Related Experiment Video
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05:49
Procoagulant Platelet Characterization by Measuring Phosphatidylserine Exposure and Microvesicle Release from Human Purified Platelets
Published on: November 29, 2024
611
Platelet-derived microvesicles induce intracellular calcium mobilization in human platelets
Pooja Yadav1, Abhishek R Panigrahi1, Samir K Beura1
1Department of Zoology, School of Biological Sciences, Central University of Punjab, Bathinda, India.
Cell Biology International
|August 31, 2023
Summary
Platelet-derived microvesicles (PMVs) elevate platelet calcium levels through intracellular and extracellular pathways. This research clarifies PMV impact on calcium signaling in human platelets.
Area of Science:
- Biochemistry
- Cell Biology
- Hematology
Background:
- Platelet-derived microvesicles (PMVs) are abundant in circulation and implicated in various diseases.
- PMVs contain cargo that can modulate target cell functions, particularly calcium signaling.
- Calcium ions are crucial for cellular processes, including hemostasis and thrombosis.
Purpose of the Study:
- To investigate the effect of PMVs on calcium mobilization in human platelets.
- To elucidate the mechanisms underlying PMV-induced calcium changes in platelets.
Main Methods:
- Quantification of intracellular calcium levels in platelets upon PMV exposure.
- Assessment of calcium release from intracellular stores (dense tubular system, mitochondria).
- Evaluation of extracellular calcium influx, including store-operated calcium entry (SOCE).
Main Results:
- PMVs significantly increase platelet intracellular calcium in a dose-dependent manner.
- PMV-mediated calcium release involves intracellular stores and extracellular calcium influx via SOCE.
- The sarcoendoplasmic reticulum calcium ATPase (SERCA) is not involved in PMV-induced calcium elevation.
Conclusions:
- PMVs play a critical role in modulating platelet calcium homeostasis.
- Understanding PMV-calcium interactions offers insights into platelet activation and thrombosis.
- These findings contribute to comprehending cell behavior in PMV-rich conditions.
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