Extracellular vesicles and energy metabolism

Area of Science:

• Biochemistry
• Cell Biology
• Extracellular Vesicle Research

Background:

• Glycolytic enzymes are frequently found in exosome and extracellular vesicle proteomics.
• Exosomes/extracellular vesicles reside in bodily fluids, suggesting potential roles in energy metabolism.

Purpose of the Study:

• To explore the hypothesis that exosomes/extracellular vesicles utilize glycolysis to power energy-consuming functions.
• To discuss the implications of impaired extracellular vesicle energy metabolism in disease, particularly cancer.

Main Methods:

• Review of existing literature on glycolytic enzymes in extracellular vesicles.
• Analysis of studies on prostasomes (prostate-derived exosomes) and their ATP production.
• Discussion of the link between extracellular ATP levels and cancer development.

Main Results:

• Prostasomes demonstrate ATP production via glycolysis, with rapid consumption by prostasomal ATPases.
• Glycolytic ATP production in prostasomes appears linked to self-sustaining energy demands.
• A failure in prostasomal ATPase activity may result in extracellular ATP leakage.

Conclusions:

• Exosomes/extracellular vesicles may function as energy-generating units through glycolysis in bodily fluids.
• Dysregulation of extracellular vesicle ATP metabolism, specifically ATPase activity, could influence cancer progression.
• Further research is warranted to elucidate the role of extracellular vesicle glycolysis in physiological and pathological processes.