胎盘离子通道基因表达变化在预先分娩高海拔怀孕中
Colleen G Julian1,2, Julie A Houck1,2,3, Sahand Fallahi3
1Department of Biomedical Informatics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States.
Physiological genomics
|July 17, 2023
概括
居住在高海拔地区会增加孕前的风险. 这项研究发现,在高海拔地区的孕前妇女中,胎盘离子通道基因表达发生改变,与祖先有关,这表明它在疾病发展中发挥了作用.
科学领域:
- 生殖生物学和遗传学 生殖生物学和遗传学
- 高海拔适应和健康 高海拔适应和健康
- 孕产妇和胎儿的医学
背景情况:
- 高海拔居住 (>2,500米) 增加了妊娠血管疾病的风险,包括与胎盘功能障碍相关的先兆子和胎儿生长限制.
- 高地祖先的遗传因素在高海拔地区提供了对这些疾病的保护.
- 胎盘离子通道在高海拔怀孕和产前的作用在很大程度上仍未确定.
研究的目的:
- 调查来自高海拔前症病例和正常血压对照者的胎盘中26个离子通道基因的表达.
- 为了将胎盘离子通道基因转录与母婴遗传祖先相关联.
- 为了确定关键的离子通道蛋白在高海拔胎盘内的定位.
主要方法:
- 量化PCR (qPCR) 用于测量来自玻利维亚拉巴斯 (3850米) 的胎盘组织中26个离子通道基因的表达.
- 用ADMIXTURE分析来评估遗传祖先的比例.
- 免疫光染在胎盘细胞内的局部离子通道蛋白质表达.
主要成果:
- 与对照人群相比,11个离子通道基因在胎盘下调和2个胎盘上调.
- KCNE1的表达与高海拔美洲印第安人的祖先正相关,与非高海拔祖先负相关.
- SCNN1G表达与非洲血统有负相关性. 关键的离子通道局部存在于同胞性细胞,微膜,胆板和胎儿血管中.
结论:
- 胎盘离子通道的差异表达与高海拔孕前的病理生理学有关.
- 遗传血统影响了高海拔胎盘中特定离子通道的表达.
- 需要进一步的功能性研究来探索在产前症中调节离子通道活性的治疗潜力.
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