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Comparison of the sorting efficiency and influence on cell function between the sterile flow cytometry and
Qiao Li1, Xiaoqiang Zhang, Yong Peng
1Department of Cardiology, West China Hospital, Sichuan University, Chengdu, China.
Preparative Biochemistry & Biotechnology
|January 11, 2013
Summary
Comparing cell sorting methods, sterile flow cytometry yielded higher purity of CXCR4-positive mesenchymal stem cells (CXCR4(+)-MSCs). However, immunomagnetic beads better preserved cell viability and chemotactic function.
Area of Science:
- Cell Biology
- Biotechnology
- Stem Cell Research
Background:
- Flow cytometry and immunomagnetic bead purification are standard cell sorting techniques.
- Direct comparisons of their efficiency and impact on cell function are limited.
Purpose of the Study:
- To compare the sorting efficiency and functional outcomes of sterile flow cytometry versus immunomagnetic bead purification for CXCR4-positive bone marrow mesenchymal stem cells (CXCR4(+)-MSCs).
Main Methods:
- In vitro cultured rat bone marrow mesenchymal stem cells were sorted using sterile flow cytometry and immunomagnetic beads.
- Purity, viability (MTT assay), and chemotactic capacity (SDF-1α induction) of sorted CXCR4(+)-MSCs were evaluated.
Main Results:
- Sterile flow cytometry achieved higher purity of CXCR4(+)-MSCs.
- Immunomagnetic bead purification resulted in significantly higher cell viability and proliferation rates (p < 0.01).
- Cells sorted by immunomagnetic beads exhibited enhanced chemotactic migration towards SDF-1α compared to flow cytometry-sorted cells (26.40 ± 1.67 vs. 15.60 ± 1.14, p < 0.01).
Conclusions:
- While sterile flow cytometry offers superior purity for CXCR4(+)-MSCs, immunomagnetic bead purification demonstrates a less detrimental impact on cell viability and functional chemotaxis.
- Immunomagnetic bead purification may be preferable when preserving cell activity is critical.
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