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Peer-reviewed veterinary case report

Characterizing the role of tissue-type plasminogen activator in a mouse model of Group A streptococcal infection.

Journal:
Microbes and infection
Year:
2019
Authors:
Ly, Diane et al.
Affiliation:
Illawarra Health and Medical Research Institute and School of Chemistry and Molecular Bioscience · United Kingdom
Species:
rodent

Abstract

Plasmin(ogen) acquisition is critical for invasive disease initiation by Streptococcus pyogenes (GAS). Host urokinase plasminogen activator (uPA) plays a role in mediating plasminogen activation for GAS dissemination, however the contribution of tissue-type plasminogen activator (tPA) to GAS virulence is unknown. Using novel tPA-deficient ALBPLG1 mice, our study revealed no difference in mouse survival, bacterial dissemination or the pathology of GAS infection in the absence of tPA in AlbPLG1/tPAmice compared to AlbPLG1 mice. This study suggests that tPA has a limited role in this humanized model of GAS infection, further highlighting the importance of its counterpart uPA in GAS disease.

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Original publication: https://pubmed.ncbi.nlm.nih.gov/31009808/