Profiling surface glycans on live cells and tissues using quantum dot-lectin nanoconjugates.
The surface of mammalian cells is densely coated with complex glycans, which are directly involved in cell-cell or cell-protein interactions that trigger various biological responses. Here, we present a novel glycomics approach that uses quantum dot (Qdot)-lectin nanoconjugates to interrogate the surface glycans of tissues and patterned cells. Our approach allows highly sensitive in situ monitoring of specific lectin-glycan interactions and quantitative information on surface glycans for each examined cell line and tissue. The results clearly show significant changes in glycosylation for each cell line and tissue sample. We expect that these results will be applicable in cancer diagnostics and promote the development of new analytical tools for glycomics.
Department of Chemical Engineering, Chungnam National University, Yuseong-gu, Deajeon 305-764, South Korea.
Heon-Ho
HH
Jeong
Yun-Gon
YG
Kim
Sung-Chan
SC
Jang
Hyunmin
H
Yi
Chang-Soo
CS
Lee
D002460:Cell Line; D004129:Dimethylpolysiloxanes / Q000737:chemistry; D006031:Glycosylation; D045325:HCT116 Cells; D057809:HEK293 Cells; D006367:HeLa Cells; D056945:Hep G2 Cells; D006801:Humans; D037102:Lectins / Q000737:chemistry* / Q000378:metabolism; D061986:MCF-7 Cells; D008856:Microscopy, Fluorescence; D011134:Polysaccharides / Q000378:metabolism*; D045663:Quantum Dots; D046888:Tissue Array Analysis / Q000295:instrumentation / Q000379:methods
D004129:Dimethylpolysiloxanes; D037102:Lectins; D011134:Polysaccharides; C013830:baysilon