线粒体关联的内分泌物网膜 (MAM) 关联的calpains系统在产前
Cui Zhang1, Jingjing Jiang1, Hongfang Kong2
1Department of Obstetrics, Hebei General Hospital, Hebei Medical University, Shijiazhuang, China.
BMC pregnancy and childbirth
|October 26, 2025
概括
孕前 (PE) 涉及胎盘功能障碍和改变的线粒体相关膜 (MAMs). 卡尔帕因-卡尔帕斯塔丁系统,特别是卡尔帕因-2,显示PE的失调,可能将MAM变化与疾病严重程度联系起来.
科学领域:
- 产科和妇科 产科和妇科
- 细胞生物学 细胞生物学
- 生物化学 生物化学
背景情况:
- 孕前 (PE) 是一种妊娠并发症,其特征是高血压和蛋白尿,原因不明,通常与胎盘功能障碍和内皮损伤有关.
- 线粒体相关的细胞内网膜 (MAM) 对于细胞平衡至关重要,它们的功能障碍和细胞内网膜 (ER) 压力与PE有关.
- 关于MAMs在PE病变发生过程中的特定作用和机制的研究有限.
研究的目的:
- 调查MAM相关生物标志物在孕前 (PE) 中的作用.
- 在早期发病的PE (EOPE),晚期发病的PE (LOPE) 和健康对照中分析胎盘形态和MAM结构.
- 用生物信息学和分子技术识别和验证PE中MAM相关的基因和生物标志物.
主要方法:
- 使用HE染色和电子显微镜对31名EOPE,30名LOPE和54名对照女性的胎盘组织进行比较分析.
- 包括WGCNA和机器学习在内的GEO数据集 (GSE190971,GSE24129) 的生物信息学分析,以识别与MAM相关的基因 (MAM-RGs) 和生物标志物.
- 使用RT-qPCR,免疫光学和西式涂抹方法验证候选生物标志物表达 (CAST,calpain-1,calpain-2,calpastatin).
主要成果:
- 与LOPE和对照组相比,EOPE病例显示出更高的异常妊娠史,胎儿生长限制和缩/腹缩比率变化.
- 这两种PE亚型都显示出胎盘小的减少,EOPE显示出MAM中更严重的超结构变化.
- 生物信息学发现CAST是一种潜在的生物标志物,在PE中受到显著的下调. 在两种PE类型中,calpain-2都降低了,而calpain-1和calpastatin在EOPE和LOPE之间表达了差异.
结论:
- 早期产前 (EOPE) 与胎盘功能障碍和增加MAM接触有关.
- 卡尔帕因-卡尔帕斯塔丁系统与PE胎盘功能障碍有关,在EOPE和LOPE中观察到不同的卡尔帕因-1和卡尔帕因-2失调模式.
- 在MAMs中的结构异常可能与calpain系统调节失调有关,calpain-2水平可能与PE严重程度相关.
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