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Target intelligence / Profile preview
Leukocyte tyrosine kinase receptor (LTK)
- Target
- LTK
- Molecular classification
- Enzyme, Receptor tyrosine kinase, Transmembrane receptor protein kinase, Protein kinase
01
Overview
Leukocyte tyrosine kinase receptor (LTK, formerly and rarely called TYK1) is a transmembrane receptor tyrosine kinase in the ALK/LTK family. It transduces extracellular signals into intracellular responses, regulating growth, neurite outgrowth, and survival, and participates in MAPK pathway activation. LTK is closely related to the insulin receptor family, is primarily expressed on the cell membrane, and is implicated in both normal development and various disease processes, including cancer. Its pharmacological targeting is under exploration, with fostamatinib identified as an inhibitor, though its definitive function and ligand remain only partially characterized[1][4][7][9].
- Other names
- TYK1LTKProtein tyrosine kinase 1Leukocyte receptor tyrosine kinase
02
Mechanism of action
Small-molecule inhibition of kinase activity, preventing downstream signaling
03
Biological functions
Signal transductionCell growthNeurite outgrowthCell survivalRegulation of apoptotic processRegulation of secretory pathway (ER to Golgi transport)
04
Disease associations
CancerNeurological disordersPotential roles in cardiac diseases and other growth/proliferation-related diseases (inferred from kinase family roles)
05
Safety considerations
As for other protein kinase inhibitors: off-target effects, immunosuppression, risk of secondary malignancy, potential for cardiac and hepatic toxicity (inferred from kinase class and known inhibitors)
06
Interacting drugs
Fostamatinib (reported as an unknown-action inhibitor)
07
Biomarkers
Status of LTK phosphorylation (experimental)Protein expression (research/oncology context)
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