Journal of Controlled Release p. 66 - 78 (2019)
Update date:2022-08-11
Topics:
Li, Shanshan
Xie, Aiqing
Li, Hui
Zou, Xiang
Zhang, Qixiong
A self-assembled and oxidation-degradable Janus-prodrug, termed as Bud-ATK-Tem (B-ATK-T), was fabricated by ROS-responsive aromatized thioketal (ATK) linked anti-inflammatory drug budesonide (Bud) and antioxidant tempol (Tem). Benefiting from the hydrophobic interactions and π-π stacking interactions of ATK, prodrug B-ATK-T could self-assemble into nanoparticles (NP) in water containing lecithin and DSPE-PEG2K. The morphology of B-ATK-T NP (approximate 100–120 nm) was confirmed to be regular spherical by transmission electron microscope. B-ATK-T NP was endowed high drug loading content with 41.23% for Bud and 15.55% for Tem. The rapid drug release from B-ATK-T NP proceeded in an extensive reactive oxygen species (ROS)-dependent manner. More than 98% of Bud and Tem in B-ATK-T NP could release in the mimic inflammation microenvironment or phorbol-12-myristate-13-acetate (PMA)-stimulated macrophages within short time. The release of drugs in a simultaneous and proportional manner ensures that B-ATK-T NP can increase the combined efficacy of anti-inflammation and anti-oxidation. It is worth noting that B-ATK-T NP could be passively accumulated and dramatically increasing the maximum drugs concentration in the inflamed colon of mice with inflammatory bowel disease (IBD) by oral route, and avoiding potential systemic side effects. B-ATK-T NP could not only relieve colitis via inhibiting the expression of oxidative and proinflammatory mediators more than combination of free drugs, but also significantly reduce colitis-caused death. Taken together, the self-assembled, Janus-prodrug B-ATK-T NP is a promising candidate therapies for IBD, even for other inflammatory diseases.
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