Comprehensive phenotyping of human platelets by single-cell cytometry.

Area of Science:

• Hematology
• Immunology
• Cell Biology

Background:

• Platelets are small, anucleate blood cells vital for hemostasis, immunity, and inflammation.
• Circulating platelets exhibit heterogeneity in size, age, receptor expression, and reactivity, influenced by megakaryocyte origin and bloodborne substances.
• Platelet responses to physiological and pathological signals are complex and depend on their surface receptor repertoire, potentially defining specialized subsets.

Purpose of the Study:

• To provide a comprehensive characterization of platelet subsets.
• To describe the necessary surface markers and gating strategies for detailed platelet immunophenotyping.

Main Methods:

• Utilizing single-cell resolution techniques like flow cytometry and mass cytometry.
• Applying established and novel gating strategies for precise platelet subset identification.

Main Results:

• Detailed identification of distinct platelet subsets based on surface marker expression.
• Established robust gating strategies for comprehensive platelet characterization.

Conclusions:

• Flow and mass cytometry enable remarkable detail in identifying platelet subsets.
• The described markers and strategies are essential for understanding platelet heterogeneity and function.