抑制ATP8A2密码拼接的TDP-43意味着在ALS/FTD中存在由酸胺驱动的神经炎症
James T O'Connor1, Hui Qi Loo1, Caiwei Guo2
1Department of Developmental Biology, Washington University in St. Louis, St. Louis, MO, USA.
bioRxiv : the preprint server for biology
|December 15, 2025
概括
对神经元膜完整性至关重要的ATP8A2的损失导致神经炎症和神经退行. 向免疫细胞提供了一种潜在的治疗性抗衰竭和ALS-FTD.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 遗传学 遗传学 是一个
背景情况:
- 不适当的脂胺 (PS) 外化有助于神经炎症,这是神经退行性疾病的关键因素.
- ATP8A2是一种翻酶,它调节了PS在内部等离子体膜的局部化.
- 在ATP8A2的突变与症综合征CAMRQ4和Wobbler-Lethal小鼠模型有关.
研究的目的:
- 研究ATP8A2在神经炎症和神经退行症中的作用.
- 为了确定ATP8A2作为TDP-43密码外子抑制的目标.
- 探索针对神经退行性疾病的免疫细胞的治疗策略.
主要方法:
- 在TDP-43耗尽后,对人类神经元和ALS-FTD患者大脑中的ATP8A2剪接的分析.
- 在Atp8a2淘汰赛小鼠中对PS暴露和神经炎症的评估.
- 对外围巨细胞和中央微质细胞枯竭对Atp8a2淘汰赛小鼠的影响的评估.
主要成果:
- 鉴定出ATP8A2是TDP-43密码外子抑制的目标.
- 在小鼠中,ATP8A2的损失导致PS暴露增加和神经炎症.
- 免疫细胞,特别是巨细胞和微质细胞的消耗显著改善了Atp8a2淘汰小鼠的生存和运动功能.
结论:
- ATP8A2 是 TDP-43.3 的一种病理相关的标.
- ATP8A2的失调有助于免疫媒介的神经退行.
- 抑制细胞免疫细胞对神经元的攻击为CAMRQ4和ALS-FTD提供了潜在的治疗途径.
更多相关视频
07:14Optogenetic Phase Transition of TDP-43 in Spinal Motor Neurons of Zebrafish Larvae
Published on: February 25, 2022
6.4K
13:31Novel Atomic Force Microscopy Based Biopanning for Isolation of Morphology Specific Reagents against TDP-43 Variants in Amyotrophic Lateral Sclerosis
Published on: February 12, 2015
9.1K
相关概念视频
02:18Alternative RNA Splicing
24.6K
Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
24.6K
01:19Allosteric Proteins-ATCase
6.4K
Binding sites linkages can regulate a protein's function. For example, enzyme activity is often regulated through a feedback mechanism where the end product of the biochemical process serves as an inhibitor.
Aspartate transcarbamoylase (ATCase) is a cytosolic enzyme that catalyzes the condensation of L-aspartate and carbamoyl phosphate to N-carbamoyl-L-aspartate. This reaction is the first step in pyrimidine biosynthesis. UTP and CTP, the end products of the pyrimidine synthesis...
Aspartate transcarbamoylase (ATCase) is a cytosolic enzyme that catalyzes the condensation of L-aspartate and carbamoyl phosphate to N-carbamoyl-L-aspartate. This reaction is the first step in pyrimidine biosynthesis. UTP and CTP, the end products of the pyrimidine synthesis...
6.4K
01:48ATP Synthase: Mechanism
16.6K
In animals, the mitochondrial F1F0 ATP synthase is the key protein that synthesizes ATP molecules through a complex catalytic mechanism. While the nuclear genome encodes the majority of ATP synthase subunits, the mitochondrial genome encodes some of the enzyme's most critical components. The formation of this multi-subunit enzyme is a complex multi-step process regulated at the level of transcription, translation, and assembly. Defects in one or more of these steps can result in decreased...
16.6K