大脑内皮细胞HIF-1α通过加快糖解驱动的乳酸生产来加剧与糖尿病相关的认知障碍
Jicong Chen1, Ruohui Lin1, Cuihua Jiang2
1School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China.
Acta pharmaceutica Sinica. B
|November 28, 2025
概括
2型糖尿病通过增加大脑内皮缺氧诱导因子1-α (HIF-1α) 来加速认知障碍. 这会增加乳酸,损害成人海马神经发生和记忆.
科学领域:
- 神经科学是一个神经科学.
- 内分泌学 在内分泌学.
- 细胞生物学 细胞生物学
背景情况:
- 2型糖尿病 (T2D) 是认知障碍的重要危险因素.
- 在T2D中失调的缺氧诱导因子 (HIF) 信号损害了对缺氧的适应性反应,恶化了并发症.
- 在糖尿病相关认知障碍 (DACI) 中HIF的具体作用尚未完全理解.
研究的目的:
- 研究HIF-1α在T2D相关认知障碍中的作用.
- 在T2D中探索连接HIF-1α,乳酸和成人海马神经发生 (AHN) 的机制.
- 为了确定DACI的潜在治疗目标.
主要方法:
- 在糖尿病小鼠的大脑内皮细胞 (ECs) 中检查的HIF-1α水平 (db/db).
- 利用脑ECs特定的HIF-1α敲除来评估其对认知和神经元损伤的功能影响.
- 进行RNA测序以分析脑EC中的糖解,并测量T2D患者脑脊液中的乳酸盐水平.
- 在小鼠体内进行乳酸盐和牛酸盐的输入,以评估它们对认知功能和AHN的影响.
- 评估了亚洲酸的神经保护作用.
主要成果:
- 在db/db小鼠的大脑EC中发现HIF-1α水平升高.
- 在大脑EC中抑制HIF-1α改善了T2D诱导的记忆丧失和神经元损伤.
- 抑制HIF-1α降低了脑EC中的糖解和乳酸生产.
- 在T2D患者中,脑脊液中乳酸水平的增加与认知功能障碍相关.
- 乳酸盐会损害AHN并加速认知衰退,而酸盐会延迟记忆缺陷.
- 亚洲酸通过减少HIF-1α和随后的乳酸诱导的AHN损伤来保护对认知障碍.
结论:
- 内皮HIF-1α在T2D相关的认知障碍中发挥着关键作用.
- HIF-1α通过增加海马乳酸生产促进认知衰退,从而损害成人海马神经发生.
- 准大脑内皮细胞HIF-1α是治疗T2D认知障碍的潜在治疗策略.
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