Technology optimization and in vitro anti-tumor effect evaluation of reactive oxygen species-responsive metho-trexate-modified paclitaxel/icariin micelles
- VernacularTitle:活性氧响应型甲氨蝶呤修饰紫杉醇/淫羊藿苷胶束的工艺优化与体外抗肿瘤作用评价
- Author:
Naijian ZOU
1
;
Liang KONG
2
;
Lei CHANG
1
;
Pengbo WAN
1
;
Xiaolin JIANG
1
;
Mingdian YUAN
1
;
Yingqiang LU
1
Author Information
1. Dept. of Urology Surgery，the Affiliated Hospital of Liaoning University of Traditional Chinese Medicine，Shenyang 110032，China
2. School of Pharmacy，Liaoning University of Traditional Chinese Medicine，Liaoning Dalian 116600，China
- Publication Type:Journal Article
- Keywords:
reactive oxygen species-responsive micelles;
methotrexate;
targeted drug delivery;
paclitaxel;
icariin
- From:
China Pharmacy
2025;36(3):285-292
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE To prepare reactive oxygen species （ROS）-responsive methotrexate （MTX）-modified paclitaxel （PTX）/icariin （ICA） micelles （MTX-oxi-Ms@PTX/ICA）， and perform technology optimization and in vitro anti-tumor effect evaluation. METHODS Synergistic toxicity concentration range of PTX and ICA was screened by synergistic toxicity test. The micelles were prepared by thin film hydration method， and their technology was optimized by response surface methodology. The fundamental characteristics of the micelles prepared by the optimal technology were evaluated. The micelles’ cytotoxicity， targeting ability to renal carcinoma RENCA cells of mice， and their inhibitory effects on invasion and migration were assessed. RESULTS Results of synergistic toxicity experiments demonstrated that the strongest synergistic effect occurred when PTX concentrations ranged from 2.5 to 10 μmol/L and ICA concentrations ranged from 5 to 15 μmol/L. The optimal technology of MTX-oxi-Ms@PTX/ ICA was determined to include 80 mg Soluplus®， Soluplus® and TPGS1000 mass ratio of 4∶1 （mg/mg）， 2 mg DSPE-PEG2000-TK- PEG5000， 2 mg DSPE-PEG2000-MTX， 1 mg PTX， and 1.5 mg ICA， with a hydration temperature of 35 ℃ and a formulation volume of 5 mL. Under the optimal conditions， average encapsulation efficiency of PTX and ICA in 3 batches of MTX-oxi- Ms@PTX/ICA reached 92.75%， the critical micelle concentration （CMC） was 0.007 9 mg/mL， the particle size was （62.09±1.68） nm， the polydispersity index （PDI） was 0.046±0.032， and the Zeta potential was （－2.47±0.15） mV. Within 30 days of placement， there was no significant change E-mail：yingqiang_1126@163.com in particle size and polydispersity index of micelle. In vitro release experiments showed that MTX-oxi-Ms@PTX/ICA released drugs more rapidly in oxidative environments. The half maximal inhibitory concentration of MTX-oxi-Ms@PTX/ICA against RENCA cells was （5.170±0.036） μmol/L. In vitro cellular uptake experiments indicated that compared with unmodified micelles， MTX modified micelles had stronger targeting effects on cancer cells， and also significantly enhanced the inhibitory ability of invasion and migration of RENCA cells （P＜0.05）. CONCLUSIONS MTX-oxi-Ms@PTX/ICA micelles are successfully prepared， which exhibit high encapsulation efficiency， low critical micelle concentration， and good stability. These micelles demonstrate significant cytotoxicity against RENCA cells and effectively inhibit cancer cell invasion and migration.
