相关实验视频

Updated: Jan 10, 2026

Author Spotlight: Advancing the Analysis of Plasma Extracellular Vesicle Proteome for Cardiovascular Biomarker Studies

Author Spotlight: Advancing the Analysis of Plasma Extracellular Vesicle Proteome for Cardiovascular Biomarker Studies

Published on: January 31, 2025

血细胞外囊泡的表面蛋白质区分SARS-CoV-2和流感感染之间的区别

Wilhelm Bertrams¹, Fabienne K Roessler², Rikke Bæk³

¹Institute for Lung Research, Universities of Giessen and Marburg Lung Center (UGMLC), Philipps-Universität Marburg, Marburg, Germany.

|November 20, 2025

概括

白细胞计数,心率和小细胞外囊泡 (sEV) 表面标志物CD9可以帮助区分COVID-19和流感感染. 这一发现可能会导致改善呼吸道病毒病的诊断工具.

科学领域:

* 病毒学和免疫学
* 生物标志物发现发现
* 细胞外囊泡研究

背景情况:

*小细胞外囊泡 (sEVs) 与COVID-19和流感等病毒性呼吸道感染有关.
*sEV具有作为这些感染的诊断生物标志物或治疗点的潜力.
*了解sEV表面蛋白质差异对于区分这些疾病至关重要.

研究的目的:

*研究和区分COVID-19患者与流感患者中的血SEV表面蛋白质组.
* 确定临床和基于SEV的标记物,以区分COVID-19和流感.
* 在独立的患者队列中验证潜在的生物标志物.

主要方法:

* 在发现队列 (n=117) 中使用随机森林 (RF) 分类器对临床参数进行分类,以区分COVID-19和流感.
*使用33个抗体的EV阵列分析了血SEV,随后进行RF和随机深度首次搜索 (RDFS) 进行标记物识别.
*在一个独立的患者队列中,基于芯片的ExoView平台的验证结果.

主要成果:

*白细胞数量和心率是COVID-19和流感之间的关键临床区分因素.
*一个包括CD9,CD81和CD141在SEV上的小组区分了这两种感染.
* 在sEVs上增加了CD9丰度,特别是CD9/CD41a双阳性囊泡 (暗示血栓细胞起源),在流感患者中得到了验证.

结论:

*白细胞计数,心率和sEV表面标志物CD9可以区分COVID-19和流感.
* CD9阳性SEV,可能是血小板来源的,在流感患者中升高.
* 这些发现强调了sEVs作为呼吸道病毒感染的生物标志物的潜力.

关键词:

在 COVID-19 疫情中,细胞外囊泡中的细胞外囊泡.流感流感流感流感流感机器学习是机器学习.

更多相关视频

Author Spotlight: Advancing Antiviral Strategies Through Novel Immunocapture and Mass Spectrometry Techniques

Author Spotlight: Advancing Antiviral Strategies Through Novel Immunocapture and Mass Spectrometry Techniques

Published on: January 12, 2024

Isolation and Analysis of Traceable and Functionalized Extracellular Vesicles from the Plasma and Solid Tissues

Isolation and Analysis of Traceable and Functionalized Extracellular Vesicles from the Plasma and Solid Tissues

Published on: October 17, 2022

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...

Overview of Exosomes

Overview of Exosomes

Exosomes are stable, lipid bilayer-enclosed vesicles capable of crossing biological barriers. They can carry a wide range of molecules required for intercellular communication. Once exosomes are released from the cell where they originated, they enter a recipient cell through various pathways such as fusion, receptor-mediated endocytosis, macropinocytosis, and phagocytosis.
Stahl et al. discovered exosomes in 1983, but the exosomes were initially considered waste products released from the...

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...