Targeted Extracellular Vesicles Delivered Verrucarin A to Treat Glioblastoma.

Targeted Extracellular Vesicles Delivered Verrucarin A to Treat Glioblastoma.
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靶向细胞外囊泡递送疣孢菌素A治疗胶质母细胞瘤。

DOI:
10.3390/biomedicines10010130
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发表时间:
2022-01-07
期刊:
影响因子:
4.7
通讯作者:
Liu X
Liu X
中科院分区:
工程技术3区
文献类型:
--
作者:
Chen K;Si Y;Guan JS;Zhou Z;Kim S;Kim T;Shan L;Willey CD;Zhou L;Liu X

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胶质母细胞瘤约占神经胶质瘤的 50%,是最具侵袭性、高度异质性和恶性的脑肿瘤。本研究的目的是开发和评估一种新的靶向疗法,即用单克隆抗体导向的细胞外囊泡 (mAb-EV) 递送的高效天然化合物 verrucarin A (Ver-A)。首先,使用免疫组织化学染色、流式细胞术和蛋白质印迹法证实了胶质母细胞瘤患者组织和细胞系中表皮生长因子受体(EGFR)的高表面表达。 mAb-EV-Ver-A 是通过包装 Ver-A 并将抗 EGFR mAb 标记到 HEK293F 培养物产生的 EV 来构建的。共聚焦显微镜和体内成像系统证明 mAb-EV 可以穿透血脑屏障,靶向颅内胶质母细胞瘤异种移植物,并在细胞内输送药物。体外细胞毒性研究显示 Ver-A 的 IC50 值为 2-12 nM。耐受剂量研究中主要器官的苏木精和伊红染色表明 mAb-EV-Ver-A 的全身毒性极小。最后,颅内异种移植模型的体内抗肿瘤功效研究表明,EGFR mAb-EV-Ver-A有效抑制胶质母细胞瘤生长,但与VEGF mAb联合使用并没有提高治疗效果。这项研究表明 mAb-EV 是一种有效的药物输送载体,天然 Ver-A 具有治疗胶质母细胞瘤的巨大潜力。
Glioblastomas, accounting for approximately 50% of gliomas, comprise the most aggressive, highly heterogeneous, and malignant brain tumors. The objective of this study was to develop and evaluate a new targeted therapy, i.e., highly potent natural compound verrucarin A (Ver-A), delivered with monoclonal antibody-directed extracellular vesicle (mAb-EV). First, the high surface expression of epidermal growth factor receptor (EGFR) in glioblastoma patient tissue and cell lines was confirmed using immunohistochemistry staining, flow cytometry, and Western blotting. mAb-EV-Ver-A was constructed by packing Ver-A and tagging anti-EGFR mAb to EV generated from HEK293F culture. Confocal microscopy and the In Vivo Imaging System demonstrated that mAb-EV could penetrate the blood–brain barrier, target intracranial glioblastoma xenografts, and deliver drug intracellularly. The in vitro cytotoxicity study showed IC50 values of 2–12 nM of Ver-A. The hematoxylin and eosin staining of major organs in the tolerated dose study indicated minimal systemic toxicity of mAb-EV-Ver-A. Finally, the in vivo anti-tumor efficacy study in intracranial xenograft models demonstrated that EGFR mAb-EV-Ver-A effectively inhibited glioblastoma growth, but the combination with VEGF mAb did not improve the therapeutic efficacy. This study suggested that mAb-EV is an effective drug delivery vehicle and natural Ver-A has great potential to treat glioblastoma.
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