Minimal Epitopes Expressed in a Recombinant Polyepitope Protein Are Processed and Presented to CD8+ Cytotoxic T Cells: Implications for Vaccine Design

Overview

Journal Proc Natl Acad Sci U S A

Specialty Science

Date 1995 Jun 20

PMID 7541138

Citations 31

Authors

S A Thomson

R Khanna

J Gardner

S R Burrows

B Coupar

D J Moss

A Suhrbier

Affiliations

Soon will be listed here.

Abstract

The epitopes recognized by CD8+ cytotoxic T lymphocytes (CTL) are generated from cytosolic proteins by proteolytic processing. The nature of the influences exerted by the sequences flanking CTL epitopes on these processing events remains controversial. Here we show that each epitope within an artificial polyepitope protein containing nine minimal CD8+ CTL epitopes in sequence was processed and presented to appropriate CTL clones. Natural flanking sequences were thus not required to direct class I proteolytic processing. In addition, unnatural flanking sequences containing other CTL epitopes did not interfere with processing. The ability of every CTL epitope to be effectively processed from a protein containing only CTL epitopes is likely to find application in the construction of recombinant polyepitope CTL vaccines.

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