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Obořilová R, Kučerová E, Botka T, Vaisocherová-Lísalová H, Skládal P, Farka Z. Piezoelectric biosensor with dissipation monitoring enables the analysis of bacterial lytic agent activity. Sci Rep 2025; 15:3419. [PMID: 39870739 PMCID: PMC11772602 DOI: 10.1038/s41598-024-85064-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2024] [Accepted: 12/30/2024] [Indexed: 01/29/2025] Open
Abstract
Antibiotic-resistant strains of Staphylococcus aureus pose a significant threat in healthcare, demanding urgent therapeutic solutions. Combining bacteriophages with conventional antibiotics, an innovative approach termed phage-antibiotic synergy, presents a promising treatment avenue. However, to enable new treatment strategies, there is a pressing need for methods to assess their efficacy reliably and rapidly. Here, we introduce a novel approach for real-time monitoring of pathogen lysis dynamics employing the piezoelectric quartz crystal microbalance (QCM) with dissipation (QCM-D) technique. The sensor, a QCM chip modified with the bacterium S. aureus RN4220 ΔtarM, was utilized to monitor the activity of the enzyme lysostaphin and the phage P68 as model lytic agents. Unlike conventional QCM solely measuring resonance frequency changes, our study demonstrates that dissipation monitoring enables differentiation of bacterial growth and lysis caused by cell-attached lytic agents. Compared to reference turbidimetry measurements, our results reveal distinct alterations in the growth curve of the bacteria adhered to the sensor, characterized by a delayed lag phase. Furthermore, the dissipation signal analysis facilitated the precise real-time monitoring of phage-mediated lysis. Finally, the QCM-D biosensor was employed to evaluate the synergistic effect of subinhibitory concentrations of the antibiotic amoxicillin with the bacteriophage P68, enabling monitoring of the lysis of P68-resistant wild-type strain S. aureus RN4220. Our findings suggest that this synergy also impedes the formation of bacterial aggregates, the precursors of biofilm formation. Overall, this method brings new insights into phage-antibiotic synergy, underpinning it as a promising strategy against antibiotic-resistant bacterial strains with broad implications for treatment and prevention.
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Affiliation(s)
- Radka Obořilová
- Department of Biochemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic.
- Central European Institute of Technology, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic.
| | - Eliška Kučerová
- Department of Experimental Biology, Section of Genetics and Molecular Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Tibor Botka
- Department of Experimental Biology, Section of Genetics and Molecular Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Hana Vaisocherová-Lísalová
- FZU - Institute of Physics of the Czech Academy of Sciences, Na Slovance 1999/2, 182 00, Prague, Czech Republic
| | - Petr Skládal
- Department of Biochemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Zdeněk Farka
- Department of Biochemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic.
- Central European Institute of Technology, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic.
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Lim CC, Woo PCY, Lim TS. Development of a Phage Display Panning Strategy Utilizing Crude Antigens: Isolation of MERS-CoV Nucleoprotein human antibodies. Sci Rep 2019; 9:6088. [PMID: 30988390 PMCID: PMC6465254 DOI: 10.1038/s41598-019-42628-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 04/04/2019] [Indexed: 12/20/2022] Open
Abstract
Antibody phage display has been pivotal in the quest to generate human monoclonal antibodies for biomedical and research applications. Target antigen preparation is a main bottleneck associated with the panning process. This includes production complexity, downstream purification, quality and yield. In many instances, purified antigens are preferred for panning but this may not be possible for certain difficult target antigens. Here, we describe an improved procedure of affinity selection against crude or non-purified antigen by saturation of non-binders with blocking agents to promote positive binder enrichment termed as Yin-Yang panning. A naïve human scFv library with kappa light chain repertoire with a library size of 109 was developed. The improved Yin-Yang biopanning process was able to enrich monoclonal antibodies specific to the MERS-CoV nucleoprotein. Three unique monoclonal antibodies were isolated in the process. The Yin-Yang biopanning method highlights the possibility of utilizing crude antigens for the isolation of monoclonal antibodies by phage display.
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Affiliation(s)
- Chia Chiu Lim
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, 11800, Penang, Malaysia
| | - Patrick C Y Woo
- Department of Microbiology, The University of Hong Kong, Hong Kong SAR, People's Republic of China
| | - Theam Soon Lim
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, 11800, Penang, Malaysia.
- Analytical Biochemistry Research Centre, Universiti Sains Malaysia, 11800, Penang, Malaysia.
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Szot-Karpińska K, Golec P, Leśniewski A, Pałys B, Marken F, Niedziółka-Jönsson J, Węgrzyn G, Łoś M. Modified Filamentous Bacteriophage as a Scaffold for Carbon Nanofiber. Bioconjug Chem 2016; 27:2900-2910. [DOI: 10.1021/acs.bioconjchem.6b00555] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Katarzyna Szot-Karpińska
- Institute
of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warszawa, Poland
- Department
of Molecular Biology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland
| | - Piotr Golec
- Laboratory
of Molecular Biology (affiliated with the University of Gdansk), Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Wita Stwosza
59, 80-308 Gdansk, Poland
| | - Adam Leśniewski
- Institute
of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warszawa, Poland
| | - Barbara Pałys
- Department
of Chemistry, University of Warsaw, Pastuera 1 02-093 Warsaw, Poland
| | - Frank Marken
- Department
of Chemistry, University of Bath, Bath BA2 7AY, United Kingdom
| | - Joanna Niedziółka-Jönsson
- Institute
of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warszawa, Poland
| | - Grzegorz Węgrzyn
- Department
of Molecular Biology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland
| | - Marcin Łoś
- Institute
of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warszawa, Poland
- Department
of Molecular Biology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland
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