在单细胞和T细胞中通过妊娠特异性葡萄糖蛋白1调节加勒-9介导的反应
Mirian Mendoza1, Angela Ballesteros2, Elizabeth Rendon-Correa1
1Department of Pathology, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA.
The Journal of biological chemistry
|August 9, 2024
概括
孕期特异性糖蛋白1 (PSG1) 结合了多种胆固醇蛋白,特别是胆固醇蛋白9,影响免疫细胞的反应,这对健康怀孕至关重要. 这种相互作用依赖于碳水化合物,并且在不同物种中保持.
科学领域:
- 生殖生物学 生殖生物学
- 免疫学 免疫学 免疫学
- 葡萄糖生物学 葡萄糖生物学
背景情况:
- 成功怀孕需要复杂的内分泌,免疫和代谢协调.
- 孕期特异性葡萄糖蛋白 (PSG) 和胆蛋白是生殖生物学中的关键调节剂.
- 之前的工作确立了PSG1与加勒-1 (GAL-1) 的结合.
研究的目的:
- 描述PSG1与其他与怀孕相关的甲状腺素 (GAL-3, -7, -9, -13) 的相互作用.
- 研究PSG1对免疫细胞中GAL-9反应的调节.
- 探索人类和小鼠之间的PSG - 黄素相互作用的功能性保护.
主要方法:
- 生物化学测试以确定PSG1与各种质素的结合亲和力.
- 对PSG1-GAL-9相互作用的碳水化合物依赖性研究.
- 使用人类单细胞,小鼠巨细胞和T细胞的功能性测试.
- 对PSG1-GAL-9与已知的配体结合的比较分析 (Tim-3,CD44).
- 鼠类Psg23结合研究与鼠类胆素.
主要成果:
- PSG1与GAL-1,GAL-3和GAL-9结合,对GAL-9的亲和力最高.
- PSG1-GAL-9的相互作用是碳水化合物依赖的.
- PSG1调节人体单细胞,小鼠巨细胞和T细胞中的GAL-9反应.
- PSG1 结合了 GAL-9 的两个碳水化合物识别域.
- 鼠类Psg23表现出与一些鼠类质素的结合,表明功能性保存.
结论:
- PSG1与GAL-9的相互作用是妊娠期间调节免疫反应的重要途径.
- 碳水化合物依赖的结合机制突出了一个新的监管界面.
- 功能性保存表明,哺乳动物怀孕中PSG-质素相互作用的作用是保留的.
- 这些发现提供了关于保持母体耐受性和胎儿发育的见解.
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