1
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Chen F, Liu L, Tang D, Zhang H, Wu N, Wang L, Li H, Xiao H, Zhou D. Treatment of Acute Wound Infections by Degradable Polymer Nanoparticle with a Synergistic Photothermal and Chemodynamic Strategy. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2309624. [PMID: 38408124 PMCID: PMC11077640 DOI: 10.1002/advs.202309624] [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: 01/07/2024] [Indexed: 02/28/2024]
Abstract
Mild-heat photothermal antibacterial therapy avoids heat-induced damage to normal tissues but causes bacterial tolerance. The use of photothermal therapy in synergy with chemodynamic therapy is expected to address this issue. Herein, two pseudo-conjugated polymers PM123 with photothermal units and PFc with ferrocene (Fc) units are designed to co-assemble with DSPE-mPEG2000 into nanoparticle NPM123/Fc. NPM123/Fc under 1064 nm laser irradiation (NPM123/Fc+NIR-II) generates mild heat and additionally more toxic ∙OH from endogenous H2O2, displaying a strong synergistic photothermal and chemodynamic effect. NPM123/Fc+NIR-II gives >90% inhibition rates against MDR ESKAPE pathogens in vitro. Metabolomics analysis unveils that NPM123/Fc+NIR-II induces bacterial metabolic dysregulation including inhibited nucleic acid synthesis, disordered energy metabolism, enhanced oxidative stress, and elevated DNA damage. Further, NPM123/Fc+NIR-II possesses >90% bacteriostatic rates at infected wounds in mice, resulting in almost full recovery of infected wounds. Immunodetection and transcriptomics assays disclose that the therapeutic effect is mainly dependent on the inhibition of inflammatory reactions and the promotion of wound healing. What is more, thioketal bonds in NPM123/Fc are susceptible to ROS, making it degradable with highly favorable biosafety in vitro and in vivo. NPM123/Fc+NIR-II with a unique synergistic antibacterial strategy would be much less prone to select bacterial resistance and represent a promising antibiotics-alternative anti-infective measure.
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Affiliation(s)
- Fangzhou Chen
- Graduate SchoolGuangzhou Medical UniversityGuangzhou511436P. R. China
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and EpidemiologyAcademy of Military Medical SciencesBeijing100071P. R. China
| | - Lin Liu
- Department of StomatologyThe First Medical CenterChinese PLA General HospitalBeijing100853P. R. China
| | - Dongsheng Tang
- Institute of ChemistryChinese Academy of SciencesBeijing100190P. R. China
| | - Hanchen Zhang
- Institute of ChemistryChinese Academy of SciencesBeijing100190P. R. China
| | - Nier Wu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and EpidemiologyAcademy of Military Medical SciencesBeijing100071P. R. China
| | - Lin Wang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and EpidemiologyAcademy of Military Medical SciencesBeijing100071P. R. China
| | - Hongbo Li
- Department of StomatologyThe First Medical CenterChinese PLA General HospitalBeijing100853P. R. China
| | - Haihua Xiao
- Institute of ChemistryChinese Academy of SciencesBeijing100190P. R. China
| | - Dongsheng Zhou
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and EpidemiologyAcademy of Military Medical SciencesBeijing100071P. R. China
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2
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Sturm S, Niegisch G, Windolf J, Suschek CV. Exposure of Bladder Cancer Cells to Blue Light (λ = 453 nm) in the Presence of Riboflavin Synergistically Enhances the Cytotoxic Efficiency of Gemcitabine. Int J Mol Sci 2024; 25:4868. [PMID: 38732087 PMCID: PMC11084806 DOI: 10.3390/ijms25094868] [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: 03/12/2024] [Revised: 04/25/2024] [Accepted: 04/28/2024] [Indexed: 05/13/2024] Open
Abstract
Non-muscle invasive bladder cancer is a common tumour in men and women. In case of resistance to the standard therapeutic agents, gemcitabine can be used as off-label instillation therapy into the bladder. To reduce potential side effects, continuous efforts are made to optimise the therapeutic potential of drugs, thereby reducing the effective dose and consequently the pharmacological burden of the medication. We recently demonstrated that it is possible to significantly increase the therapeutic efficacy of mitomycin C against a bladder carcinoma cell line by exposure to non-toxic doses of blue light (453 nm). In the present study, we investigated whether the therapeutically supportive effect of blue light can be further enhanced by the additional use of the wavelength-specific photosensitiser riboflavin. We found that the gemcitabine-induced cytotoxicity of bladder cancer cell lines (BFTC-905, SW-1710, RT-112) was significantly enhanced by non-toxic doses of blue light in the presence of riboflavin. Enhanced cytotoxicity correlated with decreased levels of mitochondrial ATP synthesis and increased lipid peroxidation was most likely the result of increased oxidative stress. Due to these properties, blue light in combination with riboflavin could represent an effective therapy option with few side effects and increase the success of local treatment of bladder cancer, whereby the dose of the chemotherapeutic agent used and thus the chemical load could be significantly reduced with similar or improved therapeutic success.
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Affiliation(s)
- Sofia Sturm
- Department of Orthopedics and Trauma Surgery, Medical Faculty, University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, Moorenstr. 5, 40225 Düsseldorf, Germany
| | - Günter Niegisch
- Department of Urology, Medical Faculty, University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, 40225 Düsseldorf, Germany
| | - Joachim Windolf
- Department of Orthopedics and Trauma Surgery, Medical Faculty, University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, Moorenstr. 5, 40225 Düsseldorf, Germany
| | - Christoph V. Suschek
- Department of Orthopedics and Trauma Surgery, Medical Faculty, University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, Moorenstr. 5, 40225 Düsseldorf, Germany
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3
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Cheng CW, Lee SY, Zhan SQ, Huang CL, Chen TY, Yuann JMP, Huang ST, Chiu CM, Liang JY. The effect of photolysis of sodium citrate treated with gold chloride using coloured light on the generation of gold nanoparticles and the repression of WiDr colon cancer cells. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2024; 251:112844. [PMID: 38224669 DOI: 10.1016/j.jphotobiol.2024.112844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/30/2023] [Accepted: 01/08/2024] [Indexed: 01/17/2024]
Abstract
Gold nanoparticles (GNPs) are usually formed via a wet chemical method using gold (III) chloride trihydrate (GC), which is treated with stable reducing agents such as sodium citrate (SC). This study determines the effect of coloured light on the formation of GNPs by irradiation of SC after the addition of GC (SCGC) and the effect of the SCGC photolytic procedure on the suppression of WiDr colon cancer cells by forming reactive oxygen species. The absorbance of surface plasmon resonance peaks at 523 nm are 0.069 and 0.219 for SCGC when treated with blue light illumination (BLI) and violet light irradiation (VLI), respectively, whereas green and red light treatments have little or no effect. Most GNPs have diameters ranging from 3 to 15 nm, with a mean of 6 nm, when SCGC is exposed to VLI for 1.5 h. Anionic superoxide radicals (O2•-) are formed in a charge-transfer process after SCGC under VLI treatment; however, BLI treatment produces no significant reaction. Moreover, SCGC under VLI treatment proves to be considerably more effective at inhibiting WiDr cells than BLI treatment, as firstly reported in this study. The reduction rates for WiDr cells treated with SCGC under BLI and VLI at an intensity of 2.0 mW/cm2 for 1.5 h (energy dose, 10.8 J/cm2) are 4.1% and 57.7%, respectively. The suppression rates for WiDr cells treated with SCGC are inhibited in an irradiance-dependent manner, the inhibition percentages being 57.7%, 63.3%, and 80.2% achieved at VLI intensities of 2.0, 4.0, and 6.0 mW/cm2 for 1.5 h, respectively. Propidium iodide is a fluorescent dye that detects DNA changes after cell death. The number of propidium iodide-positive nuclei significantly increases in WiDr cells treated with SCGC under VLI, suggesting that SCGC photolysis under VLI is a potential treatment option for the photodynamic therapy process.
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Affiliation(s)
- Chien-Wei Cheng
- Department of Biotechnology, Ming Chuan University, GuiShan 33343, Taiwan.
| | - Shwu-Yuan Lee
- Department of Tourism and Leisure, Hsing Wu University, New Taipei City 24452, Taiwan.
| | - Shao-Qi Zhan
- Department of Biotechnology, Ming Chuan University, GuiShan 33343, Taiwan.
| | - Cheng-Liang Huang
- Department of Applied Chemistry, National Chiayi University, Chiayi City 60004, Taiwan.
| | - Tang-Yu Chen
- Department of Biotechnology, Ming Chuan University, GuiShan 33343, Taiwan.
| | - Jeu-Ming P Yuann
- Department of Biotechnology, Ming Chuan University, GuiShan 33343, Taiwan.
| | - Shiuh-Tsuen Huang
- Department of Science Education and Application, National Taichung University of Education, Taichung 40306, Taiwan; Department of Soil and Environmental Sciences, National Chung Hsing University, Taichung 40200, Taiwan.
| | - Chi-Ming Chiu
- Department of Biotechnology, Ming Chuan University, GuiShan 33343, Taiwan.
| | - Ji-Yuan Liang
- Department of Biotechnology, Ming Chuan University, GuiShan 33343, Taiwan.
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4
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Chiu CM, Lee SY, Chen PR, Zhan SQ, Yuann JMP, Huang ST, Wu MF, Cheng CW, Chang YC, Liang JY. An investigation of the influence of reactive oxygen species produced from riboflavin-5'-phosphate by blue or violet light on the inhibition of WiDr colon cancer cells. Photodiagnosis Photodyn Ther 2023; 44:103810. [PMID: 37748698 DOI: 10.1016/j.pdpdt.2023.103810] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 08/17/2023] [Accepted: 09/19/2023] [Indexed: 09/27/2023]
Abstract
Riboflavin-5'-phosphate (FMN), an innocuous product of riboflavin (RF) phosphorylation, is vital for humans. FMN is sensitive to light illumination, as indicated by reactive oxygen species (ROS) formation. This investigation was undertaken to evaluate the influence of blue light illumination (BLI) and violet light illumination (VLI) upon FMN to develop a method to inhibit WiDr colon cancer cells by FMN photolysis. When FMN is subjected to BLI and VLI, it inhibits WiDr colon cancer cells by generating superoxide radical anions (O2•-). The respective reduction rates are 42.6 and 81.9 % in WiDr colon cancer cells for FMN treated with BLI and VLI at 20 W/m2 for 0.5 h. FMN treated with VLI inhibits WiDr colon cancer cells more effectively than BLI. Propidium iodide (PI) is a fluorescent dye that is used to detect abnormal DNA due to cell death by apoptosis or necrosis. The PI-positive count for nuclei increased significantly for the WiDr colon cancer cells that were treated with FMN under VLI at 20 W/m2 for 0.5 h. FMN photolysis achieved using VLI allows efficient photodynamic therapy (PDT) by triggering the cytotoxicity of FMN on WiDr colon cancer cells.
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Affiliation(s)
- Chi-Ming Chiu
- Department of Biotechnology, Ming Chuan University, GuiShan 33343, Taiwan
| | - Shwu-Yuan Lee
- Department of Tourism and Leisure, Hsing Wu University, New Taipei City 24452, Taiwan
| | - Pin-Rong Chen
- Department of Biotechnology, Ming Chuan University, GuiShan 33343, Taiwan
| | - Shao-Qi Zhan
- Department of Biotechnology, Ming Chuan University, GuiShan 33343, Taiwan
| | - Jeu-Ming P Yuann
- Department of Biotechnology, Ming Chuan University, GuiShan 33343, Taiwan
| | - Shiuh-Tsuen Huang
- Department of Science Education and Application, National Taichung University of Education, Taichung 40306, Taiwan; Department of Soil and Environmental Sciences, National Chung Hsing University, Taichung 40200, Taiwan
| | - Ming-Fang Wu
- Graduate Institute of Sports Science, National Taiwan Sport University, Taoyuan 33301, Taiwan
| | - Chien-Wei Cheng
- Department of Biotechnology, Ming Chuan University, GuiShan 33343, Taiwan
| | - Yu-Chung Chang
- Department of Biotechnology, Ming Chuan University, GuiShan 33343, Taiwan.
| | - Ji-Yuan Liang
- Department of Biotechnology, Ming Chuan University, GuiShan 33343, Taiwan.
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5
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Chen KN, Ma BG. OptoCRISPRi-HD: Engineering a Bacterial Green-Light-Activated CRISPRi System with a High Dynamic Range. ACS Synth Biol 2023; 12:1708-1715. [PMID: 37217315 DOI: 10.1021/acssynbio.3c00035] [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] [Indexed: 05/24/2023]
Abstract
The ability to modulate gene expression is crucial for studying gene function and programming cell behaviors. Combining the reliability of CRISPRi and the precision of optogenetics, the optoCRISPRi technique is emerging as an advanced tool for live-cell gene regulation. Since previous versions of optoCRISPRi often exhibit no more than a 10-fold dynamic range due to the leakage activity, they are not suitable for targets that are sensitive to such leakage or critical for cell growth. Here, we describe a green-light-activated CRISPRi system with a high dynamic range (40 fold) and the flexibility of changing targets in Escherichia coli. Our optoCRISPRi-HD system can efficiently repress essential genes, nonessential genes, or inhibit the initiation of DNA replication. Providing a regulative system with high resolution over space-time and extensive targets, our study would facilitate further research involving complex gene networks, metabolic flux redirection, or bioprinting.
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Affiliation(s)
- Ke-Ning Chen
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, China
| | - Bin-Guang Ma
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, China
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6
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Sandri A, Tessari A, Giannetti D, Cetti A, Lleo MM, Boschi F. UV-A Radiation: Safe Human Exposure and Antibacterial Activity. Int J Mol Sci 2023; 24:ijms24098331. [PMID: 37176038 PMCID: PMC10179708 DOI: 10.3390/ijms24098331] [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: 03/09/2023] [Revised: 05/02/2023] [Accepted: 05/04/2023] [Indexed: 05/15/2023] Open
Abstract
UV radiation is used for sterilization but has adverse health effects in humans. UV-A radiation has lower antimicrobial effect than UV-B and UV-C but constitutes a lower health risk, opening up the possibility to sanitize environments with human presence in controlled exposure conditions. We investigated this possibility by identifying safe exposure conditions to a UV-A lamp along with efficient sanitization of the environment. The human exposure limits were calculated following the guidelines provided by the International Commission on Non-Ionizing Radiation Protection and the International Commission on Illumination. Antibacterial activity was evaluated on Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus. The maximum human exposure duration has been identified at different irradiation distance and angle, increasing with the increase of both parameters. Bactericidal activity was observed in all microorganisms and was higher with higher exposure time and at lower distance from the source. Noteworthily, in equal conditions of radiant exposure, the exposure time impacts on the bactericidal activity more than the distance from the source. The modulation of factors such as distance from the source, exposure time and irradiation angle can enable effective antibacterial activity and human safety. Prolonged direct irradiation of the surfaces associated with indirect human exposure represents the condition of greater efficacy and safety.
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Affiliation(s)
- Angela Sandri
- Department of Diagnostics and Public Health, University of Verona, Strada Le Grazie 8, 37134 Verona, Italy
| | - Aldo Tessari
- FOR ALL Srl, Via 8 Marzo 10-12, Bussolengo, 37012 Verona, Italy
| | | | - Alberto Cetti
- FOR ALL Srl, Via 8 Marzo 10-12, Bussolengo, 37012 Verona, Italy
| | - Maria M Lleo
- Department of Diagnostics and Public Health, University of Verona, Strada Le Grazie 8, 37134 Verona, Italy
| | - Federico Boschi
- Department of Engineering for Innovation Medicine, University of Verona, Strada Le Grazie 8, 37134 Verona, Italy
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7
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Hegmann L, Sturm S, Niegisch G, Windolf J, Suschek CV. Enhancement of human bladder carcinoma cell chemosensitivity to Mitomycin C through quasi-monochromatic blue light (λ = 453 ± 10 nm). JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2022; 236:112582. [PMID: 36272336 DOI: 10.1016/j.jphotobiol.2022.112582] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 09/26/2022] [Accepted: 09/29/2022] [Indexed: 01/31/2023]
Abstract
Human urothelial bladder carcinoma (uBC) is the second most tumor entity of the urogenital tract. As far as possible, therapy for non-muscle invasive uBC takes place as resection of the tumor tissue, followed by intravesical chemotherapy or immunotherapy. Because of the high recurrence rate of uBC, there is a need for improved efficiency in the treatment. In the present in vitro study we have evaluated a new approach to enhance the cytotoxic efficiency of Mitomycin C (MMC), which is commonly used for intravesical treatment of uBC on the relevant urothelial cancer cell line RT112. For that we used quasi-monochromatic blue light (453 ± 10 nm) at its non-toxic dose of 110 J/cm2 as an additive stimulus to enhance the therapeutic efficiency of MMC (10 μg/ml). We found, that blue light exposure of RT112 cells led to a very strong increase in intracellular production of reactive oxygen species (ROS) and to a significant reduction (p < 0.05) of all function parameters of mitochondrial respiration, including basal activity and ATP production. Although not being toxic when used as a single impact, together with MMC blue light strongly enhanced the therapeutic efficiency of MMC in the form of significantly enhanced cytotoxicity via apoptosis and secondary necrosis. Our results clearly show that blue light, most likely due to its ability to increase intracellular ROS production and reduce mitochondrial respiration, increased the cytotoxic efficiency of MMC and therefore might represent an effective, low-side-effect, and success-enhancing therapy option in the local treatment of bladder cancer.
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Affiliation(s)
- Lisa Hegmann
- Department for Orthopedics and Trauma Surgery, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, Germany
| | - Sofia Sturm
- Department for Orthopedics and Trauma Surgery, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, Germany
| | - Günter Niegisch
- Department of Urology, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, Germany
| | - Joachim Windolf
- Department for Orthopedics and Trauma Surgery, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, Germany
| | - Christoph V Suschek
- Department for Orthopedics and Trauma Surgery, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, Germany.
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8
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Purbhoo-Makan M, Houreld NN, Enwemeka CS. The Effects of Blue Light on Human Fibroblasts and Diabetic Wound Healing. Life (Basel) 2022; 12:life12091431. [PMID: 36143466 PMCID: PMC9505688 DOI: 10.3390/life12091431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/31/2022] [Accepted: 09/10/2022] [Indexed: 11/16/2022] Open
Abstract
Diabetes is a serious threat to global health and is among the top 10 causes of death. The Diabetic foot ulcer (DFU) is among the most common and severe complications of the disease. Bacterial infections are common; therefore, timely aggressive management, using multidisciplinary management approaches is needed to prevent complications, morbidity, and mortality, particularly in view of the growing cases of antibiotic-resistant bacteria. Photobiomodulation (PBM) involves the application of low-level light at specific wavelengths to induce cellular photochemical and photophysical responses. Red and near-infrared (NIR) wavelengths have been shown to be beneficial, and recent studies indicate that other wavelengths within the visible spectrum could be helpful as well, including blue light (400–500 nm). Reports of the antimicrobial activity and susceptibility of blue light on several strains of the same bacterium show that many bacteria are less likely to develop resistance to blue light treatment, meaning it is a viable alternative to antibiotic therapy. However, not all studies have shown positive results for wound healing and fibroblast proliferation. This paper presents a critical review of the literature concerning the use of PBM, with a focus on blue light, for tissue healing and diabetic ulcer care, identifies the pros and cons of PBM intervention, and recommends the potential role of PBM for diabetic ulcer care.
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Affiliation(s)
- Meesha Purbhoo-Makan
- Department of Podiatry, Faculty of Health Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein 2028, South Africa
- Laser Research Center, Faculty of Health Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein 2028, South Africa
| | - Nicolette Nadene Houreld
- Laser Research Center, Faculty of Health Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein 2028, South Africa
- Correspondence:
| | - Chukuka S. Enwemeka
- Laser Research Center, Faculty of Health Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein 2028, South Africa
- College of Health and Human Services, San Diego State University, San Diego, CA 92182, USA
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9
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Mahanta N, Sharma S, Sharma LG, Pandey LM, Dixit US. Unfolding of the SARS-CoV-2 spike protein through infrared and ultraviolet-C radiation based disinfection. Int J Biol Macromol 2022; 221:71-82. [PMID: 36063893 PMCID: PMC9439869 DOI: 10.1016/j.ijbiomac.2022.08.197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 07/12/2022] [Accepted: 08/30/2022] [Indexed: 11/05/2022]
Abstract
The spreading of coronavirus from contacting surfaces and aerosols created a pandemic around the world. To prevent the transmission of SARS-CoV-2 virus and other contagious microbes, disinfection of contacting surfaces is necessary. In this study, a disinfection box equipped with infrared (IR) radiation heating and ultraviolet-C (UV-C) radiation is designed and tested for its disinfection ability against pathogenic bacteria and SARS-CoV-2 spike protein. The killing of a Gram-positive, namely, S. aureus and a Gram-negative namely, S. typhi bacteria was studied followed by the inactivation of the spike protein. The experimental parameters were optimized using a statistical tool. For the broad-spectrum antibacterial activity, the optimum condition was holding at 65.61 °C for 13.54 min. The killing of the bacterial pathogen occurred via rupturing the cell walls as depicted by electron microscopy. Further, the unfolding of SARS-CoV-2 spike protein and RNase was studied under IR and UV-C irradiations at the aforesaid optimized condition. The unfolding of both the proteins was confirmed by changes in the secondary structure, particularly an increase in β-sheets and a decrease in α-helixes. Remarkably, the higher penetration depth of IR waves up to subcutaneous tissue resulted in lower optimum disinfection temperature, <70 °C in vogue. Thus, the combined UV-C and IR radiation is effective in killing the pathogenic bacteria and denaturing the glycoproteins.
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Affiliation(s)
- Nilkamal Mahanta
- Department of Mechanical Engineering, Indian Institute of Technology Guwahati, India
| | - Swati Sharma
- Bio-Interface and Environmental Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, India
| | - Laipubam Gayatri Sharma
- Bio-Interface and Environmental Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, India
| | - Lalit M Pandey
- Bio-Interface and Environmental Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, India
| | - Uday Shanker Dixit
- Department of Mechanical Engineering, Indian Institute of Technology Guwahati, India.
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10
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Cheng CW, Lee SY, Chen TY, Yang MJ, Yuann JMP, Chiu CM, Huang ST, Liang JY. A study of the effect of reactive oxygen species induced by violet and blue light from oxytetracycline on the deactivation of Escherichia coli. Photodiagnosis Photodyn Ther 2022; 39:102917. [PMID: 35597444 DOI: 10.1016/j.pdpdt.2022.102917] [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: 04/02/2022] [Revised: 05/07/2022] [Accepted: 05/17/2022] [Indexed: 10/18/2022]
Abstract
Oxytetracycline (OTC), a tetracycline antibiotic, is a broad-spectrum antibacterial agent. In this investigation, liquid chromatography-mass spectrometry (LC-MS) is utilized to determine the effects of blue light (λ = 448 nm) illumination (BLIA) and violet light (λ = 403 nm) illumination (VLIA) on conformational changes in OTC at pH 7.8. The photochemical effect of OTC that is exposed to BLIA and VLIA on the deactivation of Escherichia coli (E. coli) is studied. The deactivation of E. coli has an insignificant effect on treatment with OTC alone. OTC is relatively unstable under BLIA and VLIA illumination in an alkaline solution, and OTC has been shown to inactivate E. coli by generating reactive oxygen species (ROS). Less anionic superoxide radicals (O2•-) are generated from OTC that is treated with BLIA than that from VLIA treatment, so OTC is more efficient in inactivating E. coli under VLIA. Inactivation of reduction rates of 0.51 and 3.65 logs in E. coli are achieved using 0.1 mM OTC under BLIA for 120 min and VLIA for 30 min, respectively, under the same illumination intensity (20 W/m2). Two photolytic products of OTC (PPOs) are produced when OTC is exposed to BLIA and VLIA, with molecular ions at m/z 447 and 431, molecular formulae C21H22N2O9 and C21H22N2O8, and masses of 446.44 and 430.44 g/mol, respectively. The results show that when exposed to VLIA, OTC exhibits enhanced inactivation of E. coli, suggesting that the photochemical treatment of OTC is a potential supplement in a hygienic process.
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Affiliation(s)
- Chien-Wei Cheng
- Department of Biotechnology, Ming Chuan University, Gui-Shan 33343, Taiwan.
| | - Shwu-Yuan Lee
- Department of Tourism and Leisure, Hsing Wu University, New Taipei City 24452, Taiwan.
| | - Tang-Yu Chen
- Department of Biotechnology, Ming Chuan University, Gui-Shan 33343, Taiwan.
| | - Meei-Ju Yang
- Tea Research and Extension Station, Yangmei 326011, Taiwan.
| | - Jeu-Ming P Yuann
- Department of Biotechnology, Ming Chuan University, Gui-Shan 33343, Taiwan
| | - Chi-Ming Chiu
- Department of Biotechnology, Ming Chuan University, Gui-Shan 33343, Taiwan.
| | - Shiuh-Tsuen Huang
- Department of Science Education and Application, National Taichung University of Education, Taichung 40306, Taiwan; Department of Soil and Environmental Sciences, National Chung Hsing University, Taichung 40200, Taiwan.
| | - Ji-Yuan Liang
- Department of Biotechnology, Ming Chuan University, Gui-Shan 33343, Taiwan.
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11
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Dong P, Zhan Y, Jusuf S, Hui J, Dagher Z, Mansour MK, Cheng J. Photoinactivation of Catalase Sensitizes Candida albicans and Candida auris to ROS-Producing Agents and Immune Cells. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2104384. [PMID: 35119220 PMCID: PMC8981478 DOI: 10.1002/advs.202104384] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 01/07/2022] [Indexed: 06/14/2023]
Abstract
Microbes have developed their own specific strategies to cope with reactive oxygen species (ROS). Catalase, a heme-containing tetramer expressed in a broad range of aerobic fungi, shows remarkable efficiency in degrading hydrogen peroxide (H2 O2 ) for fungal survival and host invasion. Here, it is demonstrated that catalase inactivation by blue light renders fungal cells highly susceptible to ROS attack. To confirm catalase as a major molecular target of blue light, wild type Candida albicans are systematically compared with a catalase-deficient mutant strain regarding their susceptibility to ROS through 410 nm treatment. Upon testing a wide range of fungal species, it is found that intracellular catalase can be effectively and universally inactivated by 410 nm blue light. It is also found that photoinactivation of catalase in combination with ROS-generating agents is highly effective in total eradication of various fungal species, including multiple Candida auris strains, the causative agent of the global fungal epidemic. In addition, photoinactivation of catalase is shown to facilitate macrophage killing of intracellular Candida albicans. The antifungal efficacy of catalase photoinactivation is further validated using a C. albicans-induced mouse model of skin abrasion. Taken together, the findings offer a novel catalase-photoinactivation approach to address multidrug-resistant Candida infections.
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Affiliation(s)
- Pu‐Ting Dong
- Department of Biomedical EngineeringBoston UniversityBostonMA02215USA
- Photonics CenterBoston UniversityBostonMA02215USA
| | - Yuewei Zhan
- Department of Biomedical EngineeringBoston UniversityBostonMA02215USA
- Photonics CenterBoston UniversityBostonMA02215USA
| | - Sebastian Jusuf
- Department of Biomedical EngineeringBoston UniversityBostonMA02215USA
- Photonics CenterBoston UniversityBostonMA02215USA
| | - Jie Hui
- Department of Biomedical EngineeringBoston UniversityBostonMA02215USA
- Photonics CenterBoston UniversityBostonMA02215USA
| | - Zeina Dagher
- Division of Infectious DiseasesMassachusetts General HospitalBostonMA02114USA
- Harvard Medical SchoolBostonMA02115USA
| | - Michael K. Mansour
- Division of Infectious DiseasesMassachusetts General HospitalBostonMA02114USA
- Harvard Medical SchoolBostonMA02115USA
| | - Ji‐Xin Cheng
- Department of Biomedical EngineeringBoston UniversityBostonMA02215USA
- Photonics CenterBoston UniversityBostonMA02215USA
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do Prado-Silva L, Brancini GT, Braga GÚ, Liao X, Ding T, Sant’Ana AS. Antimicrobial photodynamic treatment (aPDT) as an innovative technology to control spoilage and pathogenic microorganisms in agri-food products: An updated review. Food Control 2022. [DOI: 10.1016/j.foodcont.2021.108527] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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13
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Yuann JMP, Lee SY, He S, Wong TW, Yang MJ, Cheng CW, Huang ST, Liang JY. Effects of free radicals from doxycycline hyclate and minocycline hydrochloride under blue light irradiation on the deactivation of Staphylococcus aureus, including a methicillin-resistant strain. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2022; 226:112370. [PMID: 34864528 DOI: 10.1016/j.jphotobiol.2021.112370] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 11/16/2021] [Accepted: 11/24/2021] [Indexed: 12/12/2022]
Abstract
Doxycycline hyclate (DCH) and minocycline hydrochloride (MH) are tetracycline antibiotics and broad-spectrum antimicrobial agents. The changes in DCH and MH under blue light (λ = 462 nm) irradiation in alkaline conditions (BLIA) were investigated. Deactivation caused by superoxide anion radical (O2•-) and deactivation from DCH and MH during photolysis on Staphylococcus aureus (S. aureus), including methicillin-resistant S. aureus (MRSA), were studied. DCH is relatively unstable compared to MH under BLIA. The level of O2•- generated from the MH-treated photoreaction is lower than that from DCH photolysis, and the DCH-treated photoreaction is more efficient at inactivating S. aureus and MRSA at the same radiant intensity. DCH subjected to BLIA decreased the viability of S. aureus and MRSA by 3.84 and 5.15 log, respectively. Two photolytic products of DCH (PPDs) were generated under BLIA. The mass spectra of the PPDs featured molecular ions at m/z 460.8 and 458.8. The molecular formulas of the PPDs were C21H22N2O10 and C22H24N2O9, and their exact masses were 462.44 and 460.44 g/mol, respectively. These results bolster the photolytic oxidation that leads to DCH-enhanced deactivation of S. aureus and MRSA. Photochemical treatment of DCH could be applied as a supplement in hygienic processes.
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Affiliation(s)
- Jeu-Ming P Yuann
- Department of Biotechnology, Ming Chuan University, Gui Shan 333321, Taiwan
| | - Shwu-Yuan Lee
- Department of Tourism and Leisure, Hsing Wu University, New Taipei City 244012, Taiwan
| | - Sin He
- Department of Biotechnology, Ming Chuan University, Gui Shan 333321, Taiwan
| | - Tak-Wah Wong
- Department of Dermatology, National Cheng Kung University Hospital, Department of Biochemistry and Molecular Biology, College of Medicine, Center of Applied Nanomedicine, National Cheng Kung University, Tainan 70101, Taiwan
| | - Meei-Ju Yang
- Tea Research and Extension Station, Yangmei 326011, Taiwan
| | - Chien-Wei Cheng
- Department of Biotechnology, Ming Chuan University, Gui Shan 333321, Taiwan
| | - Shiuh-Tsuen Huang
- Department of Science Education and Application, National Taichung University of Education, Taichung 40306, Taiwan; Department of Soil and Environmental Sciences, National Chung Hsing University, Taichung 40200, Taiwan.
| | - Ji-Yuan Liang
- Department of Biotechnology, Ming Chuan University, Gui Shan 333321, Taiwan.
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14
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KEYVAN E, KAHRAMAN HA, TUTUN H, DONMEZ S, SEN E, DEMIRTAS A, AKYUZ AO. Inactivation efficacy of 405 nm light emitting diodes (LEDs) on Salmonella Enteritidis at different illumination temperatures. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.08721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
| | | | | | | | - Erdi SEN
- Burdur Mehmet Akif Ersoy University, Turkey
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15
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Zhang Z, Pan B, Wang L, Sun G. Photoactivities of Two Vitamin B Derivatives and Their Applications in the Perpetration of Photoinduced Antibacterial Nanofibrous Membranes. ACS APPLIED BIO MATERIALS 2021; 4:8584-8596. [DOI: 10.1021/acsabm.1c01042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zheng Zhang
- Department of Biological and Agricultural Engineering, University of California, Davis, California 95616, United States
| | - Bofeng Pan
- Department of Biological and Agricultural Engineering, University of California, Davis, California 95616, United States
| | - Luxin Wang
- Department of Food Science and Technology, University of California, Davis, California 95616, United States
| | - Gang Sun
- Department of Biological and Agricultural Engineering, University of California, Davis, California 95616, United States
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16
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Kubacka A, Rojo D, Muñoz-Batista MJ, Barbas C, Fernández-García M, Ferrer M. Metabolomics reveals synergy between Ag and g-C 3N 4 in Ag/g-C 3N 4 composite photocatalysts: a unique feature among Ag-doped biocidal materials. Metabolomics 2021; 17:53. [PMID: 34061256 DOI: 10.1007/s11306-021-01804-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 05/24/2021] [Indexed: 10/21/2022]
Abstract
INTRODUCTION The silver/graphitic carbon nitride (Ag/g-C3N4) composite system exerts biocidal activity against the pathogenic bacterium Escherichia coli 1337-H that is stronger than that of well-known silver and titanium oxide (TiO2)-based composites. However, whether the Ag/g-C3N4 composite system has biocidal properties that the parent components do or do not have as separate chemical entities and whether they differ from those in Ag/TiO2 composite photocatalysts have not been clarified. OBJECTIVE We investigated the chemical (cooperative charge handling and electronic properties) and biological (metabolic) effects exerted by the addition of Ag to g-C3N4 and to TiO2. METHODS In this work, we undertook metabolome-wide analysis by liquid chromatography-electrospray ionization-quadrupole-time of flight-mass spectrometry to compare the metabolite profiles of untreated E. coli 1337-H cells or those subjected to disinfection with Ag, g-C3N4, 2Ag/g-C3N4, TiO2 and 2Ag/TiO2. RESULTS While Ag or g-C3N4 moderately affected microbial metabolism according to the mean of the altered metabolites, multiple cell systems contributing to rapid cell death were immediately affected by the light-triggered radical species produced when Ag and g-C3N4 were as xAg/g-C3N4. The effects include drastically reduced production of small metabolites essential for detoxifying reactive oxygen species and those that regulate DNA replication fidelity, cell morphology and energy status. These biological consequences were different from those caused by Ag/TiO2-based biocides, demonstrating the uniqueness of the Ag/g-C3N4 system. CONCLUSIONS Our results support the idea that the unique Ag/g-C3N4 biocidal properties are based on synergistic action and reveal new directions for designing future photocatalysts for use in disinfection and microbial control.
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Affiliation(s)
- Anna Kubacka
- Institute of Catalysis and Petrochemistry, Consejo Superior de Investigaciones Científicas, c/Marie Curie 2, 28049, Madrid, Spain
| | - David Rojo
- Department of Chemistry and Biochemistry, Facultad de Farmacia, Centre for Metabolomics and Bioanalysis (CEMBIO), Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, 28660 Boadilla del Monte, Madrid, Spain
| | - Mario J Muñoz-Batista
- Institute of Catalysis and Petrochemistry, Consejo Superior de Investigaciones Científicas, c/Marie Curie 2, 28049, Madrid, Spain
- Department of Chemical Engineering, University of Granada, Av. de La Fuente Nueva S/N, 18071, Granada, Spain
| | - Coral Barbas
- Department of Chemistry and Biochemistry, Facultad de Farmacia, Centre for Metabolomics and Bioanalysis (CEMBIO), Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, 28660 Boadilla del Monte, Madrid, Spain
| | - Marcos Fernández-García
- Institute of Catalysis and Petrochemistry, Consejo Superior de Investigaciones Científicas, c/Marie Curie 2, 28049, Madrid, Spain.
| | - Manuel Ferrer
- Institute of Catalysis and Petrochemistry, Consejo Superior de Investigaciones Científicas, c/Marie Curie 2, 28049, Madrid, Spain.
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Antibacterial mechanism of riboflavin-mediated 460 nm light emitting diode illumination against Listeria monocytogenes in phosphate-buffered saline and on smoked salmon. Food Control 2021. [DOI: 10.1016/j.foodcont.2021.107930] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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18
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Antimicrobial activity of 405 nm light-emitting diode (LED) in the presence of riboflavin against Listeria monocytogenes on the surface of smoked salmon. Food Sci Biotechnol 2021; 30:609-618. [PMID: 33936853 DOI: 10.1007/s10068-021-00895-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 01/28/2021] [Accepted: 02/18/2021] [Indexed: 10/21/2022] Open
Abstract
This study investigated the antimicrobial activity of 405 nm light-emitting diode (LED) with and without riboflavin against Listeria monocytogenes in phosphate buffered saline (PBS) and on smoked salmon at different storage temperatures and evaluated its impact on food quality. The results show that riboflavin-mediated LED illumination in PBS 25 °C significantly inactivated L. monocytogenes cells by 6.2 log CFU/mL at 19.2 J/cm2, while illumination alone reduced 1.9 log CFU/mL of L. monocytogenes populations at 57.6 J/cm2. L. monocytogenes populations on illuminated smoked salmon decreased by 1.0-2.2 log CFU/cm2 at 1.27-2.76 kJ/cm2 at 4, 12, and 25 °C, regardless of the presence of riboflavin. Although illumination with and without riboflavin caused the lipid peroxidation and color change in smoked salmon, this study demonstrates the potential of a 405 nm LED to preserve the smoked salmon products, reducing the risk of listeriosis.
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Abstract
Catechin exhibits numerous physiological characteristics. In this study, we determined the photosensitivity of catechin to various lights under alkaline conditions, and the mechanisms by which catechin generates free radical species and polymerizes via a photoreaction. In addition to this, the application of catechin photolysis was investigated. A solution of catechin is transparent, but turns yellowish under blue light illumination (BLI) in neutral or weak alkaline solutions. When catechin is subjected to BLI, a dimeric catechin (proanthocyanidin) and a superoxide anion radical (O2•−) are generated in a photolytic reaction. When ascorbic acid or gallic acid is added to catechin and the mixture is subjected to BLI at alkaline pH, fewer catechin dimers and less O2•− are produced, because both acids inhibit the photosensitive oxidation of catechin. When AlCl3 is added to catechin and the mixture is subjected to BLI at pH 8, a photolytic reaction is suppressed by AlCl3, and AlCl3 acts as a catalyst for the disconnection of proanthocyanidin during photolysis. Under alkaline conditions, catechin generates O2•− via photosensitive oxidation, which suppresses the growth of Acinetobacter baumannii (A. baumannii) by at least 4 logs, and deactivates its multi-drug-resistant strain. This study shows that catechin photolysis is a process of oxidation, and that it can be safely applied as a tool for environmental applications.
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20
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Raber HF, Heerde T, El Din SN, Flaig C, Hilgers F, Bitzenhofer N, Jäger KE, Drepper T, Gottschalk KE, Bodenberger NE, Weil T, Kubiczek DH, Rosenau F. Azulitox—A Pseudomonas aeruginosa P28-Derived Cancer-Cell-Specific Protein Photosensitizer. Biomacromolecules 2020; 21:5067-5076. [DOI: 10.1021/acs.biomac.0c01216] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Heinz Fabian Raber
- Institute for Pharmaceutical Biotechnology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Thomas Heerde
- Institute for Pharmaceutical Biotechnology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Suzanne Nour El Din
- Institute for Pharmaceutical Biotechnology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Carolin Flaig
- Institute for Pharmaceutical Biotechnology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
- Institute for Experimental Physics, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Fabienne Hilgers
- Institute of Molecular Enzyme Technology, Heinrich Heine University Düsseldorf at Forschungszentrum Jülich, Stetternicher Forst, 52426 Jülich, Germany
| | - Nora Bitzenhofer
- Institute of Molecular Enzyme Technology, Heinrich Heine University Düsseldorf at Forschungszentrum Jülich, Stetternicher Forst, 52426 Jülich, Germany
| | - Karl-Erich Jäger
- Institute of Molecular Enzyme Technology, Heinrich Heine University Düsseldorf at Forschungszentrum Jülich, Stetternicher Forst, 52426 Jülich, Germany
- Institute of Bio- and Geosciences (IBG-1: Biotechnology) Forschungszentrum Jülich, Stetternicher Forst, 52426 Jülich, Germany
| | - Thomas Drepper
- Institute of Molecular Enzyme Technology, Heinrich Heine University Düsseldorf at Forschungszentrum Jülich, Stetternicher Forst, 52426 Jülich, Germany
| | - Kay-Eberhard Gottschalk
- Institute for Experimental Physics, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | | | - Tanja Weil
- Max Planck Institute for Polymer Research Mainz, Ackermannweg 10, 55128 Mainz, Germany
| | - Dennis Horst Kubiczek
- Institute for Pharmaceutical Biotechnology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Frank Rosenau
- Institute for Pharmaceutical Biotechnology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
- Max Planck Institute for Polymer Research Mainz, Ackermannweg 10, 55128 Mainz, Germany
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21
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Antimicrobial Photoinactivation Approach Based on Natural Agents for Control of Bacteria Biofilms in Spacecraft. Int J Mol Sci 2020; 21:ijms21186932. [PMID: 32967302 PMCID: PMC7554952 DOI: 10.3390/ijms21186932] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 09/16/2020] [Accepted: 09/17/2020] [Indexed: 01/08/2023] Open
Abstract
A spacecraft is a confined system that is inhabited by a changing microbial consortium, mostly originating from life-supporting devices, equipment collected in pre-flight conditions, and crewmembers. Continuous monitoring of the spacecraft’s bioburden employing culture-based and molecular methods has shown the prevalence of various taxa, with human skin-associated microorganisms making a substantial contribution to the spacecraft microbiome. Microorganisms in spacecraft can prosper not only in planktonic growth mode but can also form more resilient biofilms that pose a higher risk to crewmembers’ health and the material integrity of the spacecraft’s equipment. Moreover, bacterial biofilms in space conditions are characterized by faster formation and acquisition of resistance to chemical and physical effects than under the same conditions on Earth, making most decontamination methods unsafe. There is currently no reported method available to combat biofilm formation in space effectively and safely. However, antibacterial photodynamic inactivation based on natural photosensitizers, which is reviewed in this work, seems to be a promising method.
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22
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Leelanarathiwat K, Katsuta Y, Katsuragi H, Watanabe F. Antibacterial activity of blue high-power light-emitting diode-activated flavin mononucleotide against Staphylococcus aureus biofilm on a sandblasted and etched surface. Photodiagnosis Photodyn Ther 2020; 31:101855. [PMID: 32512247 DOI: 10.1016/j.pdpdt.2020.101855] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 05/29/2020] [Accepted: 06/01/2020] [Indexed: 12/23/2022]
Abstract
BACKGROUND Because of high affinity to the titanium implant surface, Staphylococcus aureus (S. aureus) has been reported as key microorganism that cause the peri-implantitis, even though it is not the typical periodontal pathogenic bacterial strain. The aim of this study was to evaluate the antibacterial property of the aPDT device, using blue high-power LED light activated flavin mononucleotide, comparing to the previously proven aPDT method using methylene blue and red laser on S. aureus biofilm. METHODS Commercial pure titanium grade 4 modified surface with SLA were used to form S. aureus biofilm for 48 h. Two aPDT systems were used in this study; 1) HELBO®Blue Photosensitizer (Bredent medical), which is methylene blue (MB) activated by 670-nm red diode laser and 2) FotoSan® Blue agent Gel (CMS Dental), which contains flavin mononucleotide (FMN) activated by FotoSan® BLUE LAD (Light Activated Disinfection) light. The antibacterial tests were performed by total viable count, crystal violet assay, and direct observation methods. RESULTS Using the light activated-PS, the log reduction in CFU/mL compared to non-treatment was 1.23 ± 0.19 log10 and 1.23 ± 0.12 log10 (about 93 % of reduction) for MB and FMN, respectively. The significant difference in the reduction could be determined when comparing with using only light (p < 0.01). Regarding two aPDT systems, the decrease in amount of bacteria after treatment was not significantly different (p > 0.05). CONCLUSION The antibacterial activities of aPDT using blue high-power LED light activated flavin mononucleotide on S. aureus biofilm was comparable to those of previous research supporting aPDT using photoactivated MB.
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Affiliation(s)
- Kanda Leelanarathiwat
- Department of Prosthodontics, Faculty of Dentistry, Mahidol University, 6, Yothi Road, Ratchathewi District, Bangkok, 10400, Thailand.
| | - Yasuhiro Katsuta
- Department of Crown & Bridge Prosthodontics, The Nippon Dental University School of Life Dentistry at Niigata, 1-8 Hamauracho, Chuo-ku, Niigata-shi, Niigata, 951-8580, Japan.
| | - Hiroaki Katsuragi
- Department of Oral Microbiology, The Nippon Dental University School of Life Dentistry at Niigata, 1-8 Hamauracho, Chuo-ku, Niigata-shi, Niigata, 951-8580, Japan.
| | - Fumihiko Watanabe
- Department of Crown & Bridge Prosthodontics, The Nippon Dental University School of Life Dentistry at Niigata, 1-8 Hamauracho, Chuo-ku, Niigata-shi, Niigata, 951-8580, Japan; Functional Occlusal Treatment, The Nippon Dental University Graduate School of Life Dentistry at Niigata, 1-8 Hamauracho, Chuo-ku, Niigata-shi, Niigata, 951-8580, Japan.
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Kvam E, Benner K. Mechanistic insights into UV-A mediated bacterial disinfection via endogenous photosensitizers. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 209:111899. [PMID: 32485344 DOI: 10.1016/j.jphotobiol.2020.111899] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 05/13/2020] [Accepted: 05/15/2020] [Indexed: 01/09/2023]
Abstract
UV-A and visible light are thought to excite endogenous photosensitizers in microbes, thereby initiating complex chemical interactions that ultimately kill cells. Natural solar-based disinfection methods have been adapted into commercial lighting technologies with varying degrees of reported efficacy and associated safety hazards for human exposure. Here we utilize a narrow-spectrum UV-A LED prototype (currently in development for health care applications) to investigate the mechanism of bacterial photoinactivation using 365 nm light. Using a combination of reverse genetics and biochemical investigation, we report mechanistic evidence that 365nm light initiates a chain-reaction of superoxide-mediated damage via auto-excitation of vitamin-based electron carriers, specifically vitamin K2 menaquinones and the FAD flavoprotein in Complex II in the electron transport chain. We observe that photoinactivation is modifiable through supplementation of the environment to bypass cell damage. Lastly, we observe that bacteria forced into metabolic dormancy by desiccation become hypersensitized to the effects of UV-A light, thereby permitting photoinactivation at fluences that are significantly lower than the industry threshold for safe human exposure. In total, these results substantiate the mechanism and potential application of narrow- spectrum UV-A light for bacterial disinfection purposes.
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Affiliation(s)
- Erik Kvam
- GE Research, One Research Circle, Niskayuna, NY 12309, USA.
| | - Kevin Benner
- GE Current, a Daintree Company, East Cleveland, OH 44112, USA
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The Influence of the Degradation of Tetracycline by Free Radicals from Riboflavin-5'-Phosphate Photolysis on Microbial Viability. Microorganisms 2019; 7:microorganisms7110500. [PMID: 31661888 PMCID: PMC6920948 DOI: 10.3390/microorganisms7110500] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 10/19/2019] [Accepted: 10/26/2019] [Indexed: 11/17/2022] Open
Abstract
Tetracycline (TC) is a broad-spectrum antibiotic compound. Wastewater with TC may have an adverse effect on ecosystems. Riboflavin-5′-phosphate (FMN or flavin mononucleotide) is a non-toxic product of the phosphorylation of vitamin B2 and is required for the proper functioning of the humans. FMN is sensitized to ultraviolet (UV) and blue light radiation, as evidenced by the generation of reactive oxygen species (ROS). This study inspects feasible applications of blue light on FMN so as to develop a valid way of degrading TC by FMN photolysis. We used the increased rate of bacterial survival as a practical indicator of antibiotic degradation. TC in the presence of FMN solution decomposed completely after 20 W/m2 of blue light irradiation (TCF treatment), and the degradation of TC (D-TCF) occurred after the photolytic process. After TCF treatment, colony-forming units (CFUs) of Escherichia coli (E. coli) were determined for the D-TCF solution. The CFU of E. coli preservation was 93.2% of the D-TCF solution (50 μg/mL of TC in the presence of 114 μg/mL of FMN solution treated with 20 W/m2 of blue light irradiation at 25 °C for 1 h) cultivation. The mass spectrum of D-TCF showed diagnostic ion signals at m/z 431.0 and 414.0 Da. The molecular formula of D-TCF was C21H22N2O8, and the exact mass was 430.44 g/mol. TC degradation by FMN photolysis can significantly decrease the antimicrobial ability of TC. The results expressed here regarding the influence of FMN photolysis on TC degradation offer an environmentally sound wastewater treatment method.
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25
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Novel LDPE-riboflavin composite film with dual function of broad-spectrum light barrier and antimicrobial activity. Food Control 2019. [DOI: 10.1016/j.foodcont.2019.01.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Huang ST, Hung YA, Yang MJ, Chen IZ, Yuann JMP, Liang JY. Effects of Epigallocatechin Gallate on the Stability of Epicatechin in a Photolytic Process. Molecules 2019; 24:molecules24040787. [PMID: 30813243 PMCID: PMC6413119 DOI: 10.3390/molecules24040787] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 02/11/2019] [Accepted: 02/19/2019] [Indexed: 12/16/2022] Open
Abstract
Catechins belonging to polyhydroxylated polyphenols are the primary compounds found in green tea. They are associated with many physiological properties. Epicatechin (EC) is a non-gallate-type catechin with four phenolic hydroxyl groups attached. The changes in EC treated with color light illumination in an alkaline condition were investigated by chromatographic and mass analyses in this study. In particular, the superoxide anion radical (O₂•-) was investigated during the EC photolytic process. EC is unstable under blue light illumination in an alkaline solution. When EC was treated with blue light illumination in an alkaline solution, O₂•- was found to occur via a photosensitive redox reaction. In addition, the generation of monomeric, dimeric, and trimeric compounds is investigated. On the other hand, epigallocatechin gallate (EGCG), which is a gallate-type catechin, is stable under blue light illumination in an alkaline solution. Adding EGCG, during the blue light illumination treatment of EC decreased photolytic formation, suggesting that gallate-type catechins can suppress the photosensitive oxidation of EC. Gallate-type catechins are formed via the esterification of non-gallate-type catechins and gallic acid (GA). The carbonyl group on the gallate moiety of gallate-type catechins appears to exhibit its effect on the stability against the photosensitive oxidation caused by blue light illumination.
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Affiliation(s)
- Shiuh-Tsuen Huang
- Department of Science Education and Application, National Taichung University of Education, Taichung 40306, Taiwan.
| | - Yi-An Hung
- Department of Biotechnology, Ming-Chuan University, Gui-Shan 33343, Taiwan.
| | - Meei-Ju Yang
- Tea Research and Extension Station, Taoyuan 32654, Taiwan.
| | - Iou-Zen Chen
- Department of Horticulture and Landscape Architecture, National Taiwan University, Taipei 10617, Taiwan.
| | - Jeu-Ming P Yuann
- Department of Biotechnology, Ming-Chuan University, Gui-Shan 33343, Taiwan.
| | - Ji-Yuan Liang
- Department of Biotechnology, Ming-Chuan University, Gui-Shan 33343, Taiwan.
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Hamblin MR, Abrahamse H. Can light-based approaches overcome antimicrobial resistance? Drug Dev Res 2019; 80:48-67. [PMID: 30070718 PMCID: PMC6359990 DOI: 10.1002/ddr.21453] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 07/06/2018] [Accepted: 07/07/2018] [Indexed: 01/10/2023]
Abstract
The relentless rise of antibiotic resistance is considered one of the most serious problems facing mankind. This mini-review will cover three cutting-edge approaches that use light-based techniques to kill antibiotic-resistant microbial species, and treat localized infections. First, we will discuss antimicrobial photodynamic inactivation using rationally designed photosensitizes combined with visible light, with the added possibility of strong potentiation by inorganic salts such as potassium iodide. Second, the use of blue and violet light alone that activates endogenous photoactive porphyrins within the microbial cells. Third, it is used for "safe UVC" at wavelengths between 200 nm and 230 nm that can kill microbial cells without damaging host mammalian cells. We have gained evidence that all these approaches can kill multidrug resistant bacteria in vitro, and they do not induce themselves any resistance, and moreover can treat animal models of localized infections caused by resistant species that can be monitored by noninvasive bioluminescence imaging. Light-based antimicrobial approaches are becoming a growing translational part of anti-infective treatments in the current age of resistance.
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Affiliation(s)
- Michael R Hamblin
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, Massachusetts
- Department of Dermatology, Harvard Medical School, Boston, Massachusetts
- Harvard-MIT Division of Health Sciences and Technology, Cambridge, Massachusetts
| | - Heidi Abrahamse
- Laser Research Centre, Faculty of Health Science, University of Johannesburg, South Africa
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Yang MY, Chang KC, Chen LY, Hu A. Low-dose blue light irradiation enhances the antimicrobial activities of curcumin against Propionibacterium acnes. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2018; 189:21-28. [PMID: 30273795 DOI: 10.1016/j.jphotobiol.2018.09.021] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 09/09/2018] [Accepted: 09/24/2018] [Indexed: 01/06/2023]
Abstract
Propionibacterium acnes (P. acnes) is an opportunistic infection in human skin that causes acne vulgaris. Antibiotic agents provide the effective eradication of microbes until the development of drug-resistant microbes. Photodynamic inactivation (PDI) is a non-antibiotic therapy for microbial eradication. In this study, the visible blue light (BL, λmax = 462 nm) was used to enhance the antimicrobial activities of curcumin, a natural phenolic compound. Individual exposure to curcumin or BL irradiation does not generate cytotoxicity on P. acnes. The viability of P. acnes was decreased significantly in 0.09 J/cm2 BL with 1.52 μM of curcumin. Furthermore, the low-dose blue light irradiation triggers a series of cytotoxic actions of curcumin on P. acnes. The lethal factors of photolytic curcumin were investigated based on the morphology of P. acnes by SEM and fluorescent images. The membrane disruption of microbes was observed on the PDI against P. acnes. Chromatography and mass spectrometry techniques were also used to identify the photolytic metabolites. Curcumin could be photolysed into vanillin through BL irradiation, which presents a strong linear relationship in quantitation. Because the safety of blue light in mammalian cell has been proven, the photolytic curcumin treatment could support non-antibiotic therapy to eradicate P. acnes on clinical dermatology.
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Affiliation(s)
- Ming-Yeh Yang
- Institute of Medical Sciences, Tzu-Chi University, Hualien 970, Taiwan
| | - Kai-Chih Chang
- Department of Laboratory Medicine and Biotechnology, Tzu-Chi University, Hualien 970, Taiwan; Department of Laboratory Medicine, Buddhist Tzu-Chi General Hospital, Hualien, Taiwan
| | - Liang-Yü Chen
- Department of Biotechnology, Ming-Chuan University, Taoyuan City 333, Taiwan.
| | - Anren Hu
- Department of Laboratory Medicine and Biotechnology, Tzu-Chi University, Hualien 970, Taiwan.
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Effects of 462 nm Light-Emitting Diode on the Inactivation of Escherichia coli and a Multidrug-Resistant by Tetracycline Photoreaction. J Clin Med 2018; 7:jcm7090278. [PMID: 30213146 PMCID: PMC6162831 DOI: 10.3390/jcm7090278] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 09/06/2018] [Accepted: 09/10/2018] [Indexed: 02/06/2023] Open
Abstract
The adaptability of bacterial resistance to antibiotics contributes to its high efficiency during evolution. Tetracycline (TC) is a broad-spectrum antimicrobial agent. Chromatographic analyses and mass spectrometry were used to study the effects of the light illumination of a 462 nm light-emitting diode (LED) on the conformational changes of TC in a phosphate buffer solution (PBS, pH 7.8). Especially, the inactivation of superoxide anion radicals (O2•−) and Escherichia coli (E. coli), including that of a multidrug-resistant E. coli (MDR E. coli), were investigated during the photolysis of TC. A photolysis product of TC (PPT) was generated in an alkaline solution after the illumination of a blue light. The mass spectra of PPT had characteristic ion signals in m/z 459, 445, and 249.1 Da. The PPT has the molecular formula of C22H22N2O9, and the exact mass is 458.44 g/mol. The inactivation of MDR E. coli is not significant with TC treatment. The drug-resistant ability of MDR E. coli has a less significant effect on PPT, and the changed conformation of TC retained the inactivation ability of MDR E. coli upon blue light photoreaction. With TC, illuminated by a blue light in a pH 7.8 PBS, O2•− was generated from TC photolysis, which enhanced the inactivation of E. coli and MDR E. coli. A 96.6% inactivation rate of MDR E. coli was reached with TC under 2.0 mW/cm2 blue light illumination at 25 ± 3 °C for 120 min, and the effects of the TC-treated photoreaction on MDR E. coli viability repressed the growth of MDR E. coli by 4 to 5 logs. The present study of the blue light photoreaction of TC offers a new approach to the inactivation of MDR E. coli.
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Yang MJ, Hung YA, Wong TW, Lee NY, Yuann JMP, Huang ST, Wu CY, Chen IZ, Liang JY. Effects of Blue-Light-Induced Free Radical Formation from Catechin Hydrate on the Inactivation of Acinetobacter baumannii, Including a Carbapenem-Resistant Strain. Molecules 2018; 23:molecules23071631. [PMID: 29973539 PMCID: PMC6100571 DOI: 10.3390/molecules23071631] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 06/29/2018] [Accepted: 07/02/2018] [Indexed: 01/22/2023] Open
Abstract
Catechin is a flavan-3-ol, a derivative of flavans, with four phenolic hydroxyl groups, which exhibits a wide range of physiological properties. Chromatographic analyses were employed to examine the effects of blue light irradiation on the changes of catechin hydrate in an alkaline condition. In particular, the detection of a superoxide anion radical (O2•−), a reactive oxygen species (ROS), and the inactivation of Acinetobacter baumannii (A. baumannii)—including a carbapenem-resistant A. baumannii (CRAB)—was investigated during the photoreaction of catechin hydrate. Following basification with blue light irradiation, the transparent solution of catechin hydrate turned yellowish, and a chromogenic catechin dimer was separated and identified as a proanthocyanidin. Adding ascorbic acid during the photolytic treatment of catechin hydrate decreased the dimer formation, suggesting that ascorbic acid can suppress the photosensitive oxidation of catechin. When catechin hydrate was irradiated by blue light in an alkaline solution, O2•− was produced via photosensitized oxidation, enhancing the inactivation of A. baumannii and CRAB. The present findings on the photon-induced oxidation of catechin hydrate provides a safe practice for the inactivation of environmental microorganisms.
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Affiliation(s)
- Meei-Ju Yang
- Tea Research and Extension Station, Taoyuan 32654, Taiwan.
| | - Yi-An Hung
- Department of Biotechnology, Ming-Chuan University, Gui-Shan 33343, Taiwan.
| | - Tak-Wah Wong
- Department of Dermatology, Department of Biochemistry and Molecular Biology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan.
| | - Nan-Yao Lee
- Division of Infection, Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan.
| | - Jeu-Ming P Yuann
- Department of Biotechnology, Ming-Chuan University, Gui-Shan 33343, Taiwan.
| | - Shiuh-Tsuen Huang
- Department of Science Education and Application, National Taichung University of Education, Taichung 40306, Taiwan.
| | - Chun-Yi Wu
- Department of Biotechnology, Ming-Chuan University, Gui-Shan 33343, Taiwan.
| | - Iou-Zen Chen
- Department of Horticulture and Landscape Architecture, National Taiwan University, Taipei 10617, Taiwan.
| | - Ji-Yuan Liang
- Department of Biotechnology, Ming-Chuan University, Gui-Shan 33343, Taiwan.
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31
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Li X, Kim MJ, Yuk HG. Influence of 405 nm light-emitting diode illumination on the inactivation of Listeria monocytogenes and Salmonella spp. on ready-to-eat fresh salmon surface at chilling storage for 8 h and their susceptibility to simulated gastric fluid. Food Control 2018. [DOI: 10.1016/j.foodcont.2018.01.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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32
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Plavskii VY, Mikulich AV, Tretyakova AI, Leusenka IA, Plavskaya LG, Kazyuchits OA, Dobysh II, Krasnenkova TP. Porphyrins and flavins as endogenous acceptors of optical radiation of blue spectral region determining photoinactivation of microbial cells. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2018; 183:172-183. [PMID: 29715591 DOI: 10.1016/j.jphotobiol.2018.04.021] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 03/19/2018] [Accepted: 04/14/2018] [Indexed: 12/23/2022]
Abstract
It is shown that exposure of suspensions of gram-positive Staphylococcus aureus, gram-negative Escherichia coli and yeast-like fungi Candida albicans to laser radiation of blue spectral region with 405 and 445 nm causes their growth inhibition without prior addition of exogenous photosensitizers. It is experimentally confirmed that compounds of flavin type capable of sensitizing the formation of reactive oxygen species can act as acceptors of optical radiation of blue spectral region determining its antimicrobial effect along with endogenous metal-free porphyrins (the role of endogenous porphyrins has been confirmed earlier by a number of researchers). The participation of these compounds in the antimicrobial effect of laser radiation is supported by the registration of porphyrin and flavin fluorescence in extracts of microbial cells upon excitation by radiation used to inactivate the pathogens. In addition, the intensity of the porphyrin fluorescence in extracts of microbial cells in the transition from radiation with λ = 405 nm to radiation with λ = 445 nm decreases by 15-30 times, whereas the photosensitivity of the cells under study in this transition decreases only 3.7-6.2 times. The contribution of porphyrin photosensitizers is most pronounced upon exposure to radiation with λ = 405 nm (absorption maximum of the Soret band of porphyrins), and flavins - upon exposure to radiation with λ = 445 nm (maximum in the flavin absorption spectrum and minimum in the absorption spectrum of porphyrins). The ratio between the intensity of the porphyrin and flavin components in the fluorescence spectrum of extracts depends on the type of microbial cells.
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Affiliation(s)
- V Yu Plavskii
- State Scientific Institution B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus, 220072 Minsk, 68-2 Nezavisimosti ave., Belarus.
| | - A V Mikulich
- State Scientific Institution B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus, 220072 Minsk, 68-2 Nezavisimosti ave., Belarus
| | - A I Tretyakova
- State Scientific Institution B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus, 220072 Minsk, 68-2 Nezavisimosti ave., Belarus
| | - I A Leusenka
- State Scientific Institution B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus, 220072 Minsk, 68-2 Nezavisimosti ave., Belarus
| | - L G Plavskaya
- State Scientific Institution B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus, 220072 Minsk, 68-2 Nezavisimosti ave., Belarus
| | - O A Kazyuchits
- Republican Manufacturing Unitary Enterprise Academpharm, 220141 Minsk, Kuprevich st. 5/3, Belarus
| | - I I Dobysh
- Republican Manufacturing Unitary Enterprise Academpharm, 220141 Minsk, Kuprevich st. 5/3, Belarus
| | - T P Krasnenkova
- Republican Manufacturing Unitary Enterprise Academpharm, 220141 Minsk, Kuprevich st. 5/3, Belarus
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Yang MY, Chang KC, Chen LY, Wang PC, Chou CC, Wu ZB, Hu A. Blue light irradiation triggers the antimicrobial potential of ZnO nanoparticles on drug-resistant Acinetobacter baumannii. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2018; 180:235-242. [PMID: 29475122 DOI: 10.1016/j.jphotobiol.2018.02.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 12/16/2017] [Accepted: 02/05/2018] [Indexed: 01/19/2023]
Abstract
Photodynamic inactivation (PDI) is a non-invasive and safe therapeutic method for microbial infections. Bacterial antibiotic resistance is caused by antibiotics abuse. Drug-resistant Acinetobacter spp. is a serious problem in hospitals around the world. These pathogens from nosocomial infections have high mortality rates in frailer people, and Acinetobacter spp. is commonly found in immunocompromised patients. Visible light is safer than ultraviolet light (UV) for PDI of nosocomial pathogens with mammalian cells. Zinc oxide nanoparticles (ZnO-NPs) were used in this study as an antimicrobial agent and a photosensitizer. ZnO is recognized as safe and has extensive usage in food additives, medical and cosmetic products. In this study, we used 0.125 mg/ml ZnO-NPs combined with 10.8 J/cm2 blue light (BL) on Acinetobacter baumannii (A. baumannii) that could significantly reduce microbial survival. However, individual exposure to ZnO-NPs does not affect the viability of A. baumannii. BL irradiation could trigger the antimicrobial ability of ZnO nanoparticles on A. baumannii. The mechanism of photocatalytic ZnO-NPs treatment for sterilization occurs through bacterial membrane disruptions. Otherwise, the photocatalytic ZnO-NPs treatment showed high microbial eradication in nosocomial pathogens, including colistin-resistant and imipenem-resistant A. baumannii and Klebsiella pneumoniae. Based on our results, the photocatalytic ZnO-NPs treatment could support hygiene control and clinical therapies without antibiotics to nosocomial bacterial infections.
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Affiliation(s)
- Ming-Yeh Yang
- Institute of Medical Sciences, Tzu-Chi University, Hualien 970, Taiwan
| | - Kai-Chih Chang
- Department of Laboratory Medicine and Biotechnology, Tzu-Chi University, Hualien 970, Taiwan; Department of Laboratory Medicine, Buddhist Tzu-Chi General Hospital, Hualien, Taiwan
| | - Liang-Yu Chen
- Department of Biotechnology, Ming-Chuan University, Taoyuan 333, Taiwan
| | - Po-Ching Wang
- Department of Laboratory Medicine and Biotechnology, Tzu-Chi University, Hualien 970, Taiwan
| | - Chih-Chiang Chou
- Center for General Education, National Quemoy University, Kinmen, 892, Taiwan
| | - Zhong-Bin Wu
- National Taitung Jr. College, Taitung 950, Taiwan
| | - Anren Hu
- Department of Laboratory Medicine and Biotechnology, Tzu-Chi University, Hualien 970, Taiwan.
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34
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Liang JY, Yuann JMP, Hsie ZJ, Huang ST, Chen CC. Blue light induced free radicals from riboflavin in degradation of crystal violet by microbial viability evaluation. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 174:355-363. [DOI: 10.1016/j.jphotobiol.2017.08.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 08/09/2017] [Accepted: 08/09/2017] [Indexed: 11/28/2022]
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35
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Wong TW, Cheng CW, Hsieh ZJ, Liang JY. Effects of blue or violet light on the inactivation of Staphylococcus aureus by riboflavin-5'-phosphate photolysis. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 173:672-680. [PMID: 28715781 DOI: 10.1016/j.jphotobiol.2017.07.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 06/11/2017] [Accepted: 07/10/2017] [Indexed: 10/19/2022]
Abstract
The light sensitive compound riboflavin-5'-phosphate (or flavin mononucleotide, FMN) generates reactive oxygen species (ROS) upon photo-irradiation. FMN is required by all flavoproteins because it is a cofactor of biological blue-light receptors. The photochemical effects of FMN after irradiation by blue or violet light on the inactivation of Staphylococcus aureus strains, including a methicillin-resistant strain (MRSA), were investigated in this study. Upon blue- or violet-light photo-treatment, FMN was shown to inactivate S. aureus due to the generated ROS. Effective bacterial inactivation can be achieved by FMN photolysis without an exogenous electron provider. Inactivation rates of 94.9 and 95.2% in S. aureus and MRSA, respectively, can be reached by blue light irradiation (2.0mW/cm2) with 120μM FMN for 120min. A lower FMN concentration and a shorter time are required to reach similar effects by violet light irradiation. Inactivation rates of 96.3 and 97.0% in S. aureus and MRSA, respectively, can be reached by violet light irradiation (1.0mW/cm2) with 30μM FMN for 30min. The sensitivity of the inherent photosensitizers is lower under blue-light irradiation. A long exposure photolytic treatment of FMN by blue light is required to inactivate S. aureus. Violet light was found to be more efficient in S. aureus inactivation at the same radiant intensity. FMN photolysis with blue or violet light irradiation enhanced the inactivation rates of S. aureus and MRSA. FMN photochemical treatment could be a supplemental technique in hygienic decontamination processes.
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Affiliation(s)
- Tak-Wah Wong
- Department of Dermatology, Department of Biochemistry and Molecular Biology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan
| | - Chien-Wei Cheng
- Department of Biotechnology, Ming-Chuan University, Taoyüan 33343, Taiwan
| | - Zong-Jhe Hsieh
- Department of Biotechnology, Ming-Chuan University, Taoyüan 33343, Taiwan
| | - Ji-Yuan Liang
- Department of Biotechnology, Ming-Chuan University, Taoyüan 33343, Taiwan.
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36
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Vollmerhausen T, Conneely A, Bennett C, Wagner V, Victor J, O'Byrne C. Visible and UVA light as a potential means of preventing Escherichia coli biofilm formation in urine and on materials used in urethral catheters. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 170:295-303. [DOI: 10.1016/j.jphotobiol.2017.04.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 04/13/2017] [Accepted: 04/17/2017] [Indexed: 12/25/2022]
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37
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Yang P, Wang N, Wang C, Yao Y, Fu X, Yu W, Cai R, Yao M. 460nm visible light irradiation eradicates MRSA via inducing prophage activation. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 166:311-322. [DOI: 10.1016/j.jphotobiol.2016.12.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2016] [Revised: 12/01/2016] [Accepted: 12/03/2016] [Indexed: 12/20/2022]
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38
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Cheng CW, Chen LY, Chou CW, Liang JY. Investigations of riboflavin photolysis via coloured light in the nitro blue tetrazolium assay for superoxide dismutase activity. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2015; 148:262-267. [PMID: 25985146 DOI: 10.1016/j.jphotobiol.2015.04.028] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 04/23/2015] [Accepted: 04/30/2015] [Indexed: 11/29/2022]
Abstract
Determination of the superoxide dismutase activity is an important issue in the fields of biochemistry and the medical sciences. In the riboflavin/nitro blue tetrazolium (B2/NBT) method, the light sources used for generating superoxide anion radicals from light-excited riboflavin are normally fluorescent lamps. However, the conditions of B2/NBT experiments vary. This study investigated the effect of the light source on the light-excitation of riboflavin. The effectiveness of the photolysis was controlled by the wavelength of the light source. The spectra of fluorescent lamps are composed of multiple colour lights, and the emission spectra of fluorescent lamps made by different manufacturers may vary. Blue light was determined to be the most efficient for the photochemical reaction of riboflavin in visible region. The quality of the blue light in fluorescent lamps is critical to the photo-decomposition of riboflavin. A blue light is better than a fluorescent lamp for the photo-decomposition of riboflavin. The performance of the B2/NBT method is thereby optimized.
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Affiliation(s)
- Chien-Wei Cheng
- Department of Biotechnology, Ming-Chuan University, Gui-Shan 33343, Taiwan
| | - Liang-Yü Chen
- Department of Biotechnology, Ming-Chuan University, Gui-Shan 33343, Taiwan
| | - Chan-Wei Chou
- Department of Biotechnology, Ming-Chuan University, Gui-Shan 33343, Taiwan
| | - Ji-Yuan Liang
- Department of Biotechnology, Ming-Chuan University, Gui-Shan 33343, Taiwan.
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