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Metal Homeostasis in Pathogenic Streptococci

Madeline S Akbari1, Kelly S Doran1, Lindsey R Burcham1

  • 1Department of Immunology and Microbiology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.

Microorganisms
|July 27, 2022
PubMed

Insights

Pathogenic Streptococcus bacteria use complex metal homeostasis systems to survive host environments. Understanding these systems, particularly for zinc, iron, copper, nickel, and manganese, is crucial for identifying virulence factors.

Area of Science:

  • Microbiology
  • Molecular Biology
  • Pathogenesis

Background:

  • Streptococcus species are Gram-positive bacteria, with many acting as opportunistic pathogens causing invasive diseases.
  • Metals are essential nutrients for bacterial survival, necessitating robust systems for maintaining metal homeostasis.
  • Pathogenic Streptococci must navigate dynamic host environments, requiring adaptation to metal stress during colonization and infection.

Purpose of the Study:

  • To review current knowledge on metal homeostasis in pathogenic Streptococci.
  • To summarize the roles of transition metals (zinc, manganese, iron, nickel, copper) in Streptococcal virulence.
  • To highlight the importance of bacterial metal transport systems in pathogenesis.

Main Methods:

  • Literature review of studies on metal homeostasis in pathogenic Streptococci.
  • Focus on transition metals: zinc, manganese, iron, nickel, and copper.
  • Analysis of bacterial metal transport systems (import/export) and their specificity.

Main Results:

  • Streptococci possess intricate systems for managing essential metal ions like zinc, manganese, iron, nickel, and copper.
  • These metal homeostasis systems are critical for bacterial survival and adaptation within host environments.
  • Dysregulation of metal ion concentrations can significantly impact Streptococcal virulence and disease progression.

Conclusions:

  • Metal homeostasis is a key factor in the pathogenicity of Streptococcus species.
  • Understanding Streptococcal metal transport and management is vital for developing novel therapeutic strategies.
  • Further research into specific metal-related virulence mechanisms will enhance our knowledge of invasive bacterial diseases.
Keywords:
Streptococcicopperironmanganesemetal homeostasismetal transportnickelvirulencezinc

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