CAS: 1611491-03-2—Precision chemical probes for glycobiology research

2-Acetamido-6-azido-2,6-dideoxy-D-glucose is a carefully designed metabolic probe reagent whose unique chemical structure makes it an indispensable tool for exploring the biosynthesis and function of cell surface glycoconjugates. As a key molecule at the intersection of glycobiology and chemical biology, it provides powerful technical means for visualizing, identifying, and studying complex glycosylation processes.

Chemical Information

Chemical name: 2-acetamido-2-deoxy-6-azido-6-deoxy-D-glucose

Common name: 2-Acetamido-6-azido-2,6-dideoxy-D-glucopyranose

Chemical formula: C₈H₁₄N₄O₅

Molecular weight: 246.22 g/mol

CAS number: 1611491-03-2

Category: Metabolic Probe Reagents

Structural features

The design of this molecule cleverly combines biological compatibility with chemical selectivity:

Biomimetic skeleton: Its core retains the basic skeleton of the D-glucose pyran ring, especially the acetylamino group at the 2-position, which is consistent with the naturally occurring N-acetylglucosamine (GlcNAc). This allows it to be recognized and utilized by intracellular glycosylation metabolic pathways (such as the precursor pathway of sialylation), thereby effectively integrating into newly synthesized glycoproteins and glycolipids.

Azide labeling handle: At the 6-position hydroxyl group, the hydrogen atom is replaced by an azide group (-N₃). This azide group is highly chemically inert and bioorthogonal under physiological conditions and does not interfere with normal cell metabolism. Its core value is that it can be specifically covalently linked to fluorescent dyes, biotin or other reporter molecules with an alkynyl group (-C≡CH) through an efficient copper-catalyzed azide-alkyne cycloaddition reaction (CuAAC, or click chemistry).

Metabolic inertness: The deoxy modification at positions 2 and 6, while providing key functional groups, also avoids further metabolism by certain glycosidases, enhancing its stability as a terminal probe.

Main applications and advantages

Visualization and imaging of cell surface glycosylation

This molecule can be taken up by cells as an analogue of GlcNAc and metabolically incorporated into glycan structures on the cell surface. Subsequently, click chemistry is used to connect fluorescent probes to achieve highly specific and high signal-to-noise ratio fluorescent labeling on living or fixed cells. This allows researchers to observe the distribution of specific glycosylation processes on the cell membrane, dynamic changes, and their association with cell states (e.g., differentiation, canceration) in real time or endpoint.

Enrichment and identification of glycoproteomics

In proteomics research, its azide tag can be used to perform click chemical connection with the alkyne group on the solid support, thereby specifically enriching those newly synthesized glycoproteins or glycopeptides labeled by the probe. Combined with mass spectrometry analysis technology, glycoproteins that change under specific physiological or pathological conditions can be identified on a large scale and the regulatory network and function of glycosylation modification can be revealed.

Drug target discovery and development platform

Abnormal glycosylation is a hallmark of many diseases, especially cancer. This probe can be used to screen and identify glycosylation pathways or unique sugar epitopes that are abnormally active in diseased cells. These findings help reveal new disease biomarkers and provide important molecular targets and research foundations for the development of glycosylation-targeting antibodies, small molecule inhibitors, or antibody-drug conjugates.

Study the glycosylation biosynthetic pathway

As a specific metabolic precursor, it helps scientists track the biosynthetic pathway of specific types of glycans (such as glycans with terminal sialic acid), analyze the activity and function of related glycosyltransferases, and evaluate the effects of metabolic pathway inhibitors.

Conclusion

2-Acetamido-6-azido-2,6-dideoxy-D-glucose perfectly embodies the design concept of chemical biology: through minimal but functional modification of natural molecules, create sophisticated tools that can "silently" enter living systems and "report" information at designated moments. It is not only a microscope that deciphers the sugar code and elucidates the complex role of glycosylation in health and disease, but also serves as a bridge between basic discovery and sugar-related drug development, continuing to promote the development of glycoscience into deeper and more application-oriented fields.

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