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Microneedle patch-based enzyme-linked immunosorbent assay to quantify protein biomarkers of tuberculosis

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Abstract

There is a clinical need for differential diagnosis of the latent versus active stages of tuberculosis (TB) disease by a simple-to-administer test. Alpha-crystallin (Acr) and early secretory antigenic target-6 (ESAT-6) are protein biomarkers associated with the latent and active stages of TB, respectively, and could be used for differential diagnosis. We therefore developed a microneedle patch (MNP) designed for application to the skin to quantify Acr and ESAT-6 in dermal interstitial fluid by enzyme-linked immunosorbent assay (ELISA). We fabricated mechanically strong microneedles made of polystyrene and coated them with capture antibodies against Acr and ESAT-6. We then optimized assay sensitivity to achieve a limit of detection of 750 pg/ml and 3,020 pg/ml for Acr and ESAT-6, respectively. This study demonstrates the feasibility of an MNP-based ELISA for differential diagnosis of latent TB disease.

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Acknowledgements

We thank Donna Bondy for administrative support. The graphical abstract and Figure 3 were created with Biorender.com.

Funding

This work was supported by the National Institutes of Health (EB025499) and National Science Foundation (CBET-2224610).

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Authors and Affiliations

Authors

Contributions

Y.K.: Methodology; investigation; data curation; formal analysis; writing – original draft. M.L.: Methodology; investigation. J.H.: Investigation; data curation. Z.W.: Investigation. R.G.: Investigation. Y.L.: Investigation. T.G.: Methodology; investigation; writing – review and editing, J.P.B.: Methodology. S.S.: Funding acquisition; supervision; writing – review and editing. F.Q.: Conceptualization; methodology; funding acquisition; supervision; writing – review and editing. M.R.P.: Conceptualization; methodology; funding acquisition; supervision; writing – review and editing.

Corresponding author

Correspondence to Mark R. Prausnitz.

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Competing interests

Mark R. Prausnitz is an inventor of patents, a paid advisor, and a founder/shareholder of companies developing microneedle-based products. The associated conflict of interest has been disclosed and is managed by Georgia Institute of Technology. Srikanth Singamaneni is one of the inventors on a pending patent related to plasmonic fluor technology, and the technology has been licensed by the Office of Technology Management at Washington University in St Louis to Auragent Bioscience LLC, which is developing plasmonic fluor products. S.S. is one of the co-founders and shareholders of Auragent Bioscience LLC. These potential conflicts of interest have been disclosed and are being managed by Washington University in St Louis.The other authors do not declare any conflicts of interest.

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Kim, Y., Lewis, M.B., Hwang, J. et al. Microneedle patch-based enzyme-linked immunosorbent assay to quantify protein biomarkers of tuberculosis. Biomed Microdevices 26, 15 (2024). https://doi.org/10.1007/s10544-024-00694-2

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  • DOI: https://doi.org/10.1007/s10544-024-00694-2

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