6-Sialyl galactose (sodium salt)—a key oligosaccharide in glycobiology research 35259-23-5

6-Sialyl galactose (sodium salt) (N-acetylneuraminyl-(2-6)-galactose) is an important sialylated oligosaccharide that is widely present in natural glycoconjugates, such as the surfaces of glycoproteins and glycolipids. As a core molecule in cell recognition, signaling and immune regulation, it plays an indispensable role in biological systems. With the rapid development of glycobiology and biomedicine, this well-defined oligosaccharide has become a basic raw material for exploring disease mechanisms and developing new therapies and diagnostic tools, especially in the fields of infectious diseases, cancer and inflammation.

Chemical Information

Chemical name: N-acetylneuramidyl-(2-6)-galactose (sodium salt)

Common name: 6-Sialyl galactose (sodium salt)

Chemical formula: C17H29NO14

Molecular weight: 471.41 g/mol

CAS number: 35259-23-5

Category: Oligosaccharides

Structural features

6-Sialogalactose (sodium salt) is composed of N-acetylneuraminic acid (sialic acid) connected to galactose through an α-2,6-glycosidic bond. This specific structure gives it unique biological activities and functions:

Key glycosidic bond connection: Unlike common sugar chain connections, sialic acid is connected to galactose through α-2,6 bonds. This connection is highly conserved in nature and is commonly found in glycoproteins and glycolipids on the surface of mammalian cells, and is involved in mediating cell-cell and cell-matrix interactions.

Enhanced biorecognition capabilities: Sialic acid residues are negatively charged and can act as receptors or ligands to specifically bind to proteins such as selectins, lectins, and viral hemagglutinins. This binding relies on the configuration of the α-2,6 bond, which makes 6-sialogalactose have high affinity and selectivity in molecular recognition, affecting processes such as immune response, pathogen infection, and tumor metastasis.

Stable chemical properties: As a sodium salt form, this compound has good solubility and stability in aqueous solutions, making it convenient for experimental operations and biological applications. Its well-defined chemical structure allows precise synthesis and modification, providing a reliable platform for the design of glycosylation probes or drugs.

Main applications and advantages

1. Core tools for glycobiology and basic research

6-Sialyl galactose (sodium salt) is an ideal molecule to analyze the sialylation modification function. In basic research it is used for:

Sugar-protein interaction research: Uncovering the binding mechanism of sialic acid to receptors (such as influenza virus hemagglutinin or immune checkpoint proteins) through surface plasmon resonance, nuclear magnetic resonance or crystallography techniques can help understand the molecular basis of infection, inflammation and cancer.

Enzyme analysis: Used as a substrate or inhibitor to study the activity of sialyltransferase or sialidase. These enzymes are crucial in the synthesis and degradation of sugar chains, and their dysregulation is associated with a variety of diseases.

Cell signaling exploration: By simulating the structure of natural sugar chains, we explore the role of sialylation in cell adhesion, migration, and differentiation, providing insights for developmental biology and neuroscience.

2. Drug development and optimization of treatment strategies

In the field of biomedicine, the application of 6-sialogalactose (sodium salt) is promoting the progress of innovative treatments:

Vaccine design and immune regulation: Sialyl oligosaccharides are targets for pathogens (such as viruses and bacteria) to attach to host cells. Based on their structure, anti-adhesion agents or glycosylated vaccines can be developed to prevent influenza, Helicobacter pylori infection, etc. In addition, sialic acid plays a role in immune cell regulation, and the compound could be used to design anti-inflammatory or autoimmune disease treatment strategies.

Cancer therapeutic target: Tumor cells often overexpress sialylated sugar chains to evade immune surveillance and promote metastasis. 6-Sialyl galactose can be used as a probe to screen inhibitors targeting sialic acid-lectin interactions or to develop glycosylation-directed tools in CAR-T cell therapy.

Nucleic Acid Drug Delivery Systems: In siRNA or mRNA therapeutics, sialylation modification improves targeting and biocompatibility of lipid nanoparticles, reduces immunogenicity by mimicking natural glycoconjugates, and enhances cell-specific uptake.

3. Development of diagnostic tools and biomarkers

Altered sialylation patterns are closely associated with multiple disease states, making 6-sialogalactose (sodium salt) a strong candidate for diagnostic applications:

Disease biomarker research: In cancer, neurodegenerative diseases, or infections, abnormal levels or structures of sialylated oligosaccharides in body fluids can serve as early diagnostic indicators. This compound is used in standardized detection methods, such as mass spectrometry or liquid chromatography analysis, to improve diagnostic accuracy and sensitivity.

Imaging probe construction: Through radioactive or fluorescent labeling, 6-sialogalactose can be used for in vivo imaging to visualize glycosylation changes in tumors or inflammatory sites, providing a means to non-invasively monitor disease progression.

Conclusion

6-Sialyl galactose (sodium salt) is not just a simple sugar molecule, it is a bridge connecting glycoscience and biomedicine. From revealing the fundamental processes of life to developing next-generation treatments, their structural specificity and versatility provide endless possibilities for scientific research and medical innovation. Today, when precision medicine and personalized treatment are becoming increasingly important, a deep understanding of the mechanism of sialylation modification will accelerate breakthroughs in infectious disease prevention and control, cancer intervention and chronic disease management, and have a profound impact on human health.

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