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Dysfunctional gut microbiome networks in childhood IgE-mediated food allergy


Lee, KH and Guo, J and Song, Y and Ariff, A and O'Sullivan, M and Hales, B and Mullins, BJ and Zhang, G, Dysfunctional gut microbiome networks in childhood IgE-mediated food allergy, International Journal of Molecular Sciences, 22, (4) pp. 1-10. ISSN 1422-0067 (2021) [Refereed Article]

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Copyright: 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons 4.0 International (CC BY 4.0) license (

DOI: doi:10.3390/ijms22042079


The development of food allergy has been reported to be related with the changes in the gut microbiome, however the specific microbe associated with the pathogenesis of food allergy remains elusive. This study aimed to comprehensively characterize the gut microbiome and identify individual or group gut microbes relating to food-allergy using 16S rRNA gene sequencing with network analysis. Faecal samples were collected from children with IgE-mediated food allergies (n = 33) and without food allergy (n = 27). Gut microbiome was profiled by 16S rRNA gene sequencing. OTUs obtained from 16S rRNA gene sequencing were then used to construct a co-abundance network using Weighted Gene Co-expression Network Analysis (WGCNA) and mapped onto Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways. We identified a co-abundance network module to be positively correlated with IgE-mediated food allergy and this module was characterized by a hub taxon, namely Ruminococcaceae UCG-002 (phylum Firmicutes). Functional pathway analysis of all the gut microbiome showed enrichment of methane metabolism and glycerolipid metabolism in the gut microbiome of food-allergic children and enrichment of ubiquinone and other terpenoid-quinone biosynthesis in the gut microbiome of non-food allergic children. We concluded that Ruminococcaceae UCG-002 may play determinant roles in gut microbial community structure and function leading to the development of IgE-mediated food allergy.

Item Details

Item Type:Refereed Article
Keywords:16S rRNA gene sequencing, food allergy, microbiome, WGCNA, Ruminococcaceae
Research Division:Biological Sciences
Research Group:Biochemistry and cell biology
Research Field:Cell development, proliferation and death
Objective Division:Health
Objective Group:Clinical health
Objective Field:Diagnosis of human diseases and conditions
UTAS Author:Song, Y (Dr Yong Song)
ID Code:143417
Year Published:2021
Web of Science® Times Cited:13
Deposited By:Menzies Institute for Medical Research
Deposited On:2021-03-16
Last Modified:2021-11-18
Downloads:14 View Download Statistics

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