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in vitro effects of recombinant human interferon gamma on human mesothelioma cell lines

1993; Wiley; Volume: 55; Issue: 3 Linguagem: Inglês

10.1002/ijc.2910550331

1097-0215

Lin Zeng, Annie Buard, Laure Saint-Etienne, Marie‐Claude Jaurand, J. Bignon, I. Monnet, Patrick Brochard, C Boutin, J Fleury,

Medical Imaging and Pathology Studies

Malignant mesothelioma is a tumor arising from serous surfaces and often related to asbestos exposure. Malignant mesothelioma is resistant to various forms of therapy. Radiotherapy, surgery or chemotherapy only slightly improve prognosis. IFN-gamma produces complete or partial responses in stage-I patients with malignant mesothelioma. The in vitro biological effect of IFN-gamma on malignant mesothelioma cells remains poorly elucidated. In the present study, 32 well-characterized human mesothelioma cell lines (HMCL) were treated with r-hu IFN-gamma at 4 doses and cell growth was determined by a colorimetric method (MTT assay). Among the 32 HMCLs tested, II exhibited significant cell-growth inhibition; 16 were insensitive to r-hu IFN-gamma, and 5 were slightly inhibited. The sensitive cell lines were strongly inhibited by r-hu IFN-gamma. Our results show that HMCL exhibit a large range of responses to r-hu IFN-gamma, some of which can be compared with those obtained in vivo in humans.