Glycoprofiling Investigation of Hepatocellular Carcinoma Cell Surface With Lectin Microarray
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This work was supported by a grant from The National Natural Science Foundation of China (20672144)

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    Abstract:

    To obtain information of glycan changes on cell surface in hepatocarcinoma progress, a high throughout lectin microarray was established to detect glycans on cell surface based on the principle of lectin to glycan binding affinity. Cells extracted from normal or model mice tissues and H22 cell lines were labeled with fluorescence and caught by lectins through the distinctive binding specificities, bound cells were directly detected by a laser fluorescence scanner to obtain the glycome profile of the cell surface according to the distinctive binding specificities of lectins on microarray and the appearance of bound cells were observed under the microscope. The optimal blocking buffer, optimal incubation time and temperature, optimal cell concentration were studied and specificity of lectin microarray was validated through the mannose blocking assay, flow cytometry and diffenrent blood type erythrocyte. High level of diversity of glycoprofiling was present between normal and hepatocarcinoma mice, only PSA, DSL, STL, NPL captured cells in normal group, all lectin captured cells except LTL and DBA in hepatocarcinoma group , the result show that Sia, GluNAc, GalNAc, Man and Gal increased on hepatocarcinoma cell surface. These results imply that these carbohydrates and correlate glycoprotein may play key roles in occurrence and development in liver canceration. The lectin microarray established a stable, real-time and throughout method and provides a novel strategy for study profiling changes of the cell surface glycome on tumor metastasis.

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HE Qun, LI Chun-Hui, PAN Zhong-Cheng, WANG Tian-Jiao, ZHANG Yu-Kui, ZHONG Lian-Sheng, WANG Shao-Cheng, ZHAO Yu-Jie. Glycoprofiling Investigation of Hepatocellular Carcinoma Cell Surface With Lectin Microarray[J]. Progress in Biochemistry and Biophysics,2010,37(3):269-277

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History
  • Received:October 23,2009
  • Revised:December 22,2009
  • Accepted:
  • Online: December 29,2009
  • Published: March 20,2010