作为区分细菌性和间歇性囊炎的潜在工具,miRNA表达特征
Dominika Peskar1, Nika Kojc2, Andreja Erman1
1Institute of Cell Biology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia.
Frontiers in immunology
|March 4, 2026
概括
这项研究确定了微RNAs (miRNAs),使小鼠的间歇性囊炎 (IC) 与细菌性囊炎 (BC) 有区别. MiR-301a-3p可以作为区分这些膀炎症类型的生物标志物.
科学领域:
- 泌尿器科 泌尿器科 泌尿器科 泌尿器科
- 分子生物学分子生物学
- 免疫学 免疫学 免疫学
背景情况:
- 间歇性囊炎 (IC) 是一种慢性膀炎,原因不明,机制不明,症状与细菌性囊炎 (BC) 相似.
- 关于调节性微RNAs (miRNAs) 在IC.病变发生过程中的作用的数据有限.
- 调查miRNA表达差异可以帮助区分IC和BC,并阐明IC机制.
研究的目的:
- 在IC和BC的小鼠模型之间识别差异表达的miRNA.
- 寻找潜在的miRNA生物标志物,可以区分IC和BC.
- 评估小鼠模型对研究人类IC病变的实用性.
主要方法:
- 用于慢性无菌囊炎 (cyclophosphamide) 和急性细菌囊炎 (大肠杆菌) 的小鼠模型.
- 基于人类IC数据集的选择和验证的调节性miRNA,使用小鼠膀组织的定量PCR.
- 进行了miRNA目标mRNA的丰富分析,以推断不同的炎症机制.
主要成果:
- 与对照组相比,在IC和BC中观察到20个选定的33个miRNA中的20个的差异表达.
- 鉴定了11个具有老鼠和人类IC之间一致表达趋势的miRNAs.
- 在IC和BC模型之间发现了膀组织的显著差异,确定miR-301a-3p作为潜在的歧视性标记物和NKRF作为目标基因.
结论:
- 密RNA表达,验证的标和信号通路在IC和BC之间有所不同,可能取决于炎症类型.
- 鼠标IC模型与人类IC有相似之处,验证了其用于识别像miR-301a-3p.p.这样的歧视性生物标志物的使用.
- 该研究表明IC的潜在治疗点,包括NKRF和NF-κB通路.
相关概念视频
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...
RNA Interference
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
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This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
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...
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PIWI-interacting RNAs, or piRNAs, are the most abundant short non-coding RNAs. More than 20,000 genes have been found in humans that code for piRNAs while only 2000 genes have been found for miRNAs. piRNAs can act at the transcriptional and post-transcriptional levels and have a vital role in silencing transposable elements present in germ cells. They are also involved in epigenetic silencing and activation. Previously, they were thought to function only in germ cells but new evidence suggests...
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...


