Nasal Tissue Extraction Is Essential for Characterization of the Murine Upper Respiratory Tract Microbiota
The nasal microbiota is composed of species that play a role in the colonization success of pathogens, including Streptococcus pneumoniae and Staphylococcus aureus . Murine models provide the ability to explore disease pathogenesis, but little is known about the natural murine nasal microbiota. Resp...
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| Vydáno v: | mSphere Ročník 5; číslo 6 |
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| Hlavní autoři: | , , , , , |
| Médium: | Journal Article |
| Jazyk: | angličtina |
| Vydáno: |
United States
American Society for Microbiology
16.12.2020
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| Témata: | |
| ISSN: | 2379-5042, 2379-5042 |
| On-line přístup: | Získat plný text |
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| Shrnutí: | The nasal microbiota is composed of species that play a role in the colonization success of pathogens, including
Streptococcus pneumoniae
and
Staphylococcus aureus
. Murine models provide the ability to explore disease pathogenesis, but little is known about the natural murine nasal microbiota.
Respiratory infections are a leading cause of morbidity and mortality worldwide. Bacterial pathogens often colonize the upper respiratory tract (nose or mouth) prior to causing lower respiratory infections or invasive disease. Interactions within the upper respiratory tract between colonizing bacteria and the resident microbiota could contribute to colonization success and subsequent transmission. Human carriage studies have identified associations between pathogens such as
Streptococcus pneumoniae
and members of the resident microbiota, although few mechanisms of competition and cooperation have been identified and would be aided by the use of animal models. Little is known about the composition of the murine nasal microbiota; thus, we set out to improve assessment, including tissue sampling, composition, and comparison between mouse sources. Nasal washes were efficient in sampling the nasopharyngeal space but barely disrupted the nasal turbinates. Nasal tissue extraction increased the yield of cultivable bacterial compared to nasal washes, revealing distinct community compositions. Experimental pneumococcal colonization led to dominance by the colonizing pathogen in the nasopharynx and nasal turbinates, but the composition of the microbiota, and interactions with resident microbes, differed depending on the sampling method. Importantly, vendor source has a large impact on microbial composition. Bacterial interactions, including cooperation and colonization resistance, depend on the biogeography of the nose and should be considered during research design of experimental colonization with pathogens.
IMPORTANCE
The nasal microbiota is composed of species that play a role in the colonization success of pathogens, including
Streptococcus pneumoniae
and
Staphylococcus aureus
. Murine models provide the ability to explore disease pathogenesis, but little is known about the natural murine nasal microbiota. This study established techniques to allow the exploration of the bacterial members of the nasal microbiota. The mouse nasal microbiota included traditional respiratory bacteria, including
Streptococcus
,
Staphylococcus
, and
Moraxella
species. Analyses were affected by different sampling methods as well as the commercial source of the mice, which should be included in future research design of infectious disease research. |
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| Bibliografie: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 Citation Schenck LP, McGrath JJC, Lamarche D, Stämpfli MR, Bowdish DME, Surette MG. 2020. Nasal tissue extraction is essential for characterization of the murine upper respiratory tract microbiota. mSphere 5:e00562-20. https://doi.org/10.1128/mSphere.00562-20. |
| ISSN: | 2379-5042 2379-5042 |
| DOI: | 10.1128/mSphere.00562-20 |