| MALT1 and BCL10 aberrations in MALT lymphomas and their effect on the expression of BCL10 in the tumour cells. | |
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MedLine Citation:
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PMID: 16341151 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Among the genetic abnormalities reported to occur in mucosa-associated lymphoid tissue (MALT) lymphomas, the three translocations t(11;18)(q21;q21), t(1;14)(p22;q32) and t(14;18)(q32;q21) are of particular interest because they appear to be specific for, or at least closely related to this type of B-cell non-Hodgkin's lymphoma. These translocations affect the MALT1 (18q21) and BCL10 (1p22) genes. We retrieved 77 consecutive biopsies of MALT lymphomas (documented with frozen material) over a 10-year period and investigated these cases for the presence of these three translocations with fluorescence in situ hybridisation, along with the immunohistochemical analysis of the intracellular localisation of the BCL10 protein. The above-listed translocations occurred mutually exclusive and were detected in 10, 1 and 3% of the cases, respectively (the latter incidence being much lower than in the previously reported studies by one single group). These genetic rearrangements corresponded well with the aberrant subcellular localisation of the BCL10 protein as found by immunohistochemistry: t(11;18)(q21;q21) and (1;14)(p22;q32) were marked by a, respectively, moderate to strong nuclear BCL10 staining pattern while t(14;18)(q32;q21)-positive MALT lymphomas were characterised by a perinuclear BCL10 staining pattern. This study further supports the close interaction between the MALT1 and BCL10 proteins in the pathogenesis of MALT lymphomas and may indicate that BCL10 immunohistochemistry is a simple technique to identify those MALT lymphoma cases with an underlying genetic aberration. |
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Authors:
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Xavier Sagaert; Michael Laurent; Mathys Baens; Iwona Wlodarska; Christiane De Wolf-Peeters |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc Volume: 19 ISSN: 0893-3952 ISO Abbreviation: Mod. Pathol. Publication Date: 2006 Feb |
Date Detail:
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Created Date: 2006-01-20 Completed Date: 2006-03-21 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8806605 Medline TA: Mod Pathol Country: United States |
Other Details:
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Languages: eng Pagination: 225-32 Citation Subset: IM |
Affiliation:
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Division of Morphology and Molecular Pathology, Katholieke Universiteit Leuven, Leuven, Belgium. xavier.sagaert@uz.kuleuven.ac.be |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adaptor Proteins, Signal Transducing
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analysis,
genetics* Caspases Chromosomes, Human, Pair 1 / genetics Chromosomes, Human, Pair 11 / genetics Chromosomes, Human, Pair 14 / genetics Chromosomes, Human, Pair 18 / genetics Gene Rearrangement* Humans Immunohistochemistry In Situ Hybridization, Fluorescence Karyotyping Lymphoma, B-Cell, Marginal Zone / genetics, metabolism, pathology* Neoplasm Proteins / genetics* Translocation, Genetic |
| Chemical | |
Reg. No./Substance:
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0/Adaptor Proteins, Signal Transducing; 0/BCL10 protein, human; 0/Neoplasm Proteins; EC 3.4.22.-/Caspases; EC 3.4.22.-/MALT1 protein, human |
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