文献:
Folic acid-modified ROS-responsive nanoparticles encapsulating luteolin for targeted breast cancer treatment
文献链接:
https://pubmed.ncbi.nlm.nih.gov/34402706/作者:
Yu Wang, Qianmei Wang, Wei Feng, Qian Yuan, Xiaowei Qi, Sheng Chen, PuYao, Qing Dai, Peiyuan Xia, Dinglin Zhang & Fengjun Sun
相关产品:
DSPE-PEG3400-FA(磷脂-聚乙二醇3400-叶酸)
原文摘要:
Luteolin (Lut) is a natural flavonoid polyphenolic compound with multiple pharmacological activities,such as anti-oxidant, anti-inflammatory, and anti-tumor effects. However, the poor aqueous solubility and low bioactivity of Lut restrict its clinical translation. Herein, we developed a reactive oxygen species (ROS)-responsive nanoplatforms to improve the bioactivity of Lut. Folic acid (FA) was employed to decorate the nanoparticles (NPs) to enhance its targeting ability. The size of Lut-loaded ROS-responsive nanoparticles (Lut/Oxi-aCD NPs) and FA-modified Lut/Oxi-aCD NPs (Lut/FA-Oxi-aCD NPs) is 210.5 ± 6.1 and 196.7 ± 1.8 nm, respectively. Both Lut/Oxi-aCD NPs and Lut/FA-Oxi-aCD NPs have high drug loading (14.83 ± 3.50 and 16.37 ± 1.47%, respectively). In vitro cellular assays verified that these NPs could be efficiently internalized by 4T1 cells and the released Lut from NPs could inhibit tumor cells proliferation significantly. Animal experiments demonstrated that Lut/Oxi-aCD NPs, especially Lut/FA-Oxi-aCD NPs obviously accumulated at tumor sites, and inhibited tumor growth 3 times compared to the Lut group. In conclusion, the antitumor efficacy of Lut was dramatically improved by targeting delivery with the ROS-responsive nanoplatforms.
DSPE - PEG2000 主要由两部分组成,即 DSPE(1,2 - 二硬脂酰 - sn - 甘油 - 3 - 磷酸乙醇胺)和 PEG2000(分子量为 2000 的聚乙二醇)。DSPE 部分包含了磷脂结构,其具有两条较长的硬脂酸(C18)烃链,这使得分子的一端具有较强的疏水性。而 PEG2000 是由乙二醇单元聚合而成的聚合物,它具有良好的亲水性。
DSPE - PEG3400 - FA 是一种复杂的生物化学分子。它由DSPE(1,2 - 二硬脂酰 - sn - 甘油 - 3 - 磷酸乙醇胺)、PEG3400(分子量为 3400 的聚乙二醇)和 FA(叶酸,folic acid)三部分组成。DSPE 部分是一种磷脂,具有两条长的脂肪酸链,这使得分子的一端具有疏水性。PEG3400 是亲水性的聚合物,它连接 DSPE 和 FA,起到增加分子水溶性、改善生物相容性的作用。叶酸(FA)是一种生物活性分子,含有对氨基苯甲酸和谷氨酸结构,它在细胞代谢等过程中有重要作用,并且能够特异性地与细胞表面的叶酸受体结合该文献。基于相关性质,合成流程如下:
图:反应流程
采用改进的纳米沉淀/自组装方法制备了润滑油负载的NPs。将卵磷脂和DSPE-PEG2000分散在无水乙醇和去离子水中,然后在温和搅拌下加热。同时,将Lut和Oxi-aCD溶解在甲醇和二甲亚砜(DMSO)中。将含药溶液滴入上述预热的脂质分散溶液中,然后涡旋。在室温下缓慢搅拌,自组装后,收集Lut/Oxi-aCDNPs,离心。收获的NPs用 F127洗涤,并在超纯水中重悬。cy5标记的氧化aCDNPs(cy5标记的氧化aCD作为载体)和空白的氧化aCDNPs(不含润滑油封装)按照类似的程序制备。此外,除使用DSPEPEG2000和DSPE-PEG3400-FA制备外,FA修饰的Lut/Oxi-aCDNPs(Lut/FA-Oxi-aCD)制备NPs。另外,采用乳化液溶剂蒸发法制备Lut/PLGA NPs。使用相关仪器进行表征测定。
图:制备流程
结论:
该文献成功合成出了Lut/Oxi-aCD NPs和经DSPE-PEG3400-FA修饰的Lut/FA-Oxi-aCD NPs,
结果表明,Lut/Oxi-aCD NPs和Lut/FA-Oxi-aCD NPs的靶向能力提高、均具有高载药性,并可以被细胞有效地内化。特别是经DSPE-PEG3400-FA修饰的Lut/FA-Oxi-aCD NPs在tumour部位明显积累,能有效的抑制tumou生长。