鲁II) 复杂介导相位分离放大光催化RNA损伤以刺激RIG-I免疫疗法
Xiao-Xiao Chen1, Xia Mu2, Zhi-Yuan Li1
1MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, Sun Yat-Sen University, Guangzhou 510006, P. R. China.
JACS Au
|October 2, 2025
概括
研究人员开发了一种新型的鲁 (Ru1) 复合物,可诱导RNA相分离. 这一发现为癌症治疗提供了一个新的策略,通过激活通过RNA光损伤的免疫反应来治疗癌症.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 化学生物学 化学生物学
背景情况:
- RNA相分离对于转录和翻译等细胞过程至关重要.
- RNA相分离的失调与包括癌症在内的疾病有关.
- 治疗应用需要RNA相分离的小分子诱导剂.
研究的目的:
- 设计和合成一种能够诱导RNA相分离的新型鲁 (Ru1) 复合物.
- 研究Ru1诱导的RNA相分离的机制及其对RNA中心免疫激活的影响.
- 评估Ru1在改善瘤免疫微环境方面的治疗潜力.
主要方法:
- 合成和描述Ru (Ru1) 复合物的Ru (II) 复合物.
- 在体外研究评估Ru1诱导双链RNA (dsRNA) 和单链RNA (ssRNA) 分相的能力.
- 分子动力学模拟以了解连接体替代剂在RNA结合和相分离中的作用.
- 在光激活后通过视网膜酸诱导基因I (RIG-I) 途径对Ru1介导的免疫激活的评估.
- 在体内研究评估Ru1对瘤免疫微环境的影响.
主要成果:
- 设计的Ru(II) 复合体 (Ru1) 在体外有效诱导dSRNA和ssRNA的相分离.
- 基替代物,特别是带正电荷的三和基团,对于Ru1的RNA相分离能力至关重要.
- 通过RIG-I通路,Ru1介导的相分离,随后的光激活触发了以RNA为中心的免疫反应.
- Ru1治疗显著增强瘤免疫微环境.
结论:
- (Ru1) 复合物是第一个据报道诱导RNA相分离的小分子.
- Ru1通过将相分离与光激活相结合,为RNA向癌症免疫治疗提供了一个新的平台.
- 这些发现表明Ru1是改善抗瘤免疫力的有前途的治疗剂.
相关概念视频
Experimental RNAi
7.3K
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...
7.3K
RNA Interference
27.8K
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...
27.8K
siRNA - Small Interfering RNAs
18.4K
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...
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...
18.4K
Regulation of the Unfolded Protein Response
2.9K
Inositol-requiring kinase one or IRE1 is the most conserved eukaryotic unfolded protein response (UPR) receptor. It is a type I transmembrane protein kinase receptor with a distinctive site-specific RNase activity. As the binding mechanics of the misfolded proteins with the N-terminal domain of IRE-1 are unclear, three binding models — direct, indirect, and allosteric -- are proposed for receptor activation. Nevertheless, it is known that once a misfolded protein associates with IRE1, it...
2.9K
piRNA - Piwi-interacting RNAs
7.5K
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...
7.5K


