This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. Primary support for the subproject and the subproject's principal investigator may have been provided by other sources, including other NIH sources. The Total Cost listed for the subproject likely represents the estimated amount of Center infrastructure utilized by the subproject, not direct funding provided by the NCRR grant to the subproject or subproject staff. The goal of this project is to develop low cost portable flow cytometers for use in biomedical applications. Such instruments would have a large impact in many areas including medicine (HIV and cancer diagnosis), homeland defense (biological point detection, bio-surveillance, and forensic analysis) and general biomedical research (ligand-receptor studies, molecular assembly analysis, high throughput screening and genotyping). The many powerful applications have made flow cytometers a fixture in nearly every university, medical school, pharmaceutical company, and diagnostic lab. However, the size, expense and requirement for large amounts of consumables have limited their use to formal laboratory settings. A low cost portable flow cytometer would make these applications available to all clinicians and researchers, which would have a great impact on world health and research. To develop such an instrument we will develop (in the R21 phase) technologies that allow particle focusing without the use of sheath fluid. The elimination of sheath fluid will result in increased portability of the instrument and also reduce consumable requirements. Our novel technology will allow a sheathless portable flow cytometer to achieve conventional particle analysis rates, while using a fraction of the power and consumables of a conventional flow cytometer. We will also develop low power excitation/detection systems (R21 phase) that will not require extensive thermoregulation to achieve optical measurement stability. Such systems, will significantly reduce the size, cost and power requirements of a flow cytometer. Finally, we will integrate the above technologies into a miniature affordable flow cytometer, with advanced sample handling capabilities that has significantly reduced consumable and power requirements (R33 phase). To do this we will combine the above technologies into a microfabricated flow cytometer core that can easily be interfaced with sample handling and optical modules. We will also develop a miniature low power data acquisition system to enable assembly of a complete miniature low power flow cytometer. We will validate instrument performance using quantitative flow cytometry techniques.
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| Micheva-Viteva, Sofiya N; Shou, Yulin; Nowak-Lovato, Kristy L et al. (2013) c-KIT signaling is targeted by pathogenic Yersinia to suppress the host immune response. BMC Microbiol 13:249 |
| Ai, Ye; Sanders, Claire K; Marrone, Babetta L (2013) Separation of Escherichia coli bacteria from peripheral blood mononuclear cells using standing surface acoustic waves. Anal Chem 85:9126-34 |
| Sanders, Claire K; Mourant, Judith R (2013) Advantages of full spectrum flow cytometry. J Biomed Opt 18:037004 |
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| Piyasena, Menake E; Austin Suthanthiraraj, Pearlson P; Applegate Jr, Robert W et al. (2012) Multinode acoustic focusing for parallel flow cytometry. Anal Chem 84:1831-9 |
| Austin Suthanthiraraj, Pearlson P; Piyasena, Menake E; Woods, Travis A et al. (2012) One-dimensional acoustic standing waves in rectangular channels for flow cytometry. Methods 57:259-71 |
| Vuyisich, Momchilo; Sanders, Claire K; Graves, Steven W (2012) Binding and cell intoxication studies of anthrax lethal toxin. Mol Biol Rep 39:5897-903 |
| Chaudhary, Anu; Ganguly, Kumkum; Cabantous, Stephanie et al. (2012) The Brucella TIR-like protein TcpB interacts with the death domain of MyD88. Biochem Biophys Res Commun 417:299-304 |
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