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- W4386200220 abstract "Local delivery of nanoparticles holds promise for colorectal cancer (CRC) therapy. However, the presence of the mucus layer on the epithelium poses a significant challenge to drug delivery, thereby adversely affecting treatment efficiency. It is crucial to develop efficient drug delivery carriers that can effectively overcome mucus barriers to treat colorectal cancer. Herein, we utilized poly (1,4-butadiene)-b-poly (ethylene oxide) polymers to prepare four distinct geometries of polymeric micelles, namely linear micelles (LMs), worm-like micelles (WLMs), large spherical micelles (LSMs), and small spherical micelles (SSMs) to investigate the influence of shape effects on overcoming colonic mucosal barrier. We found that the carriers exhibited diverse shapes while maintaining comparable physicochemical properties. Of these, WLMs had an aspect ratio similar to segmented filamentous bacteria, which exhibited superior mucus penetration ability, leading to prolonged drug release kinetics and faster entry into epithelial cells compared to LSMs. Furthermore, rectally administrated 10-hydroxycamptothecin-loaded WLMs traversed the colorectal mucus in orthotopic CRC nude mice model, penetrated and accumulated within tumor tissue, and effectively aggregated within cancer cells, thereby inducing significantly robust antitumor outcomes in vivo. These findings underscore the significance of shape design in overcoming colonic mucosal absorption barriers, offering a novel approach for the development of drug delivery carriers tailored for effective tumor therapy." @default.
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- W4386200220 date "2023-08-01" @default.
- W4386200220 modified "2023-09-29" @default.
- W4386200220 title "Worm-like micelles facilitate the intestinal mucus diffusion and drug accumulation for enhancing colorectal cancer therapy" @default.
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- W4386200220 doi "https://doi.org/10.1016/j.cclet.2023.108967" @default.
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