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Related Concept Videos

Introduction to Innate and Adaptive Immunity01:21

Introduction to Innate and Adaptive Immunity

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The human immune system is a complex defense mechanism that protects the body from harmful pathogens and foreign substances. It comprises two crucial components: innate and adaptive immunity.
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The innate immune response is an immediate and non-specific response against pathogens, acting swiftly to prevent the spread of infections. The primary cells involved in this response are phagocytes and natural killer (NK) cells.
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Protein-protein Interfaces02:04

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Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a...
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Antigens Involved in Adaptive Immunity01:26

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An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
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Quantification of Protein Interaction Network Dynamics using Multiplexed Co-Immunoprecipitation
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Innate immunity interactome dynamics.

Asmaa Elzawahry1, Ashwini Patil2, Yutaro Kumagai3

  • 1Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo, Japan. ; Graduate school of Frontier Sciences, The University of Tokyo, Kashiwa-shi, Chiba, Japan.

Gene Regulation and Systems Biology
|January 24, 2014
PubMed
Summary
This summary is machine-generated.

The dynamic protein interactions in innate immunity were mapped using gene expression and protein interaction data. This revealed key protein modules and conserved interactions crucial for immune response and linked to cancer pathways.

Keywords:
differential networksgene expressioninnate immunityinteractome dynamicsprotein-protein interactions

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Area of Science:

  • Immunology
  • Systems Biology
  • Bioinformatics

Background:

  • Innate immune responses rely on dynamic protein-protein interactions, not just static maps.
  • Understanding these dynamic interactions is crucial for deciphering immune signaling.

Purpose of the Study:

  • To map the dynamic changes in the protein-protein interaction network during innate immune response.
  • To identify key protein modules and conserved interactions involved in the immune response to lipopolysaccharide (LPS).

Main Methods:

  • Combined gene expression data from LPS-stimulated dendritic cells with protein-protein interaction data.
  • Constructed differential networks and identified protein modules at various stages of the immune response.
  • Developed novel measures to quantify network differences over time.

Main Results:

  • Identified dynamic changes in the interactome, with a peak interaction ratio at 1 hour post-LPS stimulation.
  • Discovered conserved core interactions and enriched pathways, including those related to circadian rhythms, cancer, and p53.
  • Found S100A8 down-regulation in the toll-like receptor subnetwork after LPS stimulation.

Conclusions:

  • The study provides a dynamic map of the innate immune interactome, highlighting key regulatory modules and conserved interactions.
  • Protein complexes identified play roles in immunity, circadian rhythms, and cancer pathways, reinforcing the link between immunity and cancer.