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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
25
pubmed:dateCreated
2000-8-30
pubmed:abstractText
Mouse fibroblasts (H-2(b)) were genetically engineered to express a costimulatory B7.1 and an interleukin-7 (IL-7; Fb/B7.1/IL7). The Fb/B7.1/IL7 cells were then pulsed with an ovalbumin (OVA) epitope (amino acids 257-264, SIINFEKL, H-2 K(b) restricted; Fb/B7. 1/IL7/OVA) and tested for the induction of OVA-specific cytotoxic T lymphocytes (CTLs) in C57BL/6 mice (H-2(b)). The genetically engineered fibroblasts lacking either B7.1 or IL-7 were constructed and used as controls. Immunization with the Fb/B7.1/IL7/OVA cells induced strong cytotoxic activities against OVA-expressing EL4 (EG7) tumor cells. The magnitude of the cytotoxic response in mice with the Fb/B7.1/IL7/OVA cells was significantly higher than the response in mice immunized with any other cell constructs. CD8(+) T cells were a major effector cell-type of antitumor response in the immunized mice with the Fb/B7.1/IL7/OVA cells. Furthermore, immunization with the Fb/B7.1/IL7/OVA cells significantly prolonged the survival period of mice when the mice were injected with EG7 tumor cells one week after the immunization. These results suggest that fibroblasts can be genetically modified to an efficient cell vaccine for the induction of antitumor response.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0264-410X
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
18
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2886-94
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:10812232-Adjuvants, Immunologic, pubmed-meshheading:10812232-Animals, pubmed-meshheading:10812232-Antibodies, Monoclonal, pubmed-meshheading:10812232-Antigens, CD8, pubmed-meshheading:10812232-Antigens, CD80, pubmed-meshheading:10812232-DNA, Complementary, pubmed-meshheading:10812232-Female, pubmed-meshheading:10812232-Fibroblasts, pubmed-meshheading:10812232-Genetic Engineering, pubmed-meshheading:10812232-Genetic Vectors, pubmed-meshheading:10812232-Infusions, Intravenous, pubmed-meshheading:10812232-Injections, Intraperitoneal, pubmed-meshheading:10812232-Injections, Subcutaneous, pubmed-meshheading:10812232-Interleukin-7, pubmed-meshheading:10812232-Mice, pubmed-meshheading:10812232-Mice, Inbred C57BL, pubmed-meshheading:10812232-Ovalbumin, pubmed-meshheading:10812232-Survival Analysis, pubmed-meshheading:10812232-Thymoma, pubmed-meshheading:10812232-Transfection, pubmed-meshheading:10812232-Tumor Cells, Cultured
pubmed:year
2000
pubmed:articleTitle
Augmentation of antitumor immunity by genetically engineered fibroblast cells to express both B7.1 and interleukin-7.
pubmed:affiliation
College of Pharmacy and Research Institute of Drug Development, Chonnam National University, Kwangju, South Korea. taekim@chonnam.chonnam.ac.kr
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't