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Isolation and Characterization of Neutrophils with Anti-Tumor Properties
Published on: June 19, 2015
Technical advance: immunophenotypical characterization of human neutrophil differentiation
Helena Mora-Jensen1, Johan Jendholm, Anna Fossum
1Department of Hematology, University of Copenhagen, 2200 Copenhagen-N, Denmark.
Journal of Leukocyte Biology
|June 10, 2011
Summary
This study presents a new flow cytometry method to isolate human neutrophil development stages. This protocol offers high purity and detailed gene expression for studying neutrophil differentiation in vivo.
Area of Science:
- Hematology
- Immunology
- Cell Biology
Background:
- Neutrophil differentiation is a complex process crucial for immune response.
- Existing models for studying neutrophil differentiation often rely on in vitro systems.
- A need exists for precise methods to isolate distinct stages of human neutrophil development.
Purpose of the Study:
- To develop and validate a flow cytometry-based protocol for prospective purification of human bone marrow (BM) populations.
- To isolate six successive stages of terminal neutrophil differentiation.
- To enable high-resolution analysis of neutrophil differentiation markers.
Main Methods:
- Utilized flow cytometry for cell sorting.
- Targeted prospective purification of human bone marrow (BM) cells.
- Defined six distinct neutrophil differentiation stages: early promyelocytes, late promyelocytes, myelocytes, metamyelocytes, band cells, and PMN neutrophilic granulocytes.
Main Results:
- Achieved high purity for each isolated bone marrow (BM) population.
- Demonstrated biologically meaningful expression profiles for key neutrophil differentiation marker genes.
- Obtained unprecedented resolution of gene expression changes during neutrophil maturation.
Conclusions:
- The developed protocol enables precise isolation of human neutrophil differentiation stages.
- This method provides a valuable tool for in vivo studies of human neutrophil differentiation.
- Offers a superior alternative to current in vitro differentiation models using myeloid cell lines and hematopoietic stem and progenitor cells (HPCs).
