Glycan Moieties as Bait to Fish Plasma Membrane Proteins

详细信息    查看全文

• 作者：Fei Fang ; Qun Zhao ; Zhigang Sui ; Yu Liang ; Hao Jiang ; Kaiguang Yang ; Zhen Liang ; Lihua Zhang ; Yukui Zhang
• 刊名：Analytical Chemistry
• 出版年：2016
• 出版时间：May 17, 2016
• 年：2016
• 卷：88
• 期：10
• 页码：5065-5071
• 全文大小：488K
• 年卷期：0
• ISSN：1520-6882

文摘

Plasma membrane proteome analysis is of significance for screening candidate biomarkers and drug targets. However, due to their low abundance and lack of specific groups that can enable their capture, the plasma membrane proteins (PMPs) are under-represented. On the basis of the fact that PMPs are embedded in or anchored to the phospholipid bilayer of the plasma membrane and the glycan moieties of proteins and lipids located on the plasma membrane are exposed outside of the cell surface, we proposed a strategy to capture PMPs, termed as glycan moieties-directed PMPs enrichment (GMDPE). With the glycan moieties exposed outside of the cells as bait to ensure the selectivity and the phospholipid bilayer as raft to provide the sensitivity, we applied this strategy into the plasma membrane proteome analysis of HeLa cells, and in total, 772 PMPs were identified, increased by 4.5 times compared to those identified by the reported cell surface biotinylation method. Notably, among them, 86 CD antigens and 16 ion channel proteins were confidently identified. All these results demonstrated that our proposed approach has great potential in the large scale plasma membrane proteome profiling.