Birth mode is associated with earliest strain-conferred gut microbiome functions and immunostimulatory potential

Linda Wampach, Anna Heintz-Buschart, Joëlle V. Fritz, Javier Ramiro-Garcia, Janine Habier, Malte Herold, Shaman Narayanasamy, Anne Kaysen, Angela H. Hogan, Lutz Bindl, Jean Bottu, Rashi Halder, Conny Sjöqvist, Patrick May, Anders F. Andersson, Carine de Beaufort, Paul Wilmes*

*Corresponding author for this work

Research output: Contribution to journalArticleResearchpeer-review

121 Citations (Scopus)

Abstract

The rate of caesarean section delivery (CSD) is increasing worldwide. It remains unclear whether disruption of mother-to-neonate transmission of microbiota through CSD occurs and whether it affects human physiology. Here we perform metagenomic analysis of earliest gut microbial community structures and functions. We identify differences in encoded functions between microbiomes of vaginally delivered (VD) and CSD neonates. Several functional pathways are over-represented in VD neonates, including lipopolysaccharide (LPS) biosynthesis. We link these enriched functions to individual-specific strains, which are transmitted from mothers to neonates in case of VD. The stimulation of primary human immune cells with LPS isolated from early stool samples of VD neonates results in higher levels of tumour necrosis factor (TNF-α) and interleukin 18 (IL-18). Accordingly, the observed levels of TNF-α and IL-18 in neonatal blood plasma are higher after VD. Taken together, our results support that CSD disrupts mother-to-neonate transmission of specific microbial strains, linked functional repertoires and immune-stimulatory potential during a critical window for neonatal immune system priming.

Original languageEnglish
Article number5091
JournalNature Communications
Volume9
Issue number1
DOIs
Publication statusPublished - 1 Dec 2018

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