病毒辅助绘制神经输入到下丘脑中的一个养中心的神经输入的映射
J DeFalco1, M Tomishima, H Liu
1Howard Hughes Medical Institute, The Rockefeller University, New York, NY 10021, USA.
概括
研究人员开发了一种新型伪狂犬病病毒,用于精确的神经电路跟踪. 这种工具揭示了更高的大脑中心如何通过在下丘脑中传递勒丁信号来影响食欲调节.
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
- 遗传学 是一个遗传学.
背景情况:
- 了解神经回路对于破译复杂的大脑功能至关重要.
- 在下丘脑中传递勒素信号调节食欲,但其上游调节尚未完全理解.
研究的目的:
- 开发一种用于逆行神经追踪的新型病毒工具.
- 为了研究神经通路调节在下丘脑中瘦素信号传递.
主要方法:
- 开发了一种编码绿色光蛋白的Cre-依赖的伪狂犬病病毒.
- 病毒在表达Cre的神经酸Y或勒受体表达神经元的小鼠的弧形核中进行立体注射.
- 脑部切割和光显微镜用于识别反向标记的神经元.
主要成果:
- 工程病毒成功地从向的下丘脑神经元进行了逆行追踪.
- 从包括杏仁体和皮质在内的各种大脑区域到莱普信号神经元的已识别的输入.
- 证明了较高的皮质中心投射到并可能调节下丘脑质蛋白信号传递.
结论:
- 开发的伪狂犬病病毒是绘制神经回路的有效工具.
- 高层大脑中心起到调节在下丘脑内瘦素信号传递的作用.
- 这种方法可以应用于研究其他复杂的神经电路.
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