Journal
FRONTIERS IN GENETICS
Volume 11, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fgene.2020.575592
Keywords
antimicrobial resistance genes; horizontal gene transfer; metagenomic analysis; resistome; Shotgun metagenome sequencing; database
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Funding
- Pro-Reitoria de Pesquisa da Universidade Federal do Para -PROPESP/UFPA
- Brazilian Federal Agency for the scientific research fellowship from FAPESPA
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Antimicrobial resistance is a significant global public health issue, primarily caused by pathogens acquiring resistance genes through horizontal gene transfer. High-throughput sequencing technologies and metagenomics have helped identify community antimicrobial resistance, with challenges in analyzing microbial diversity, functional gene analysis, and searching for relevant resistome databases.
Antimicrobial resistance is a major global public health problem, which develops when pathogens acquire antimicrobial resistance genes (ARGs), primarily through genetic recombination between commensal and pathogenic microbes. The resistome is a collection of all ARGs. In microorganisms, the primary method of ARG acquisition is horizontal gene transfer (HGT). Thus, understanding and identifying HGTs, can provide insight into the mechanisms of antimicrobial resistance transmission and dissemination. The use of high-throughput sequencing technologies has made the analysis of ARG sequences feasible and accessible. In particular, the metagenomic approach has facilitated the identification of community-based antimicrobial resistance. This approach is useful, as it allows access to the genomic data in an environmental sample without the need to isolate and culture microorganisms prior to analysis. Here, we aimed to reflect on the challenges of analyzing metagenomic data in the three main approaches for studying antimicrobial resistance: (i) analysis of microbial diversity, (ii) functional gene analysis, and (iii) searching the most complete and pertinent resistome databases.
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