Peptide hormone sensors using human hormone receptor-carrying nanovesicles and graphene FETs

Title
Peptide hormone sensors using human hormone receptor-carrying nanovesicles and graphene FETs
Authors
송현석안세련안지현이승환장정식박태현
Issue Date
2020-01
Publisher
Scientific Reports
Citation
VOL 10, 388
Abstract
Hormones within very low levels regulate and control the activity of specifc cells and organs of the human body. Hormone imbalance can cause many diseases. Therefore, hormone detection tools have been developed, particularly over the last decade. Peptide hormones have a short half-life, so it is important to detect them within a short time. In this study, we report two types of peptide hormone sensors using human hormone receptor-carrying nanovesicles and graphene feld-efect transistors (FETs). Parathyroid hormone (PTH) and glucagon (GCG) are peptide hormones present in human blood that act as ligands to G protein-coupled receptors (GPCRs). In this paper, the parathyroid hormone receptor (PTHR) and the glucagon receptor (GCGR) were expressed in human embryonic kidney-293 (HEK-293) cells, and were constructed as nanovesicles carrying the respective receptors. They were then immobilized onto graphene-based FETs. The two hormone sensors developed were able to detect each target hormone with high sensitivity (ca. 100 fM of PTH and 1 pM of GCG). Also, the sensors accurately recognized target hormones among diferent types of peptide hormones. In the development of hormone detection tools, this approach, using human hormone receptor-carrying nanovesicles and graphene FETs, ofers the possibility of detecting very low concentrations of hormones in real-time.
URI
http://pubs.kist.re.kr/handle/201004/72075
ISSN
2045-2322
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KIST Publication > Article
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