T-cell activation by lipopeptide antigens.

Abstract:

:The discovery of the CD1 antigen-presenting system reveals that T cells survey the lipid content of target cells via T-cell receptor (TCR) contact with CD1 bound to lipids, glycolipids and small molecules. Recently, CD1 proteins have been found to present mycobacterial lipopeptides that are involved in scavenging iron from infected cells. The mechanism of lipopeptide antigen presentation by CD1 involves the anchoring of antigens in the hydrophobic binding groove, resulting in exposure of the peptide moiety for TCR contact. These findings expand the range of known antigens for T cells and raise the intriguing possibility that CD1, similar to MHC class I and II molecules, enables T cells to discriminate among peptide sequences.

journal_name

Curr Opin Immunol

authors

Van Rhijn I,Zajonc DM,Wilson IA,Moody DB

doi

10.1016/j.coi.2005.04.006

subject

Has Abstract

pub_date

2005-06-01 00:00:00

pages

222-9

issue

3

eissn

0952-7915

issn

1879-0372

pii

S0952-7915(05)00050-6

journal_volume

17

pub_type

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