Cartilage-targeting exosomes for delivery of receptor antagonist of interleukin-1 in osteoarthritis treatment.

ABSTRACT:

Objective

Exosomes are nano-sized cell-secreted vesicles naturally involved in joint tissue crosstalk and hold promise as drug carriers. Their negatively charged lipid bilayer, however, results in electrostatic repulsion from the anionic cartilage matrix limiting their applications in tissue targeting and drug delivery. Here we engineer cartilage targeting exosomes by reversing their net surface charge and use them for sustained delivery of interleukin-1 receptor antagonist (IL-1RA), a disease-modifying osteoarthritis (OA) drug that suffers from rapid joint clearance and poor cartilage uptake.

Design

Exosomes were surface modified by anchoring optimally charged cartilage targeting cationic motifs, Avidin (Av) and arginine-rich cationic peptide carrier (CPC). IL-1RA was surfa

SUBMITTER: Pathrikar TV 

PROVIDER: S-EPMC12301852 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature