Part II: Functional delivery of a neurotherapeutic gene to neural stem cells using minicircle DNA and nanoparticles: Translational advantages for regenerative neurology.

Part II: Functional delivery of a neurotherapeutic gene to neural stem cells using minicircle DNA and nanoparticles: Translational advantages for regenerative neurology.
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第二部分:使用小环 DNA 和纳米颗粒将神经治疗基因功能性递送至神经干细胞:再生神经病学的转化优势。

DOI:
10.1016/j.jconrel.2016.06.039
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发表时间:
2016
期刊:
official journal of the Controlled Release Society
影响因子:
--
通讯作者:
Fernandes AR
Fernandes AR
中科院分区:
--
文献类型:
--
作者:
Fernandes AR

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基于神经营养素的治疗和基于神经干细胞(NSC)的策略都已进入治疗神经系统疾病和损伤的临床试验。尤其是脑源性神经营养因子(BDNF)可以在临床前研究中提供神经保护和神经再生的作用,补充神经干细胞的细胞替代益处。因此,通过基因工程神经干细胞将两种方法结合起来表达BDNF是实现复杂神经损伤联合治疗的一种有吸引力的方法。目前的基因工程方法几乎完全使用病毒载体将基因输送到神经干细胞,尽管安全性和可扩展性是临床翻译和适用性的主要问题。磁疗是一种非病毒的基因转移方法,它使用磁性纳米颗粒和DNA与磁场相结合,提供了一种安全的替代方法,但需要重大改进才能加强其临床应用,以输送大尺寸的治疗性质粒。在这里,我们首次证明了使用带有磁感应技术的微环来安全地工程神经干细胞过表达BDNF的可行性。高表达BDNF的原代小鼠神经干细胞在分化后产生更多的子代神经元细胞,并在四周内加速成熟。基于我们的发现,我们强调了微环/磁疗技术在治疗关键神经营养剂输送方面的临床潜力。
Both neurotrophin-based therapy and neural stem cell (NSC)-based strategies have progressed to clinical trials for treatment of neurological diseases and injuries. Brain-derived neurotrophic factor (BDNF) in particular can confer neuroprotective and neuro-regenerative effects in preclinical studies, complementing the cell replacement benefits of NSCs. Therefore, combining both approaches by genetically-engineering NSCs to express BDNF is an attractive approach to achieve combinatorial therapy for complex neural injuries. Current genetic engineering approaches almost exclusively employ viral vectors for gene delivery to NSCs though safety and scalability pose major concerns for clinical translation and applicability. Magnetofection, a non-viral gene transfer approach deploying magnetic nanoparticles and DNA with magnetic fields offers a safe alternative but significant improvements are required to enhance its clinical application for delivery of large sized therapeutic plasmids. Here, we demonstrate for the first time the feasibility of using minicircles with magnetofection technology to safely engineer NSCs to overexpress BDNF. Primary mouse NSCs overexpressing BDNF generated increased daughter neuronal cell numbers post-differentiation, with accelerated maturation over a four-week period. Based on our findings we highlight the clinical potential of minicircle/magnetofection technology for therapeutic delivery of key neurotrophic agents.
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影响因子: 5.5
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