Local not systemic modulation of dendritic cell S1P receptors in lung blunts virus-specific immune responses to influenza

被引:57
作者
Marsolais, David [1 ]
Hahm, Bumsuk [4 ,5 ]
Edelmann, Kurt H. [3 ]
Walsh, Kevin B. [3 ]
Guerrero, Miguel [2 ]
Hatta, Yasuko [6 ]
Kawaoka, Yoshihiro [6 ,7 ,8 ]
Roberts, Edward [2 ]
Oldstone, Michael B. A. [3 ]
Rosen, Hugh [1 ]
机构
[1] Scripps Res Inst, Dept Chem Physiol & Immunol, La Jolla, CA 92037 USA
[2] Scripps Res Inst, Dept Chem, La Jolla, CA 92037 USA
[3] Scripps Res Inst, Dept Immunol & Microbial Sci, La Jolla, CA 92037 USA
[4] Univ Missouri, Dept Surg, Columbia, MO USA
[5] Univ Missouri, Dept Mol Microbiol & Immunol, Columbia, MO USA
[6] Univ Wisconsin, Dept Pathobiol Sci, Madison, WI 53706 USA
[7] Univ Tokyo, Dept Microbiol & Immunol, Div Virol, Tokyo, Japan
[8] Univ Tokyo, Inst Med Sci, Int Res Ctr Infect Dis, Tokyo, Japan
关键词
D O I
10.1124/mol.108.048769
中图分类号
R9 [药学];
学科分类号
1007 ;
摘要
The mechanism by which locally delivered sphingosine analogs regulate host response to localized viral infection has never been addressed. In this report, we show that intratracheal delivery of the chiral sphingosine analog (R)-2-amino-4-(4-heptyloxyphenyl)-2methylbutanol (AAL-R) or its phosphate ester inhibits the T-cell response to influenza virus infection. In contrast, neither intraperitoneal delivery of AAL-R nor intratracheal instillation of the nonphosphorylatable stereoisomer AAL-S suppressed virus-specific T-cell response, indicating that in vivo phosphorylation of AAL-R and sphingosine 1-phosphate (S1P) receptor modulation in lungs is essential for immunomodulation. Intratracheal delivery of water-soluble S1P 1 receptor agonist at doses sufficient to induce systemic lymphopenia did not inhibit virus-specific cell response, indicating that S1P(1) is not involved in the immunosuppressive activities of AAL-R and that immunosuppression acts independently of naive lymphocyte recirculation. Accumulation of dendritic cells (DCs) in draining lymph nodes was inhibited by intratracheal but not intraperitoneal delivery of AAL-R. Direct modulation of DCs is demonstrated by the impaired ability of virus-infected bone marrow-derived DCs treated in vitro with AAL-R to trigger in vivo T-cell response after adoptive transfer to the airways. Thus, our results suggest that locally delivered sphingosine analogs induce immunosuppression by modulating S1P receptors other than S1P(1) or S1P(2) on dendritic cells in the lungs after influenza virus infection.
引用
收藏
页码:896 / 903
页数:8
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