生物模拟微RNA--纳米复合物用于向和联合高脂血症治疗
Tong Li1, Libing Liu1, Kongdi Zhu1
1Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing, 100083, China.
Advanced healthcare materials
|March 8, 2024
概括
这项研究开发了一种用于治疗高脂血症的新型纳米粒子输送系统. 该系统通过同时提供microRNA-148a-3p抑制剂和来有效降低胆固醇,从而提高治疗结果.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术 纳米技术
- 药理学 药理学是指药理学的学科.
背景情况:
- 超脂血是冠状动脉心脏病的重要危险因素.
- 微RNA-148a-3p (miR-148a-3p) 抑制剂向低密度脂蛋白胆固醇受体 (LDLR),但由于体内循环短,临床翻译面临挑战.
- 需要对高脂血症采取有效的治疗策略.
研究的目的:
- 设计和评估一种新的纳米粒子输送系统,用于增强超脂血症治疗.
- 为了研究miR-148a-3p抑制剂和的协同治疗效果的同时递送.
- 改善基于核酸的治疗方法的体内循环时间和向效率.
主要方法:
- 一个用素 (CS) 修改的血小板膜 (PM) 覆盖的纳米粒子 (SeNP) 输送系统被设计成封装miR-148a-3p抑制剂 (PM/CS-SeNPs/miR).
- 纳米粒子的粒子大小和结构的特征.
- PM/CS-SeNPs/miR系统的治疗疗效,循环时间,准能力和毒性在体内进行了评估.
主要成果:
- PM/CS-SeNPs/miR纳米粒子表现出一个统一的外核心结构,粒子大小约为90纳米.
- 同时提供miR-148a-3p抑制剂和,通过分别准LDLR通路和Toll-Like受体4 (TLR-4) /NF-κB信号通路,有效地缓解了超脂血症.
- 血小板膜涂层显著延长了体内循环时间至48小时,并使得肝脏能够快速向,没有观察到毒性.
结论:
- 开发的PM/CS-SeNPs/miR纳米粒子系统为精确的超脂血症治疗提供了高性能策略.
- 使用miRNA抑制剂和通过纳米颗粒输送的的双重组合疗法为管理高脂血症提供了有前途的方法.
- 这种有针对性的输送系统克服了传统核酸治疗的局限性,提高了治疗效率和安全性.
相关概念视频
01:22MicroRNAs
MicroRNA (miRNA) are short, regulatory RNA transcribed from introns—non-coding regions of a gene—or intergenic regions—stretches of DNA present between genes. Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA ends...
02:30siRNA - 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...
02:15Experimental 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...
01:22MicroRNAs
MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...