Exosomes are small nano-sized vesicles that are produced by cells in the body.
Exosomes contain a variety of molecules including proteins. RNA (ribonucleic acid), lipids (fats) and other bioactive substances. The contents of exosomes very depending on the type of cell they were derived from.
Once exosomes are secreted or pushed outside a cell they play a crucial role in cell-to-cell communication with the ability to transfer information and change the behaviour of neighbouring cells.
This intercellular communication can influence:
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Cell regeneration
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Tissue repair
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Immune regulation
It is important to note that exosomes are not cells themselves; they are small vesicles release by cells and are incapable of reproduction or transformation. They are cell-free, DNA-free and their main function is to influence other cells giving them a favourable safety profile.