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Published on: August 22, 2019
A two-step non-flowcytometry-based naïve B cell isolation method and its application in Staphylococcal enterotoxin B
Kaj Chokeshai-u-saha1, Supranee Buranapraditkun, Alain Jacquet
1Division of Allergy and Clinical immunology, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
Asian Pacific Journal of Allergy and Immunology
|November 20, 2012
Summary
A new two-step method enhances the isolation of pure human naïve B cells for studying their role in T cell activation. This technique improves purity and works with small blood volumes, aiding antigen presentation research.
Area of Science:
- Immunology
- Cell Biology
Background:
- Studying human naïve B cells is crucial for understanding antigen presentation and T cell stimulation.
- A reliable method for isolating sufficient naïve B cells is needed for research.
Purpose of the Study:
- To develop an improved method for isolating pure human naïve B cells.
- To assess the capacity of isolated naïve B cells in antigen presentation to naïve CD4+ T cells.
Main Methods:
- A two-step isolation protocol combining rosetting and magnetic bead sorting was employed.
- Naïve B cells were analyzed for phenotype and their ability to present Staphylococcal enterotoxin B (SEB) to naïve CD4+ T cells.
Main Results:
- The two-step method yielded a higher purity of naïve B cells (97%) compared to the one-step method (90%).
- The isolation procedure is effective with small blood volumes (as low as 10 ml).
- Isolated naïve B cells demonstrated the ability to present SEB and activate naïve CD4+ T cells.
Conclusions:
- The developed two-step method offers superior purity of naïve B cells without flow cytometry.
- This technique is efficient with limited blood samples and suitable for in vitro studies.
- Isolated human naïve B cells effectively function as antigen-presenting cells, activating CD4+ T cells via SEB presentation.
