相关实验视频

Updated: Feb 26, 2026

Genetic Analysis of Hereditary Transthyretin Ala97Ser Related Amyloidosis

Genetic Analysis of Hereditary Transthyretin Ala97Ser Related Amyloidosis

Published on: June 9, 2018

在三种神经病相关的ATTR变体中的心肌纤维中共享的粉样

Maria Del Carmen Fernandez-Ramirez¹, Shumaila Afrin¹, Binh An Nguyen¹

¹Center for Alzheimer's and Neurodegenerative Diseases, Department of Biophysics, Peter O'Donnell Jr Brain Institute, University of Texas Southwestern Medical Center (UTSW), Dallas, TX, USA.

Structure (London, England : 1993)

|February 24, 2026

概括

在ATTR氨基化症中,涉及到过胺氨基酸的积累. 尽管突变和症状各异,但特定的变体具有共同的粉样核,有助于开发诊断工具.

科学领域:

生物化学生化学
结构生物学结构生物学
医学科学医学科学医学科学

背景情况:

ATTR粉样性粉症源于甲氨酸的积累,导致多器官功能障碍.
疾病病理和透率各不相同,与粉样蛋白结构的联系不清楚.
与神经病相关的变体可以表现出多态纤维,与典型的ATTR纤维不同.

研究的目的:

为了研究神经病症症状,特异突变和ATTR氨基粉症中的粉样蛋白结构多样性之间的关系.
阐明ATTR氨基粉症患者可变临床表现的结构基础.

主要方法:

使用冷电子显微镜 (cryo-EM) 来确定ex vivo纤维结构.
分析的重点是ATTR氨基粉症变体ATTRv-P24S,ATTRv-A25S和ATTRv-D38A.

主要成果:

尽管有不同的突变和临床表型,但研究的ATTRv变体具有共同的粉样核.
这种共同的核心结构以前在野生类型的ATTR (ATTRwt) 和心脏ATTRv.中被确定.
在呈现神经病变和各种临床表现的变体中观察到结构一致性.

结论:

研究结果显示,在各种ATTR粉样性粉症变体中,包括与神经病变相关的ATTR粉样性粉症变体中,粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性粉样性.
这种结构一致性对于开发用于ATTR粉样化症广泛的结构导向诊断工具至关重要.
了解共享的结构基础可以为针对ATTR氨基粉症的治疗策略提供信息.

关键词:

在ATTRvvvv 氨基化物氨基化物氨基粉症是什么?心肌病性心脏病 - 心肌病性心脏病冰冷化EMEM可以使用.多形态主义的多态主义.多性神经病症多性神经病症.转胺素是什么意思西氨基化物 transthyretin.

更多相关视频

Rapid Generation of Amyloid from Native Proteins In vitro

Rapid Generation of Amyloid from Native Proteins In vitro

Published on: December 5, 2013

Novel Atomic Force Microscopy Based Biopanning for Isolation of Morphology Specific Reagents against TDP-43 Variants in Amyotrophic Lateral Sclerosis

Novel Atomic Force Microscopy Based Biopanning for Isolation of Morphology Specific Reagents against TDP-43 Variants in Amyotrophic Lateral Sclerosis

Published on: February 12, 2015

相关概念视频

Amyloid Fibrils

Amyloid Fibrils

Amyloid fibrils are aggregates of misfolded proteins. Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils.
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...

Amyloid Fibrils

Amyloid Fibrils

Fibril-associated Collagen

Fibril-associated Collagen

Fibril-associated collagens are a type of collagens present in the extracellular matrix with interrupted triple helices or FACIT (Fibril-associated collagens interrupted triple-helices). FACIT help connect and attach the collagen fibrils with each other as well as with other proteins of the extracellular matrix.
For example, the type II collagen fibrils in cartilage have covalently bound type IX fibril-associated collagens at regular intervals. Other types of fibril-associated collagens are...