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Updated: Aug 26, 2026

Measuring G-protein-coupled Receptor Signaling via Radio-labeled GTP Binding
Published on: June 9, 2017
[Regulatory mechanisms of receptor-mediated signal transduction]
1Fyziologický ústav 1. lékarské fakulty Univerzity Karlovy, Praha.
Abstract:
The signal activation of the target structure, mediated via receptors, could be also the source of some regulatory events. An intensive signaling brings about desensitization, sequestration and down-regulation of receptors, while in the case of absenting signal the sensitization and the up-regulation occur. Such change in the function of one receptor system could influence the function of the other one (we talk about cross-regulation). This review is focused on mechanisms of the homologous regulation (changes in the pathway activated by the appropriate type of receptor) and possible mechanisms of cross-regulation (changes in pathway activated by other type of receptor).
Insights
Receptor regulation involves homologous and cross-regulation. Signaling changes receptor sensitivity and numbers, impacting cellular communication pathways.
Area of Science:
- Cellular signaling and receptor biology.
Context:
- Receptor function is dynamic, adapting to signal presence or absence.
- Receptor systems can influence each other through cross-regulation.
Purpose:
- To review mechanisms of homologous receptor regulation.
- To explore potential mechanisms of cross-regulation between receptor systems.
Summary:
- Intensive signaling leads to receptor desensitization and down-regulation.
- Signal absence results in receptor sensitization and up-regulation.
- Homologous regulation affects the pathway of the activated receptor, while cross-regulation impacts other pathways.
Impact:
- Understanding these regulatory mechanisms is crucial for comprehending cellular communication.
- This knowledge can inform therapeutic strategies targeting receptor-mediated signaling.
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