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载 RVG 的纳米血小板用于 miR-375 和替莫唑胺的靶向递送来增强脑胶质瘤的治疗。

Nanoplatelets modified with RVG for targeted delivery of miR-375 and temozolomide to enhance gliomas therapy.

机构信息

School of Basic Medicine and Forensic Medicine, Henan University of Science & Technology, Luoyang, 471023, China.

Zhumadian Cental Hospital, Zhumadian, 463000, China.

出版信息

J Nanobiotechnology. 2024 Oct 15;22(1):623. doi: 10.1186/s12951-024-02895-6.

Abstract

Gliomas are one of the most frequent primary brain tumors and pose a serious threat to people's lives and health. Platelets, a crucial component of blood, have been applied as drug delivery carriers for disease diagnosis and treatment. In this study, we designed engineered nanoplatelets for targeted delivery of therapeutic miR-375 and temozolomide (TMZ, a first-line glioma treatment agent) to enhance glioma therapy. Nanoplatelets were prepared through mild ultrasound, TMZ and miR-375 were co-loaded through ultrasound and electrostatic interactions, respectively, to combine chemotherapy with gene therapy against glioma. To improve the blood brain barrier (BBB) crossing efficiency and glioma targeting ability, the nanoplatelets were modified with central nervous system-specific rabies viral glycoprotein peptide (RVG) through thiol-maleimide click reaction. The RVG modified nanoplatelets co-loaded TMZ and miR-375 (NR/TMZ/miR-375) not only inherited the good stability and remarkable biocompatibility of platelets, but also promoted the cellular uptake and penetration of glioma tissues, and effectively induced cell apoptosis to enhance the therapeutic effect of drugs. In vivo studies showed that NR/TMZ/miR-375 significantly increased the circulation time of TMZ, and exhibited superior combined antitumor effects. In summary, this multifunctional 'natural' nanodrug delivery system provides a potent, scalable, and safety approach for platelet-based combined cancer chemotherapy and gene therapy.

摘要

神经胶质瘤是最常见的原发性脑肿瘤之一,严重威胁着人们的生命和健康。血小板作为血液的重要组成部分,已被应用于疾病诊断和治疗的药物递送载体。在这项研究中,我们设计了工程化的纳米血小板,用于靶向递送电针对 miR-375 和替莫唑胺(TMZ,一种一线治疗神经胶质瘤的药物),以增强神经胶质瘤的治疗效果。纳米血小板是通过温和的超声制备的,TMZ 和 miR-375 分别通过超声和静电相互作用共载,将化疗与针对神经胶质瘤的基因治疗相结合。为了提高血脑屏障(BBB)穿透效率和神经胶质瘤靶向能力,纳米血小板通过硫醇-马来酰亚胺点击反应与中枢神经系统特异性狂犬病病毒糖蛋白肽(RVG)进行修饰。RVG 修饰的共载有 TMZ 和 miR-375 的纳米血小板(NR/TMZ/miR-375)不仅继承了血小板的良好稳定性和显著的生物相容性,还促进了神经胶质瘤组织的细胞摄取和穿透,并有效诱导细胞凋亡,增强了药物的治疗效果。体内研究表明,NR/TMZ/miR-375 显著延长了 TMZ 的循环时间,并表现出优异的联合抗肿瘤效果。综上所述,这种多功能“天然”纳米药物递送系统为基于血小板的联合癌症化疗和基因治疗提供了一种有效、可扩展且安全的方法。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b157/11476726/1920c98c2808/12951_2024_2895_Fig1_HTML.jpg

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