子宫内膜上皮质乳酸缺乏驱动CD8+ T细胞失调在不明原因的复发性植入失败中
Yuanlin He1,2, Kang Ke1,3, Qingxia Meng4
1State Key Laboratory of Reproductive Medicine and Offspring Health, Nanjing Medical University, Nanjing, Jiangsu, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|February 27, 2026
概括
重复植入失败 (RIF) 涉及异常的子宫内膜代谢. 腺上皮质减少乳酸的产生,通过增加细胞毒性CD8+T细胞,损害胚胎植入,阻碍怀孕.
科学领域:
- 生殖免疫学 生殖免疫学
- 内分泌学 在内分泌学.
- 代谢研究研究 代谢研究
背景情况:
- 复发性植入失败 (RIF) 是辅助生殖技术的一个重大挑战,通常与无法解释的原因有关.
- 子宫内膜在成功的胚胎植入中起着至关重要的作用,其代谢状态至关重要.
研究的目的:
- 调查子宫内膜代谢,特别是糖解和乳酸生产在不明原因的复发性植入失败 (RIF) 中的作用.
- 在RIF的背景下,阐明子宫内膜代谢和免疫细胞活性 (CD8+ T细胞) 之间的相互作用.
主要方法:
- 单细胞RNA测序子宫内膜组织从未解释的RIF和对照患者.
- 在体内小鼠模型中评估乳酸抑制和补充对植入物的影响.
- 在体外实验中评估乳酸抑制对CD8+T细胞功能的影响.
主要成果:
- 患有不明原因RIF的患者表现出细胞毒性CD8+T细胞的增殖和激活.
- 在RIF中的子宫内膜腺上皮表现出受损的糖解和关键代谢基因 (SLC2A1,ALDOA,LDHA,SLC16A3) 的减少表达.
- 在小鼠中抑制子宫内膜乳酸生产可以防止植入,这种效果可以通过乳酸补充和独立于CD8+T细胞来逆转.
结论:
- 在子宫内膜腺上皮质中异常的糖解和减少的乳酸生产有助于无法解释的RIF.
- 这些代谢变化可能会破坏免疫平衡,促进对胚胎植入不利的环境.
- 准子宫内膜乳酸代谢可能为RIF提供新的治疗策略.
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