马精子中的特定微RNA是具有高功能性的潜在生物标志物
Nancy H Ing1, Kranti Konganti2, Noushin Ghaffar2
1Department of Animal Science, Texas A&M University, College Station, Texas, USA.
Reproduction in domestic animals = Zuchthygiene
|July 15, 2024
概括
研究人员在马精子中确定了特定的microRNA,发现了密集和不太密集的精子种群之间的差异. 这些微RNA可以作为精子功能和生育能力的生物标志物.
科学领域:
- 生殖生物学 生殖生物学
- 分子生物学分子生物学
- 基因组学就是基因组学.
背景情况:
- 男性不孕不育影响着各种物种,需要先进的诊断工具.
- 精子微RNAs (miRNAs) 提供了关于精子发育和功能的见解.
- 密度梯度离心法在临床上用于隔离用于人工授精的高质量精子.
研究的目的:
- 发现和量化马精子中的miRNAs.
- 在密集和不太密集的精子种群之间识别差异表达的miRNA.
- 探索这些miRNAs在精子成熟和功能中的潜在作用.
主要方法:
- 来自七只马的精子被用密度梯度离心法分为密度较高和较低的部分.
- 小RNA测序在14个RNA样本 (密集和不太密集的部分) 上进行.
- 生物信息分析用于识别和量化成熟的miRNA和前体.
主要成果:
- 在马精子中发现了287个成熟的miRNA.
- 与较密的精子相比,较不密的精子表现出较少的成熟miRNA和更多的前体miRNA.
- 在密集的精子中,有九种miRNA显著更为丰富,其中一些预计将准参与mRNA和蛋白质衰变的mRNA.
结论:
- 马的精子中含有不同的miRNA配置文件.
- 不同的miRNA表达表明在调节精子生成后过程中发挥了作用.
- 密集精子中丰富的特定miRNA可以作为增强功能能力和生育能力的潜在生物标志物.
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...
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...
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...