Linked Life Data

10092816

Source:http://linkedlifedata.com/resource/pubmed/id/10092816

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1999-4-13
pubmed:abstractText
We previously reported that cytokine gene transfer into weakly immunogenic tumor cells could enhance the generation of precursor cells of tumor-reactive T cells and subsequently augment antitumor efficacy of adoptive immunotherapy. We investigated whether such potent antitumor effector T cells could be generated from mice bearing poorly immunogenic tumors. In contrast to similarly modified weakly immunogenic tumors, MCA102 cells, which are chemically induced poorly immunogenic fibrosarcoma cells transfected with cDNA for IL-2, IL-4, IL-6, IFN-gamma, failed to augment the host immune reaction. Because priming of antitumor effector T cells in vivo requires two important signals provided by tumor-associated Ags and costimulatory molecules, these tumor cells were cotransfected with a B7-1 cDNA. Transfection of both IFN-gamma and B7-1 (MCA102/B7-1/IFN-gamma) resulted in regression of s.c. tumors, while tumor transfected with other combinations of cytokine and B7-1 showed progressive growth. Cotransfection of IFN-gamma and B7-1 into other poorly immunogenic tumor B16 and LLC cells also resulted in the regression of s.c. tumors. Cells derived from lymph nodes draining MCA102/B7-1/IFN-gamma tumors showed potent antitumor efficacy, eradicating established pulmonary metastases, but this effect was not seen with parental tumors. This mechanism of enhanced antitumor efficacy was further investigated, and T cells with down-regulated L-selectin expression, which constituted all the in vivo antitumor reactivity, were significantly increased in lymph nodes draining MCA102/B7-1/IFN-gamma tumors. These T cells developed into potent antitumor effector cells after in vitro activation with anti-CD3/IL-2. The strategy presented here may provide a basis for developing potent immunotherapy for human cancers.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0022-1767
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
162
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
3574-82
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed-meshheading:10092816-Animals, pubmed-meshheading:10092816-Antibodies, Monoclonal, pubmed-meshheading:10092816-Antigens, CD80, pubmed-meshheading:10092816-Carcinoma, Lewis Lung, pubmed-meshheading:10092816-Cell Division, pubmed-meshheading:10092816-Female, pubmed-meshheading:10092816-Fibrosarcoma, pubmed-meshheading:10092816-Gene Transfer Techniques, pubmed-meshheading:10092816-Histocompatibility Antigens Class I, pubmed-meshheading:10092816-Immunophenotyping, pubmed-meshheading:10092816-Immunotherapy, Adoptive, pubmed-meshheading:10092816-Interferon-gamma, pubmed-meshheading:10092816-Interleukin-2, pubmed-meshheading:10092816-L-Selectin, pubmed-meshheading:10092816-Lymph Nodes, pubmed-meshheading:10092816-Lymphocyte Activation, pubmed-meshheading:10092816-Melanoma, Experimental, pubmed-meshheading:10092816-Mice, pubmed-meshheading:10092816-Mice, Inbred C57BL, pubmed-meshheading:10092816-T-Lymphocytes, pubmed-meshheading:10092816-Time Factors, pubmed-meshheading:10092816-Transfection, pubmed-meshheading:10092816-Tumor Cells, Cultured
pubmed:year
1999
pubmed:articleTitle
Successful adoptive immunotherapy of murine poorly immunogenic tumor with specific effector cells generated from gene-modified tumor-primed lymph node cells.
pubmed:affiliation
Department of Medicine (II), Niigata University Medical School, Japan.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't