A central role for HSC70 in regulating antigen trafficking and MHC class II presentation

Sarah N. Deffit, Janice Blum

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Cells rely on multiple intracellular trafficking pathways to capture antigens for proteolysis. The resulting peptides bind to MHC class II molecules to promote CD4+ T cell recognition. Endocytosis enhances the capture of extracellular and cell surface bound antigens for processing and presentation, while autophagy pathways shunt cytoplasmic and nuclear antigens for presentation in the context of MHC class II molecules. Understanding how physiological changes and cellular stress alter antigen trafficking and the repertoire of peptides presented by class II molecules remains challenging, yet important in devising novel approaches to boost immune responses to pathogens and tumors. An abundant, constitutively expressed cytoplasmic chaperone, HSC70 plays a central role in modulating antigen transport within cells to control MHC class II presentation during nutrient stress. HSC70 may serve as a molecular switch to modulate endocytic and autophagy pathways, impacting the source of antigens delivered for MHC class II presentation during cellular stress.

Original languageEnglish (US)
Pages (from-to)85-88
Number of pages4
JournalMolecular Immunology
Volume68
DOIs
StatePublished - Feb 11 2015

Fingerprint

Antigen Presentation
Antigens
Autophagy
Nuclear Antigens
Peptides
Surface Antigens
Endocytosis
Proteolysis
T-Lymphocytes
Food
Neoplasms

Keywords

  • Antigen presentation
  • Autophagy
  • Cell stress
  • HSC70
  • MHC class II molecules

ASJC Scopus subject areas

  • Molecular Biology
  • Immunology

Cite this

A central role for HSC70 in regulating antigen trafficking and MHC class II presentation. / Deffit, Sarah N.; Blum, Janice.

In: Molecular Immunology, Vol. 68, 11.02.2015, p. 85-88.

Research output: Contribution to journalArticle

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