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Updated: May 26, 2025
07:06
Preparation of Washed Human Platelets for Quantitative Metabolic Flux Studies
Published on: January 10, 2025
342
Enhanced STIM1 expression drives platelet hyperactivity in diabetes.
Haoxuan Zhong1, Maieryemu Waresi2, Xu Jia3
1Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, China.
Biochemical and Biophysical Research Communications
|February 22, 2025
Summary
Elevated Stromal Interaction Molecule 1 (STIM1) in diabetic platelets enhances aggregation and reactivity. Targeting STIM1 shows promise for preventing thrombosis in type 2 diabetes mellitus (T2DM) patients.
Area of Science:
- Biochemistry
- Hematology
- Endocrinology
Background:
- Stromal interaction molecule 1 (STIM1) regulates calcium signaling and platelet function.
- Elevated STIM1 is noted in diabetic platelets, but its role in hyperreactivity is unclear.
Purpose of the Study:
- To investigate the correlation between STIM1 expression and platelet hyperreactivity in type 2 diabetes mellitus (T2DM).
- To evaluate the therapeutic potential of targeting STIM1 for antithrombotic strategies in T2DM.
Main Methods:
- Assessed STIM1 expression and platelet aggregation in T2DM patients and db/db mice.
- Measured platelet aggregation, P-selectin release, integrin activation, spreading, and clot retraction.
- Evaluated the efficacy of store-operated calcium entry channel inhibitor CM4620 versus aspirin.
Main Results:
- A positive correlation was found between STIM1 expression and platelet aggregation in T2DM patients.
- High STIM1 expression correlated with enhanced platelet aggregation, P-selectin release, integrin activation, spreading, and clot retraction.
- CM4620 showed superior antiplatelet and antithrombotic effects compared to aspirin in diabetic models and patients.
Conclusions:
- Elevated STIM1 expression contributes to platelet hyperreactivity in diabetes.
- Targeting STIM1 represents a potential novel therapeutic approach for thrombosis prevention in T2DM.
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