阿霉素和β-榄香烯共载,ph敏感的纳米结构脂质载体
瑞禧生物2025-02-13   作者:lkr   来源:
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文献:Lung cancer combination therapy: doxorubicin and β-elemene co-loaded, pH-sensitive nanostructured lipid carriers

文献链接:https://readpaper.com/paper/2929104561

作者:Chengsong Cao ,Qun Wang ,Yong Liu

相关产品:

mPEG-Hyd-DSPE  甲氧基聚乙二醇 - 腙键 - 二硬脂酰磷脂酰乙醇胺

mPEG-DSPE  甲氧基聚乙二醇 - 二硬脂酰磷脂酰乙醇胺

原文摘要:

Purpose: Co-delivery of drugs to achieve the synergistic anticancer effect is a promising strategy for lung cancer therapy. The purpose of this research is to develop a doxorubicin (DOX) and β-elemene (ELE) co-loaded, pH-sensitive nanostructured lipid carriers (DOX/ ELE Hyd NLCs).

Methods: In this study, DOX/ELE Hyd NLCs were produced by a hot homogenization and ultrasonication method and used for lung cancer treatment. In vitro and in vivo efficiency as well as toxicity of the system was evaluated on lung cancer cell lines and lung tumor-bearing mice.

Results: DOX/ELE Hyd NLCs had a particle size of 190 nm, with a PDI lower than 0.2. DOX/ELE Hyd NLCs exhibited a significantly enhanced cytotoxicity (drug concentration causing 50% inhibition was 7.86 μg/mL), synergy antitumor effect (combination index lower than 1), and profound tumor inhibition ability (tumor inhibition ratio of 82.9%) compared with the non pH-responsive NLCs and single-drug-loaded NLCs.

Conclusion: Since the synergistic effect of the drugs was found in this system, it would have great potential to inhibit lung tumor cells and tumor growth.

 

mPEG - Hyd - DSPE是一种由三部分组成的化合物。mPEG(甲氧基聚乙二醇)部分提供了良好的亲水性和生物相容性,并且可以减少材料与生物体免疫系统的相互作用。与 mPEG - Hyd - DSPE 相比,mPEG - DSPE 缺少腙键这种具有特殊反应性的连接键。它是一种较为简单的两亲性分子,同样由亲水性的 mPEG 部分和疏水性的 DSPE 部分组成。DOX/ELE Hyd NLCs 是一种纳米脂质载体,其中包含了阿霉素(DOX)和榄香烯(ELE)两种化合物,并且通过腙键(Hyd)连接。纳米脂质载体(NLCs)本身是由脂质成分组成的纳米粒,其结构类似于脂质体,具有脂质双层膜。化合物通过腙键连接在脂质载体上或者包裹在脂质双层内部和内部水相中。采用热均质法和超声法制备DOX/ELE Hyd NLCs制备方法如下:

制备DOX/ELEHydNLCs的方案图 

图为:制备DOX/ELEHydNLCs的方案图

 

mPEG-Hyd-DSPE和mPEG-DSPE在DOX/ELEHydnlc制备中的应用:

采用热均质法和超声法制备了DOX/ELEHydNLCs。首先,将DOX·HCl与TEA在DMSO中搅拌过夜,得到DOX碱。将复合醇®888 ATO和米甘醇®812混合,加热至融化;然后将DOX和ELE加入到混合物中,搅拌形成油相。将mPEG-Hyd-DSPE、卵磷脂和Tween®80溶解在水中中,并加热至得到水相。然后将水相加入油相中,在振幅下进行。

DOX和ELE共负载的NLCs不含pH敏感的Hyd(DOX/ELE NLCs),采用相同的方法使用mPEG-DSPE而不是mPEG-Hyd-DSPE制备。采用相同的方法制备DOX单药ph敏感NLCs(DOX Hyd NLCs),使用DOX,不添加ELE。采用相同的方法制备ELE单药ph敏感NLCs(NLCs,ELEHydNLCs),使用ELE,不添加DOX。采用相同的方法制备空白ph敏感NLCs(Hyd NLCs),不添加ELE和DOX。将DOX·HCl分离于ELE注射液制备DOX和ELE注射液(DOX/ELE INJ)。

 

NLCs的粒径 

图为:NLCs的粒径

 

结论:使用含有mPEG-Hyd-DSPE的酸敏感肼(Hyd)键设计了ph敏感的纳米载体。NLCs含有ph可分裂的mPEG-Hyd-DSPE,它在细胞外腔室的中性生理条件下应该是稳定的。在进入pH降低的环境后,如一些tumor的细胞外空间,预计该复合物会在ph敏感的肼键分裂后释放更多的化合物。姜黄素负载ph敏感的混合脂质/嵌段共聚物纳米级给药系统,它们在较低的pH中获得了更多的化合物释放。体外释放试验结果表明,ph敏感的DOX/ELE Hyd NLCs释放速度迅速。这可能是ph敏感的nlc可以被酸性pH触发并更快地从载体释放化合物的证据。