低氧诱导因子信号调节胚胎内部神经元发育,GRIN2B表达和成人皮质功能
I-Ling Lu1, Mengyi Song2, Cinthia Rangel-Sandoval3
1The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco (UCSF), San Francisco, CA 94143, USA; Department of Pediatrics, Division of Neonatology, UCSF, San Francisco, CA 94158, USA; Department of Neurology, UCSF, San Francisco, CA 94143, USA.
Developmental cell
|February 6, 2026
概括
缺氧诱导因子 (HIFs) 对大脑发育至关重要,调节抑制性神经元产生和突触功能. 这项研究揭示了HIF信号传递.
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 发展生物学 发展生物学
背景情况:
- 低氧诱导因子 (HIF) 调节细胞对氧气的反应和大脑中的新陈代谢.
- HIFs在抑制神经元发育中的作用尚不清楚.
研究的目的:
- 调查HIF信号传递在中枢质突出 (MGE) 中抑制神经元的发展中的作用.
- 确定涉及内部神经元前体增殖和突触生成的HIF目标.
主要方法:
- 在小鼠的MGE中条件删除Hif1/2a和von Hippel-Lindau (vHL).
- 单细胞转录组学用于识别HIF目标.
- 在成年HIF1条件淘汰赛 (cKO) 皮质中分析帕瓦胺 (PV) 内神经元,GABAergic突触和GRIN2B表达.
- 电生理学记录以评估长期潜能 (LTP).
主要成果:
- 在MGE前体中的Hif1/2a的损失减少了扩散,而vHL的损失增加了它.
- HIF1A被确定为GRIN2B的直接激活剂,编码NMDA受体亚单元2B.
- 成年HIF1 cKO小鼠显示PV 内神经元减少,GABAergic突触减少,LTP受损.
结论:
- HIF信号在调节抑制性神经元产生方面发挥着非正规的作用.
- HIF对于GRIN2B表达和皮质电路的成熟至关重要.
- 这凸显了HIF在突触功能和大脑电路发育中的重要性.
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