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Rubella virus infection dysregulates the pattern of p63 expression

Krisztina Buzás1, András Miczák, Miklos Degré

  • 1Department of Medical Microbiology and Immunobiology, University of Szeged, Szeged, Hungary.

APMIS : Acta Pathologica, Microbiologica, Et Immunologica Scandinavica
|December 17, 2004
PubMed

Insights

Rubella virus (RV) infection alters the balance of p63 protein isoforms in cells. This dysregulation of p63, a key transcription factor, may contribute to the virus's cell-death-inducing effects.

Area of Science:

  • Virology
  • Molecular Biology
  • Cell Biology

Background:

  • p63 is a crucial transcription factor involved in cell survival and development.
  • Rubella virus (RV) is a human pathogen known to cause various diseases.
  • The impact of RV infection on p63 isoform expression remains largely unexplored.

Purpose of the Study:

  • To investigate the effect of rubella virus infection on the expression of p63 isoforms in Vero cells.
  • To determine how RV alters the balance of different p63 protein variants.

Main Methods:

  • Vero cells were infected with the To-336 strain of rubella virus.
  • Protein levels of p63 isoforms were analyzed using Western blotting or similar techniques.
  • Semi-quantitative end-point dilution RT-PCR was employed to measure TAp63beta mRNA levels.

Main Results:

  • RV infection led to elevated levels of TAp63 isoforms.
  • A specific isoform, DeltaNp63alpha (approx. 73 kDa), was downregulated.
  • TAp63beta (approx. 66 kDa) became the predominant p63 isoform, with a 4-fold increase in its mRNA levels.

Conclusions:

  • Rubella virus infection significantly alters the stoichiometric ratio of p63 isoforms.
  • The observed dysregulation of p63 expression may be a mechanism by which RV induces apoptosis.
  • These findings shed light on the molecular interactions between RV and host cell factors.

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