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Amperometric post s...
Amperometric post spike feet reveal most exocytosis is via extended kiss-and-run fusion
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- Mellander, Lisa J. (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,University of Gothenburg
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- Trouillon, Raphaël, 1982 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,University of Gothenburg
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- Svensson, Maria I. (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,University of Gothenburg
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- Ewing, Andrew G, 1957 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2012-11-30
- 2012
- English.
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In: Scientific Reports. - : Springer Science and Business Media LLC. - 2045-2322. ; 2:artikel nr 907, s. 1-6
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Abstract
Subject headings
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- The basis for communication between nerve cells lies in the process of exocytosis, the fusion of neurotransmitter filled vesicles with the cell membrane resulting in release of the signaling molecules. Even though much is known about this process, the extent that the vesicles are emptied upon fusion is a topic that is being debated. We have analyzed amperometric peaks corresponding to release at PC12 cells and find stable plateau currents during the decay of peaks, indicating closing of the vesicle after incomplete release of its content. Using lipid incubations to alter the amount of transmitter released we were able to estimate the initial vesicular content, and from that, the fraction of release. We propose a process for most exocytosis events where the vesicle partially opens to release transmitter and then closes directly again, leaving the possibility for regulation of transmission within events.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Keyword
- chromaffin cells
- vesicle fusion
- release
- pore
- events
- model
- pore
Publication and Content Type
- ref (subject category)
- art (subject category)
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