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Updated: Jan 7, 2026

Staphylococcus aureus Growth using Human Hemoglobin as an Iron Source
Published on: February 7, 2013
The dual implications of iron homeostasis as a bacterial threat: its roles in virulence and antimicrobial resistance
Naveenraj Rajasekar1,2, Vijaya Bharathi Srinivasan1, Karthikeyan Krishnan1,2
1CSIR-Institute of Microbial Technology, Sector 39A, Chandigarh, India.
Abstract:
Antimicrobial resistance (AMR) is a global health concern that requires innovative therapeutic strategies to improve clinical outcomes. Bacterial priority pathogens have developed multiple mechanisms for AMR. To develop therapeutics to overcome AMR, it is essential to explore, understand, and identify effective molecular targets. Iron is crucial for survival and pathogenesis in bacterial physiology. Reports indicate that iron supports vital cellular functions and modulates bacterial virulence and pathogenicity. Due to the bacterial requirement for iron during infection, antimicrobials are being developed by targeting iron homeostasis pathways in pathogens. In this review, we explore the virulence, AMR, and iron homeostatic mechanisms in bacterial pathogens, as well as the functional role of iron in regulating virulence, antimicrobial resistance, and other aspects of bacterial physiology, to elucidate potential therapeutic strategies against drug-resistant pathogens. This review briefly discusses therapeutic interventions based on iron homeostasis mechanisms and the associated translational challenges.
Insights
Antimicrobial resistance (AMR) is a growing global threat. Targeting bacterial iron homeostasis presents a promising strategy to develop novel therapeutics against drug-resistant pathogens.
Area of Science:
- Microbiology
- Pathogenesis
- Drug Discovery
Background:
- Antimicrobial resistance (AMR) poses a significant global health challenge, necessitating novel therapeutic approaches.
- Bacterial pathogens employ diverse mechanisms to develop AMR, complicating treatment outcomes.
- Iron is essential for bacterial survival, virulence, and pathogenesis, making it a critical factor in infection.
Purpose of the Study:
- To explore the intricate relationship between iron homeostasis, virulence, and AMR in bacterial pathogens.
- To identify molecular targets within iron homeostasis pathways for developing new antimicrobial strategies.
- To review current therapeutic interventions targeting iron metabolism and their translational challenges.
Main Methods:
- Literature review of studies on bacterial iron metabolism, virulence factors, and AMR mechanisms.
- Analysis of the functional role of iron in regulating bacterial physiology and pathogenicity.
- Synthesis of information on therapeutic strategies targeting iron homeostasis pathways.
Main Results:
- Iron significantly influences bacterial virulence and pathogenicity.
- Dysregulation of iron homeostasis is linked to the development of AMR in pathogens.
- Targeting iron acquisition and utilization pathways shows potential for combating drug-resistant bacteria.
Conclusions:
- Understanding bacterial iron homeostasis is crucial for developing effective treatments against AMR.
- Therapeutic strategies focused on iron metabolism offer a promising avenue for novel antimicrobial drug discovery.
- Overcoming translational challenges is key to realizing the clinical potential of iron-targeted therapies.
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