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用细胞特异性解构行为神经药理学

Brenda C Shields¹, Elizabeth Kahuno¹, Charles Kim¹

¹Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA.

Science (New York, N.Y.)

|April 8, 2017

概括

研究人员开发了DART药物, 精确地针对特定的细胞. 这种技术精确地绘制出AMPA受体在小鼠帕金森运动缺陷中的作用.

科学领域:

神经科学
药理学
分子生物学

背景情况:

了解行为需要研究分子,细胞和电路的决定因素.
广泛的蛋白质表达使特定细胞类型的急性操纵复杂化.
需要一种方法来结合药理精度和细胞类型特异性.

研究的目的:

开发一种新的技术,即通过结合激烈限制药物 (DART),用于快速定位特定细胞类型的药物.
研究AMPA受体 (AMPAR) 在与帕金森病相关的运动缺陷中的作用.
展示DART的多功能性, 针对不同的分子目标.

主要方法:

通过将药理学与细胞特异性药物输送的遗传工具相结合而开发DART,而不会改变原生标.
在神经元培养,脑切片和行为小鼠中进行了验证.
应用DART以确定特定的神经元群和对帕金森运动缺陷的受体贡献.

主要成果:

DART成功地将药物定位到特定的细胞表面,从而实现精确的操纵.
在帕金森症小鼠中,间接脊柱投射神经元 (iSPN) 和有力活性内神经元 (TAN) 中的AMPAR与运动缺陷有因果关系.
亚基尼西亚是由iSPNs和TANs (D2细胞) 驱动的,而运动执行则取决于D2与D1细胞中的AMPARs的比率.
设计了一种肌酸抗剂DART,证明了该方法对各种目标的适用性.

结论:

DART是一种强大的快速细胞特异药物输送技术, 克服了传统方法的局限性.
特定神经元群中的AMPARs (iSPNs和TANs) 在帕金森运动缺陷的病理生理学中起着关键作用.
DART技术可用于研究各种神经疾病和治疗目标.

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