Streptococcal glucosyltransferase and adhesion-related structures (GTF/AgI/II)

Streptococcal glucosyltransferases (GTFs) and adhesion-related structures are primary virulence factors of cariogenic bacteria, particularly Streptococcus mutans, essential for the formation of dental plaque (Bowen & Koo, 2011). GTFs are extracellular enzymes that synthesize sticky glucan polymers from dietary sucrose, providing the physical matrix for biofilm development and facilitating bacterial accumulation on teeth (Krzyściak et al., 2014). Adhesion-related structures, such as the Antigen I/II (AgI/II) protein family, mediate the initial, high-affinity binding of streptococci to the salivary pellicle coating the tooth surface (Ma et al., 2015). By targeting these components, therapeutic agents aim to prevent the establishment of pathogenic biofilms and the subsequent localized acid production that causes tooth decay. Current pharmacological approaches include the use of monoclonal antibodies like CaroRx to block adhesion and small-molecule inhibitors or natural polyphenols to disrupt GTF activity (Lynch, 2011). These "anti-virulence" strategies are advantageous as they reduce the pathogenicity of the oral flora without the selective pressure for antibiotic resistance associated with traditional bactericidal agents.

Other names

Glucosyltransferase (GTF)Antigen I/II (AgI/II)P1 proteinSpaPPacBiofilm-associated proteinsStreptococcal adhesins

Inhibition of glucosyltransferase enzyme activity to prevent glucan synthesis and blocking of adhesion-related proteins to prevent bacterial attachment to the salivary pellicle.