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Related Experiment Videos

Membrane repair and immunological danger.

Norma W Andrews1

  • 1Section of Microbial Pathogenesis, Department of Cell Biology, Yale University School of Medicine, 295 Congress Avenue, New Haven, Connecticut 06536, USA. norma.andrews@yale.edu

EMBO Reports
|September 3, 2005
PubMed
Summary

Cell damage triggers immune responses via endogenous adjuvants. Efficient plasma membrane repair balances immune tolerance and autoimmunity, preventing constant immune activation.

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Area of Science:

  • Immunology
  • Cell Biology
  • Autoimmunity

Background:

  • Immune responses require second signals from adjuvant molecules.
  • Pathogen-associated molecular patterns act as exogenous adjuvants.
  • Endogenous 'danger' signals from injured cells also function as adjuvants.

Purpose of the Study:

  • To investigate the role of endogenous adjuvants in immune responses.
  • To explore how the immune system distinguishes self from danger signals.
  • To understand the balance between immune tolerance and autoimmunity.

Main Methods:

  • Review of recent evidence on endogenous adjuvants.
  • Analysis of observations in synaptotagmin-VII-deficient mice.
  • Hypothesizing the role of plasma membrane repair in immune regulation.

Main Results:

  • Endogenous adjuvants explain immune responses to tumors and self-tissues.
  • Defective plasma membrane repair in synaptotagmin-VII-deficient mice correlates with autoimmunity.
  • Efficient wound sealing of plasma membranes may prevent constant immune activation.

Conclusions:

  • Plasma membrane resealing efficiency is crucial for maintaining immune tolerance.
  • Defects in cellular repair mechanisms can predispose to autoimmunity.
  • Understanding endogenous adjuvants and cell repair is key to immune regulation.

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