Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
11
pubmed:dateCreated
2007-10-11
pubmed:abstractText
DNA vaccine and dendritic cells (DCs)-based vaccine have emerged as promising strategies for cancer immunotherapy. Fms-like tyrosine kinase 3-ligand (Flt3L) and granulocyte-macrophage-colony-stimulating factor (GM-CSF) have been exploited for the expansion of DC. It was reported previously that combination of plasmid encoding GM-CSF with HER2/neu DNA vaccine induced predominantly CD4(+) T-cell-mediated antitumor immune response. In this study, we investigated the modulation of immune responses by murine Flt3L and GM-CSF, which acted as genetic adjuvants in the forms of bicistronic (pFLAG) and monocistronic (pFL and pGM) plasmids for HER2/neu DNA vaccine (pN-neu). Coexpression of Flt3L and GM-CSF significantly enhanced maturation and antigen-presentation abilities of splenic DC. Increased numbers of infiltrating DC at the immunization site, higher interferon-gamma production, and enhanced cytolytic activities by splenocytes were prominent in mice vaccinated with pN-neu in conjunction with pFLAG. Importantly, a potent CD8(+) T-cell-mediated antitumor immunity against bladder tumors naturally overexpressing HER2/neu was induced in the vaccinated mice. Collectively, our results indicate that murine Flt3L and GM-CSF genes coexpressed by a bicistronic plasmid modulate the class of immune responses and may be superior to those codelivered by two separate monocistronic plasmids as the genetic adjuvants for HER2/neu DNA vaccine.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0929-1903
pubmed:author
pubmed:issnType
Print
pubmed:volume
14
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
904-17
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed-meshheading:17704754-Animals, pubmed-meshheading:17704754-Antigen Presentation, pubmed-meshheading:17704754-CD4-Positive T-Lymphocytes, pubmed-meshheading:17704754-CD8-Positive T-Lymphocytes, pubmed-meshheading:17704754-Cancer Vaccines, pubmed-meshheading:17704754-Dendritic Cells, pubmed-meshheading:17704754-Gene Therapy, pubmed-meshheading:17704754-Genetic Vectors, pubmed-meshheading:17704754-Granulocyte-Macrophage Colony-Stimulating Factor, pubmed-meshheading:17704754-Membrane Proteins, pubmed-meshheading:17704754-Mice, pubmed-meshheading:17704754-Mice, Inbred Strains, pubmed-meshheading:17704754-Plasmids, pubmed-meshheading:17704754-Receptor, erbB-2, pubmed-meshheading:17704754-Spleen, pubmed-meshheading:17704754-Tumor Burden, pubmed-meshheading:17704754-Urinary Bladder Neoplasms, pubmed-meshheading:17704754-Vaccination, pubmed-meshheading:17704754-Vaccines, DNA
pubmed:year
2007
pubmed:articleTitle
Coexpression of Flt3 ligand and GM-CSF genes modulates immune responses induced by HER2/neu DNA vaccine.
pubmed:affiliation
Institute of Basic Medical Sciences, National Cheng Kung University Medical College, Tainan, Taiwan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't