title: Integration site(s) of herpes simplex virus type 1 thymidine kinase gene and regional assignment of the gene for aminoacylase-1 in human chromosomes.
abstract: To investigate the chromosomal sites of integration of the herpes simplex virus type 1 (HSV-1) thymidine kinase (TK) gene in HSV-1-transformed human HeLa(BU25)/KOS 8-1 cells, the biochemically transformed cells were fused with TK-negative mouse LM(TK-) cells, and human-mouse somatic cell hybrid lines (LH81) were isolated using a HATG-ouabain selection system. The presence of HSV-1 TK activity in the hybrid lines was verified by disc polyacrylamide gel electrophoresis (PAGE) and by enzyme neutralization with type-specific rabbit anti-HSV-1 TK immunoglobulin. Karyotype analyses of several somatic cell hybrid clones using G-banding, Hoechst 33258 staining, and combined G-banding and Hoechst staining demonstrated that they retained only a few human chromosomes. A marker chromosome, M7, consisting of a chromosome 17 translocated to the short arm of 3, occurred in 25 of the 28 metaphases examined. Also chromosomes 8 and X were found in a minority of metaphases. Isozyme analyses showed that all 19 hybrid clones analyzed expressed human aminoacylase-1 (ACY1) and esterase D (ESD), markers for 3 and 13, respectively. Back-selection of somatic cell hybrid clones with 5-bromodeoxyuridine resulted in the isolation of several subclones lacking HSV-1 TK activity, human ACY1, human ESD, and the human chromosomes. These experiments suggest that the HSV-1 TK gene is associated with either M7 or a segment of 13, or both, in biochemically transformed HeLa(BU25)/KOS 8-1 cells. These experiments also permit localization of the ACY1 structural gene to the pter leads to p12 region of 3.
mesh_terms: D000581:Amidohydrolases / Q000235:genetics*; D000818:Animals; D043182:Carboxylesterase; D002265:Carboxylic Ester Hydrolases / Q000235:genetics; D002460:Cell Line; D002472:Cell Transformation, Viral; D002871:Chromosome Banding; D002874:Chromosome Mapping; D002877:Chromosomes, Human; D002900:Chromosomes, Human, 1-3; D002901:Chromosomes, Human, 13-15; D002902:Chromosomes, Human, 16-18; D005814:Genes, Viral; D006367:HeLa Cells / Q000201:enzymology; D006801:Humans; D006822:Hybrid Cells / Q000201:enzymology; D007621:Karyotyping; D051379:Mice; D018139:Simplexvirus / Q000201:enzymology / Q000235:genetics*; D013937:Thymidine Kinase / Q000235:genetics*
chemical_list: D013937:Thymidine Kinase; D002265:Carboxylic Ester Hydrolases; D043182:Carboxylesterase; C020118:ESD protein, human; D000581:Amidohydrolases; C019672:aminoacylase I