Lactose-N-neohexacose—a precise enabler of high-end human milk oligosaccharides CAS: 64003-52-7

Lacto-N-neohexaose (LNnH) is a core member of the human milk oligosaccharide (HMOs) family with precise structure and clear functions. It is known as "the guardian of intestinal health in infants and young children" and "the star molecule of precision nutrition". It is not only a key active ingredient in natural human milk that supports healthy development in early life, but also a high-value-added raw material that has attracted much attention in the fields of modern high-end nutritional products, functional foods and biomedicine.

Chemical Information

Chemical name: Lacto-N-neohexaose

Common name: Lactose-N-neohexose, often abbreviated as LNnH

Chemical formula: C₄₀H₆₈N₂O₃₁

Molecular weight: 1072.96 g/mol

CAS number: 64003-52-7

Structural features

LNnH belongs to the lacto-N-neohexaccharide series, and its structure reflects the high complexity and functional specificity of human milk oligosaccharides:

Precision hexasaccharide structure: It is composed of glucose, galactose, N-acetylglucosamine and other monosaccharides connected through specific β-glycosidic bonds to form a linear hexasaccharide structure (Galβ1-4GlcNAcβ1-3Galβ1-4GlcNAcβ1-3Galβ1-4Glc). This structure is the material basis of its biological activity.

Key functional motif: The structure contains the lactosamine (LacNAc) repeating unit, which is a key structure in many biological recognition processes. It can be specifically recognized and utilized by the enzyme system of beneficial intestinal bacteria (such as Bifidobacteria). It can also be used as a potential receptor mimic to participate in intercellular signal regulation.

Stability and diversity: Unlike proteins or nucleic acids, the glycosidic bonds of this type of oligosaccharide have a certain stability in the digestive tract environment and can reach the large intestine intact to play a role; the subtle differences in their structures (such as bond type, connection sequence) directly determine the specificity of the function. LNnH is one of the advantageous structures with clear prebiotic and immunomodulatory functions.

Main applications and advantages

1. Core functional ingredients of high-end infant formula milk powder and formula foods for special medical purposes

Precise prebiotic effect: LNnH can efficiently and selectively promote the proliferation of specific beneficial bacteria in the intestine (especially Bifidobacterium infantis, etc.), help establish a healthy early intestinal microecology, inhibit the colonization of pathogenic bacteria, and provide key support for the development of the immune system of infants and young children.

Support immune development: Human milk oligosaccharides can gently train the immune system of infants and young children through various mechanisms such as directly interacting with intestinal immune cells, regulating cytokine expression, and acting as "bait" receptors to block pathogen adhesion. LNnH plays an important role in reducing the risk of infection and allergies.

Potential support for brain and cognitive development: Emerging research suggests that certain HMOs may have a positive impact on neurodevelopment through the gut-brain axis or as sialic acid precursors. Adding HMOs with precise structures such as LNnH is a key step for formula milk powder to achieve "breast milk simulation" from macro to micro.

2. Innovative raw materials for adult nutrition and functional foods

Intestinal health management: For adult intestinal flora imbalance, inflammatory bowel disease and other health problems, LNnH can be used as a high-end targeted prebiotic to help restore the balance of intestinal flora and strengthen the intestinal barrier function.

Immunomodulation and metabolic health: Its immunomodulatory properties are also applicable to adults and may have potential value in improving low-grade inflammation and assisting in the management of metabolic syndrome. It can be used as an active ingredient in functional drinks, dietary supplements or special medical foods.

High value-added differentiation: In today's increasingly fierce competition in the health food market, adding functional oligosaccharides with clear chemical structures and scientific endorsements like LNnH is an important strategy for companies to build high-end product lines and achieve breakthroughs in technical barriers.

3. Biomedical research and drug development tools

Basic research on glycobiology: LNnH is an ideal probe molecule for studying the interaction mechanism between oligosaccharides and microorganisms and host cells. It helps to elucidate the molecular details of infection, immune response and other processes.

Potential carriers or targets for drug development: Based on its cell surface receptor mimicking properties, the LNnH structure can provide inspiration and structural basis for the development of anti-adhesion therapies (inhibiting bacterial or viral infections), the design of targeted drug delivery systems or new immune modulators.

Diagnostic reagent development: Its specific structure can be used as a standard or immobilized ligand to develop analytical tools and diagnostic kits for detecting relevant enzyme activities, microorganisms or biomarkers.

Conclusion

Lactose-N-neohexacose (LNnH) is more than just a sugar compound, it represents an important milestone in nutritional science from "macro-satisfaction" to "micro-precision". From laying the foundation of health for infants and young children in the early stages of life, to empowering adults with precise health management, to providing key tools for cutting-edge biomedical research, its value is being continuously discovered and recognized.

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