少女在小青春期和青春期的miR-30b循环水平的变化
Helle Margit Albrechtsen1,2, Gülizar Saritas1,2,3, Sofia B Winge1,2
1Department of Growth and Reproduction, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark.
The Journal of clinical endocrinology and metabolism
|September 3, 2025
概括
循环中的microRNA- 30b- 5p (miR- 30b- 5p) 度和生物活性反映了女孩的下丘脑- 下垂体- 淋巴结核 (HPG) 轴活动. 微RNA-155-5p (miR-155-5p) 水平也跟随青春期的变化,这表明它在HPG轴调节中的作用.
科学领域:
- 内分泌学
- 分子生物学
- 生殖健康
背景情况:
- 青春期的时间由下丘脑 - 下垂体 - 阴茎轴 (HPG) 调节.
- 马科林环指蛋白3 (MKRN3) 抑制HPG轴,而微RNA-30b (miR-30b) 可能调节MKRN3.
- 微RNA-155 (miR-155) 针对CEBPB,参与HPG轴激活.
研究的目的:
- 在健康的女孩身上研究循环中的miR-30b-5p和miR-155-5p水平.
- 在小青春期和青春期分析这些微RNA水平.
主要方法:
- 包括18名女性婴儿和29名处于不同青春期的女孩在内的长度研究.
- 在小青春期,小青春期后,青春期前,周围和晚期采集的血清样本.
- 使用反转录-qPCR对miR-30b-5p和miR-155-5p进行量化.
主要成果:
- 在迷你青春期后,循环中的miR- 30b- 5p水平下降,酸化降低.
- 在晚期青春期,miR- 30b- 5p水平显著增加,酸化度更高,表明生物活性更高.
- 在晚年青春期,miR-155-5p水平也显著增加.
结论:
- 循环中的miR- 30b- 5p水平和生物活性与女孩的HPG轴活性相关.
- 在青春期,miR-155-5p水平表现出类似的模式.
- 这两种miRNA都表明它们在雌性HPG轴中具有潜在的调节作用.
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