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Cited by 319

The DOI matches its Crossref record; 32 of the 32 references it cites were found in a registry or an index.

Alkynyl sugar analogs for the labeling and visualization of glycoconjugates in cells

Open access
Hsu, Tsui-Ling, Hanson, Sarah R., Kishikawa, Kuniyuki, Wang, Sheng-Kai, Sawa, Masaaki, Wong, Chi-Huey·2007·Proceedings of the National Academy of Sciences

Abstract

Developing tools for investigating the cellular activity of glycans will help to delineate the molecular basis for aberrant glycosylation in pathological processes such as cancer. Metabolic oligosaccharide engineering, which inserts sugar-reporting groups into cellular glycoconjugates, represents a powerful method for imaging the localization, trafficking, and dynamics of glycans and isolating them for glyco-proteomic analysis. Herein, we show that the alkyne-reporting group can be incorporated into cellular glycans. The alkyne group is a small, inert, bio-orthogonal handle that can be chemoselectively labeled by using the Cu(I) catalyzed [3 + 2] azide-alkyne cycloaddition, or click chemistry. Alkynyl sugar monomers, based on fucose (Fuc) and N -acetylmannosamine (ManNAc), were incorporated into fucosylated and sialylated glycans in several cancer cell lines, allowing for cell surface and intracellular visualization of glycoconjugates, as well as, observation of alkyne-bearing glycoproteins. Similarly to our previous results with an azido Fuc/alkynyl probe system, we demonstrated that click-activated fluorogenic probes are practical tools for efficiently and selectively labeling alkynyl-modified glycans. Because Fuc and sialic acid are terminal glycan residues with a notably increased presence in many tumors, we hope that our method will provide useful information about their roles in cancer and ultimately can be used for diagnostic and therapeutic purposes.

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Metadata

Authors
Hsu, T.-L., Hanson, S. R., Kishikawa, K., Wang, S.-K., Sawa, M., & Wong, C.-H.
Venue
Proceedings of the National Academy of Sciences
Published
2007-02-20
Volume
104
Issue
8
Pages
2614-2619
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W4248522153
Cited by
319
References
32
FWCI
11.98
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Alkynyl sugar analogs for the labeling and visualization of glycoconjugates in cells. https://app.cochat.ai/papers/10.1073/pnas.0611307104
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Hsu, T.-L., Hanson, S. R., Kishikawa, K., Wang, S.-K., Sawa, M., & Wong, C.-H. (2007). Alkynyl sugar analogs for the labeling and visualization of glycoconjugates in cells. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0611307104

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