CAS: 20972-29-6—Glycobiology and precision medicine

In the complex network of life sciences, sugar chains serve as key information carriers on the cell surface and are widely involved in cell recognition, immune regulation and disease development. 2-acetamido-2-deoxy-3-O-(Β-D-galactopyranosyl)-D-galactopyranose, referred to as Galβ1-3GalNAc, is a common disaccharide structure in natural glycoproteins and glycolipids and is known as one of the cornerstones of glycobiology research. Its unique chemical properties and biological functions are driving cross-field breakthroughs from basic science to biomedical applications, providing core materials for a new generation of diagnostic tools and treatment strategies.

Chemical Information

Chemical name: 2-acetamido-2-deoxy-3-O-(B-D-galactopyranosyl)-D-galactopyranosyl

Common name: BETA-D-GAL-[1->3]-D-GALNAC

Chemical formula: C14H25NO11

Molecular weight: 383.35 g/mol

CAS number: 20972-29-6

Category: Oligosaccharides

Structural features

Specific glycosidic bond connection: This disaccharide connects galactose (Gal) and N-acetylgalactosamine (GalNAc) through β-1,3 glycosidic bond to form a stable spatial conformation. This connection method is highly conserved in natural sugar chains, giving the structure a precise three-dimensional orientation, allowing it to be specifically recognized by proteins such as lectins and antibodies, thereby mediating cell-cell adhesion, signal transduction and molecular interactions.

Multifunctional chemical groups: The acetyl group on N-acetylgalactosamine and the free hydroxyl group on galactose not only enhance the hydrogen bond forming ability, but also provide modification sites. This property facilitates chemical derivatization and can be used to synthesize complex sugar chains or couple molecules such as fluorescent labels and biotin, expanding its application in probe design and drug delivery.

Biocompatibility and stability: As a naturally occurring oligosaccharide unit, its structure is compatible with the biological environment and is not easily degraded by common glycosidases. Therefore, it shows good stability in in vitro studies and in vivo simulations, and is suitable for long-term experiments and clinical application development.

Main applications and advantages

Core tools for glycobiology and glycomics research

When analyzing the impact of glycosylation on protein function, this compound serves as a standard reference and is widely used in mass spectrometry analysis, high-performance liquid chromatography and nuclear magnetic resonance technology to help map sugar chains on the cell surface. By simulating the structure of natural sugar chains, scientists can deeply explore the regulatory mechanisms of glycosylation in cell differentiation, pathogen infection, and cancer metastasis, providing a basis for the establishment of sugar-related disease models.

Antigen candidates for immunotherapy and vaccine design

Many tumor cells overexpress the Galβ1-3GalNAc structure on their surface, forming tumor-associated carbohydrate antigens such as Tn antigen. Sugar vaccines or antibody drugs based on this design can stimulate specific immune responses and target the elimination of malignant cells. In addition, in models of autoimmune diseases and inflammation, this disaccharide structure can be used to modulate immune cell activity and develop new immune modulators.

Molecular probes for infectious disease research

Pathogens such as bacteria and viruses often use host sugar chain receptors to invade. This compound can simulate cell surface sugar chains and is used to study pathogen adhesion mechanisms and screen compounds that inhibit pathogen binding. In the development of anti-infective drugs, it can be used as a target model to help develop new therapies that block infection pathways.

Validation platform for diagnostic biomarkers

In a variety of disease states, such as cancer, inflammation, and metabolic disorders, abnormal changes occur in the levels of specific sugar chains in body fluids or tissues. This disaccharide structure can be used to prepare detection kits or calibration standards to achieve early diagnosis and disease monitoring. For example, in ovarian and colon cancer research, its derivatives have been explored as serum biomarkers to improve diagnostic sensitivity and specificity.

Enzymology and synthetic biology applications

As a natural substrate of glycosyltransferase, this compound is used for enzyme activity measurement, inhibitor screening and enzyme engineering to promote the process of industrial enzyme-catalyzed synthesis of sugar chains. In the field of synthetic biology, it helps construct artificial glycoproteins or glycolipids for cell surface engineering and biomanufacturing, expanding the potential of glycosylation in biotechnology.

Conclusion

From the microscopic mechanism of cell communication to the macroscopic application of disease treatment, Galβ1-3GalNAc, as a key unit in the world of sugar chains, not only deepens the understanding of the code of life, but also becomes a bridge connecting basic research and clinical innovation. With the rapid development of sugar science and technology, this disaccharide with a simple structure but rich functions will continue to empower precise diagnosis, targeted therapy and synthetic biology, opening up new frontiers for human health.

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