PMID- 12505251 OWN - NLM STAT- MEDLINE DCOM- 20030115 LR - 20190816 IS - 0165-4608 (Print) IS - 0165-4608 (Linking) VI - 138 IP - 2 DP - 2002 Oct 15 TI - Molecular cytogenetic aberrations in CD30+ anaplastic large cell lymphoma cell lines. PG - 95-101 AB - Anaplastic large cell lymphomas (ALCL) in children represent a heterogeneous group of neoplasms with regard to the cell lineages involved. The chromosomal 5q35 breakpoint (bp) and the expression of the NPM/ALK fusion gene are the most remarkable molecular cytogenetic features of these malignancies. To identify new locations of ALCL-related oncogenes, comparative genomic hybridization (CGH) was applied to three ALCL cell lines (SU-DHL-1, Karpas 299, and DEL) exhibiting the 5q35 bp and expressing the NPM/ALK transcript. The CGH profiles were compared with those obtained with DNA from U937, HL-60 cells, and altered lymph nodes from two children with ALCL. Significant DNA copy number gains and/or losses were observed on several chromosomes in all ALCL cell lines. Distinct amplicons were detected on 1q21 approximately q44 (DEL), 7q12 (SU-DHL-1), and 1q12 approximately q22 (Karpas 299) regions. The NPM/ALK fusion gene was confirmed by fluorescence in situ hybridization (FISH) analysis in more than 80% of interphase nuclei and metaphase spreads. Enhanced expression of TGF-beta2 and c-MET candidate genes located at the amplified regions was revealed in DEL and SU-DHL1 cell lines by Northern blot analysis. These findings delineate chromosomal imbalances in ALCL-derived cell lines in parallel with high level of amplification covering target DNA sequences, which could play a role in ALCL pathogenesis. FAU - Gogusev, Jean AU - Gogusev J AD - INSERM U507, Hopital Necker, Paris, France. gogusev@necker.fr FAU - Telvi, Louise AU - Telvi L FAU - Nezelof, Christian AU - Nezelof C LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Cancer Genet Cytogenet JT - Cancer genetics and cytogenetics JID - 7909240 RN - 0 (Ki-1 Antigen) RN - 0 (RNA, Messenger) SB - IM MH - Blotting, Northern MH - Blotting, Southern MH - *Chromosome Aberrations MH - Chromosomes, Human/genetics MH - Humans MH - In Situ Hybridization, Fluorescence MH - Karyotyping MH - Ki-1 Antigen/*analysis MH - Lymphoma, Large B-Cell, Diffuse/*genetics MH - Nucleic Acid Hybridization MH - RNA, Messenger/genetics/metabolism MH - Reverse Transcriptase Polymerase Chain Reaction MH - Tumor Cells, Cultured EDAT- 2002/12/31 04:00 MHDA- 2003/01/16 04:00 CRDT- 2002/12/31 04:00 PHST- 2002/12/31 04:00 [pubmed] PHST- 2003/01/16 04:00 [medline] PHST- 2002/12/31 04:00 [entrez] AID - S0165460802005897 [pii] AID - 10.1016/s0165-4608(02)00589-7 [doi] PST - ppublish SO - Cancer Genet Cytogenet. 2002 Oct 15;138(2):95-101. doi: 10.1016/s0165-4608(02)00589-7.