孕产妇的高血糖血症通过抑制母胎界面的血管生成来诱导胎儿生长限制
Sujuan Li1,2,3,4, Yichi Wu1,2,3,4, Yuan Gao1,2,3,4
1Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, People's Republic of China.
母体高同氨酸 (HHcy) 损害了胎儿的生长,因为它破坏了乳腺血管生成. 这项研究揭示了HHcy上调CD36,导致脂质调节失调和降低血管内皮生长因子A (VEGFA) 降落层细胞,导致胎儿生长限制 (FGR).
科学领域:
- 生殖生物学 生殖生物学
- 孕产妇和胎儿医学 孕产妇和胎儿医学
- 代谢研究研究 代谢研究
背景情况:
- 孕产妇的高血糖血 (HHcy) 与胎儿生长限制 (FGR) 有关.
- 连接HHcy与FGR的机制,特别是在母胎界面,尚未完全理解.
- 断层血管生成对于健康的胎儿发育至关重要.
研究的目的:
- 调查母体HHcy损害叶血管生成并导致FGR的机制.
- 为了确定参与HHcy诱导的胎盘功能障碍的关键分子参与者.
- 探索与HHcy相关的FGR的潜在治疗点.
主要方法:
- 使用高甲胺饮食建立了HHcy的老鼠模型.
- 通过胎儿体重分析评估胎儿生长.
- 进行了母胎界面的组织学评估.
- 用于RNA测序和分子分析的分离初级果叶 stromal 细胞 (DSCs).
- 利用了CD36.6的药理抑制.
主要成果:
- HHcy导致 decidua 和胎盘中的血管密度降低.
- 通过抑制血管内皮生长因子A (VEGFA) 的分泌,HHcy损害了DSC的益血管性能力.
- 转录组分析显示,在暴露于HHcy的决定体中,脂质代谢途径的丰富.
- CD36被确定为HHcy诱导的脂质失调和激活氧酶增殖器激活受体 (PPAR) 途径的关键调解者.
- 抑制CD36恢复了VEGFA分泌,并挽救了DSCs介导的血管生成.
结论:
- 孕产妇的HHcy在DSC上调节CD36,导致脂质代谢障碍.
- 这些干扰通过PPAR途径损害了VEGFA介导的血管生成,导致FGR.
- 脂质代谢被认为是降落性血管生成的关键调节者,为FGR提供了新的见解和潜在的治疗点.
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