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在牛精子 (Bos taurus) 的形态功能条件下进行qPCR规范化的microRNAs

Lucas Petitemberte de Souza¹, Leandro Silva Nunes¹, Luana Carla Salvi¹

¹Laboratório de Genômica Estrutural, Programa de Pós-Graduação em Biotecnologia, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, Brasil.

Molecular reproduction and development

|August 6, 2025

概括

确定最好的微RNAs (miRNAs) 来规范牛精液中的定量聚合酶链反应 (qPCR) 对于准确的生育能力评估至关重要. 这项研究发现了适合分析精子运动性和形态学的特定miRNA,提高了牛养殖效率.

科学领域:

生殖生物学和畜牧科学.
分子生物学和基因表达分析.
定量遗传学和生物信息学.

背景情况:

牛的生育能力对于成功的畜牧业生产至关重要.
精子微RNAs (miRNAs) 调节精子功能,但它们的准确量化需要可靠的正常化.
目前的方法缺乏普遍接受的牛精液分析的参考miRNA.

研究的目的:

确定和验证稳定的微RNA (miRNA) 正常化剂,用于 Bos taurus 精液中的定量聚合酶连锁反应 (qPCR) 分析.
在不同的精液质量条件下 (运动性和形态) 评估候选参考miRNAs的表达稳定性.
为牛繁殖中准确的miRNA表达研究提供可靠的正常化剂.

主要方法:

选择候选参考小RNA,包括U6小核RNA和6个特定miRNA.
使用delta Ct,geNorm,NormFinder和BestKeeper算法对miRNA表达稳定性的分析.
使用RefFinder对单个和组合精液质量条件进行全面的稳定性评估.

主要成果:

miR-92a-3p在与精子运动性相关的正常化分析中表现出最高的稳定性.
在以形态为重点的分析中,Let-7c-5p被确定为最稳定的参考miRNA.
同时,Let-7c-5p也是同时分析样本的最佳正常化剂,而miR-26a-5p显示最不稳定.

结论:

这项研究提供了第一套经过验证的微RNA (miRNA) 规范剂,用于 Bos taurus 精液中的定量聚合酶链反应 (qPCR).
已识别的正常化剂 (移动性的miR-92a-3p,形态的Let-7c-5p) 允许在牛生殖研究中更准确地定量miRNA.
这些发现将增强对miRNA在牛生育中的作用的理解,并改善养殖计划的结果.

关键词:

这就是Bos Taurus.正常化的微RNAs.qPCRR 是一个很好的方法.精子精子精子精子稳定的稳定性稳定的稳定性

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相关概念视频

MicroRNAs

MicroRNAs

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...

MicroRNAs

MicroRNAs

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...