PMID- 7632955 OWN - NLM STAT- MEDLINE DCOM- 19950914 LR - 20210216 IS - 0006-4971 (Print) IS - 0006-4971 (Linking) VI - 86 IP - 4 DP - 1995 Aug 15 TI - Translocations and amplification of the BCL2 gene are detected in interphase nuclei of non-Hodgkin's lymphoma by in situ hybridization with yeast artificial chromosome clones. PG - 1481-6 AB - Translocation of the BCL2 gene in B-cell malignancies carrying t(14;18) and amplification of the BCL2 gene in a cell line (HBL-2) derived from a non-Hodgkin's lymphoma (NHL) were detected specifically in both metaphase spreads and interphase nuclei by fluorescence in situ hybridization (FISH) using yeast artificial chromosomes (YACs). A YAC clone containing the BCL2 gene yA153A6, a 360-kb clone spanning from approximately 60 kb upstream of BCL2 exon 1 to approximately 60 kb 3' of the minor breakpoint cluster region, was used for single-color FISH analysis. Seven patients with NHL and one patient with acute lymphoblastic leukemia were analyzed for BCL2 translocations. Interphase nuclei of NHL patients showed three signals when hybridized with the yA153A6 probe. This was expected because the YAC clone spans the BCL2 breakpoint regions on 18q21.3. In a patient with acute lymphoblastic leukemia, a positive signal for BCL2 was detected on der(14) at band 14q32.33 by single-color FISH with the yA153A6 probe, whereas no signals were detected on der(18). The amplification of BCL2 in the HBL-2 cell line was observed on a characteristic abnormal chromosome 18, add(18)(q23); the periodic pattern of the fluorescent signal of this region was suggestive of an amplicon. Using double-color FISH with YAC clones containing the more centromeric 18q21.3 gene gastrin-releasing peptide (y302F10) and the 14q32.33 gene (IgH; Y6), we detected t(14;18) by showing the juxtaposition of the 18q21.3 and 14q32.33 bands on the derivative chromosome 18. Interphase FISH with these YAC clones provided a rapid procedure for the diagnosis of B-cell malignancies carrying t(14;18). In addition, we showed that translocations and amplification of the BCL2 gene can be detected at the single-cell level. FAU - Taniwaki, M AU - Taniwaki M AD - Third Department of Internal Medicine, Kyoto Prefectural University of Medicine, Japan. FAU - Sliverman, G A AU - Sliverman GA FAU - Nishida, K AU - Nishida K FAU - Horiike, S AU - Horiike S FAU - Misawa, S AU - Misawa S FAU - Shimazaki, C AU - Shimazaki C FAU - Miura, I AU - Miura I FAU - Nagai, M AU - Nagai M FAU - Abe, M AU - Abe M FAU - Fukuhara, S AU - Fukuhara S AU - et al. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Blood JT - Blood JID - 7603509 RN - 0 (Proto-Oncogene Proteins) RN - 0 (Proto-Oncogene Proteins c-bcl-2) SB - IM GS - BCL2 MH - Adult MH - Aged MH - Chromosome Aberrations/*pathology MH - Chromosome Banding MH - Chromosome Disorders MH - Chromosomes, Artificial, Yeast MH - Female MH - Gene Amplification MH - Genes, Immunoglobulin MH - Humans MH - In Situ Hybridization, Fluorescence MH - Interphase MH - Lymphoma, Non-Hodgkin/*genetics/pathology MH - Male MH - Middle Aged MH - Proto-Oncogene Proteins/*genetics MH - Proto-Oncogene Proteins c-bcl-2 MH - Translocation, Genetic EDAT- 1995/08/15 00:00 MHDA- 1995/08/15 00:01 CRDT- 1995/08/15 00:00 PHST- 1995/08/15 00:00 [pubmed] PHST- 1995/08/15 00:01 [medline] PHST- 1995/08/15 00:00 [entrez] AID - S0006-4971(20)76407-4 [pii] PST - ppublish SO - Blood. 1995 Aug 15;86(4):1481-6.