Nanoparticle-based energy transfer for rapid and simple detection of protein glycosylation
Glycan moiety of glycoproteins plays an essential role in its biological activity in vivo, and the analysis of glycosylation is of great importance in the development of protein therapeutics. In this study, we report a rapid and simple detection of protein glycosylation based on the fluorescence resonance energy transfer (FRET) between concanavalin A-conjugated gold nanoparticles (ConA-AuNPs) and dextran-conjugated quantum dots (Dex-QDs). The increased photoluminescence (PL) signals of Dex-QDs due to the competitive inhibition of glycoproteins were well correlated with the glycosylation chain length of glucose oxidases as well as the mannosylation degree of bovine serum albumin (BSA). The parallel analysis of the diversely mannosylated BSAs using an image analyzer further demonstrated the potential of this new technique in high-throughput screening of glycoprotein and carbohydrate therapeutics.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 898633
- Report Number(s):
- PNNL-SA-49712; 400403809
- Journal Information:
- Angewandte Chemie International Edition, 45(47):7959-7963, Journal Name: Angewandte Chemie International Edition, 45(47):7959-7963
- Country of Publication:
- United States
- Language:
- English
Similar Records
Identification of lectin-like substances recognizing galactosyl residues of glycoconjugates on the plasma membrane of marrow sinus endothelium
Fluorescent Labeling of Protein Using Blue-Emitting 8-Amino-BODIPY Derivatives