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Related Experiment Video

Updated: Jun 20, 2025

Automated and High-throughput Microbial Monoclonal Cultivation and Picking Using the Single-cell Microliter-droplet Culture Omics System
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Optimised human stool sample collection for multi-omic microbiota analysis.

Matthew R Gemmell1, Thisun Jayawardana2, Sabrina Koentgen2

  • 1Centre for Genomic Research, University of Liverpool, Liverpool, UK.

Scientific Reports
|July 22, 2024
PubMed
Summary
This summary is machine-generated.

Preserving stool samples is crucial for gut microbiome research. PSP and RNAlater buffers best maintain microbial and metabolic profiles, closely matching frozen samples for accurate microbiome studies.

Keywords:
Gut microbiotaMulti-omic analysisSample preservationStool sample integrity

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Area of Science:

  • Microbiology
  • Metabolomics
  • Genomics

Background:

  • Accurate gut microbiota analysis requires preserving stool sample integrity.
  • Self-collection and variable handling introduce challenges in microbiome studies.
  • Microbial community composition and metabolic function are key indicators of health and disease.

Purpose of the Study:

  • To evaluate the effectiveness of different stool sample collection/preservation buffers.
  • To assess the impact of storage temperature and time on sample integrity.
  • To identify optimal methods for preserving human stool samples for microbiome research.

Main Methods:

  • Tested three stool sample collection/preservation buffers.
  • Stored samples at room temperature (20°C), 4°C, and -80°C for up to three days.
  • Compared 16S rRNA sequencing and short-chain fatty acid profiles against immediately frozen samples.

Main Results:

  • Buffer choice significantly impacted microbial community and metabolomic profiles.
  • PSP and RNAlater buffers most accurately preserved microbial diversity compared to frozen samples.
  • Storage temperature and duration influenced sample integrity, but buffer choice was paramount.

Conclusions:

  • PSP and RNAlater buffers are recommended for human stool microbiome studies.
  • These buffers ensure the highest fidelity in microbial community and metabolic profiles.
  • Prioritizing these preservation methods enhances the reliability of gut microbiome research.