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Updated: Jun 14, 2025

Porous Silicon Microparticles for Delivery of siRNA Therapeutics

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Published on: January 15, 2015

设计,合成和评估Oleyl-WRH用于siRNA传递的

Mrigank Shekhar Rai¹, Muhammad Imran Sajid^1,2, Jonathan Moreno¹

¹Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Harry and Diane Rinker Health Science Campus, Chapman University School of Pharmacy, Irvine, CA 92618, USA.

Pharmaceuticals (Basel, Switzerland)

|August 29, 2024

概括

细胞透的烯酸化增强了癌细胞中STAT3基因沉默的siRNA传递. 这种新的方法提高了治疗效率和细胞吸收,为癌症治疗提供了一个有前途的策略.

科学领域:

生物技术是生物技术.
纳米医学是一种纳米医学.
分子生物学分子生物学

背景情况:

通过细胞膜传递像siRNA这样的核酸疗法是开发有效治疗方法的一个主要障碍.
富含氨酸,氨酸和氨酸的细胞透 (CPP) 显示出增强siRNA传递的潜力.
STAT3基因是各种癌症的关键标,使其沉默成为一个重要的治疗目标.

研究的目的:

为了研究油基化在 (WRH) n CPPs上的有效性,以改善siRNA传递和STAT3基因沉默.
评估烯基结合的CPPs对细胞吸收,血清稳定性和癌症细胞系中非细胞毒性的影响.
确定乳腺和卵巢癌模型中有效的STAT3基因沉默的最佳合.

主要方法:

使用Fmoc/tBu固体相化学合成和表征油基结合 (WRH) n (n=1-4) .
/siRNA纳米复合物的形成和表征,评估大小,泽塔潜力和血清稳定性.
在MDA-MB-231和SK-OV-3细胞中通过共聚焦显微镜和流细胞计对细胞吸收的评估.
通过西方斑点分析评估STAT3基因沉默效率.

主要成果:

烯基结合 (WRH) n形成了稳定的纳米复合体,具有siRNA (直径<100 nm,在N/P40处具有13-18 mV的泽塔电位) 并表现出非细胞毒性.
/siRNA复合体在N/P比≥40时表现出优异的血清稳定性.
烯- ((WRH) 3和烯- ((WRH) 4) 分别实现了大约60%和75%的细胞siRNA吸收.
西方斑分析证实了有效的STAT3基因沉默,oleyl-(WRH) 4在MDA-MB-231中达到约75%的沉默,在SK-OV-3细胞中达到约45%.

结论:

烯酸乙化显著提高了基于 (WRH) n的CPPs的细胞吸收和基因沉默功效.
烯 (Oleyl-(WRH) 4是siRNA传递的有力候选者,在乳腺和卵巢癌细胞中显示出大量的STAT3基因沉默.
这一修改后的CPP战略为核酸治疗和癌症治疗提供了有前途的进展.

关键词:

在MDA-MB-231中使用.这是一种RNA干扰.在SK-OV-3中使用.在STAT-3中,我们可以使用STAT-3.西方涂抹是指西方涂抹.乙化乙化是一种在阿根廷,阿根廷人.乳腺癌乳腺癌乳腺癌细胞透的.这就是histidine.油酸油脂酸的使用方法 siRNA 是一个RNA.托芬三聚氨酸是什么

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