Ultrahigh sensitivity assays for human cardiac troponin I using TiO2 nanotube arrays
Rapid, highly sensitive troponin assays for the analysis of serum at the point-of-care are particularly desirable for the effective treatment of myocardial infarction (MYI). TiO(2) nanotube arrays constitute a low cost, high surface area, semiconducting architecture with great promise for biosensing...
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| Veröffentlicht in: | Lab on a chip 2012-02, Vol.12 (4), p.821-828 |
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| container_title | Lab on a chip |
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| creator | Kar, Piyush Pandey, Archana Greer, John J Shankar, Karthik |
| description | Rapid, highly sensitive troponin assays for the analysis of serum at the point-of-care are particularly desirable for the effective treatment of myocardial infarction (MYI). TiO(2) nanotube arrays constitute a low cost, high surface area, semiconducting architecture with great promise for biosensing applications due to their compatibility with multiple detection techniques. Using TiO(2) nanotube arrays functionalized with highly robust and ordered carboxyalkylphosphonic acid self-assembled monolayers, we have developed a simple and highly sensitive fluorescence immunoassay which can detect concentrations of human cardiac troponin I as low as 0.1 pg ml(-1) without the use of enzymatic amplification. Varying the morphological parameters of the nanotube arrays allows tuning the detection range over 6 orders of magnitude of the troponin concentration from 0.1 pg ml(-1)-100 ng ml(-1). |
| doi_str_mv | 10.1039/c2lc20892j |
| format | Article |
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| fulltext | fulltext |
| identifier | EISSN: 1473-0189 |
| ispartof | Lab on a chip, 2012-02, Vol.12 (4), p.821-828 |
| issn | 1473-0189 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_917854453 |
| source | MEDLINE; Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection |
| subjects | Fluoroimmunoassay - instrumentation Fluoroimmunoassay - methods Humans Microfluidic Analytical Techniques - instrumentation Microfluidic Analytical Techniques - methods Myocardial Infarction - blood Nanotubes - chemistry Sensitivity and Specificity Titanium - chemistry Troponin I - blood |
| title | Ultrahigh sensitivity assays for human cardiac troponin I using TiO2 nanotube arrays |
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