Microfluidic System for Detection of Viral RNA in Blood Using a Barcode Fluorescence Reporter and a Photocleavable Capture Probe.
Microfluidic System for Detection of Viral RNA in Blood Using a Barcode Fluorescence Reporter and a Photocleavable Capture Probe.
复制标题
DOI:
10.1021/acs.analchem.7b03527
复制
发表时间:
2017-11-21
影响因子:
7.4
通讯作者:
Mathies R
中科院分区:
文献类型:
--
作者:
Du K;Park M;Griffiths A;Carrion R;Patterson J;Schmidt H;Mathies R
A microfluidic sample preparation multiplexer (SPM) and assay procedure is developed to improve amplification-free detection of Ebola virus RNA from blood. While a previous prototype successfully detected viral RNA following off-chip RNA extraction from infected cells, the new device and protocol can detect Ebola virus in raw blood with clinically relevant sensitivity. The Ebola RNA is hybridized with sequence specific capture and labeling DNA probes in solution and then the complex is pulled down onto capture beads for purification and concentration. After washing, the captured RNA target is released by irradiating the photocleavable DNA capture probe with ultraviolet (UV) light. The released, labeled, and purified RNA is detected by a sensitive and compact fluorometer. Exploiting these capabilities, a detection limit of 800 attomolar (aM) is achieved without target amplification. The new SPM can run up to 80 assays in parallel using a pneumatic multiplexing architecture. Importantly, our new protocol does not require time-consuming and problematic off-chip probe conjugation and washing. This improved SPM and labeling protocol is an important step toward a useful POC device and assay.
登录
查看更多内容
影响因子:
6.5
作者:
Coarsey CT;Esiobu N;Narayanan R;Pavlovic M;Shafiee H;Asghar W
通讯作者:
Asghar W
影响因子:
5
作者:
Ahangar, Laleh Enayati;Mehrgardi, Masoud A.
通讯作者:
Mehrgardi, Masoud A.
影响因子:
12.6
作者:
Ji, Xiaofan;Xiao, Chenyu;Fu, Junxue
通讯作者:
Fu, Junxue
影响因子:
9.4
作者:
Drosten, C;Göttig, S;Günther, S
通讯作者:
Günther, S
DOI:
10.3390/v8070201
发表时间:
2016-07-21
期刊:
Viruses
影响因子:
--
作者:
Culley S;Towers GJ;Selwood DL;Henriques R;Grove J
通讯作者:
Grove J