Gross, Uwe

[["dc.bibliographiccitation.firstpage","720"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Microorganisms"],["dc.bibliographiccitation.volume","9"],["dc.contributor.author","Schwanbeck, Julian"],["dc.contributor.author","Bohne, Wolfgang"],["dc.contributor.author","Hasdemir, Ufuk"],["dc.contributor.author","Groß, Uwe"],["dc.contributor.author","Pfeifer, Yvonne"],["dc.contributor.author","Bunk, Boyke"],["dc.contributor.author","Riedel, Thomas"],["dc.contributor.author","Spröer, Cathrin"],["dc.contributor.author","Overmann, Jörg"],["dc.contributor.author","Zautner, Andreas E."],["dc.contributor.author","Frickmann, Hagen"],["dc.date.accessioned","2021-06-01T09:42:39Z"],["dc.date.available","2021-06-01T09:42:39Z"],["dc.date.issued","2021"],["dc.description.abstract","Mobile genetic elements, such as plasmids, facilitate the spread of antibiotic resistance genes in Enterobacterales. In line with this, we investigated the plasmid-resistome of seven blaOXA-48 gene-carrying Klebsiella pneumoniae isolates, which were isolated between 2013 and 2014 at the University Medical Center in Göttingen, Germany. All isolates were subjected to complete genome sequencing including the reconstruction of entire plasmid sequences. In addition, phenotypic resistance testing was conducted. The seven isolates comprised both disease-associated isolates and colonizers isolated from five patients. They fell into two clusters of three sequence type (ST)101 and two ST11 isolates, respectively; and ST15 and ST23 singletons. The seven isolates harbored various plasmids of the incompatibility (Inc) groups IncF, IncL/M, IncN, IncR, and a novel plasmid chimera. All blaOXA-48 genes were encoded on the IncL/M plasmids. Of note, distinct phenotypical resistance patterns associated with different sets of resistance genes encoded by IncL/M and IncR plasmids were observed among isolates of the ST101 cluster in spite of high phylogenetic relatedness of the bacterial chromosomes, suggesting nosocomial transmission. This highlights the importance of plasmid uptake and plasmid recombination events for the fast generation of resistance variability after clonal transmission. In conclusion, this study contributes a piece in the puzzle of molecular epidemiology of resistance gene-carrying plasmids in K. pneumoniae in Germany."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2021"],["dc.identifier.doi","10.3390/microorganisms9040720"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/85312"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-425"],["dc.relation.eissn","2076-2607"],["dc.relation.orgunit","Institut für Medizinische Mikrobiologie"],["dc.rights","CC BY 4.0"],["dc.title","Detection of a New Resistance-Mediating Plasmid Chimera in a blaOXA-48-Positive Klebsiella pneumoniae Strain at a German University Hospital"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","BMC Genomics"],["dc.bibliographiccitation.lastpage","14"],["dc.bibliographiccitation.volume","19"],["dc.contributor.author","Groß, Uwe"],["dc.contributor.author","Brzuszkiewicz, Elzbieta B."],["dc.contributor.author","Gunka, Katrin"],["dc.contributor.author","Starke, Jessica"],["dc.contributor.author","Riedel, Thomas"],["dc.contributor.author","Bunk, Boyke"],["dc.contributor.author","Spröer, Cathrin"],["dc.contributor.author","Wetzel, Daniela"],["dc.contributor.author","Poehlein, Anja"],["dc.contributor.author","Chibani, Cynthia"],["dc.contributor.author","Bohne, Wolfgang"],["dc.contributor.author","Overmann, Jörg"],["dc.contributor.author","Zimmermann, Ortrud"],["dc.contributor.author","Daniel, Rolf"],["dc.contributor.author","Liesegang, Heiko"],["dc.date.accessioned","2019-07-09T11:45:11Z"],["dc.date.available","2019-07-09T11:45:11Z"],["dc.date.issued","2018"],["dc.description.abstract","BACKGROUND: Clostridioides difficile infections (CDI) have emerged over the past decade causing symptoms that range from mild, antibiotic-associated diarrhea (AAD) to life-threatening toxic megacolon. In this study, we describe a multiple and isochronal (mixed) CDI caused by the isolates DSM 27638, DSM 27639 and DSM 27640 that already initially showed different morphotypes on solid media. RESULTS: The three isolates belonging to the ribotypes (RT) 012 (DSM 27639) and 027 (DSM 27638 and DSM 27640) were phenotypically characterized and high quality closed genome sequences were generated. The genomes were compared with seven reference strains including three strains of the RT 027, two of the RT 017, and one of the RT 078 as well as a multi-resistant RT 012 strain. The analysis of horizontal gene transfer events revealed gene acquisition incidents that sort the strains within the time line of the spread of their RTs within Germany. We could show as well that horizontal gene transfer between the members of different RTs occurred within this multiple infection. In addition, acquisition and exchange of virulence-related features including antibiotic resistance genes were observed. Analysis of the two genomes assigned to RT 027 revealed three single nucleotide polymorphisms (SNPs) and apparently a regional genome modification within the flagellar switch that regulates the fli operon. CONCLUSION: Our findings show that (i) evolutionary events based on horizontal gene transfer occur within an ongoing CDI and contribute to the adaptation of the species by the introduction of new genes into the genomes, (ii) within a multiple infection of a single patient the exchange of genetic material was responsible for a much higher genome variation than the observed SNPs."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2018"],["dc.identifier.doi","10.1186/s12864-017-4368-0"],["dc.identifier.pmid","29291715"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/15054"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59178"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.intern","In goescholar not merged with http://resolver.sub.uni-goettingen.de/purl?gs-1/15123 but duplicate"],["dc.notes.status","final"],["dc.relation.issn","1471-2164"],["dc.rights","CC BY 4.0"],["dc.rights.access","openAccess"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject.ddc","570"],["dc.title","Comparative genome and phenotypic analysis of three Clostridioides difficile strains isolated from a single patient provide insight into multiple infection of C. difficile."],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","8"],["dc.bibliographiccitation.journal","Microbial Genomics"],["dc.bibliographiccitation.volume","6"],["dc.contributor.author","Frentrup, Martinique"],["dc.contributor.author","Zhou, Zhemin"],["dc.contributor.author","Steglich, Matthias"],["dc.contributor.author","Meier-Kolthoff, Jan P."],["dc.contributor.author","Göker, Markus"],["dc.contributor.author","Riedel, Thomas"],["dc.contributor.author","Bunk, Boyke"],["dc.contributor.author","Spröer, Cathrin"],["dc.contributor.author","Overmann, Jörg"],["dc.contributor.author","Blaschitz, Marion"],["dc.contributor.author","Indra, Alexander"],["dc.contributor.author","von Müller, Lutz"],["dc.contributor.author","Kohl, Thomas A."],["dc.contributor.author","Niemann, Stefan"],["dc.contributor.author","Seyboldt, Christian"],["dc.contributor.author","Klawonn, Frank"],["dc.contributor.author","Kumar, Nitin"],["dc.contributor.author","Lawley, Trevor D."],["dc.contributor.author","García-Fernández, Sergio"],["dc.contributor.author","Cantón, Rafael"],["dc.contributor.author","del Campo, Rosa"],["dc.contributor.author","Zimmermann, Ortrud"],["dc.contributor.author","Groß, Uwe"],["dc.contributor.author","Achtman, Mark"],["dc.contributor.author","Nübel, Ulrich"],["dc.date.accessioned","2021-04-14T08:24:13Z"],["dc.date.available","2021-04-14T08:24:13Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1099/mgen.0.000410"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/81205"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","2057-5858"],["dc.title","A publicly accessible database for Clostridioides difficile genome sequences supports tracing of transmission chains and epidemics"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","Microbial Genomics"],["dc.bibliographiccitation.volume","7"],["dc.contributor.author","Dieckmann, Anastasia-Lisa"],["dc.contributor.author","Riedel, Thomas"],["dc.contributor.author","Bunk, Boyke"],["dc.contributor.author","Spröer, Cathrin"],["dc.contributor.author","Overmann, Jörg"],["dc.contributor.author","Groß, Uwe"],["dc.contributor.author","Bader, Oliver"],["dc.contributor.author","Bohne, Wolfgang"],["dc.contributor.author","Morgenstern, Burkhard"],["dc.contributor.author","Hosseini, Morteza"],["dc.contributor.author","Zautner, Andreas E."],["dc.date.accessioned","2021-12-01T09:21:07Z"],["dc.date.available","2021-12-01T09:21:07Z"],["dc.date.issued","2021"],["dc.description.abstract","The intriguing recent discovery of Campylobacter coli strains, especially of clade 1, that (i) possess mosaic C. coli / C. jejuni alleles, (ii) demonstrate mixed multilocus sequence types (MLSTs) and (iii) have undergone genome-wide introgression has led to the speculation that these two species may be involved in an accelerated rate of horizontal gene transfer that is progressively leading to the merging of both species in a process coined \\‘despeciation\\’. In an MLST-based neighbour-joining tree of a number of C. coli and C. jejuni isolates of different clades, three prominent Campylobacter isolates formed a seemingly separate cluster besides the previously described C. coli and C. jejuni clades. In the light of the suspected, ongoing genetic introgression between the C. coli and C. jejuni species, this cluster of Campylobacter isolates is proposed to present one of the hybrid clonal complexes in the despeciation process of the genus. Specific DNA methylation as well as restriction modification systems are known to be involved in selective uptake of external DNA and their role in such genetic introgression remains to be further investigated. In this study, the phylogeny and DNA methylation of these putative C. coli / C. jejuni hybrid strains were explored, their genomic mosaic structure caused by C. jejuni introgression was demonstrated and basic phenotypic assays were used to characterize these isolates. The genomes of the three hybrid Campylobacter strains were sequenced using PacBio SMRT sequencing, followed by methylome analysis by Restriction-Modification Finder and genome analysis by Parsnp, Smash++ and blast . Additionally, the strains were phenotypically characterized with respect to growth behaviour, motility, eukaryotic cell invasion and adhesion, autoagglutination, biofilm formation, and water survival ability. Our analyses show that the three hybrid Campylobacter strains are clade 1 C . coli strains, which have acquired between 8.1 and 9.1 % of their genome from C. jejuni . The C. jejuni genomic segments acquired are distributed over the entire genome and do not form a coherent cluster. Most of the genes originating from C. jejuni are involved in chemotaxis and motility, membrane transport, cell signalling, or the resistance to toxic compounds such as bile acids. Interspecies gene transfer from C. jejuni has contributed 8.1–9.1% to the genome of three C. coli isolates and initiated the despeciation between C. jejuni and C. coli . Based on their functional annotation, the genes originating from C. jejuni enable the adaptation of the three strains to an intra-intestinal habitat. The transfer of a fused type II restriction-modification system that recognizes the CAYNNNNNCTC/GAGNNNNNRTG motif seems to be the key for the recombination of the C. jejuni genetic material with C. coli genomes."],["dc.description.abstract","The intriguing recent discovery of Campylobacter coli strains, especially of clade 1, that (i) possess mosaic C. coli / C. jejuni alleles, (ii) demonstrate mixed multilocus sequence types (MLSTs) and (iii) have undergone genome-wide introgression has led to the speculation that these two species may be involved in an accelerated rate of horizontal gene transfer that is progressively leading to the merging of both species in a process coined \\‘despeciation\\’. In an MLST-based neighbour-joining tree of a number of C. coli and C. jejuni isolates of different clades, three prominent Campylobacter isolates formed a seemingly separate cluster besides the previously described C. coli and C. jejuni clades. In the light of the suspected, ongoing genetic introgression between the C. coli and C. jejuni species, this cluster of Campylobacter isolates is proposed to present one of the hybrid clonal complexes in the despeciation process of the genus. Specific DNA methylation as well as restriction modification systems are known to be involved in selective uptake of external DNA and their role in such genetic introgression remains to be further investigated. In this study, the phylogeny and DNA methylation of these putative C. coli / C. jejuni hybrid strains were explored, their genomic mosaic structure caused by C. jejuni introgression was demonstrated and basic phenotypic assays were used to characterize these isolates. The genomes of the three hybrid Campylobacter strains were sequenced using PacBio SMRT sequencing, followed by methylome analysis by Restriction-Modification Finder and genome analysis by Parsnp, Smash++ and blast . Additionally, the strains were phenotypically characterized with respect to growth behaviour, motility, eukaryotic cell invasion and adhesion, autoagglutination, biofilm formation, and water survival ability. Our analyses show that the three hybrid Campylobacter strains are clade 1 C . coli strains, which have acquired between 8.1 and 9.1 % of their genome from C. jejuni . The C. jejuni genomic segments acquired are distributed over the entire genome and do not form a coherent cluster. Most of the genes originating from C. jejuni are involved in chemotaxis and motility, membrane transport, cell signalling, or the resistance to toxic compounds such as bile acids. Interspecies gene transfer from C. jejuni has contributed 8.1–9.1% to the genome of three C. coli isolates and initiated the despeciation between C. jejuni and C. coli . Based on their functional annotation, the genes originating from C. jejuni enable the adaptation of the three strains to an intra-intestinal habitat. The transfer of a fused type II restriction-modification system that recognizes the CAYNNNNNCTC/GAGNNNNNRTG motif seems to be the key for the recombination of the C. jejuni genetic material with C. coli genomes."],["dc.identifier.doi","10.1099/mgen.0.000679"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/94352"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-478"],["dc.relation.eissn","2057-5858"],["dc.title","Genome and Methylome analysis of a phylogenetic novel Campylobacter coli cluster with C. jejuni introgression"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","311"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","International Journal of Medical Microbiology"],["dc.bibliographiccitation.lastpage","320"],["dc.bibliographiccitation.volume","307"],["dc.contributor.author","Riedel, Thomas"],["dc.contributor.author","Wetzel, Daniela"],["dc.contributor.author","Hofmann, Julia Danielle"],["dc.contributor.author","Plorin, Simon Paul Erich Otto"],["dc.contributor.author","Dannheim, Henning"],["dc.contributor.author","Berges, Mareike"],["dc.contributor.author","Zimmermann, Ortrud"],["dc.contributor.author","Bunk, Boyke"],["dc.contributor.author","Schober, Isabel"],["dc.contributor.author","Spröer, Cathrin"],["dc.contributor.author","Liesegang, Heiko"],["dc.contributor.author","Jahn, Dieter"],["dc.contributor.author","Overmann, Jörg"],["dc.contributor.author","Groß, Uwe"],["dc.contributor.author","Neumann-Schaal, Meina"],["dc.date.accessioned","2020-12-10T14:24:37Z"],["dc.date.available","2020-12-10T14:24:37Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.1016/j.ijmm.2017.05.007"],["dc.identifier.issn","1438-4221"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/72302"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","High metabolic versatility of different toxigenic and non-toxigenic Clostridioides difficile isolates"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]