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N-glycolylneuraminic acid-containing ganglioside GM3 (NGcGM3)
- Target
- NGcGM3
- Molecular classification
- Glycosphingolipid, Ganglioside
01
Overview
N-glycolylneuraminic acid-containing ganglioside GM3 (NGcGM3) is a sialic acid-containing glycosphingolipid found in cell membranes. It is characterized by the presence of N-glycolylneuraminic acid (Neu5Gc) as its sialic acid moiety. Humans cannot synthesize Neu5Gc, but it can be incorporated from dietary sources. NGcGM3 is selectively expressed in many human cancers, making it a promising target for immunotherapies.
- Other names
- NeuGc-GM3
02
Mechanism of action
Monoclonal antibodies (e.g., 14F7) target NGcGM3 for antibody-dependent cell-mediated cytotoxicity (ADCC) or complement-dependent cytotoxicity (CDC). CAR-T therapies can be engineered to recognize and eliminate NGcGM3-expressing cells.
03
Biological functions
Membrane structure organizationModulation of cell signalingImmune regulationImpaired dendritic cell maturation
04
Disease associations
Cancer
05
Safety considerations
Potential for off-target effects due to low-level expression of NGcGM3 in normal tissues (from dietary incorporation).Immunogenicity of therapeutic antibodies.
06
Biomarkers
NGcGM3 expression in tumor tissue
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