Nutrient acquisition by pathogenic fungi: nutrient availability, pathway regulation, and differences in substrate

Christian B Fleck1, Felicitas Schöbel, Matthias Brock

  • 1Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Microbial Biochemistry and Physiology, Beutenbergstr. 11a, 07745 Jena, Germany.

Insights

Targeting microbial metabolism offers a route to new antimicrobial drugs. This review examines metabolic pathways in pathogenic fungi like Aspergillus fumigatus and Candida albicans, highlighting potential drug targets absent in humans.

Area of Science:

  • Microbiology
  • Biochemistry
  • Drug Discovery

Background:

  • Pathogenic microorganisms require host nutrients for survival.
  • Targeting essential metabolic pathways is a key strategy for developing new antimicrobial drugs.
  • Nutrient availability and pathogen strategies vary significantly across different host environments.

Purpose of the Study:

  • To review and compare key metabolic pathways in pathogenic fungi, focusing on Aspergillus fumigatus and Candida albicans.
  • To identify metabolic pathways essential for fungal survival during infection.
  • To highlight potential antifungal drug targets, particularly those absent in human metabolism.

Main Methods:

  • Literature review of fungal metabolism during infection.
  • Comparative analysis of metabolic pathways in Aspergillus fumigatus and Candida albicans.
  • Identification of conserved and unique metabolic strategies.

Main Results:

  • Fungal pathogens utilize diverse strategies to acquire nutrients from hosts.
  • Metabolic pathway regulation differs based on the host niche and fungal species.
  • Several metabolic pathways, absent in humans, are crucial for fungal pathogens, representing potential drug targets.

Conclusions:

  • Understanding fungal-specific metabolic pathways is critical for antifungal drug development.
  • The complexity of nutrient acquisition and metabolic regulation poses challenges for identifying universally essential pathways.
  • Targeting unique fungal metabolic vulnerabilities offers a promising avenue for novel antimicrobial therapies.

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