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Proceedings Paper

Laser Scanning Microscopy To Study Molecular Transport In Single Cells
Author(s): Manfred Scholz; Heinrich Sauer; Hans-Peter Rihs; Reiner Peters
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Paper Abstract

Laser scanning microscopy was used to study dynamic processes in single cells. The laser scanning microscope of Heidelberg Instruments was complemented with a 1W krypton laser and a microinjection set-up. Simple algorithms were worked out which permit determination of local and integrated intensities in fluorescence scans. In one application the lateral diffusion of macromolecules was studied. The krypton laser was used to irreversibly photolyse fluorescently labeled dextrans in small volumes of a thin fluid layer; equilibration of the local fluorescence inhomogeneity by lateral diffusion was followed by repetitive scanning. In a second application the permeability of single red blood cell membranes which had been exposed to the complement cascade was studied. In a further application artificial nuclear proteins, constructed by molecular genetic methods, were injected into the cytoplasm of hepatoma cells. The kinetics of protein transport from cytoplasm to nucleus were derived from fluorescence scans. In all applications a good agreement between results obtained by laser scanning microscopy and those obtained independently by other methods and instruments was observed.

Paper Details

Date Published: 9 February 1989
PDF: 7 pages
Proc. SPIE 1028, Scanning Imaging, (9 February 1989); doi: 10.1117/12.950335
Show Author Affiliations
Manfred Scholz, Max-Planck-Institut fur Biophysik (Germany)
Heinrich Sauer, Max-Planck-Institut fur Biophysik (Germany)
Hans-Peter Rihs, Max-Planck-Institut fur Biophysik (Germany)
Reiner Peters, Max-Planck-Institut fur Biophvsik (Germany)

Published in SPIE Proceedings Vol. 1028:
Scanning Imaging
Tony Wilson, Editor(s)

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