Candida species surface glycans

Candida species surface glycans are the primary structural and functional components of the fungal cell wall, essential for the survival and virulence of these opportunistic pathogens (PubMed: 31936360). This complex matrix is predominantly composed of beta-glucans (beta-1,3 and beta-1,6), chitin, and highly glycosylated mannoproteins, which are organized into a layered architecture (PubMed: 18460310). These glycans provide mechanical strength to withstand osmotic pressure and serve as the first point of contact with the host environment, facilitating adhesion to epithelial cells and the formation of drug-resistant biofilms. Because these carbohydrate structures are unique to fungi and absent in mammalian cells, they represent highly effective targets for antifungal drug development. Therapeutic agents such as echinocandins (e.g., Caspofungin) and triterpenoids (e.g., Ibrexafungerp) specifically disrupt the synthesis of beta-1,3-glucan, leading to cell wall weakening and osmotic lysis (PubMed: 35104460). Furthermore, these surface glycans act as major pathogen-associated molecular patterns (PAMPs) recognized by the host's innate immune system, making them significant targets for diagnostic biomarkers like the (1,3)-beta-D-glucan assay and for the development of fungal vaccines (PubMed: 31624144).

Other names

Candida cell wall polysaccharidesFungal cell wall glycansMannan-glucan complexCandida surface carbohydratesFungal cell wall carbohydrates

Inhibition of 1,3-beta-D-glucan synthase, binding to surface mannoproteins, and disruption of cell wall integrity