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Updated: Feb 22, 2026

Combining Quantitative Food-intake Assays and Forcibly Activating Neurons to Study Appetite in Drosophila

Combining Quantitative Food-intake Assays and Forcibly Activating Neurons to Study Appetite in Drosophila

Published on: April 24, 2018

胰岛素和白基因因通路协调Drosophila的适应性盐食欲

Sonali Puri¹, Jiun Sang^1,2, Prakash Pandey^1,2

¹Department of Bio and Fermentation Convergence Technology, Kookmin University, Seoul 02707, Republic of Korea.

Proceedings of the National Academy of Sciences of the United States of America

|February 20, 2026

概括

果具有通过神经内分泌回路调节的适应性盐食欲. 这种循环,涉及leucokinin (Lk) 和类似胰岛素的2 (Ilp2),使他们能够在缺乏盐时寻求盐,并在腹时避免盐.

科学领域:

神经内分泌学神经内分泌学
行为神经科学行为神经科学
无脊椎动物模型系统

背景情况:

精确调节盐摄入量对于生理功能和整体健康至关重要.
动物表现出适应性盐食欲,根据内部水平动态调整偏好.
控制这种行为灵活性的中枢神经机制在很大程度上是未知的.

研究的目的:

为了确定控制Drosophila melanogaster*适应性盐食欲的神经内分泌电路.
为了阐明内部状态如何转化为盐偏好的行为变化.
了解特定神经和神经元在调节寻找盐的行为中的作用.

主要方法:

在 *Drosophila melanogaster* 中利用向基因选来识别关键分子组件.
运用功能成像和电路操纵技术 (例如,沉默,激活) 来评估神经元功能.
研究了确定的神经元群体的直接传感能力.

主要成果:

鉴定出 leucoquinine (Lk),它的受体 (Lkr) 和类似胰岛素的2 (Ilp2) 对于适应性盐食欲至关重要.
证明,盐的剥夺特别激活前额叶子基因 (ALK) 神经元,然后向胰岛素产生细胞 (IPC) 发出信号.
表明ALK神经元和IPC都充当直接的细胞外传感器,通过PKA依赖信号连接内部状态与行为输出.

结论:

在 *Drosophila* 中定义了一个中央神经内分泌电路,该电路通过适应性调节盐食欲以维持平衡.
建立了ALK神经元和IPC作为关键的传感器,将内部状态与行为反应联系起来.
提供了一个理解国家依赖营养寻找和哺乳动物盐平衡障碍的潜在相关性的框架.

关键词:

在DILP2中,我们可以使用DILP2.莱奥可基尼尼尼的使用方法莱奥基基尼因受体的受体蛋白质激酶A是一种蛋白质激酶.盐的适应盐的适应

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