单细胞测序揭示了视觉剥夺和恢复期间视觉皮层中可逆性质细胞重塑
Xiaoqi Gong1, Jiaojiao Feng2, Zhe Xu1
1College of Ophthalmology and Optometry, Shandong University of Traditional Chinese Medicine, Jinan, China.
Frontiers in immunology
|March 6, 2026
概括
视觉剥夺会改变视觉皮层的非神经元细胞,导致炎症并阻断寡类细胞的分化. 恢复在很大程度上扭转了这些变化,揭示了可逆的微质-寡质细胞轴对视觉皮层可塑性至关重要.
科学领域:
- 神经科学是一个神经科学.
- 细胞生物学 细胞生物学
- 眼科医生 眼科 眼科
背景情况:
- 视觉皮层表现出显著的可塑性,容易受到异常视觉输入的破坏.
- 形式剥夺近视 (FDM) 是眼睛生长的模型,但在剥夺和恢复期间视觉皮层的非神经元细胞反应尚不清楚.
研究的目的:
- 在形状剥夺近视和随后的视觉恢复期间,描述视觉皮层非神经元细胞的动态变化.
- 阐明微质细胞和小质细胞在对视觉输入变化的反应中的功能性作用和相互作用.
主要方法:
- 单细胞RNA测序 (scRNA-seq) 用于描绘几内亚猪的主要视觉皮层 (V1).
- 实验组包括正常对照组,5周单眼剥夺 (FDM) 和4周剥夺之后1周恢复 (REC).
- 使用免疫光学,qPCR,西式涂抹,电子显微镜和生物信息分析 (轨迹推断,细胞间通信) 的验证.
主要成果:
- 视觉剥夺诱导了亲炎性微质细胞和减少的寡类细胞数量,损害了髓和分化.
- 轨迹分析显示,阻断了寡头细胞的分化,增强了微细胞到寡头细胞前体的炎症信号传递.
- 恢复在很大程度上逆转了微质炎症,恢复了与髓相关的基因表达,并解决了分化阻塞.
结论:
- 视觉皮层中的非神经元细胞 (微细胞,寡细胞) 经历可逆重编程,以应对视觉输入变化.
- 一个动态的微质-寡腺细胞轴对于近视的皮质可塑性至关重要.
- 研究结果表明,视觉康复策略的潜在分子标.
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