tetano
Editor, Senior Moderator
Immunity. 2013 Nov 14;39(5):939-48. doi: 10.1016/j.immuni.2013.09.013.
Lung Airway-Surveilling CXCR3(hi) Memory CD8(+) T Cells Are Critical for Protection against Influenza A Virus.
Sl?tter B, Pewe LL, Kaech SM, Harty JT.
Source
Department of Microbiology, University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA.
Abstract
Inducing memory CD8(+) T cells specific for conserved antigens from influenza A virus (IAV) is a potential strategy for broadly protective vaccines. Here we show that memory CD8(+) T cells in the airways played an important role in early control of IAV. Expression of the chemokine receptor CXCR3 was critical for memory CD8(+) T cells to populate the airways during the steady state and vaccination approaches were designed to favor the establishment of memory CD8(+) T cells in the airways. Specifically, we found that interleukin-12 (IL-12) signaling shortly after immunization limited CXCR3 expression on memory CD8(+) T cells. Neutralization of IL-12 or adjuvants that did not induce high amounts of IL-12 enhanced CXCR3 expression, sustained airway localization of memory CD8(+) T cells, and resulted in superior protection against IAV.
Copyright ? 2013 Elsevier Inc. All rights reserved.
PMID:
24238342
[PubMed - in process]
http://www.ncbi.nlm.nih.gov/pubmed/24238342
Lung Airway-Surveilling CXCR3(hi) Memory CD8(+) T Cells Are Critical for Protection against Influenza A Virus.
Sl?tter B, Pewe LL, Kaech SM, Harty JT.
Source
Department of Microbiology, University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA.
Abstract
Inducing memory CD8(+) T cells specific for conserved antigens from influenza A virus (IAV) is a potential strategy for broadly protective vaccines. Here we show that memory CD8(+) T cells in the airways played an important role in early control of IAV. Expression of the chemokine receptor CXCR3 was critical for memory CD8(+) T cells to populate the airways during the steady state and vaccination approaches were designed to favor the establishment of memory CD8(+) T cells in the airways. Specifically, we found that interleukin-12 (IL-12) signaling shortly after immunization limited CXCR3 expression on memory CD8(+) T cells. Neutralization of IL-12 or adjuvants that did not induce high amounts of IL-12 enhanced CXCR3 expression, sustained airway localization of memory CD8(+) T cells, and resulted in superior protection against IAV.
Copyright ? 2013 Elsevier Inc. All rights reserved.
PMID:
24238342
[PubMed - in process]
http://www.ncbi.nlm.nih.gov/pubmed/24238342