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Lipid signalling in pathogenic fungi

Arpita Singh1, Maurizio Del Poeta

  • 1Biochemistry and Molecular Biology Microbiology and Immunology Division of Infectious Diseases, Medical University of South Carolina, Charleston, SC 29425, USA.

Cellular Microbiology
|November 25, 2010
PubMed

Insights

Lipid signaling in microbes, including yeasts and moulds, is crucial for fungal pathogenicity and virulence. Key molecules like sphingolipids and farnesol regulate fungal growth, stress responses, and immune evasion.

Area of Science:

  • Microbiology
  • Molecular Biology
  • Biochemistry

Background:

  • Lipid signaling, extensively studied in mammals, is increasingly recognized in microbial systems.
  • Microbial lipid signaling networks are vital for fungal pathogenicity and virulence.
  • Sphingolipids and quorum sensing molecules (QSMs) are key players in fungal biology.

Purpose of the Study:

  • To review the role of lipid signaling in microbial cells, focusing on yeasts and moulds.
  • To detail the involvement of sphingolipids, QSMs, and oxylipins in fungal pathogenicity and host immune response.

Main Methods:

  • Literature review of studies on lipid signaling in fungi.
  • Analysis of the roles of specific lipid molecules (sphingolipids, farnesol, oxylipins) in fungal virulence.

Main Results:

  • Microbial sphingolipids and their enzymes regulate pathogenicity in fungi like Cryptococcus neoformans.
  • Farnesol (a QSM) influences Candida albicans growth, biofilm formation, and stress responses.
  • QSMs and sphingolipids are essential for Aspergillus fumigatus cell wall integrity and virulence.
  • Fungal oxylipins enhance virulence and aid in counteracting host immune defenses.

Conclusions:

  • Lipid signaling networks are critical determinants of fungal virulence and host-pathogen interactions.
  • Understanding these pathways offers potential targets for antifungal strategies.

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