Related Experiment Video
Updated: Aug 9, 2026

Mimicking the Function of Signaling Proteins: Toward Artificial Signal Transduction Therapy
Published on: September 29, 2016
Negative signaling in health and disease
1Department of Microbiology and the Comprehensive Cancer Center, Ohio State University, Columbus 43210, USA. coggeshall.1@osu.edu
Abstract:
Signal transduction induced by receptors can elicit intracellular biochemical events that either support or inhibit cell activation. Induction of the latter has been termed "negative signaling" and can be triggered by receptors on immune cells that are distinct from activating receptors while other growth-promoting receptors induce both positive and negative signaling events. Here, the biochemistry leading to cell activation or inhibition and induced by receptors on immune cells are reviewed. Furthermore, recent experimental evidence is reviewed that indicates an important contribution of negative signaling to the intracellular survival of infectious pathogens.
Insights
Receptors on immune cells can trigger "negative signaling," inhibiting cell activation. This process is crucial for the survival of intracellular pathogens, impacting immune responses.
Area of Science:
- Immunology
- Cell Biology
- Biochemistry
Background:
- Receptor signaling in immune cells can lead to either cell activation or inhibition.
- Distinct receptors can trigger positive or negative signaling pathways.
- Negative signaling, a form of receptor-induced inhibition, plays a role in cellular responses.
Purpose of the Study:
- To review the biochemistry of receptor-induced cell activation and inhibition.
- To explore the role of negative signaling in immune cell function.
- To examine the contribution of negative signaling to pathogen survival.
Main Methods:
- Literature review of signal transduction pathways.
- Analysis of experimental evidence on receptor-mediated cellular events.
- Synthesis of current research on negative signaling and infectious diseases.
Main Results:
- Receptors can induce intracellular biochemical events that either promote or suppress cell activation.
- Negative signaling is triggered by specific receptors on immune cells.
- Evidence suggests negative signaling contributes to the intracellular survival of infectious pathogens.
Conclusions:
- Negative signaling is a critical mechanism modulating immune cell responses.
- Understanding negative signaling is key to developing strategies against intracellular pathogens.
- Receptor-induced signaling pathways offer therapeutic targets for infectious diseases.
Related Concept Videos
Notch Signaling Pathway
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not until 1985...
Interactions Between Signaling Pathways
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...
Amplifying Signals via Enzymatic Cascade
Cell Signaling Feedback Loops
Negative feedback loops
Most signaling systems have negative feedback loops that can perform different functions such as output limiter, and adaptation.
Output limiter
Upon receiving an input signal, the cellular response rapidly increases until a threshold is reached. Beyond this threshold, a negative feedback loop...
Notch Signaling Pathway
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not until 1985...
Signal Transduction: Overview
Typically, signal transduction involves three...

