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Mycoplasmas regulate HIV-LTR-dependent gene expression

R Nir-Paz1, S Israel, A Honigman

  • 1Department of Membrane, Hebrew University-Hadassah Medical School, Jerusalem, Israel.

FEMS Microbiology Letters
|April 15, 1995
PubMed
Summary
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Mycoplasmas may activate Human Immunodeficiency Virus (HIV) replication. This study found that mycoplasma membranes play a role in activating HIV transcription, potentially impacting HIV infection progression.

Area of Science:

  • Infectious Diseases
  • Molecular Biology
  • Virology

Background:

  • Mycoplasmas are implicated in facilitating Human Immunodeficiency Virus (HIV) infection and Acquired Immunodeficiency Syndrome (AIDS) progression.
  • The precise mechanisms by which mycoplasmas influence HIV pathogenesis remain incompletely understood.

Purpose of the Study:

  • To investigate the potential role of mycoplasmas in the activation of HIV transcription.
  • To determine if mycoplasma infection can modulate the expression of HIV-related genes.

Main Methods:

  • Utilized two cell lines: 293 fibroblasts and Jurkat CD4+ T-cells.
  • Cells were transfected with plasmids containing a fusion construct of HIV-long terminal repeat (HIV-LTR) linked to reporter genes (luc or cat).
  • Infected cell lines with various mycoplasma species (M. fermentans, M. penetrans, M. pirum, Ureaplasma urealyticum) and monitored reporter gene expression.

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Main Results:

  • Infection with several mycoplasma species led to altered reporter gene expression.
  • Data indicate that mycoplasmas, particularly their membranes, are involved in the activation of HIV-LTR mediated transcription.

Conclusions:

  • Mycoplasmas possess the capability to activate HIV transcription.
  • Mycoplasma membranes are identified as a key component in the activation of HIV-LTR.
  • These findings suggest a significant role for mycoplasmas in modulating HIV activity and disease progression.