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CHoMP: A Chemoenzymatic Histology Method Using Clickable Probes #MMPMID25403986
Rouhanifard SH; López-Aguilar A; Wu P
Chembiochem 2014[Dec]; 15 (18): 2667-73 PMID25403986show ga
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 their 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 analog equipped with a chemical handle to a specific cell-surface glycan target, which can then be derivatized with imaging probes 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, suggestion a potential application of this technique in early cancer diagnosis.