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Resolving vesicle fusion from lysis to monitor calcium-triggered lysosomal exocytosis in astrocytes.
- Source :
-
Proceedings of the National Academy of Sciences of the United States of America . 8/28/2007, Vol. 104 Issue 35, p14151-14156. 6p. 4 Graphs. - Publication Year :
- 2007
-
Abstract
- Optical imaging of individual vesicle exocytosis is providing new insights into the mechanism and regulation of secretion by cells. To study calcium-triggered secretion from astrocytes, we used acridine orange (AO) to label vesicles. Although AO is often used for imaging exocytosis. we found that imaging vesicles labeled with AO can result in their photolysis. Here, we define experimental and analytical approaches that permit us to distinguish unambiguously between fusion, leakage, and lysis of individual vesicles. We have used this approach to demonstrate that lysosomes undergo calcium-triggered exocytosis in astrocytes. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CELLS
*ASTROCYTES
*PHYSIOLOGY
*GLANDS
*EXCRETION
*NEUROGLIA
Subjects
Details
- Language :
- English
- ISSN :
- 00278424
- Volume :
- 104
- Issue :
- 35
- Database :
- Academic Search Index
- Journal :
- Proceedings of the National Academy of Sciences of the United States of America
- Publication Type :
- Academic Journal
- Accession number :
- 26566463
- Full Text :
- https://doi.org/10.1073/pnas.0704935104