title: Host immune response to cytomegalovirus: products of transfected viral immediate-early genes are recognized by cloned cytolytic T lymphocytes.
abstract: To confirm that immediate-early (IE) genes of murine cytomegalovirus (MCMV) give rise to antigens recognized by specific cytolytic T lymphocytes (CTL), a 10.8-kilobase fragment of MCMV DNA which is abundantly transcribed at IE times was transfected into L cells expressing the Ld class I major histocompatibility glycoprotein. The viral genome fragment contains sequences of the three IE transcription units of MCMV: ie1, ie2, and ie3. In the transfected cell lines, only the predominant 2.75-kilobase transcript of ie1 and its translation product pp89 could be detected. The transfectants were analyzed for membrane expression of an IE antigen by employing clone IE1, an IE-specific CTL clone, as the probe. Only cells that expressed both the MCMV IE gene(s) and the Ld gene were recognized by the CTL clone.
mesh_terms: D000956:Antigens, Viral / Q000235:genetics / Q000276:immunology*; D003587:Cytomegalovirus / Q000235:genetics / Q000276:immunology*; D005814:Genes, Viral; D006183:H-2 Antigens / Q000276:immunology; D017874:Immediate-Early Proteins; D007739:L Cells; D013602:T-Lymphocytes, Cytotoxic / Q000276:immunology*; D014162:Transfection; D014764:Viral Proteins / Q000235:genetics / Q000276:immunology*
chemical_list: D000956:Antigens, Viral; D006183:H-2 Antigens; D017874:Immediate-Early Proteins; D014764:Viral Proteins; C044582:immediate-early proteins, cytomegalovirus