Label-free detection of C-reactive protein using a carbon nanofiber based biosensor.
Label-free detection of C-reactive protein using a carbon nanofiber based biosensor.
复制标题
DOI:
10.1016/j.bios.2014.03.027
复制
发表时间:
2014-09-15
影响因子:
12.6
通讯作者:
Koehne, Jessica E.
中科院分区:
文献类型:
--
作者:
Gupta, Rakesh K.;Periyakaruppan, Adaikkappan;Meyyappan, M.;Koehne, Jessica E.
关键词:
We report the sensitive detection of C-reactive protein (CRP), a biomarker for cardiac disease, using a carbon nanofiber based biosensor platform. Vertically aligned carbon nanofibers were grown using plasma enhanced chemical vapor deposition to fabricate nanoelectrode arrays in a 3 X 3 configuration. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) were used for the CRP detection. The CV responses show a 25 % reduction in redox current upon the immobilization of anti-CRP on the electrode where as a 30% increase in charge transfer resistance is seen from EIS. Further reduction in redox current and increase in charge transfer resistance result from binding of CRP on anti-CRP immobilized surface, proportional to the concentration of the CRP target. The detection limit of the sensor is found to be ~90 pM or ~11 ng/ml, which is in the clinically relevant range. Control tests using non-specific myoglobin antigen confirmed the specificity of the present approach.
登录
查看更多内容
影响因子:
10.2
作者:
McBride JD;Cooper MA
通讯作者:
Cooper MA
影响因子:
2.8
作者:
Arumugam, Prabhu U.;Yu, Edmond;Meyyappan, M.
通讯作者:
Meyyappan, M.
影响因子:
12.6
作者:
Periyakaruppan, Adaikkappan;Arumugam, Prabhu U.;Koehne, Jessica E.
通讯作者:
Koehne, Jessica E.
影响因子:
6.1
作者:
Luchansky MS;Washburn AL;McClellan MS;Bailey RC
通讯作者:
Bailey RC
影响因子:
12.6
作者:
Hu, WP;Hsu, HY;Chen, SJ
通讯作者:
Chen, SJ