相关实验视频
Updated: Aug 10, 2026

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Porous Silicon Microparticles for Delivery of siRNA Therapeutics
Published on: January 15, 2015
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构建GPC3修改型脂聚合物SiRNA输送系统
Dandan Sun1, Xiaoyu Li2, Yaru Liu2
1College of Pharmacy, Yanbian University, Yanji 133000, Jilin Province, P.R. China.
Current pharmaceutical design
|April 22, 2024
概括
这项研究开发了一种新的GPC3修饰纳米粒子 (GLPS),用于向肝脏的siRNA输送和MRI监测. GLPS表现出卓越的生物相容性和肝脏向能力,为先进的基因治疗应用铺平了道路.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术纳米技术
- 基因治疗 基因治疗
背景情况:
- 基因疗法具有前景,但由于缺乏有效的载体而受到限制.
- 格利皮坎3 (GPC3) 是肝细胞癌 (HCC) 的特定点.
- 可视化的基因载体是监测治疗和提高转染效率所需的.
研究的目的:
- 为了准备一个GPC3修饰的脂质聚乙烯胺修饰的超偏磁纳米粒子 (GLPS) 供肝脏向的siRNA输送.
- 评估GLPS作为监测基因治疗效果的可视化载体.
- 评估GLPS的传染效率和肝脏向能力.
主要方法:
- 优化GLPS配方使用体外基因沉默,细胞毒性和凝电泳.
- 经过验证的肝脏向与体外MRI和普鲁士蓝色染色.
- 通过红细胞共同培养和HE染色评估生物相容性;通过血液分析和组织形态学评估体内安全性.
主要成果:
- 在LPS:siRNA质量比为25:1,LPS:DSPE-PEG-GPC3摩尔比为2:3的情况下确定最佳GLPS配方.
- GLPS显示出显著的肝脏向能力.
- GLPS显示出优异的生物相容性,没有血液溶解或红细胞形态变化;体内研究证实没有对血液或主要器官的不良影响.
结论:
- GLPS是一种有前途的可视化载体,用于针对肝脏的MRI监测.
- 在基因治疗中,GLPS促进了有效的siRNA输送.
- 这种新型载体系统增强了肝脏疾病的基因治疗潜力.
相关概念视频
RNA Interference
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
siRNA - Small Interfering RNAs
Small interfering RNAs, or siRNAs, are short regulatory RNA molecules that can silence genes post-transcriptionally, as well as the transcriptional level in some cases. siRNAs are important for protecting cells against viral infections and silencing transposable genetic elements.
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the ATP-dependent...
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the ATP-dependent...
piRNA - Piwi-interacting RNAs
PIWI-interacting RNAs, or piRNAs, are the most abundant short non-coding RNAs. More than 20,000 genes have been found in humans that code for piRNAs while only 2000 genes have been found for miRNAs. piRNAs can act at the transcriptional and post-transcriptional levels and have a vital role in silencing transposable elements present in germ cells. They are also involved in epigenetic silencing and activation. Previously, they were thought to function only in germ cells but new evidence suggests...
Experimental RNAi
RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...
Small interfering RNAs (siRNA)
Small interfering RNAs, or siRNAs, are short regulatory RNA molecules that can silence genes post-transcriptionally, as well as the transcriptional level in some cases. siRNAs are important for protecting cells against viral infections and silencing transposable genetic elements.
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the ATP-dependent...
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the ATP-dependent...

