Identificiation of somatic hypermutation in the TP53 gene in B-cell chronic lymphocytic leukemia

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F65269705%3A_____%2F07%3A%230000064" target="_blank" >RIV/65269705:_____/07:#0000064 - isvavai.cz</a>

Alternative codes found

RIV/65269705:_____/08:#0000213 RIV/00216224:14310/08:00028197

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Identificiation of somatic hypermutation in the TP53 gene in B-cell chronic lymphocytic leukemia

Original language description

Abnormalities of the TP53 gene are associated with a particularly severe prognosis in patients with B-cell chronic lymphocytic leukemia (B-CLL). This tumor-suppressor is mostly inactivated by the deletion of one and point mutation of the other allele andhas not been previously shown to be hypermutated in B-CLL. We identified two patients whose lymphocytes showed repeatedly an extensive proportion of TP53 mutated cells by FASAY analysis (the yeast functional assay) and harbored various TP53 mutations, mostly single-base substitutions, in individual cells. The mutation targeting exhibited characteristic traits of the somatic hypermutation process. In the first patient (harboring the unmutated IgVH locus) a significant bias to point mutations at CG pairs(21/25; P=0.009), their remarkable preference for the RGYW/WRCY motives (28%) and the highest expression of the activation-induced cytidine deaminase (AID) mRNA among the thirty-four tested B-CLL samples.

Czech name

dentifikace somatických hypermutací v genu TP53 u B-buněčné chronické lymfocytární leukémie

Czech description

Abnormalities of the TP53 gene are associated with a particularly severe prognosis in patients with B-cell chronic lymphocytic leukemia (B-CLL). This tumor-suppressor is mostly inactivated by the deletion of one and point mutation of the other allele andhas not been previously shown to be hypermutated in B-CLL. We identified two patients whose lymphocytes showed repeatedly an extensive proportion of TP53 mutated cells by FASAY analysis (the yeast functional assay) and harbored various TP53 mutations, mostly single-base substitutions, in individual cells. The mutation targeting exhibited characteristic traits of the somatic hypermutation process. In the first patient (harboring the unmutated IgVH locus) a significant bias to point mutations at CG pairs(21/25; P=0.009), their remarkable preference for the RGYW/WRCY motives (28%) and the highest expression of the activation-induced cytidine deaminase (AID) mRNA among the thirty-four tested B-CLL samples.

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

FD - Oncology and haematology

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2008

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Molecular Immunology

ISSN

0161-5890

e-ISSN

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Volume of the periodical

45

Issue of the periodical within the volume

5

Country of publishing house

GB - UNITED KINGDOM

Number of pages

5

Pages from-to

1525-1529

UT code for WoS article

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EID of the result in the Scopus database

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