相关实验视频

Updated: May 10, 2026

Legionella pneumophila Outer Membrane Vesicles: Isolation and Analysis of Their Pro-inflammatory Potential on Macrophages

Legionella pneumophila Outer Membrane Vesicles: Isolation and Analysis of Their Pro-inflammatory Potential on Macrophages

Published on: February 22, 2017

来自Corynebacterium glutamicum的糖的结构特征和免疫激活能力在RAW264.7细胞中

Xiaoying Wang¹, Shuzhen Li¹, Aijuan Zheng¹

¹Key Laboratory of Feed Biotechnology of the Ministry of Agriculture and Rural Affairs, Risk Assessment Laboratory of Animal Product Quality Safety Feed Source Factors of the Ministry of Agriculture and Rural Affairs, Institute of Feed Research of Chinese Academy of Agricultural Sciences, Beijing 100081, China.

International journal of molecular sciences

|January 11, 2025

概括

来自Corynebacterium glutamicum的丁糖素通过激活关键信号通路来增强免疫反应. 这项研究突出了其作为免疫辅助剂的潜力,并为发酵副产品提供了有价值的用途.

科学领域:

微生物学和免疫学
生物化学生物化学

背景情况:

糖 (PGN) 是细菌细胞壁的关键组成部分,具有已知的免疫调节特性.
在氨基酸发酵中使用的细菌Corynebacterium glutamicum产生PGN作为副产品.
用发酵副产品用于新型应用是一个越来越感兴趣的领域.

研究的目的:

为了从Corynebacterium glutamicum中提取和描述类甘油 (PGN).
在细胞模型中研究PGN的免疫激活作用.
探索PGN作为免疫辅助剂和利用发酵副产品的方法的潜力.

主要方法:

使用三酸 (TCA) 方法提取丁糖.
通过SDS-PAGE,氨基酸分析,FTIR和MALDI-TOF/TOF MS.进行结构性表征.
在RAW264.7细胞中评估免疫反应,包括细胞因子分泌,NO/ROS产生和基因表达分析 (RNA测序,KEGG通路分析).

主要成果:

成功提取了PGN,其结构被证实为NAG-(β-1,4-) -NAM-l-Ala-d-Glu-l-Lis-d-Ala.
PGN显著增加了氧化 (NO),活性氧物种 (ROS),TNF-α和IL-1β分泌.
PGN激活了NF-κB和MAPK信号通路,包括NOD1受体和下游信号分子,如MyD88和RIP2.

结论:

来自Corynebacterium glutamicum的PGN具有强大的免疫激活特性.
PGN通过NF-κB和MAPK途径刺激先天性免疫反应,表明其作为免疫辅助剂的潜力.
这项研究为利用氨基酸发酵副产品提供了一种可持续的方法.

关键词:

在Corynebacterium glutamicum的研究中,我们发现在 RAW264.7 中,单元是 RAW264.7 .细胞因子细胞因子免疫激活系统的激活酸甘油可以是酸甘油

更多相关视频

Opsono-Adherence Assay to Evaluate Functional Antibodies in Vaccine Development Against Bacillus anthracis and Other Encapsulated Pathogens

Opsono-Adherence Assay to Evaluate Functional Antibodies in Vaccine Development Against Bacillus anthracis and Other Encapsulated Pathogens

Published on: May 19, 2020

Semi-Quantitative Analysis of Peptidoglycan by Liquid Chromatography Mass Spectrometry and Bioinformatics

Semi-Quantitative Analysis of Peptidoglycan by Liquid Chromatography Mass Spectrometry and Bioinformatics

Published on: October 13, 2020

相关概念视频

Defense Against Bacterial Pathogens

Defense Against Bacterial Pathogens

The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...