乙烯糖醇单甲基改性老鼠精子 具有关键发育作用的小RNA
bioRxiv : the preprint server for biology
|January 9, 2026
概括
乙烯基醇单甲基以太 (EGME) 暴露会改变雄性大鼠的精子小非编码RNA (sncRNAs). 这些 sncRNAs,包括miRNAs,piRNAs和tsRNAs的变化可能解释EGME对胚胎发育的负面影响.
科学领域:
- 生殖毒理学 生殖毒理学
- 发展生物学 发展生物学
- 分子生物学分子生物学
背景情况:
- 乙烯基醇单甲基乙烯 (EGME) 是一种已知的丸毒剂,影响男性生殖健康.
- 之前的研究表明,EGME暴露会降低精子运动性,并改变精子小RNA配置文件.
- 精子中的小非编码RNAs (sncRNAs) 参与调节胚胎发育.
研究的目的:
- 研究EGME暴露对雄性大鼠个人精子sncRNA水平的特定影响.
- 在EGME治疗后,在精子中识别差异表达的sncRNA及其潜在标.
- 阐明父亲EGME诱导对胚胎发育的影响的潜在机制.
主要方法:
- 雄性大鼠接触到不同剂量的EGME.
- 进行了精子sncRNA测序,以分析RNA表达特征.
- 进行了差异表达分析,以确定受EGME影响的特定miRNA,piRNA和tsRNA.
- 生物信息分析用于预测差异表达的miRNA和它们相关的基因本体学 (GO) 术语的目标.
主要成果:
- 暴露于EGME导致精子微RNA (miRNA),piRNA和tRNA衍生小RNA (tsRNA) 的剂量依赖性增加.
- 在所有测试的EGME剂量中,12个特定的miRNA显示单调,剂量依赖的差异表达.
- 这些miRNAs的预测目标参与了重要的早期胚胎发育过程,包括细胞命运承诺和生长调节.
结论:
- 暴露于EGME可重复性地以剂量依赖的方式改变精子sncRNA水平.
- 精子sncRNAs,特别是miRNAs中发现的变化提供了对影响胚胎发育的父性EGME毒性的假定机制.
- 需要进一步的研究来证实这些发现及其对生殖健康的影响.
相关概念视频
siRNA - 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...
Experimental 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...


