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JoVE Journal
Immunology and Infection
Utilizzando Enhanced fluorescenza verde che esprimono proteine Escherichia Coli per valu...
Utilizzando Enhanced fluorescenza verde che esprimono proteine Escherichia Coli per valu...
JoVE Journal
Immunology and Infection
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JoVE Journal Immunology and Infection
Using Enhanced Green Fluorescence Protein-expressing Escherichia Coli to Assess Mouse Peritoneal Macrophage Phagocytosis

Utilizzando Enhanced fluorescenza verde che esprimono proteine Escherichia Coli per valutare la fagocitosi dei macrofagi peritoneali del Mouse

Full Text
8,078 Views
12:35 min
January 4, 2019

DOI: 10.3791/58751-v

Yu Zhang *1, Guan Wang*1, Jia Lu1, Li-ming Xu2, Jun-yu Xiong1

1Anesthesiology Department,The Second Hospital of Dalian Medical University, 2Scientific Research Center,The Second Hospital of Dalian Medical University

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Overview

This protocol demonstrates a simple and reproducible method to assess the phagocytosis ability of macrophages using EGFP-expressing Escherichia coli. The method can be completed within two hours and is widely used in studies of innate immune function.

Key Study Components

Area of Science

  • Immunology
  • Cell Biology
  • Microbiology

Background

  • Phagocytosis is a critical function of macrophages in the immune response.
  • Understanding macrophage function in different age groups can provide insights into immune aging.
  • Enhanced green fluorescence protein (EGFP) allows for easy visualization of phagocytosis.
  • This method can be applied to both young and aged mice to compare phagocytic abilities.

Purpose of Study

  • To isolate peritoneal macrophages from aged and young mice.
  • To assess and compare the phagocytic ability of macrophages from these two groups.
  • To provide a straightforward protocol for researchers studying innate immunity.

Methods Used

  • Isolation of peritoneal macrophages from mice.
  • Use of EGFP-expressing Escherichia coli for phagocytosis assessment.
  • Visualization of phagocytosis under a fluorescence microscope.
  • Comparison of phagocytic activity between young and aged macrophages.

Main Results

  • The protocol allows for quick and effective assessment of macrophage phagocytosis.
  • Differences in phagocytic ability between young and aged macrophages were observed.
  • The method is reproducible and can be utilized in various research settings.
  • Findings contribute to the understanding of innate immune function across different ages.

Conclusions

  • This protocol is a valuable tool for studying macrophage function.
  • It enhances the understanding of immune responses in aging.
  • Future studies can build on this method to explore other aspects of macrophage biology.

Frequently Asked Questions

What is the main focus of this protocol?
The protocol focuses on assessing the phagocytic ability of mouse peritoneal macrophages using EGFP-expressing Escherichia coli.
How long does the protocol take to complete?
The protocol can be completed within two hours.
What are the advantages of using EGFP-expressing bacteria?
EGFP-expressing bacteria allow for easy visualization of phagocytosis under fluorescence microscopy.
Can this method be used for other types of immune cells?
While this protocol is designed for macrophages, similar methods can be adapted for other immune cells.
What age groups of mice are compared in this study?
The study compares peritoneal macrophages from aged and young mice.
Why is it important to study macrophage function in aging?
Studying macrophage function in aging helps to understand changes in immune responses and potential implications for health in the elderly.

Qui, presentiamo un protocollo per valutare la fagocitosi dei macrofagi peritoneali del mouse usando una maggiore fluorescenza verde Escherichia coliche esprimono proteine.

Questo protocollo ha dimostrato un metodo semplice e producibile per valutare la capacità di fagocitosi dei macrofagi usando Escherichia coli che esprime EGFP. Ciao, mi chiamo Jun-Yu del Secondo Ospedale della Dalian Medical University. Oggi vi mostreremo un facile e visualizzeremo il modo di valutare la fagocitosi del macrofago che può essere facilmente eseguita entro due ore.

Questo metodo è stato ampiamente utilizzato nello studio della funzione immunitaria innata. Si ritiene che la funzione immunitaria innata sia rimasta intatta negli anziani. Quindi oggi isoliamo i macrofagi peritoneali dai topi anziani e giovani e vediamo la capacità fagocitica di questi due gruppi.

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