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Villa N, Tartari E, Glicenstein S, de Villiers de la Noue H, Picard E, Marcoux PR, Zelsmann M, Resch G, Hadji E, Houdré R. Optical Trapping and Fast Discrimination of Label-Free Bacteriophages at the Single Virion Level. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2308814. [PMID: 38282203 DOI: 10.1002/smll.202308814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 12/13/2023] [Indexed: 01/30/2024]
Abstract
There is a recent resurgence of interest in phage therapy (the therapeutic use of bacterial viruses) as an approach to eliminating difficult-to-treat infections. However, existing approaches for therapeutic phage selection and virulence testing are time-consuming, host-dependent, and facing reproducibility issues. Here, this study presents an innovative approach wherein integrated resonant photonic crystal (PhC) cavities in silicon are used as optical nanotweezers for probing and manipulating single bacteria and single virions with low optical power. This study demonstrates that these nanocavities differentiate between a bacterium and a phage without labeling or specific surface bioreceptors. Furthermore, by tailoring the spatial extent of the resonant optical mode in the low-index medium, phage distinction across phenotypically distinct phage families is demonstrated. The work paves the road to the implementation of optical nanotweezers in phage therapy protocols.
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Affiliation(s)
- Nicolas Villa
- Institut de Physique, École Polytechnique Fédérale de Lausanne, Lausanne, CH-1015, Switzerland
| | - Enrico Tartari
- Institut de Physique, École Polytechnique Fédérale de Lausanne, Lausanne, CH-1015, Switzerland
| | - Simon Glicenstein
- Univ. Grenoble Alpes, CEA, Grenoble INP, IRIG, PHELIQS, Grenoble, 38000, France
| | - Hugues de Villiers de la Noue
- Laboratory of Bacteriophages and Phage Therapy, Center for Research and Innovation in Clinical Pharmaceutical Sciences (CRISP), Lausanne University Hospital (CHUV), Lausanne, 1011, Switzerland
| | - Emmanuel Picard
- Univ. Grenoble Alpes, CEA, Grenoble INP, IRIG, PHELIQS, Grenoble, 38000, France
| | - Pierre R Marcoux
- Univ. Grenoble Alpes, CEA, LETI, DTIS, L4IV, Grenoble, 38000, France
| | - Marc Zelsmann
- Université Grenoble Alpes, CNRS, CEA/LETI Minatec, LTM, Grenoble, 38000, France
| | - Grégory Resch
- Laboratory of Bacteriophages and Phage Therapy, Center for Research and Innovation in Clinical Pharmaceutical Sciences (CRISP), Lausanne University Hospital (CHUV), Lausanne, 1011, Switzerland
| | - Emmanuel Hadji
- Univ. Grenoble Alpes, CEA, Grenoble INP, IRIG, PHELIQS, Grenoble, 38000, France
| | - Romuald Houdré
- Institut de Physique, École Polytechnique Fédérale de Lausanne, Lausanne, CH-1015, Switzerland
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