Glycans expression behavior of mammalian cell surfaces provides valuable information for biological functions.[1] Especially, cancerous cells have considerably different from structural formation and over-expression of glycans compared with noncancerous cells. Such changes participate in metastasis by altering cancer cell proliferation, adhesion, differentiation, invasion, angiogenesis and immunity. Therefore, the alterations in cancer cell surface glycans have potential for early diagnosis and treatment. There have been tremendous efforts to develop comprehensive profiling methods for the cellular glycomes via mass spectrometry (MS), high-performance liquid chromatography (HPLC) and frontal affinity chromatography (FAC). Although the analytical technologies provide detailed quantitative and functional information about the glycans, critical challenges in the separation of cell surface glycans remain, such as time-consuming and cumbersome procedures as well as the need for a large number of cells.This article describes assay of expressed cell surface glycans using biotin-lectin (biotinylated lectin) and SA-QD (streptavidin-QD) on combined cell patterning for reliable and readily quantifiable assay that to enable high-throughput and automated assay. The SA-QD can bind to biotin-lectin combined with cell surface glycans which lectins specifically bind to glycans. The intensity of QDs shows clear difference between cancerous and normal cells depends on amount of expressed glycans on cell surface where evaluated with various lectins for various cell lines. This assay method performed with patterned cells obtained reliable and consistent quantification data. Thus, the cell surface glycan assay using biotin-lectin and SA-QD based on patterned cells provided useful assay tools for high throughput cancer diagnostics and cellular physiological studies
키워드
Glycan ProfilingCell patterningQuantum dots
저자
Heon-Ho JEONG [ Dept. of Chemical Engineering, Chungnam National University, 305-764. ]
Chang-Soo LEE [ Dept. of Chemical Engineering, Chungnam National University, 305-764. ]
한국생물공학회 [The Korean Society for Biotechnology and Bioengineering]
설립연도
1984
분야
공학>생물공학
소개
이 법인은 생물 공학의 발전과 보급에 이바지하고, 회원 상호 간의 연구 협력과 친목을 도모함을 목적으로 한다
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