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2018 ; 8
(1
): 5143
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Methodology challenges in studying human gut microbiota - effects of collection,
storage, DNA extraction and next generation sequencing technologies
#MMPMID29572539
Panek M
; ?ip?i? Paljetak H
; Bare?i? A
; Peri? M
; Matija?i? M
; Lojki? I
; Vrane?i? Bender D
; Krznari? ?
; Verbanac D
Sci Rep
2018[Mar]; 8
(1
): 5143
PMID29572539
show ga
The information on microbiota composition in the human gastrointestinal tract
predominantly originates from the analyses of human faeces by application of next
generation sequencing (NGS). However, the detected composition of the faecal
bacterial community can be affected by various factors including experimental
design and procedures. This study evaluated the performance of different
protocols for collection and storage of faecal samples (native and OMNIgene.GUT
system) and bacterial DNA extraction (MP Biomedicals, QIAGEN and MO BIO kits),
using two NGS platforms for 16S rRNA gene sequencing (Ilumina MiSeq and Ion
Torrent PGM). OMNIgene.GUT proved as a reliable and convenient system for
collection and storage of faecal samples although favouring Sutterella genus. MP
provided superior DNA yield and quality, MO BIO depleted Gram positive organisms
while using QIAGEN with OMNIgene.GUT resulted in greatest variability compared to
other two kits. MiSeq and IT platforms in their supplier recommended setups
provided comparable reproducibility of donor faecal microbiota. The differences
included higher diversity observed with MiSeq and increased capacity of MiSeq to
detect Akkermansia muciniphila, [Odoribacteraceae], Erysipelotrichaceae and
Ruminococcaceae (primarily Faecalibacterium prausnitzii). The results of our
study could assist the investigators using NGS technologies to make informed
decisions on appropriate tools for their experimental pipelines.