Alpha-N-acetylneuraminide alpha-2,8-sialyltransferase is an enzyme that in humans is encoded by the ST8SIA1gene.[1][2]
Gangliosides are membrane-bound glycosphingolipids containing sialic acid. Ganglioside GD3 is known to be important for cell adhesion and growth of cultured malignant cells. The protein encoded by ST8SIA1 is a type II membrane protein that catalyzes the transfer of sialic acid from CMP-sialic acid to GM3 to produce gangliosides GD3 and GT3. The encoded protein may be found in the Golgi apparatus and is a member of glycosyltransferase family 29.[2]
In melanocytic cells, ST8SIA1 gene expression may be regulated by MITF.[3]
References
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Angata K, Suzuki M, McAuliffe J, et al. (2000). "Differential biosynthesis of polysialic acid on neural cell adhesion molecule (NCAM) and oligosaccharide acceptors by three distinct alpha 2,8-sialyltransferases, ST8Sia IV (PST), ST8Sia II (STX), and ST8Sia III". J. Biol. Chem. 275 (24): 18594–601. doi:10.1074/jbc.M910204199. PMID10766765.
Zeng G, Gao L, Suetake K, et al. (2002). "Variations in gene expression patterns correlated with phenotype of F-11 tumor cells whose expression of GD3-synthase is suppressed". Cancer Lett. 178 (1): 91–8. doi:10.1016/S0304-3835(01)00817-5. PMID11849746.
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Moon SK, Kim HM, Lee YC, Kim CH (2004). "Disialoganglioside (GD3) synthase gene expression suppresses vascular smooth muscle cell responses via the inhibition of ERK1/2 phosphorylation, cell cycle progression, and matrix metalloproteinase-9 expression". J. Biol. Chem. 279 (32): 33063–70. doi:10.1074/jbc.M313462200. PMID15175338.
Ha KT, Lee YC, Kim CH (2004). "Overexpression of GD3 synthase induces apoptosis of vascular endothelial ECV304 cells through downregulation of Bcl-2". FEBS Lett. 568 (1–3): 183–7. doi:10.1016/j.febslet.2004.05.020. PMID15196944.
Kang NY, Kang Y, Kang SK, et al. (2006). "Transcriptional regulation of the human GD3 synthase gene expression in Fas-induced Jurkat T cells: a critical role of transcription factor NF-kappaB in regulated expression". Glycobiology. 16 (5): 375–89. doi:10.1093/glycob/cwj087. PMID16481330.
Ko K, Furukawa K, Takahashi T, et al. (2006). "Fundamental study of small interfering RNAs for ganglioside GD3 synthase gene as a therapeutic target of lung cancers". Oncogene. 25 (52): 6924–35. doi:10.1038/sj.onc.1209683. PMID16862187.
Szabo R, Skropeta D, et al. (2017). "Advancement of Sialyltransferase Inhibitors: Therapeutic Challenges and Opportunities". Med. Res. Rev. 37: 210–270. doi:10.1002/med.21407.