Linked Life Data

15889252

Source:http://linkedlifedata.com/resource/pubmed/id/15889252

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
11
pubmed:dateCreated
2005-9-28
pubmed:abstractText
The variable domain of immunoglobulin heavy chain (Ig HV) is well-characterized tumor associated antigen expressed in B-cell malignancies, which may function as a T-cell target. However, T-cell epitopes derived from shared framework regions (FRs) of each IgHV subfamily capable of inducing cytotoxic T lymphocytes (CTLs) against the B-cell malignancy, have not been identified. Using the specific PCR primers of seven IgHV gene subfamilies, we amplified the IgHV gene rearrangement for 108 cases of B-cell acute lymphoblastic leukemia (B-ALL) patients. The IgHV gene rearrangement fragments of B-ALL patients were directly sequenced then classified into seven different subfamilies. The T-cell epitopes encoded by the IgHV gene in the B-ALL patients were predicted by SYFPEITHI and BIMAS programs and compared with those from 56 representative germline IgHV sequences in the genebank. For the HLA-A*0201 locus, we found 1 or 2 top score shared epitopes from each subfamily and got 12 epitopes altogether. Results showed that ten of them were in the FRs. Using an antigen-specific T-cell expansion system, we generated the peptide-special CTLs in vitro, which were capable of killing B lymphoma cell lines that belonged to the same IgHV subfamily in a peptide-specific and HLA-restricted manner. Furthermore, we proved that the cytotoxicity of CTLs was IgHV subfamily-specific. These data indicate possible immunotherapy approaches for B-cell malignances patients based on IgHV gene subfamilies.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0340-7004
pubmed:author
pubmed:issnType
Print
pubmed:volume
54
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1106-14
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Induction of anti B-cell malignance CTL response by subfamily-shared peptides derived from variable domain of immunoglobulin heavy chain.
pubmed:affiliation
Department of Hematology, Peking University First Hospital, No. 8, Xishiku Street, West District, Beijing 100034, China.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't