PMID- 17230227 OWN - NLM STAT- MEDLINE DCOM- 20070413 LR - 20191210 IS - 0887-6924 (Print) IS - 0887-6924 (Linking) VI - 21 IP - 3 DP - 2007 Mar TI - Mapping of MYC breakpoints in 8q24 rearrangements involving non-immunoglobulin partners in B-cell lymphomas. PG - 515-23 AB - Chromosomal translocations joining the immunoglobulin (IG) and MYC genes have been extensively reported in Burkitt's and non-Burkitt's lymphomas but data concerning MYC rearrangements with non-IG partners are scarce. In this study, 8q24 breakpoints from 17 B-cell lymphomas involving non-IG loci were mapped by fluorescence in situ hybridization (FISH). In seven cases the breakpoint was inside a small region encompassing MYC: in one t(7;8)(p12;q24) and two t(3;8)(q27;q24), it was telomeric to MYC whereas in four cases, one t(2;8)(p15;q24) and three t(8;9)(q24;p13) it was located in a 85 kb region encompassing MYC. In these seven cases, partner regions identified by FISH contained genes known to be involved in lymphomagenesis, namely BCL6, BCL11A, PAX5 and IKAROS. Breakpoints were cloned in two t(8;9)(q24;p13), 2.5 and 7 kb downstream from MYC and several hundred kb 5' to PAX5 on chromosome 9, joining MYC to ZCCHC7 and to ZBTB5 exon 2, two genes encoding zinc-finger proteins. In these seven cases, MYC expression measured by quantitative reverse transcription-polymerase chain reaction (RT-PCR) was significantly higher when compared to that of patients without 8q24 rearrangement (P=0.006). These results suggest that these rearrangements are the consequence of a non-random process targeting MYC together with non-IG genes involved in lymphocyte differentiation and lymphoma progression. FAU - Bertrand, P AU - Bertrand P AD - Groupe d'Etude des Proliferations Lymphoides, Centre Henri Becquerel, INSERM U614, IFRMP23, Rouen, France. pbertrand@rouen.fnclcc.fr FAU - Bastard, C AU - Bastard C FAU - Maingonnat, C AU - Maingonnat C FAU - Jardin, F AU - Jardin F FAU - Maisonneuve, C AU - Maisonneuve C FAU - Courel, M-N AU - Courel MN FAU - Ruminy, P AU - Ruminy P FAU - Picquenot, J-M AU - Picquenot JM FAU - Tilly, H AU - Tilly H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20070118 PL - England TA - Leukemia JT - Leukemia JID - 8704895 RN - 0 (BCL11A protein, human) RN - 0 (BCL6 protein, human) RN - 0 (Carrier Proteins) RN - 0 (DNA-Binding Proteins) RN - 0 (IKZF1 protein, human) RN - 0 (Nuclear Proteins) RN - 0 (PAX5 Transcription Factor) RN - 0 (PAX5 protein, human) RN - 0 (Proto-Oncogene Proteins c-bcl-6) RN - 0 (Repressor Proteins) RN - 148971-36-2 (Ikaros Transcription Factor) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Base Sequence MH - Burkitt Lymphoma/genetics MH - Carrier Proteins/genetics MH - Cell Transformation, Neoplastic/genetics MH - *Chromosome Breakage MH - Chromosomes, Human, Pair 2/genetics/ultrastructure MH - Chromosomes, Human, Pair 3/genetics/ultrastructure MH - Chromosomes, Human, Pair 7/genetics/ultrastructure MH - Chromosomes, Human, Pair 8/*genetics/ultrastructure MH - Chromosomes, Human, Pair 9/genetics/ultrastructure MH - DNA-Binding Proteins/genetics MH - Female MH - *Genes, myc MH - Humans MH - Ikaros Transcription Factor/genetics MH - In Situ Hybridization, Fluorescence MH - Karyotyping MH - Lymphoma, B-Cell/*genetics MH - Male MH - Middle Aged MH - Molecular Sequence Data MH - Nuclear Proteins/genetics MH - PAX5 Transcription Factor/genetics MH - Proto-Oncogene Proteins c-bcl-6 MH - Repressor Proteins MH - Reverse Transcriptase Polymerase Chain Reaction MH - Translocation, Genetic/*genetics EDAT- 2007/01/19 09:00 MHDA- 2007/04/17 09:00 CRDT- 2007/01/19 09:00 PHST- 2007/01/19 09:00 [pubmed] PHST- 2007/04/17 09:00 [medline] PHST- 2007/01/19 09:00 [entrez] AID - 2404529 [pii] AID - 10.1038/sj.leu.2404529 [doi] PST - ppublish SO - Leukemia. 2007 Mar;21(3):515-23. doi: 10.1038/sj.leu.2404529. Epub 2007 Jan 18.