Linked Life Data

15678149

Source:http://linkedlifedata.com/resource/pubmed/id/15678149

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2005-3-17
pubmed:abstractText
Deregulation of apoptosis signalling is commonly found in cancer and results in resistance to cytotoxic therapies. Immunotherapy is a promising strategy to eliminate resistant cancer cells. The transfer of T-lymphocytes during allogeneic stem cell transplantation is clinically explored to induce a 'graft-versus-tumor' effect (GvT). Cytotoxic T-lymphocytes (CTL), which are major effectors of GvT, eliminate cancer cells by inducing apoptosis via multiple parallel pathways. Here, we study in vitro and in vivo the susceptibility of murine cancer cells engineered to express single antiapoptotic genes to CTL-mediated cytotoxicity. Interestingly, we find that single inhibitors of caspase activation, such as BCL-XL or dominant-negative mutants of FADD and caspase-9, protect cancer cells against antigen-specific CTL in vitro. Moreover, expression of BCL-XL impairs the growth suppression by adoptively transplanted CTL of established tumours in vivo. Hence, apoptosis defects that provide protection to cytotoxic cancer therapies can confer crossresistance to immunotherapy by tumour-reactive CTL.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
1350-9047
pubmed:author
pubmed:issnType
Print
pubmed:volume
12
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
317-25
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Inhibitors of apoptosis confer resistance to tumour suppression by adoptively transplanted cytotoxic T-lymphocytes in vitro and in vivo.
pubmed:affiliation
Gene Therapy Laboratory, Johannes Gutenberg University, Mainz, Germany.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't