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Related Experiment Videos

Gammaherpesvirus lytic gene expression as characterized by DNA array.

Joo Wook Ahn1, Kenneth L Powell, Paul Kellam

  • 1Wolfson Institute for Biomedical Research, University College London, London WC1E 6BT, United Kingdom.

Journal of Virology
|May 22, 2002
PubMed
Summary
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Murine gammaherpesvirus 68 (MHV-68) gene expression was profiled using a cDNA array. This study characterizes MHV-68 transcription kinetics and identifies key viral genes, advancing gammaherpesvirus research.

Area of Science:

  • Virology
  • Molecular Biology
  • Immunology

Background:

  • Gammaherpesviruses are linked to diseases like lymphomas and malignancies.
  • Murine gammaherpesvirus 68 (MHV-68) is a key animal model for studying gammaherpesviruses.
  • Detailed characterization of gammaherpesvirus gene expression, especially RNA and protein levels, is limited compared to other herpesvirus families.

Purpose of the Study:

  • To develop and utilize a cDNA array for comprehensive profiling of MHV-68 gene expression.
  • To experimentally supplement the existing homology-based genome annotation of MHV-68.
  • To characterize the transcription profiles and kinetic classes of MHV-68 genes.

Main Methods:

  • Development of a cDNA array for global gene expression analysis of MHV-68.

Related Experiment Videos

  • Time-course analysis of viral gene transcription at 3, 5, and 18 hours postinfection (p.i.).
  • Hierarchical cluster analysis of transcription profiles and kinetic classification by blocking protein synthesis and viral DNA replication.

    • Main Results:

    • Viral gene transcription initiated as early as 3 h p.i., with rapid escalation by 5 h p.i.
    • Most genes remained expressed at 18 h p.i., with ORFs M3, 52, and M9 showing particularly high expression levels.
    • Hierarchical clustering identified four gene groups, enabling functional predictions. Kinetic analysis classified genes into alpha (1), beta (30), and gamma (42) classes.

    Conclusions:

    • This study provides a fundamental characterization of MHV-68 gene expression profiles and kinetics.
    • The findings enhance the utility of MHV-68 as a model system for gammaherpesvirus research.
    • This experimental basis supports continued investigation into gammaherpesvirus-associated diseases and pathology.