Porcine deltacoronavirus (PDCoV) is a newly emerged enteric virus threatening pig industries worldwide. Our previous work showed that PDCoV enters porcine kidney (PK-15) cells through a caveolae-dependent pathway, but the entry mechanism for PDCoV into swine testicle (ST) cells remains unclear. Mechanisms of virus entry can be different with different virus isolates and cell types. Here, we determined that PDCoV enters ST cells via clathrin-mediated endocytosis. Additionally, we found that PDCoV entry does not require Rab5, Rab7, or Rab11. These findings provide additional understanding of the entry mechanisms of PDCoV and possible antiviral targets.
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http://dx.doi.org/10.1128/spectrum.02553-23 | DOI Listing |
RSC Med Chem
December 2024
State Key Laboratory of New Drug and Pharmaceutical Process, Shanghai Institute of Pharmaceutical Industry Co., Ltd. Shanghai 201203 China
Viral infections trigger the integrated stress response (ISR) in eukaryotic cells that leads to the activation of eIF2α kinases, the elevation of eukaryotic translation initiation factor 2α (eIF2α) phosphorylation, and thereby the shutdown of global protein synthesis that viruses rely on to replicate. Coronaviruses and other viruses have evolved various subversion mechanisms to counteract the antiviral ISR. These intricate host-virus interactions may be exploited by pharmacologically activating the host ISR for the development of host-directed antivirals (HDAs), an increasingly relevant area of research.
View Article and Find Full Text PDFSheng Wu Gong Cheng Xue Bao
December 2024
College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, Jiangxi, China.
Porcine deltacoronavirus (PDCoV) is a major pathogen causing fatal diarrhea in suckling piglets, and there is currently a lack of effective vaccines and drugs to prevent and control the virus. The nonstructural protein 13 (NSP13) serves as a virus-coded helicase and is considered to be a crucial target for antiviral drugs, making it imperative to investigate the helicase activity of NSP13. In this study, the gene of PDCoV was synthesized and integrated into the prokaryotic expression vector pET-28a to construct the recombinant plasmid pET-28a-NSP13.
View Article and Find Full Text PDFInt J Biol Macromol
December 2024
Research Center for Swine Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu 611130, China; National Animal Experiments Teaching Demonstration Center, Sichuan Agricultural University, Chengdu 611130, China; International joint Research Center for Animal Disease Prevention and control of Sichuan Province, Chengdu 611130, China. Electronic address:
Porcine deltacoronavirus (PDCoV) is a swine enteropathogenic coronavirus that causes severe diarrhea in piglets, the development of novel vaccines is of great value in the prevention and control of PDCoV. Here, we selected attenuated Salmonella typhimurium SL7207 to deliver pVAX1-S1, resulting in the oral vaccine strain, SL7207 (pVAX1-S1). In immunized mice, SL7207 (pVAX1-S1) induced PDCoV-specific humoral IgG, IgA, neutralizing antibodies, mucosal sIgA, up-regulation of CD8 T cells, and increased levels of Th1 cytokines (IFN-γ and IL-2).
View Article and Find Full Text PDFFront Immunol
December 2024
Institute of Critical Care Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, China.
Porcine deltacoronavirus (PDCoV), a newly discovered intestinal coronavirus, has rapidly spread among pigs worldwide and has shown the potential for cross-species infection. However, the interaction mechanism between PDCoV and the host's antiviral response is still poorly understood. In this study, an E3 ubiquitin ligase FBXW8 was explored on PDCoV proliferation.
View Article and Find Full Text PDFInt J Biol Macromol
December 2024
Henan Provincial Engineering and Technology Center of Health Products for Livestock and Poultry, College of Life Science, Nanyang Normal University, Nanyang, Henan 473000, China. Electronic address:
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