The proteasome inhibitor lactacystin prevents the generation of an endoplasmic reticulum leader-derived T cell epitope

Gallimore, Awen Myfanwy ORCID: https://orcid.org/0000-0001-6675-7004, Schwarz, K., van den Broek, M., Hengartner, H. and Groettrup, M. 1998. The proteasome inhibitor lactacystin prevents the generation of an endoplasmic reticulum leader-derived T cell epitope. Molecular Immunology 35 (10) , pp. 581-591.

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Abstract

The presentation of viral antigens on MHC class I molecules requires their intracellular fragmentation into peptides of appropriate length and anchor residue positions. Evidence has accumulated that the proteasome is the endoprotease in charge of the generation of MHC class I ligands in the cytoplasm. The generation of T cell epitopes derived from the leader peptides of endoplasmic reticulum (ER) targeted proteins, however. has been reported to be independent of the proteasome. Here we show that the H-2Db restricted antigen presentation of the immunodominant T cell epitope derived from the ER leader of the glycoprotein of lymphocytic choriomeningitis virus (LCMV) is completely abolished by administration of the proteasome inhibitor lactacystin. Thus our data support the role of the proteasome in class I restricted antigen processing and extend it to an ER leader derived epitope from a viral glycoprotein.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Medicine Systems Immunity Research Institute (SIURI)
Subjects:	R Medicine > R Medicine (General)
Publisher:	National Institute of Health
ISSN:	0161-5890
Related URLs:	http://www.ncbi.nlm.nih.gov/pubmed/98237...
Last Modified:	27 Oct 2022 10:20
URI:	https://orca.cardiff.ac.uk/id/eprint/69763

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