局部mRNA从制成的纳米复合材料的输送 凝和氧酸纳米颗粒
Lea Andrée1, Rik Oude Egberink2, Renée Heesakkers1
1Department of Dentistry─Regenerative Biomaterials, Radboud University Medical Center, Philips van Leydenlaan 25, 6525 EX Nijmegen, The Netherlands.
ACS applied materials & interfaces
|September 16, 2024
概括
研究人员开发了新的酸纳米颗粒用于局部信使核糖核酸 (mRNA) 输送,提高生物材料性能. 这些脂涂酸纳米颗粒 (LCPs) 对有针对性的治疗应用具有前景.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术纳米技术
- 分子生物学分子生物学
背景情况:
- 传递信使核糖核酸 (mRNA) 的局部传递是一种改善生物材料功能的新策略.
- 现有的研究主要集中在通过纳米颗粒的系统mRNA传递上,局部传递载体的选择有限.
- 目前的方法通常涉及将mRNA纳米粒子加载到传统的聚合物水凝中.
研究的目的:
- 研究酸纳米颗粒作为本地mRNA传递的载体.
- 探索这些纳米粒子用于增强生物材料水凝的使用.
- 评估一种新的脂涂酸纳米粒子 (LCP) 配方的疗效和生物相容性.
主要方法:
- mRNA被封装在涂有脂质的酸纳米颗粒 (LCP) 中,使用融合性电离性脂质.
- 纳米复合材料是使用不同比例的凝和酸纳米颗粒制备的.
- 开发的纳米复合材料与,脂和LCP mRNA配方相结合,用于局部传递评估.
主要成果:
- 酸纳米颗粒含量影响了纳米复合材料的粘弹性特性,但并没有影响它们的自我愈合能力.
- 当地mRNA释放和随后的蛋白质表达是在与生物材料相互作用的细胞中实现的.
- 与其他配方相比,基于LCP的配方表现出优越的细胞兼容性和对酸含量的敏感性降低.
结论:
- 酸纳米颗粒可以作为当地mRNA传递的有效载体,并作为生物材料中的强化剂.
- 开发的LCP配方为局部的mRNA基疗法提供了一个有希望的,细胞兼容的平台.
- 这项研究扩大了设计先进生物材料的工具包,以提供有针对性的核酸输送.
相关概念视频
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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...
Nuclear Export of mRNA
Before mRNAs are exported to the cytoplasm, it is crucial to check each mRNA for structural and functional integrity. Eukaryotic cells use several different mechanisms, collectively known as mRNA surveillance, to look for irregularities in mRNAs. Irregular or aberrant mRNA are rapidly degraded by various enzymes. If a defective mRNA escapes the surveillance, it would be translated into a protein which would either be non-functional or not function properly. One of the primary irregularities in...
Regulated mRNA Transport
In eukaryotes, transcription and translation are compartmentalized; an mRNA is first synthesized in the nucleus and then selectively transported to the cytoplasm for protein synthesis. Before transport, a pre-mRNA undergoes several steps of post-transcriptional modifications including splicing, 5' capping, and the addition of a poly-adenine tail. Various proteins bind to the pre-mRNA during these modifications. The mRNA transport takes place with the help of multiple proteins playing specific...
Nuclear Export of mRNA
Before mRNAs are exported to the cytoplasm, it is crucial to check each mRNA for structural and functional integrity. Eukaryotic cells use several different mechanisms, collectively known as mRNA surveillance, to look for irregularities in mRNAs. Irregular or aberrant mRNA are rapidly degraded by various enzymes. If a defective mRNA escapes the surveillance, it would be translated into a protein which would either be non-functional or not function properly. One of the primary irregularities in...
Regulated mRNA Transport
In eukaryotes, transcription and translation are compartmentalized; an mRNA is first synthesized in the nucleus and then selectively transported to the cytoplasm for protein synthesis. Before transport, a pre-mRNA undergoes several steps of post-transcriptional modifications including splicing, 5' capping, and the addition of a poly-adenine tail. Various proteins bind to the pre-mRNA during these modifications. The mRNA transport takes place with the help of multiple proteins playing specific...
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
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