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Updated: Jul 31, 2026
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Platelet Adhesion and Aggregation Under Flow using Microfluidic Flow Cells
Published on: October 27, 2009
The P2Y1 receptor is essential for ADP-induced shape change and aggregation in mouse platelets
Y B Kim1, J Jin, C Dangelmaier
1Department of Physiology, Temple University School of Medicine, 3420 North Broad Street, Philadelphia, PA 19140, USA. kunapuli@sgil.fels.temple.edu
Platelets
|June 28, 2006
Summary
This study confirms that mouse platelets possess two adenosine diphosphate (ADP) receptors, P2Y1 and P2T(AC), crucial for platelet shape change and aggregation, mirroring human platelet functions.
Area of Science:
- Hematology
- Platelet Biology
- Pharmacology
Background:
- Adenosine diphosphate (ADP) is a key agonist in platelet activation, essential for hemostasis.
- The P2Y1 receptor's role in human platelet shape change and aggregation is established.
- Investigating P2Y1 receptor function in mouse platelets is critical before generating knockout models.
Purpose of the Study:
- To confirm the essential role of the P2Y1 receptor in ADP-induced platelet responses in mice.
- To characterize the function of ADP receptors in mouse platelets.
- To validate mouse models for studying platelet aggregation and hemostasis.
Main Methods:
- Immunofluorescence using P2Y1-specific antiserum to detect receptor presence.
- Pharmacological assessment using P2Y1-selective antagonist (A2P5P) and P2T(AC) antagonist (ARL 66096).
- Evaluation of ADP-induced platelet shape change, aggregation, calcium mobilization, and adenylyl cyclase inhibition.
Main Results:
- P2Y1 receptor was detected on mouse platelets via immunofluorescence.
- ARL 66096 inhibited ADP-induced aggregation and adenylyl cyclase inhibition but not shape change or calcium mobilization.
- A2P5P inhibited ADP-induced aggregation, shape change, and calcium mobilization, but not adenylyl cyclase inhibition.
Conclusions:
- Mouse platelets express functional P2Y1 and P2T(AC) receptors, analogous to human platelets.
- These findings support the use of mouse models for studying ADP-mediated platelet functions.
- Two distinct ADP receptors mediate critical platelet responses in mice.
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