The Journal of Experimental Medicine
BioLegend: Antibody Reagents
  Home | Help | Feedback | Subscriptions | Archive | Search | Table of Contents

Published online 6 June 1999.
This Article
Right arrow Full Text
Right arrow Full Text (PDF, 400K)
Right arrow Alert me when this article is cited
Right arrow Citation Map
Services
Right arrow Email this article
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new content in the JEM
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Singh-Jasuja, H.
Right arrow Articles by Schild, H.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Singh-Jasuja, H.
Right arrow Articles by Schild, H.
Social Bookmarking
 Add to CiteULike   Add to Complore   Add to Connotea   Add to Del.icio.us   Add to Digg   Add to Reddit   Add to Technorati  
What's this?
© The Rockefeller University Press, 0022-1007/2000/6/1965/ $5.00
The Journal of Experimental Medicine, Volume 191, Number 11, June 5, 2000 1965-1974


Original Article

Cross-Presentation of Glycoprotein 96–associated Antigens on Major Histocompatibility Complex Class I Molecules Requires Receptor-mediated Endocytosis

Harpreet Singh-Jasujaa, René E.M. Toesb, Pieter Speec, Christian Münzd, Norbert Hilfa, Stephen P. Schoenbergerb, Paola Ricciardi-Castagnolie, Jacques Neefjesc, Hans-Georg Rammenseea, Danièle Arnold-Schilda, and Hansjörg Schilda
a Institute for Cell Biology, Department of Immunology, University of Tübingen, D-72076 Tübingen, Germany
b Department of Immunohematology and Transfusion Bank, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
c Division of Tumor Biology, The Netherlands Cancer Institute, 1066 CX Amsterdam, The Netherlands
d Laboratory of Cellular Physiology and Immunology, The Rockefeller University, New York, New York 10021
e Department of Biotechnology and Bioscience, University of Milano-Bicocca, 20126 Milan, Italy

Correspondence to: Hansjörg Schild, Institute for Cell Biology, Department of Immunology, University of Tübingen, Auf der Morgenstelle 15, D-72076 Tübingen, Germany. Tel:49-7071-2980992 Fax:49-7071-295653 E-mail:hansjoerg.schild{at}uni-tuebingen.de.

Heat shock proteins (HSPs) like glycoprotein (gp)96 (glucose-regulated protein 94 [grp94]) are able to induce specific cytotoxic T lymphocyte (CTL) responses against cells from which they originate. Here, we demonstrate that for CTL activation by gp96-chaperoned peptides, specific receptor-mediated uptake of gp96 by antigen-presenting cells (APCs) is required. Moreover, we show that in both humans and mice, only professional APCs like dendritic cells (DCs), macrophages, and B cells, but not T cells, are able to bind gp96. The binding is saturable and can be inhibited using unlabeled gp96 molecules. Receptor binding by APCs leads to a rapid internalization of gp96, which colocalizes with endocytosed major histocompatibility complex (MHC) class I and class II molecules in endosomal compartments. Incubation of gp96 molecules isolated from cells expressing an adenovirus type 5 E1B epitope with the DC line D1 results in the activation of E1B-specific CTLs. This CTL activation can be specifically inhibited by the addition of irrelevant gp96 molecules not associated with E1B peptides. Our results demonstrate that only receptor-mediated endocytosis of gp96 molecules leads to MHC class I–restricted re-presentation of gp96-associated peptides and CTL activation; non–receptor-mediated, nonspecific endocytosis is not able to do so. Thus, we provide evidence on the mechanisms by which gp96 is participating in the cross-presentation of antigens from cellular origin.

Key Words: heat shock protein–peptide complex, cross-priming, receptor-mediated endocytosis, cytotoxic T lymphocyte activation, dendritic cell


Add to CiteULike CiteULike   Add to Complore Complore   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us   Add to Digg Digg   Add to Reddit Reddit   Add to Technorati Technorati    What's this?


This article has been cited by other articles:



  Home | Help | Feedback | Subscriptions | Archive | Search
TABLE OF CONTENTS