在GBA1 E365K,N409S和L483P异构体突变载体中的血葡萄糖素
Julian Agin-Liebes1, Alexander Haimovich1, Rachel Griep1
1Department of Neurology, Columbia University Irving Medical Center, New York, USA.
概括
在携带GBA1变种N409S,E365K和L483P的携带者中,血葡萄糖素水平升高. 这一发现证实了E365K载体的葡萄糖大脑酶功能降低,无论帕金森病的状态如何.
科学领域:
- 遗传学和分子生物学
- 神经退行性疾病 神经退行性疾病
- 生物化学 生化学
背景情况:
- 该GBA1基因编码的葡萄糖脑糖酶,一个 lysosomal 酶. E365K变种与帕金森病 (PD) 有关,但与高希病无关.
- 以前的研究表明,GBA1 N409S载体的血葡萄糖素水平升高,但E365K载体的水平尚不清楚.
研究的目的:
- 量化GBA1变种N409S,E365K和L483P的异构体载体中的血葡萄糖素水平.
- 为了确定这些水平是否在携带帕金森病和没有帕金森病的携带者之间有所不同.
主要方法:
- 分析了112名参与者的血样本.
- 液体染色学-双重质谱法被用于针对性定量葡萄糖素.
主要成果:
- 与非载体 (0.45 ng/mL) 相比,N409S (0.59 ng/mL),E365K (0.59 ng/mL) 和L483P (0.63 ng/mL) 的载体中的血葡萄糖化的度显著更高.
- 观察到的升高是独立于帕金森病的状态.
结论:
- 在E365K载体中血葡萄糖素的升高证实了降低的葡萄糖大脑酶功能.
- 这些发现强调了血葡萄糖素作为GBA1相关酶功能障碍的生物标志物的实用性.
相关概念视频
12:04Engineering Oncogenic Heterozygous Gain-of-Function Mutations in Human Hematopoietic Stem and Progenitor Cells
4.8K
Novel strategies to faithfully model somatic mutations in hematopoietic stem and progenitor cells (HSPCs) are necessary to better study hematopoietic stem cell biology and hematological malignancies. Here, a protocol to model heterozygous gain-of-function mutations in HSPCs by combining the use of CRISPR/Cas9 and dual rAAV donor transduction is...
4.8K
Electron Carriers
91.4K
Electron carriers can be thought of as electron shuttles. These compounds can easily accept electrons (i.e., be reduced) or lose them (i.e., be oxidized). They play an essential role in energy production because cellular respiration is contingent on the flow of electrons.
Over the many stages of cellular respiration, glucose breaks down into carbon dioxide and water. Electron carriers pick up electrons lost by glucose in these reactions, temporarily storing and releasing them into the electron...
Over the many stages of cellular respiration, glucose breaks down into carbon dioxide and water. Electron carriers pick up electrons lost by glucose in these reactions, temporarily storing and releasing them into the electron...
91.4K
Mutations
94.4K
Overview
94.4K
Mutations
43.2K
Mutations are changes in the sequence of DNA. These changes can occur spontaneously or they can be induced by exposure to environmental factors. Mutations can be characterized in a number of different ways: whether and how they alter the amino acid sequence of the protein, whether they occur over a small or large area of DNA, and whether they occur in somatic cells or germline cells.
Chromosomal Alterations Are Large-Scale Mutations
While point mutations are changes in a single nucleotide in...
Chromosomal Alterations Are Large-Scale Mutations
While point mutations are changes in a single nucleotide in...
43.2K
10:16Targeted Plasma Membrane Delivery of a Hydrophobic Cargo Encapsulated in a Liquid Crystal Nanoparticle Carrier
8.0K
A liquid crystal nanoparticle (LCNP) nanocarrier is exploited as a vehicle for the controlled delivery of a hydrophobic cargo to the plasma membrane of living...
8.0K
Viral Mutations
39.7K
A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material...
39.7K

