Multifunctional targeted liposomal drug delivery for efficient glioblastoma treatment.

Multifunctional targeted liposomal drug delivery for efficient glioblastoma treatment.
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多功能靶向脂质体药物递送有效治疗胶质母细胞瘤

DOI:
10.18632/oncotarget.17976
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发表时间:
2017-09-15
期刊:
影响因子:
--
通讯作者:
Lu W
Lu W
中科院分区:
其他
文献类型:
--
作者:
Belhadj Z;Zhan C;Ying M;Wei X;Xie C;Yan Z;Lu W

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多形性胶质母细胞瘤(GBM)被认为是最恶性的脑肿瘤。由于血脑屏障(BBB)和血脑肿瘤屏障(BBTB)等多种屏障的存在极大地阻碍了化疗药物的积累和深入渗透,胶质瘤的治疗仍然是临床上最具挑战性的任务。为了克服这些障碍,我们开发了一种用环状RGD(c(RGDyK))和对羟基苯甲酸(pHA)修饰的多功能脂质体胶质瘤靶向药物递送系统(c(RGDyK)/pHA-LS),其中c(RGDyK)可以靶向BBTB和胶质瘤细胞上过表达的整合素αvβ3,而pHA可以靶向BBB上的多巴胺受体。在体外,c(RGDyK)/pHA-LS可以通过综合途径靶向胶质母细胞瘤细胞(U87)、脑毛细血管内皮细胞(bEnd.3)和脐静脉内皮细胞(HUVEC)。此外,c(RGDyK)/pHA-LS还可以增加脂质体封装的阿霉素对胶质母细胞瘤细胞的细胞毒性,并且能够穿过体外BBB和BBTB后渗透到胶质瘤球体内部。在体内,我们证明了 c(RGDyK)/pHA-LS 对颅内神经胶质瘤的靶向能力。正如预期的那样,c(RGDyK)/pHA-LS/DOX 的中位生存时间为 35 天,分别比 LS/DOX、c(RGDyK)-LS/DOX 和 pHA-LS/DOX 高 2.31、1.76 和 1.5 倍。研究结果表明,用 c(RGDyK) 和 pHA 修饰的多功能神经胶质瘤靶向药物递送系统在体外和体内表现出强大的抗神经胶质瘤效率,代表了一个有前途的神经胶质瘤治疗平台。
Glioblastoma multiforme (GBM) has been considered to be the most malignant brain tumors. Due to the existence of various barriers including the blood–brain barrier (BBB) and blood–brain tumor barrier (BBTB) greatly hinder the accumulation and deep penetration of chemotherapeutics, the treatment of glioma remains to be the most challenging task in clinic. In order to circumvent these hurdles, we developed a multifunctional liposomal glioma-targeted drug delivery system (c(RGDyK)/pHA-LS) modified with cyclic RGD (c(RGDyK)) and p-hydroxybenzoic acid (pHA) in which c(RGDyK) could target integrin αvβ3 overexpressed on the BBTB and glioma cells and pHA could target dopamine receptors on the BBB. In vitro, c(RGDyK)/pHA-LS could target glioblastoma cells (U87), brain capillary endothelial cells (bEnd.3) and umbilical vein endothelial cells (HUVECs) through a comprehensive pathway. Besides, c(RGDyK)/pHA-LS could also increase the cytotoxicity of doxorubicin encapsulated in liposomes on glioblastoma cells, and was able to penetrate inside the glioma spheroids after traversing the in vitro BBB and BBTB. In vivo, we demonstrated the targeting ability of c(RGDyK)/pHA-LS to intracranial glioma. As expected, c(RGDyK)/pHA-LS/DOX showed a median survival time of 35 days, which was 2.31-, 1.76- and 1.5-fold higher than that of LS/DOX, c(RGDyK)-LS/DOX, and pHA-LS/DOX, respectively. The findings here suggested that the multifunctional glioma-targeted drug delivery system modified with both c(RGDyK) and pHA displayed strong antiglioma efficiency in vitro and in vivo, representing a promising platform for glioma therapy.
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