Voltage-gated calcium channels in the development of photoreceptor synapses

光感受器突触发育中的电压门控钙通道

• 批准号: 10253608
• 负责人: John Wesley Maddox
• 金额: $ 6.74万
• 依托单位: UNIVERSITY OF TEXAS AT AUSTIN
• 依托单位国家: 美国
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-09-30 至 2021-09-29
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10253608
• 关键词: Voltage; gated; calcium; channels; development

PROJECT SUMMARY/ABSTRACT The overall objective of this proposal is to provide the applicant with training needed to become an independent investigator in the field of vision research. The goal of the research plan is to define processes that regulate the transmission of information at synapses in the retina, in order to shed light on therapeutic strategies for acquired and inherited forms of vision loss. In the retina, photoreceptors communicate the changes in light patterns as a neural signal at specialized connections known as “ribbon” synapses. Alterations in the development and mature function of these synapses cause vision impairment in humans. This transfer of information is coordinated by voltage-gated Cav1 Ca2+ channels. The objective of this proposal is to establish the roles of voltage-gated Cav1 Ca2+ channels in the development and maintenance of photoreceptor ribbon synapses using state-of the art techniques in microscopy (confocal, super-resolution, serial block face scanning electron microscopy) and patch clamp electrophysiology in combination with analyses of mice with altered expression of Cav1 channels. Aim 1 will define the role of the Cav1.4 channel in the initial assembly of rod and cone synapses while Aim 2 will determine the role of the Cav1.3 channel for the maintenance specifically of cone synapses. The research plan will provide training in developmental neurobiology, mammalian retinal electrophysiology, state-of the art microscopy and imaging, experimental design and rigor, and quantitative analyses of complex datasets. Training activities include institutionally supported activities to improve grantsmanship, scientific writing, oral communication, and mentorship.

项目总结/摘要 本建议的总体目标是为申请人提供必要的培训， 视觉研究领域的独立调查员。研究计划的目标是确定 调节视网膜突触信息传输的过程，以照亮 获得性和遗传性视力丧失的治疗策略。在视网膜中， 光模式的变化作为一种神经信号在专门的连接， 带状突触这些突触的发育和成熟功能的改变导致视觉 人类的损伤。这种信息传递由电压门控Cav 1 Ca 2+通道协调。 本提案的目的是确定电压门控Cav 1钙通道在细胞凋亡中的作用。 使用最先进的技术， 显微镜（共聚焦，超分辨率，连续块面扫描电子显微镜）和贴片 钳夹电生理学结合Cav 1通道表达改变的小鼠的分析。 目的1将定义Cav1.4通道在杆和锥突触的初始组装中的作用， 目的2将确定Cav1.3通道在维持锥体突触中的作用。 该研究计划将提供发育神经生物学、哺乳动物视网膜 电生理学，最先进的显微镜和成像，实验设计和严谨性，以及 复杂数据集的定量分析。培训活动包括机构支助的活动 以提高语法，科学写作，口头交流和指导。