Human milk bacteria assembled into functionally distinct synthetic communities in infant formula differently affect intestinal physiology and microbiota in neonatal mini-pigletsOriginal paper
Karen Pendergrass is a microbiome researcher specializing in microbiome-targeted interventions (MBTIs). She systematically analyzes scientific literature to identify microbial patterns, develop hypotheses, and validate interventions. As the founder of the Microbiome Signatures Database, she bridges microbiome research with clinical practice. In 2012, based on her own investigative research, she became the first documented case of FMT for Celiac Disease, four years before the first published case study.
Read MoreWhat was studied?
Researchers tested whether human milk bacteria, assembled into two synthetic communities (SynComs) with anti-inflammatory (AI) or high immunomodulatory (HI) properties, affect infant gut development when added to formula.
How was it studied?
Neonatal mini-piglets received unsupplemented formula (CTRL), formula with AI SynCom, or formula with HI SynCom, compared against sow milk-fed piglets over 24 days. Fecal samples were taken on day 8, and ileal, colonic, and fecal samples on day 24.
What did they find?
The AI and HI SynComs altered gut genera differently, mostly within Bacillota. HI piglets showed markedly higher fecal secretory IgA than CTRL or AI groups at day 8. Both SynComs modestly increased ileal and colonic expression of inflammation, antioxidant, and Treg-related genes (IL6, TNFaR1, SOD2, SOCS3, FOXP3), and SynCom bacteria correlated with gut genera and physiological measures.
Why it matters
The findings suggest the specific functional profile of human milk bacteria, not just their presence, shapes an infant's gut microbiota and immune development when delivered through formula.