比较基于透明质酸的胶束和基于聚乙二醇的胶束对逆转多药耐药性和增强体内外抗肿瘤疗效的作用。
Comparison of hyaluronic acid-based micelles and polyethylene glycol-based micelles on reversal of multidrug resistance and enhanced anticancer efficacy in vitro and in vivo.
机构信息
a School of Chinese Materia Medica , Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine , Beijing , PR China.
出版信息
Drug Deliv. 2018 Nov;25(1):330-340. doi: 10.1080/10717544.2018.1428385.
Polyethylene glycol (PEG)-based block copolymer micelles and hyaluronic acid (HA)-based grafted copolymer micelles have been widely investigated in chemotherapy. In this study, to evaluate the differences among HA-based grafted polymer micelles, PEG-based block polymer micelles and the mixed of these two micelles in enhancing antitumor effects and overcoming MDR, two amphiphilic vitamin E succinate (VES) derivatives, HA VES (HA-g-VES) and PEG 2000 VES (TPGS2k), were applied as nanocarriers to prepare HA-VES micelles (HA-PMs), TPGS2k micelles (TPGS2k-PMs) and the mixed micelles (HA/TPGS2k-PMs) for the co-delivery of doxorubicin (DOX) and curcumin (Cur). With the addition of TPGS2k, the particle size of HA/TPGS2k-PMs (153.37 ± 1.00 nm) was smaller than that of HA-PMs (223.83 ± 1.84) but significantly larger than that of TPGS2k-PMs (about 20 nm). The loading efficiency of HA/TPGS2k-PMs was 7.10%, which was lower than HA-PMs (8.31 ± 0.15%) but higher than TPGS2k-PMs (4.38 ± 0.24%). In vitro, HA/TPGS2k-PMs and TPGS2k-PMs exhibited higher cytotoxicity and reversal MDR effects than HA-PMs in MCF-7/Adr cells. However, HA/TPGS2k-PMs, HA-PMs and TPGS2k-PMs all significantly improved the tumor biodistribution, the antitumor effects and reduced the side effects of DOX in 4T1-tumor-bearing mice, but these three micelles displayed no differences in vivo. Therefore, EPR passive targeting effects caused by PEGylated micelles and CD44 active targeting effects caused by HA-based micelles have no significant variance in the delivery of antitumor drugs by i.v.
聚乙二醇(PEG)基嵌段共聚物胶束和透明质酸(HA)基接枝共聚物胶束已广泛应用于化疗领域。在这项研究中,为了评估基于 HA 的接枝聚合物胶束、PEG 基嵌段聚合物胶束以及这两种胶束混合物在增强抗肿瘤效果和克服多药耐药性方面的差异,我们将两种两亲性维生素 E 琥珀酸酯(VES)衍生物,HA VES(HA-g-VES)和 PEG 2000 VES(TPGS2k),用作纳米载体来制备 HA-VES 胶束(HA-PMs)、TPGS2k 胶束(TPGS2k-PMs)和混合胶束(HA/TPGS2k-PMs),以共递送阿霉素(DOX)和姜黄素(Cur)。随着 TPGS2k 的加入,HA/TPGS2k-PMs(153.37 ± 1.00nm)的粒径小于 HA-PMs(223.83 ± 1.84nm),但明显大于 TPGS2k-PMs(约 20nm)。HA/TPGS2k-PMs 的载药效率为 7.10%,低于 HA-PMs(8.31 ± 0.15%),但高于 TPGS2k-PMs(4.38 ± 0.24%)。体外实验表明,在 MCF-7/Adr 细胞中,HA/TPGS2k-PMs 和 TPGS2k-PMs 表现出比 HA-PMs 更高的细胞毒性和逆转多药耐药性作用。然而,HA/TPGS2k-PMs、HA-PMs 和 TPGS2k-PMs 均能显著改善荷瘤 4T1 小鼠的肿瘤组织分布、抗肿瘤效果,并降低 DOX 的副作用,但这三种胶束在体内无差异。因此,PEG 化胶束的 EPR 被动靶向作用和基于 HA 的胶束的 CD44 主动靶向作用在静脉给药时对抗肿瘤药物的传递没有显著差异。