脂质纳米粒子介导的Cd14siRNA传递改善了对皮内微电极植入的急性炎症反应

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Updated: Feb 2, 2026

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Francine Graham¹, Diarmuid W Hutchinson², Taylor J Moon²

¹Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA; Advanced Platform Technology Center, Louis Stokes Cleveland Veterans Affairs Medical Center, Cleveland, OH 44106.

Acta biomaterialia

|January 31, 2026

概括

我们开发了一种使用脂质纳米颗粒的基因疗法,以抑制巨细胞中的CD14,减少大脑植入物周围的炎症. 这种方法通过减轻对植入电极的免疫反应来增强神经接口的寿命.

科学领域:

生物医学工程生物医学工程
神经科学是一个神经科学.
免疫学免疫学免疫学

背景情况:

皮层内微电极 (IME) 对于脑计算机接口 (BCI) 至关重要,但由于炎症反应,它们往往会失败.
巨介导的炎症,特别是涉及分化14 (CD14) 集群的炎症,有助于IME失败.
现有的神经接口面临着长期稳定性和性能方面的挑战.

研究的目的:

通过抑制巨细胞上的CD14表达来缓解IME植入的炎症反应.
为了评估脂质纳米粒子 (LNP) 介导的siRNA输送用于CD14基因沉默的疗效.
在体内评估CD14抑制对免疫细胞透和神经炎症的影响.

主要方法:

使用载有Cd14特异性siRNA的NLP进行向基因传递.
在培养的小鼠巨细胞 (体外) 和带有IME植入物的小鼠模型 (体内) 中测试了LNP疗效.
通过流细胞计和转录学分析了炎症性细胞因子分泌,LNP生物分布,基因表达,免疫细胞透和炎症标记物.

主要成果:

实验室研究表明,LNP抑制了炎症性细胞因子分泌.
在体内研究表明,有效的LNP向植入部位的循环和透巨细胞.
在植入后24小时内,CD14基因沉默显著降低了免疫细胞透和脑膜膜炎症.

结论:

以LNP为媒介的基因疗法有效地抑制了IME植入相关的巨细胞中的CD14表达.
向抑制CD14可以降低对神经植入物的先天免疫反应.
这一策略有望改善大脑与计算机接口的寿命和性能.

关键词:

产生的免疫调节产生的免疫调节脂质纳米粒子脂质纳米粒子微电极是微电极的组成部分.神经炎症是一种神经炎症.

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