Dendritic cells pulsed with exogenous hepatitis B surface antigen particles efficiently present epitopes to MHC class I‐restricted cytotoxic T cells
Dendritic cells pulsed with exogenous hepatitis B surface antigen particles efficiently present epitopes to MHC class I‐restricted cytotoxic T cells
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用外源乙型肝炎表面抗原颗粒脉冲的树突状细胞有效地将表位呈递给 MHC I 类限制性细胞毒性 T 细胞
DOI:
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发表时间:
2002
影响因子:
5.4
通讯作者:
R. Schirmbeck
中科院分区:
文献类型:
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作者:
Detlef Stober<;Z. Trobonjača;J. Reimann;R. Schirmbeck
Ld‐ and Kb‐binding epitopes processed by murine dendritic cells (DC) pulsed with exogenous, particulate hepatitis B surface antigen (HBsAg) are presented to cytotoxic T lymphocytes (CTL). The specific and dose‐dependent induction of IFN‐γ release and cytotoxicity in CTL by metabolically active DC did not depend on antigenic peptides contaminating the particles, was cytochalasin D resistant, independent of the maturation state of DC, and blocked by primaquine, amiloride and NH4Cl (indicating involvement of acid proteolysis). The specific immunostimulatory phenotype of pulsed DC was maintained for about 3 h after the end of the pulse but rapidly decayed thereafter. Processing of Ld‐ and Kb‐binding epitopes from exogenous HBsAg particles by pulsed DC for presentation was TAP independent. Surface‐associated ‘empty’ (presentation‐deficient) 64+ Ld molecules (defined by the mAb 64‐3‐7), but not trimeric (presentation‐competent) 30+ Ld molecules (defined by the mAb 30‐5‐7) had to be available during the pulse of DC with exogenous HBsAg particles to generate 30+ Ldmolecules that present the antigenic S28–39 peptide. Exogenous β2‐microglobulin present during the pulse of DC with HBsAg particles facilitated presentation of Ld‐ and Kb‐restricted epitopes. DC generated from bone marrow progenitors in vitro, as well as splenic and liver DC (generated in vivo) presented epitopes to specific CTL. HBsAg particles thus efficiently enter an alternative processing pathway in DC that leads to presentation of epitopes to MHC class I‐restricted CTL.
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DOI:
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发表时间:
1998
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
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作者:
Ishikawa,T;Kono,D;Chung,J;Fowler,P;Theofilopoulos,A;Kakumu,S;Chisari,FV
通讯作者:
Chisari,FV
DOI:
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发表时间:
1996
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Song,R;Harding,CV
通讯作者:
Harding,CV
DOI:
--
发表时间:
1999
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Wild,J;Grusby,MJ;Schirmbeck,R;Reimann,J
通讯作者:
Reimann,J
DOI:
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发表时间:
1991
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Hochman,JH;Jiang,H;Matyus,L;Edidin,M;Pernis,B
通讯作者:
Pernis,B