2-Pentynylamidomannose: a core chemical probe for metabolic labeling studies 935658-94-9

2-[(1-pentynyl)amino]-2-deoxy-D-mannose is a carefully designed metabolic sugar probe molecule that plays a key role in the fields of glycobiology and cell metabolism research. Its structure combines the basic skeleton of natural mannose with reactive alkynyl tags, making it a powerful tool for visualizing, tracking, and analyzing dynamic glycosylation processes in vivo.

Chemical Information

Chemical name: 2-deoxy-2-[(1-oxo-4-pentyn-1-yl)amino]-D-mannopyranose

Common name: 2-Pentynylamidomannose

Chemical formula: C11H17NO6

Molecular weight: 259.26 g/mol

CAS number: 935658-94-9

Category: Metabolic Probe Reagents

Structural features

The design of this molecule cleverly combines biocompatibility with chemical orthogonality:

l Mannose skeleton: D-mannose is used as the basic structure to ensure that it can be recognized and utilized by the cell's sugar metabolism pathway, especially as a substrate precursor for the N-linked glycosylation pathway.

l Bioorthogonal functional group: The pentynyl group (-C≡CH) introduced at the end of the modified amido group is its core functional unit. The alkyne group remains stable and inert under physiological conditions and does not interfere with normal biological processes, but can be efficiently and specifically covalently linked to fluorescent dyes, biotin or solid-phase carriers carrying azide groups through copper-catalyzed azide-alkyne cycloaddition reactions.

l Engineered linking bond: The pentynyl acyl group is connected to the 2-amino group of sugar amine through an amide bond, forming a stable linking arm, ensuring the integrity of the probe in the cellular metabolic environment.

Main applications and advantages

Visualization and identification of cell surface glycans

As a metabolic probe, this molecule can be taken up by cells and integrated into newly synthesized glycoproteins and glycolipids, replacing part of the natural mannose. Subsequently, click chemistry is used to fluorescently label the integrated alkynyl tag, which enables high-resolution fluorescence imaging of specific glycoforms on the cell surface (such as high-mannose N-glycans), or systematic identification of the glycosylated proteome through affinity purification.

Dynamic glycosylation process tracking

This probe makes it possible to observe the glycosylation process in real time and dynamically. By controlling the incubation time of the probe, researchers can perform "pulse-chase" labeling of newly synthesized glycoconjugates within a specific time window, thereby analyzing the spatial and temporal patterns of glycosylation, turnover rate, and its changes in life activities such as cell differentiation and signal transduction.

Research on disease-related glycobiology

Abnormal glycosylation is closely related to cancer, immune diseases and infectious diseases. Using this probe, we can accurately compare the differences in surface glycosylation patterns between normal and diseased cells (such as tumor cells), discover disease-specific glycosylation markers, and provide a unique research method for exploring its pathological mechanisms and developing targeting strategies.

Aids in drug development and screening

In the screening and evaluation system of glycosyltransferase inhibitors or glucose metabolism regulators, this probe can be used as a key reporting tool to intuitively and quickly evaluate the inhibitory or regulatory effect of candidate compounds on specific glycosylation pathways by quantifying changes in probe incorporation levels.

Conclusion

2-Pentynylamidomannose represents an elegant idea in the development of chemical biology tools that seamlessly bridges classic sugar metabolism with modern click chemistry techniques. As an efficient and specific metabolic probe, it has greatly promoted the profound transformation of glycoscience from static structural description to dynamic functional analysis, providing an indispensable chemical perspective and research power for basic life science exploration and cutting-edge drug development.

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