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Juusti V, Kulpakko J, Cudjoe E, Pimenoff VN, Hänninen P. Biophysical Properties of Bifunctional Phage-Biosensor. Viruses 2023; 15:v15020299. [PMID: 36851513 PMCID: PMC9968116 DOI: 10.3390/v15020299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/18/2023] [Accepted: 01/18/2023] [Indexed: 01/26/2023] Open
Abstract
Biosensor research is a swiftly growing field for developing rapid and precise analytical devices for biomedical, pharmaceutical, and industrial use and beyond. Herein, we propose a phage-based biosensor method to develop a sensitive and specific system for biomedical detection. Our method is based on in vitro selected phages and their interaction with the targeted analytes as well as on optical properties that change according to the concentration of the model analyte. The green fluorescent protein (GFP) was chosen as our model analyte as it has its own well-known optical properties. Brilliant green was used as a reporter component for the sensor. Its presence enables a color intensity (absorbance) change when the analyte is present in the solution. Furthermore, the reporter dye functioned as a quencher for an additional lanthanide label in our assay. It mediated the specific phage-derived interference in the signal measured with the time-resolved luminescence. Most importantly, our results confirmed that the presented bifunctional phage with its liquid crystal properties enabled the measurement of GFP in a concentration-dependent, quantitative manner with a limit of detection of 0.24 µg/mL. In the future, our novel method to develop phage-based biosensors may provide highly sensitive and specific biosensors for biomedical or otherwise-relevant targets.
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Affiliation(s)
- Vilhelmiina Juusti
- Laboratory of Biophysics and Medicity Research Laboratories, Institute of Biomedicine, Faculty of Medicine, University of Turku, Tykistökatu 6A, 20520 Turku, Finland
- Aqsens Health Ltd., Itäinen Pitkäkatu 4B, 20520 Turku, Finland
- Correspondence:
| | - Janne Kulpakko
- Aqsens Health Ltd., Itäinen Pitkäkatu 4B, 20520 Turku, Finland
| | - Elizabeth Cudjoe
- Immunology Department, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Legon P.O. Box LG581, Ghana
| | - Ville N. Pimenoff
- Aqsens Health Ltd., Itäinen Pitkäkatu 4B, 20520 Turku, Finland
- Biobank Borealis of Northern Finland, Faculty of Medicine, University of Oulu, Aapistie 5B, 90220 Oulu, Finland
- Department of Clinical Science, Intervention and Technology, Karolinska Institutet, 14186 Stockholm, Sweden
| | - Pekka Hänninen
- Laboratory of Biophysics and Medicity Research Laboratories, Institute of Biomedicine, Faculty of Medicine, University of Turku, Tykistökatu 6A, 20520 Turku, Finland
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An P, Kim JH, Shin M, Kim S, Cho S, Park C, Kim G, Lee HW, Choi JW, Ahn C, Song M. Efficient and Stable Fiber Dye-Sensitized Solar Cells Based on Solid-State Li-TFSI Electrolytes with 4-Oxo-TEMPO Derivatives. NANOMATERIALS 2022; 12:nano12132309. [PMID: 35808145 PMCID: PMC9267960 DOI: 10.3390/nano12132309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 06/28/2022] [Accepted: 07/01/2022] [Indexed: 02/01/2023]
Abstract
Fiber-shaped dye-sensitized solar cells (FDSSCs) with flexibility, weavablity, and wearability have attracted intense scientific interest and development in recent years due to their low cost, simple fabrication, and environmentally friendly operation. Since the Grätzel group used the organic radical 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO) as the redox system in dye-sensitized solar cells (DSSCs) in 2008, TEMPO has been utilized as an electrolyte to further improve power conversion efficiency (PCE) of solar cells. Hence, the TEMPO with high catalyst oxidant characteristics was developed as a hybrid solid-state electrolyte having high conductivity and stability structure by being integrated with a lithium bis(trifluoromethanesulfonyl)imide (Li-TFSI) film for FDSSCs. The optimized 4-Oxo TEMPO (OX) based solid-state FDSSC (SS-FDSSC) showed the PCE of up to 6%, which was improved by 34.2% compared to that of the reference device with 4.47%. The OX-enhanced SS-FDSSCs reduced a series resistance (Rs) resulting in effective electron extraction with improved short-circuit current density (JSC), while increasing a shunt resistance (Rsh) to prevent the recombination of photo-excited electrons. The result is an improvement in a fill factor (FF) and consequently a higher value for the PCE.
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Affiliation(s)
- Pyeongje An
- Department of Energy & Electronic Materials, Korea Institute of Materials Science (KIMS), Changwon 51508, Korea; (P.A.); (J.H.K.); (S.K.); (S.C.); (C.P.); (G.K.)
- Department of Nano Fusion Technology, Pusan National University, Busan 46241, Korea
| | - Jae Ho Kim
- Department of Energy & Electronic Materials, Korea Institute of Materials Science (KIMS), Changwon 51508, Korea; (P.A.); (J.H.K.); (S.K.); (S.C.); (C.P.); (G.K.)
| | - Myeonghwan Shin
- Department of Biology and Chemistry, Changwon National University, Changwon 51140, Korea;
| | - Sukyeong Kim
- Department of Energy & Electronic Materials, Korea Institute of Materials Science (KIMS), Changwon 51508, Korea; (P.A.); (J.H.K.); (S.K.); (S.C.); (C.P.); (G.K.)
| | - Sungok Cho
- Department of Energy & Electronic Materials, Korea Institute of Materials Science (KIMS), Changwon 51508, Korea; (P.A.); (J.H.K.); (S.K.); (S.C.); (C.P.); (G.K.)
| | - Chaehyun Park
- Department of Energy & Electronic Materials, Korea Institute of Materials Science (KIMS), Changwon 51508, Korea; (P.A.); (J.H.K.); (S.K.); (S.C.); (C.P.); (G.K.)
- Department of Nano Fusion Technology, Pusan National University, Busan 46241, Korea
| | - Geonguk Kim
- Department of Energy & Electronic Materials, Korea Institute of Materials Science (KIMS), Changwon 51508, Korea; (P.A.); (J.H.K.); (S.K.); (S.C.); (C.P.); (G.K.)
- Department of Nano Fusion Technology, Pusan National University, Busan 46241, Korea
| | - Hyung Woo Lee
- Department of Nano Fusion Technology, Pusan National University, Busan 46241, Korea
- Department of Nanoenergy Engineering and Research Center of Energy Convergence Technology, Pusan National University, Busan 46241, Korea
- Correspondence: (H.W.L.); (J.W.C.); (C.A.); (M.S.)
| | - Jin Woo Choi
- Department of Energy & Electronic Materials, Korea Institute of Materials Science (KIMS), Changwon 51508, Korea; (P.A.); (J.H.K.); (S.K.); (S.C.); (C.P.); (G.K.)
- Correspondence: (H.W.L.); (J.W.C.); (C.A.); (M.S.)
| | - Chuljin Ahn
- Department of Biology and Chemistry, Changwon National University, Changwon 51140, Korea;
- Correspondence: (H.W.L.); (J.W.C.); (C.A.); (M.S.)
| | - Myungkwan Song
- Department of Energy & Electronic Materials, Korea Institute of Materials Science (KIMS), Changwon 51508, Korea; (P.A.); (J.H.K.); (S.K.); (S.C.); (C.P.); (G.K.)
- Correspondence: (H.W.L.); (J.W.C.); (C.A.); (M.S.)
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