Contribution of a genomic accessory region encoding a putative cellobiose phosphotransferase system to virulence of Streptococcus pneumoniae.
Streptococcus pneumoniae (the pneumococcus) is a formidable human pathogen, responsible for massive global morbidity and mortality. The ability to utilize carbohydrates in a variety of host niches appears to be integral to pneumococcal pathogenesis. In this study we investigated a genomic island, wh...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2012-01-01
|
| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC3283741?pdf=render |
| _version_ | 1818361635685793792 |
|---|---|
| author | Lauren J McAllister Abiodun D Ogunniyi Uwe H Stroeher James C Paton |
| author_facet | Lauren J McAllister Abiodun D Ogunniyi Uwe H Stroeher James C Paton |
| author_sort | Lauren J McAllister |
| collection | DOAJ |
| description | Streptococcus pneumoniae (the pneumococcus) is a formidable human pathogen, responsible for massive global morbidity and mortality. The ability to utilize carbohydrates in a variety of host niches appears to be integral to pneumococcal pathogenesis. In this study we investigated a genomic island, which includes a ROK family protein, a putative cellobiose phosphotransferase system (PTS) and a putative sulfatase. This accessory region is widespread in the pneumococcus in strains of various serotypes and levels of virulence. We have performed simple bioinformatic analysis of the region and investigated its role in vivo in 2 strains with markedly different virulence profiles (WCH206 of serotype 3, ST180; Menzies5 of serotype 11A, ST662). Deleting and replacing the entire island with an antibiotic resistance cassette caused the virulent serotype 3 strain to become attenuated in a murine pneumonia/sepsis model. Further mutants were constructed and used to show that various components of the island contribute significantly to the fitness of WCH206 in a variety of niches of this model, including the nasopharynx, ears and blood, but especially in the lungs. In addition, the island conferred a competitive advantage in nasopharyngeal colonization for the serotype 11A strain, which was essentially avirulent in the pneumonia/sepsis model. The contribution of this island to both pathogenesis and colonization may explain why this accessory region is widespread in the pneumococcus. |
| first_indexed | 2024-12-13T21:19:49Z |
| format | Article |
| id | doaj.art-6190f9b7dcd7445c9f71a537f81604f6 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-13T21:19:49Z |
| publishDate | 2012-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-6190f9b7dcd7445c9f71a537f81604f62022-12-21T23:31:09ZengPublic Library of Science (PLoS)PLoS ONE1932-62032012-01-0172e3238510.1371/journal.pone.0032385Contribution of a genomic accessory region encoding a putative cellobiose phosphotransferase system to virulence of Streptococcus pneumoniae.Lauren J McAllisterAbiodun D OgunniyiUwe H StroeherJames C PatonStreptococcus pneumoniae (the pneumococcus) is a formidable human pathogen, responsible for massive global morbidity and mortality. The ability to utilize carbohydrates in a variety of host niches appears to be integral to pneumococcal pathogenesis. In this study we investigated a genomic island, which includes a ROK family protein, a putative cellobiose phosphotransferase system (PTS) and a putative sulfatase. This accessory region is widespread in the pneumococcus in strains of various serotypes and levels of virulence. We have performed simple bioinformatic analysis of the region and investigated its role in vivo in 2 strains with markedly different virulence profiles (WCH206 of serotype 3, ST180; Menzies5 of serotype 11A, ST662). Deleting and replacing the entire island with an antibiotic resistance cassette caused the virulent serotype 3 strain to become attenuated in a murine pneumonia/sepsis model. Further mutants were constructed and used to show that various components of the island contribute significantly to the fitness of WCH206 in a variety of niches of this model, including the nasopharynx, ears and blood, but especially in the lungs. In addition, the island conferred a competitive advantage in nasopharyngeal colonization for the serotype 11A strain, which was essentially avirulent in the pneumonia/sepsis model. The contribution of this island to both pathogenesis and colonization may explain why this accessory region is widespread in the pneumococcus.http://europepmc.org/articles/PMC3283741?pdf=render |
| spellingShingle | Lauren J McAllister Abiodun D Ogunniyi Uwe H Stroeher James C Paton Contribution of a genomic accessory region encoding a putative cellobiose phosphotransferase system to virulence of Streptococcus pneumoniae. PLoS ONE |
| title | Contribution of a genomic accessory region encoding a putative cellobiose phosphotransferase system to virulence of Streptococcus pneumoniae. |
| title_full | Contribution of a genomic accessory region encoding a putative cellobiose phosphotransferase system to virulence of Streptococcus pneumoniae. |
| title_fullStr | Contribution of a genomic accessory region encoding a putative cellobiose phosphotransferase system to virulence of Streptococcus pneumoniae. |
| title_full_unstemmed | Contribution of a genomic accessory region encoding a putative cellobiose phosphotransferase system to virulence of Streptococcus pneumoniae. |
| title_short | Contribution of a genomic accessory region encoding a putative cellobiose phosphotransferase system to virulence of Streptococcus pneumoniae. |
| title_sort | contribution of a genomic accessory region encoding a putative cellobiose phosphotransferase system to virulence of streptococcus pneumoniae |
| url | http://europepmc.org/articles/PMC3283741?pdf=render |
| work_keys_str_mv | AT laurenjmcallister contributionofagenomicaccessoryregionencodingaputativecellobiosephosphotransferasesystemtovirulenceofstreptococcuspneumoniae AT abiodundogunniyi contributionofagenomicaccessoryregionencodingaputativecellobiosephosphotransferasesystemtovirulenceofstreptococcuspneumoniae AT uwehstroeher contributionofagenomicaccessoryregionencodingaputativecellobiosephosphotransferasesystemtovirulenceofstreptococcuspneumoniae AT jamescpaton contributionofagenomicaccessoryregionencodingaputativecellobiosephosphotransferasesystemtovirulenceofstreptococcuspneumoniae |