期刊
JOURNAL OF IMMUNOLOGY
卷 184, 期 2, 页码 736-745出版社
AMER ASSOC IMMUNOLOGISTS
DOI: 10.4049/jimmunol.0900726
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资金
- Naito Foundation
- Mochida Memorial Foundation for Medical and Pharmaceutical Research [19390136, 19590489]
- Ministry of Education, Science. Sports and Culture of Japan [19041011]
- Core Research for Evolutional Science and Technology, Japan Science and Technology Agency
- Grants-in-Aid for Scientific Research [19041011] Funding Source: KAKEN
Nucleotide oligomerization binding domain (Nod)-like receptors are critical cytosolic sensors for the recognition of bacterial peptidoglycan. However, their role in the induction of dendritic cell (DC)-mediated cross-priming remains unclear. In this study, we demonstrate that injecting ligands for Nod1 and Nod2 along with Ag into wild-type mice significantly enhanced the cross-priming of Ag-specific CD8(+) T cells by CD8 alpha(+) DCs, as assessed from the expansion of IFN-gamma(+) CD8(+) T cells, CTL activity against Ag-pulsed targets, and the rejection of transplanted tumors expressing the cognate Ag. The enhancement of CD8 alpha(+) DC-mediated cross-priming was likely due to the upregulation of Ag cross-presentation and of costimulatory molecules. Our findings collectively indicate that Nod1/2 signaling is critical for the optimal induction of DC cross-priming in vivo, which may offer an alternative therapeutic pathway in cancer and hosts refractory to TLR signals or paralyzed by viral evasion strategy. The Journal of Immunology, 2010,184: 736-745.
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