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Related Experiment Videos

Retroviruses: ancient and modern.

R A Weiss1, D Griffiths, Y Takeuchi

  • 1Institute of Cancer Research, London, U.K.

Archives of Virology. Supplementum
|September 2, 1999
PubMed
Summary

This study characterizes novel retroviruses in humans and pigs. Human retrovirus 5 (HRV-5) is linked to autoimmune diseases, while porcine endogenous retroviruses (PERV) pose risks for xenotransplantation.

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Area of Science:

  • Virology
  • Genetics
  • Immunology
  • Transplantation Science

Background:

  • Retroviruses transmit via infectious virions or integrated endogenous proviral DNA.
  • Human endogenous retroviral genomes are ancient, while infectious viruses like HIV are recent zoonotic transmissions.
  • Understanding novel retroviruses is crucial for human health and medical advancements.

Purpose of the Study:

  • To characterize newly identified retroviruses in humans and pigs.
  • To investigate the association of Human Retrovirus 5 (HRV-5) with autoimmune conditions.
  • To assess the implications of Porcine Endogenous Retroviruses (PERV) for xenotransplantation.

Main Methods:

  • Characterization of novel retroviral genomes in human and porcine DNA.
  • Detection assays for HRV-5 in patients with arthritis and systemic lupus erythematosus.
  • Analysis of PERV activation and infectivity for human cells.

Main Results:

  • Human Retrovirus 5 (HRV-5) detected as an exogenous genome associated with arthritis and systemic lupus erythematosus.
  • Porcine Endogenous Retroviruses (PERV) are present in swine DNA.
  • PERV can be activated to produce virions infectious to human cells.

Conclusions:

  • HRV-5 represents a novel human retrovirus potentially implicated in autoimmune diseases.
  • PERV transmission from pigs to humans is a significant concern for xenotransplantation safety.
  • Further research into HRV-5 and PERV is warranted for clinical and translational applications.

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