Abstract
LM cells continuously growing in the absence of serum and exogenous lipids have been used for studies on the mechanism of action of interferon (IFN). Several of its biological activities, namely the inhibition of virus and cell growth and the increased cytotoxicity to Poly(rI).Poly(rC) (=dsRNA), are shown to be increased in such conditions. None of these three effects of IFN depends on an active prostaglandin biosynthesis, as previously proposed, since cells in our conditions are lacking the necessary precursors.
Variants have been obtained which are resistant to the increased cytotoxicity of IFN-treated cells to Poly(rI).Poly(rC). We believe that this model will be useful for studies on the mechanism of action of IFN through the isolation of variants and the analysis of lipidic and proteic requirements of its activity.
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© 1983 Springer-Verlag Berlin Heidelberg
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Milhaud, P., Faure, T., Chaintreuil, J., Lebleu, B. (1983). Serum-Free Cultures of Mouse LM Fibroblasts as a Tool for Biochemical and Genetic Studies in the Cellular Responses to Interferon. In: Fischer, G., Wieser, R.J. (eds) Hormonally Defined Media. Proceedings in Life Sciences. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-69290-1_56
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DOI: https://doi.org/10.1007/978-3-642-69290-1_56
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