title: Expression of the human cGMP-dependent protein kinase II gene is lost upon introduction of SV40 T antigen or immortalization in human cells.
abstract: We have cloned a human cGMP-dependent protein kinase type II cDNA to examine its gene expression in terms of cellular senescence and/or immortalization. The genetic locus was mapped to band 4q21 by FISH. Northern blot analysis revealed that expression of the type II gene was markedly decreased or lost in mortal or immortal human fibroblasts producing SV40 T antigen. Also in various immortalized cell lines tested, the gene was not expressed. In normal diploid fibroblasts, the gene was constitutively expressed during cell-cycle and population doubling levels (PDLs).
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D000952:Antigens, Polyomavirus Transforming / Q000096:biosynthesis*; D001483:Base Sequence; D002453:Cell Cycle; D002460:Cell Line; D002461:Cell Line, Transformed; D016922:Cellular Senescence; D002871:Chromosome Banding; D002874:Chromosome Mapping; D002894:Chromosomes, Human, Pair 4; D003001:Cloning, Molecular; D017869:Cyclic GMP-Dependent Protein Kinases / Q000096:biosynthesis* / Q000235:genetics*; D017931:DNA Primers; D004330:Drosophila; D005347:Fibroblasts; D015870:Gene Expression; D006801:Humans; D017404:In Situ Hybridization, Fluorescence; D007527:Isoenzymes / Q000096:biosynthesis / Q000235:genetics; D051379:Mice; D008969:Molecular Sequence Data; D016133:Polymerase Chain Reaction; D012333:RNA, Messenger / Q000032:analysis / Q000096:biosynthesis; D051381:Rats; D011994:Recombinant Proteins / Q000096:biosynthesis; D017386:Sequence Homology, Amino Acid; D013539:Simian virus 40 / Q000235:genetics*; D014162:Transfection
chemical_list: D000952:Antigens, Polyomavirus Transforming; D017931:DNA Primers; D007527:Isoenzymes; D012333:RNA, Messenger; D011994:Recombinant Proteins; D017869:Cyclic GMP-Dependent Protein Kinases