Related Experiment Video

Updated: Aug 8, 2026

Screening Bioactive Nanoparticles in Phagocytic Immune Cells for Inhibitors of Toll-like Receptor Signaling
09:51

Screening Bioactive Nanoparticles in Phagocytic Immune Cells for Inhibitors of Toll-like Receptor Signaling

Published on: July 26, 2017

New insights into the regulation of TLR signaling

Sinead M Miggin1, Luke A J O'Neill

  • 1School of Biochemistry and Immunology, Trinity College Dublin, Dublin, Ireland. miggins@tcd.ie

Journal of Leukocyte Biology
|May 16, 2006
PubMed

Insights

Toll-like receptor (TLR) activation involves complex biochemical regulation. Recent advances reveal intricate control mechanisms at multiple levels, including phosphorylation and targeted degradation of signaling molecules.

Area of Science:

  • Immunology
  • Molecular Biology
  • Cell Signaling

Background:

  • Toll-like receptors (TLRs) are crucial for innate immunity.
  • TLR activation depends on ligand, receptor localization, and signaling pathways.
  • Complex regulatory mechanisms govern TLR signal transduction.

Purpose of the Study:

  • To review recent advances in understanding TLR signaling regulation.
  • To highlight biochemical control mechanisms of TLR pathways.

Main Methods:

  • Literature review of recent studies on TLR signaling.
  • Analysis of regulatory mechanisms including phosphorylation, degradation, and sequestration.

Main Results:

  • TLR signaling is tightly regulated at multiple biochemical levels.
  • Phosphorylation, targeted degradation, and sequestration are key regulatory processes.
  • Understanding these mechanisms is vital for immune response modulation.

Conclusions:

  • Biochemical regulation plays a critical role in TLR signaling fidelity.
  • Advances in understanding these mechanisms offer therapeutic potential.
  • Further research into TLR regulation can inform immunomodulatory strategies.

More Related Videos

Detection of Neu1 Sialidase Activity in Regulating TOLL-like Receptor Activation09:04

Detection of Neu1 Sialidase Activity in Regulating TOLL-like Receptor Activation

Published on: September 7, 2010

Using RNA-interference to Investigate the Innate Immune Response in Mouse Macrophages12:47

Using RNA-interference to Investigate the Innate Immune Response in Mouse Macrophages

Published on: November 3, 2014

Related Concept Videos

NF-κB-dependent Signaling Pathway02:26

NF-κB-dependent Signaling Pathway

The transcription factor NF-κB was discovered in 1986 in the lab of Nobel laureate Professor David Baltimore, for its interaction with the immunoglobulin light chain enhancer in B-cells. After more than three decades of study, it is now evident that NF-κB regulates the expression of over 100 genes. Most of these genes play an essential role in the innate and adaptive immune responses as well as the inflammatory responses of animals.
NF-κB-dependent Signaling Mechanism
The heterodimer of NF-κB...
Regulation of the Unfolded Protein Response01:31

Regulation of the Unfolded Protein Response

Inositol-requiring kinase one or IRE1 is the most conserved eukaryotic unfolded protein response (UPR) receptor. It is a type I transmembrane protein kinase receptor with a distinctive site-specific RNase activity. As the binding mechanics of the misfolded proteins with the N-terminal domain of IRE-1 are unclear, three binding models — direct, indirect, and allosteric -- are proposed for receptor activation. Nevertheless, it is known that once a misfolded protein associates with IRE1, it...
Translational Regulation01:29

Translational Regulation

Translational regulation in prokaryotes ensures efficient protein synthesis by controlling ribosome access to mRNA. This regulation is mediated by secondary RNA structures, including translational riboswitches, RNA thermometers, and small RNAs (sRNAs), which respond to intracellular and environmental signals to modulate gene expression.Translational RiboswitchesRiboswitches in the leader region of mRNAs can regulate translation by altering the accessibility of the Shine-Dalgarno (SD) sequence,...
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...
Regulation of Bacterial Virulence01:28

Regulation of Bacterial Virulence

Pathogenic bacteria employ a range of regulatory mechanisms to modulate the expression of virulence genes in response to environmental and host-derived signals. These mechanisms ensure that virulence factors are expressed only under favorable conditions, thereby optimizing infection and survival strategies.Mechanisms of Virulence RegulationKey regulatory strategies include:Two-Component Systems: These consist of a membrane-bound sensor kinase and a cytoplasmic response regulator. Environmental...
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...