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Mother-to-Infant Microbial Transmission from Different Body Sites Shapes the Developing Infant Gut Microbiome

AuthorsFerretti, Pamela; Pasolli, Edoardo; Tett, Adrian; Asnicar, Francesco; Gorfer, Valentina; Fedi, Sabina; Armanini, Federica; Truong, Duy Tin; Manara, Serena; Zolfo, Moreno; Beghini, Francesco; Bertorelli, Roberto; de Sanctis, Veronica; Bariletti, Ilaria; Canto, Rosarita; Clementi,Rosanna; Cologna,Marina; Crifò, Tiziana; Cusumano, Giuseppina; Gottardi, Stefania; Innamorati, Claudia; Masè,Caterina; Postai,Daniela; Savoi, Daniela; Duranti, Sabrina; Lugli,Gabriele Andrea; Mancabelli, Leonardo; Turroni, Francesca; Ferrario, Chiara; Milani, Christian; Mangifesta, Marta; Anzalone, Rosaria; Viappiani, Alice; Yassour, Moran; Vlamakis, Hera; Xavier, Ramnik; Collado, María Carmen ; Koren,Omry; Tateo, Saverio; Soffiati,Massimo; Pedrotti, Anna; Ventura, Marco; Huttenhower, Curtis; Bork, Peer; Segata, Nicola
KeywordsInfant microbiome
Shotgun metagenomics
Strain-level profiling
Microbiome transmission
Issue Date11-Jul-2018
PublisherCell Press
CitationCell Host and Microbe 24 (1): 133-145.e5 (2018)
AbstractThe acquisition and development of the infant microbiome are key to establishing a healthy host-microbiome symbiosis. The maternal microbial reservoir is thought to play a crucial role in this process. However, the source and transmission routes of the infant pioneering microbes are poorly understood. To address this, we longitudinally sampled the microbiome of 25 mother-infant pairs across multiple body sites from birth up to 4 months postpartum. Strain-level metagenomic profiling showed a rapid influx of microbes at birth followed by strong selection during the first few days of life. Maternal skin and vaginal strains colonize only transiently, and the infant continues to acquire microbes from distinct maternal sources after birth. Maternal gut strains proved more persistent in the infant gut and ecologically better adapted than those acquired from other sources. Together, these data describe the mother-to-infant microbiome transmission routes that are integral in the development of the infant microbiome.
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