Cells
title_sort identification of host protein interaction network of canine parvovirus capsid protein vp2 in f81 cells
topic CPV
VP2
protein interaction network
FHL2
url https://www.mdpi.com/2076-2607/13/1/88
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