Designing multifunctional cancer-targeted nanosystem for magnetic resonance molecular imaging-guided theranostics of lung cancer.

Designing multifunctional cancer-targeted nanosystem for magnetic resonance molecular imaging-guided theranostics of lung cancer.
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设计用于磁共振分子成像引导肺癌治疗诊断的多功能癌症靶向纳米系统

DOI:
10.1080/10717544.2018.1494224
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发表时间:
2018-11
期刊:
影响因子:
6
通讯作者:
Luo L
Luo L
中科院分区:
医学2区
文献类型:
--
作者:
Gao P;Mei C;He L;Xiao Z;Chan L;Zhang D;Shi C;Chen T;Luo L

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诊疗结合是提高癌症患者治疗效果的有效途径,受到研究者的广泛关注。为此,我们设计并合成了一种多功能载药纳米系统(F/A-PLGA@DOX/SPIO),以减少传统化疗药物的副作用,实现肿瘤的同时诊断和治疗。叶酸(FA)和可激活细胞穿透肽(ACPP)的表面修饰使纳米系统具有良好的癌症靶向能力,从而降低了对正常器官的毒性。此外,F/A-PLGA@DOX/SPIO纳米系统可以作为一种优秀的磁共振成像(MRI)T2负性对比剂。更重要的是,根据体外实验,F/A-PLGA@DOX/SPIO纳米系统可以促进A549肺癌细胞内活性氧(ROS)的过量产生,诱导细胞凋亡,大大增强抗肿瘤作用。此外,借助MRI技术,可以实现F/A-PLGA@DOX/SPIO纳米系统在肿瘤内的靶向成像和药物疗效的动态监测。因此,本研究提供了一种多功能载药F/A-PLGA@DOX/SPIO靶向纳米系统,用于磁共振分子成像引导的治疗,在肿瘤诊断和治疗中具有良好的应用前景。
The integration of diagnosis and therapy is an effective way to improve therapeutic effects for cancer patients, which has acquired widely attentions from researchers. Herein, a multifunctional drug-loaded nanosystem (F/A-PLGA@DOX/SPIO) has been designed and synthesized to reduce the side effects of traditional chemotherapy drugs and realize simultaneous tumor diagnosis and treatment. The surface modification of folic acid (FA) and activatable cell-penetrating peptide (ACPP) endows the nanosystem with excellent cancer targeting capabilities, thus reducing toxicity to normal organs. Besides, the F/A-PLGA@DOX/SPIO nanosystem can serve as an excellent magnetic resonance imaging (MRI) T2-negative contrast agent. More importantly, according to in vitro experiments, the F/A-PLGA@DOX/SPIO nanosystem can promote the overproduction of reactive oxygen species (ROS) within A549 lung cancer cells, inducing cell apoptosis, greatly enhancing the antineoplastic effect. Furthermore, with the help of MRI technology, the targeting imaging of the F/A-PLGA@DOX/SPIO nanosystem within tumors and the dynamic monitoring of medicine efficacy can be realized. Therefore, this study provided a multifunctional drug-loaded F/A-PLGA@DOX/SPIO targeted nanosystem for magnetic resonance molecular imaging-guided theranostics, which has excellent potential for the application in tumor diagnosis and therapy.
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