| Literature DB >> 24434497 |
Xiaoming Ma1, Zhonghui Chen1, Jin Zhou1, Wen Weng2, Ou Zheng1, Zhenyu Lin3, Longhua Guo1, Bin Qiu1, Guonan Chen1.
Abstract
A novel portable biosensor for sensitive and selective detection of platelet-derived growth factor-BB (PDGF-BB) had been developed based on the specific recognition between aptamer and protein using a personal glucose meter (PGM) as readout. In the presence of PDGF-BB, the primary aptamer of PDGF-BB which is bound to the surface of streptavidin magnespheres paramagnetic particles (SA-PMPs) reacts quantitatively with invertase-functionalized secondary aptamer of PDGF-BB to form a stable complex, resulting in the attachment of invertase on the SA-PMPs. Subsequently, the invertase catalyzes the hydrolysis of sucrose to produce a large amount of glucose and quantitative readout by the PGM. The enhanced signal of the PGM has a relationship with the concentration of PDGF-BB in the range of 1.0 × 10(-14) M~3.16 × 10(-12) M, and the detection limit is 2.9 fM. The proposed portable biosensor had been successfully applied to assay the PDGF-BB in saliva samples.Entities:
Keywords: Aptamer; Biosensor; Personal glucose meters; Platelet-derived growth factor B
Mesh：
Substances：
Year: 2013 PMID： 24434497 DOI： 10.1016/j.bios.2013.12.041
Source DB: PubMed Journal: Biosens Bioelectron ISSN： 0956-5663 Impact factor: 10.618