Genomic organization of the translocations (8;14) and (14;18) in a new lymphoma cell line.
We generated a new lymphoma cell line carrying the translocations (8;14) and (14;18) and studied the genomic organization and expression of the BCL-2 and MYC genes. Polymerase chain reaction (PCR) and Southern analysis showed that the breakpoints of t(14;18) were located in the major breakpoint region (mbr) of the BCL-2 gene and just 5' of JH6 in the IgH locus. The breakpoints of the t(8;14) were located upstream of exon 2 in the non-coding region of the MYC gene and near the switch region of the IgH locus. Both IgH loci were involved in chromosomal translocations resulting in the absence of a functional B-cell receptor. Normal BCL-2 and truncated MYC transcripts were detected in these cells. The BCL-2 protein was expressed.
Lambrechts
A C
AC
Department of Molecular Biology, Dr. Daniel den Hoed Cancer Center, Rotterdam, The Netherlands.
Dorssers
L C
LC
Hupkes
P E
PE
van Gurp
R
R
Baumgarten
R
R
Hagemeijer
A
A
van 't Veer
M B
MB
Touw
I P
IP
D000368:Aged; D001853:Bone Marrow / Q000473:pathology; D002883:Chromosomes, Human, Pair 14; D002887:Chromosomes, Human, Pair 18; D002898:Chromosomes, Human, Pair 8; D005260:Female; D015870:Gene Expression; D016259:Genes, myc; D015894:Genome, Human; D006801:Humans; D007621:Karyotyping; D016400:Lymphoma, Large-Cell, Immunoblastic / Q000235:genetics*; D016133:Polymerase Chain Reaction; D011518:Proto-Oncogene Proteins / Q000235:genetics; D019253:Proto-Oncogene Proteins c-bcl-2; D012333:RNA, Messenger / Q000235:genetics; D014178:Translocation, Genetic; D014407:Tumor Cells, Cultured
D011518:Proto-Oncogene Proteins; D019253:Proto-Oncogene Proteins c-bcl-2; D012333:RNA, Messenger