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Title: Machine Learning Leveraging Genomes from Metagenomes Identifies Influential Antibiotic Resistance Genes in the Infant Gut Microbiome

Journal Article · · mSystems
ORCiD logo [1];  [1];  [2];  [3]
  1. Univ. of California, Berkeley, CA (United States). Dept. of Plant and Microbial Biology
  2. Univ. of Pittsburgh, PA (United States). School of Medicine. Dept. of Surgery
  3. Univ. of California, Berkeley, CA (United States). Dept. of Earth and Planetary Sciences. Dept. of Environmental Science, Policy and Management

Antibiotic resistance in pathogens is extensively studied, and yet little is known about how antibiotic resistance genes of typical gut bacteria influence microbiome dynamics. Here, we leveraged genomes from metagenomes to investigate how genes of the premature infant gut resistome correspond to the ability of bacteria to survive under certain environmental and clinical conditions. We found that formula feeding impacts the resistome. Random forest models corroborated by statistical tests revealed that the gut resistome of formula-fed infants is enriched in class D beta-lactamase genes. Interestingly, Clostridium difficile strains harboring this gene are at higher abundance in formula-fed infants than C. difficile strains lacking this gene. Organisms with genes for major facilitator superfamily drug efflux pumps have higher replication rates under all conditions, even in the absence of antibiotic therapy. Using a machine learning approach, we identified genes that are predictive of an organism’s direction of change in relative abundance after administration of vancomycin and cephalosporin antibiotics. The most accurate results were obtained by reducing annotated genomic data to five principal components classified by boosted decision trees. Among the genes involved in predicting whether an organism increased in relative abundance after treatment are those that encode subclass B2 beta-lactamases and transcriptional regulators of vancomycin resistance. This demonstrates that machine learning applied to genome-resolved metagenomics data can identify key genes for survival after antibiotics treatment and predict how organisms in the gut microbiome will respond to antibiotic administration.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE; National Inst. of Health (NIH) (United States); Alfred P. Sloan Foundation (United States)
Grant/Contract Number:
AC02-05CH11231; RAI092531A; S10 OD018174; APSF-2012-10-05
OSTI ID:
1479372
Journal Information:
mSystems, Vol. 3, Issue 1; ISSN 2379-5077
Publisher:
American Society for MicrobiologyCopyright Statement
Country of Publication:
United States
Language:
English

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Maternal gut and breast milk microbiota affect infant gut antibiotic resistome and mobile genetic elements journal September 2018
Abundance and diversity of resistomes differ between healthy human oral cavities and gut journal February 2020
Persistent metagenomic signatures of early-life hospitalization and antibiotic treatment in the infant gut microbiota and resistome journal September 2019
Microbial transmission from mother to child: improving infant intestinal microbiota development by identifying the obstacles journal November 2019
Necrotizing enterocolitis is preceded by increased gut bacterial replication, Klebsiella , and fimbriae-encoding bacteria journal December 2019
Genome-resolved metagenomics of eukaryotic populations during early colonization of premature infants and in hospital rooms journal February 2019
Advancing functional and translational microbiome research using meta-omics approaches journal December 2019
Prediction of antibiotic resistance in Escherichia coli from large-scale pan-genome data journal December 2018
Detection of critical antibiotic resistance genes through routine microbiome surveillance journal March 2019
A Review and Tutorial of Machine Learning Methods for Microbiome Host Trait Prediction journal June 2019
Global Genetic Cartography of Urban Metagenomes and Anti-Microbial Resistance text January 2019
Microbial transmission from mother to child: improving infant intestinal microbiota development by identifying the obstacles text January 2020
Microbial transmission from mother to child: improving infant intestinal microbiota development by identifying the obstacles text January 2020