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Immunology and Infection
感染性単核球症の小児からの末梢血サンプル中の免疫細胞亜集団の分離
感染性単核球症の小児からの末梢血サンプル中の免疫細胞亜集団の分離
JoVE Journal
Immunology and Infection
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JoVE Journal Immunology and Infection
Separation of Immune Cell Subpopulations in Peripheral Blood Samples from Children with Infectious Mononucleosis

感染性単核球症の小児からの末梢血サンプル中の免疫細胞亜集団の分離

Full Text
2,941 Views
08:44 min
September 7, 2022

DOI: 10.3791/64212-v

Linlin Zhang1,2, Mengjia Liu1,2, Meng Zhang1,2, Junhong Ai1,2, Jiao Tian1,2, Ran Wang1,2, Zhengde Xie1,2

1Beijing Key Laboratory of Pediatric Respiratory Infectious Diseases, Key Laboratory of Major Diseases in Children, Ministry of Education, National Clinical Research Center for Respiratory Diseases, Laboratory of Infection and Virology, Beijing Pediatric Research Institute, Beijing Children's Hospital,Capital Medical University, National Center for Children's Health, 2Research Unit of Critical Infection in Children, 2019RU016,Chinese Academy of Medical Sciences

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Overview

This article describes a method that combines immunomagnetic beads and fluorescence-activated cell sorting to isolate and analyze specific immune cell subpopulations from peripheral blood mononuclear cells. The method allows for the purification and analysis of magnetic and fluorescently labeled cells.

Key Study Components

Area of Science

  • Immunology
  • Cell Biology
  • Flow Cytometry

Background

  • Peripheral blood mononuclear cells (PBMCs) are crucial for studying immune responses.
  • Understanding immune cell subpopulations can provide insights into various diseases.
  • EBV infection mechanisms can be better characterized through this method.
  • Isolation of specific cell types enhances the ability to study their functions and interactions.

Purpose of Study

  • To isolate and analyze defined immune cell subpopulations.
  • To expand understanding of immune responses in diseases.
  • To demonstrate the procedure for isolating PBMCs effectively.

Methods Used

  • Isolation of PBMCs using centrifugation.
  • Use of CD14 microbeads for monocyte isolation.
  • Fluorescence-activated cell sorting for analysis.
  • Washing and resuspending cells in a prepared buffer.

Main Results

  • Successful isolation of specific immune cell types.
  • Enhanced ability to analyze immune responses in individuals.
  • Demonstration of the method's effectiveness in a laboratory setting.
  • Potential applications in studying EBV infection mechanisms.

Conclusions

  • The method provides a reliable approach for isolating immune cells.
  • It can significantly contribute to research on immune responses.
  • Future studies can leverage this method to explore various diseases.

Frequently Asked Questions

What are PBMCs?
PBMCs, or peripheral blood mononuclear cells, are blood cells that have a round nucleus and include lymphocytes and monocytes.
How does fluorescence-activated cell sorting work?
Fluorescence-activated cell sorting (FACS) uses fluorescent markers to identify and sort specific cell types based on their characteristics.
What is the significance of isolating immune cell subpopulations?
Isolating immune cell subpopulations allows researchers to study their specific functions and roles in immune responses and diseases.
Can this method be applied to other types of cells?
Yes, the method can be adapted to isolate and analyze other cell types beyond immune cells.
What diseases can benefit from this research?
This research can benefit studies on infectious diseases, autoimmune disorders, and cancer.

免疫磁気ビーズと蛍光活性化細胞ソーティングを組み合わせて、末梢血単核球(単球、CD4+ T細胞、CD8+ T細胞、B細胞、およびナチュラルキラー細胞)の定義された免疫細胞サブポピュレーションを分離および分析する方法について説明します。この方法を使用すると、磁気および蛍光標識された細胞を精製および分析できます。

この方法により、IM患者の同じ疾患状態にある異なる免疫細胞の特性評価が可能になり、EBV感染のメカニズムの理解が広がります。手順を実演するのは、私たちの研究室の医師であるリンリン・チャンです。まず、1.5ミリリットルのマイクロ遠心チューブで事前に分離したPBMCを取り、室温で300 Gで10分間回転させます。

上清を捨て、調製した80マイクロリットルのバッファーで細胞を再懸濁します。次に、20マイクロリットルのCD14マイクロビーズを細胞懸濁液に加え、ピペッティングによりよく混合し、氷上でチューブを15分間インキュベートする。次に、1ミリリットルのバッファーを使用してPBMCを洗浄し、室温で10分間300 Gで遠心分離します。

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