用醇胆接种的石墨烯氧化物装载有义利诺坦,用于潜在的瘤治疗
Jia Cui1, Ziyi Zhang1, Han Zhong1
1College of Engineering and Applied Sciences, Nanjing University Nanjing 210023 China ztnj@nju.edu.cn.
RSC advances
|October 4, 2023
概括
修改后的石墨烯氧化物 (GO) 与醇胆 (GO-PCn) 的zwitterions有效地携带了irinotecan. 这种新型复合物证明了pH敏感药物释放和降低毒性,为改进癌症治疗铺平了道路.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术 纳米技术
- 药物输送系统 药物输送系统
背景情况:
- 石墨烯氧化物 (GO) 为药物输送应用提供了独特的二维结构.
- 开发生物相容纳米材料对于有效的癌症疗法至关重要.
- 控制药物释放特征可以提高治疗效果,减少副作用.
研究的目的:
- 合成和表征用二甲基烯基酸 (MPC) 兹维特里昂 (GO-PCn) 修饰的石墨烯氧化物.
- 使用GO-PCn平台创建一个含有氨酸的复合物 (irinotecan@GO-PCn).
- 为了评估潜在的瘤学应用,对pH敏感的药物释放和体外细胞毒性的irinotecan@GO-PCn复合物.
主要方法:
- 原子转移基聚合被用来将MPC的zwitterions移植到石墨烯氧化物上.
- 福里埃变换红外光谱法 (FTIR),拉曼光谱法,NMR,XRD和XPS被用于结构验证.
- 动态光散射 (DLS) 确定了修改后的GO的水力动力直径.
- 在不同的pH条件下进行了体外药物释放研究.
- 在体外细胞毒性测定中评估了GO-PCn的生物相容性和irinotecan@GO-PCn的毒性.
主要成果:
- 通过光谱和分析技术证实了GO与MPCzwitterions的成功修改.
- GO-PCn在水中表现出良好的分散性,平均水力动力直径约为170nm.
- 通过π-π堆叠,氨酸@GO-PCn复合物通过π-π堆叠实现了大约20%的高药载荷.
- 该复合物显示了pH敏感的虹素释放,在酸性环境中观察到的释放速度更快.
- 在实验室中,GO-PCn表现出较低的内在细胞毒性,并有效地降低了 irinotcan 的急性毒性.
结论:
- 醇胆改性石墨烯氧化物 (GO-PCn) 作为开发先进药物输送系统的有前途平台.
- 氨酸@GO-PCn复合物表现出受控的,对pH响应的药物释放和增强的生物相容性.
- 这种系统有可能提高基于色素的癌症治疗的安全性和有效性.
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