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慢性治疗对神经元刺激性和GABAergic传递在Ank3突变小鼠模型中的影响
René N Caballero-Florán1, Andrew D Nelson2, Lia Min1
1Department of Pharmacology, University of Michigan Medical School, Ann Arbor, MI 48109.
bioRxiv : the preprint server for biology
|November 14, 2023
概括
治疗通过增强抑制信号来使双相情感障碍 (BD) 的小鼠模型中的大脑活动正常化. 这一发现为BD和相关的精神疾病提供了新的治疗途径.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
- 精神病学是一个精神病学.
背景情况:
- 双极性障碍 (BD) 是一种与心理残疾和自杀风险相关的重大精神疾病.
- 全基因组关联研究确定ANK3基因是BD的风险因素,但潜在的机制尚不清楚.
- 由ANK3编码的Ankyrin-G通过与GABARAP的相互作用稳定抑制突触.
研究的目的:
- 为了研究破坏安基林-G/GABARAP相互作用的Ank3突变 (p.W1989R) 的功能后果.
- 在BD的小鼠模型中探索和GSK-3β抑制的治疗潜力.
主要方法:
- 用p.W1989R误解突变生成一个带有Ank3的小鼠模型.
- 在体感皮质中评估神经元刺激性和抑制信号.
- 长期治疗突变小鼠的或GSK-3β抑制剂Tideglusib.
主要成果:
- p.W1989RAnk3突变减少了抑制信号和增加了金字塔细胞刺激性.
- 在突变小鼠中,治疗使神经元刺激正常化,并增强了GABAergic postsynaptic电流.
- 提德格卢西布治疗在抑制性传播方面产生了类似的改善.
结论:
- 通过增加GABAergic神经传递来调节大脑皮层金字塔神经元刺激性,可能通过GSK-3β抑制.
- 这些发现突显了ANK3变体在BD病变发生中的作用.
- 这项研究对治疗BD和其他涉及改变抑制信号的疾病,如精神分裂症和自闭症谱系障碍,有意义.
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