A new sight for detecting the ADRB1 gene mutation to guide a therapeutic regimen for hypertension based on a CeO2-doped nanoprobe.
The β1-adrenergic receptor gene (Entrez Gene:ADRB1), as the target of beta-blockers for hypertension, can directly influence the antihypertensive effect of metoprolol in the Chinese population. This therapeutic effect is often hindered by a lack of evidence-based medical information. To address this challenge, we report a novel assay based on graphene oxide and a CeO2nanocomposite functionalized by 3-aminopropyltriethoxysilane supported Pt nanoparticles (GO/CeO2/PtNPs) as a signal probe. Due to the large specific surface area and good adsorption properties of the GO/CeO2nanocomposite, large amounts of PtNPs were immobilized, which amplified the electrochemical signal and improved the sensitivity of the biosensor. To further improvement the sensitivity of the biosensor, Streptavidin (SA) was introduced because it can provide more active sites for the immobilization of the biotinylated capture probe (bio-CP). The electrochemical signal was primarily derived from the catalysis of H2O2by GO/CeO2/PtNPs. Chronoamperometry was applied to record electrochemical signals, which linearly increased with target DNA. Under optimal conditions, the prepared biosensor had a wide linear range from 1fM to 10nM and a low detection limit of 0.33fM in the detecting of ADRB1 gene. Moreover, the proposed method had good stability and recovery, suggesting its potential for use in clinical research.
Institute of Life Science, College of Pharmacy and School of Public Health, Chongqing Medical University, Chongqing 400016, PR China.
Yilin
Y
Zhao
Institute of Life Science, College of Pharmacy and School of Public Health, Chongqing Medical University, Chongqing 400016, PR China.
Junlin
J
He
Institute of Life Science, College of Pharmacy and School of Public Health, Chongqing Medical University, Chongqing 400016, PR China.
Yazhen
Y
Niu
Institute of Life Science, College of Pharmacy and School of Public Health, Chongqing Medical University, Chongqing 400016, PR China.
Jun
J
Chen
Institute of Life Science, College of Pharmacy and School of Public Health, Chongqing Medical University, Chongqing 400016, PR China.
Jing
J
Wu
Institute of Life Science, College of Pharmacy and School of Public Health, Chongqing Medical University, Chongqing 400016, PR China. Electronic address: yuchaom@163.com.
Chao
C
Yu
D015374:Biosensing Techniques / Q000379:methods*; D001710:Biotin / Q000737:chemistry; D002563:Cerium / Q000737:chemistry*; D004247:DNA / Q000097:blood / Q000235:genetics*; D004252:DNA Mutational Analysis / Q000379:methods; D055664:Electrochemical Techniques / Q000379:methods; D006108:Graphite / Q000737:chemistry*; D006801:Humans; D053768:Metal Nanoparticles / Q000737:chemistry / Q000648:ultrastructure; D008958:Models, Molecular; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D010087:Oxides / Q000737:chemistry; D010984:Platinum / Q000737:chemistry*; D018342:Receptors, Adrenergic, beta-1 / Q000235:genetics*; D019809:Streptavidin / Q000737:chemistry
C547787:ADRB1 protein, human; D010087:Oxides; D018342:Receptors, Adrenergic, beta-1; D002563:Cerium; D010984:Platinum; C030583:ceric oxide; D001710:Biotin; D006108:Graphite; D004247:DNA; D019809:Streptavidin
Biotin-avidin system; CeO(2); Target therapy; The β1-adrenergic receptor gene