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NRP-1 targeted and cargo-loaded exosomes facilitate simultaneous imaging and therapy of glioma in vitro and in vivo
Biomaterials ( IF 12.8 ) Pub Date : 2018-06-21 , DOI: 10.1016/j.biomaterials.2018.06.029
Gang Jia , Yong Han , Yanli An , Yinan Ding , Chen He , Xihui Wang , Qiusha Tang

Currently, glioma treatment is limited by two main factors: timely detection at onset or relapse and restriction of drugs by the blood–brain barrier (BBB) from entering the brain and influencing tumor growth. However, a safe BBB-traversing drug delivery system has brought new hope to glioma treatment. Exosomes have strong cargo-loading capacity and have the ability to cross the BBB. They can also be conferred with the ability for targeted delivery. Therefore, exosomes have great promise to be a targeted drug delivery vehicles. In this study, we firstly loaded superparamagnetic iron oxide nanoparticles (SPIONs) and curcumin (Cur) into exosomes and then conjugated the exosome membrane with neuropilin-1-targeted peptide (RGERPPR, RGE) by click chemistry to obtain glioma-targeting exosomes with imaging and therapeutic functions. When administered to glioma cells and orthotopic glioma models, we found that these engineered exosomes could cross the BBB smoothly and provided good results for targeted imaging and therapy of glioma. Furthermore, SPION-mediated magnetic flow hyperthermia (MFH) and Cur-mediated therapy also showed a potent synergistic antitumor effect. Therefore, the diagnostic and therapeutic effects on glioma were significantly improved, while reducing the side effects. We have designed a new type of glioma-targeting exosomes, which can carry nanomaterials and chemical agents for simultaneous diagnosis and treatment of glioma, thus providing a potential approach for improving the diagnosis and treatment effects of intracranial tumors.



中文翻译:

NRP-1靶向且载有货物的外泌体有助于在体外和体内同时对神经胶质瘤进行成像和治疗

当前,神经胶质瘤的治疗受到两个主要因素的限制:在发病或复发时及时发现,以及血脑屏障(BBB)限制药物进入大脑并影响肿瘤的生长。但是,安全的BBB穿越药物输送系统为神经胶质瘤的治疗带来了新的希望。外泌体具有很强的载货能力,并具有穿越血脑屏障的能力。它们也可以被赋予针对性递送的能力。因此,囊泡有望成为靶向药物的载体。在这项研究中,我们首先将超顺磁性氧化铁纳米粒子(SPIONs)和姜黄素(Cur)加载到外泌体中,然后通过点击化学将外泌体膜与神经纤毛蛋白1靶向肽(RGERPPR,RGE)偶联,以获得具有成像功能的靶向神经胶质瘤的外泌体和治疗功能。当对神经胶质瘤细胞和原位神经胶质瘤模型给药时,我们发现这些工程改造的外泌体可以顺利穿过血脑屏障,并为神经胶质瘤的靶向成像和治疗提供了良好的结果。此外,SPION介导的磁流热疗(MFH)和Cur介导的疗法也显示出有效的协同抗肿瘤作用。因此,显着改善了对神经胶质瘤的诊断和治疗效果,同时减少了副作用。我们设计了一种新型的靶向神经胶质瘤的外泌体,可以携带纳米材料和化学试剂同时诊断和治疗神经胶质瘤,从而为提高颅内肿瘤的诊断和治疗效果提供了一种潜在的途径。我们发现,这些工程改造的外泌体可以顺利穿过血脑屏障,并为胶质瘤的靶向成像和治疗提供了良好的效果。此外,SPION介导的磁流热疗(MFH)和Cur介导的疗法也显示出有效的协同抗肿瘤作用。因此,显着改善了对神经胶质瘤的诊断和治疗效果,同时减少了副作用。我们设计了一种新型的靶向神经胶质瘤的外泌体,可以携带纳米材料和化学试剂同时诊断和治疗神经胶质瘤,从而为提高颅内肿瘤的诊断和治疗效果提供了一种潜在的途径。我们发现这些工程改造的外泌体可以顺利通过血脑屏障,并为胶质瘤的靶向成像和治疗提供了良好的效果。此外,SPION介导的磁流热疗(MFH)和Cur介导的疗法也显示出有效的协同抗肿瘤作用。因此,显着改善了对神经胶质瘤的诊断和治疗效果,同时减少了副作用。我们设计了一种新型的靶向神经胶质瘤的外泌体,可以携带纳米材料和化学试剂同时诊断和治疗神经胶质瘤,从而为提高颅内肿瘤的诊断和治疗效果提供了一种潜在的途径。因此,显着改善了对神经胶质瘤的诊断和治疗效果,同时减少了副作用。我们设计了一种新型的靶向神经胶质瘤的外泌体,可以携带纳米材料和化学试剂同时诊断和治疗神经胶质瘤,从而为提高颅内肿瘤的诊断和治疗效果提供了一种潜在的途径。因此,显着改善了对神经胶质瘤的诊断和治疗效果,同时减少了副作用。我们设计了一种新型的靶向神经胶质瘤的外泌体,可以携带纳米材料和化学试剂同时诊断和治疗神经胶质瘤,从而为提高颅内肿瘤的诊断和治疗效果提供了一种潜在的途径。

更新日期:2018-06-22
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