Related Experiment Video
Updated: Feb 14, 2026

Author Spotlight: Developing Parmodulins to Target Protease-Activated Receptors for Inflammation Control
Published on: May 24, 2024
Protease-Activated Receptor 4 (PAR4): A Promising Target for Antiplatelet Therapy
Gamariel Rwibasira Rudinga1, Ghulam Jilany Khan2, Yi Kong3
1School of Life Science & Technology, China Pharmaceutical University, 24 Tong Jia Street, Nanjing 210009, China. 2720150013@stu.cpu.edu.cn.
Insights
Targeting protease-activated receptor 4 (PAR4) offers a safer strategy for preventing thrombosis and cardiovascular diseases (CVDs). PAR4 antagonists show potential for improved cardiac protection and managing inflammatory responses.
Area of Science:
- Molecular Biology
- Cardiovascular Medicine
- Pharmacology
Background:
- Cardiovascular diseases (CVDs) are a leading global cause of mortality.
- Platelet aggregation, a key factor in arterial thrombi, significantly contributes to CVDs.
- Protease-activated receptors (PARs), specifically PAR1 and PAR4 expressed on human platelets, are implicated in platelet activation and inflammatory signaling relevant to CVDs.
Purpose of the Study:
- To review the structural characteristics and activation mechanisms of PAR4.
- To elucidate the role of PAR4 in the pathophysiology of cardiovascular diseases.
- To explore the potential of PAR4 targeting as a strategy for improved cardiac protection and thrombosis prevention.
Main Methods:
- Literature review summarizing existing research on PAR4.
- Analysis of PAR4's structural features and activation pathways.
- Evaluation of PAR4's involvement in platelet function and inflammatory processes.
Main Results:
- PAR4 plays a critical role in platelet activation and modulates inflammatory responses.
- Current antiplatelet drugs have limitations due to side effects.
- Targeting PAR4 presents a potentially safer therapeutic strategy for thrombosis prevention.
Conclusions:
- PAR4 antagonists are highlighted for their potential utility in managing various cardiovascular diseases.
- PAR4 targeting represents a promising avenue for enhancing cardiac safety and reducing thrombotic events.
- Further research into PAR4 antagonists could lead to improved treatments for CVDs.
Abstract:
Cardiovascular diseases (CVDs) are currently among the leading causes of death worldwide. Platelet aggregation is a key cellular component of arterial thrombi and major cause of CVDs. Protease-activated receptors (PARs), including PAR1, PAR2, PAR3 and PAR4, fall within a subfamily of seven-transmembrane G-protein-coupled receptors (GPCR). Human platelets express PAR1 and PAR4, which contribute to the signaling transduction processes. In association with CVDs, PAR4 not only contributes to platelet activation but also is a modulator of cellular responses that serve as hallmarks of inflammation. Although several antiplatelet drugs are available on the market, they have many side effects that limit their use. Emerging evidence shows that PAR4 targeting is a safer strategy for preventing thrombosis and consequently may improve the overall cardiac safety profile. Our present review summarizes the PAR4 structural characteristics, activation mechanism, role in the pathophysiology of diseases and understanding the association of PAR4 targeting for improved cardiac protection. Conclusively, this review highlights the importance of PAR4 antagonists and its potential utility in different CVDs.
Related Concept Videos
Targeted Cancer Therapies
There are several types of targeted therapies against...
Internal Receptors
Enzyme-linked Receptors
Neurotrophin (NT) receptors are a family of RTKs, including trkA, trkB, and trkC (tropomyosin-related kinase) receptors. TrkA is specific for nerve growth factor (NGF), neurotrophin-6, and neurotrophin-7. TrkB binds...
Receptor-mediated Endocytosis
Gene Therapy
G-protein Coupled Receptors

