相关实验视频

Updated: Feb 13, 2026

Selection of Aptamers for Amyloid β-Protein, the Causative Agent of Alzheimer's Disease

Selection of Aptamers for Amyloid β-Protein, the Causative Agent of Alzheimer's Disease

Published on: May 13, 2010

来自金科的向蛋白质降解剂,以减轻氨基酸β诱导的神经毒性

Bamaprasad Dutta^1,2, Shining Loo^1,3, Antony Kam^1,4

¹School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551, Singapore.

|February 12, 2026

概括

来自金科比洛巴坚果的一种新,β-金科提德,通过选择性自来向有毒的粉样蛋白进行降解. 这一发现为阿尔茨海默氏症等神经退行性疾病提供了有前途的治疗策略.

科学领域:

生物化学生物化学
神经科学是一个神经科学.
细胞生物学细胞生物学

背景情况:

自-溶酶体通路降解细胞废物,包括有毒蛋白质.
粉样蛋白β (Aβ) 积累会引起神经毒性,并与阿尔茨海默病 (AD) 有关.
目前还缺少一种天然产品衍生的,针对自介导降解的粉样蛋白.

研究的目的:

发现和描述一种能够诱导粉样蛋白蛋白降解选择性自的新.
评估该对抗Aβ诱导的神经毒性的治疗潜力.

主要方法:

从金科比洛巴坚果中发现β-金科提德.
描述β-gB1的结构和稳定性.
在SH-SY5Y神经细胞模型中评估细胞透和神经保护作用.
对Aβ积累,基因表达和自流动的分析.

主要成果:

确定了β-gB1,一种具有LC3相互作用区域 (LIR) 动机的20余.
β-gB1通过能量依赖性内细胞突变证明了细胞透.
保护β-gB1免受Aβ诱导的神经毒性,减少Aβ积累,并逆转AD相关的基因表达变化.
β-gB1通过选择性自增强了Aβ总体的清除,维持了细胞平衡.

结论:

β-ginkgotide 是一种基于氨酸丰富 (CRP) 的第一类向蛋白质降解剂.
在AD和其他神经退行性疾病中,β-gB1显示出作为神经保护性治疗药物的显著潜力,用于控制AD和其他神经退行性疾病中Aβ诱导的神经毒性.

更多相关视频

Assaying β-amyloid Toxicity using a Transgenic C. elegans Model

Assaying β-amyloid Toxicity using a Transgenic C. elegans Model

Published on: October 9, 2010

Nerve Excitability Assessment in Chemotherapy-induced Neurotoxicity

Nerve Excitability Assessment in Chemotherapy-induced Neurotoxicity

Published on: April 26, 2012

相关概念视频

Regulated Protein Degradation

Regulated Protein Degradation

It is vital to regulate the activity of enzymatic as well as non-enzymatic proteins inside the cell. This can be achieved either through creating a balance between their rate of synthesis and degradation or regulating the intrinsic activity of the protein. Both these regulation mechanisms play an essential role in the normal functioning of cells.
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...

Regulated Protein Degradation

Regulated Protein Degradation

Proteins: From Genes to Degradation

Proteins: From Genes to Degradation

Within a biological system, the DNA encodes the RNA, and the nucleotide sequence in the RNA further defines the amino acid sequence in the protein. This is referred to as “The Central Dogma of Molecular Biology” - a term coined by Francis Crick. Central dogma is a firm principle in biology that defines the flow of genetic information within any life form. The two fundamental steps in central dogma are - transcription and translation.
Transcription is the synthesis of RNA...

Proteins: From Genes to Degradation

Proteins: From Genes to Degradation

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