Feb, 2020
Group A Streptococcus establishes pharynx infection by degrading the deoxyribonucleic acid of neutrophil extracellular traps
Scientific Reports
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137
- Volume
- 10
- Number
- 1
- First page
- 3251
- Last page
- 3251
- Language
- English
- Publishing type
- Research paper (scientific journal)
- DOI
- 10.1038/s41598-020-60306-w
- Publisher
- Springer Science and Business Media LLC
Group A Streptococcus (GAS) secretes deoxyribonucleases and evades neutrophil extracellular killing by degrading neutrophil extracellular traps (NETs). However, limited information is currently available on the interaction between GAS and NETs in the pathogenicity of GAS pharyngitis. In this study, we modified a mouse model of GAS pharyngitis and revealed an essential role for DNase in this model. After intranasal infection, the nasal mucosa was markedly damaged near the nasal cavity, at which GAS was surrounded by neutrophils. When neutrophils were depleted from mice, GAS colonization and damage to the nasal mucosa were significantly decreased. Furthermore, mice infected with deoxyribonuclease knockout GAS mutants (∆spd, ∆endA, and ∆sdaD2) survived significantly better than those infected with wild-type GAS. In addition, the supernatants of digested NETs enhanced GAS-induced cell death in vitro. Collectively, these results indicate that NET degradation products may contribute to the establishment of pharyngeal infection caused by GAS.
- Link information
-
- DOI
- https://doi.org/10.1038/s41598-020-60306-w
- PubMed
- https://www.ncbi.nlm.nih.gov/pubmed/32094510
- PubMed Central
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7039874
- Research Projects
- Investigation of neutrophil extracellular trap degradation products using a new model of Streptococcus pyogenes tonsillitis.
- Research Projects
- Identification and functional analysis of neutrophil extracellular traps degradation product in Streptococcus pyogenes infections.
- URL
- http://www.nature.com/articles/s41598-020-60306-w.pdf
- URL
- http://www.nature.com/articles/s41598-020-60306-w
- ID information
-
- DOI : 10.1038/s41598-020-60306-w
- eISSN : 2045-2322
- ORCID - Put Code : 75711963
- Pubmed ID : 32094510
- Pubmed Central ID : PMC7039874