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Updated: Jul 5, 2025

Quantifying the Cytotoxicity of Staphylococcus aureus Against Human Polymorphonuclear Leukocytes
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Quantifying the Cytotoxicity of Staphylococcus aureus Against Human Polymorphonuclear Leukocytes

Published on: January 3, 2020

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Molecular Characteristics and Pathogenicity of Staphylococcus aureus Exotoxins

Zhihao Zhu1,2, Zuo Hu1, Shaowen Li2

  • 1Department of Zoonoses, Kitasato University School of Veterinary Medicine, Towada 034-8628, Japan.

International Journal of Molecular Sciences
|January 11, 2024
PubMed

Insights

Staphylococcus aureus exotoxins cause severe diseases and food poisoning. This review details classic and new exotoxin structures, activities, and pathogenicity, offering novel insights into virulence factors.

Area of Science:

  • Microbiology
  • Pathogen Research
  • Toxinology

Background:

  • Staphylococcus aureus is a major global pathogen causing significant morbidity and mortality.
  • S. aureus produces numerous exotoxins that are key virulence factors in various infections and foodborne illnesses.
  • Examples include staphylococcal enterotoxins (SEs), toxic shock syndrome toxin-1 (TSST-1), hemolysins, and exfoliative toxins.

Purpose of the Study:

  • To review the progress and novel insights into S. aureus exotoxins.
  • To cover molecular structures, biological activities, and pathogenicity of both classic and newly identified exotoxins.

Main Methods:

  • Literature review of scientific publications.
  • Analysis of molecular structures and biological activities of S. aureus exotoxins.
  • Assessment of pathogenicity data for various exotoxins.

Main Results:

  • S. aureus exotoxins exhibit diverse mechanisms contributing to disease.
  • New SEs and staphylococcal enterotoxin-like toxins (SEls) have been identified.
  • Panton-Valentine leucocidin (PVL) is a notable cytotoxin produced by community-associated methicillin-resistant S. aureus (CA-MRSA).

Conclusions:

  • Understanding S. aureus exotoxins is crucial for combating infectious diseases.
  • Ongoing research continues to uncover new exotoxins and their roles in pathogenicity.
  • This review provides a comprehensive overview of current knowledge on S. aureus exotoxins.
Keywords:
Panton–Valentine leucocidinexfoliative toxinhemolysinmembrane-damaging toxinstaphylococcal enterotoxinsuperantigen

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