This work was supported by the Bundesministerium für Forschung und Technologie.
High gradient magnetic cell separation with MACS†
Article first published online: 8 MAR 2005
Copyright © 1990 Wiley-Liss, Inc.
Volume 11, Issue 2, pages 231–238, 1990
How to Cite
Miltenyi, S., Müller, W., Weichel, W. and Radbruch, A. (1990), High gradient magnetic cell separation with MACS. Cytometry, 11: 231–238. doi: 10.1002/cyto.990110203
- Issue published online: 21 JUN 2005
- Article first published online: 8 MAR 2005
- Manuscript Accepted: 24 JUL 1989
- Manuscript Received: 6 APR 1989
- Superparamagnetic microbeads;
- magneto-immunofluorescent labelling;
- rare-cell isolation
A flexible, fast and simple magnetic cell sorting system for separation of large numbers of cells according to specific cell surface markers was developed and tested. Cells stained sequentially with biotinylated antibodies, fluorochrome-conjugated avidin, and superparamagnetic biotinylated-microparticles (about 100 nm diameter) are separated on high gradient magnetic (HGM) columns. Unlabelled cells pass through the column, while labelled cells are retained. The retained cells can be easily eluted. More than 109 cells can be processed in about 15 min. Enrichment rates of more than 100-fold and depletion rates of several 1,000-fold can be achieved. The simultaneous tagging of cells with fluorochromes and very small, invisible magnetic beads makes this system an ideal complement to flow cytometry. Light scatter and fluorescent parameters of the cells are not changed by the bound particles. Magnetically separated cells can be analysed by fluorescence microscopy or flow cytometry or sorted by fluorescence-activated cell sorting without further treatment. Magnetic tagging and separation does not affect cell viability and proliferation.