4.6 Review

Sample pre-treatment procedures for the omics analysis of human gut microbiota: Turning points, tips and tricks for gene sequencing and metabolomics

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ELSEVIER
DOI: 10.1016/j.jpba.2020.113592

关键词

Faeces; Gene sequencing; Metabolomics; Microbiome; Microbiota; Sample pre-treatment

资金

  1. Spanish Ministry of Science, Innovation and Universities [RTI2018-095166-B-I00]
  2. ISCIII [PI17/01087]
  3. FEDER [RD16/0006/0015]
  4. Spanish Society of Allergy and Clinical Immunology (SEAIC)

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The connection between gut microbiota and human health is becoming increasingly relevant and the number of groups working in this field is constantly growing. In this context, from high-throughput gene sequencing to metabolomics analysis, the omics technologies have contributed enormously to unveil the secret crosstalk between us and our microbes. All the omics technologies produce a great amount of information, and processing this information is time-consuming and expensive. For this reason, a correct experimental design and a careful pre-analytical planning are crucial. To study the human gut microbiota, faeces are the sample of choice. Faecal material is complex, and procedures for collecting and preserving faeces are not well-established. Furthermore, increasing evidence suggests that multiple confounding factors, such as antibiotics consumption, mode of delivery, diet, aging and several diseases and disorders can alter the composition and functionality of the microbiota. This review is focused on the discussion of critical general issues during the pre-analytical planning, from patient handling to faeces sampling, including collection procedures, transport, storage conditions and possible pre-treatments, which are critical for a successful research in omics with a special attention to metabolomics and gene sequencing. We also point out that the adoption of standard operating procedures in the field is needed to guarantee accuracy and reproducibility of results. (C) 2020 Elsevier B.V. All rights reserved.

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