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Neurotrophic factor receptors
- Molecular classification
- Receptor, Receptor tyrosine kinase, Tumor necrosis factor receptor superfamily
01
Overview
"Neurotrophic factor receptors" refer collectively to cell-surface proteins that mediate the effects of neurotrophic factors, including the Trk family of receptor tyrosine kinases (TrkA/NTRK1, TrkB/NTRK2, TrkC/NTRK3) and the p75 neurotrophin receptor (p75NTR, NGFR), as well as receptors for other neurotrophic factors such as GDNF family ligands (RET, GFRα1-4). These receptors regulate key processes in neural development, survival, maintenance, differentiation, and plasticity, and are implicated in neurodegenerative diseases, psychiatric disorders, nerve injury, and some cancers. Due to the diversity of individual receptors in this group, precise functional, pathologic, and pharmacologic information depends on the specific receptor subtype involved.
- Other names
- Neurotrophin receptorsReceptors for neurotrophic factorsNGF/BDNF/NT receptors
02
Mechanism of action
Receptor agonism (mimicking neurotrophic factors); Receptor antagonism (inhibition of Trk signaling in cancer); Modulation of signal transduction pathways
03
Biological functions
Signal transductionCell survivalCell differentiationNeuronal plasticityCell death/apoptosis
04
Disease associations
Neurodegenerative diseaseCancerInflammationPsychiatric diseaseCardiovascular disease
05
Safety considerations
On-target toxicity related to neurotrophin function (e.g., pain, neuronal survival)CNS adverse effectsRisk of neuronal loss/apoptosis if signaling is blocked broadlyTumorigenicity when pathways are aberrantly activated, especially in Trk fusions
06
Biomarkers
Expression of TrkA, TrkB, TrkC, or p75NTR in tumor or neural tissue
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