Pan-genome analysis of the genus Finegoldia identifies two distinct clades, strain-specific heterogeneity, and putative virulence factors

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  • Holger Brüggemann
  • Anders Jensen
  • ,
  • Seven Nazipi
  • Hüsnü Aslan
  • Rikke Louise Meyer
  • Anja Poehlein, Department of Genomic and Applied Microbiology, Institute of Microbiology and Genetics, Georg-August University Göttingen, Göttingen, Germany.
  • ,
  • Elzbieta Brzuszkiewicz, Department of Genomic and Applied Microbiology, Institute of Microbiology and Genetics, Georg-August University Göttingen, Göttingen, Germany.
  • ,
  • Munir A Al-Zeer, Department of Applied Biochemistry, Institute of Biotechnology, TU Berlin, Germany.
  • ,
  • Volker Brinkmann, Microscopy Core Facility, Max Planck Institute for Infection Biology, Berlin, Germany.
  • ,
  • Bo Söderquist, Department of Laboratory Medicine, Clinical Microbiology, Faculty of Medicine and Health, Örebro University, 70185, Örebro, Sweden.

Finegoldia magna, a Gram-positive anaerobic coccus, is an opportunistic pathogen, associated with medical device-related infections. F. magna is the only described species of the genus Finegoldia. We report the analysis of 17 genomes of Finegoldia isolates. Phylogenomic analyses showed that the Finegoldia population can be divided into two distinct clades, with an average nucleotide identity of 90.7%. One clade contains strains of F. magna, whereas the other clade includes more heterogeneous strains, hereafter tentatively named "Finegoldia nericia". The latter species appears to be more abundant in the human microbiome. Surface structure differences between strains of F. magna and "F. nericia" were detected by microscopy. Strain-specific heterogeneity is high and previously identified host-interacting factors are present only in subsets of "F. nericia" and F. magna strains. However, all genomes encode multiple host factor-binding proteins such as albumin-, collagen-, and immunoglobulin-binding proteins, and two to four copies of CAMP (Christie-Atkins-Munch-Petersen) factors; in accordance, most strains show a positive CAMP reaction for co-hemolysis. Our work sheds new light of the genus Finegoldia and its ability to bind host components. Future research should explore if the genomic differences identified here affect the potential of different Finegoldia species and strains to cause opportunistic infections.

Original languageEnglish
Article number266
JournalScientific Reports
Volume8
Issue1
ISSN2045-2322
DOIs
Publication statusPublished - 10 Jan 2018

    Research areas

  • Journal Article

See relations at Aarhus University Citationformats

ID: 120420540