Anne des Rieux, PhD, Université catholique de Louvain, Louvain, Belgium, discusses promising research within extracellular vesicles (EVs) for the treatment of central nervous system (CNS) diseases. Whilst EVs have been previously been investigated as diagnostic tools, current research suggests EVs can play a role in drug delivery. EVs, which contain various lipids, proteins and mRNA, can cross the blood-brain barrier, which is advantageous for the delivery of drugs to the brain. This interview took place at the 6th World Congress of the Tissue Engineering and Regenerative Medicine International Society (TERMIS 2021).