ArticlePloS one2012
Streptococcus pyogenes SpyCEP influences host-pathogen interactions during infection in a murine air pouch model.
Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
17 citing papers in PubMed, 27 citations in OpenAlex.
- SpyCEP dismantles neutrophil immunity via disorder-driven chemokine remodeling and GAG targeting.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Rational selection of antigenic targets for Group A Streptococcus vaccine: updates, challenges and opportunities.NPJ vaccines · 2026Review
- Group A Streptococcal Virulence Factors and Vaccine Development-An Update.Microorganisms · 2026Review
- Immunomodulating Enzymes fromMicroorganisms · 2024Review
- Utilization of a highly adaptable murine air pouch model for minimally invasive testing of the inflammatory potential of biomaterials.Frontiers in bioengineering and biotechnology · 2024Article
- Correlates of immunity to Group A Streptococcus: a pathway to vaccine development.NPJ vaccines · 2023Review
- Streptococcal peptides and their roles in host-microbe interactions.Frontiers in cellular and infection microbiology · 2023Review
- The Role of Streptococcal and Staphylococcal Exotoxins and Proteases in Human Necrotizing Soft Tissue Infections.Toxins · 2019Review
- Dextromethorphan Attenuates NADPH Oxidase-Regulated Glycogen Synthase Kinase 3β and NF-κB Activation and Reduces Nitric Oxide Production in Group A Streptococcal Infection.Antimicrobial agents and chemotherapy · 2018Article
- Article
- IL-2 Expression and T lymphocyte Phenotyping in Young Children Suffering from Upper Respiratory Tract Infection with Streptococcus Pyogenes.International journal of biomedical science : IJBS · 2016Article
- Four-component Staphylococcus aureus vaccine 4C-staph enhances Fcγ receptor expression in neutrophils and monocytes and mitigates S. aureus infection in neutropenic mice.Infection and immunity · 2015Article
- The IL-8 protease SpyCEP is detrimental for Group A Streptococcus host-cells interaction and biofilm formation.Frontiers in microbiology · 2014Article
- Kallistatin modulates immune cells and confers anti-inflammatory response to protect mice from group A streptococcal infection.Antimicrobial agents and chemotherapy · 2013Article
- Cloning, expression, purification, crystallization and preliminary X-ray diffraction analysis of SpyCEP, a candidate antigen for a vaccine against Streptococcus pyogenes.Acta crystallographica. Section F, Structural biology and crystallization communications · 2013Article
- Regulation of inhibition of neutrophil infiltration by the two-component regulatory system CovRS in subcutaneous murine infection with group A streptococcus.Infection and immunity · 2013Article
- Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Streptococcus pyogenes is a major human pathogen worldwide, responsible for both local and systemic infections. These bacteria express the subtilisin-like protease SpyCEP which cleaves human IL-8 and related chemokines. We show that localization of SpyCEP is growth-phase and strain dependent. Significant shedding was observed only in a strain naturally overexpressing SpyCEP, and shedding was not dependent on SpyCEP autoproteolytic activity. Surface-bound SpyCEP in two different strains was capable of cleaving IL-8. To investigate SpyCEP action in vivo, we adapted the mouse air pouch model of infection for parallel quantification of bacterial growth, host immune cell recruitment and chemokine levels in situ. In response to infection, the predominant cells recruited were neutrophils, monocytes and eosinophils. Concomitantly, the chemokines KC, LIX, and MIP-2 in situ were drastically increased in mice infected with the SpyCEP knockout strain, and growth of this mutant strain was reduced compared to the wild type. SpyCEP has been described as a potential vaccine candidate against S. pyogenes, and we showed that surface-associated SpyCEP was recognized by specific antibodies. In vitro, such antibodies also counteracted the inhibitory effects of SpyCEP on chemokine mediated PMN recruitment. Thus, α-SpyCEP antibodies may benefit the host both directly by enabling opsonophagocytosis, and indirectly, by neutralizing an important virulence factor. The animal model we employed shows promise for broad application in the study of bacterial pathogenesis.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.