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Yang P, Yuan Y, Sun Y, Lv B, Du H, Zhou Z, Yang Z, Liu X, Duan H, Shen C. The Host Protein CAD Regulates the Replication of FMDV through the Function of Pyrimidines' De Novo Synthesis. J Virol 2023; 97:e0036923. [PMID: 37162335 DOI: 10.1128/jvi.00369-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023] Open
Abstract
Foot-and-mouth disease virus (FMDV) is a single-stranded picornavirus that causes economically devastating disease in even-hooved animals. There has been little research on the function of host cells during FMDV infection. We aimed to shed light on key host factors associated with FMDV replication during acute infection. We found that HDAC1 overexpression in host cells induced upregulation of FMDV RNA and protein levels. Activation of the AKT-mammalian target of rapamycin (mTOR) signaling pathway using bpV(HOpic) or SC79 also promoted FMDV replication. Furthermore, short hairpin RNA (shRNA)-induced suppression of carbamoyl-phosphate synthetase 2, aspartate transcarbamylase, and dihydroorotase (CAD), a transcription factor downstream of the AKT-mTOR signaling pathway, resulted in downregulation of FMDV RNA and protein levels. Coimmunoprecipitation assays showed that the ACTase domain of CAD could interact with the FMDV 2C protein, suggesting that the ACTase domain of CAD may be critical in FMDV replication. CAD proteins participate in de novo pyrimidine synthesis. Inhibition of FMDV replication by deletion of the ACTase domain of CAD in host cells could be reversed by supplementation with uracil. These results revealed that the contribution of the CAD ACTase domain to FMDV replication is dependent on de novo pyrimidine synthesis. Our research shows that HDAC1 promotes FMDV replication by regulating de novo pyrimidine synthesis from CAD via the AKT-mTOR signaling pathway. IMPORTANCE Foot-and-mouth disease virus is an animal virus of the Picornaviridae family that seriously harms the development of animal husbandry and foreign trade of related products, and there is still a lack of effective means to control its harm. Replication complexes would generate during FMDV replication to ensure efficient replication cycles. 2C is a common viral protein in the replication complex of Picornaviridae virus, which is thought to be an essential component of membrane rearrangement and viral replication complex formation. The host protein CAD is a key protein in the pyrimidines de novo synthesis. In our research, the interaction of CAD and FMDV 2C was demonstrated in FMDV-infected BHK-21 cells, and it colocalized with 2C in the replication complex. The inhibition of the expression of FMDV 3D protein through interference with CAD and supplementation with exogenous pyrimidines reversed this inhibition, suggesting that FMDV might recruit CAD through the 2C protein to ensure pyrimidine supply during replication. In addition, we also found that FMDV infection decreased the expression of the host protein HDAC1 and ultimately inhibited CAD activity through the AKT-mTOR signaling pathway. These results revealed a unique means of counteracting the virus in BHK-21 cells lacking the interferon (IFN) signaling pathway. In conclusion, our study provides some potential targets for the development of drugs against FMDV.
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Affiliation(s)
- Pu Yang
- College of Life Sciences, Wuhan University, Wuhan, China
- China Center for Type Culture Collection, Wuhan University, Wuhan, China
| | - Yuncong Yuan
- College of Life Sciences, Wuhan University, Wuhan, China
- China Center for Type Culture Collection, Wuhan University, Wuhan, China
| | - Yidan Sun
- College of Life Sciences, Wuhan University, Wuhan, China
- China Center for Type Culture Collection, Wuhan University, Wuhan, China
| | - Bonan Lv
- College of Life Sciences, Wuhan University, Wuhan, China
- China Center for Type Culture Collection, Wuhan University, Wuhan, China
| | - Hang Du
- College of Life Sciences, Wuhan University, Wuhan, China
- China Center for Type Culture Collection, Wuhan University, Wuhan, China
| | - Zhou Zhou
- College of Life Sciences, Wuhan University, Wuhan, China
- China Center for Type Culture Collection, Wuhan University, Wuhan, China
| | - Zhuang Yang
- College of Life Sciences, Wuhan University, Wuhan, China
- China Center for Type Culture Collection, Wuhan University, Wuhan, China
| | - Xuemei Liu
- College of Life Sciences, Wuhan University, Wuhan, China
- China Center for Type Culture Collection, Wuhan University, Wuhan, China
| | - Huimin Duan
- College of Life Sciences, Wuhan University, Wuhan, China
- China Center for Type Culture Collection, Wuhan University, Wuhan, China
| | - Chao Shen
- College of Life Sciences, Wuhan University, Wuhan, China
- China Center for Type Culture Collection, Wuhan University, Wuhan, China
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Yang L, Chen H, Liu L, Song J, Feng T, Li Y, Shen C, Kong L, Xin X. Foot-and-mouth disease virus VP1 promotes viral replication by regulating the expression of chemokines and GBP1. Front Vet Sci 2022; 9:937409. [PMID: 35937300 PMCID: PMC9353127 DOI: 10.3389/fvets.2022.937409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 06/28/2022] [Indexed: 11/13/2022] Open
Abstract
Foot-and-mouth disease virus (FMDV) is an acute, highly contagious, and economically destructive pathogen of vesicular disease that affects domestic and wild cloven-hoofed animals. The FMDV VP1 protein is an important part of the nucleocapsid and plays a significant role during FMDV infection. However, the signal pathways mediated by VP1 in the life cycle of FMDV and the related mechanisms are not yet fully understood. Here, we performed RNA-seq to compare gene expression profiles between pCAGGS-HA-VP1 transfected PK-15 cells and pCAGGS-HA (empty vector) transfected PK-15 cells. The results showed 5,571 genes with significantly different expression levels, of which 2,981 were up-regulated and 2,590 were down-regulated. GO enrichment analysis showed that 51 GO terms were significantly enriched in cell components including protein complex, membrane and organelle part. KEGG enrichment analysis showed 11 KEGG pathways were significantly enriched which were mainly related to the immune system, infectious viral disease, and signal transduction. Among the up-regulated genes, the chemokines such as CCL5, CXCL8, and CXCL10 in turn promoted FMDV replication. In contrast, GBP1, an interferon-stimulated gene that was suppressed by VP1 and FMDV, could effectively inhibit FMDV replication. Our research provides a comprehensive overview of the response of host cells to VP1 protein and a basis for further research to understand the roles of VP1 in FMDV infection including the genes involved in FMDV replication.
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Affiliation(s)
- Li Yang
- Nanchang City Key Laboratory of Animal Virus and Genetic Engineering, Nanchang, China
- Institute of Pathogenic Microorganism, Jiangxi Agricultural University, Nanchang, China
- College of Bioscience and Engineering, Jiangxi Agricultural University, Nanchang, China
| | - Hong Chen
- Nanchang City Key Laboratory of Animal Virus and Genetic Engineering, Nanchang, China
- Institute of Pathogenic Microorganism, Jiangxi Agricultural University, Nanchang, China
- College of Bioscience and Engineering, Jiangxi Agricultural University, Nanchang, China
| | - Liqing Liu
- Nanchang City Key Laboratory of Animal Virus and Genetic Engineering, Nanchang, China
- Institute of Pathogenic Microorganism, Jiangxi Agricultural University, Nanchang, China
- College of Bioscience and Engineering, Jiangxi Agricultural University, Nanchang, China
| | - Jingjing Song
- Nanchang City Key Laboratory of Animal Virus and Genetic Engineering, Nanchang, China
- Institute of Pathogenic Microorganism, Jiangxi Agricultural University, Nanchang, China
- College of Bioscience and Engineering, Jiangxi Agricultural University, Nanchang, China
| | - Tian Feng
- Nanchang City Key Laboratory of Animal Virus and Genetic Engineering, Nanchang, China
- Institute of Pathogenic Microorganism, Jiangxi Agricultural University, Nanchang, China
- College of Bioscience and Engineering, Jiangxi Agricultural University, Nanchang, China
| | - Yihan Li
- Nanchang City Key Laboratory of Animal Virus and Genetic Engineering, Nanchang, China
- Institute of Pathogenic Microorganism, Jiangxi Agricultural University, Nanchang, China
- College of Bioscience and Engineering, Jiangxi Agricultural University, Nanchang, China
| | - Chao Shen
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, China
| | - Lingbao Kong
- Nanchang City Key Laboratory of Animal Virus and Genetic Engineering, Nanchang, China
- Institute of Pathogenic Microorganism, Jiangxi Agricultural University, Nanchang, China
- College of Bioscience and Engineering, Jiangxi Agricultural University, Nanchang, China
| | - Xiu Xin
- Nanchang City Key Laboratory of Animal Virus and Genetic Engineering, Nanchang, China
- Institute of Pathogenic Microorganism, Jiangxi Agricultural University, Nanchang, China
- College of Bioscience and Engineering, Jiangxi Agricultural University, Nanchang, China
- *Correspondence: Xiu Xin
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Yuan Y, Wang X, Li J, Han L, Du H, Sun Y, Yang P, Zhou Z, Gu M, Lu Y, Shen C. Single-Cell Sequencing Yields Insights in the Evolution of Foot-and-Mouth Disease Virus Persistent Infection. Front Cell Infect Microbiol 2022; 12:940906. [PMID: 35873170 PMCID: PMC9304859 DOI: 10.3389/fcimb.2022.940906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 06/07/2022] [Indexed: 11/13/2022] Open
Abstract
Foot-and-mouth disease virus (FMDV) could cause acute infection in host cells, or they could coexist with host cells to generate persistent infection. In persistent infection, the virus could survive for a long time in the host and could be transmitted between different host cells. In the case of FMDV-persistent infection cell line, there is a remarkable significant cellular heterogeneity in the FMDV-persistent infection cell line due to differences of viral load in the individual cells within the cell line. However, the mechanisms of FMDV-persistent infection are not well understood. It is now generally accepted that multiple factors contribute to the coevolution of viruses and cells during the course of persistent infection. The outcome would influence the development of persistent FMDV infection conjointly, reaching a state of equilibrium ultimately. Therefore, in order to elucidate the mechanism of cellular heterogeneity in FMDV-persistent infection cell line, single-cell sequencing was performed on BHK-Op, and pseudotime trajectory plot was draw through cell cluster. Based on the cell clusters, we predicted the development and progression of the FMDV-persistent infection. It could be well explained by the fact that, in BHK-Op cells, there are a fraction of infected cells and a fraction of virus-exposed but uninfected bystander cells. By further comparing the transcripts in cell clusters, we found that these genes were involved in changes in ribosome biogenesis, cell cycle, and intracellular signaling including the interferon signaling pathway and mitogen-activated protein kinase (MAPK) signaling pathway. Through comprehensive cross-tabulation analysis of differential expressed genes in various cluster of cells, we identified a high association of Fos, a downstream transcription factor of the MAPK/extracellular signal–regulated kinase (ERK) signaling pathway, with viral replication during the formation of FMDV-persistent infection. Through the further study of Fos, we found that downregulation of Fos facilitates viral clearance during FMDV-persistent infection. Upregulation of c-Raf, which is the upstream of the MAPK/ERK signaling pathway, could promote FMDV replication through downregulation of Fos. Our research is the first to provide insight into the mechanism of the formation FMDV-persistent infection through single-cell sequencing using persistent infection cell line. Pseudotime trajectory analysis was the first time to apply for FMDV-persistent infection cell line. Our work highlights the detailed overview of the evolution of FMDV-persistent infection. We also analyzed the differential expressed genes in the replication or elimination of FMDV within the host. We found that the MAPK/ERK signaling pathway and its downstream transcription factor Fos play an important role in FMDV-persistent infection.
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Affiliation(s)
- Yuncong Yuan
- College of Life Sciences, Wuhan University, Wuhan, China
- China Center for Type Culture Collection, Wuhan University, Wuhan, China
| | - Xingran Wang
- College of Life Sciences, Wuhan University, Wuhan, China
- China Center for Type Culture Collection, Wuhan University, Wuhan, China
| | - Jiadai Li
- College of Life Sciences, Wuhan University, Wuhan, China
- China Center for Type Culture Collection, Wuhan University, Wuhan, China
| | - Lingling Han
- College of Life Sciences, Wuhan University, Wuhan, China
- China Center for Type Culture Collection, Wuhan University, Wuhan, China
| | - Hang Du
- College of Life Sciences, Wuhan University, Wuhan, China
- China Center for Type Culture Collection, Wuhan University, Wuhan, China
| | - Yidan Sun
- College of Life Sciences, Wuhan University, Wuhan, China
- China Center for Type Culture Collection, Wuhan University, Wuhan, China
| | - Pu Yang
- College of Life Sciences, Wuhan University, Wuhan, China
- China Center for Type Culture Collection, Wuhan University, Wuhan, China
| | - Zhou Zhou
- College of Life Sciences, Wuhan University, Wuhan, China
- China Center for Type Culture Collection, Wuhan University, Wuhan, China
| | - Meijia Gu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, School of Pharmaceutical Sciences, Wuhan University, Wuhan, China
| | - Yang Lu
- College of Life Sciences, Wuhan University, Wuhan, China
| | - Chao Shen
- College of Life Sciences, Wuhan University, Wuhan, China
- China Center for Type Culture Collection, Wuhan University, Wuhan, China
- *Correspondence: Chao Shen,
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