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首页> 外文期刊>Bioorganic and Medicinal Chemistry Letters >Cell surface glycoproteomic analysis of prostate cancer-derived PC-3 cells.
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Cell surface glycoproteomic analysis of prostate cancer-derived PC-3 cells.

机译:前列腺癌衍生的PC-3细胞的细胞表面糖蛋白组学分析。

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摘要

Most clinically approved biomarkers of cancer are glycoproteins, and those residing on the cell surface are of particular interest in biotherapeutics. We report a method for selective labeling, affinity enrichment, and identification of cell-surface glycoproteins. PC-3 cells and primary human prostate cancer tissue were treated with peracetylated N-azidoacetylgalactosamine, resulting in metabolic labeling of cell surface glycans with the azidosugar. We used mass spectrometry to identify over 70 cell surface glycoproteins and biochemically validated CD146 and integrin beta-4, both of which are known to promote metastatic behavior. These results establish cell-surface glycoproteomics as an effective technique for discovery of cancer biomarkers.
机译:大多数临床上认可的癌症生物标志物是糖蛋白,而驻留在细胞表面的那些糖蛋白在生物治疗学中尤为重要。我们报告了选择性标记,亲和力丰富和细胞表面糖蛋白鉴定的方法。用过乙酰化的N-叠氮基乙酰半乳糖胺处理PC-3细胞和原发性人类前列腺癌组织,从而用叠氮糖对细胞表面聚糖进行代谢标记。我们使用质谱法鉴定了70多种细胞表面糖蛋白,并通过生物化学方法验证了CD146和整联蛋白beta-4,它们均能促进转移行为。这些结果确立了细胞表面糖蛋白组学作为发现癌症生物标志物的有效技术。

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