Linked Life Data

1790142

Source:http://linkedlifedata.com/resource/pubmed/id/1790142

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1992-3-31
pubmed:abstractText
Conditions for generating and expanding cytotoxic tumor-specific, tumor-infiltrating lymphocytes (TIL) were studied to improve the efficacy of adoptive cancer immunotherapy. Thus, we have examined the growth and cytolytic patterns of bulk culture TIL from human renal cell carcinoma (RCC) cultured in low (20 U/ml) or high (1,000 U/ml) dose interleukin (IL)-2, with or without irradiated autologous tumor stimulation. By 55 days in culture, TIL grown in the presence of IL-2 without tumor stimulation lost their lytic activity, whereas those exposed to tumor stimulation maintained high levels of cytotoxicity against autologous and/or nonautologous tumor targets. Only TIL grown with low dose IL-2 and autologous tumor maintained long-term (over 4 months in culture) specific cytotoxicity against the autologous tumor, even upon cryopreservation and regrowth. These TIL were 88-97% and 80% positive for CD3 and CD8, with a persistent subset exhibiting CD4+ CD8+ double positive staining. Their specific cytotoxic activity was major histocompatibility complex Class I-restricted and inhibited by pretreating the TIL with anti-CD3 monoclonal antibody. TIL exposed to the four types of culture conditions, low or high dose IL-2, with or without irradiated autologous tumors, and exhibiting different lytic specificities, all expressed mRNA for interferon-gamma and tumor necrosis factor (TNF)-alpha, but not for IL-1-beta, IL-4, IL-6, and granulocyte-macrophage colony stimulating factor. The degree of TNF-alpha mRNA expression correlated with the degree of autologous tumor-specific cytotoxicity of these TIL. This initial report demonstrates that antigen-specific cytotoxicity against the autologous tumor does, in fact, exist within the RCC tumors.(ABSTRACT TRUNCATED AT 250 WORDS)
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
1053-8550
pubmed:author
pubmed:issnType
Print
pubmed:volume
10
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
347-54
pubmed:dateRevised
2008-3-18
pubmed:meshHeading
pubmed:year
1991
pubmed:articleTitle
Autologous tumor-specific cytotoxicity of tumor-infiltrating lymphocytes derived from human renal cell carcinoma.
pubmed:affiliation
Department of Surgery, UCLA School of Medicine.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't