PMID- 10887208 OWN - NLM STAT- MEDLINE DCOM- 20001103 LR - 20190513 IS - 0267-8357 (Print) IS - 0267-8357 (Linking) VI - 15 IP - 4 DP - 2000 Jul TI - Spontaneous and X-ray-induced chromosomal aberrations in Werner syndrome cells detected by FISH using chromosome-specific painting probes. PG - 303-10 AB - Werner syndrome (WS) is a rare autosomal disorder characterized by premature aging exhibiting chromosome instability and predisposition to cancer. Cells derived from WS patients show a variety of constitutionally stable chromosomal aberrations as detected by conventional chromosome banding techniques. We have employed the fluorescence in situ hybridization (FISH) technique using painting probes for 12 different chromosomes to detect stable chromosome exchanges in three WS cell lines and three control cell lines. WS cell lines showed increased frequencies of both stable and unstable chromosome aberrations detected by FISH and Giemsa staining, respectively. One WS lymphoblastoid cell line (KO375) had a 5/12 translocation in all the cells and approximately 60% of the cells had an additional translocated chromosome 12. A high frequency of aneuploid cells was found in all the WS cell lines studied. Though WS cells are known to be chromosomally unstable, unlike other chromosome instability syndromes they are not sensitive to mutagenic agents. We studied the frequencies of X-ray-induced chromosomal aberrations in two WS cell lines and found an approximately 60% increase in the frequencies of fragments and no consistent increase in the frequencies of exchanges. FAU - Grigorova, M AU - Grigorova M AD - Department of Radiation Genetics and Chemical Mutagenesis, Leiden University Medical Centre, Wassenaarseweg 72, 2333 AL, Leiden, The Netherlands. FAU - Balajee, A S AU - Balajee AS FAU - Natarajan, A T AU - Natarajan AT LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Mutagenesis JT - Mutagenesis JID - 8707812 SB - IM MH - Cell Line MH - Cells, Cultured MH - *Chromosome Aberrations MH - Chromosome Painting MH - Chromosomes/*radiation effects/*ultrastructure MH - Chromosomes, Human, Pair 1/radiation effects MH - Chromosomes, Human, Pair 12/radiation effects MH - Chromosomes, Human, Pair 4/radiation effects MH - Chromosomes, Human, Pair 5/radiation effects MH - Dose-Response Relationship, Radiation MH - Humans MH - In Situ Hybridization, Fluorescence/*methods MH - Microscopy, Fluorescence MH - Translocation, Genetic MH - Werner Syndrome/*genetics MH - X-Rays EDAT- 2000/07/11 11:00 MHDA- 2001/02/28 10:01 CRDT- 2000/07/11 11:00 PHST- 2000/07/11 11:00 [pubmed] PHST- 2001/02/28 10:01 [medline] PHST- 2000/07/11 11:00 [entrez] AID - 10.1093/mutage/15.4.303 [doi] PST - ppublish SO - Mutagenesis. 2000 Jul;15(4):303-10. doi: 10.1093/mutage/15.4.303.