Anzeige
Erschienen in:
10.07.2018 | Original Research Article
Preparation of Folic Acid-Targeted Temperature-Sensitive Magnetoliposomes and their Antitumor Effects In Vitro and In Vivo
Erschienen in: Targeted Oncology | Ausgabe 4/2018
Einloggen, um Zugang zu erhaltenAbstract
Background
Ovarian cancer is a common gynecologic malignancy with poor prognosis, requiring innovative new therapeutic strategies. Temperature-controlled drug delivery to cancer cells represents a novel, promising, targeted treatment approach.
Objective
We prepared folate receptor-targeted thermosensitive liposomes wrapped with the HSP90 inhibitor 17-AAG and superparamagnetic material (17-AAG/MTSLs-FA), and tested the efficacy of these targeted magnetoliposomes in vitro and in vivo.
Methods
Magnetic thermosensitive liposomes wrapped with 17-AAG were coprecipitated with Fe3O4 magnetic nanoparticles and prepared by a rotary evaporation method. Experiments were conducted with SKOV3 human ovarian cancer cells and MCF7 human breast carcinoma cells to evaluate the anti-tumor effects.
Results
17-AAG/MTSLs-FA prepared in this study met the basic requirements for therapeutic application. The preparation method is relatively simple and the raw materials are readily available. The product exhibited strong magnetism, high encapsulation efficiencies, and satisfactory performance. The liposomes combined with hyperthermia significantly inhibited the proliferation of SKOV3 cells and induced apoptosis. Experiments using a mouse subcutaneous model as well as an ascites tumor xenograft model indicated that 17-AAG/MTSLs-FA was stable in vivo and effectively targeted tumor tissues expressing the folate receptor.
Conclusions
Folic acid-conjugated 17-AAG magnetic thermosensitive liposomes in combination with an alternating magnetic field for heating can achieve a synergistic anti-tumor effect of chemotherapy and heat treatment, potentially offering a new method for ovarian cancer treatment.