ArticlePloS one2012
High density microarray analysis reveals new insights into genetic footprints of Listeria monocytogenes strains involved in listeriosis outbreaks.
Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed.
- Review
- Current Trends in Foodborne Human Listeriosis.Food safety (Tokyo, Japan) · 2018Review
- Molecular Tools To Study Preharvest Food Safety Challenges.Microbiology spectrum · 2018Review
- Use of a Pan-Genomic DNA Microarray in Determination of the Phylogenetic Relatedness among Cronobacter spp. and Its Use as a Data Mining Tool to Understand Cronobacter Biology.Microarrays (Basel, Switzerland) · 2017Review
- Article
- Article
- Whole-Genome Sequencing Identifies an Atypical Listeria monocytogenes Strain Isolated from Pet Foods.Genome announcements · 2014Article
- Genomic characterization of novel Listeria monocytogenes serotype 4b variant strains.PloS one · 2014Article
- Animal models for oral transmission of Listeria monocytogenes.Frontiers in cellular and infection microbiology · 2014Review
- Genome Sequences of Listeria monocytogenes Serotype 4b Variant Strains Isolated from Clinical and Environmental Sources.Genome announcements · 2013Article
- Ruminant rhombencephalitis-associated Listeria monocytogenes strains constitute a genetically homogeneous group related to human outbreak strains.Applied and environmental microbiology · 2013Article
- Molecular approaches to the identification of pathogenic and nonpathogenic listeriae.Microbiology insights · 2013Review
- Article
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Authors and funding
4 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Listeria monocytogenes, a foodborne bacterial pathogen, causes invasive and febrile gastroenteritis forms of listeriosis in humans. Both invasive and febrile gastroenteritis listeriosis is caused mostly by serotypes 1/2a, 1/2b and 4b strains. The outbreak strains of serotype 1/2a and 4b could be further classified into several epidemic clones but the genetic bases for the diverse pathophysiology have been unsuccessful. DNA microarray provides an important tool to scan the entire genome for genetic signatures that may distinguish the L. monocytogenes strains belonging to different outbreaks. We have designed a pan-genomic microarray chip (Listeria GeneChip) containing sequences from 24 L. monocytogenes strains. The chip was designed to identify the presence/absence of genomic sequences, analyze transcription profiles and identify SNPs. Analysis of the genomic profiles of 38 outbreak strains representing 1/2a, 1/2b and 4b serotypes, revealed that the strains formed distinct genetic clusters adhering to their serotypes and epidemic clone types. Although serologically 1/2a and 1/b strains share common antigenic markers microarray analysis revealed that 1/2a strains are further apart from the closely related 1/2b and 4b strains. Within any given serotype and epidemic clone type the febrile gastroenteritis and invasive strains can be further distinguished based on several genetic markers including large numbers of phage genome, and intergenic sequences. Our results showed that the microarray-based data can be an important tool in characterization of L. monocytogenes strains involved in both invasive and gastroenteritis outbreaks. The results for the first time showed that the serotypes and epidemic clones are based on extensive pan-genomic variability and the 1/2b and 4bstrains are more closely related to each other than the 1/2a strains. The data also supported the hypothesis that the strains causing these two diverse outbreaks are genotypically different and this finding might be important in understanding the pathophysiology of this organism.
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