通过准应激反应信号通路来逆转焦虑
Saurabh Pandey1, Wenyan Han1, Jun Li1
1Synapse and Neural Circuit Research Section, National Institute of Neurological Disorders and Stroke, NIH, Bethesda, MD 20892.
概括
慢性压力通过破坏突触功能,使焦虑和抑郁变得更糟. 准Src酶活性可以逆转这些影响,为情绪障碍提供新的治疗途径.
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
- 药理学 药理学是指药理学的学科.
背景情况:
- 目前的焦虑和抑郁症治疗有显著的副作用和有限的疗效.
- 对于新型分子标来开发改进的药物,有极大需求.
研究的目的:
- 为了确定由慢性压力引发的分子级联,加剧焦虑和抑郁类行为.
- 调查针对治疗干预的潜在目标是这种级联.
主要方法:
- 在小鼠中诱导慢性压力以模拟焦虑和抑郁障碍.
- 对Src激酶活性,素酸化和MyosinVa (MyoVa) 与Neuroligin2 (NL2) 相互作用的分析.
- 药理上抑制Src酶,评估行为和突触变化.
主要成果:
- 慢性压力会增加Src酶活性和calmodulin氨酸酸化.
- 这导致MyoVa-NL2相互作用的减少,抑制性传播的减少,以及焦虑类行为的增加.
- 药理性Src抑制可以扭转这些突触缺陷和类似焦虑的行为,这些行为取决于MyoVa-NL2相互作用.
结论:
- 一个涉及Src,calmodulin,MyoVa和NL2的分子级联调解压力诱导的焦虑和抑郁行为.
- 已识别的分子和行为表型是可逆的.
- Src 激酶代表了对焦虑和抑郁障碍的有希望的治疗点.
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