tetano
Editor, Senior Moderator
Immunol Cell Biol. 2013 Sep 10. doi: 10.1038/icb.2013.46. [Epub ahead of print]
Optimal conditions required for influenza A infection-enhanced cross-priming of CD8+ T cells specific to cell-associated antigens.
Wei J, Waithman J, Xiao K, Oveissi S, Chen W.
Source
Ludwig Institute for Cancer Research, Melbourne-Austin Branch, Austin Health, Melbourne, Victoria, Australia.
Abstract
Dendritic cells can take up exogenous tumor antigens and present their antigenic epitopes to CD8+ T cells (TCD8+), a process called cross-presentation. Cross-presentation is especially important in antitumor immunity because tumor cells, although carrying tumor antigens, do not activate naive T cells efficiently because of a lack of co-stimulatory molecules. Our group has recently shown that influenza A virus (IAV) infection of allogeneic cells lead to enhanced cross-priming of TCD8+ specific to cellular antigens. To develop this into a potential vaccine strategy, in this study, we have systematically investigated the numbers of allogeneic cells infected by IAV, IAV doses and their infectious activity, the length of in vitro infection and other associated factors. We have defined the optimal immune-enhancing conditions and we have also shown in vivo that such enhanced cross-priming did lead to enhanced tumor protection. The knowledge should be useful for developing more robust cancer vaccine.Immunology and Cell Biology advance online publication, 10 September 2013; doi:10.1038/icb.2013.46.
PMID:
24018533
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/24018533
Optimal conditions required for influenza A infection-enhanced cross-priming of CD8+ T cells specific to cell-associated antigens.
Wei J, Waithman J, Xiao K, Oveissi S, Chen W.
Source
Ludwig Institute for Cancer Research, Melbourne-Austin Branch, Austin Health, Melbourne, Victoria, Australia.
Abstract
Dendritic cells can take up exogenous tumor antigens and present their antigenic epitopes to CD8+ T cells (TCD8+), a process called cross-presentation. Cross-presentation is especially important in antitumor immunity because tumor cells, although carrying tumor antigens, do not activate naive T cells efficiently because of a lack of co-stimulatory molecules. Our group has recently shown that influenza A virus (IAV) infection of allogeneic cells lead to enhanced cross-priming of TCD8+ specific to cellular antigens. To develop this into a potential vaccine strategy, in this study, we have systematically investigated the numbers of allogeneic cells infected by IAV, IAV doses and their infectious activity, the length of in vitro infection and other associated factors. We have defined the optimal immune-enhancing conditions and we have also shown in vivo that such enhanced cross-priming did lead to enhanced tumor protection. The knowledge should be useful for developing more robust cancer vaccine.Immunology and Cell Biology advance online publication, 10 September 2013; doi:10.1038/icb.2013.46.
PMID:
24018533
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/24018533