Tick Microbiome Characterization by Next-Generation 16S rRNA Amplicon Sequencing

Lisa Couper; Andrea Swei

doi:10.3791/58239

JoVE Journal
Biology

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JoVE Journal Biology

Tick Microbiome Characterization by Next-Generation 16S rRNA Amplicon Sequencing

次世代の 16S rRNA 増幅シーケンスによる目盛りマイクロバイ評価

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07:21 min

August 25, 2018

DOI: 10.3791/58239-v

Lisa Couper¹, Andrea Swei¹

¹Department of Biology,San Francisco State University

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Overview

This study presents a next-generation sequencing protocol for 16S rRNA sequencing aimed at identifying and characterizing microbial communities within vectors, particularly focusing on ticks. The protocol facilitates high replication and resolution, enhancing accurate characterization of vector microbiomes under diverse ecological conditions.

Key Study Components

Research Area

Vector-borne disease ecology
Microbial community dynamics
Pathogen interactions with the microbiome

Background

The role of vector microbiomes in disease ecology is poorly understood.
Current methods lack comprehensive resources for microbiome sequencing.
Microbial contaminants can complicate analysis in 16S rRNA sequencing.

Methods Used

DNA extraction, amplification, and barcoding of samples
Tick collection and surface contamination removal
High-throughput sequencing and bioinformatics analysis

Main Results

Successful identification of microbial taxa associated with ticks
Enhanced methodological transparency for microbiome characterization
Validation of sterility techniques to mitigate contamination

Conclusions

This methodology provides a robust framework for studying vector microbiomes.
It contributes valuable insights into the ecology of vector-borne diseases.

Frequently Asked Questions

What is the significance of 16S rRNA sequencing in this study?

16S rRNA sequencing allows for detailed identification of microbial communities in vectors, aiding in understanding their ecological roles.

How can this protocol improve research in vector-borne diseases?

By providing a reliable method for characterizing microbiomes, this protocol enhances understanding of pathogenesis in vector-host interactions.

What steps are critical in maintaining sterile conditions?

Implementing sterile techniques during DNA extraction and PCR is crucial to minimize contamination risks.

Are there any potential drawbacks to this sequencing method?

Contamination can still be a concern if sterile procedures are not diligently followed.

How does this method handle low DNA concentrations?

Amplicon PCR in triplicate can be performed to reduce amplification bias in samples with low DNA yields.

Why is visualization of PCR products important?

It confirms successful amplification and ensures that the expected product sizes were generated.

What additional analyses can be performed after sequencing?

Histological staining can be employed to investigate the localization of microbes within the vector.

16S rRNA 配列ベクトル内で微生物の同定と解析を可能にするための次世代シーケンスプロトコルをご紹介します。このメソッドには、DNA 抽出、増幅し、pcr 法によって、フローセルとバイオインフォマティクスをシーケンス処理シーケンスデータを系統情報に合わせてサンプルのバーコードが含まれます。

この方法は、ベクターマイクロバイオームが病原体のダイナミクスにどのような役割を果たしているのか、ベクターマイクロバイオームはどのように形成され、変化するのかなど、ベクター媒介性疾患生態学の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、高い複製、高い分解能、同定が可能であり、さまざまな生態学的および環境条件下でベクターマイクロバイオームを正確に特性評価できることです。マイクロバイオームシーケンシングのセットアップ手順は習得が難しく、利用可能な製品や手法は多数ありますが、これらの手順を学習するための利用可能なリソースが少ないため、この方法を視覚的にデモンストレーションすることが重要です。

この手順は、テキストプロトコルで説明されているように、ティックコレクションから開始します。ダニから表面の汚染物質を除去するには、500マイクロリットルの過酸化水素を追加し、15秒間ボルテックスします。この洗浄を70%エタノールで繰り返し、次に再蒸留水で洗浄します。

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