为循环RNA成像和精确的基因疗法点亮三维纳米灯
相关实验视频
Updated: Aug 18, 2026

06:59
Nanomanipulation of Single RNA Molecules by Optical Tweezers
Published on: August 20, 2014
14.7K
Shi Zheng1, Jinping Hu1, Zichen Jiao2
1School of Chemistry and Chemical Engineering, State Key Laboratory of Digital Medical Engineering, Southeast University, Nanjing, 211189, China.
Biosensors & bioelectronics
|February 19, 2025
概括
我们开发了一种新型的纳米灯探针,用于检测循环RNA (circRNA) 并实现向基因疗法. 这种先进的系统提供了高度敏感的circRNA检测和有效的瘤特异性基因沉默,毒性最小.
科学领域:
- 生物化学 生化学
- 分子生物学分子生物学
- 纳米技术 纳米技术
背景情况:
- 循环RNAs (circRNAs) 是基因表达的关键调节者.
- 现有的circRNA检测和治疗方法在灵敏度和特异性方面存在局限性.
研究的目的:
- 开发一种用于circRNA成像和基因治疗的新型三维纳米灯探针.
- 为了实现敏感的检测和针对性的基因沉默circRNAs.
主要方法:
- 构建一个集成的,多功能化的DNA纳米灯探头.
- 利用驱动的链位移用于纳米灯组装和siRNA释放.
- 使用纳米灯探针用于circCDYL检测和基因沉默.
主要成果:
- 实现了一步circCDYL检测,检测极限为28.2 aM.
- 在乳腺癌患者中证明了circCDYL的准确量化.
- 展示了瘤特异性基因沉默,具有最小的目标外毒性和增强的治疗效率.
结论:
- 纳米灯探针使高度敏感的circRNA检测和高效的向基因治疗成为可能.
- 这一策略在瘤诊断和精准医学方面具有重大潜力.
- 与线性探针相比,DNA纳米灯提供了更好的光稳定性和抗酶消化能力.
相关概念视频
Real Time RT-PCR
Real-time reverse transcription-polymerase chain reaction, or Real-time RT-PCR, is an analytical tool used to determine the expression level of target genes. The method involves converting mRNA to complementary DNA with the help of an enzyme known as reverse transcriptase, followed by the PCR amplification of the cDNA. These two processes can be performed simultaneously in a single tube or separately as a two-step reaction.
The real-time quantification of the number of amplified products is...
The real-time quantification of the number of amplified products is...
RNA-seq
RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases.
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while microarray-based...
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while microarray-based...
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...

