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Published March 14, 2012 | Supplemental Material + Published
Journal Article Open

Chemoenzymatic Probes for Detecting and Imaging Fucose-α(1-2)-galactose Glycan Biomarkers

Abstract

The disaccharide motif fucose-α(1-2)-galactose (Fucα(1-2)Gal) is involved in many important physiological processes, such as learning and memory, inflammation, asthma, and tumorigenesis. However, the size and structural complexity of Fucα(1-2)Gal-containing glycans have posed a significant challenge to their detection. We report a new chemoenzymatic strategy for the rapid, sensitive detection of Fucα(1-2)Gal glycans. We demonstrate that the approach is highly selective for the Fucα(1-2)Gal motif, detects a variety of complex glycans and glycoproteins, and can be used to profile the relative abundance of the motif on live cells, discriminating malignant from normal cells. This approach represents a new potential strategy for biomarker detection and expands the technologies available for understanding the roles of this important class of carbohydrates in physiology and disease.

Additional Information

© 2012 American Chemical Society. ACS AuthorChoice. Received: December 2, 2011. Publication Date (Web): February 16, 2012. We thank Rochelle Diamond at the Caltech Flow Cytometry Cell Sorting Facility, Dr. Mona Shahgholi in the CCE Division Mass Spectrometry Facility, and The Consortium for Functional Glycomics, Core D and H (NIGMS GM62116), and also Dr. Peng George Wang for providing the BgtA vector. This work was supported by grants from the NIH (R01 GM084724 to L.C.H.−W. and NIH/NRSA 5T32 GM07616 to C.K. and J.C.).

Attached Files

Published - Chaubard2012p17851J_Am_Chem_Soc.pdf

Supplemental Material - ja211312u_si_001.pdf

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