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Veterinary microbiology2009; 141(1-2); 12-21; doi: 10.1016/j.vetmic.2009.07.035

Equine herpesvirus type 1 (EHV-1) utilizes microtubules, dynein, and ROCK1 to productively infect cells.

Abstract: To initiate infection, equine herpesvirus type 1 (EHV-1) attaches to heparan sulfate on cell surfaces and then interacts with a putative glycoprotein D receptor(s). After attachment, virus entry occurs either by direct fusion of the virus envelope with the plasma membrane or via endocytosis followed by fusion between the virus envelope and an endosomal membrane. Upon fusion, de-enveloped virus particles are deposited into the cytoplasm and travel to the nucleus for viral replication. In this report, we examined the mechanism of EHV-1 intracellular trafficking and investigated the ability of EHV-1 to utilize specific cellular components to efficiently travel to the nucleus post-entry. Using a panel of microtubule-depolymerizing drugs and inhibitors of microtubule motor proteins, we show that EHV-1 infection is dependent on both the integrity of the microtubule network and the minus-end microtubule motor protein, dynein. In addition, we show that EHV-1 actively induces the acetylation of tubulin, a marker of microtubule stabilization, as early as 15 min post-infection. Finally, our data support a role for the cellular kinase, ROCK1, in virus trafficking to the nucleus.
Publication Date: 2009-08-08 PubMed ID: 19713056PubMed Central: PMC2819619DOI: 10.1016/j.vetmic.2009.07.035Google Scholar: Lookup
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  • Journal Article
  • Research Support
  • N.I.H.
  • Extramural

Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

The research article is about how the equine herpesvirus type 1 (EHV-1) uses certain cell components to efficiently infect cells. It shows that EHV-1 infection relies on the microtubule structure and the protein dynein, and suggests that the cellular kinase, ROCK1, also plays a part in virus trafficking to the cell’s nucleus.

Background of the Study

  • The focus of the research is the equine herpesvirus type 1 (EHV-1) and its mechanism of infection in cells.
  • The authors explain how EHV-1 initially connects to cell surfaces by attaching to heparan sulfate and then engages with a presumed glycoprotein D receptor(s).
  • The entry of the virus into the cell can occur through direct fusion of the virus envelope with the plasma membrane or via endocytosis, followed by fusion between the virus envelope and an endosomal membrane.
  • Once fusion occurs, the virus particles are deposited into the cytoplasm and move towards the nucleus for viral replication.

Details of the Study and Findings

  • The study investigates the EHV-1 intracellular trafficking mechanism and how the virus leverages specific cellular components for efficient transport to the nucleus post-entry.
  • For this purpose, the researchers used a range of microtubule-depolymerizing medications and inhibitors of microtubule motor proteins.
  • The researchers found that EHV-1 infection is dependent on both the integrity of the microtubule network and the minus-end microtubule motor protein known as dynein.
  • Notably, the researchers showed that EHV-1 actively contributes to the acetylation of tubulin, a marker of microtubule stabilization, as early as 15 minutes post-infection.

Role of ROCK1 in Viral Infection

  • The authors’ data indicates a potential role for the cellular kinase, ROCK1, in virus trafficking to the nucleus.
  • ROCK1 could be another critical factor in how EHV-1 infects cells, though the exact mechanism by which it contributes is not clearly spelled out in the abstract and requires further research.

Conclusion

  • This study sheds light on the role of various cell components in the infection process of EHV-1.
  • It provides foundational knowledge on how viruses can “hijack” cellular components for their replication, catalysts for potential therapeutic interventions targeting these processes.

Cite This Article

APA
Frampton AR, Uchida H, von Einem J, Goins WF, Grandi P, Cohen JB, Osterrieder N, Glorioso JC. (2009). Equine herpesvirus type 1 (EHV-1) utilizes microtubules, dynein, and ROCK1 to productively infect cells. Vet Microbiol, 141(1-2), 12-21. https://doi.org/10.1016/j.vetmic.2009.07.035

Publication

ISSN: 1873-2542
NlmUniqueID: 7705469
Country: Netherlands
Language: English
Volume: 141
Issue: 1-2
Pages: 12-21

Researcher Affiliations

Frampton, Arthur R
  • Department of Microbiology and Molecular Genetics, University of Pittsburgh, School of Medicine, Pittsburgh, PA 15261, United States. framptona@uncw.edu
Uchida, Hiroaki
    von Einem, Jens
      Goins, William F
        Grandi, Paola
          Cohen, Justus B
            Osterrieder, Nikolaus
              Glorioso, Joseph C

                MeSH Terms

                • Acetylation
                • Animals
                • Blotting, Western
                • CHO Cells
                • Cell Line
                • Cricetinae
                • Cricetulus
                • Dyneins / metabolism
                • Herpesvirus 1, Equid / genetics
                • Herpesvirus 1, Equid / metabolism
                • Herpesvirus 1, Equid / pathogenicity
                • Horses
                • Microscopy, Confocal
                • Microtubules / metabolism
                • Rabbits
                • Tubulin / metabolism
                • rho-Associated Kinases / metabolism

                Grant Funding

                • R01 CA119298 / NCI NIH HHS
                • U01 HL066949-050003 / NHLBI NIH HHS
                • NS040923 / NINDS NIH HHS
                • CA119298 / NCI NIH HHS
                • P01 NS040923 / NINDS NIH HHS
                • P01 NS040923-070006 / NINDS NIH HHS
                • R01 CA119298-04 / NCI NIH HHS
                • R01 NS044323 / NINDS NIH HHS
                • U01 HL066949 / NHLBI NIH HHS
                • NS44323 / NINDS NIH HHS
                • R01 NS044323-04 / NINDS NIH HHS
                • HL066949 / NHLBI NIH HHS

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