The Bcl6 locus is not mutated in mouse B-cell lineage lymphomas.
In normal human germinal centre (GC) B-cells and post-GC B-cell lymphomas, a region in the first intron of the BCL6 gene, termed the major mutations cluster (MMC) exhibits somatic point mutations and deletions with patterns very similar to those seen in the variable regions of immunoglobulin (Ig) genes. In studies of mouse post-GC diffuse large cell lymphoma, Burkitt lymphomas, and plasmacytomas, direct sequencing or cold SSCP analyses revealed no mutations within a 686-bp region in Bcl6 intron 1 with 72% identity to the human MMC. The mouse Bcl6 locus must be inaccessible to the mutational machinery responsible for somatic mutations of Ig and BCL6 in humans.
Laboratory of Immunopathology, National Institute of Allergy and Infectious Diseases, 7 Centre Drive, Room 304, MSC 0760, Bethesda, MD 20892, USA . mhori@niaid.nih.gov
Mitsuo
M
Hori
Chen-Feng
CF
Qi
Ted A
TA
Torrey
Konrad
K
Huppi
Herbert C
HC
Morse
D000818:Animals; D019070:Cell Lineage; D004252:DNA Mutational Analysis; D004268:DNA-Binding Proteins / Q000235:genetics*; D006801:Humans; D007438:Introns; D016393:Lymphoma, B-Cell / Q000235:genetics* / Q000473:pathology; D016403:Lymphoma, Large B-Cell, Diffuse / Q000235:genetics / Q000473:pathology; D051379:Mice; D020297:Mice, Congenic; D009154:Mutation; D011518:Proto-Oncogene Proteins / Q000235:genetics*; D051560:Proto-Oncogene Proteins c-bcl-6; D012689:Sequence Homology, Nucleic Acid; D014157:Transcription Factors / Q000235:genetics*
D004268:DNA-Binding Proteins; D011518:Proto-Oncogene Proteins; D051560:Proto-Oncogene Proteins c-bcl-6; D014157:Transcription Factors