相关实验视频
Updated: Jun 22, 2025

08:58
Artificial Intelligence Approaches to Assessing Primary Cilia
Published on: May 1, 2021
3.4K
初级毛形成需要与李氏综合征相关的线粒体蛋白NDUFAF2F2
Chien-Hui Lo1, Zhiquan Liu1, Siyu Chen1
1Department of Ophthalmology, Stanford University School of Medicine, Palo Alto, California, USA.
The Journal of clinical investigation
|July 1, 2024
概括
这项研究揭示了线粒体功能和初级乳毛信号传递之间的关键联系,表明NDUFAF2对于乳毛形成至关重要. 补充NAD+可以纠正纤毛病的缺陷,提供治疗潜力.
科学领域:
- 细胞生物学 细胞生物学
- 神经科学是一个神经科学.
- 遗传学 遗传学 是一个
背景情况:
- 与线粒体相关的神经退行性疾病与原发性乳毛功能障碍有关.
- 在NDUFAF2 (线粒体复合体I) 中的突变导致利氏综合征.
- ARMC9突变 (基底体蛋白) 导致朱伯特综合征,一种纤毛病.
研究的目的:
- 建立线粒体新陈代谢和初级乳毛细胞信号传递之间的机械联系.
- 调查NDUFAF2在线粒体和状细胞功能中的作用.
- 为了探索治疗纤毛病的治疗策略.
主要方法:
- 在体外和体内研究了NDUFAF2的作用.
- 确定NDUFAF2作为一个ARMC9有约束力的合作伙伴.
- 评估了NDUFAF2表达和NAD+补充对细胞和生物模型的影响.
主要成果:
- 丢失NDUFAF2导致线粒体和状细胞缺陷.
- NDUFFAF2对于毛形成是必要的,也是足够的.
- 在ARMC9缺陷细胞中,NDUFFAF2挽救了缺陷.
- 在ARMC9缺陷模型和患者中,NAD+补充恢复了功能.
结论:
- 主要乳毛和线粒体信号之间存在机械联系.
- NDUFFAF2是乳毛形成和线粒体健康的关键调节者.
- 补充NAD+显示了ARMC9相关的纤维病变的治疗前景.
相关概念视频
ATP Synthase: Structure
12.3K
ATP synthase or ATPase is among the most conserved proteins found in bacteria, mammals, and plants. This enzyme can catalyze a forward reaction in response to the electrochemical gradient, producing ATP from ADP and inorganic phosphate. ATP synthase can also work in a reverse direction by hydrolyzing ATP and generating an electrochemical gradient. Different forms of ATP synthases have evolved special features to meet the specific demands of the cell. Based on their specific feature, ATP...
12.3K
Mechanism of Filopodia Formation
2.3K
Filopodia are thin, actin-rich cellular protrusions that play an important role in many fundamental cellular functions. They vary in their occurrence, length, and positioning in different cell types, suggesting their diverse roles.
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
2.3K
Microtubules in Signaling
1.7K
The primary cilium, made up of microtubules, acts as antennae on the cell surfaces for relaying external stimuli into the cells. These fine hair-like structures are present, generally one per cell. These are non-motile cilia in a 9+0 microtubules arrangement, where the central pair of microtubules are absent. The primary cilia arise from the basal body embedded in the cell membrane. Intraflagellar transport (IFT) carries requisite proteins from the cytoplasm to the cilium because the primary...
1.7K
Mitochondrial Protein Sorting
4.3K
Mitochondria are double-membrane organelles of the eukaryotes involved in cellular metabolism, signaling, ATP synthesis, and programmed cell death. Each of these processes requires specific proteins and enzymes that must be correctly sorted to the right mitochondrial subcompartment for the proper functioning of the organelle.
Most of these mitochondrial proteins are encoded by the nucleus and imported to the mitochondria as unfolded or loosely folded precursors. Mitochondrial precursors...
Most of these mitochondrial proteins are encoded by the nucleus and imported to the mitochondria as unfolded or loosely folded precursors. Mitochondrial precursors...
4.3K
Mechanism of Ciliary Motion
3.6K
The ciliary structures were first seen in 1647 by Antonie Leeuwenhoek while observing the protozoans. In lower organisms, these appendages are responsible for cell movement, while in higher organisms, these appendages help in the movement of the extracellular fluids within the body cavities.
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
3.6K
Porin Insertion in the Outer Mitochondrial Membrane
2.9K
Porins are beta-barrel proteins translocated to the mitochondrial outer membrane through the TOM complex into the intermembrane space. Porin precursors bind TIM chaperones within the intermembrane space and are guided to the Sorting and Assembly Machinery complex or SAM complex on the outer mitochondrial membrane.
Three models describe the assembly of porins by the SAM complex and their insertion into the outer membrane. Model 1 suggests that porins are assembled outside the SAM channel as the...
Three models describe the assembly of porins by the SAM complex and their insertion into the outer membrane. Model 1 suggests that porins are assembled outside the SAM channel as the...
2.9K

