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CHoMP: a chemoenzymatic histology method using clickable probes.

ABSTRACT: The characterization of aberrant glycosylation patterns in biopsied patient samples represents a remarkable challenge for scientists and medical doctors due to the lack of specific methods for detection. Here, we report the development of a histological method, dubbed CHoMP-chemoenzymatic histology of membrane polysaccharides-for analyzing glycosylation patterns in mammalian tissues. This method exploits a recombinant glycosyltransferase to transfer a monosaccharide analogue equipped with a chemical handle to a specific cell-surface glycan target, which can then be derivatized with imaging probes by using bioorthogonal click chemistry for visualization. We applied CHoMP to survey changes in expression of N-acetyllactosamine (LacNAc) in human samples from patients afflicted with lung adenocarcinoma and observed a sharp decrease in expression levels between normal and early grade tumors, thus suggesting a potential application of this technique in early cancer diagnosis.

SUBMITTER: Rouhanifard SH

PROVIDER: S-EPMC4278937 | biostudies-literature | 2014 Dec

REPOSITORIES: biostudies-literature

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CHoMP: a chemoenzymatic histology method using clickable probes.

Rouhanifard Sara H SH López-Aguilar Aimé A Wu Peng P

Chembiochem : a European journal of chemical biology 20141117 18

The characterization of aberrant glycosylation patterns in biopsied patient samples represents a remarkable challenge for scientists and medical doctors due to the lack of specific methods for detection. Here, we report the development of a histological method, dubbed CHoMP-chemoenzymatic histology of membrane polysaccharides-for analyzing glycosylation patterns in mammalian tissues. This method exploits a recombinant glycosyltransferase to transfer a monosaccharide analogue equipped with a chem ...[more]

PMID: 25403986

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