Disialomonofucosyllactose-N-hexose—a new generation of immunomodulatory key 263916-84-3

Disialylmonofucosyllacto-N-hexaose is one of the representative molecules with the most complex structure and unique functions in the human milk oligosaccharide (HMOs) family, and is known as a "precision component in the field of glycobiology." It is not only a key nutritional and immune factor tailor-made by nature for infants and young children, but also an indispensable high-value raw material and tool molecule in the research and development of modern biomedicine, high-end infant nutrition and immunomodulatory therapies.

Chemical Information

Chemical name: Disialomonofucosyllactose-N-hexose

Common name: DSLN

English name: Disialylmonofucosyl lacto-N-hexaose

Chemical formula: C₆₈H₁₁₂N₄O₅₁

Molecular weight: 1801.62 g/mol

CAS number: 263916-84-3

Structural features: Glycoconjugates exquisitely designed by nature

The structure of disialomonofucosyllactose-N-hexose reflects the extreme complexity of sugar synthesis in nature. Its unique features are:

Precise multiple modification backbone: This molecule uses Lacto-N-hexaose as the core backbone. On this basis, two sialic acid (Sialic Acid) residues and one fucose (Fucose) residue are precisely modified. This specific modification pattern determines its unique functional specificity.

The double weapon of sialic acid: The introduction of two sialic acid residues gives the molecule a strong negative charge and spatial recognition signal. As a "key language" for cell surface communication, sialic acid is widely involved in intercellular recognition, immune regulation and pathogen defense.

Specific site modification of fucose: Fucose is specifically linked with α-1,3/4 bond type, which is the core structure of the Lewis antigen system and related biorecognition events. Its single point modification reflects functional precision rather than simple superposition.

Three-dimensional conformation and receptor recognition: This complex branched chain structure and charge distribution enable it to form a unique three-dimensional spatial conformation, accurately match a variety of lectin receptors (such as Siglecs, selectins, etc.), thereby mediating highly specific biological functions.

Main applications and advantages

1. Core functional factors for high-end infant nutrition and health

Promote brain and cognitive development: Sialic acid is an important component of gangliosides and sialoglycoproteins, which is crucial for infant brain development, synapse formation and cognitive ability improvement. As a HMO rich in sialic acid, DSLNT is a valuable "brain nutrition" strengthening ingredient in formula foods.

Shaping healthy intestinal flora: DSLNT can selectively promote the growth of beneficial bacteria such as Bifidobacterium, while inhibiting the colonization of pathogenic bacteria (such as Clostridium difficile). Its complex structure is difficult to be exploited by harmful bacteria, making it an ideal and precise prebiotic.

Defense against necrotizing enterocolitis (NEC): Breakthrough research in recent years has shown that DSLNT is a key protective factor in human milk to prevent necrotizing enterocolitis, a fatal disease in premature infants. It provides powerful intestinal protection by regulating bacterial flora, strengthening the intestinal barrier and inhibiting excessive inflammatory responses in the intestine. It is a gold standard ingredient for the development of special medical foods to prevent NEC.

2. Cutting-edge tools for immune regulation and anti-infectious therapy

Regulate immune response: The sialic acid on DSLNT can bind to Siglec family receptors on the surface of immune cells and transmit inhibitory signals, thereby gently regulating the immune system and preventing excessive inflammatory responses. This provides a molecular template for the development of novel glycoimmunotherapies for autoimmune diseases, allergies or inflammatory bowel disease.

Blocking pathogen adhesion: Many bacteria and viruses (such as influenza virus, Helicobacter pylori, Campylobacter jejuni) infect by recognizing sugar chain structures on the cell surface (including sialylated structures). DSLNT can be used as a "molecular bait" to competitively bind pathogens in the intestine or respiratory tract, preventing them from binding to host cells and exerting a natural anti-infectious effect.

Carrier potential for drug delivery and targeting: Its complex structure can be used to modify drugs or construct nano-delivery systems, using its specific receptor binding ability to achieve targeted delivery of drugs to specific immune cells or tissues.

3. Precious probes for basic research and diagnostic development

Research on glycobiological mechanisms: DSLNT is an excellent tool molecule for studying how sialylated and fucosylated sugar chains precisely regulate cell communication, microbial interaction, and immune homeostasis. DSLNT is an ideal probe to reveal the function of sugar codes in life processes.

Disease biomarkers: The content and pattern of DSLNT in human milk may be related to the mother's health status and the infant's disease risk. At the same time, changes in the structure of specific sialylated sugar chains in serum or tissues are also closely related to the development of cancer and immune diseases. DSLNT and its derived structures can be used as reference standards or markers for detecting these changes.

Enzymology and synthetic biology research: As a naturally occurring complex sugar chain, it is a high-end substrate for testing glycosyltransferase/glycosidase activity. It is also a benchmark target product for the cutting-edge industry of driving enzymatic or cell factory synthesis of HMOs.

Conclusion

Disialomonofucosyllactose-N-hexose is much more than a complex sugar molecule. It is a natural instruction for healthy programming in early life and a sophisticated bridge between nutrition, microbiota and immune system. From the next generation of high-end infant formula, to cutting-edge glycoimmunotherapy, to as a scientific research key to exploring the mysteries of life, its value is being unlocked rapidly.

The above information is provided by the editor of KASONS and is for scientific research only.