3'-Fucosyllactose-biosynthesized next-generation sugar drug 41312-47-4

3'-fucosyllactose (3-FL) is the most representative fucosylated oligosaccharide among human milk oligosaccharides. Its unique α-1,3 glycosidic bond structure is the focus of the field of sugar chemical synthesis and biocatalysis. It is not only an ideal model for exploring sugar-biological macromolecule interactions in life processes, but also a core molecule for the development of new biopharmaceutical products, especially anti-adhesion therapies and precise nutritional intervention.

Chemistry and Structural Biology Information

· Chemical name: O-β-D-galactosyl-(1→4)-O-α-L-fucosyl-(1→3)-D-glucose

· Common name: 3'-fucosyllactose, 3-FL

· Chemical formula: C18H32O15

· Molecular weight: 488.44 g/mol

· CAS number: 41312-47-4

· Key structure: The core of its biological activity lies in the α-linked L-fucose at the end. This specific α-1,3 connection method accurately simulates the key epitopes in various cell surface glycoconjugates (such as Glycan-Lectin) in spatial conformation, giving it extremely high biological specificity.

Cutting edge applications in biomedicine and glycoscience

1. Lead compounds for anti-pathogen adhesion drugs

o Mechanism study: The surface lectins of various intestinal pathogens (such as norovirus, Helicobacter pylori) specifically recognize and bind to α-1,3/4 fucosylated glycans on the host cell surface. 3-FL can be used as an efficient "molecular bait" in in vitro and in vivo models by competitively binding to pathogen adhesin and effectively blocking its initial adhesion to the host intestinal mucosa, providing a new path for the development of non-antibiotic anti-infective drugs.

2. Carbohydrate immunology and microecological regulators

o Immunomodulatory function: 3-FL can be utilized by specific intestinal commensal bacteria (such as Bifidobacteria) to produce beneficial metabolites such as short-chain fatty acids, thereby regulating the intestinal immune environment and affecting T cell differentiation. Its role in the "gut-immune" axis makes it a valuable resource for the development of immunomodulators.

o Precision design of prebiotics: Based on its specificity in utilizing bacterial strains, 3-FL is the basic module for constructing precise prebiotic formulas, which is used to reshape imbalanced intestinal microecology in a targeted manner, and its value far exceeds that of traditional broad-spectrum prebiotics.

3. Tool molecules for glycochemistry and drug delivery research

o Glycosylation research platform: 3-FL is an ideal standard or probe molecule for studying the enzymatic mechanism of glycosyltransferases, screening glycoprotein binding ligands (such as Selectin), and analyzing the structure of glycan-protein interactions.

o Exploration of drug delivery carriers: Utilizing the specific expression of fucose receptors on certain cells (such as immune cells, tumor cells), 3-FL and its derivatives have shown great potential in surface modification of targeted drug delivery systems.

Conclusion

3'-Fucosyllactose has gone beyond the scope of traditional nutrients. It is a bridge connecting glycochemistry, synthetic biology and biomedicine. From leading compounds used as anti-infection “baits” to sophisticated tools for regulating the immune microenvironment, their value is being continuously explored.