作为TLR9激动剂的DNA纳米结构的理性设计
Chunfa Chen1, Cheng Tian1, Zhuoer Jin1
1College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China.
Biomacromolecules
|October 8, 2025
概括
DNA纳米结构为设计用于免疫治疗的托尔类受体9 (TLR9) 激动剂提供了一种新的方法. 优化连接体定向和结构寡合化增强TLR9的激活,为改进的癌症和疫苗疗法铺平了道路.
科学领域:
- 免疫学 免疫学 免疫学
- 纳米技术 纳米技术
- 药物开发 药物开发
背景情况:
- 托尔类受体9 (TLR9) 激动剂在疫苗开发和癌症免疫疗法方面表现有前途.
- 合成CpG寡氧核酸 (ODN) 由于毒性和代谢不稳定性而面临限制.
- DNA纳米技术为精确控制TLR9激动因子相互作用提供了机会.
研究的目的:
- 为了合理设计基于DNA纳米结构的TLR9激动剂.
- 为了优化5'-TCG配体的空间定向,以增强TLR9激活.
- 研究DNA纳米结构配置和寡合化在调节TLR9信号传递中的作用.
主要方法:
- 具有特定的5'-TCG带方向的DNA纳米结构的合理设计.
- 利用TLR9受体晶体结构的洞察力来定位连接体.
- 根据不同的DNA纳米结构配置和寡合化状态评估TLR9激活.
主要成果:
- 优化了DNA纳米结构上的5'-TCG配体的空间定向,使得可以控制TLR9的激活.
- DNA纳米结构的结构灵活性是调节TLR9活动的关键因素.
- DNA纳米结构的寡合化显著提高了TLR9刺激效率.
结论:
- DNA纳米结构为开发下一代TLR9激动剂提供了一个多功能平台.
- 结构设计原则,包括连接体定向和寡合化,对于强大的TLR9激活至关重要.
- 这项工作为基于DNA的免疫治疗剂的合理设计建立了一个范例.
相关概念视频
RNA Structure
Overview
The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. 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): messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three RNA types consist of a...
The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. 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): messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three RNA types consist of a...
Types of RNA
Overview
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
CRISPR
Genome editing technologies allow scientists to modify an organism’s DNA via the addition, removal, or rearrangement of genetic material at specific genomic locations. These types of techniques could potentially be used to cure genetic disorders such as hemophilia and sickle cell anemia. One popular and widely used DNA-editing research tool that could lead to safe and effective cures for genetic disorders is the CRISPR-Cas9 system. CRISPR-Cas9 stands for Clustered Regularly Interspaced Short...
RNA Structure
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...
Nucleic Acid Structure
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 has a double-helix structure. The...
DNA Structure
DNA has a double-helix structure. The...


