构建一个镜像RNA纳米结构,以提高生物稳定性和药物输送效率
Ying Zhang1, Yuliya Dantsu1, Wen Zhang1,2
1Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, 635 Barnhill Drive, Indianapolis, Indiana 46202, United States.
ACS biomaterials science & engineering
|March 4, 2025
概括
镜像RNA (l-RNA) 纳米结构为癌症治疗提供了增强的稳定性和降低的毒性. 这种创新方法使得多克索鲁比和MCL1siRNA的有针对性的配送成为可能,改善了治疗结果,增加了生物安全性.
科学领域:
- 生物技术是生物技术.
- 纳米医学是一种纳米医学.
- 在RNA治疗方面,RNA疗法.
背景情况:
- 开发稳定高效的药物输送系统对于有效的癌症治疗至关重要.
- 自然的d-RNA纳米结构面临着生物稳定性和目标外毒性方面的挑战.
- 多种治疗剂的有针对性的输送可以增强协同效应.
研究的目的:
- 设计一个镜像RNA (l-RNA) 纳米结构,以提高生物稳定性和药物递送效率.
- 调查l-RNA纳米结构在癌症治疗中为配送多克索鲁比辛和MCL1siRNA的潜力.
- 评估开发的纳米结构的生物安全性和目标交付能力.
主要方法:
- 设计了一个l-RNA三向结合纳米结构.
- 结合了纳米结构与多克索鲁比辛和MCL1siRNA进行代码交付.
- 用叶酸 (FA) 功能化纳米结构表面,用于有针对性的输送.
- 评估了稳定性,健康细胞中的毒性和癌细胞中的疗效.
- 利用结构建模来分析药物结合形状.
主要成果:
- 与天然的d-RNA相比,l-RNA纳米结构表现出更高的稳定性.
- 通过l-RNA纳米结构对多克索鲁比和MCL1siRNA的配合输送显示了改善的治疗结果.
- 在健康细胞中观察到毒性降低,表明生物安全性提高.
- 叶酸结合显著改善了输送特异性和内体细胞逃逸.
- 结构建模揭示了多克索鲁比与l-DNA的明显结合.
结论:
- l-RNA纳米结构代表了开发稳定和高效的组合药物递送系统的有希望的平台.
- 这种方法为癌症治疗药物提供了增强的生物安全性和有针对性的交付.
- 镜像核酸纳米结构具有促进癌症治疗策略的潜力.
相关概念视频
Nucleic Acid Structure
5.9K
The pentose sugar in DNA is deoxyribose, while in RNA the pentose sugar is ribose. The difference between the sugars is the presence of the hydroxyl group on the ribose's second carbon and a hydrogen on the deoxyribose's second carbon. The phosphate residue attaches to the hydroxyl group of the 5′ carbon of one sugar and the hydroxyl group of the 3′ carbon of the sugar of the next nucleotide, which forms a 5′ to 3′ phosphodiester linkage.
DNA Structure
DNA...
DNA Structure
DNA...
5.9K
RNA Stability
33.2K
Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
33.2K
Experimental RNAi
6.0K
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...
6.0K
RNA Structure
4.6K
The basic structure of RNA consists of a string of ribonucleotides attached by phosphodiester bonds. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA) involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three...
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA) involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three...
4.6K
Nucleic Acids
43.3K
Nucleic acids are the most important macromolecules for the continuity of life. They carry the cell's genetic blueprint and carry instructions for its functioning.
DNA and RNA
The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. In prokaryotes,...
DNA and RNA
The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. In prokaryotes,...
43.3K
RNA Interference
25.9K
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...
25.9K


