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Abstract

Neuroscience

通过冷冻切片初步验证立体定向注射坐标

Published: July 19th, 2024

DOI:

10.3791/66262

1Department of Anesthesiology, Renji Hospital, Shanghai Jiaotong University, School of Medicine, 2Key Laboratory of Anesthesiology (Shanghai Jiaotong University), Ministry of Education, 3Department of Anesthesiology, Shanghai General Hospital, Shanghai Jiaotong University
* These authors contributed equally

特定大脑区域的立体定向注射构成了基础神经科学中的一项基本实验技术。研究人员通常根据小鼠脑图谱或已发表的材料来选择立体定位注射参数,这些材料采用了不同群体/年龄的小鼠和不同的立体定位设备,因此需要进一步验证立体定位坐标参数。钙成像、化学遗传学和光遗传学操作的功效依赖于感兴趣区域内报告基因的精确表达,通常需要数周的努力。因此,如果不事先验证目标大脑区域的坐标,这将是一项耗时的任务。使用适当的染料代替病毒并实施冷冻切片,研究人员可以在染料给药后立即观察注射部位。这有助于在实际注射位置和理论位置之间存在差异的情况下及时调整坐标参数。在随后的实验中,这种调整显著提高了靶区域内病毒表达的准确性。

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