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HERVs in neuropathogenesis.

Tove Christensen1

  • 1Department of Medical Microbiology and Immunology, University of Aarhus, Bartholin Building, Wilhelm Meyers Allé 4, 8000, Aarhus C, Denmark. tc@microbiology.au.dk

Journal of Neuroimmune Pharmacology : the Official Journal of the Society on Neuroimmune Pharmacology
|April 28, 2010
PubMed
Summary
This summary is machine-generated.

Human endogenous retroviruses (HERVs) are emerging pathogens linked to neurological diseases like MS and schizophrenia. Interferon beta (IFN-beta) therapy shows promise in down-regulating HERV activity in multiple sclerosis patients.

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Area of Science:

  • Virology
  • Neuroimmunology
  • Genetics

Background:

  • Exogenous retroviruses cause human immunodeficiency and neurological diseases.
  • Endogenous retroviruses (HERVs) are increasingly recognized as emerging human pathogens.
  • HERVs interact with exogenous retroviruses and herpesviruses, influencing disease.

Purpose of the Study:

  • To investigate the association of HERVs with neurological disorders, specifically multiple sclerosis (MS) and schizophrenia.
  • To explore the role of HERV activation in disease pathogenesis.
  • To evaluate the impact of Interferon beta (IFN-beta) therapy on HERV expression in MS.

Main Methods:

  • Analysis of HERV (HERV-H/F, HERV-W, HERV-K) transcription and protein expression in circulation and central nervous system (CNS) of patients.
  • Assessment of anti-HERV-W Gag reactive epitopes in schizophrenia patients.
  • Review of existing data on IFN-beta's anti-retroviral and HERV-downregulating activities.

Main Results:

  • HERV-H/F and HERV-W activation, particularly env transcription and Env proteins, strongly correlate with disease activity in a majority of MS patients.
  • IFN-beta therapy effectively down-regulates HERV-H/F and HERV-W in MS patients, consistent with its anti-retroviral properties.
  • HERV-W and HERV-K (gag and pol) are upregulated in the circulation and CNS of schizophrenia patients, with altered anti-HERV-W Gag epitope expression.

Conclusions:

  • HERVs, especially HERV-W and HERV-H/F, are implicated as emerging pathogens in MS and schizophrenia.
  • IFN-beta demonstrates therapeutic potential by down-regulating HERV activity in MS.
  • Further research into the pathogenic potential of HERVs is warranted due to their complex roles in neurological diseases.