V2EX microrna

Microrna

释义 Definition

microRNA(miRNA):一种长度很短的非编码RNA(通常约 2024 个核苷酸),主要通过与靶mRNA结合来抑制基因表达(例如阻止翻译或促进mRNA降解)。在发育、细胞分化、疾病(如癌症)等过程中很重要。

发音 Pronunciation (IPA)

/makro r n e/

例句 Examples

MicroRNA can regulate gene expression in cells.
微小RNA可以在细胞中调控基因表达。

Researchers found that changes in microRNA levels are associated with cancer progression and treatment response.
研究人员发现,微小RNA水平的变化与癌症进展及治疗反应有关。

词源 Etymology

“microRNA”由 micro-(微小的) + RNA(ribonucleic acid,核糖核酸)构成,用来强调这类RNA分子体积/长度很短,且不同于编码蛋白质的mRNA,它主要承担调控功能。该术语在21世纪初随相关生物学发现而广泛使用。

相关词 Related Words

文学作品与知名出处 Literary Works & Notable Mentions

  • Nature(多篇研究论文与综述中频繁出现 microRNA/miRNA 相关表述)
  • Science(关于miRNA发现与功能机制的研究报道中常见)
  • Cell(细胞与分子生物学领域的miRNA机制与疾病研究中常见)
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