期刊
CLINICAL IMMUNOLOGY
卷 124, 期 2, 页码 119-130出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.clim.2007.04.003
关键词
vaccination; tumor immunity; peptides; cytokines; T cells
类别
资金
- Intramural NIH HHS [Z01 BC010525-04] Funding Source: Medline
We assessed the ability of several factors to increase the size of tumor-antigen-specific CD8(+) T cell responses elicited by vaccines incorporating peptides and CpG-containing oligodeoxynucleotides (CpG). Neither granulocyte-macrophage colony-stimulating factor (GMCSF) nor an immunogenic MHC class II-presented helper peptide increased the size of epitope-specific CD8(+) T cell responses elicited by peptide+CpG-containing vaccines. In contrast, low-dose subcutaneous interleukin (IL)-2 dramatically increased the size of splenic and peripheral blood epitope-specific CD8(+) T cell responses generated by peptide + CpG-containing vaccines. Moreover, peptide + CpG-containing vaccines plus low-dose IL-2 mediated anti-tumor immunity. A prime-boost vaccination schedule elicited larger CD8(+) T cell responses than a weekly vaccination schedule. Including larger doses of peptide in vaccines led to larger vaccine-elicited CD8(+) T cell responses. Clinical trials of CpG-containing peptide vaccines are ongoing. These findings suggest strategies to increase the size of CD8(+) T cell responses generated by CpG-containing peptide vaccines that could be tested in future clinical trials. Published by Elsevier Inc.
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