Abstract
The increasing number of reports on the presence of sialic acids in fungi (N-acetyl, N-glycolyl-and 5,9-N,O-diacetyl neuraminic acids) based on direct and indirect evidence warrants the present review. Formerly suggested as sialidase-sensitive sources of anionic groups at the cell surface of fungal species grown in chemically defined media (e.g., Fonsecaea pedrosoi), sialic acids have also been found in Sporothrix schenckii, Paracoccidioides brasiliensis, Cryptococcus neoformans and recently, in Candida albicans. Methods used involved adequate hydrolysis and extraction procedures, HTPLC, gas-chromatography, colorimetry, mass spectroscopy, sialidase-sensitive lectin and influenza virus binding. Apart from protecting fungal cells against phagocytosis (S. schenckii, C. neoformans) and playing a cellular structural role (F. pedrosoi), other biological functions of sialic acids are still being investigated.
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Alviano, C.S., Travassos, L.R. & Schauer, R. Sialic acids in fungi. Glycoconj J 16, 545–554 (1999). https://doi.org/10.1023/A:1007078106280
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DOI: https://doi.org/10.1023/A:1007078106280
- fungi
- sialic acids
- anionic groups
- N-acetylneuraminic acid
- O-acetylated sialic acids
- fungal pathogenesis
- BSM, bovine sumandibular gland mucin
- CIH, colloidal iron hydroxide
- CMP, cytidine monophosphate
- EI, electron impact
- ER, endoplasmic reticulum
- FITC, fluorescein isothiocyanate
- Gal, Galactose
- GalNAc, N-acetyl-D-galactosamine
- GLC, Gas-liquid chromatography
- HPTLC, High-performance thin-layer chromatography
- LFA, Limax flavus agglutinin
- LPA, Limulus polyphemus agglutinin
- MAA, Maackia amurensis agglutinin
- MoAb, Monoclonal antibody
- MS, Mass-spectrometry
- Neu5Ac, N-Acetylneuraminic acid
- Neu5,9Ac2, 5-N-Acetyl-9-O-acetylneuraminic acid
- Neu5Gc, N-glycolylneuraminic acid
- PNA, peanut agglutinin
- SNA, Sambucus nigra agglutinin
- WGA, wheat germ agglutinin