Differential presentation of endogenous and exogenous hepatitis B surface antigens influences priming of CD8+ T cells in an epitope‐specific manner
Differential presentation of endogenous and exogenous hepatitis B surface antigens influences priming of CD8+ T cells in an epitope‐specific manner
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内源性和外源性乙型肝炎表面抗原的差异呈现以表位特异性方式影响 CD8 T 细胞的启动
DOI:
10.1002/eji.201343933
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发表时间:
1981
影响因子:
5.4
通讯作者:
Schirmbeck R
中科院分区:
文献类型:
--
作者:
Riedl P;Reiser M;Stifter K;Krieger J;Schirmbeck R
Little is known about whether presentation of endogenous and exogenous hepatitis B virus (HBV) surface antigens on APCs targeted by vaccination and/or virus‐harboring hepatocytes influences de novo priming of CD8+T cells. We showed that surface antigen‐expressing transfectants exclusively display a Kb/S190 epitope, whereas cells pulsed with recombinant surface particles (rSPs) exclusively present a Kb/S208 epitope to CD8+T cells. The differential presentation of these epitopes largely reflects the selective, but not exclusive, priming of Kb/S190‐ and Kb/S208‐specific T cells in C57BL/6 mice by endogenous/DNA‐ or exogenous/protein‐based vaccines, respectively. Silencing the Kb/S190 epitope (Kb/S190V194F) in antigen‐expressing vectors rescued the presentation of the Kb/S208 epitope in stable transfectants and significantly enhanced priming of Kb/S208‐specific T cells in C57BL/6 mice. A Kb/S190‐mediated immunodominance operating in surface antigen‐expressing cells, but not in rSP‐pulsed cells, led to an efficient suppression in the presentation of the Kb/S208 epitope and a consequent decrease in the priming of Kb/S208‐specific T cells. This Kb/S190‐mediated immunodominance also operated in 1.4HBV‐Smuttransgenic (tg) hepatocytes selectively expressing endogenous surface antigens and allowed priming of Kb/S208‐ but not Kb/S190‐specific T cells in 1.4HBV‐Smuttg mice. However, IFN‐γ+Kb/S208‐specific T cells could not inhibit HBV replication in the liver of 1.4HBV‐Smuttg mice. These results have practical implications for the design of T‐cell‐stimulating therapeutic vaccines.
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影响因子:
5.4
作者:
Detlef Stober<;Z. Trobonjača;J. Reimann;R. Schirmbeck
通讯作者:
R. Schirmbeck
影响因子:
2.6
作者:
Z. Janowicz;K. Melber;A. Merckelbach;E. Jacobs;N. Harford;M. Comberbach;C. Hollenberg
通讯作者:
C. Hollenberg
DOI:
10.4049/jimmunol.168.12.6253
发表时间:
2002
期刊:
The Journal of Immunology
影响因子:
--
作者:
R. Schirmbeck;D. Stober;S. El Kholy;Petra Riedl;J. Reimann
通讯作者:
J. Reimann
影响因子:
4.4
作者:
A. Stryhn;L. Pedersen;T. Romme;A. C. Olsen;M. Nissen;C. Thorpe;S. Buus
通讯作者:
S. Buus
影响因子:
5.4
作者:
R. Schirmbeck;N. Dikopoulos;M. Kwissa;F. Leithäuser;K. Lamberth;S. Buus;K. Melber;J. Reimann
通讯作者:
J. Reimann