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JoVE Journal
Immunology and Infection
腸管病原体の胆汁酸塩によるバイオ フィルム形成: 同定及び定量化の手法
腸管病原体の胆汁酸塩によるバイオ フィルム形成: 同定及び定量化の手法
JoVE Journal
Immunology and Infection
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JoVE Journal Immunology and Infection
Bile Salt-induced Biofilm Formation in Enteric Pathogens: Techniques for Identification and Quantification

腸管病原体の胆汁酸塩によるバイオ フィルム形成: 同定及び定量化の手法

Full Text
13,433 Views
10:05 min
May 6, 2018

DOI: 10.3791/57322-v

Kourtney P. Nickerson1,2, Christina S. Faherty1,2

1Mucosal Immunology and Biology Research Center, Division of Pediatric Gastroenterology and Nutrition,Massachusetts General Hospital, 2Department of Pediatrics,Harvard Medical School

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Overview

This protocol enables the analysis of bile salt-induced biofilm formation in enteric pathogens, focusing on adherence, extracellular polymeric substance matrix formation, and dispersion. It aims to characterize bacterial biofilms under conditions that mimic gastrointestinal transit.

Key Study Components

Area of Science

  • Microbiology
  • Pathogenesis
  • Biofilm Research

Background

  • Enteric bacterial pathogens can form biofilms in the gastrointestinal tract.
  • Bile salts present a harsh environment for bacterial survival.
  • Understanding biofilm formation is crucial for addressing bacterial pathogenesis.
  • The combined methods enhance the characterization of biofilm responses.

Purpose of Study

  • To determine the ability of enteric pathogens to form biofilms in bile salt conditions.
  • To support in-depth characterization of biofilm formation.
  • To address key questions in bacterial pathogenesis.

Methods Used

  • Assessment of adherence to surfaces.
  • Evaluation of extracellular polymeric substance matrix formation.
  • Analysis of biofilm dispersion.
  • Combined assays for comprehensive results.

Main Results

  • Detailed characterization of biofilm formation in response to bile salts.
  • Identification of critical steps for reproducibility in assays.
  • Insights into the survival mechanisms of enteric pathogens.
  • Support for the hypothesis regarding biofilm resilience in harsh environments.

Conclusions

  • The protocol provides a robust framework for studying biofilm dynamics.
  • Critical steps are essential for ensuring reproducibility.
  • The findings contribute to understanding bacterial survival in the gastrointestinal tract.

Frequently Asked Questions

What is the main goal of this protocol?
The main goal is to analyze bile salt-induced biofilm formation in enteric pathogens.
Why is biofilm formation important in enteric pathogens?
Biofilm formation is crucial for understanding how these pathogens survive in the gastrointestinal tract.
What are the key methods used in this study?
The study uses methods to assess adherence, matrix formation, and biofilm dispersion.
How does bile salt exposure affect biofilm formation?
Bile salt exposure influences the ability of enteric pathogens to form and maintain biofilms.
What challenges do newcomers face with this protocol?
Newcomers may struggle with reproducibility due to critical steps in the assay.
What is the significance of the combined assays?
The combined assays provide a comprehensive understanding of biofilm dynamics.

このプロトコルにより、腸管病原体の付着、細胞外高分子物質マトリックス形成を評価することによって細菌のバイオ フィルムの動的な性質をキャプチャする多面的なアプローチを使用しての胆汁酸塩によるバイオ フィルム形成を分析するリーダー分散。

このバイオフィルム形成および評価プロトコルの全体的な目標は、特に胃腸の通過と胆汁酸塩への曝露を模倣する条件下で、腸内細菌性病原体がバイオフィルムを形成する能力を決定することです。この方法は、腸管病原体が胃腸管の過酷な胆汁酸塩条件を生き残る能力など、細菌の病因分野における重要な質問に答えるのに役立ちます。この技術の主な利点は、3つのアッセイから得られた結果を組み合わせることで、各病原体の胆汁酸塩曝露に応じたバイオフィルム形成の詳細な特性評価がサポートされることです。

私たちは最初に、赤痢菌の胆汁酸塩誘発性バイオフィルム形成を完全に定量化する必要性を考慮して、組み合わせた方法のアイデアを思いつきました。一般に、この分析法を初めて使用する人は、アッセイの側面によって再現性が制限されるため、苦労します。そのため、再現性を確保するために、重要なステップに注意してください。

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