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Paramyxoviruses for Tumor-targeted Immunomodulation: Design and Evaluation Ex Vivo
12:42

Paramyxoviruses for Tumor-targeted Immunomodulation: Design and Evaluation Ex Vivo

Published on: January 7, 2019

Opposing oncogenic activities of small DNA tumor virus transforming proteins

G Chinnadurai1

  • 1Institute for Molecular Virology, Doisy Research Center, Saint Louis University Medical School, 1100 South Grand Blvd., 6th Floor, St. Louis, MO 63104, USA. chinnag@slu.edu

Trends in Microbiology
|February 19, 2011
PubMed

Insights

The E1A gene of human adenovirus has dual roles, acting as both a viral oncogene that promotes cell transformation and a tumor suppressor. This review explores E1A

Area of Science:

  • Oncogenic viral gene function
  • Cellular transformation and proliferation
  • Tumor suppressor mechanisms

Background:

  • The E1A gene of species C human adenovirus is a well-studied viral oncogene.
  • E1A proteins are crucial in understanding cell proliferation and the function of cellular proteins like the retinoblastoma protein.
  • Previous research has established E1A's role in immortalizing cells and cooperating with other oncogenes for cell transformation.

Purpose of the Study:

  • To review the dual functions of E1A proteins, encompassing both oncogenic and tumor-suppressive activities.
  • To discuss how E1A research led to the identification of similar tumor-suppressive functions in human papillomaviruses.
  • To explore the implications of these opposing E1A functions in viral replication within epithelial cells.

Main Methods:

  • Review of existing scientific literature on adenovirus E1A gene and protein functions.
  • Analysis of studies investigating E1A's role in cell immortalization, transformation, and tumor suppression.
  • Comparative analysis of E1A functions with related tumor-suppressive mechanisms in human papillomaviruses.

Main Results:

  • E1A proteins exhibit both transforming (oncogenic) and tumor-suppressive functions.
  • Studies on E1A's tumor-suppressive role revealed a related function in benign human papillomaviruses.
  • The opposing functions of E1A may play a significant role in viral replication dynamics in epithelial cells.

Conclusions:

  • The E1A gene of human adenovirus possesses complex, context-dependent roles in cell transformation and tumor suppression.
  • Research into E1A has broadened our understanding of viral oncogenesis and identified novel tumor-suppressive pathways.
  • Understanding E1A's dual functions is critical for elucidating viral replication strategies and developing therapeutic interventions.

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