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Serotype-specific identification of Dengue virus by silicon nanowire array biosensor
Min Joon Huang1, Hui Xie, Qiangqiang Wan
1Institute of Microelectronics, A* STAR (Agency for Science, Technology and Research), 11 Science Park Road, Singapore 117685, China.
Journal of Nanoscience and Nanotechnology
|July 19, 2013
Summary
This study presents a silicon nanowire biosensor for rapid, simultaneous detection of Dengue virus serotypes (DENV-1 to DENV-4). The multiplex biosensor demonstrates high specificity in identifying multiple Dengue infections on a single chip.
Area of Science:
- Nanotechnology
- Biotechnology
- Infectious Disease Diagnostics
Background:
- Dengue virus poses a significant global health threat, necessitating rapid and accurate diagnostic tools.
- Current diagnostic methods can be time-consuming and may not effectively distinguish between all four Dengue serotypes simultaneously.
- There is a need for advanced biosensing platforms capable of multiplexed detection of Dengue virus.
Purpose of the Study:
- To develop and validate a silicon nanowire (SiNW) biosensing platform for the simultaneous identification of Dengue virus serotypes (DENV-1 to DENV-4).
- To establish the specificity and capability of the SiNW biosensor for detecting multiple Dengue serotypes in a single assay.
Main Methods:
- Immobilization of four distinct peptide nucleic acid (PNA) probes, specific to each Dengue serotype, onto a SiNW array.
- Detection of Dengue virus serotypes based on changes in electrical resistance upon hybridization of target DNA with PNA probes.
- Validation using a mixture of two Dengue serotypes obtained from RT-PCR to assess multiplex detection capability.
Main Results:
- The SiNW biosensor demonstrated specific detection, with resistance changes occurring only in regions where Dengue targets hybridized with complementary PNA probes.
- The platform successfully identified multiple Dengue serotypes simultaneously when a mixture was applied to the multiplex SiNW surface.
- High specificity was achieved in distinguishing between different Dengue serotypes on a single sensing chip.
Conclusions:
- The developed multiplex SiNW biosensor is a promising technology for the rapid and specific detection of multiple Dengue virus infections.
- This platform offers a potential advancement in Dengue diagnostics, enabling simultaneous identification of different serotypes.
- The SiNW biosensing platform shows significant potential for clinical applications in infectious disease diagnostics.
