数字农科院2.0

Alginate/sodium carboxymethyl cellulose nanocomposite hydrogels loaded with berberine-rosmarinic acid nanoparticles: pH-responsive release for enhanced acid stability and colon-targeted delivery

文献类型： 外文期刊

作者： Xiaoyang Xia;Zhen Zhang;Zhixiong He;Zhenxia Xu;Li Chen;Fenghong Huang;Xia Xiang

作者机构：

关键词： Berberine;Colorectal cancer;Hydrogel;Rosmarinic acid;Self-assembly mechanism

期刊名称： International Journal of Biological Macromolecules

ISSN： 0141-8130

年卷期： 2025 年 328 卷

页码：

收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： Berberine (BBR) and rosmarinic acid (RA) exhibit potent anticancer effects against colorectal cancer; however, they still suffer from poor stability and low bioavailability. Herein, we developed a pH-responsive and colon-targeted delivery system by encapsulating self-assembled BBR-RA nanoparticles (BBR-RA NPs) within Ca2+-crosslinked alginate (ALG)/sodium carboxymethyl cellulose (CMC) hydrogels (ALG/CMC/BBR-RA NPs). The physicochemical characteristics of BBR-RA NPs and ALG/CMC/BBR-RA NPs were analyzed by UV–vis spectroscopy, FT-IR, 1H NMR, TEM, SEM, and XRD. Molecular dynamics simulations revealed that the formation of BBR-RA NPs was driven by π-π conjugation, electrostatic interactions, and hydrogen bonding. BBR-RA NPs exhibited a high encapsulation efficiency (72.69 %) and loading capacity (54.08 %), possessing good stability under physiological conditions. Rheological assessments confirmed the excellent mechanical properties and stability of ALG/CMC/BBR-RA NPs. Swelling and degradation studies, along with in vitro release, demonstrated that the hydrogels effectively protected BBR-RA NPs from premature degradation in acidic environments while enabling pH-responsive and controlled release in colon. Moreover, ALG/CMC/BBR-RA NPs enhanced cellular uptake, reactive oxygen species (ROS) generation, and apoptosis in CT26 and HT29 colorectal cancer cells, outperforming free BBR and RA. These findings underscore the potential of ALG/CMC/BBR-RA NPs for improving the anticancer bioactivities of BBR and RA in colorectal cancer treatment.

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