A Cis-Membrane FRET-Based Method for Protein-Specific Imaging of Cell-Surface Glycans | |
Lin, Wei ; Du, Yifei ; Zhu, Yuntao ; Chen, Xing | |
刊名 | journal of the american chemical society
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2014 | |
关键词 | TGF-BETA RECEPTOR LINKED GLYCOSYLATION TRPV5 CHANNEL LIVING CELLS ACTIVATION INTEGRINS ADHESION BINDING PROBES CYCLOADDITION |
DOI | 10.1021/ja410086d |
英文摘要 | Metabolic labeling of glycans with chemical reproters (e.g., alkyne or azide) in conjunction with bioorthogonal chemistry is a powerful tool for imaging glycome; however, this method lacks protein-specificity and therefore is not applicable to imaging glycosylation of a specific protein of interest (POI). Here we report the development of a cis-membrane FRET-based methodology that allows protein-specific imaging of glycans on live cells. We exploit metabolic glycan labeling in conjunction with site-specific protein labeling to simultaneously install a FRET acceptor and a donor onto the glycans and the extracellular terminal of the protein of interest, respectively. The intramolecular donor-acceptor distance for the POI falls within the range for effective FRET, whereas the intermolecular FRET is disfavored since the excess acceptors on other proteins are distant from the donor. We demonstrated the capability of this cis-membrane FRET imaging method by visualizing the sialylation of several important cell surface receptors including integrin alpha(x)beta(2), epidermal growth factor receptor, and transforming growth factor-beta receptor type I. Furthermore, our imaging experiments revealed that the sialylation might be important for beta(2) integrin activation. Our methodology should enable the live-cell studies on how glycosylation regulates the functions and dynamics of various cell-surface proteins.; Chemistry, Multidisciplinary; SCI(E); EI; 9; ARTICLE; xingchen@pku.edu.cn; 2; 679-687; 136 |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.pku.edu.cn/handle/20.500.11897/216438] ![]() |
专题 | 化学与分子工程学院 生命科学学院 |
推荐引用方式 GB/T 7714 | Lin, Wei,Du, Yifei,Zhu, Yuntao,et al. A Cis-Membrane FRET-Based Method for Protein-Specific Imaging of Cell-Surface Glycans[J]. journal of the american chemical society,2014. |
APA | Lin, Wei,Du, Yifei,Zhu, Yuntao,&Chen, Xing.(2014).A Cis-Membrane FRET-Based Method for Protein-Specific Imaging of Cell-Surface Glycans.journal of the american chemical society. |
MLA | Lin, Wei,et al."A Cis-Membrane FRET-Based Method for Protein-Specific Imaging of Cell-Surface Glycans".journal of the american chemical society (2014). |
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