title: Molecular cloning of murine interferon gamma (MuIFN-gamma) cDNA and its expression in heterologous mammalian cells.
abstract: A complete cDNA clone of murine interferon-gamma (MuIFN-gamma) was obtained by recombining two appropriate segments from partial cDNA clones originally identified by colony hybridization with rat IFN-gamma chromosomal gene fragments as probes. An expression vector was constructed in which the cDNA was placed under control of the SV40 early promoter. Transient expression of MuIFN-gamma was obtained by transformation of COS-1 cells. Subsequently, this interferon expression unit was linked to a vector containing a dihydrofolate reductase (DHFR) modular gene and used to transform DHFR(-)-CHO cells. Cell clones were selected that constitutively produce an interferon activity which by several criteria was found to be indistinguishable from natural, splenocyte-derived MuIFN-gamma.
mesh_terms: D000818:Animals; D001483:Base Sequence; D002460:Cell Line; D002472:Cell Transformation, Viral; D002522:Chlorocebus aethiops; D003001:Cloning, Molecular; D006224:Cricetinae; D003412:Cricetulus; D004247:DNA / Q000378:metabolism*; D005260:Female; D005822:Genetic Vectors; D007371:Interferon-gamma / Q000235:genetics*; D007668:Kidney; D051379:Mice; D008815:Mice, Inbred Strains; D010053:Ovary; D011401:Promoter Regions, Genetic; D013539:Simian virus 40 / Q000235:genetics; D014158:Transcription, Genetic
chemical_list: D007371:Interferon-gamma; D004247:DNA