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Progress on the molecular mechanism and probiotic effect of B. longum subsp. infantis subspecies using HMOs

Yu-Han CHENLi QiaoHui2,Li Yan2,Su Qian2,Huanxin GUO2,Bo-Fan DUAN2,[中]孟祥晨 [英]MENG Xiang-Chen   

  • Received:2023-05-21 Revised:2024-03-10 Online:2024-05-15 Published:2024-04-30
  • Contact: [中]孟祥晨 [英]MENG Xiang-Chen E-mail:xchmeng@163.com

Abstract: Abstract: Human milk is the most important source of nutrition in early infancy which can meet all the nutritional needs in the first 6 months of birth, and it also contains many bioactive substances that can regulate the intestinal flora, promote the development of the immune system, and enhance the intestinal barrier. Human milk oligosaccharides (HMOs) are one of the active substances in human milk. They cannot be directly digested and absorbed by infants but can be used as a prebiotic to stimulate the establishment and evolution of intestinal flora. The Bifidobacterium longum subsp. infantis is the dominant microorganism in the gut of breastfed infants, which has almost all the gene clusters required for metabolizing the main HMOs, and its interaction with HMOs plays a key role in early infant intestinal health. This review summarizes the composition and structure of HMOs, describes the way B. longum subsp. infantis utilizes HMOs, and summarizes the probiotic effects of B. longum subsp. infantis metabolizing HMOs in infants.

Key words: Human milk oligosaccharides, B. longum subsp. infantis, Metabolites, Utilization mechanism, probiotic function

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