Proteasomal targeting and minigene repetition improve cell-surface presentation of a transfected, modified melanoma tumour antigen.

Abstract:

:Melanoma antigen recognized by T cell 1 (MART-1) is regarded as a candidate peptide for vaccination against malignant melanoma, and it is of importance to develop strategies to improve the vaccine-elicited T-cell activation towards MART-1. T-cell activation is, among other determinants, dependent on the density of specific major histocompatibility complex-peptide complexes on the surface of the antigen-presenting cell. In this study, we explored the cell-surface presentation of a substituted MART-1 peptide encoded by transfected minigenes. We investigated the potential of proteasomal targeting compared to non-proteasomal targeting of the epitope to increase its cell-surface presentation. Furthermore, we explored the potential of incorporating multiple minigenes instead of one to increase cell-surface presentation. We show that both proteasomal targeting and repetition of the minigene increase cell-surface presentation of the epitope and propose both these approaches as potential strategies in DNA vaccines to increase MART-1-specific T-cell activation.

journal_name

Scand J Immunol

authors

Rasmussen AB,Zocca MB,Bonefeld CM,von Essen M,Lauritsen JP,Tomra S,Ødum N,Geisler C

doi

10.1111/j.0300-9475.2004.01374.x

keywords:

subject

Has Abstract

pub_date

2004-02-01 00:00:00

pages

220-7

issue

2

eissn

0300-9475

issn

1365-3083

pii

1374

journal_volume

59

pub_type

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