PMID- 7656204 OWN - NLM STAT- MEDLINE DCOM- 19951004 LR - 20190816 IS - 0165-4608 (Print) IS - 0165-4608 (Linking) VI - 83 IP - 1 DP - 1995 Aug TI - Detection of 9p deletions in leukemia cell lines by interphase fluorescence in situ hybridization with YAC-derived probes. PG - 46-55 AB - Hemizygous and homozygous deletions of the type I interferon gene cluster (IFN) have been detected in about 20% of acute lymphoblastic leukemias. A putative tumor suppressor gene (TSG) is thought to be located centromeric to the IFN cluster on chromosomal bands 9p21-22. We studied the accuracy of fluorescence in situ hybridization (FISH) for detecting deletions in interphase cells using yeast artificial chromosome (YAC) clones containing all or part of the IFN cluster. FISH probes were generated from YACs (320-1300 kb in size) by a sequence-independent amplification technique (SIA). Fifteen cell lines (nine T-ALL, three B-cell precursor ALL, one B-ALL, one AML, one CML-BC) that had been well characterized by conventional cytogenetic analysis and molecular techniques were analyzed. We were able to detect all numerical changes of the IFN cluster including homozygous and hemizygous deletions accurately and to define subclones of the cell lines. Moreover, in six cell lines we were able to identify subclones. In dilution experiments the detection thresholds for subpopulations with homozygous and hemizygous deletions were determined to be 5% and 7.5%, respectively. FAU - Dreyling, M H AU - Dreyling MH AD - Department of Medicine, University of Chicago, Illinois 60637, USA. FAU - Kobayashi, H AU - Kobayashi H FAU - Olopade, O I AU - Olopade OI FAU - Le Beau, M M AU - Le Beau MM FAU - Rowley, J D AU - Rowley JD FAU - Bohlander, S K AU - Bohlander SK LA - eng GR - CA42557/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Cancer Genet Cytogenet JT - Cancer genetics and cytogenetics JID - 7909240 RN - 0 (DNA Probes) SB - IM MH - Base Sequence MH - *Chromosome Deletion MH - Chromosomes, Artificial, Yeast MH - DNA Probes MH - Humans MH - In Situ Hybridization, Fluorescence MH - Leukemia/*genetics MH - Metaphase MH - Molecular Sequence Data MH - Ploidies MH - Sensitivity and Specificity MH - Tumor Cells, Cultured EDAT- 1995/08/01 00:00 MHDA- 1995/08/01 00:01 CRDT- 1995/08/01 00:00 PHST- 1995/08/01 00:00 [pubmed] PHST- 1995/08/01 00:01 [medline] PHST- 1995/08/01 00:00 [entrez] AID - S0165460895000267 [pii] AID - 10.1016/s0165-4608(95)00026-7 [doi] PST - ppublish SO - Cancer Genet Cytogenet. 1995 Aug;83(1):46-55. doi: 10.1016/s0165-4608(95)00026-7.