An antibody-free assay for simultaneous capture and detection of glycoproteins by surface enhanced Raman spectroscopy

Dan Xie, Wenfeng Zhu, H Cheng, Zhiyi Yao, Min Li, Yarui Zhao

Physical Chemistry Chemical Physics · 2018 · 29 citations · 27 references

Concepts

Abstract

A sensitive, and single step reaction assay of glycoproteins in antibody-free mode was proposed on a 4-mercapto-phenylboronic acid (4-MPBA) modified silver nanoparticle film (AgNF) by using surface enhanced Raman scattering (SERS). 4-MPBA/AgNF was designed both as a glycoprotein-specific recognition biosensor and as a Raman reporter for the SERS platform. Variation in the ratio I1574/I1586 for 4-MPBA/AgNF in response to glycoprotein capture constitutes the SERS assay which exhibits high sensitivity and selectivity against nonglycoproteins and is shown to function in complex samples.

References

27