PGC-1α调节关键时期的开始/结束,调节皮质可塑性
Wei-Jun Zhang1, Hou-Zhen Shi1, Mei-Na Guo1
1The Fourth Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China.
Frontiers in molecular neuroscience
|October 12, 2023
概括
过氧体增殖器激活受体马联合激活器-α (PGC-1α) 基因删除会破坏关键时期的可塑性,导致类似精神分裂症的行为. 用GM6001准矩阵金属蛋白酶可纠正PGC-1α淘汰小鼠的可塑性和改善缺陷.
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
- 精神病学是一个精神病学.
背景情况:
- 过氧体增殖器激活受体马协作激活器-α (PGC-1α) 在抑制性内神经元中至关重要,并与神经精神疾病有关.
- 以前的研究在GABAergic神经元特定的PGC-1α淘汰赛 (KO) 小鼠中发现了类似精神分裂症 (SZ) 的特征,但潜在的分子机制仍然不清楚.
- 关键时期 (CP) 塑性,帕瓦尔胺内部神经元 (PVI) 成熟和周围神经元网络 (PNN) 形成的障碍与神经发育异常有关.
研究的目的:
- 研究PGC-1α基因删除与SZ类行为缺陷,PVI成熟,PNN完整性和突触超结构之间的关联.
- 探索PGC-1α在调节临界期 (CP) 开始和结束方面的作用,以及它对皮质可塑性时间的影响.
- 评估矩阵金属蛋白酶 (MMP) 抑制对纠正CP可塑性和改善SZ类症状的治疗潜力.
主要方法:
- 使用GABAergic神经元特定的PGC-1α淘汰 (KO) 鼠标模型 (Dlx5/6-Cre: Pgc-1alpha).
- 评估了类似SZ的行为,PVI成熟,PNN完整性和突触超结构.
- 给药GM6001,一种广泛的MMP抑制剂,以评估其对KO小鼠CP可塑性和突触结构的影响.
主要成果:
- 删除PGC-1α基因导致CP开始和结束失败,延长皮质可塑性.
- 在PGC-1αKO小鼠中,GM6001治疗有效地纠正了CP可塑性窗口,并改善了突触超结构.
- 此外,MMP抑制还可以挽救短期习惯缺陷并减轻异常突出,这是SZ的主要特征.
结论:
- PGC-1α通过控制CP的开始和结束,至少部分调节皮质可塑性.
- 通过MMP抑制准PNN结构为与PGC-1α失调相关的精神疾病提供了潜在的治疗策略.
- 通过战略干预来加强分子制动可能是精神疾病的新型预防疗法.
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