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Infection by polyomavirus of murine cells deficient in class I major histocompatibility complex expression

N Sanjuan1, M Zijlstra, J Carroll

  • 1Department of Pathology, Harvard Medical School, Boston, Massachusetts 02115.

Journal of Virology
|July 1, 1992
PubMed

Insights

Polyomavirus can infect cells even without intact class I major histocompatibility complex (MHC) molecules. This finding suggests MHC class I is not essential for polyomavirus infection.

Area of Science:

  • Virology
  • Immunology
  • Cell Biology

Background:

  • Major histocompatibility complex (MHC) class I molecules play crucial roles in immune surveillance.
  • Beta 2-microglobulin is essential for the expression of functional MHC class I molecules on cell surfaces.
  • Polyomavirus is a well-studied model virus for understanding viral entry and replication.

Purpose of the Study:

  • To investigate the role of intact major histocompatibility complex class I molecules in polyomavirus infection.
  • To determine if beta 2-microglobulin deficiency affects polyomavirus infectivity.

Main Methods:

  • Comparison of polyomavirus infection in embryonic fibroblasts and kidney epithelial cells from beta 2-microglobulin-deficient mice and normal littermates.
  • Assessment of infection through viral capsid antigen expression, cytopathic effects, and infectious virus yields.

Main Results:

  • Cells from beta 2-microglobulin-deficient mice showed similar susceptibility to polyomavirus infection as cells from normal mice.
  • No significant differences were observed in viral capsid antigen expression, cytopathic effects, or infectious virus yields between the two groups.

Conclusions:

  • The expression of intact class I major histocompatibility complex molecules is not essential for polyomavirus infection.
  • Polyomavirus can successfully infect cells lacking functional MHC class I expression.

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