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Visualizing Calcium Signaling in Cells by Digitized Wide-Field and Confocal Fluorescent Microscopy
Abstract
Calcium (Ca2+) is a fundamentally important component of cellular signal transduction. Dynamic changes in the concentration of Ca2+ ([Ca2+]) in the cytoplasm and within organelles are tightly controlled and regulate a diverse array of biological activities, including fertilization, cell division, gene expression, cellular metabolism, protein biosynthesis, secretion, muscle contraction, intercellular communication, and cell death. Measurement of intracellular [Ca2+] is essential to understanding the role of Ca2+ and for defining the underlying regulatory mechanisms in any cellular process. A broad range of synthetic and biosynthetic fluorescent Ca2+ sensors are available that enable the visualization and quantification of subcellular spatio-temporal [Ca2+] gradients. This chapter describes the application of wide-field digitized video fluorescence microfluorometry and confocal microscopy to quantitatively image Ca2+ in cells with high temporal and spatial resolution.
Affiliation(s): (2) Department of Medicine, University of Chicago, Chicago, IL
(3) Department of Anatomy and Neurobiology, University of Vermont, Burlington, VT
(4) Department of Neurobiology, Pharmacology, and Physiology, University of Chicago, Chicago, IL
Series: Methods in Molecular Biology  |  Volume: 319  |  Pub. Date: Nov-01-2005  |  Page Range: 37-66  |  DOI: 10.1007/978-1-59259-993-6_3
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