alexa Acute on-chip HIV detection through label-free electrical sensing of viral nano-lysate.
Engineering

Engineering

Journal of Biosensors & Bioelectronics

Author(s): Shafiee H, Jahangir M, Inci F, Wang S, Willenbrecht RB,

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Abstract Development of portable biosensors has broad applications in environmental monitoring, clinical diagnosis, public health, and homeland security. There is an unmet need for pathogen detection at the point-of-care (POC) using a fast, sensitive, inexpensive, and easy-to-use method that does not require complex infrastructure and well-trained technicians. For instance, detection of Human Immunodeficiency Virus (HIV-1) at acute infection stage has been challenging, since current antibody-based POC technologies are not effective due to low concentration of antibodies. In this study, we demonstrated for the first time a label-free electrical sensing method that can detect lysed viruses, i.e. viral nano-lysate, through impedance analysis, offering an alternative technology to the antibody-based methods such as dipsticks and Enzyme-linked Immunosorbent Assay (ELISA). The presented method is a broadly applicable platform technology that can potentially be adapted to detect multiple pathogens utilizing impedance spectroscopy for other infectious diseases including herpes, influenza, hepatitis, pox, malaria, and tuberculosis. The presented method offers a rapid and portable tool that can be used as a detection technology at the POC in resource-constrained settings, as well as hospital and primary care settings. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
This article was published in Small and referenced in Journal of Biosensors & Bioelectronics

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