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Hollow-fibre affinity cell separation system for CD34+ cell enrichment
R E Nordon1, D N Haylock, L Gaudry
1Graduate School of Biomedical Engineering, University of New South Wales, Sydney, Australia.
Cytometry
|August 1, 1996
Summary
A novel hollow-fibre system effectively purifies CD34+ cells using immunoadsorption and fluid shear stress. This technology shows promise for scalable cell enrichment in clinical applications.
Area of Science:
- Biotechnology
- Cell Separation
- Immunoadsorption
Background:
- Purification of CD34+ cells is crucial for stem cell therapies.
- Existing cell separation methods face challenges in scalability and efficiency.
- CD34+ cells are key hematopoietic stem cell markers.
Purpose of the Study:
- To develop and evaluate a hollow-fibre immunoadsorption system for CD34+ cell purification.
- To assess the efficiency and purity of CD34+ cell enrichment using this novel technique.
Main Methods:
- Developed a hollow-fibre system with monoclonal antibody to CD34 antigen immobilized on the inner surface.
- Utilized uniform surface fluid shear stress for cell fractionation.
- Processed peripheral blood mononuclear cells from patients undergoing G-CSF and chemotherapy.
Main Results:
- Achieved high enrichment purity of CD34+ cells (94.4 +/- 3.1%).
- Recovered 61 +/- 9% of input CD34+ cells.
- Demonstrated significant depletion of CD34- cells (3.3 +/- 0.1% log10 depletion).
Conclusions:
- The hollow-fibre immunoadsorption system is effective for CD34+ cell purification.
- This technology offers potential for medium to large-scale cell enrichment.
- The method combines immunoselection with fluid shear stress for efficient cell separation.