Fucosylated lactose-N-neohexose: a precise key to glycobiological research 178555-60-7

In the precise map of life sciences, in addition to the nucleic acid sequence written by A, T, C, G, and U and the protein blueprint composed of 20 amino acids, there is also a more complex and dynamic "sugar-coated code". These complex sugar chains covering the cell surface are like the "fingerprint" and "language" of the cell, which dominate countless key life processes such as intercellular recognition, communication, immune response and even disease occurrence. However, analyzing this set of codes faces huge challenges: the natural sugar chain structure is extremely complex and microscopically heterogeneous, making it difficult to obtain sufficient, pure, and clearly structured standard materials. Today, we present to you a sophisticated key to cracking this code – Difucosyllacto-N-neohexaose 1 (difucosylated lacto-N-neohexaose). This is not a simple sugar molecule. It is a precisely designed, highly branched oligosaccharide structure, and its lengthy systematic naming itself is a precise description of its atomic-level connection sequence and three-dimensional configuration. It represents one of the most functionally representative core modules in glycobiology research and is a bridge between basic discoveries and therapeutic applications.

Chemical Information

Chemical name: O-6-deoxy-α-L-galactopyranosyl-(1→3)-O-[β-D-galactopyranosyl-(1→4)]-O-2-(acetylamino)-2-deoxy-β-D-glucopyranosyl-(1→6)-O-[O-6-deoxy-α-L-pyranosyl Galactopyranosyl-(1→4)-O-[β-D-galactopyranosyl-(1→3)]-2-(acetylamino)-2-deoxy-β-D-glucopyranosyl-(1→3)]-O-β-D-galactopyranosyl-(1→4)-α-D-glucopyranosyl

Common name: Difucosyllacto-N-neohexaose 1 (difucosylated lactose-N-neohexaose)

English name: Difucosyllacto-N-neohexaose 1

CAS number: 178555-60-7

Molecular formula: C₅₂H₈₈N₂O₃₉

Molecular weight: 1365.25 g/mol

Structural features

Difucosyllacto-N-neohexaose 1 is a highly branched, complex oligosaccharide with a sophisticated structure and important biological specificity:

Precise spatial structure: This molecule uses lactose-N-neohexose as the core skeleton and builds a highly ordered three-dimensional structure through specific glycosidic bonds (including α-1,3, β-1,4, β-1,3 and β-1,6 connections). This precise arrangement is not random, but a functional module optimized by nature in the long process of evolution.

Key fucose modification: The molecule contains two key O-6-deoxy-α-L-galactopyranose units - fucose modification. Fucosylation is one of the most functionally oriented modifications of mammalian glycosylation, especially playing a role as a “molecular zip code” in cell recognition and signaling.

The presence of acetylglucosamine: The 2-(acetylamino)-2-deoxy-β-D-glucopyranose (i.e., N-acetylglucosamine, GlcNAc) units in the structure are the building blocks for forming complex N-linked and O-linked sugar chains, providing the molecule with specific charge characteristics and a hydrogen-bonding network.

Branched structure confers a multifunctional interface: The asymmetric branch design of the molecule creates multiple potential binding domains, allowing it to interact with multiple proteins or receptors simultaneously and mediate complex biological recognition processes.

Main applications and advantages

1. The gold standard in basic research on glycobiology

Decoder of intercellular communication: In living organisms, cell surfaces are covered with dense glycocalyxes—forests of complex oligosaccharides similar to Difucosyllacto-N-neohexaose 1. These sugar structures are the first language for cell-to-cell recognition, adhesion, and signaling. Our products provide researchers with well-defined, extremely pure standard molecules for:

Research on receptor-ligand interactions: Precisely analyze how sugar-binding proteins such as selectins, galectins, and Siglecs recognize specific sugar chain sequences, revealing the molecular basis of inflammatory response, immune surveillance, and pathogen invasion.

Glycosyltransferase and glycosidase specificity analysis: serves as a defined substrate or inhibitor to help identify the functional properties, kinetic parameters, and structure-activity relationships of enzymes.

Structural biology research: Determine the high-resolution structure of sugar-protein complexes through co-crystallization or cryo-electron microscopy techniques to promote structure-based drug design.

2. Biomarker probes for cancer and immune disease research

Indicators of disease-specific glycosylation: Numerous studies have shown that changes in cell surface glycosylation patterns, including changes in fucosylation levels, are closely associated with cancer progression, metastatic potential, and immune evasion. The fucosylated lactose series structure represented by Difucosyllacto-N-neohexaose 1:

is the core skeleton of multiple tumor-associated antigens (such as Sialyl Lewis X/A). These antigens are overexpressed in various malignant tumors such as colorectal cancer, pancreatic cancer, and lung cancer, promoting the adhesion of tumor cells to vascular endothelial cells and mediating hematogenous metastasis.

can be used as a basis for the development of detection reagents: for the development of highly sensitive ELISA tests, glycoarray chips or lectin-based diagnostic tools to monitor disease progression and treatment response.

Provide clues for immune regulation research: the activity of functional immune cell subsets such as regulatory T cells (Treg) is related to specific glycosylation patterns. This compound helps explore new areas of sugar-immune checkpoint interactions.

3. Tools for the development of novel treatment strategies

Sources of inspiration and validation tools for next-generation biologics:

Anti-adhesion therapy development: Inhibitors targeting selectin-ligand interactions are a popular direction for treating inflammatory diseases and blocking tumor metastasis. Clear structure-activity relationship data is crucial, and N-neohexaose 1 provides an irreplaceable template for the rational design of such drugs.

Glycoengineered antibodies and cell therapy: The glycosylation pattern of an antibody (especially the fucose level) directly affects its antibody-dependent cellular cytotoxicity (ADCC) effect. This compound and its derivatives can be used as research tools to optimize the glycoforms of therapeutic antibodies and enhance their efficacy.

Vaccine design: Certain pathogens (such as Helicobacter pylori, specific viruses) use similar sugar structures in the host to camouflage or invade. Vaccine designs based on defined carbohydrate antigens require high-purity standards for validation.

Enzyme replacement therapy: For certain lysosomal storage diseases involving defects in glycolipid or glycoprotein metabolism, molecules containing well-defined sugar structures can be used as standards to assess enzyme activity or to develop substrate-reducing therapies.

4. Molecular keys to study the interaction between microbes and hosts

Many pathogens (bacteria, viruses, parasites) initiate infection by recognizing specific sugar structures on the host cell surface. The structure represented by Difucosyllacto-N-neohexaose1 may be:

Mimic fragments of host cell receptors: used to study the adhesion mechanism of intestinal flora (such as Bifidobacterium), or BabA-mediated adhesion of Helicobacter pylori.

The starting point for the design of anti-infective drugs: By developing analogs or competitive inhibitors of such structures, pathogen adhesion can be blocked and infection can be prevented.

Conclusion

Difucosyllacto-N-neohexaose 1 is not just a complex chemical formula, it represents the exquisite level of information encoding in living systems - on top of nucleic acid and protein information, sugar chains constitute a dynamic, space-specific "sugar code". From decoding the language of cellular sociology to developing novel treatments for cancer metastasis, chronic inflammation, and infectious diseases, this precision molecule is an indispensable discovery tool.

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