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Related Concept Videos

Special Features of Adaptive Immunity01:20

Special Features of Adaptive Immunity

The adaptive immune system, a crucial component of the overall immune response, offers a highly specialized defense against pathogens. It involves specific cell types and features, enabling it to combat infections effectively and efficiently.
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

Overview
Introduction to Innate and Adaptive Immunity01:21

Introduction to Innate and Adaptive Immunity

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.
Innate immunity is the body's natural, nonspecific defense system that acts quickly to protect against pathogens. It incorporates physical barriers like skin and mucous membranes and cellular elements such as phagocytes and natural killer cells. This part of our immune system provides an immediate,...
T Cell Activation and Clonal Selection01:22

T Cell Activation and Clonal Selection

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...
Antigen Processing Pathways01:31

Antigen Processing Pathways

MHC molecules are key players in the immune response, enabling T cells to recognize and respond to specific antigens. They are present on the surface of all nucleated cells in the body and are instrumental in presenting antigens to T cells and activating them. T cells recognize the MHC-antigen complex and initiate an immune response. MHC class I and MHC class II are two main types of MHC molecules, each associated with a distinct antigen processing pathway.
MHC Class I: Presenting Endogenous...
B Cell Activation and Differentiation01:24

B Cell Activation and Differentiation

The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...

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Related Experiment Video

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Development and Functional Characterization of Murine Tolerogenic Dendritic Cells
09:51

Development and Functional Characterization of Murine Tolerogenic Dendritic Cells

Published on: May 18, 2018

Innate and adaptive immune pathways to tolerance.

Catherine A Thornton1, Gareth Morgan

  • 1Institute of Life Science, School of Medicine, Swansea University, Swansea, UK. C.A.Thornton@swansea.ac.uk

Nestle Nutrition Workshop Series. Paediatric Programme
|August 28, 2009
PubMed
Summary

The study highlights how innate and adaptive immune responses, particularly involving dendritic cells and cytokines like TSLP, interact to regulate immune tolerance and allergy development. Understanding this interplay is crucial for advancing immunology research.

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15:33

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Area of Science:

  • Immunology
  • Molecular Biology

Background:

  • Innate and adaptive immunity are increasingly understood to function interdependently.
  • Pattern recognition receptors (PRRs) on epithelial and dendritic cells at mucosal surfaces are key innate immune components.
  • Adaptive immunity involves IgA, T-cell populations (Th1/Th2/Th17), and regulatory T cells.

Purpose of the Study:

  • To explore the intricate interplay between innate and adaptive immunity in the context of immune tolerance and allergy.
  • To emphasize the critical role of dendritic cells in bridging innate and adaptive immune responses.
  • To highlight the significance of cytokines such as TGF-beta, IL-10, and thymic stromal lymphopoietin (TSLP) in immune regulation.

Main Methods:

  • Review of existing scientific literature on immune responses and tolerance.
  • Analysis of the role of pattern recognition receptors, dendritic cells, and T-cell populations.
  • Examination of cytokine and chemokine signaling pathways.

Main Results:

  • Dendritic cells act as crucial links between innate and adaptive immunity.
  • The microenvironment of dendritic cells dictates T-cell differentiation into effector or regulatory subsets.
  • Cytokines like TGF-beta, IL-10, and TSLP are central mediators of immune responses.

Conclusions:

  • Immune tolerance and allergy development are governed by the complex interplay between innate immunity and immunoregulatory mechanisms.
  • Understanding these interactions is vital for developing novel therapeutic strategies for allergic diseases.
  • Further research into cytokine signaling and cell-cell interactions will advance the field of immunology.