H2-M3-restricted T cell response to infection

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Updated: Aug 7, 2026

Use of Single Chain MHC Technology to Investigate Co-agonism in Human CD8+ T Cell Activation
12:09

Use of Single Chain MHC Technology to Investigate Co-agonism in Human CD8+ T Cell Activation

Published on: February 28, 2019

Angela Colmone1, Chyung-Ru Wang

  • 1Department of Pathology, University of Chicago, JFK R422 924 E 57th St., Chicago, IL 60637, USA.

Microbes and Infection
|July 11, 2006
PubMed

Insights

Major histocompatibility complex class Ib molecule H2-M3 presents N-formylated peptides to CD8+ T cells. These H2-M3-restricted T cells are crucial for early anti-microbial responses against bacterial infections.

Area of Science:

  • Immunology
  • Microbiology
  • Molecular Biology

Background:

  • H2-M3 is a major histocompatibility complex class Ib molecule.
  • It presents N-formylated peptides to CD8+ T cells.
  • Bacterial, but not eukaryotic, translation starts with N-formyl methionine.

Purpose of the Study:

  • To investigate the role of H2-M3-restricted CD8+ T cells in anti-microbial responses.
  • To understand the significance of N-formylated peptides in T cell recognition.

Main Methods:

  • Analysis of H2-M3 peptide presentation.
  • Characterization of CD8+ T cell responses to bacterial peptides.

Main Results:

  • H2-M3 presents N-formylated peptides derived from prokaryotic translation.
  • H2-M3-restricted CD8+ T cells are activated by these peptides.
  • These T cells form a non-redundant early component of the anti-microbial response.

Conclusions:

  • H2-M3-restricted T cells play a vital role in detecting bacterial infections.
  • The presentation of N-formylated peptides by H2-M3 is key to this early immune surveillance.

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