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Autocrine Signaling

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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...
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Related Experiment Video

Updated: Jul 28, 2025

A Macrophage Reporter Cell Assay to Examine Toll-Like Receptor-Mediated NF-kB/AP-1 Signaling on Adsorbed Protein Layers on Polymeric Surfaces
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A Macrophage Reporter Cell Assay to Examine Toll-Like Receptor-Mediated NF-kB/AP-1 Signaling on Adsorbed Protein Layers on Polymeric Surfaces

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Signaling is the pathway to macrophage function.

Rachel A Gottschalk1

  • 1Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; Center for Systems Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.

Trends in Immunology
|May 31, 2023
PubMed
Summary
This summary is machine-generated.

Tissue environments and inflammation significantly influence macrophage behavior, impacting health and disease. Understanding how these contexts alter signaling pathways is key to deciphering macrophage decision-making.

Keywords:
computational modelingsignal integrationsignaling-to-transciptionsystems immunologytissue macrophage

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Area of Science:

  • Immunology
  • Cell Biology
  • Systems Biology

Background:

  • Macrophage function is critically influenced by tissue and inflammatory microenvironments.
  • The precise mechanisms by which these contexts modify signaling-to-transcription networks remain poorly understood.
  • This knowledge gap limits our ability to predict or control macrophage roles in health and disease.

Purpose of the Study:

  • To investigate how tissue and inflammatory contexts modulate macrophage signaling-to-transcription networks.
  • To explore the impact of cell state on macrophage decision-making processes.
  • To bridge the gap between environmental influences and cellular responses in macrophages.

Main Methods:

  • Utilizing a combination of mechanistic modeling and data-driven approaches.
  • Integrating computational and experimental techniques to analyze signaling pathways.
  • Focusing on the interplay between cellular context and transcriptional output.

Main Results:

  • Preliminary findings suggest distinct modifications of signaling networks by different tissue and inflammatory contexts (further details to be elaborated).
  • The study establishes a framework for analyzing context-dependent signaling in macrophages.
  • Identified key signaling nodes that are sensitive to environmental cues.

Conclusions:

  • Understanding context-specific signaling is essential for comprehending macrophage function in health and disease.
  • Mechanistic modeling and data integration offer powerful tools to dissect complex cellular decision-making.
  • Future research should leverage these integrated approaches to target macrophage behavior therapeutically.