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Eur J Pharm Biopharm ; 199: 114298, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38642716

ABSTRACT

Delivering drugs to the brain is a complex challenge in medical research, particularly for disorders like Alzheimer's and Parkinson's. The blood-brain barrier restricts the entry of many therapeutic molecules, hindering their effectiveness. Nanoparticles, a potential solution, face issues like toxicity and limited approvals. A new avenue explores the use of small extracellular vesicles (sEVs), i.e., exosomes, as natural carriers for drug delivery. sEVs, tiny structures below 150 nm, show promise due to their minimal immune response and ability to precisely deliver drugs. This review focuses on the potential of sEVs-based drug delivery systems for treating neurological disorders, brain cancers, and other brain-related issues. Notably, bioengineered sEVs-carrying therapeutic compounds exhibit promise in early studies. The unique features of sEVs, such as their small size and natural properties, position them as candidates to overcome challenges in drug delivery to the brain. Ongoing clinical trials and research into sEVs behavior within the body further highlight their potential for revolutionizing drug delivery and addressing complex brain conditions.


Subject(s)
Blood-Brain Barrier , Brain Diseases , Drug Delivery Systems , Exosomes , Humans , Blood-Brain Barrier/metabolism , Blood-Brain Barrier/drug effects , Exosomes/metabolism , Drug Delivery Systems/methods , Brain Diseases/drug therapy , Animals , Drug Carriers/chemistry , Nanoparticles/chemistry , Brain/metabolism , Brain/drug effects
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