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T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
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Related Experiment Video

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Measuring Composition of CD95 Death-Inducing Signaling Complex and Processing of Procaspase-8 in this Complex
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CD95 Stimulation with CD95L and DISC Analysis.

Matthieu Le Gallo1,2,3, Patrick Legembre4,5,6

  • 1Centre Eugène Marquis, rue Bataille Flandres Dunkerque, 35042, Rennes, France.

Methods in Molecular Biology (Clifton, N.J.)
|January 13, 2017
PubMed
Summary
This summary is machine-generated.

This study details a method to isolate and analyze the CD95 protein complex. This technique aids in understanding immune responses and apoptosis in cells targeted by CD95L.

Keywords:
ApoptosisDeath receptorsFasFasLImmunoprecipitation

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Area of Science:

  • Immunology
  • Cell Biology
  • Molecular Biology

Background:

  • CD95 (also known as Fas or TNFRSF6) and its ligand CD95L (also known as FasL or TNFSF6) are critical for immune system regulation.
  • CD95L, expressed by activated T cells and NK cells, induces programmed cell death (apoptosis) in target cells, including cancer and virus-infected cells.
  • Understanding the CD95-mediated signaling pathway is crucial for developing targeted therapies.

Purpose of the Study:

  • To present a detailed methodology for immunoprecipitating the CD95 receptor.
  • To describe the subsequent analysis of protein complexes associated with CD95.
  • To investigate these interactions in cells treated with a specific cytotoxic form of CD95L (Ig-CD95L).

Main Methods:

  • Immunoprecipitation (IP) of CD95 from cell lysates.
  • Stimulation of cells with Ig-CD95L prior to lysis.
  • Analysis of immunoprecipitated proteins using techniques like Western blotting or mass spectrometry (details not specified in abstract).

Main Results:

  • The described method allows for the successful isolation of CD95 and its interacting partners.
  • The analysis reveals the protein complex associated with CD95 upon stimulation with Ig-CD95L.
  • This provides insights into the molecular mechanisms of CD95-mediated apoptosis.

Conclusions:

  • The presented immunoprecipitation method is effective for studying the CD95 protein complex.
  • This approach facilitates the investigation of immune surveillance and homeostasis mechanisms.
  • Further research can build upon this method to explore CD95 signaling in various cellular contexts.