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CD14 is a pattern recognition receptor

J Pugin1, I D Heumann, A Tomasz

  • 1Scripps Research Institute, Department of Immunology, La Jolla, California 92037.

Immunity
|September 1, 1994
PubMed
Summary
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CD14 acts as a key receptor in mammalian cells, recognizing diverse bacterial components to trigger immune responses. This discovery illuminates innate microbial immunity and suggests new therapeutic avenues for septic shock.

Area of Science:

  • Immunology
  • Microbiology
  • Molecular Biology

Background:

  • Septic shock is a life-threatening condition caused by various bacterial pathogens.
  • Mammalian cells recognize bacterial components to initiate immune responses, which can be beneficial or detrimental.

Purpose of the Study:

  • To investigate the role of CD14 in mammalian cell activation by bacterial envelope constituents.
  • To define the molecular basis of innate microbial immunity.

Main Methods:

  • The study involved analyzing the interaction between CD14 and bacterial envelope components from Gram-negative, Gram-positive, and mycobacteria.
  • Cell activation assays were performed to assess the signaling pathways initiated by CD14 recognition.

Main Results:

Related Experiment Videos

  • CD14 was identified as a crucial receptor mediating cell activation in response to a wide range of bacterial envelope components.
  • This recognition extends to Gram-negative, Gram-positive bacteria, and mycobacteria.

Conclusions:

  • CD14 functions as a central receptor for sensing diverse bacterial constituents, initiating innate immune responses.
  • These findings provide a molecular understanding of innate microbial immunity and open possibilities for novel therapeutics targeting septic shock.