[精子血miR-26a-5p通过准和调节PTEN基因影响精子DNA完整性]
Chun-Hui Liu1, Wen-Sheng Shan1, Zhi-Qiang Wang1
1Department of Andrology, Gansu Provincial Maternity and Child Health Care Hospital (Gansu Provincial Central Hospital), Lanzhou, Gansu 730050, China.
Zhonghua nan ke xue = National journal of andrology
|September 18, 2025
概括
精子血中的miR-26a-5p水平随着精子DNA碎片化指数 (DFI) 的增加而降低,而PTEN水平增加. 较低的miR-26a-5p和较高的PTEN表达表明精子DNA受损,有助于诊断.
科学领域:
- 生殖生物学 生殖生物学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 精子DNA碎片化指数 (DFI) 影响男性生育能力.
- 微RNA (miRNA) 参与调节与精子质量相关的基因表达.
- 识别与DFI相关的特定miRNA对于理解精子DNA完整性至关重要.
研究的目的:
- 识别与精子DNA碎片化相关的精子血中差异表达的miRNA.
- 研究已识别的miRNA的目标基因及其在精子DNA完整性中的作用.
- 分析这些生物标志物对异常DFI的诊断价值.
主要方法:
- 从161名受试者收集精液血,按DFI水平 (正常,中等,异常) 分类.
- 使用miRNA芯片分析检测差异性miRNA表达.
- 用生物信息学来预测目标基因和验证miRNA-基因相互作用.
- 与DFI值相关的miRNA和目标基因表达水平.
主要成果:
- 确定了11种差异表达的miRNAs;miR-26a-5p与精子DNA完整性的降低显著相关.
- 预测PTEN是miR-26a-5p的直接标基因.
- 在具有较高DFI的个体中,miR-26a-5p表达减少,PTEN表达增加.
- 对于DFI异常,miR-26a-5p和PTEN都显示出显著的诊断值 (AUC>0.74).
结论:
- miR-26a-5p负面调节PTEN表达,从而影响精子DNA完整性.
- 精子血miR-26a-5p和PTEN作为诊断和评估精子DNA损伤的有价值的生物标志物.
- 这一发现为无法解释的DFI异常提供了潜在的诊断和预后方法.
相关概念视频
Abnormal Proliferation
5.1K
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
5.1K
Spermatogenesis
122.0K
Spermatogenesis is the process by which haploid sperm cells are produced in the male testes. It starts with stem cells located close to the outer rim of seminiferous tubules. These spermatogonial stem cells divide asymmetrically to give rise to additional stem cells (meaning that these structures “self-renew”), as well as sperm progenitors, called spermatocytes. Importantly, this method of asymmetric mitotic division maintains a population of spermatogonial stem cells in the male...
122.0K


