相关实验视频

Updated: Jun 4, 2025

In Vivo Functional Study of Disease-associated Rare Human Variants Using Drosophila

In Vivo Functional Study of Disease-associated Rare Human Variants Using Drosophila

Published on: August 20, 2019

一种不稳定的GAP43变体导致神经发育缺陷

Mariko Noda¹, Ayumi Matsumoto^2,3, Hidenori Ito¹

¹Department of Molecular Neurobiology, Institute for Developmental Research, Aichi Developmental Disability Center, 713-8 Kamiya, Kasugai, Aichi, 480-0392, Japan.

Scientific reports

|December 31, 2024

概括

一种新的GAP43基因变异导致不稳定,导致智力障碍和发育问题. 这项研究揭示了GAP43的存在.

科学领域:

神经科学是一个神经科学.
遗传学是一个遗传学.
发展生物学发展生物学

背景情况:

增长相关蛋白43 (GAP43) 对神经系统发育和轴突引导至关重要.
将GAP43功能障碍与人类神经系统疾病联系在一起的确切机制尚未完全理解.

研究的目的:

调查在智力障碍和发育异常患者中发现的新型GAP43基因变异的作用.
阐明这种变异对蛋白质稳定性和神经元发育的功能后果.

主要方法:

整体外基因组测序以确定遗传变异.
使用初级培养神经元进行体外研究,以评估变异蛋白的稳定性.
使用子宫内电穿孔的体内研究来确认不稳定性,并评估GAP43沉默对神经元发育的影响.

主要成果:

在该患者身上发现了GAP43基因中的异合误解变异 (c.436G>A/p.E146K).
变种GAP43蛋白在体外和体内模型中都表现出不稳定性,模仿了哈普洛缺陷.
GAP43静止受损的轴突延长和树突树干形成,证实其在大脑发育中的关键作用.

结论:

鉴定到的GAP43变体导致智力障碍和神经发育障碍,原因是蛋白质不稳定.
这项研究突出了GAP43在轴突生长和树突模式中的重要功能.
研究结果提供了关于与GAP43相关的人类疾病的分子基础的见解.

更多相关视频

A Novel Strategy Combining Array-CGH, Whole-exome Sequencing and In Utero Electroporation in Rodents to Identify Causative Genes for Brain Malformations

A Novel Strategy Combining Array-CGH, Whole-exome Sequencing and In Utero Electroporation in Rodents to Identify Causative Genes for Brain Malformations

Published on: December 1, 2017

Modeling Encephalopathy of Prematurity Using Prenatal Hypoxia-ischemia with Intra-amniotic Lipopolysaccharide in Rats

Modeling Encephalopathy of Prematurity Using Prenatal Hypoxia-ischemia with Intra-amniotic Lipopolysaccharide in Rats

Published on: November 20, 2015

相关概念视频

Neurulation

Neurulation

Neurulation is the embryological process which forms the precursors of the central nervous system and occurs after gastrulation has established the three primary cell layers of the embryo: ectoderm, mesoderm, and endoderm. In humans, the majority of this system is formed via primary neurulation, in which the central portion of the ectoderm—originally appearing as a flat sheet of cells—folds upwards and inwards, sealing off to form a hollow neural tube. As development proceeds, the...