Related Experiment Video
Updated: Aug 10, 2026
09:04
Detection of Neu1 Sialidase Activity in Regulating TOLL-like Receptor Activation
Published on: September 7, 2010
Toll Like Receptors Signaling Pathways as a Target for Therapeutic Interventions
Agnieszka Jezierska1, Irina A Kolosova2, Alexander D Verin3
1Vascular Biology Center, Medical College of Georgia, USA.
Current Signal Transduction Therapy
|April 5, 2017
Summary
Toll-Like Receptors (TLRs) initiate immune responses. Inhibiting TLRs early in cellular pathways offers promising treatments for diseases like cancer, asthma, and sepsis.
Area of Science:
- Immunology
- Molecular Biology
- Pharmacology
Background:
- Toll-Like Receptors (TLRs) are crucial for initiating immune responses.
- TLRs are activated by pathogens, cytokines, and other molecules, triggering innate immunity.
- Current treatments often target later stages of immune pathways.
Purpose of the Study:
- To review the critical role of TLRs in immune system activation.
- To explore the therapeutic potential of targeting TLRs and related proteins.
- To highlight the advantage of early intervention in immune pathway inhibition.
Main Methods:
- Literature review of published data on TLR function and therapeutic targeting.
- Analysis of the mechanisms of TLR activation and downstream signaling.
- Comparison of early vs. late pathway inhibition strategies.
Main Results:
- TLRs play a pivotal role in the early activation of the immune system.
- Inhibitors targeting TLRs and related proteins show potential for treating various diseases.
- Early inhibition of TLRs may be more beneficial than targeting later pathway components.
Conclusions:
- Targeting TLRs offers a promising therapeutic strategy for immune-related diseases.
- Early intervention in immune pathways via TLR inhibition holds significant clinical potential.
- Further research into TLR-specific inhibitors is warranted for conditions including cancer, asthma, sepsis, Crohn's disease, and thrombosis.
Related Concept Videos
01:19Interactions 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...
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...
01:15Amplifying Signals via Second Messengers
Many receptor binding ligands are hydrophilic; they do not cross the cell membrane but bind to cell-surface receptors. Thus, their message must be relayed by second messengers present in the cell cytoplasm. There are several second messenger pathways, each with its own way of relaying information. For example, the G protein-coupled receptors can activate both phosphoinositol and cyclic AMP (cAMP) second messenger pathways. The phosphoinositol pathway is active when the receptor induces...
01:22Amplifying Signals via Enzymatic Cascade
When a ligand binds to a cell-surface receptor, the receptor's intracellular domain changes shape, which may either activate its enzyme function or allow its binding to other molecules. The initial signal is amplified by most signal transduction pathways. This means that a single ligand molecule can activate multiple molecules of a downstream target. Proteins that relay a signal are most commonly phosphorylated at one or more sites, activating or inactivating the protein. Kinases catalyze the...
01:15G Protein-coupled Receptors
G Protein-Coupled Receptors or GPCRs are membrane-bound receptors that transiently associate with heterotrimeric G proteins and induce an appropriate response to sensory stimuli such as light, odors, hormones, cytokines, or neurotransmitters.
GPCRs are also called heptahelical, 7TM, or serpentine receptors, and consist of seven (H1-H7) transmembrane alpha-helices that span the bilayer to form a cylindrical core. The transmembrane helices are connected by three extracellular loops and three...
GPCRs are also called heptahelical, 7TM, or serpentine receptors, and consist of seven (H1-H7) transmembrane alpha-helices that span the bilayer to form a cylindrical core. The transmembrane helices are connected by three extracellular loops and three...
01:26Signal 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...
Typically, signal transduction involves three...
01:27Transducer Mechanism: Enzyme-Linked Receptors
Enzyme-linked receptors are cell-surface receptors acting as an enzyme or associating with an enzyme intracellularly. They make excellent drug targets. Drugs can bind to the extracellular ligand-binding domain or directly affect their enzymatic domain and alter their activity.
Major types that are helpful drug targets include:
Major types that are helpful drug targets include: