Quantification of eIF2alpha phosphorylation during immunogenic cell death

Methods Enzymol. 2019:629:53-69. doi: 10.1016/bs.mie.2019.04.010. Epub 2019 Apr 27.

Abstract

Immunogenic cell death (ICD) is a particular modality of cell death that can be triggered by selected anticancer chemotherapeutics. Tumor cells undergoing ICD can induce an adaptive anticancer immune response that targets residual cancer cells with the same antigenic profile. The activation of a full-blown immune response against the tumor antigen is preceded by the release or exposure of danger associated molecular patterns (DAMPs) by tumor cells that stimulate the attraction, activation and maturation of dendritic cells and eventually the antigen-specific priming of cytotoxic T lymphocytes (CTLs). The phosphorylation of the eukaryotic translation initiation factor (EIF2A) is a pathognomonic characteristic of ICD, which governs the release/exposure of DAMPs such as ATP and calreticulin and thus the immunogenicity of cell death. Here we describe techniques to detect eIF2alpha phosphorylation for the assessment of ICD.

Keywords: Cancer; Endoplasmic reticulum stress; Immune response; Mitoxantrone; Oxaliplatin.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alarmins / immunology
  • Alarmins / metabolism
  • Antigens, Neoplasm / immunology*
  • Antigens, Neoplasm / metabolism
  • Cell Culture Techniques / instrumentation
  • Cell Culture Techniques / methods
  • Cell Line, Tumor
  • Dendritic Cells / immunology
  • Dendritic Cells / metabolism
  • Doxorubicin / pharmacology
  • Epitopes, T-Lymphocyte / immunology
  • Epitopes, T-Lymphocyte / metabolism
  • Eukaryotic Initiation Factor-2 / immunology
  • Eukaryotic Initiation Factor-2 / isolation & purification*
  • Eukaryotic Initiation Factor-2 / metabolism
  • Fluorescent Antibody Technique, Direct / instrumentation
  • Fluorescent Antibody Technique, Direct / methods
  • Humans
  • Image Processing, Computer-Assisted / instrumentation
  • Image Processing, Computer-Assisted / methods
  • Immunogenic Cell Death / drug effects
  • Immunogenic Cell Death / immunology*
  • Microscopy, Fluorescence / instrumentation
  • Microscopy, Fluorescence / methods
  • Neoplasms / immunology*
  • Neoplasms / pathology
  • Oxaliplatin / pharmacology
  • Phosphorylation / immunology
  • Software
  • T-Lymphocytes, Cytotoxic / metabolism

Substances

  • Alarmins
  • Antigens, Neoplasm
  • Epitopes, T-Lymphocyte
  • Eukaryotic Initiation Factor-2
  • Oxaliplatin
  • Doxorubicin