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Identification and analysis of altered α1,6‐fucosylated glycoproteins associated with hepatocellular carcinoma metastasis
Author(s) -
Dai Zhi,
Liu YinKun,
Cui JieFeng,
Shen HuaLi,
Chen Jie,
Sun RuiXia,
Zhang Yu,
Zhou XinWen,
Yang PengYuan,
Tang ZhaoYou
Publication year - 2006
Publication title -
proteomics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.26
H-Index - 167
eISSN - 1615-9861
pISSN - 1615-9853
DOI - 10.1002/pmic.200500707
Subject(s) - hepatocellular carcinoma , metastasis , glycoprotein , identification (biology) , cancer research , proteomics , biology , oncology , computational biology , medicine , cancer , microbiology and biotechnology , biochemistry , gene , botany
Tumor metastasis might be associated with the expression levels of cellular glycoproteins and the alteration of their glycan parts. In order to screen the aberrantly α1,6‐fucosylated glycoproteins related to hepatocellular carcinoma (HCC) metastasis, a high‐throughput glycomic approach which consisted of 2‐DE, electronic transfer of proteins, lectin affinity blot and precipitation, and MALDI‐TOF‐MS/MS, was established. Lens culinaris agglutinin (LCA) affinity glycoprotein profiles of higher and lower metastatic HCC cell lines were compared and analyzed. Seven out of 34 identified glycoproteins were differentially displayed; they were cytokeratin 8 (CK8), annexin I, annexin II, heterogeneous nuclear ribonucleoprotein A/B, PDZ and LIM domain 1, RNA‐binding motif protein 4, and poly(rC)‐binding protein 1. On comparison with Hep3B, CK8 showed a higher affinity to Ricinus communis agglutinin 1 (RCA‐I) and LCA, and annexin I presented a higher affinity to LCA and Con A by the lectin‐binding assay. Furthermore, the up‐regulation of CK8, annexin I, and annexin II were found by Western blot and immunofluorescence analysis in higher metastatic HCC cell lines. This implied that the alteration of CK8, annexin I, and annexin II both in their expression levels and their glycan parts might be related to metastatic ability, and play a critical role in the process of HCC metastasis.