PMID- 10398432 OWN - NLM STAT- MEDLINE DCOM- 19990805 LR - 20191024 IS - 1045-2257 (Print) IS - 1045-2257 (Linking) VI - 25 IP - 4 DP - 1999 Aug TI - Arylamine N-acetyltransferase type 2 (NAT2), chromosome 8 aneuploidy, and identification of a novel NAT1 cosmid clone: an investigation in bladder cancer by interphase FISH. PG - 376-83 AB - Two genes (arylamine N-acetyltransferase types 1 and 2, NAT1 and NAT2), which are known to metabolize bladder carcinogens, are located on chromosome band 8p22. Alterations in chromosome 8, including deletions of 8p, occur frequently in many epithelium-derived tumors. In this study, fluorescence in situ hybridization (FISH) was used for study of the relationship between chromosome 8 deletions in the region of NAT1 and NAT2 and grade and stage of tumor in bladder cancer. Cells from 52 bladder tumors were examined by dual-labeling FISH with a centromere 8-specific probe and a cosmid probe for NAT2. A more limited number were examined for loss with both the NAT2 probe and a newly constructed NAT1-specific cosmid. Loss of NAT2 was found in 6/52 patients in more than 30% of cells, and in 10/52 in 10%-30% of cells examined. Six samples also showed loss of NAT1, indicating that the region of deletion spans at least the distance of the two genes. No obvious correlation between loss of NAT genes with grade and stage of tumor was evident. Interestingly, 17/52 (32%) tumors showed an increased copy number of chromosome 8, with tumors of low stage showing relatively smaller increases of chromosome 8. Loss of 8p22 and genetic instability involving chromosome 8 indicate that this chromosome is important in bladder cancer and that NAT genes will act as important genetic landmarks in defining deletions in this disease. Genes Chromosomes Cancer 25:376-383, 1999. CI - Copyright 1999 Wiley-Liss, Inc. FAU - Stacey, M AU - Stacey M AD - Center for Pediatric Research, Eastern Virginia Medical School, Norfolk, Virginia, USA. FAU - Matas, N AU - Matas N FAU - Drake, M AU - Drake M FAU - Payton, M AU - Payton M FAU - Fakis, G AU - Fakis G FAU - Greenland, J AU - Greenland J FAU - Sim, E AU - Sim E LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Genes Chromosomes Cancer JT - Genes, chromosomes & cancer JID - 9007329 RN - 0 (Genetic Markers) RN - 0 (Isoenzymes) RN - EC 2.3.1.- (Acetyltransferases) RN - EC 2.3.1.5 (Arylamine N-Acetyltransferase) RN - EC 2.3.1.5 (N-acetyltransferase 1) RN - EC 2.3.1.5 (NAT2 protein, human) SB - IM MH - Acetyltransferases/*genetics MH - *Aneuploidy MH - Arylamine N-Acetyltransferase/*genetics MH - Chromosome Deletion MH - Chromosomes, Human, Pair 8/*genetics MH - Cloning, Molecular MH - Cosmids/*genetics MH - Genetic Markers MH - Genotype MH - Humans MH - In Situ Hybridization, Fluorescence MH - Interphase/genetics MH - Isoenzymes MH - Neoplasm Staging MH - Urinary Bladder Neoplasms/*genetics/pathology EDAT- 1999/07/09 00:00 MHDA- 1999/07/09 00:01 CRDT- 1999/07/09 00:00 PHST- 1999/07/09 00:00 [pubmed] PHST- 1999/07/09 00:01 [medline] PHST- 1999/07/09 00:00 [entrez] AID - 10.1002/(SICI)1098-2264(199908)25:4<376::AID-GCC10>3.0.CO;2-H [pii] AID - 10.1002/(sici)1098-2264(199908)25:4<376::aid-gcc10>3.0.co;2-h [doi] PST - ppublish SO - Genes Chromosomes Cancer. 1999 Aug;25(4):376-83. doi: 10.1002/(sici)1098-2264(199908)25:4<376::aid-gcc10>3.0.co;2-h.