免疫细胞亚群中的MicroRNA基因动态在衰老和动脉样硬化疾病的发展过程中,在单细胞分解时
Ana Hernández de Sande1, Tanja Turunen1, Maria Bouvy-Liivrand1,2
1School of Medicine, University of Eastern Finland, 70200, Kuopio, North-Savo, Finland.
Genome medicine
|October 7, 2025
概括
单细胞RNA测序揭示了微RNA (miRNA) 基因表达如何在衰老和动脉样硬化期间在免疫细胞中发生变化. 这项研究为了解复杂疾病中的miRNA动态提供了新的资源.
科学领域:
- 基因组学就是基因组学.
- 分子生物学分子生物学
- 免疫学 免疫学 免疫学
背景情况:
- 管理衰老和疾病的监管网络尚未完全理解.
- 微RNAs (miRNAs) 是组织平衡的关键调节者,调节mRNA的稳定性和丰富性.
- 单细胞RNA测序 (scRNA-seq) 平台为高分辨率的miRNA基因分析提供了潜力.
研究的目的:
- 在细胞分辨率下开发和验证scRNA-seq方法来破译miRNA基因签名.
- 在衰老和疾病进展过程中研究miRNA表达动态.
- 创建一个开放访问资源,用于老化研究中的miRNA表达概况.
主要方法:
- 基于滴滴,空间和板块的scRNA-seq平台的基准测试用于miRNA分析.
- 关于Tabula Muris Senis老化小鼠数据集的注释,该数据集具有细胞类型特定的miRNA表达.
- 从动脉样硬化疾病模型中获取转录基因组和转录基因组概况.
主要成果:
- 为miRNA表达特征生成了一个开放访问的工作流和衰老配置文件资源.
- 衰老的免疫细胞显示老化和与炎症相关的miRNAs的表达变化 (例如,mmu-mir-146a,mmu-mir-101a).
- 脂肪组织中的动脉样硬化进展与髓状细胞区扩张和巨细胞中改变的miRNA表达相关 (例如,mmu-mir-511,mmu-mir-23b集群).
- 疾病中单细胞透导致上调的miRNAs (例如,mmu-mir-1938,mmu-mir-22),在古典单细胞中具有特定的特征.
结论:
- 免疫细胞中的MiRNA基因转录活性受到衰老和疾病的显著影响.
- 该研究确定了与炎症脂肪组织相关的转化体特征.
- 这项工作提供了在衰老和疾病背景下对miRNA调节的细胞分辨率理解.
相关概念视频
MicroRNAs
23.9K
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...
23.9K
MicroRNAs
3.8K
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...
3.8K
The Effect of Aging on Tissues
3.3K
Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
3.3K


