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Measuring Composition of CD95 Death-Inducing Signaling Complex and Processing of Procaspase-8 in this Complex
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Immunoprecipitation of Death Inducing Signaling Complex by Caspase-8

Andrei Alexandru Constantinescu1,2, Aymeric Morlé1,2, Olivier Micheau3,4

  • 1INSERM, UMR866, "Equipe labellisée Ligue contre le Cancer" and Laboratoire d'Excellence LipSTIC, Dijon, 21079, France.

Methods in Molecular Biology (Clifton, N.J.)
|January 13, 2017
PubMed

Insights

This study details a method for immunoprecipitating caspase-8 complexes. This technique allows for the analysis of protein interactions involved in cell death pathways.

Area of Science:

  • Cellular Biology
  • Immunology
  • Biochemistry

Background:

  • Immunoprecipitation is crucial for studying protein interactions.
  • Previous methods for CD95/Fas complex analysis relied on specific antibodies or ligands.
  • Analyzing protein complexes requires efficient and reliable techniques.

Purpose of the Study:

  • To describe a detailed method for immunoprecipitating and analyzing caspase-8 containing complexes.
  • To provide a reliable protocol for investigating endogenous protein interactions.

Main Methods:

  • Immunoprecipitation using a commercial antibody against caspase-8.
  • Analysis of immunoprecipitated complexes by immunoblotting.
  • Utilizing protein A/G-coupled Sepharose beads for complex recovery.

Main Results:

  • A detailed protocol for caspase-8 complex immunoprecipitation and immunoblot analysis is presented.
  • The method allows for the investigation of endogenous caspase-8 interactions.

Conclusions:

  • The described method offers a robust approach for studying caspase-8 protein complexes.
  • This technique facilitates research into the molecular mechanisms of cell death pathways.

Keywords:
Caspase-8DISCElectrophoresisImmunoblotsImmunoprecipitationProtein extracts

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