Electrical coupling coordinates the activity of neurons that trigger reproduction

电耦合协调触发繁殖的神经元活动

• 批准号: 386664-2010
• 负责人: Magoski, Neil
• 金额: $ 2.91万
• 依托单位: Queen's University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=485455
• 关键词: Electrical; coupling; coordinates; activity; neurons

My research centres on nerve cells from brain. These cells use bio-electricity to receive information from the outside world, signal each other, and initiate behaviours by sending output signals to muscles and glands. I am interested in how the electrical properties of nerve cells are controlled, as well as how output is influenced when multiple nerve cells work together. Specifically, I study the brain of a sea snail, known as Aplysia californica, which has many large and identifiable nerve cells. My focus is a group of nerve cells involved in initiating reproductive behaviour. The present proposal investigates the means by which these nerve cells synchronize their electrical activity to ensure timely delivery of the output that triggers reproduction. Electrical properties are governed by minute holes called channel proteins. Membrane channels pass ions (such as calcium, sodium, or potassium) in and out of the cell, while cell-to-cell channels pass ions between cells that are in contact with one another. Synchronized electrical activity is achieved through cell-to-cell channels. My aim is to examine how these channels operate, what factors in the nerve cell influence their function, and the direct role they play in shaping output. In doing so, I will provide opportunities for graduate and undergraduate students to train in the collection and analysis of bio-electrical data. Such training has served as a platform for my past personnel to subsequently succeed in academic science, professional school, or the private sector. This application offers the rather unique prospect of examining cell-to-cell communication in a behaviourally-relevant system that is well-defined by numerous years of prior research. In general, the key behaviours of many organisms, such as drinking, eating, and various aspects of reproduction, are caused or impacted by a collective and co-ordinated output from nerve cell groups. Thus, my work on Aplysia will also impact the understanding of animal biology and brain function.

我的研究集中在大脑的神经细胞上。这些细胞利用生物电接收来自外界的信息，相互发送信号，并通过向肌肉和腺体发送输出信号来启动行为。我感兴趣的是如何控制神经细胞的电特性，以及当多个神经细胞一起工作时，输出是如何受到影响的。具体来说，我研究的是一种名为加州海蜗牛的海蜗牛的大脑，它有许多大而可识别的神经细胞。我的研究重点是一组参与启动生殖行为的神经细胞。目前的建议研究这些神经细胞同步它们的电活动，以确保及时输出触发生殖的手段。电学性质是由被称为通道蛋白的微小孔洞控制的。膜通道将离子（如钙、钠或钾）进出细胞，而细胞间通道则将相互接触的细胞间离子传递。同步电活动是通过细胞间通道实现的。我的目的是研究这些通道是如何运作的，神经细胞中的哪些因素影响它们的功能，以及它们在形成输出中所起的直接作用。在此过程中，我将为研究生和本科生提供收集和分析生物电数据的培训机会。这样的培训为我过去的员工提供了一个平台，使他们后来在学术科学、专业学校或私营部门取得成功。这个应用程序提供了一个相当独特的前景，在一个行为相关的系统中检查细胞间的通信，这个系统是由多年的先前研究明确定义的。一般来说，许多生物体的关键行为，如饮水、饮食和生殖的各个方面，都是由神经细胞群的集体和协调输出引起或影响的。因此，我在applysia上的工作也将影响对动物生物学和大脑功能的理解。