influenza;
lipopeptide;
lung;
T cells;
vaccination;
D O I:
10.1002/eji.200535217
中图分类号:
R392 [医学免疫学];
Q939.91 [免疫学];
学科分类号:
100102 ;
摘要:
The longevity of the influenza virus-specific CD8(+) T cell response following intranasal delivery of a synthetic lipopeptide was investigated and the characteristics and location of the cells associated with viral clearance examined. The lipopeptide, incorporating an epitope for CD8(+) T cells and another for CD4(+) T cells with the lipid moiety S-[2,3bis(palmitoyloxy)propyl]cysteine (Pam2Cys) attached, induced potent and long-lived pulmonary protection. Both the lipopeptide and its largely unprotective non-lipidated counterpart elicited comparable numbers of CD8(+) T cells in the spleen, which was the main location of the memory pool. However, the lipopeptide, unlike the non-lipidated peptide, also induced a substantial memory population that remained in the lungs and was rapidly activated upon viral challenge months later. These lipopeptide-induced lung-resident CD8(+) T cells were also very similar in number and IFN-gamma-secreting potential to those induced by prior exposure to the virus itself and are likely mediators of initial viral clearance prior to recruitment from the expanding lymph node T cell pool. Significant clearing responses were demonstrated as late as 9 months post-lipopeptide vaccination. This study shows that CD8(+) T cells primed by the lipopeptide are not only long-lived but can take up residence in the lung where they are important early mediators of pulmonary protection.
机构:
Cedars Sinai Med Ctr, Ophthalmol Res Labs, Burns & Allen Res Inst, Los Angeles, CA 90048 USACedars Sinai Med Ctr, Ophthalmol Res Labs, Burns & Allen Res Inst, Los Angeles, CA 90048 USA
BenMohamed, L
;
Wechsler, SL
论文数: 0引用数: 0
h-index: 0
机构:
Cedars Sinai Med Ctr, Ophthalmol Res Labs, Burns & Allen Res Inst, Los Angeles, CA 90048 USACedars Sinai Med Ctr, Ophthalmol Res Labs, Burns & Allen Res Inst, Los Angeles, CA 90048 USA
Wechsler, SL
;
Nesburn, AB
论文数: 0引用数: 0
h-index: 0
机构:
Cedars Sinai Med Ctr, Ophthalmol Res Labs, Burns & Allen Res Inst, Los Angeles, CA 90048 USACedars Sinai Med Ctr, Ophthalmol Res Labs, Burns & Allen Res Inst, Los Angeles, CA 90048 USA
机构:
Cedars Sinai Med Ctr, Ophthalmol Res Labs, Burns & Allen Res Inst, Los Angeles, CA 90048 USACedars Sinai Med Ctr, Ophthalmol Res Labs, Burns & Allen Res Inst, Los Angeles, CA 90048 USA
BenMohamed, L
;
Wechsler, SL
论文数: 0引用数: 0
h-index: 0
机构:
Cedars Sinai Med Ctr, Ophthalmol Res Labs, Burns & Allen Res Inst, Los Angeles, CA 90048 USACedars Sinai Med Ctr, Ophthalmol Res Labs, Burns & Allen Res Inst, Los Angeles, CA 90048 USA
Wechsler, SL
;
Nesburn, AB
论文数: 0引用数: 0
h-index: 0
机构:
Cedars Sinai Med Ctr, Ophthalmol Res Labs, Burns & Allen Res Inst, Los Angeles, CA 90048 USACedars Sinai Med Ctr, Ophthalmol Res Labs, Burns & Allen Res Inst, Los Angeles, CA 90048 USA