Fungal cell wall and membrane interface

The fungal cell wall and membrane interface is a complex structural region essential for maintaining fungal cell integrity and mediating interactions with the host environment [NIH, 2022]. This interface contains the enzymatic machinery, such as 1,3-beta-glucan synthase, responsible for constructing the protective cell wall, as well as the plasma membrane itself, which is rich in the fungal-specific sterol, ergosterol [PubMed, 2021]. Because mammalian cells lack a cell wall and utilize cholesterol instead of ergosterol, this interface provides highly selective targets for antifungal chemotherapy [Nature Reviews Microbiology, 2017]. Major classes of antifungal drugs, including polyenes and echinocandins, exert their effects here by either creating pores in the membrane or inhibiting the synthesis of wall components [StatPearls, 2023]. Disruption of this interface leads to osmotic stress, cell lysis, and the release of pathogen-associated molecular patterns (PAMPs) that trigger host immune responses [Journal of Fungi, 2020]. Consequently, this region is a focal point for research into drug resistance mechanisms and the development of novel therapeutic agents [Clinical Microbiology Reviews, 2018].

Other names

Fungal cell envelopeCell wall-plasma membrane interfaceFungal cell surface

Drugs targeting this interface act by binding to ergosterol to form membrane pores (Polyenes), inhibiting the synthesis of (1,3)-beta-D-glucan (Echinocandins), or blocking the ergosterol biosynthetic pathway (Azoles and Allylamines) [StatPearls, 2023].