PMID- 11351302 OWN - NLM STAT- MEDLINE DCOM- 20010628 LR - 20160303 IS - 0020-7136 (Print) IS - 0020-7136 (Linking) VI - 92 IP - 6 DP - 2001 Jun 15 TI - Characterization of chromosomal abnormalities in uroepithelial carcinomas by G-banding, spectral karyotyping and FISH analysis. PG - 824-31 AB - Chromosome analysis by G-banding, spectral karyotyping (SKY) and fluorescence in situ hybridization (FISH) was performed on 24 short-term cultured transitional cell bladder carcinomas and 5 cell lines established from bladder carcinomas. Except for one tumor with an apparently normal chromosomal constitution, clonal chromosome abnormalities were detected in all examined cases by the combined approach. The application of SKY and FISH techniques improved the karyotypic descriptions, originally based on G-banding only, by identifying 32 additional numerical changes, by establishing the chromosomal origin of 27 markers and 2 ring chromosomes, by redefining 53 aberrations and by detecting 15 hidden chromosomal rearrangements. No recurrent translocation, however, was detected. The most prominent karyotypic feature was thus the occurrence of deletions and losses of whole chromosome copies indicating the importance of tumor suppressor genes in transitional cell carcinoma pathogenesis. Invasive carcinomas were karyotypically more complex than were low grade superficial tumors. Specific losses of material from chromosome 9 and from chromosome arms 11p and 8p, and gains of 8q and 1q seem to be early changes appearing in superficial tumors, whereas losses from 4p and 17p and the formation of an isochromosome for 5p were associated with more aggressive tumor phenotypes. CI - Copyright 2001 Wiley-Liss, Inc. FAU - Fadl-Elmula, I AU - Fadl-Elmula I AD - Department of Clinical Genetics, University Hospital, Lund, Sweden. Imad.elmula@klingen.lu.se FAU - Kytola, S AU - Kytola S FAU - Pan, Y AU - Pan Y FAU - Lui, W O AU - Lui WO FAU - Derienzo, G AU - Derienzo G FAU - Forsberg, L AU - Forsberg L FAU - Mandahl, N AU - Mandahl N FAU - Gorunova, L AU - Gorunova L FAU - Bergerheim, U S AU - Bergerheim US FAU - Heim, S AU - Heim S FAU - Larsson, C AU - Larsson C LA - eng PT - Journal Article PL - United States TA - Int J Cancer JT - International journal of cancer JID - 0042124 SB - IM MH - Aged MH - Aged, 80 and over MH - Carcinoma/*genetics MH - Carcinoma, Transitional Cell/genetics MH - *Chromosome Aberrations MH - *Chromosome Banding MH - Chromosome Deletion MH - *Chromosome Disorders MH - Chromosomes, Human, Pair 11 MH - Chromosomes, Human, Pair 9 MH - Epithelium/*pathology/ultrastructure MH - Female MH - Humans MH - *In Situ Hybridization, Fluorescence MH - Isochromosomes MH - *Karyotyping MH - Male MH - Middle Aged MH - Models, Genetic MH - Neoplasms, Glandular and Epithelial/*genetics MH - Ring Chromosomes MH - Tumor Cells, Cultured MH - Urinary Bladder Neoplasms/*genetics/ultrastructure EDAT- 2001/05/15 10:00 MHDA- 2001/06/29 10:01 CRDT- 2001/05/15 10:00 PHST- 2001/05/15 10:00 [pubmed] PHST- 2001/06/29 10:01 [medline] PHST- 2001/05/15 10:00 [entrez] AID - 10.1002/ijc.1267 [pii] AID - 10.1002/ijc.1267 [doi] PST - ppublish SO - Int J Cancer. 2001 Jun 15;92(6):824-31. doi: 10.1002/ijc.1267.