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Updated: Aug 24, 2026

Orthotopic Implantation and Peripheral Immune Cell Monitoring in the II-45 Syngeneic Rat Mesothelioma Model
09:31

Orthotopic Implantation and Peripheral Immune Cell Monitoring in the II-45 Syngeneic Rat Mesothelioma Model

Published on: October 2, 2015

The pathogenesis of mesothelioma

Michele Carbone1, Robert A Kratzke, Joseph R Testa

  • 1Cancer Immunology Program, Cardinal Bernardin Cancer Center, Department of Pathology, Loyola University Chicago, USA.

Seminars in Oncology
|February 12, 2002
PubMed

Insights

Malignant mesothelioma is linked to asbestos exposure, but Simian virus 40 (SV40) may also play a role. Asbestos and SV40 might act as co-carcinogens, contributing to mesothelioma development alongside genetic and environmental factors.

Area of Science:

  • Oncology
  • Virology
  • Environmental Health

Background:

  • Malignant mesothelioma (MM) is strongly associated with asbestos exposure, yet not all exposed individuals develop the disease.
  • Simian virus 40 (SV40), a DNA tumor virus, has been detected in human mesotheliomas and induces mesothelioma in hamsters.

Purpose of the Study:

  • To investigate the potential role of SV40 and its interaction with asbestos in the pathogenesis of malignant mesothelioma.
  • To explore the complex etiology of mesothelioma, including viral, environmental, and genetic factors.

Main Methods:

  • Detection of SV40 in human mesotheliomas.
  • In vitro studies on SV40-mediated transformation of human mesothelial cells.
  • Analysis of genetic mutations (p53, p16, p14ARF, NF2) and known environmental cofactors (erionite).

Main Results:

  • SV40 large tumor antigen is expressed in mesothelioma cells, and its inhibition halts tumor cell growth in vitro.
  • SV40 T-antigen binds and inhibits key cellular proteins (p53, Rb-family).
  • Asbestos exposure appears to enhance SV40-mediated transformation of human mesothelial cells, suggesting a co-carcinogenic effect.

Conclusions:

  • SV40 is implicated in mesothelioma pathogenesis, potentially acting as a co-carcinogen with asbestos.
  • Mesothelioma etiology is multifactorial, involving a complex interplay of environmental agents, viruses, and genetic predispositions.

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