Protocol for autofluorescence-driven isolation of human peripheral blood eosinophils
Tobias Weihrauch1, Natalie Gray2, N Helge Meyer3
1Division of Experimental Allergy and Immunodermatology, School of Medicine and Health Sciences, Carl von Ossietzky University Oldenburg, Oldenburg, Germany.
This study introduces a new method for isolating both CD16-positive and CD16-negative eosinophils using autofluorescence. This protocol achieves over 99% purity, improving eosinophil research.
Area of Science:
- Immunology
- Cell Biology
Background:
- Current eosinophil isolation methods often exclude CD16-positive eosinophils.
- This exclusion limits comprehensive study of eosinophil heterogeneity and function.
Purpose of the Study:
- To present a novel protocol for the simultaneous isolation of human CD16+ and CD16- eosinophils.
- To enable detailed analysis of both eosinophil subsets.
Main Methods:
- Utilized MACSQuant Tyto cell sorter based on eosinophil autofluorescence.
- Developed purification, viability, and functional activity assessment steps.
- Included Giemsa staining and CD16 expression analysis.
Main Results:
- Achieved high-purity isolation of eosinophils (>99%).
- Successfully differentiated and isolated both CD16+ and CD16- eosinophil populations.
- Demonstrated assessment of purity, viability, and functionality.
Conclusions:
- The presented protocol provides a robust method for isolating distinct human eosinophil subsets.
- This technique enhances the study of eosinophil heterogeneity and immune responses.
- Facilitates deeper understanding of CD16+ and CD16- eosinophil roles.
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