| http://purl.uniprot.org/citations/10702417 | http://www.w3.org/1999/02/22-rdf-syntax-ns#type | http://purl.uniprot.org/core/Journal_Citation |
| http://purl.uniprot.org/citations/10702417 | http://www.w3.org/2000/01/rdf-schema#comment | "Follicular lymphoma (FL) is a B cell non-Hodgkin's lymphoma (NHL) that frequently displays a t(14;18) translocation. Clonal evolution and histological transformation of FL is frequently associated with the accumulation of secondary genetic alterations. It has been demonstrated that the BCL-6 gene can be altered by chromosomal rearrangements and by mutations clustering in its 5' noncoding region in a significant fraction of FL and diffuse large cell lymphoma (DLCL). To elucidate the role of the BCL-6 gene alterations in the histological transformation and clonal progression of FL, we analyzed serial biopsy specimens from 12 patients with FL. Two cases of FL showed no histological alteration in the second biopsy, and 10 cases of FL showed morphological transformation to DLCL in the second biopsy. Southern blot analysis was used to detect rearrangement of the BCL-6 gene, polymerase chain reaction-single strand conformation polymorphism and sequence analysis were performed for identification of mutations in the 5' noncoding region of the BCL-6 gene, and immunohistochemical analysis was applied to reveal the BCL-6 protein expression. No BCL-6 gene rearrangement was detected in any of the samples, but a total of 58 mutations were found in the 5' noncoding region of the BCL-6 gene in seven cases. In five cases, both the FL and the clonally related FL or DLCL, and in two cases only the DLCL samples were mutated. The mutations were identical in multiple biopsy specimens of FL that did not show morphological transformation. In six patients where FL cells underwent morphological transformation, considerable intraclonal sequence heterogeneity was observed, indicating an ongoing type of somatic mutation. Based on the pattern of shared and nonshared mutations, the genealogical relationship of neoplastic clones could be established. In all of these cases, the histological transformation of FL was associated with the emergence of a subpopulation marked by new sites of mutations in the BCL-6 5' noncoding sequences. In three of these six cases, the histological transformation is also associated with the reduced expression of the BCL-6 protein. These findings demonstrate that mutation of the 5' noncoding region of the BCL-6 gene developed in the clonal evolution of FL, and at different time points in the lymphoma evolution different clonotypes dominate."xsd:string |
| http://purl.uniprot.org/citations/10702417 | http://purl.org/dc/terms/identifier | "doi:10.1016/s0002-9440(10)64969-3"xsd:string |
| http://purl.uniprot.org/citations/10702417 | http://purl.uniprot.org/core/author | "Nagy M."xsd:string |
| http://purl.uniprot.org/citations/10702417 | http://purl.uniprot.org/core/author | "Warnke R.A."xsd:string |
| http://purl.uniprot.org/citations/10702417 | http://purl.uniprot.org/core/author | "Matolcsy A."xsd:string |
| http://purl.uniprot.org/citations/10702417 | http://purl.uniprot.org/core/author | "Csernus B."xsd:string |
| http://purl.uniprot.org/citations/10702417 | http://purl.uniprot.org/core/author | "Laszlo T."xsd:string |
| http://purl.uniprot.org/citations/10702417 | http://purl.uniprot.org/core/author | "Szereday Z."xsd:string |
| http://purl.uniprot.org/citations/10702417 | http://purl.uniprot.org/core/date | "2000"xsd:gYear |
| http://purl.uniprot.org/citations/10702417 | http://purl.uniprot.org/core/name | "Am J Pathol"xsd:string |
| http://purl.uniprot.org/citations/10702417 | http://purl.uniprot.org/core/pages | "1017-1024"xsd:string |
| http://purl.uniprot.org/citations/10702417 | http://purl.uniprot.org/core/title | "Somatic mutation of the 5' noncoding region of the BCL-6 gene is associated with intraclonal diversity and clonal selection in histological transformation of follicular lymphoma."xsd:string |
| http://purl.uniprot.org/citations/10702417 | http://purl.uniprot.org/core/volume | "156"xsd:string |
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