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Updated: Aug 13, 2026
04:50
Imaging FITC-dextran as a Reporter for Regulated Exocytosis
Published on: June 20, 2018
Compound exocytosis: mechanisms and functional significance
James A Pickett1, J Michael Edwardson
1Department of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge CB2 1PD, UK.
Traffic (Copenhagen, Denmark)
|January 20, 2006
Summary
Compound exocytosis involves sequential vesicle fusion with the plasma membrane and other vesicles. This specialized secretion mechanism, crucial for cell function, is explored in this review.
Area of Science:
- Cell Biology
- Biochemistry
- Physiology
Background:
- Compound exocytosis is a specialized secretion process involving vesicle fusion.
- It occurs in various cell types, with sequential fusion events being common.
- Intracellular vesicle fusion prior to plasma membrane interaction is also observed.
Purpose of the Study:
- To review the general and cell-specific features of compound exocytosis.
- To explore mechanisms regulating vesicle fusion order and potential biochemical differences.
- To discuss the role of cytoskeletal elements and the physiological significance of compound exocytosis.
Main Methods:
- Literature review of compound exocytosis mechanisms.
- Analysis of sequential versus intracellular vesicle fusion.
- Consideration of biochemical and cytoskeletal factors.
Main Results:
- Compound exocytosis exhibits diverse mechanisms across different cell types.
- Regulation of fusion order may involve plasma membrane interaction or intracellular events.
- Cytoskeletal elements likely play a role in stabilizing fused vesicles for secondary fusion.
Conclusions:
- Compound exocytosis is a complex process with varied regulatory mechanisms.
- Understanding these mechanisms is key to elucidating its physiological roles.
- Further research into biochemical and cytoskeletal roles is warranted.
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