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Published on: December 5, 2018
An Examination of the Putative Role of Melatonin in Exosome Biogenesis
Hassan Amini1, Aysa Rezabakhsh2, Morteza Heidarzadeh3
1Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran.
Abstract:
During the last two decades, melatonin has been found to have pleiotropic effects via different mechanisms on its target cells. Data are abundant for some aspects of the signaling pathways within cells while other casual mechanisms have not been adequately addressed. From an evolutionary perspective, eukaryotic cells are equipped with a set of interrelated endomembrane systems consisting of intracellular organelles and secretory vesicles. Of these, exosomes are touted as cargo-laden secretory vesicles that originate from the endosomal multivesicular machinery which participate in a mutual cross-talk at different cellular interfaces. It has been documented that cells transfer various biomolecules and genetic elements through exosomes to sites remote from the original cell in a paracrine manner. Findings related to the molecular mechanisms between melatonin and exosomal biogenesis and cargo sorting are the subject of the current review. The clarification of the interplay between melatonin and exosome biogenesis and cargo sorting at the molecular level will help to define a cell's secretion capacity. This review precisely addresses the role and potential significance of melatonin in determining the efflux capacity of cells via the exosomal pathway. Certain cells, for example, stem cells actively increase exosome efflux in response to melatonin treatment which accelerates tissue regeneration after transplantation into the injured sites.
Insights
Melatonin influences cellular communication by regulating exosome biogenesis and cargo sorting. This impacts cell secretion capacity and promotes tissue regeneration through enhanced exosome release.
Area of Science:
- Cell Biology
- Molecular Biology
- Endocrinology
Background:
- Melatonin exhibits pleiotropic effects through various cellular mechanisms.
- Exosomes, secreted vesicles, mediate intercellular communication by transferring biomolecules.
- The molecular interplay between melatonin and exosome biogenesis remains incompletely understood.
Purpose of the Study:
- To review the molecular mechanisms governing melatonin's influence on exosome biogenesis and cargo sorting.
- To elucidate melatonin's role in regulating cellular secretion capacity via the exosomal pathway.
- To highlight the potential of melatonin in modulating exosome release for therapeutic applications.
Main Methods:
- Literature review focusing on molecular signaling pathways.
- Analysis of studies investigating melatonin's effects on endosomal machinery.
- Synthesis of findings on exosome biogenesis and cargo sorting influenced by melatonin.
Main Results:
- Melatonin modulates exosome biogenesis and affects the sorting of cargo within exosomes.
- Specific cell types, like stem cells, increase exosome efflux upon melatonin treatment.
- This melatonin-induced exosome release is linked to accelerated tissue regeneration.
Conclusions:
- Melatonin plays a significant role in regulating cellular efflux capacity through the exosomal pathway.
- Understanding this interplay is crucial for defining cellular secretion mechanisms.
- Targeting melatonin-exosome interactions may offer novel strategies for regenerative medicine.
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