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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.
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Related Experiment Video

Updated: Jun 6, 2026

Identification of Mediators of T-cell Receptor Signaling via the Screening of Chemical Inhibitor Libraries
08:49

Identification of Mediators of T-cell Receptor Signaling via the Screening of Chemical Inhibitor Libraries

Published on: January 22, 2019

Receptor signaling in immune cell development and function.

Xiao-Ping Zhong1, Jinwook Shin, Balachandra K Gorentla

  • 1Department of Pediatrics, Duke University Medical Center, Durham, NC 27710, USA. zhong001@mc.duke.edu

Immunologic Research
|December 4, 2010
PubMed
Summary
This summary is machine-generated.

Proper immune responses depend on regulated cell surface receptor signaling. Our research identifies diacylglycerol kinases and TSC1/2-mTOR as key regulators in T cells, mast cells, dendritic cells, and macrophages.

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A TIRF Microscopy Technique for Real-time, Simultaneous Imaging of the TCR and its Associated Signaling Proteins
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Published on: March 22, 2012

Area of Science:

  • Immunology
  • Cell Signaling
  • Molecular Biology

Background:

  • Immune cell function relies on cell surface receptor signaling for pathogen response and self-tolerance.
  • Receptors like the T-cell receptor, IgE receptor, and Toll-like receptors are crucial for immune cell maturation, homeostasis, and activation.
  • Dysregulated signaling can impair immune responses and lead to autoimmunity.

Purpose of the Study:

  • To investigate the mechanisms of signal transduction and regulation by cell surface receptors in key immune cells.
  • To identify critical signaling molecules and regulators involved in immune cell function.
  • To enhance understanding of innate and adaptive immunity.

Main Methods:

  • Analysis of signaling pathways in T cells, mast cells, dendritic cells, and macrophages.
  • Investigating the roles of specific signaling molecules and regulators.
  • Utilizing molecular and cellular biology techniques to study receptor-mediated signaling.

Main Results:

  • Diacylglycerol kinases were identified as critical signaling molecules.
  • The TSC1/2-mTOR pathway was revealed as a key regulator in multiple immune cell types.
  • These findings highlight conserved regulatory mechanisms across different immune cells.

Conclusions:

  • Diacylglycerol kinases and the TSC1/2-mTOR pathway are essential for regulating immune cell function.
  • Understanding these pathways can lead to new therapeutic strategies for immune disorders.
  • This research provides insights into the fundamental processes governing immune cell responses.