Full length Histone H3 conjugated electrochemical biosensor for extracellular proteolytic Cathepsin L activity detection

Title
Full length Histone H3 conjugated electrochemical biosensor for extracellular proteolytic Cathepsin L activity detection
Authors
이관희서정목성태화
Issue Date
2018-08
Publisher
Sensors and actuators. B, Chemical
Citation
VOL 267-244
Abstract
Timely and accurate detection of proteolytic extracellular Cathepsin L (CTSL) activity is vital for assessing the metastatic potential of cancer. In this article, extracellular CTSL activity was detected using biotinylated full length histone H3 (BFLH3) treated extended gate (EG) field effect transistors (FETs) with 104 times the sensitivity of fluorometric CTSL activity assays. Upon active reaction by CTSL, the treated BFLH3 is cleaved after amino acid 21, inducing a significant charge change on the EG surface due to the large size and charge of the cleaved BFLH3. This change in EG surface charge can be detected by FET, enabling the quantification of proteolytic extracellular CTSL activity. Moreover, self-normalized quantification of CTSL activity was achieved in heterogeneous LNCaP and PANC-1 cultured cell media, which accurately represented higher CTSL levels in LNCaP derived from metastatic lesion of human prostatic adenocarcinoma. CTSL activity detection with EG FET allows multiple measurements of CTSL activity with one FET and opens up the possibility of detecting other proteolytic enzymes for cancer diagnosis and prognosis.
URI
http://pubs.kist.re.kr/handle/201004/68167
ISSN
0925-4005
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE