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Related Concept Videos

Interactions Between Signaling Pathways01:19

Interactions Between Signaling Pathways

Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
The JAK-STAT Signaling Pathway01:20

The JAK-STAT Signaling Pathway

Several cytokine receptors have tightly bound Janus kinase or JAK proteins attached at their cytosolic tail. Small signaling molecules such as cytokines, growth hormones, or prolactins bind to the cytokine receptors and initiate their dimerization. The dimerization brings the cytosolic JAKs together that trans-phosphorylate and activates each other. The activated JAKs now phosphorylate cytosolic tails of the cytokine receptors, which serve as binding sites for adaptor proteins such as  SH2...
T Cell Types and Functions01:24

T Cell Types and Functions

When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Autocrine Signaling01:01

Autocrine Signaling

Autocrine signaling is one of the many signaling mechanisms that function inside multicellular organisms to carry out intercellular communication. In this type of signaling mechanism, the same cell that secretes an extracellular signaling molecule also expresses the receptors to bind and respond to that signaling molecule.
Autocrine Signaling in Macrophages
Under normal physiological conditions, autocrine signaling is essential for maintaining homeostasis. This process is well characterized in...
Signal Transduction: Overview01:26

Signal Transduction: Overview

Cells respond to many types of information, often through receptor proteins positioned on the membrane. They respond to chemical signals, such as hormones, neurotransmitters, and other signaling molecules, initiating a series of molecular reactions to produce an appropriate response. This is called signal transduction. Cells also coordinate different responses elicited by the same signaling molecule via mediators, allowing molecular cross-talk.
Typically, signal transduction involves three...
Overview of Cell Signaling01:23

Overview of Cell Signaling

Despite the protective membrane that separates a cell from the environment, cells need the ability to detect and respond to environmental changes. Additionally, cells often need to communicate with one another. Unicellular and multicellular organisms use a variety of cell signaling mechanisms to communicate with the environment.
Cells respond to many types of information, often through receptor proteins positioned on the membrane. For example, skin cells respond to and transmit touch...

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Related Experiment Video

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Multiplex Cytokine Profiling of Stimulated Mouse Splenocytes Using a Cytometric Bead-based Immunoassay Platform
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Multiplex Cytokine Profiling of Stimulated Mouse Splenocytes Using a Cytometric Bead-based Immunoassay Platform

Published on: November 9, 2017

Interleukin-7 receptor signaling network: an integrated systems perspective.

Megan J Palmer1, Vinay S Mahajan, Lily C Trajman

  • 1Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.

Cellular & Molecular Immunology
|May 1, 2008
PubMed
Summary

Interleukin-7 (IL-7) signaling in lymphocytes is modulated by complex network mechanisms. Understanding these pathways is crucial for lymphocyte biology in health and disease.

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Area of Science:

  • Immunology
  • Molecular Biology
  • Cell Biology

Background:

  • Interleukin-7 (IL-7) is a critical cytokine for T and B lymphocyte development and homeostasis.
  • IL-7 receptor (IL-7R) activation regulates key lymphocyte functions like survival, proliferation, and differentiation.
  • Understanding IL-7R signaling modulation is vital for lymphocyte biology.

Purpose of the Study:

  • To review the network mechanisms that modulate Interleukin-7 receptor (IL-7R) signaling strength in T and B cells.
  • To explore how these mechanisms integrate to control IL-7R signaling properties in lymphocytes.
  • To provide a comprehensive approach to understanding IL-7R signaling in health and disease.

Main Methods:

  • Review of existing literature on IL-7 receptor signaling pathways.
  • Analysis of network control mechanisms including shared receptor components, signaling crosstalk, and feedback loops.
  • Examination of integrated gene regulation, multimerization, and ligand competition in IL-7R signaling.

Main Results:

  • IL-7R signaling strength is modulated through various interconnected network levels.
  • Mechanisms such as shared receptor components, signaling crosstalk, and feedback loops fine-tune IL-7R signal transduction.
  • Integrated gene regulation, multimerization, and ligand competition further contribute to the complexity of IL-7R signaling.

Conclusions:

  • Network-level analysis provides a comprehensive understanding of IL-7R signaling in lymphocytes.
  • These regulatory mechanisms are critical for governing lymphocyte properties in both health and disease states.
  • Systematic analysis of IL-7R signaling networks is essential for advancing lymphocyte biology research.