Preparation of Adriamycin Hydrochloride Magnetic Thermosensitive Liposome Based on TiO 2@Fe3O4 and Its Physicochemical Properties，Magnetic Effect and Photothermal Effect Study
- VernacularTitle:基于TiO2@Fe3O4纳米材料的盐酸阿霉素磁性热敏脂质体制备及其理化特性、磁效应和光热效应考察
- Author:
Xiali ZHU
1
;
Huijuan ZHANG
2
;
Shasha WANG
1
;
Linghua LI
1
;
Yongyan JIA
1
Author Information
1. School of Pharmacy，Henan University of TCM，Zhengzhou 450046，China
2. School of Pharmacy，Zhengzhou University，Zhengzhou 450001，China
- Publication Type:Journal Article
- Keywords:
Nano-titanium dioxide;
Nano-ferroferric oxide;
TiO2@Fe3O4 nano materials;
Magnetic thermo-sensitive liposomes;
Adriamycin hydrochloride;
Photothermal therapy;
Photodynamic therapy;
Photothermal effect;
Magnetic targeting
- From:
China Pharmacy
2019;30(20):2752-2757
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE： To prepare Adriamycin hydrochloride （DOX） magnetic thermosensitive liposome （MTSL）， investigate its physicochemical properties， magnetic effect and photothermal effect， so as to provide reference for tumor chemo- therapy and photodynamic/photothermal therapy. METHODS： Using DOX as model drug， TiO2@Fe3O4 as photosensitizers and magnetic materials， DOX-TiO2@Fe3O4-MTSL was prepared with membrane dispersion method. The morphology and dispersibility were observed； particle size and Zeta potential were detected； encapsulation efficiency of the liposome were determined by centrifugal ultrafiltration and HPLC. Its paramagnetism property was also detected by magnetometer. Compared with DOX solution， in vitro release behavior of the liposome was investigated by dialysis method， and the release curves at different temperatures （at 37， 43 ℃） were compared. The photothermal conversion effect of the liposome and the production of reactive oxygen species （ROS） in human breast cancer MCF-7 cells were investigated by near infrared laser irradiation at 808 nm. RESULTS： Prepared DOX-TiO2@Fe3O4-MTSL was brown-black with good water dispersion， and was spherical in shape and uniform in size under electron microscopy. Average particle size was 250.6 nm； polydispersity index was 0.107； Zeta potential was （－7.76±3.41）mV； encapsulation efficiency was （92.3±3.2）％. Under the external magnetic field， the liposome could move in a directional direction and had obvious paramagnetism. Compared with DOX solution， the liposomes released slowly and showed obvious sustained- release characteristics. Compared with at 37 ℃， the drug release of liposome speeded up significantly at 43 ℃.With the increase of laser （808 nm） irradiation time， the temperature of the liposome kept rising， which had obvious photothermal conversion effect and could induce the increase of ROS in MCF-7 cells. CONCLUSIONS： DOX-TiO2@Fe3O4-MTSL is prepared succe- ssfully， which has uniform appearance， good physical and chemical properties. It has obvious paramagnetism sustained release effect and photothermal conversion efficiency， and can promote ROS production in MCF-7 cells under near infrared laser irradiation at 808 nm.
