与ATP1A1相关的疾病需要来自一个等位基因的功能障碍蛋白质产物
Kerri Spontarelli1, Victoria C Young1, Ryan Sweazey1
1Department of Cell Physiology and Molecular Biophysics, Center for Membrane Protein Research, Texas Tech University Health Sciences Center, Lubbock, TX, USA.
Biochimica et biophysica acta. Molecular cell research
|September 2, 2023
概括
在Na+/K+-ATPaseαα1亚单元 (ATP1A1) 基因中的异构体变异与疾病有关. 然而,无蛋白ATP1A1变体不会在小鼠或人类中引起疾病,这表明需要功能缺陷.
科学领域:
- 遗传学 遗传学 是一个
- 神经科学是一个神经科学.
- 生物化学 生物化学
背景情况:
- 在ATP1A1中,编码Na+/K+-ATPase (NKA) alpha1亚单元的异合体生殖系变体,与原发性超代谢和Charcot-Marie-Tooth病 (CMT) 有关.
- 导致CMT的ATP1A1变体导致NKA功能丧失,影响细胞信号和生存的基本电化学梯度.
- 阿尔法1异型在外围轴突中表达广泛且占主导地位,在人类群体中对ATP1A1变体观察到强烈的负选择.
研究的目的:
- 调查异构蛋白-零ATP1A1等位基的哈普洛缺陷是否足以引起疾病.
- 为了评估异合体Atp1a1淘汰赛小鼠的神经肌肉特征.
- 为了确定在ATP1A1变异的背景下,运动是否会加剧CMT透率.
主要方法:
- 与野生类型的 littermates 相比,生成和神经肌肉评估异合体Atp1a1淘汰赛小鼠 (Atp1a1+/-).与野生类型 littermates 相比.
- 现型评估小鼠年龄高达18个月.
- 携带无蛋白ATP1A1变体的人类成年人的临床表型 (p.Y148*).
主要成果:
- Atp1a1+/-小鼠在18个月大时表现出正常的神经肌肉特征.
- 具有无蛋白ATP1A1变异的人体实验对象没有显示ATP1A1相关疾病的临床特征.
- 这些发现表明,蛋白质零变异可能不会诱导疾病或透率低/发病迟.
结论:
- 一个功能障碍的基因产物,而不是蛋白质的缺失,似乎是 ATP1A1 变体诱导疾病的必要条件.
- 由于无蛋白ATP1A1变异的哈普洛因缺乏症似乎不会引起疾病.
- 可能需要进一步的研究来了解与蛋白质零变体潜在病理相关的低透率或高发病年龄.
关键词:
在 ATP1A1A1 中,活动运输 活动运输查科特玛丽·图斯 (Charcot Marie Tooth) 是一个牙科学家.过高阿尔多斯特主义遗传性神经病变是一种遗传性神经病变.纳+),K+) - - 亚太酶P型的ATP酶是一种P型的ATP酶.更多相关视频
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