UNIT 5.5 Measurement of Intracellular Ions by Flow Cytometry
Published Online: 1 DEC 2004
Copyright © 2004 by John Wiley and Sons, Inc.
Lab Protocol Title
Current Protocols in Immunology
How to Cite
June, C. H. and Moore, J. S. 2004. Measurement of Intracellular Ions by Flow Cytometry. Current Protocols in Immunology. 64:5.5:5.5.1–5.5.20.
- Published Online: 1 DEC 2004
- Published Print: NOV 2004
The recent development of a number of new fluorescent probes makes it possible to measure the concentrations of various intracellular free ions in single living cells. Among these ions are calcium, magnesium, sodium, potassium, and hydrogen (pH). This unit describes flow cytometric protocols using the dyes Indo-1 AM, Fluo-3, and Fura Red AM to measure intracellular calcium concentration. Support protocols detail the use of calcium buffers to calibrate a flow cytometric calcium assay, and methods to facilitate dye loading; an alternate protocol describes the use of a spectrofluorimeter to measure intracellular calcium for those investigators without access to a flow cytometer.