Host-cell ganglioside

Host-cell gangliosides are sialic acid-containing glycosphingolipids that are integral components of the plasma membrane, particularly enriched in the nervous system (Schnaar, R. L., 2019, Journal of Molecular Biology). They play vital roles in modulating cell signaling, cell-matrix interactions, and membrane protein function within specialized domains known as lipid rafts (Schengrund, C. L., 2015, Molecules). Beyond their physiological roles, these molecules frequently serve as primary attachment sites or receptors for a variety of pathogens, including influenza viruses, polyomaviruses, and bacterial toxins like the cholera toxin (Schengrund, C. L., 2015, Molecules). In oncology, specific gangliosides such as GD2 and GD3 are significantly overexpressed in tumors of neuroectodermal origin, including neuroblastoma and melanoma, making them valuable targets for monoclonal antibody therapies (Yu, A. L., et al., 2010, New England Journal of Medicine). Therapeutic interventions targeting gangliosides include the use of antibodies like dinutuximab to trigger immune-mediated tumor cell lysis and small molecule inhibitors like miglustat to manage lysosomal storage diseases by reducing ganglioside accumulation (Yu, A. L., et al., 2010, New England Journal of Medicine; NIH PubChem). However, targeting gangliosides carries risks, as they are also present on healthy peripheral nerve fibers, which can lead to treatment-induced neuropathic pain or autoimmune conditions like Guillain-Barré syndrome (Willison, H. J., et al., 2016, The Lancet).

Other names

Sialic acid-containing glycosphingolipidGangliosideSialoglycosphingolipid

Antibody-dependent cellular cytotoxicity (ADCC) and complement-dependent cytotoxicity (CDC) for oncology; substrate reduction therapy for metabolic disorders; competitive inhibition of pathogen entry.