Lacto-N-decaose, key oligosaccharide for next-generation biotherapeutics CAS 87003-65-4

Lacto-N-decaose (LND) is an important member of the human milk oligosaccharides (HMOs) family with complex structure and excellent functions. As a carbohydrate compound naturally occurring in the human body and with precise biological functions, Lacto-N-decaose is not only a "golden nutrient" for early infant growth and development, but also shows great therapeutic potential in the fields of intestinal health, immune regulation and disease intervention, and is becoming a star molecule in the research and development of high-end nutritional products and new biopharmaceuticals.

Chemical Information

Chemical name: Lacto-N-decaose

Common name: LND; fucosylated human milk oligosaccharide (representative structure)

Chemical formula: C₉₅H₁₆₈N₄O₂₃

Molecular weight: 1734.4 g/mol

CAS number: 87003-65-4

Structural features

Lacto-N-decaose is composed of ten monosaccharide units (including glucose, galactose, N-acetylglucosamine and fucose) connected through specific β-glycosidic bonds. Its structural characteristics determine its unique functions:

Highly branched complex structure: Unlike simple sugar chains, LND has a precise branched structure. This three-dimensional spatial conformation is the material basis for its ability to be selectively utilized by specific intestinal microorganisms and accurately recognize host cell surface receptors.

Key fucosylation modification: The fucose group at the end is the core functional group. This modification enables it to simulate antigenic determinants on the cell surface, thereby competitively binding to pathogens (such as bacteria and viruses), preventing them from adsorbing on the intestinal mucosa, and exerting a "bait" anti-infective effect.

Excellent stability and tolerance: As an oligosaccharide, LND is not enzymatically decomposed by the human upper gastrointestinal tract and can completely reach the colon, specifically providing an efficient and specific source of nutrients for intestinal beneficial bacteria (such as bifidobacteria). It is a true "prebiotic".

Main applications and advantages

1. Core functional ingredients of the next generation of high-end infant formula

The gold standard for simulated breast milk: Human milk oligosaccharides (HMOs) are the third largest solid component in breast milk after lactose and fat, and are crucial to infant health. As one of the complex and well-defined high-order HMOs, the addition of LND can significantly narrow the gap in immune function support between formula milk powder and breast milk.

Double health barrier construction:

Anti-pathogen colonization: Through its fucose structure, LND can specifically block the adhesion of various pathogens such as Campylobacter jejuni, rotavirus, and norovirus to host intestinal epithelial cells, effectively reducing the risk of infectious diarrhea in infants and young children.

Promote bacterial colonization: Selectively promote the proliferation of beneficial bacteria such as Bifidobacterium and Bacteroidetes in the infant's intestines, quickly establish a healthy intestinal microecology, fundamentally enhance immunity, improve digestion, and reduce the risk of crying and allergies.

2. Functional food ingredients for adult intestinal health and immune regulation

Regulating intestinal flora imbalance in adults: Suitable for flora disorders caused by antibiotic use, stress, and improper diet. LND can accurately nourish beneficial bacteria, inhibit harmful bacteria, and repair intestinal barrier function.

Potential metabolic and immune disease intervention: The latest research shows that HMOs exert systemic regulatory effects through the "gut-brain axis" and "gut-immune axis". LND has shown impressive research prospects in alleviating inflammatory bowel disease (IBD), adjuvant cancer immunotherapy, and improving metabolic syndrome.

3. Innovative tools and leading molecules for new biopharmaceutical research and development

Development of anti-infective drugs/preventive agents: Based on its "receptor mimicking" mechanism, LND can be used as a prototype molecule to develop antibacterial/viral adhesion inhibitors for the prevention or treatment of gastrointestinal and respiratory tract infections.

Targeted drug delivery carrier: Its special sugar chain structure can be used to modify drugs or nanoparticles to achieve targeted delivery to specific intestinal cells or flora.

Immune modulator: LND can gently regulate the functions of immune cells such as dendritic cells and T cells, providing new treatment ideas for autoimmune diseases or allergic diseases.

Scarce scientific research standard: Due to its extremely difficult synthesis, high-purity LND is a valuable tool for studying HMO structure-activity relationships, host-microbe interactions, glycobiology and infection mechanisms.

Conclusion

Lacto-N-decaose goes beyond traditional nutrients and represents a class of precision intervention strategies based on glycobiology. From laying the foundation of health in the first 1,000 days of life to responding to intestinal and immune challenges throughout the life cycle, LND is evolving from a key breast milk component to a bridge molecule connecting nutrition, microbiology and immunotherapy.

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