2'-fucosyllactose—sugar chemistry empowers innovative drugs 41263-94-9

2'-Fucosyllactose, as the core fucosylated oligosaccharide in human breast milk, has a value far beyond nutrition. It is a bioactive glycoconjugate with precise spatial conformation and plays a key role in cell recognition, immune regulation and microbiota interaction.

Chemical Information

· Chemical name: O-β-D-galactosyl-(1→4)-O-α-L-fucosyl-(1→2)-D-glucose

· Common name: 2'-fucosyllactose

· English name: 2'-Fucosyllactose

· Chemical formula: C18H32O15

· Molecular weight: 488.44 g/mol

· CAS number: 41263-94-9

Sugar chemical structure and functional mechanism

The subtlety of 2'-FL lies in the connection mode and stereochemistry of its glycosidic bonds, which directly determines its biological function:

· The key α-fucosidic bond: L-fucose is connected to the glucose group in the lactose skeleton through an α-1,2-glycosidic bond. This specific configuration of linkage is the structural basis for its role as a "selectin ligand" analogue and microbial adhesion inhibitor on the cell surface.

· Molecular simulation and competitive inhibition: The structure of 2'-FL simulates the glycosphingolipid (such as H antigen) composed of α-1,2-linked fucose on the surface of intestinal epithelial cells. Pathogens (e.g., pathogenic Escherichia coli, Helicobacter pylori) utilize their lectins to recognize these structures to achieve colonization. Exogenous 2'-FL can serve as an efficient "molecular bait" that competitively binds to pathogen lectins, thereby blocking the infection pathway.

· Precise receptor binding: Its three-dimensional structure can be recognized with high affinity by specific lectin receptors (such as DC-SIGN) and sugar-binding proteins of beneficial intestinal bacteria (such as Bifidobacterium longum subsp. infantis), thereby regulating immune responses and shaping the microecology.

Core applications in biomedicine

1. Innovative strategies for anti-infectious drugs

o Anti-adhesion therapy: Develop "sugar drugs" with 2'-FL as the core component to prevent and treat intestinal and urinary tract infections caused by bacterial adhesion, especially for antibiotic-resistant strains, providing a new mechanism of action.

2. Immune regulation and inflammatory diseases

o Targeting immune cells: 2'-FL can regulate T cell differentiation by interacting with specific lectins (such as DC-SIGN) on the surface of dendritic cells, providing new ideas for immune intervention in inflammatory bowel disease, autoimmune diseases, etc.

o Gut-immune axis: indirectly regulates systemic immune homeostasis by shaping beneficial flora and is a potential component in the development of immuno-oncology combination therapies and immune adjuvants.

3. Drug delivery and targeting systems

o Liver-targeted delivery: Using the recognition of galactose/fucose by asialoglycoprotein receptors on the surface of liver cells, 2'-FL or its derivatives can be used as a target to construct a liver-targeted drug delivery system.

o Biomaterial functionalization: Modifying 2'-FL on the surface of nanoparticles or scaffold materials can give them specific bioadhesion or immunomodulatory functions.

4. Basic research and diagnostic tools

o Sugar-protein interaction research: used as a standard or probe to study the specificity of lectins and screen new inhibitors.

o Biomarker development: Changes in 2'-FL levels or related metabolic pathways in the body may be related to certain disease states and are potential diagnostic indicators.

Conclusion

2'-Fucosyllactose is the perfect intersection of glycochemistry, synthetic biology and biomedicine. It is no longer just a nutritional factor, but a key tool molecule for us to decode the sugar code of life and develop the next generation of anti-infective drugs, immune modulators and targeted delivery systems.