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Assembly of Complex Microtubule Structures01:32

Assembly of Complex Microtubule Structures

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Complex microtubule structures are present in resting cells and in dividing cells. In resting cells, they are responsible for maintaining the cellular architecture, tracks for intracellular transport, positioning of organelles, assembly of cilia and flagella. They mediate the bipolar spindle assembly for chromosomal segregation and positioning of the cell division plate in dividing cells. The formation of microtubule complex structures depends on the cell type, cell stage, and cell function.
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In Vitro Aggregation Assays Using Hyperphosphorylated Tau Protein
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结构和形态上不同的病理性tau组合不同影响GVB积累.

Marta Jorge-Oliva1, Jan R T van Weering1,2, Wiep Scheper1,2

  • 1Department of Functional Genomics, Center for Neurogenomics and Cognitive Research, Vrije Universiteit Amsterdam, Amsterdam Neuroscience-Neurodegeneration, 1081 HV Amsterdam, The Netherlands.

International journal of molecular sciences
|July 14, 2023
PubMed
概括
此摘要是机器生成的。

神经元中的病理性tau聚合物触发了粒状水性退化体 (GVBs). 没有标记的丝,较短和随机分布,显著增加GVB积累,表明总体结构影响神经退行.

关键词:
塔乌·塔乌 (Tau Tau) 是一个聚合方式 聚合方式 聚合方式颗粒型水晶体退化体的发生.神经退行性疾病是一种神经退行性疾病.

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An In Vitro Model for Studying Tau Aggregation Using Lentiviral-mediated Transduction of Human Neurons
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科学领域:

  • 神经科学是一个神经科学.
  • 细胞生物学 细胞生物学
  • 病理学 病理学 病理学

背景情况:

  • 陶氏聚合是陶氏病变的关键因素,这是神经退行性疾病的一组.
  • 对病理的精确神经元反应及其与神经退行症的联系仍然不清楚.
  • 粒状水变性体 (GVBs) 是神经元特异性的结构,对tau病理有反应.

研究的目的:

  • 为了研究病理性tau组合如何影响神经元中的GVB积累.
  • 确定tau聚合物特性,如结构和定位在GVB形成中的作用.

主要方法:

  • 利用具有不同tau聚合特性的初级神经元模型.
  • 使用共聚焦显微镜,传输电子显微镜和自动化高含量显微镜进行定量分析.
  • 在表达GFP标记与未标记tau变异的神经元中比较GVB负载.

主要成果:

  • 根据GFP标记,病理性tau组件表现出明显的亚细胞定位,形态和超结构.
  • 在未标记的tau聚合模型中观察到GVB积累的增加.
  • 没有标记的tau聚合物具有较短的特征,在神经元体内随机分布的纤维.

结论:

  • 聚合物结构和/或亚细胞定位是GVB积累的关键决定因素.
  • 了解这些因素可能有助于了解病中神经退行症的机制.