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Updated: May 27, 2026
12:27
Quantifying the Cytotoxicity of Staphylococcus aureus Against Human Polymorphonuclear Leukocytes
Published on: January 3, 2020
Exfoliative toxins of Staphylococcus aureus
Michal Bukowski1, Benedykt Wladyka, Grzegorz Dubin
1Department of Analytical Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland. mbukow@gmail.com
Toxins
|November 10, 2011
Summary
Staphylococcal Scalded Skin Syndrome (SSSS) is caused by exfoliative toxins (ETs) from Staphylococcus aureus. These toxins are serine proteases that break down skin proteins, leading to SSSS symptoms.
Area of Science:
- Microbiology
- Dermatology
- Biochemistry
Background:
- Staphylococcus aureus is a significant pathogen causing various human and livestock diseases.
- Staphylococcal exotoxins, including exfoliative toxins (ETs), are key virulence factors.
- ETs are specifically linked to Staphylococcal Scalded Skin Syndrome (SSSS), primarily affecting infants.
Purpose of the Study:
- To review the discovery of ETs as the causative agents of SSSS.
- To elucidate the molecular mechanism of ET action in SSSS pathogenesis.
- To highlight recent advancements in understanding ETs and SSSS.
Main Methods:
- Literature review of historical discoveries and current research on ETs.
- Analysis of biochemical studies on ETs' enzymatic activity.
- Examination of molecular data on ET-substrate interactions in skin.
Main Results:
- ETs are serine proteases with high specificity for desmosomal proteins in the skin.
- Hydrolysis of desmosomal proteins by ETs leads to the characteristic blistering and skin exfoliation in SSSS.
- Understanding the molecular mechanism provides insights into SSSS pathology.
Conclusions:
- Exfoliative toxins are the sole mediators of Staphylococcal Scalded Skin Syndrome.
- The serine protease activity of ETs against desmosomal proteins is the direct cause of SSSS.
- Continued research on ETs advances our knowledge of SSSS and potential therapeutic strategies.
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