Fungal cell wall and cellular metabolism

Fungal cell wall and cellular metabolism refers to a broad set of biological structures and biochemical pathways unique to or significantly different in fungi, making them primary targets for antifungal therapy [2.1.1, 2.1.3]. The fungal cell wall is a complex matrix of chitin, beta-glucans, and mannoproteins that provides osmotic stability; its synthesis is targeted by echinocandins, which inhibit 1,3-beta-D-glucan synthase [2.1.1, 2.1.5]. Cellular metabolism targets primarily involve the biosynthesis of ergosterol, the fungal equivalent of cholesterol, through enzymes like lanosterol 14-alpha-demethylase (targeted by azoles) and squalene epoxidase (targeted by allylamines) [2.1.2, 2.1.3]. Additionally, metabolic pathways such as nucleic acid synthesis (targeted by flucytosine) and protein synthesis are critical for fungal growth and virulence [2.1.2, 2.1.3]. These targets are vital for treating a wide range of fungal infections, from superficial mycoses to life-threatening systemic candidiasis and aspergillosis [2.1.1, 2.1.3]. Despite their effectiveness, drugs hitting these targets face challenges including the development of resistance, significant drug-drug interactions, and host toxicities like nephrotoxicity and hepatotoxicity [2.1.2, 2.1.5]. The selective nature of these targets is essential for minimizing damage to host cells while effectively controlling fungal proliferation [2.1.5]. Ongoing research continues to explore novel metabolic enzymes and cell wall components to overcome emerging resistance in clinical settings [2.1.3].

Other names

Fungal cell wall componentsFungal metabolic pathwaysAntifungal drug targetsFungal cell wall synthesis and metabolism

Inhibition of 1,3-beta-D-glucan synthase, inhibition of lanosterol 14-alpha-demethylase, inhibition of squalene epoxidase, binding to ergosterol, and inhibition of DNA/RNA synthesis.