Published: 15 August 2017
Antibiotic-induced release of small extracellular vesicles (exosomes) with surface-associated DNA
Unexpectedly, here we found that ciprofloxacin induced the release of both DNA (mitochondrial and chromosomal sequences) and DNA-binding proteins on the exofacial surfaces of small extracellular vesicles referred to in this paper as exosomes.
Furthermore, a label-free optical biosensor analysis revealed DNA-dependent binding of exosomes to fibronectin.
Our results reveal for the first time that prolonged low-dose ciprofloxacin exposure leads to the release of DNA associated with the external surface of exosomes.
Extracellular vesicles (EVs) can alter signaling of recipient cells by either cell surface receptor-ligand interactions or upon uptake by cells.
EVs have been shown to deliver specific mRNAs and various small RNAs as well as DNA to healthy cells. They modify the genetic composition of recipient cells and alter their functions
The presence of a clinically relevant dose of ciprofloxacin has been reported to cause oxidative damage, mitochondrial dysfunction and mtDNA depletion in mammalian cells.
We also demonstrate that this exofacial DNA facilitates Exosomes (EXOs) binding to the extracellular matrix protein fibronectin.
https://www.nature.com/articles/s41598-017-08392-1