Construction and in Vitro Study of Glioma-Targeted Cell Membrane Biomimetic Delivery System
- VernacularTitle: 脑胶质瘤靶向的细胞膜仿生递药系统的构建与体外评价
- Author:
Mei HE
1
Author Information
- Publication Type:Journal Article
- Keywords: Blood-brain barrier; Cell membrane-coated drug delivery system; Glioma; Mesoporous silica nanoparticles; Targeting
- From: Chinese Pharmaceutical Journal 2020;55(5):367-374
- CountryChina
- Language:Chinese
- Abstract: OBJECTIVE: To construct a biomimetic delivery system (U251/MSN-DOX), and assess its application of glioma targeted therapy. METHODS: U251 cell membrane was coated on the surface of mesoporous silica nanoparticles(MSN) by co-extrusion to prepare cell membrane biomimetic nanoparticles U251/MSN-DOX. The particle size, potential and morphology were characterized. The physical characteristics, loading content (LC) and encapsulation efficiency (EE) of these nanoparticles were determined. Their toxicity of normal cells was investigated. Their cellular uptake of different formulations in U251 was studied by flow cytometry and fluorescence confocal microscope. Additionally, we assessed the transmembrane transport efficiency of nanoparticles via in vitro BBB. RESULTS: The cell membrane-coated nanoparticles U251/MSN were spherical, and a distinct "core-shell" structure could be observed. The particle size was (135.70±3.85) nm, the LC was (18.57±2.17)%, and the EE was (64.99±2.52)%. The cell experiment showed that U251/MSN had low cytotoxicity and U251/MSN-DOX exhibited stronger cellular uptake ability and BBB transporting efficiency. CONCLUSION: The glioma cell membrane can be coated on the surface of MSN to construct biomimetic nanoparticles U251/MSN. The biomimetic nanoparticles not only are capable of targeting the homologous tumor cells, but also show the enhanced ability to penetrate BBB, which indicate potential applications in the field of tumor targeted drug delivery especially in brain tumor.
