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Delivery of hydroxycamptothecin via sonoporation: An effective therapy for liver fibrosis.
Journal of Controlled Release 2023 May 5
Hepatic fibrosis is the common pathway for most chronic liver diseases, characterized by excessive accumulation of extracellular matrix (ECM) proteins. It has been shown that fibrotic ECM significantly hindered passage of nanoparticles. Efforts have been made by decorating degrading enzymes on surfaces of nanosized delivery vehicles to improve drug delivery. However, these strategies are restricted by limiting shelf-life. Inspired by the application of sonoporation in assisting drug delivery through blood-brain barrier and tumor tissues, we investigated whether sonoporation can be an alternative strategy in improving drug delivery for fibrotic diseases. Hydroxycamptothecin (HCPT), a potential drug in treating liver fibrosis, was selected as a model drug to evaluate the drug delivery efficiency and therapeutic effect among three delivery strategies, i.e., (1) injection solution, (2) delivery through liposomes, and (3) delivery via sonoporation. Our study showed that in addition to the improved drug delivery efficiency, the combination of HCPT and sonoporation led to synergistic effect and the mechanisms were investigated. The treatment group of HCPT delivered with sonoporation achieved the most significant attenuation in liver fibrosis among the three delivery strategies.
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