Linked Life Data

15629432

Source:http://linkedlifedata.com/resource/pubmed/id/15629432

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2005-1-4
pubmed:abstractText
Somatic hypermutation (SHM) of immunoglobulin variable (V) region genes occurs in the germinal center (GC) B cells during immune responses, depending on activation-induced cytidine deaminase (AID). SHM is associated with resected double-strand DNA breaks (DSBs) which were shown to occur specifically in rearranged V regions in the GC B cells and CD40-stimulated B cells expressing AID. So far, endonucleases responsible for the DSBs have not been identified. Here we show that DNase gamma, a member of DNase I family of endonucleases, is expressed in GC B cells and CD40-stimulated B cells. Overexpression of DNase gamma in the mutation-competent Ramos B-cell line resulted in a marked increase in the resected but not blunt DSBs in the V region. Conversely, a selective DNase gamma inhibitor, DR396, suppressed the generation of the resected DSBs. These results suggest that DNase gamma is involved in the generation of resected DSBs associated with SHM.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0006-291X
pubmed:author
pubmed:issnType
Print
pubmed:day
4
pubmed:volume
327
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
76-83
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Involvement of DNase gamma in the resected double-strand DNA breaks in immunoglobulin genes.
pubmed:affiliation
Division of Molecular Biology, Research Institute for Biological Sciences, Tokyo University of Science, 2669 Yamazaki, Noda, Chiba 278-0022, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't