Immune-modulatory genomic properties differentiate gut microbiota of infants with and without eczema
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Type
ArticleAuthors
Oh, SeungdaeYap, Gaik Chin
Hong, Pei-Ying

Huang, Chiung-Hui
Aw, Marion M.
Shek, Lynette Pei-Chi
Liu, Wen-Tso
Lee, Bee Wah
KAUST Department
Biological and Environmental Sciences and Engineering (BESE) DivisionEnvironmental Science and Engineering Program
Water Desalination and Reuse Research Center (WDRC)
Date
2017-10-19Permanent link to this record
http://hdl.handle.net/10754/625916
Metadata
Show full item recordAbstract
Gut microbiota play an important role in human immunological processes, potentially affecting allergic diseases such as eczema. The diversity and structure of gut microbiota in infants with eczema have been previously documented. This study aims to evaluate by comparative metagenomics differences in genetic content in gut microbiota of infants with eczema and their matched controls. Stools were collected at the age of one month old from twelve infants from an at risk birth cohort in a case control manner. Clinical follow up for atopic outcomes were carried out at the age of 12 and 24 months. Microbial genomic DNA were extracted from stool samples and used for shotgun sequencing. Comparative metagenomic analysis showed that immune-regulatory TCAAGCTTGA motifs were significantly enriched in the six healthy controls (C) communities compared to the six eczema subjects (E), with many encoded by Bifidobacterium (38% of the total motifs in the C communities). Draft genomes of five Bifidobacterium species populations (B. longum, B. bifidum, B. breve, B. dentium, and B. pseudocatenulatum) were recovered from metagenomic datasets. The B. longum BFN-121-2 genome encoded more TCAAGCTTGA motifs (4.2 copies per one million genome sequence) than other Bifidobacterium genomes. Additionally, the communities in the stool of controls (C) were also significantly enriched in functions associated with tetrapyrrole biosynthesis compared to those of eczema (E). Our results show distinct immune-modulatory genomic properties of gut microbiota in infants associated with eczema and provide new insights into potential role of gut microbiota in affecting human immune homeostasis.Citation
Oh S, Yap GC, Hong P-Y, Huang C-H, Aw MM, et al. (2017) Immune-modulatory genomic properties differentiate gut microbiota of infants with and without eczema. PLOS ONE 12: e0184955. Available: http://dx.doi.org/10.1371/journal.pone.0184955.Sponsors
This study was supported by MOH’s National Medical Research Council (NMRC/EDG/1057/2011 and NMRC/CIRG/1414/2014). Seungdae Oh was supported by the start-up grant from the University of Illinois at Urbana-Champaign (to WTL) and Nanyang Technological University (to SO), respectively.Publisher
Public Library of Science (PLoS)Journal
PLOS ONEPubMed ID
29049378ae974a485f413a2113503eed53cd6c53
10.1371/journal.pone.0184955
Scopus Count
Except where otherwise noted, this item's license is described as This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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