Target intelligence / Profile preview

Proteinase Activated Receptor 1 (PAR-1)

Target: PAR-1
Molecular classification: G protein-coupled receptor, Receptor

Overview

Proteinase Activated Receptor 1 (PAR-1) is a G protein-coupled receptor activated by proteolytic cleavage, primarily by thrombin. It plays a crucial role in hemostasis, thrombosis, vascular biology, inflammation, and cancer progression. Activation leads to downstream signaling pathways that influence platelet aggregation, vascular permeability, cytokine production, and tumor cell proliferation. Therapeutic strategies focus on inhibiting PAR-1 signaling to treat thrombosis and certain cancers.

Other names: Protease-activated receptor 1Thrombin receptorF2R

Mechanism of action

Inhibition of PAR-1 signaling

Biological functions

HemostasisThrombosisVascular tone regulationAngiogenesisInflammationCell proliferation

Disease associations

ThrombosisCancerInflammationCardiovascular disease

Safety considerations

Potential for bleeding (antithrombotic therapies)Off-target effects on other PARs

Biomarkers

VEGF levels (in cancer)

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