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Campbell Z, Ghareeb CR, Baro S, Mauthe J, McColgan G, Amassian A, Scholle F, Ghiladi R, Abolhasani M, Dickey EC. Facile Synthesis of Cu-Doped TiO 2 Particles for Accelerated Visible Light-Driven Antiviral and Antibacterial Inactivation. ACS APPLIED ENGINEERING MATERIALS 2024; 2:1411-1423. [PMID: 38808269 PMCID: PMC11129180 DOI: 10.1021/acsaenm.4c00176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 04/17/2024] [Accepted: 04/19/2024] [Indexed: 05/30/2024]
Abstract
In this work, we present a facile and scalable hydrolysis-based route for the synthesis of copper-doped TiO2 particles for highly effective light-activated antiviral and antibacterial applications. The performance of the synthesized Cu-doped TiO2 particles is then evaluated using solution-phase antimicrobial photodynamic inactivation assays. We demonstrate that the Cu-doped TiO2 particles can successfully inactivate a wide range of pathogens with exposure to light for 90 min, including bacteria ranging from methicillin-resistant Staphylococcus aureus (99.9999%, ∼6 log units) to Klebsiella pneumoniae (99.93%, ∼3.3 log units), and viruses including feline calicivirus (99.94%, ∼3.4 log units) and HCoV-229E (99.996%, ∼4.6 log units), with the particles demonstrating excellent robustness toward photobleaching. Furthermore, a spray-coated polymer film, loaded with the synthesized Cu-doped TiO2 particles achieves inactivation of methicillin-resistant S. aureus up to 99.998% (∼4.8 log units). The presented results provide a clear advance forward in the use of metal-doped TiO2 for aPDI applications, including the scalable synthesis (kg/day) of well-characterized and robust particles, their facile incorporation into a nontoxic, photostable coating that may be easily and cheaply applied to a multitude of surfaces, and a broad efficacy against drug-resistant Gram-positive and Gram-negative bacteria, as well as against enveloped and nonenveloped viruses.
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Affiliation(s)
- Zachary
S. Campbell
- Department
of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way, Raleigh, North Carolina 27603, United States
| | - C. Roland Ghareeb
- Department
of Chemistry, North Carolina State University, 2620 Yarbrough Drive, Raleigh, North Carolina 27695-8204, United States
| | - Steven Baro
- Department
of Materials Science and Engineering, North
Carolina State University, 911 Partners Way, Raleigh, North Carolina 27603, United States
| | - Jacob Mauthe
- Department
of Materials Science and Engineering, North
Carolina State University, 911 Partners Way, Raleigh, North Carolina 27603, United States
| | - Gail McColgan
- Department
of Materials Science and Engineering, North
Carolina State University, 911 Partners Way, Raleigh, North Carolina 27603, United States
| | - Aram Amassian
- Department
of Materials Science and Engineering, North
Carolina State University, 911 Partners Way, Raleigh, North Carolina 27603, United States
| | - Frank Scholle
- Department
of Biological Sciences, North Carolina State
University, 3510 Thomas
Hall, Campus Box 7614, Raleigh, North Carolina 27695, United States
| | - Reza Ghiladi
- Department
of Chemistry, North Carolina State University, 2620 Yarbrough Drive, Raleigh, North Carolina 27695-8204, United States
| | - Milad Abolhasani
- Department
of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way, Raleigh, North Carolina 27603, United States
| | - Elizabeth C. Dickey
- Department
of Materials Science and Engineering, North
Carolina State University, 911 Partners Way, Raleigh, North Carolina 27603, United States
- Department
of Materials Science and Engineering, Carnegie
Mellon University, 5000 Forbes Ave, Pittsburgh, Pennsylvania 15213, United States
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2
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Petit R, Izambart J, Guillou M, da Silva Almeida JRG, de Oliveira Junior RG, Sol V, Ouk TS, Grougnet R, Quintans-Júnior LJ, Sitarek P, Thiéry V, Picot L. A Review of Phototoxic Plants, Their Phototoxic Metabolites, and Possible Developments as Photosensitizers. Chem Biodivers 2024; 21:e202300494. [PMID: 37983920 DOI: 10.1002/cbdv.202300494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 11/17/2023] [Accepted: 11/17/2023] [Indexed: 11/22/2023]
Abstract
This study provides a comprehensive overview of the current knowledge regarding phototoxic terrestrial plants and their phototoxic and photosensitizing metabolites. Within the 435,000 land plant species, only around 250 vascular plants have been documented as phototoxic or implicated in phototoxic occurrences in humans and animals. This work compiles a comprehensive catalog of these phototoxic plant species, organized alphabetically based on their taxonomic family. The dataset encompasses meticulous details including taxonomy, geographical distribution, vernacular names, and information on the nature and structure of their phototoxic and photosensitizing molecule(s). Subsequently, this study undertook an in-depth investigation into phototoxic molecules, resulting in the compilation of a comprehensive and up-to-date list of phytochemicals exhibiting phototoxic or photosensitizing activity synthesized by terrestrial plants. For each identified molecule, an extensive review was conducted, encompassing discussions on its phototoxic activity, chemical family, occurrence in plant families or species, distribution within different plant tissues and organs, as well as the biogeographical locations of the producer species worldwide. The analysis also includes a thorough discussion on the potential use of these molecules for the development of new photosensitizers that could be used in topical or injectable formulations for antimicrobial and anticancer phototherapy as well as manufacturing of photoactive devices.
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Affiliation(s)
- Raphaëlle Petit
- UMR CNRS 7266 LIENSs, La Rochelle Université, UMR CNRS 7266 LIENSs, Curie B10 Faculté des Sciences et Technologies, Avenue Michel Crépeau, 17042, La Rochelle, France
| | - Jonathan Izambart
- UMR CNRS 7266 LIENSs, La Rochelle Université, UMR CNRS 7266 LIENSs, Curie B10 Faculté des Sciences et Technologies, Avenue Michel Crépeau, 17042, La Rochelle, France
| | - Mathieu Guillou
- UMR CNRS 7266 LIENSs, La Rochelle Université, UMR CNRS 7266 LIENSs, Curie B10 Faculté des Sciences et Technologies, Avenue Michel Crépeau, 17042, La Rochelle, France
| | | | - Raimundo Gonçalves de Oliveira Junior
- UMR CNRS 7266 LIENSs, La Rochelle Université, UMR CNRS 7266 LIENSs, Curie B10 Faculté des Sciences et Technologies, Avenue Michel Crépeau, 17042, La Rochelle, France
- Franco-Brazilian Network on Natural Products, FB2NP
- UMR CNRS 8038 CiTCoM, Université Paris Cité, 75006, Paris, France
| | - Vincent Sol
- Franco-Brazilian Network on Natural Products, FB2NP
- LABCiS, UR 22722, Université de Limoges, 87000, Limoges, France
| | - Tan-Sothea Ouk
- Franco-Brazilian Network on Natural Products, FB2NP
- LABCiS, UR 22722, Université de Limoges, 87000, Limoges, France
| | - Raphaël Grougnet
- Franco-Brazilian Network on Natural Products, FB2NP
- UMR CNRS 8038 CiTCoM, Université Paris Cité, 75006, Paris, France
| | - Lucindo José Quintans-Júnior
- Franco-Brazilian Network on Natural Products, FB2NP
- LANEF, Universidade Federal de Sergipe, 49100-000, São Cristóvão, Sergipe, Brazil
| | | | - Valérie Thiéry
- UMR CNRS 7266 LIENSs, La Rochelle Université, UMR CNRS 7266 LIENSs, Curie B10 Faculté des Sciences et Technologies, Avenue Michel Crépeau, 17042, La Rochelle, France
- Franco-Brazilian Network on Natural Products, FB2NP
| | - Laurent Picot
- UMR CNRS 7266 LIENSs, La Rochelle Université, UMR CNRS 7266 LIENSs, Curie B10 Faculté des Sciences et Technologies, Avenue Michel Crépeau, 17042, La Rochelle, France
- Franco-Brazilian Network on Natural Products, FB2NP
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3
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Color-variable dual-dyed photodynamic antimicrobial polyethylene terephthalate (PET)/cotton blended fabrics. Photochem Photobiol Sci 2023:10.1007/s43630-023-00398-1. [PMID: 36894800 PMCID: PMC9998264 DOI: 10.1007/s43630-023-00398-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Accepted: 02/22/2023] [Indexed: 03/11/2023]
Abstract
The urgent demand for scalable, potent, color variable, and comfortable antimicrobial textiles as personal protection equipment (PPE) to help reduce infection transmission in hospitals and healthcare facilities has significantly increased since the start of the COVID-19 pandemic. Here, we explored photodynamic antimicrobial polyethylene terephthalate/cotton (TC) blended fabrics comprised of photosensitizer-conjugated cotton fibers and polyethylene terephthalate (PET) fibers dyed with disperse dyes. A small library of TC blended fabrics was constructed wherein the PET fibers were embedded with traditional disperse dyes dominating the fabric color, thereby enabling variable color expression, while the cotton fibers were covalently coupled with the photosensitizer thionine acetate as the microbicidal agent. Physical (SEM, CLSM, TGA, XPS and mechanical strength) and colorimetric (K/S and CIELab values) characterization methods were employed to investigate the resultant fabrics, and photooxidation studies with DPBF demonstrated the ability of these materials to generate reactive oxygen species (i.e., singlet oxygen) upon visible light illumination. The best results demonstrated a photodynamic inactivation of 99.985% (~ 3.82 log unit reduction, P = 0.0021) against Gram-positive S. aureus, and detection limit inactivation (99.99%, 4 log unit reduction, P ≤ 0.0001) against Gram-negative E. coli upon illumination with visible light (60 min; ~ 300 mW/cm2; λ ≥ 420 nm). Enveloped human coronavirus 229E showed a photodynamic susceptibility of ~ 99.99% inactivation after 60 min illumination (400-700 nm, 65 ± 5 mW/cm2). The presence of the disperse dyes on the fabrics showed no significant effects on the aPDI results, and furthermore, appeared to provide the photosensitizer with some measure of protection from photobleaching, thus improving the photostability of the dual-dyed fabrics. Taken together, these results suggest the feasibility of low cost, scalable and color variable thionine-conjugated TC blended fabrics as potent self-disinfecting textiles.
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Galstyan A, Strokov K. Influence of photosensitizer concentration and polymer composition on photoinduced antimicrobial activity of PVA- and PVA-chitosan-based electrospun nanomaterials cross-linked with tailor-made silicon(IV) phthalocyanine. Photochem Photobiol Sci 2022; 21:1387-1398. [PMID: 35513693 DOI: 10.1007/s43630-022-00229-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 04/04/2022] [Indexed: 11/29/2022]
Abstract
The ongoing effort to eradicate pathogenic bacteria and viruses is a major endeavor that requires development of new and innovative materials. Materials based on photodynamic action represent an emerging and attractive area of research, and therefore, a broad understanding of chemical design principles is required. In the present study, we investigated the antibacterial and antiviral activities of five different nanofibrous membranes composed of poly(vinyl alcohol) or poly(vinyl alcohol)-chitosan mixture cross-linked through silicon(IV)phthalocyanine derivative with the aim to identify the role of the carrier polymer and photosensitizers concentration on its efficacy. A straightforward cross-linking process was adopted to create a water-stable material with an almost uniform distribution of the fiber structure, as revealed by scanning electron microscopy. The results of the antimicrobial studies showed that the increase in the amount of chitosan in the polymer mixture, rather than the increase in the photosensitizer concentration, enhanced the activity of the material. Due to their visible light-triggered antimicrobial activity, the resulting materials provide valuable opportunities for both topical antimicrobial photodynamic therapy and the area of environmental remediation.
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Affiliation(s)
- Anzhela Galstyan
- Faculty of Chemistry, Center for Nanointegration Duisburg-Essen (CENIDE) and Centre for Water and Environmental Research (ZWU), University of Duisburg-Essen, Essen, Germany. .,Center for Soft Nanoscience, University of Münster, Münster, Germany.
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Wright T, Vlok M, Shapira T, Olmstead AD, Jean F, Wolf MO. Photodynamic and Contact Killing Polymeric Fabric Coating for Bacteria and SARS-CoV-2. ACS APPLIED MATERIALS & INTERFACES 2022; 14:49-56. [PMID: 34978405 PMCID: PMC8751017 DOI: 10.1021/acsami.1c14178] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 11/30/2021] [Indexed: 05/13/2023]
Abstract
The development of low-cost, non-toxic, scalable antimicrobial textiles is needed to address the spread of deadly pathogens. Here, we report a polysiloxane textile coating that possesses two modes of antimicrobial inactivation, passive contact inactivation through amine/imine functionalities and active photodynamic inactivation through the generation of reactive oxygen species (ROS). This material can be coated and cross-linked onto natural and synthetic textiles through a simple soak procedure, followed by UV cure to afford materials exhibiting no aqueous leaching and only minimal leaching in organic solvents. This coating minimally impacts the mechanical properties of the fabric while also imparting hydrophobicity. Passive inactivation of Escherichia coli (E. coli) and methicillin-resistant Staphylococcus aureus (MRSA) is achieved with >98% inactivation after 24 h, with a 23× and 3× inactivation rate increase against E. coli and MRSA, respectively, when green light is used to generate ROS. Up to 90% decrease in the infectivity of SARS-CoV-2 after 2 h of irradiated incubation with the material is demonstrated. These results show that modifying textiles with dual-functional polymers results in robust and highly antimicrobial materials that are expected to find widespread use in combating the spread of deadly pathogens.
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Affiliation(s)
- Taylor Wright
- Department
of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver BC V6T 1Z1, Canada
| | - Marli Vlok
- Department
of Biochemistry & Molecular Biology, University of British Columbia, 2350 Health Sciences Mall, Vancouver BC V6T 1Z3, Canada
| | - Tirosh Shapira
- Life
Sciences Institute, Department of Microbiology and Immunology, University of British Columbia, Vancouver BC V6T 1Z3, Canada
| | - Andrea D. Olmstead
- Life
Sciences Institute, Department of Microbiology and Immunology, University of British Columbia, Vancouver BC V6T 1Z3, Canada
| | - François Jean
- Life
Sciences Institute, Department of Microbiology and Immunology, University of British Columbia, Vancouver BC V6T 1Z3, Canada
| | - Michael O. Wolf
- Department
of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver BC V6T 1Z1, Canada
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Photodynamic Inactivation of Human Coronaviruses. Viruses 2022; 14:v14010110. [PMID: 35062314 PMCID: PMC8779093 DOI: 10.3390/v14010110] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 01/05/2022] [Accepted: 01/05/2022] [Indexed: 02/07/2023] Open
Abstract
Photodynamic inactivation (PDI) employs a photosensitizer, light, and oxygen to create a local burst of reactive oxygen species (ROS) that can inactivate microorganisms. The botanical extract PhytoQuinTM is a powerful photosensitizer with antimicrobial properties. We previously demonstrated that photoactivated PhytoQuin also has antiviral properties against herpes simplex viruses and adenoviruses in a dose-dependent manner across a broad range of sub-cytotoxic concentrations. Here, we report that human coronaviruses (HCoVs) are also susceptible to photodynamic inactivation. Photoactivated-PhytoQuin inhibited the replication of the alphacoronavirus HCoV-229E and the betacoronavirus HCoV-OC43 in cultured cells across a range of sub-cytotoxic doses. This antiviral effect was light-dependent, as we observed minimal antiviral effect of PhytoQuin in the absence of photoactivation. Using RNase protection assays, we observed that PDI disrupted HCoV particle integrity allowing for the digestion of viral RNA by exogenous ribonucleases. Using lentiviruses pseudotyped with the SARS-CoV-2 Spike (S) protein, we once again observed a strong, light-dependent antiviral effect of PhytoQuin, which prevented S-mediated entry into human cells. We also observed that PhytoQuin PDI altered S protein electrophoretic mobility. The PhytoQuin constituent emodin displayed equivalent light-dependent antiviral activity to PhytoQuin in matched-dose experiments, indicating that it plays a central role in PhytoQuin PDI against CoVs. Together, these findings demonstrate that HCoV lipid envelopes and proteins are damaged by PhytoQuin PDI and expands the list of susceptible viruses.
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