Preparation and evaluation of schisandrin B-loaded F127 modified lipid-polymer nanoparticles for inhibition of breast cancer lung metastasis / 中国中药杂志

In the current study, schisandrin B(SchB)-loaded F127 modified lipid-polymer hybrid nanoparticles(SchB-F-LPNs) were developed to improve the inhibition of breast cancer lung metastasis. Modified nanoprecipitation method was used to prepare SchB-F-LPNs. The nanoparticles were spherical in shape with shell-core structure by TEM observation. SchB-F-LPNs showed a mean particle size of(234.60±6.11) nm with zeta potential of(-5.88±0.49) mV. XRD results indicated that SchB existed in the nanoparticles in an amorphous state. The apparent permeability coefficient through porcine mucus of F-LPNs was 1.43-fold of that of LPNs as shown in the in vitro mucus penetration study. The pharmacokinetics study showed that the C_(max) of SchB was(369.06±146.94) μg·L~(-1),(1 121.34±91.65) μg·L~(-1) and(2 951.91±360.53) μg·L~(-1) respectively in SchB suspensions group, SchB-LPNs group and SchB-F-LPNs group after oral administration in rats. With SchB suspensions as the reference formulation, the relative bioavailability of SchB-F-LPNs was 568.60%. SchB-F-LPNs inhibited the morphological change during transforming growth factor-β1(TGF-β1)-induced epithelial-mesenchymal transition. In addition, SchB-F-LPNs significantly decreased the number of metastatic pulmonary nodules in 4 T1 tumor-bearing mice, suggesting that SchB-F-LPNs may inhibit the metastasis of breast cancer. These results reveal the promising potential of SchB-F-LPNs in treatment of breast cancer lung metastasis.

Research Progress on Organic-inorganic Hybrid Nanocarriers of Active Ingredients from Chinese Materia Medica / 中国实验方剂学杂志

Nanocarriers for delivering active ingredients from Chinese materia medica play an important role in improving their solubility, membrane permeability and in vivo biological behavior, enhancing the therapeutic efficiency and reducing side effects. They are promising for extensive research and application. As novel nanocarriers, organic-inorganic hybrid nanocarriers composed of organic materials or carriers and inorganic parts possess the dual advantages of organic carriers and inorganic carriers. They may exert desirable action in drug delivery. In addition, they have been designed to improve the stability and biocompatibility, further increase the therapeutic efficiency and reduce side effects. They have also been investigated to achieve multi-functionality. In this paper, the research and application of organic-inorganic hybrid nanocarriers delivering active ingredients from Chinese materia medica were summarized and analyzed. The development and application prospect of organic-inorganic hybrid nanocarriers are prospected. The aim of this review is to provide a reference for the investigation of new drug delivery system for delivering active ingredients from Chinese materia medica efficiently and safely.