离散的胎盘基因表达特征伴随着怀孕期间糖尿病疾病的分类
Enrico R Barrozo1, Diana A Racusin1, Michael D Jochum1
1Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Baylor College of Medicine and Texas Children's Hospital, Houston, TX.
American journal of obstetrics and gynecology
|May 19, 2024
概括
孕期糖尿病 (GDM) 亚型GDMA1和GDMA2表现出明显的胎盘基因表达特征,与健康的怀孕和2型糖尿病不同. 这些独特的特征与特定的胎盘细胞类型和微环境有关.
科学领域:
- 基因组学就是基因组学.
- 生殖生物学 生殖生物学
- 内分泌学 在内分泌学.
背景情况:
- 孕期糖尿病 (GDM) 影响高达10%的怀孕.
- GDM被分为GDMA1 (生活方式管理) 和GDMA2 (药物管理) 亚型.
- GDM亚型的独特临床性质尚不清楚.
研究的目的:
- 整合先进的转录基因技术 (批量,单细胞,空间RNA测序) 与精确的GDM亚型分类.
- 确定与GDMA1,GDMA2和2型糖尿病 (T2DM) 相关的独特的胎盘基因表达特征.
- 调查这些特征是否与特定的胎盘细胞群体和微观环境相关.
主要方法:
- 在GDMA1,GDMA2和T2DM病例中的胎盘基因表达与使用大量RNA测序 (n=54) 的对照进行了比较.
- 在使用RT-qPCR的独立队列 (n=122) 中验证了关键基因表达发现.
- 集成的单细胞,单核和空间转录组学,以精确确定基因签名的细胞和微观架构起源.
主要成果:
- 胎盘基因表达变异主要是由糖尿病亚型驱动的.
- 与对照组相比,在GDMA1 (2052个基因),GDMA2 (267个基因) 和T2DM (1520个基因) 中观察到显著的基因表达差异.
- 在表观遗传调节基因方面,GDMA1和T2DM具有相似之处,而GDMA2则显示出白蛋白和伤口愈合途径基因的表达增加.
- 在外性热囊细胞 (GDMA1) 和巨细胞 (GDMA2) 中发现了明显的细胞特征.
- 机器学习模型展示了从胎盘转录组预测糖尿病状况的潜力.
结论:
- 来自GDMA1,GDMA2和T2DM怀孕的胎盘表现出独特的基因特征.
- 这些特征还可以通过特定的胎盘细胞亚型和微观架构的变化来区分.
- 这些发现支持GDMA1和GDMA2作为具有独特分子基础的独特临床实体.
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