title: Delineation of a previously unrecognized cis-acting element required for HLA class II gene expression.
abstract: The cis-acting DNA sequences that control expression of the HLA-DPA and HLA-DQB promoters have been investigated in detail. A set of recombinant plasmids containing 5' promoter deletions as well as site-directed mutants of the DPA and DQB genes were fused to a reporter gene and transfected into human B and interferon gamma (IFN-gamma)-inducible cells. A previously unrecognized cis element, which is essential both for transcription induced by IFN-gamma in several cell types and for constitutive class II expression in B cells, in addition to the well known X and Y boxes, has been defined. This sequence, which spans nucleotides -107 to -98 and -146 to -137 of the DPA and DQB promoters, respectively, has been called the J element. Some evidence for function of a fourth element, the S element, is also presented.
authors.affiliation: Department of Biochemistry and Molecular Biology, Harvard University, Cambridge, MA 02138.
authors.forename: M
authors.initials: M
authors.lastname: Sugawara
authors.forename: P D
authors.initials: PD
authors.lastname: Ponath
authors.forename: J
authors.initials: J
authors.lastname: Shin
authors.forename: Z
authors.initials: Z
authors.lastname: Yang
authors.forename: J L
authors.initials: JL
authors.lastname: Strominger
mesh_terms: D001483:Base Sequence; D002460:Cell Line; D002872:Chromosome Deletion; D004273:DNA, Neoplasm / Q000235:genetics; D015972:Gene Expression Regulation, Neoplastic / Q000187:drug effects; D005802:Genes, MHC Class II; D006681:HLA-D Antigens / Q000235:genetics*; D006683:HLA-DQ Antigens / Q000235:genetics; D059866:HLA-DQ beta-Chains; D006367:HeLa Cells; D006801:Humans; D007371:Interferon-gamma / Q000494:pharmacology; D008969:Molecular Sequence Data; D009838:Oligodeoxyribonucleotides; D010957:Plasmids; D011401:Promoter Regions, Genetic; D011994:Recombinant Proteins; D012689:Sequence Homology, Nucleic Acid; D014158:Transcription, Genetic; D014162:Transfection
chemical_list: D004273:DNA, Neoplasm; D006681:HLA-D Antigens; D006683:HLA-DQ Antigens; D059866:HLA-DQ beta-Chains; C057615:HLA-DQbeta antigen; D009838:Oligodeoxyribonucleotides; D011994:Recombinant Proteins; D007371:Interferon-gamma