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Updated: May 6, 2026

Comprehensive Analysis of Procoagulant Platelets Exhibiting Features of Necrosis, Apoptosis and Platelet Activation
Published on: May 23, 2025
[Protein kinase C activation induces platelet apoptosis]
Li-Li Zhao1, Meng-Xing Chen, Ming-Yi Zhang
1Laboratory of Hematology and Cell Biology, School of Biological Science and Medical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China; Jiangsu Institute of Hematology, Key Laboratory of Thrombosis and Hemostasis, Ministry of Health, The First Affiliated Hospital of Soochow University, Suzhou 215006, Jiangsu Province, China.
Protein kinase C (PKC) activation triggers platelet apoptosis by affecting mitochondrial function and activating caspase-3. This finding reveals a new mechanism regulating platelet count and function.
Area of Science:
- Hematology
- Cell Biology
- Biochemistry
Context:
- Platelet apoptosis, induced by various stimuli, is crucial for regulating platelet numbers and function.
- The precise regulatory mechanisms of platelet apoptosis remain largely unknown.
- Protein kinase C (PKC) is abundant in platelets and influences their functions, but its role in platelet apoptosis is unclear.
Purpose:
- This study aimed to investigate the role of Protein kinase C (PKC) in regulating platelet apoptosis.
Summary:
- PKC activation was found to induce mitochondrial membrane potential (ΔΨm) depolarization and caspase-3 activation in platelets in a time- and concentration-dependent manner.
- PKC inhibition did not lead to ΔΨm depolarization or phosphatidylserine (PS) exposure.
- Results indicate that PKC activation initiates platelet apoptosis via mitochondrial dysfunction and caspase-3 activation.
Impact:
- This research uncovers a novel mechanism by which PKC regulates platelet apoptosis.
- These findings have significant pathophysiological implications for thrombosis and hemostasis, impacting platelet count and function regulation.
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