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RGD 修饰的载长春瑞滨和汉防己甲素脂质体治疗耐药脑胶质瘤的疗效。

The efficacy of RGD modified liposomes loaded with vinorelbine plus tetrandrine in treating resistant brain glioma.

机构信息

a School of Pharmacy , Liaoning University of Traditional Chinese Medicine , Dalian , China.

b Linyi Food and Drug Testing Center , Linyi , China.

出版信息

J Liposome Res. 2019 Mar;29(1):21-34. doi: 10.1080/08982104.2017.1408649. Epub 2017 Dec 7.

Abstract

Brain glioma is one of the most common and devastating intracranial malignancies with a high mortality. Chemotherapy for brain glioma is not ideal due to blood brain barrier (BBB) and multidrug resistance (MDR). The objectives of the present study were to develop a kind of RGD (Arg-Gly-Asp) tripeptide modified vinorelbine plus tetrandrine liposomes to achieve BBB transportation, MDR reversion and glioma cell targeting simultaneously. The studies were performed on glioma cells, resistant glioma cells and glioma-bearing mice. Results showed that the constructed liposomes with suitable physicochemical properties could significantly enhance the transport across BBB, obviously accumulate in glioma cells, and exhibit evident capabilities in diminishing brain glioma in mice. Action mechanism studies indicated that the enhanced anticancer efficacy could be attribute to the follows: prolonged elimination half-life (7.093 ± 1.311 h); increased AUC (28.92 ± 2.66 mg/L*h); transporting across BBB; enhanced cellular uptake; down-regulation on P-gp (0.49 ± 0.06 fold); inducing apoptosis via activating caspase 8, 9, and 3 (2.40 ± 0.22, 3.57 ± 0.29, and 4.33 ± 0.30 folds, respectively). In conclusion, the RGD modified vinorelbine plus tetrandrine liposomes may offer a promising therapeutic strategy for treatment of brain glioma.

摘要

脑胶质瘤是最常见和最具破坏性的颅内恶性肿瘤之一,死亡率很高。由于血脑屏障 (BBB) 和多药耐药 (MDR),脑胶质瘤的化疗效果并不理想。本研究的目的是开发一种 RGD(精氨酸-甘氨酸-天冬氨酸)三肽修饰的长春瑞滨加汉防己甲素脂质体,以实现 BBB 转运、MDR 逆转和神经胶质瘤细胞靶向。在神经胶质瘤细胞、耐药神经胶质瘤细胞和神经胶质瘤荷瘤小鼠上进行了研究。结果表明,构建的具有合适理化性质的脂质体能够显著增强跨 BBB 的转运,明显在神经胶质瘤细胞中积聚,并在小鼠中表现出明显的减少脑胶质瘤的能力。作用机制研究表明,增强的抗癌疗效可归因于以下几个方面:延长消除半衰期(7.093±1.311 h);增加 AUC(28.92±2.66 mg/L*h);跨 BBB 转运;增强细胞摄取;下调 P-gp(0.49±0.06 倍);通过激活半胱天冬酶 8、9 和 3 诱导细胞凋亡(分别为 2.40±0.22、3.57±0.29 和 4.33±0.30 倍)。总之,RGD 修饰的长春瑞滨加汉防己甲素脂质体可能为治疗脑胶质瘤提供一种有前途的治疗策略。

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