猪概念动物利用细胞外囊泡与子宫内膜进行干扰素-媒介的副沟通†
Joe W Cain1, Heewon Seo2, Katie Bumgardner1
1Department of Veterinary Integrative Biosciences, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA.
Biology of reproduction
|March 19, 2024
概括
细胞外囊泡 (EVs) 通过子宫内膜传输概念性衍生干扰素-马 (IFNG),促进关键的怀孕信号. 这一发现揭示了胚胎早期发育过程中细胞间通信的新机制.
科学领域:
- 生殖免疫学 生殖免疫学
- 细胞生物学 细胞生物学
- 分子内分泌学分子内分泌学
背景情况:
- 干扰素- (IFNG) 在猪怀孕期间对概念的生存至关重要.
- 通过子宫内膜光上皮质 (LE) 传输IFNG的机制尚不清楚.
- 康塞普图斯 (Conceptus trophectoderm) 是IFNG的来源,但其通过LE的通道是未知的.
研究的目的:
- 调查细胞外囊泡 (EVs) 在将概念性衍生IFNG通过子宫内膜LE传输中的作用.
- 阐明概念体和子宫流体之间的膜信号传递机制.
主要方法:
- 免疫光检测 IFNG 蛋白质在 trofhectoderm 和子宫内膜 LE.
- 用重组IFNG和EVs培养碎的子宫内膜扩展体.
- 西部涂抹检测IFNG在EV从子宫液.
- 实时PCR用于评估IFNG刺激的基因表达.
- 整个子宫部分的培养与EVs.
主要成果:
- 在 trofhectoderm 和子宫内膜LE中检测到IFNG蛋白.
- 从孕中分离出的EV含有IFNG,与非孕的EV不同.
- 对子宫内膜扩张物的EV治疗诱导了IFNG刺激的基因表达.
- 在子宫部分证实了EV介导的IFNG跨越LE的运输.
结论:
- 细胞外囊泡 (EVs) 被确定为IFNG从概念体 trofhectoderm到子宫层的传输的关键媒介.
- EVs促进了对植入和生存至关重要的副沟通.
- 这项研究揭示了一种新的途径,用于在怀孕早期通过生物障碍传递细胞因子.
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