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Title: Candidatus Mycoplasma girerdii replicates, diversifies, and co-occurs with Trichomonas vaginalis in the oral cavity of a premature infant

Abstract

Genital mycoplasmas, which can be vertically transmitted, have been implicated in preterm birth, neonatal infections, and chronic lung disease of prematurity. Our prior work uncovered 16S rRNA genes belonging to a novel, as-yet-uncultivated mycoplasma (lineage 'Mnola') in the oral cavity of a premature neonate. Here, we characterize the organism's associated community, growth status, metabolic potential, and population diversity. Sequencing of genomic DNA from the infant's saliva yielded 1.44 Gbp of high-quality, non-human read data, from which we recovered three essentially complete (including 'Mnola') and three partial draft genomes (including Trichomonas vaginalis). The completed 629,409-bp 'Mnola' genome (Candidatus Mycoplasma girerdii str. UC-B3) was distinct at the strain level from its closest relative, vaginally-derived Ca. M. girerdii str. VCU-M1, which is also associated with T. vaginalis. Replication rate measurements indicated growth of str. UC-B3 within the infant. Genes encoding surface-associated proteins and restriction-modification systems were especially diverse within and between strains. In UC-B3, the population genetic underpinnings of phase variable expression were evident in vivo. Unique among mycoplasmas, Ca. M. girerdii encodes pyruvate-ferredoxin oxidoreductase and may be sensitive to metronidazole. This study reveals a metabolically unique mycoplasma colonizing a premature neonate, and establishes the value of genome-resolved metagenomics in tracking phase variation.

Authors:
 [1];  [1];  [2];  [3];  [4];  [5]
  1. Stanford Univ. of Medicine, Stanford, CA (United States)
  2. Univ. of Iowa College of Medicine, Iowa City, IA (United States)
  3. Univ. of Pittsburgh School of Medicine, Pittsburgh, PA (United States)
  4. Univ. of California, Berkeley, CA (United States)
  5. Stanford Univ. of Medicine, Stanford, CA (United States); Veterans Affairs Palo Alto Health Care System, Palo Alto, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1479352
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 7; Journal Issue: 1; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
60 APPLIED LIFE SCIENCES

Citation Formats

Costello, Elizabeth K., Sun, Christine L., Carlisle, Erica M., Morowitz, Michael J., Banfield, Jillian F., and Relman, David A. Candidatus Mycoplasma girerdii replicates, diversifies, and co-occurs with Trichomonas vaginalis in the oral cavity of a premature infant. United States: N. p., 2017. Web. doi:10.1038/s41598-017-03821-7.
Costello, Elizabeth K., Sun, Christine L., Carlisle, Erica M., Morowitz, Michael J., Banfield, Jillian F., & Relman, David A. Candidatus Mycoplasma girerdii replicates, diversifies, and co-occurs with Trichomonas vaginalis in the oral cavity of a premature infant. United States. https://doi.org/10.1038/s41598-017-03821-7
Costello, Elizabeth K., Sun, Christine L., Carlisle, Erica M., Morowitz, Michael J., Banfield, Jillian F., and Relman, David A. Mon . "Candidatus Mycoplasma girerdii replicates, diversifies, and co-occurs with Trichomonas vaginalis in the oral cavity of a premature infant". United States. https://doi.org/10.1038/s41598-017-03821-7. https://www.osti.gov/servlets/purl/1479352.
@article{osti_1479352,
title = {Candidatus Mycoplasma girerdii replicates, diversifies, and co-occurs with Trichomonas vaginalis in the oral cavity of a premature infant},
author = {Costello, Elizabeth K. and Sun, Christine L. and Carlisle, Erica M. and Morowitz, Michael J. and Banfield, Jillian F. and Relman, David A.},
abstractNote = {Genital mycoplasmas, which can be vertically transmitted, have been implicated in preterm birth, neonatal infections, and chronic lung disease of prematurity. Our prior work uncovered 16S rRNA genes belonging to a novel, as-yet-uncultivated mycoplasma (lineage 'Mnola') in the oral cavity of a premature neonate. Here, we characterize the organism's associated community, growth status, metabolic potential, and population diversity. Sequencing of genomic DNA from the infant's saliva yielded 1.44 Gbp of high-quality, non-human read data, from which we recovered three essentially complete (including 'Mnola') and three partial draft genomes (including Trichomonas vaginalis). The completed 629,409-bp 'Mnola' genome (Candidatus Mycoplasma girerdii str. UC-B3) was distinct at the strain level from its closest relative, vaginally-derived Ca. M. girerdii str. VCU-M1, which is also associated with T. vaginalis. Replication rate measurements indicated growth of str. UC-B3 within the infant. Genes encoding surface-associated proteins and restriction-modification systems were especially diverse within and between strains. In UC-B3, the population genetic underpinnings of phase variable expression were evident in vivo. Unique among mycoplasmas, Ca. M. girerdii encodes pyruvate-ferredoxin oxidoreductase and may be sensitive to metronidazole. This study reveals a metabolically unique mycoplasma colonizing a premature neonate, and establishes the value of genome-resolved metagenomics in tracking phase variation.},
doi = {10.1038/s41598-017-03821-7},
journal = {Scientific Reports},
number = 1,
volume = 7,
place = {United States},
year = {Mon Jun 19 00:00:00 EDT 2017},
month = {Mon Jun 19 00:00:00 EDT 2017}
}

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Cited by: 15 works
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Trichomonas vaginalis and Mycoplasma hominis : new tales of two old friends
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Replication and refinement of a vaginal microbial signature of preterm birth in two racially distinct cohorts of US women
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Time Series Genome-Centric Analysis Unveils Bacterial Response to Operational Disturbance in Activated Sludge
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Urogenital pathogens, associated with Trichomonas vaginalis, among pregnant women in Kilifi, Kenya: a nested case-control study
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  • Masha, Simon C.; Cools, Piet; Descheemaeker, Patrick
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Time Series Genome-Centric Analysis Unveils Bacterial Response to Operational Disturbance in Activated Sludge
journal, July 2019


Urogenital pathogens, associated with Trichomonas vaginalis, among pregnant women in Kilifi, Kenya: a nested case-control study
journal, November 2018

  • Masha, Simon C.; Cools, Piet; Descheemaeker, Patrick
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