相关实验视频

Updated: Jun 25, 2025

Author Spotlight: Development of a Smartphone-Enhanced Paper-Based Device for Rapid Dengue NS1 Detection

Author Spotlight: Development of a Smartphone-Enhanced Paper-Based Device for Rapid Dengue NS1 Detection

Published on: January 26, 2024

感染后分泌的登革热病毒NS1主要是二次性,并与高密度脂蛋白复合

Bing Liang Alvin Chew^1,2, A N Qi Ngoh³, Wint Wint Phoo⁴

¹Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore.

|May 24, 2024

概括

研究人员发现了登革热病毒非结构蛋白1 (sNS1) 在其自然形式的结构. 这种感染衍生的sNS1 (isNS1) 与ApoA1和高密度脂蛋白 (HDL) 形成复合体,为登革热病原体提供了洞察力.

科学领域:

病毒学病毒学
结构生物学结构生物学
免疫学免疫学免疫学

背景情况:

严重的登革热与由分泌的非结构蛋白1 (sNS1) 引起的内皮功能障碍有关.
了解sNS1的结构对于开发登革热疫苗和治疗方法至关重要.

研究的目的:

确定感染衍生的sNS1 (isNS1) 的生物学相关结构.
研究isNS1在其本源生物环境中的分子相互作用.

主要方法:

从登革热病毒 (DENV) 感染的Vero细胞中净化isNS1的免疫 afinity.
电子显微镜 (cryo-EM) 用于确定结构复合物.
交叉连接质谱法用于识别蛋白质相互作用.

主要成果:

感染衍生的sNS1 (isNS1) 与ApoA1和高密度脂蛋白 (HDL) 形成一个约250kDa的复合体.
低温电磁探测揭示了NS1二元部分嵌入在HDL颗粒中.
质谱学证实了NS1和ApoA1之间的相互作用,特别是涉及NS1的翅膀和疏水区域.
从受感染的小鼠和人类患者的血清中观察到类似的sNS1复合体.

结论:

该研究报告了生物学上相关的sNS1的分子结构,与重组形式不同.
这种HDL结合的sNS1结构为严重登革热的分子病原体提供了新的见解.
这些发现可能有助于设计针对sNS1的新型登革热病毒治疗药物和疫苗.

关键词:

生物标志物生物标志物冰冷化EMEM可以使用.登革热感染的感染弗拉维病毒 (flavivirus) 是一种病毒.高密度脂蛋白是一种高密度脂蛋白.人类人类人类人类人类人类人类传染病是一种传染性疾病.微生物学的微生物.分子生物物理学分子生物物理学这里是鼠标鼠标鼠标鼠标鼠标鼠标.病变发生因子的病变因子结构生物学结构生物学

更多相关视频

Flow Virometry to Analyze Antigenic Spectra of Virions and Extracellular Vesicles

Flow Virometry to Analyze Antigenic Spectra of Virions and Extracellular Vesicles

Published on: January 25, 2017

A Murine Model of Dengue Virus-induced Acute Viral Encephalitis-like Disease

A Murine Model of Dengue Virus-induced Acute Viral Encephalitis-like Disease

Published on: April 28, 2019

相关概念视频

Leaky Scanning

Leaky Scanning

During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R...

Conjugated Proteins

Conjugated Proteins

Simple proteins and protein complexes contain only amino acids. In contrast, many other proteins, called conjugated proteins, covalently bond with non-protein moieties.
Nucleoproteins are protein complexes that contain nucleic acids, categorized as deoxyribonucleoproteins (DNPs) or ribonucleoproteins (RNPs) respectively. The nucleosome is a typical example of a DNP where nuclear DNA is associated with histone proteins. The major antigen for the Covid-19 virus SARS-CoV is an RNP that is critical...