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Molecular regulation of JC virus tropism: insights into potential therapeutic targets for progressive multifocal

Leslie J Marshall1, Eugene O Major

  • 1Laboratory of Molecular Medicine and Neuroscience, Molecular Medicine and Virology Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, 10 Center Drive, Building 10 Room 3B14 MSC 1295, Bethesda, MD 20892-1296, USA. marshalllj@ninds.nih.gov

Journal of Neuroimmune Pharmacology : the Official Journal of the Society on Neuroimmune Pharmacology
|April 20, 2010
PubMed

Insights

Progressive multifocal leukoencephalopathy (PML) is a serious risk for patients on immunomodulatory therapies. Understanding JC virus (JCV) infection in immune cells is crucial for developing effective treatments for PML.

Area of Science:

  • Neuroimmunology
  • Virology
  • Oncology

Background:

  • Progressive multifocal leukoencephalopathy (PML) is an opportunistic infection posing a significant risk to patients undergoing immunomodulatory therapies for autoimmune diseases like multiple sclerosis.
  • Currently, no approved treatments effectively alter PML disease progression in patients.
  • The human polyoma virus JC (JCV) is the causative agent of PML, with infection often occurring in childhood and establishing latency in lymphoid cells.

Purpose of the Study:

  • To investigate the mechanisms of JC virus (JCV) dissemination and gene expression regulation.
  • To explore the link between immune system modulation and the development of PML.
  • To identify potential new therapeutic targets for PML.

Main Methods:

  • Analysis of JCV gene expression regulation by cellular transcription factors in permissive cells.
  • Examination of JCV latency and maintenance in lymphoid cells.
  • Correlation of PML development with immune suppression (e.g., hematological malignancies, AIDS, monoclonal antibody treatments).

Main Results:

  • JCV dissemination is controlled by viral gene expression regulation via cellular transcription factors.
  • Latent JCV with PML-associated promoter sequences is maintained in bone marrow lymphoid cells.
  • PML development is strongly associated with immune system suppression or modulation.

Conclusions:

  • Understanding JCV's course in immune cells is essential for comprehending PML pathogenesis.
  • Further research into JCV infection dynamics in immune cells may reveal novel therapeutic strategies for PML.
  • Targeting JCV mechanisms within immune cells offers a promising avenue for PML treatment development.

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