Linked Life Data

16076257

Source:http://linkedlifedata.com/resource/pubmed/id/16076257

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
8
pubmed:dateCreated
2005-8-3
pubmed:abstractText
Oncotropic and oncolytic viruses have attracted high attention as antitumor agents because they preferentially kill cancer cells in vitro and reduce the incidence of spontaneous, induced, or implanted animal tumors. Some autonomous parvoviruses (H-1, minute virus of mice) and derived recombinant vectors are currently under preclinical evaluation. Still not fully understood, their antitumor properties involve more than just tumor cell killing. Because wild-type parvovirus-mediated tumor cell lysates (TCLs) may trigger antigen-presenting cells (APCs) to augment the host immune repertoire, we analyzed phagocytosis, maturation, and crosspresentation of H-1-induced TCLs by human dendritic cells (DCs). We first established H-1-mediated oncolysis in two HLA-A2(+) and A2(-) variant melanoma cell clones. Monocyte-derived immature DCs phagocytosed H- 1-infected TCLs as well as ultraviolet-induced apoptotic TCLs and better than freeze-thaw-induced necrotic TCLs. Immature DCs incubated with H-1-induced TCLs acquired specific maturation markers comparable to a standard cytokine cocktail. Furthermore, A2(+) DCs pulsed with H-1-infected A2(-) TCLs cross-presented melanoma antigens to specific cytotoxic T lymphocytes (CTLs) and released proinflammatory cytokines. This shows for the first time that tumor cell killing by a wild-type oncolytic virus directly stimulates human APCs and CTLs. Because H-1-infected tumors enhance the immune repertoire, the clinical perspectives of parvoviral vectors are even more promising.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
1043-0342
pubmed:author
pubmed:issnType
Print
pubmed:volume
16
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
996-1005
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Parvovirus H-1-induced tumor cell death enhances human immune response in vitro via increased phagocytosis, maturation, and cross-presentation by dendritic cells.
pubmed:affiliation
Department of Medicine I, Johannes Gutenberg University Mainz, Germany.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't