一种阿里碳化合物受体连接体对人类热囊细胞细胞发育的影响
Vinay Shukla1,2, Khursheed Iqbal1,2, Hiroaki Okae3
1Institute for Reproductive and Developmental Sciences, University of Kansas Medical Center, Kansas City, KS, USA.
Human reproduction (Oxford, England)
|April 28, 2025
概括
在人体热囊细胞中,氨酸碳化合物受体 (AHR) 的激活会改变基因表达,并增加二甲基雌激醇 (2ME) 的产生,而不会阻碍干细胞的维持或分化,可能会影响胎盘发育.
科学领域:
- 生殖生物学和毒理学.
- 胎盘发育中的细胞信号通路.
背景情况:
- 胎盘作为对环境毒素的屏障,和基碳化合物受体 (AHR) 信号介导对污染物的反应.
- 以前对AHR激活对人体热原体细胞功能的特定影响的理解是有限的.
研究的目的:
- 研究如何激活基碳化合物受体 (AHR) 信号影响人体热囊细胞的发育和分化.
- 探索AHR激活对热囊细胞干细胞 (TS) 和它们的分化后代的下游影响.
主要方法:
- 使用了人体热囊细胞干细胞 (TS) 的体外模型.
- 暴露TS细胞2,3,7,8-四二二氧化 (TCDD) 激活AHR信号传递.
- 在未分化和分化细胞中评估基因表达 (CYP1A1,CYP1B1) 和2-甲基雌激醇 (2ME) 生产.
主要成果:
- AHR激活显著增加了 trofhoblast 细胞中的 CYP1A1 和 CYP1B1 基因表达.
- 激活AHR并没有阻碍 trofhoblast 细胞保持干细胞或分化为外性 trofhoblast (EVT) 或 syncytiotrophoblast (ST) 细胞的能力.
- 在AHR激活后,观察到2-甲基雌激醇 (2ME) 的产量增加,这表明它可能在胎盘中发挥作用.
结论:
- AHR激活改变了人类热囊细胞中的基因表达,但保留了它们的发育潜力.
- 通过激活AHR来促进2ME的产生可能代表着一种影响胎盘发育的新机制.
- 试管测试结果表明,通过AHR作用的环境因素可能会影响胎儿发育,因此需要进一步的体内调查.
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