Respiratory Epithelial Cells: More Than Just a Physical Barrier to Fungal Infections

Bianca C S C Barros1, Bruna R Almeida2, Debora T L Barros2

  • 1Laboratory of Applied Toxinology, Center of Toxins, Immune-Response and Cell Signaling (CeTICS), Butantan Institute, São Paulo 05503-900, SP, Brazil.

Insights

Respiratory epithelial cells interact with fungal pathogens like Aspergillus and Paracoccidioides. This review explores how these cells respond to fungal adhesion, invasion, and immune signaling.

Area of Science:

  • Immunology
  • Cell Biology
  • Microbiology

Background:

  • The respiratory epithelium forms a critical barrier against inhaled pathogens.
  • Epithelial cells play a key role in lung homeostasis and gas exchange.
  • Pathogens can manipulate epithelial cell signaling, promoting adhesion and invasion.

Purpose of the Study:

  • To review the response of respiratory epithelial cells to fungal pathogens.
  • To focus on Aspergillus and Paracoccidioides, which cause systemic mycoses.
  • To discuss host-pathogen interactions at the cellular level.

Main Methods:

  • Literature review of host-pathogen interactions.
  • Analysis of cell signaling pathways involved in fungal infections.
  • Identification of fungal molecules mediating adhesion and invasion.

Main Results:

  • Fungal pathogens manipulate respiratory epithelial cell signaling pathways.
  • Epithelial cells secrete chemokines and cytokines in response to fungal presence.
  • Specific host receptors and fungal adhesins are involved in these interactions.

Conclusions:

  • Respiratory epithelial cells are active participants in antifungal immunity.
  • Understanding these interactions is crucial for developing treatments for systemic mycoses.
  • This review highlights key molecular mechanisms in host-pathogen communication.

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