Ectopic ATP synthase stimulates the secretion of extracellular vesicles in cancer cells.

ABSTRACT:

Abstarct

Ectopic ATP synthase on the plasma membrane (eATP synthase) has been found in various cancer types and is a potential target for cancer therapy. However, whether it provides a functional role in tumor progression remains unclear. Here, quantitative proteomics reveals that cancer cells under starvation stress express higher eATP synthase and enhance the production of extracellular vesicles (EVs), which are vital regulators within the tumor microenvironment. Further results show that eATP synthase generates extracellular ATP to stimulate EV secretion by enhancing P2X₇ receptor-triggered Ca²⁺ influx. Surprisingly, eATP synthase is also located on the surface of tumor-secreted EVs. The EVs-surface eATP synthase increases the uptake of tumor-secreted EVs i

SUBMITTER: Kao YC 

PROVIDER: S-EPMC10272197 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature