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Regulation of NF-κB by the CARD proteins

Changying Jiang1, Xin Lin

  • 1Department of Molecular and Cellular Oncology, The University of Texas, M D Anderson Cancer Center, Houston, TX 77030, USA.

Immunological Reviews
|March 23, 2012
PubMed

Insights

Scaffold proteins with caspase-recruitment domains (CARD) are crucial for activating nuclear factor-kappa B (NF-κB). This review details their roles in diverse signaling pathways, including those initiated by antigen receptors and G protein-coupled receptors.

Area of Science:

  • Molecular Biology
  • Cell Signaling
  • Immunology

Background:

  • Scaffold proteins are key regulators of signal transduction, linking receptors to effectors.
  • Caspase-recruitment domain (CARD) containing scaffold proteins have emerged as critical players in cellular signaling.
  • Many CARD proteins are involved in activating nuclear factor-kappa B (NF-κB), a central transcription factor.

Purpose of the Study:

  • To review the contributions of CARD proteins to NF-κB activation across various signaling cascades.
  • To highlight the roles of the CARMA family of CARD proteins based on personal research experiences.
  • To summarize recent advancements in understanding CARD protein functions in response to diverse receptor types.

Main Methods:

  • Literature review and synthesis of existing research on CARD proteins and NF-κB.
  • Analysis of signaling pathways involving antigen receptors, G protein-coupled receptors, receptor tyrosine kinases, and C-type lectin receptors.
  • Inclusion of personal research findings on CARMA family proteins.

Main Results:

  • CARD proteins are integral to multiple signaling pathways that culminate in NF-κB activation.
  • The CARMA family of CARD proteins plays significant roles in immune and inflammatory responses.
  • Diverse receptor types, including GPCRs and RTKs, utilize CARD proteins to modulate NF-κB signaling.

Conclusions:

  • CARD proteins are essential mediators of NF-κB activation in response to a wide array of stimuli.
  • Understanding CARD protein function provides insights into immune regulation and inflammatory diseases.
  • Future research on CARD proteins will likely uncover further roles in cellular signaling and disease pathogenesis.

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