通过Dilp8与Lgr3的结合显示出同步生长和成熟的大脑电路
Diana M Vallejo1, Sergio Juarez-Carreño1, Jorge Bolivar2
1Instituto de Neurociencias, Consejo Superior de Investigaciones Cientifícas and Universidad Miguel Hernández, Campus de Sant Joan, Apartado 18, 03550 Sant Joan, Alicante, Spain.
Science (New York, N.Y.)
|October 3, 2015
概括
科学家发现Lgr3是Drosophila类似胰岛素的Dilp8的关键受体. 这一发现揭示了一个神经回路,
科学领域:
- 发育生物学
- 神经科学
- 遗传学
背景情况:
- 身体尺寸的稳定性对于发育的稳定性至关重要.
- 开发动物的缓冲尺寸变化的机制尚不完全理解.
- 果类胰岛素Dilp8在生长平衡中起作用,调整生长和成熟以保持正常大小.
研究的目的:
- 识别Dilp8类胰岛素的受体.
- 为了阐明神经回路调解Dilp8的恒温功能.
- 了解如何共同调节生长和成熟速度以稳定生物体大小.
主要方法:
- 功能测试
- 氨酸3',5'-单酸 (cAMP) 的测定方法
- 基因分析
- 通过突触合作伙伴进行绿色光蛋白复制 (GRASP)
主要成果:
- Lgr3被确定为Dilp8受体.
- 一对Lgr3神经元被定义为同居调节的关键介质.
- 这些Lgr3神经元与产生胰岛素的细胞和产生前胸激素的神经元连接.
- 发现的电路减弱了生长和成熟.
结论:
- Lgr3 作为Dilp8受体,调解发育大小平衡.
- 一个涉及Lgr3神经元的新型神经回路调节生长和成熟.
- 这种电路确保了生长和成熟速度的匹配和共同调节,以稳定生物体的大小.
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