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Microbial Genomics logo Microbial Genomics

Volume 11, Issue 2

Genomic insights into the beneficial potential of and strains isolated from Cameroonian infants Open Access

Abstract

A healthy early-life gut microbiota plays an important role in maintaining immediate and long-term health. Perturbations, particularly in low- to middle-income communities, are associated with increased infection risk. Thus, a promising avenue for restoring a healthy infant microbiota is to select key beneficial bacterial candidates from underexplored microbiomes for developing new probiotic-based therapies. This study aimed to recover bifidobacteria and lactic acid bacteria from the faeces of healthy Cameroonian infants and unravel the genetic basis of their beneficial properties. Faecal samples were collected from 26 infants aged 0–5 months recruited in Dschang (Cameroon). Recovered bacterial isolates were subjected to whole-genome sequencing and analysis to assess their potential for carbohydrate utilization, their antimicrobial capacities, host-adaptation capabilities and their safety. From the range of infant-associated and strains identified, species were found to harbour putative gene clusters implicated in human milk oligosaccharide metabolism. Genes linked to the production of antimicrobial peptides such as class IV lanthipeptides were found in , while those implicated in biosynthesis of cytolysins, enterolysins, enterocins and propeptins, among others, were identified in enterococci. Bifidobacterial isolates did not contain genes associated with virulence; however, we detected the presence of putative tetracycline resistance genes in several strains belonging to subsp. and subsp. . Among the enterococci, PM10 did not carry any genes associated with antimicrobial resistance or virulence. The latter, together with all the strains, also encoded several putative adaptive and stress-response-related genes, suggesting robust gastroinstestinal tract colonization potential. This work provides the first genomic characterization of and isolates from Cameroonian infants. Several strains showed the genomic potential to confer beneficial properties. Further phenotypic and clinical investigations are needed to confirm their suitability as customized probiotics.

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): bifidobacteria , Enterococcus , functional genomics , probiotics , safety and whole-genome sequencing
Funding
This study was supported by the:
  • Wellcome Trust (Award 220876/Z/20/Z)
    • Principal Award Recipient: J. HallLindsay
© 2025 The Authors
  • This is an open-access article distributed under the terms of the Creative Commons Attribution License.
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/content/journal/mgen/10.1099/mgen.0.001354
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Genomic insights into the beneficial potential of Bifidobacterium and Enterococcus strains isolated from Cameroonian infants
M Gen 11, 001354 (2025); https://doi.org/10.1099/mgen.0.001354
/content/journal/mgen/10.1099/mgen.0.001354
/content/journal/mgen/10.1099/mgen.0.001354
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