Host Sialic Acid Receptor (None commonly used; sometimes "SA receptor" in literature, but not standardized[2])

Host sialic acid receptors are carbohydrate-rich structures (often glycoproteins or glycolipids) on cell surfaces that possess terminal sialic acid residues. They serve as crucial mediators of cellular communication, adhesion, and immune modulation. Importantly, they act as primary receptors for many viruses (e.g., influenza, coronaviruses, reovirus, rotavirus, adenovirus), enabling pathogen entry into host cells. The specificity of virus binding depends on the type and linkage of sialic acid (commonly α2,3- or α2,6-linked to galactose), which determines tropism and host range[2][6][4]. Sialic acids are also subject to various modifications (e.g., O-acetylation), influencing both physiological processes and pathogen susceptibility[1][5]. Therapeutic strategies targeting these receptors focus on blocking pathogen entry, modulating immune interactions, or detecting disease-associated hypersialylation[7][3][4]. While targeting sialic acid receptors is promising for infection prevention and cancer therapy, careful consideration of their essential physiological roles and ubiquitous expression is required to avoid adverse effects[3][1][7].\n\nIf a more specific target name is needed (e.g., for a particular linkage type or molecular context), this base form can be extended accordingly (e.g., "Human α2,6-linked sialic acid receptor").

Other names

Sialic acid receptorSialylated glycan receptorSialyl-glycoconjugate receptorSA receptorSialylated receptor

Prevention of viral entry: Drugs or biologics bind to sialic acid receptors, blocking pathogen attachment/entry\nInhibition of receptor cleavage: Neuraminidase inhibitors prevent removal of sialic acid from host cell surfaces, interfering with viral release/spread