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Tsai YH, Milbrandt NB, Prado RC, Ponce NB, Alam MM, Qiu SR, Yu X, Burda C, Kim TKJ, Samia ACS. Effect of Nitrogen Doping on the Photocatalytic Properties and Antibiofilm Efficacy of Reduced TiO 2 Nanoparticles. ACS APPLIED BIO MATERIALS 2024; 7:4580-4592. [PMID: 38958462 DOI: 10.1021/acsabm.4c00459] [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: 07/04/2024]
Abstract
Nanomaterial-mediated antibacterial photodynamic therapy (aPDT) emerges as a promising treatment against antibiotic-resistant bacterial biofilms. Specifically, titanium dioxide nanoparticles (TiO2 NPs) are being investigated as photosensitizers in aPDT to address biofilm related diseases. To enhance their photocatalytic performance in the visible spectral range for biomedical applications, various strategies have been adopted, including reduction of TiO2 NPs. However, despite improvements in visible-light photoactivity, reduced TiO2 NPs have yet to reach their expected performance primarily due to the instability of oxygen vacancies and their tendency to reoxidize easily. To address this, we present a two-step approach to fabricate highly visible-light active and stable TiO2 NP photocatalysts, involving nitrogen doping followed by a magnesium-assisted reductive annealing process. X-ray photoelectron spectroscopy analysis of the synthesized reduced nitrogen-doped TiO2 NPs (H:Mg-N-TiO2 NPs) reveals that the presence of nitrogen stabilizes oxygen vacancies and reduced Ti species, leading to increased production of reactive oxygen species under visible-light excitation. The improved aPDT efficiency translates to a 3-fold enhancement in the antibiofilm activity of nitrogen-doped compared to undoped reduced TiO2 NPs against both Gram-positive (Streptococcus mutans) and Gram-negative (Porphyromonas gingivalis, Fusobacterium nucleatum) oral pathogens. These results underscore the potential of H:Mg-N-TiO2 NPs in aPDT for combating bacterial biofilms effectively.
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Affiliation(s)
- Yu Hsin Tsai
- Department of Chemistry, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, United States
| | - Nathalie B Milbrandt
- Department of Chemistry, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, United States
| | - Ross Clark Prado
- Department of Chemistry, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, United States
| | - Nicole Beatrice Ponce
- Department of Chemistry, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, United States
| | - Md Masud Alam
- Department of Chemistry, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, United States
| | - S Roger Qiu
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratyory, Livermore, California 94551, United States
| | - Xiong Yu
- Department of Civil and Environmental Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, United States
| | - Clemens Burda
- Department of Chemistry, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, United States
| | - Tae Kyong John Kim
- Swagelok Center for Surface Analysis of Materials, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, United States
| | - Anna Cristina S Samia
- Department of Chemistry, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, United States
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Cheng X, Gao J, Ding Y, Lu Y, Wei Q, Cui D, Fan J, Li X, Zhu E, Lu Y, Wu Q, Li L, Huang W. Multi-Functional Liposome: A Powerful Theranostic Nano-Platform Enhancing Photodynamic Therapy. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2100876. [PMID: 34085415 PMCID: PMC8373168 DOI: 10.1002/advs.202100876] [Citation(s) in RCA: 80] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 04/11/2021] [Indexed: 05/05/2023]
Abstract
Although photodynamic therapy (PDT) has promising advantages in almost non-invasion, low drug resistance, and low dark toxicity, it still suffers from limitations in the lipophilic nature of most photosensitizers (PSs), short half-life of PS in plasma, poor tissue penetration, and low tumor specificity. To overcome these limitations and enhance PDT, liposomes, as excellent multi-functional nano-carriers for drug delivery, have been extensively studied in multi-functional theranostics, including liposomal PS, targeted drug delivery, controllable drug release, image-guided therapy, and combined therapy. This review provides researchers with a useful reference in liposome-based drug delivery.
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Affiliation(s)
- Xiamin Cheng
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University (NanjingTech)Nanjing211816P. R. China
| | - Jing Gao
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University (NanjingTech)Nanjing211816P. R. China
| | - Yang Ding
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)Nanjing Tech University (NanjingTech)Nanjing211816P. R. China
| | - Yao Lu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)Nanjing Tech University (NanjingTech)Nanjing211816P. R. China
| | - Qiancheng Wei
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University (NanjingTech)Nanjing211816P. R. China
| | - Dezhi Cui
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University (NanjingTech)Nanjing211816P. R. China
| | - Jiali Fan
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University (NanjingTech)Nanjing211816P. R. China
| | - Xiaoman Li
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University (NanjingTech)Nanjing211816P. R. China
| | - Ershu Zhu
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University (NanjingTech)Nanjing211816P. R. China
| | - Yongna Lu
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University (NanjingTech)Nanjing211816P. R. China
| | - Qiong Wu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)Nanjing Tech University (NanjingTech)Nanjing211816P. R. China
| | - Lin Li
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)Nanjing Tech University (NanjingTech)Nanjing211816P. R. China
| | - Wei Huang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)Nanjing Tech University (NanjingTech)Nanjing211816P. R. China
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Yang C, Wang X, Ma W, Wang Z, Tan G, Fang W, Jin Y. Improving the photodynamic therapy of pyropheophorbide a through the combination of hypoxia-sensitive molecule and infrared light-excited d-TiO2−X nanoparticles. J PORPHYR PHTHALOCYA 2021. [DOI: 10.1142/s1088424621500784] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Photodynamic therapy (PDT) involving the generation of cytotoxic reactive oxygen species under light in the presence of sufficient oxygen has been widely used in diagnosing and treating cancer. However, the ubiquitous hypoxia in many solid tumors due to their abnormal proliferation and vascularization has greatly compromised the therapeutic effect. We have designed and prepared a tumor therapeutic nanoplatform for improving PDT based on defective TiO[Formula: see text] (d-TiO[Formula: see text] with the consideration that the continuous PDT would cause hypoxic tumor microenvironment (HTM) in which many hypoxia-sensitive drugs might be activated to exert the antitumor activities. The inorganic d-TiO[Formula: see text] nanoparticles (NPs) were firstly prepared and then modified by APTES to obtain the mesoporous d-TiO[Formula: see text]@SiO2NPs. The organic photosensitizer pyropheophorbide-a (PPa) and hypoxic-sensitive agent 6-aminoflavone (AF) were then adsorbed in the mesoporous SiO2, followed by further hydrophilic PEGylation to improve the biocompatibility. Defective d-TiO[Formula: see text] and the PPa could simultaneously consume oxygen after light excitation, while the resulted HTM was utilized to activate the hypoxic-sensitive agent 6-aminoflavone (AF) to trigger anti-cancer effect. The prepared d-TiO[Formula: see text]@SiO2/PPa/AF@PEG NPs were stable in normal physiological environment, and could continuously release PPa and AF under slightly acidic conditions. The in vitro experiments against cancer cells suggested that the combination of PPa and AF displayed significantly enhanced antitumor activities than that of monotherapy. Therefore, this research offered a potential application for 6-aminoflavone in PDT-induced hypoxia to improve the antitumor effects.
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Affiliation(s)
- Chen Yang
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, College of Chemistry & Chemical Engineering, Harbin Normal University, Harbin, 150025, P. R. China
| | - Xingchao Wang
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, College of Chemistry & Chemical Engineering, Harbin Normal University, Harbin, 150025, P. R. China
| | - Wei Ma
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, College of Chemistry & Chemical Engineering, Harbin Normal University, Harbin, 150025, P. R. China
| | - Zhiqiang Wang
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, College of Chemistry & Chemical Engineering, Harbin Normal University, Harbin, 150025, P. R. China
| | - Guanghui Tan
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, College of Chemistry & Chemical Engineering, Harbin Normal University, Harbin, 150025, P. R. China
| | - Wen Fang
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, College of Chemistry & Chemical Engineering, Harbin Normal University, Harbin, 150025, P. R. China
| | - Yingxue Jin
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, College of Chemistry & Chemical Engineering, Harbin Normal University, Harbin, 150025, P. R. China
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Xiang H, Chen Y. Energy-Converting Nanomedicine. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1805339. [PMID: 30773837 DOI: 10.1002/smll.201805339] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Revised: 01/22/2019] [Indexed: 05/12/2023]
Abstract
Serious side effects to surrounding normal tissues and unsatisfactory therapeutic efficacy hamper the further clinic applications of conventional cancer-therapeutic strategies, such as chemotherapy and surgery. The fast development of nanotechnology provides unprecedented superiorities for cancer therapeutics. Externally activatable therapeutic modalities mediated by nanomaterials, relying on highly effective energy transformation to release therapeutic elements/effects (cytotoxic reactive oxygen species, thermal effect, photoelectric effect, Compton effect, cavitation effect, mechanical effect or chemotherapeutic drug) for cancer therapies, categorized and termed as "energy-converting nanomedicine," have arouse considerable concern due to their noninvasiveness, desirable tissue-penetration depth, and accurate modulation of therapeutic dose. This review summarizes the recent advances in the engineering of intelligent functional nanotherapeutics for energy-converting nanomedicine, including photo-based, radiation-based, ultrasound-based, magnetic field-based, microwave-based, electric field-based, and radiofrequency-based nanomedicines, which are enabled by external stimuli (light, radiation, ultrasound, magnetic field, microwave, electric field, and radiofrequency). Furthermore, biosafety issues of energy-converting nanomedicine related to future clinical translation are also addressed. Finally, the potential challenges and prospects of energy-converting nanomedicine for future clinical translation are discussed.
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Affiliation(s)
- Huijing Xiang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
| | - Yu Chen
- State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
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Lee J, Lee YH, Jeong CB, Choi JS, Chang KS, Yoon M. Gold nanorods-conjugated TiO 2 nanoclusters for the synergistic combination of phototherapeutic treatments of cancer cells. J Nanobiotechnology 2018; 16:104. [PMID: 30572896 PMCID: PMC6300922 DOI: 10.1186/s12951-018-0432-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 12/10/2018] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Recently, a combination of photodynamic therapy (PDT) and photothermal therapy (PTT) to generate reactive oxygen species (ROS) and heat to kill cancer cells, respectively has attracted considerable attention because it gives synergistic effects on the cancer treatment by utilizing the radiation of nontoxic low-energy photons such as long wavelength visible light and near IR (NIR) penetrating into subcutaneous region. For the effective combination of the phototherapies, various organic photosensitizer-conjugated gold nanocomplexes have been developed, but they have still some disadvantages due to photobleaching and unnecessary energy transfer of the organic photosensitizers. RESULTS In this study, we fabricated novel inorganic phototherapeutic nanocomplexes (Au NR-TiO2 NCs) by conjugating gold nanorods (Au NRs) with defective TiO2 nanoparticle clusters (d-TiO2 NP clusters) and characterized their optical and photothermal properties. They were observed to absorb a broad range of visible light and near IR (NIR) from 500 to 1000 nm, exhibiting the generation of ROS as well as the photothermal effect for the simultaneous application of PDT and PTT. The resultant combination of PDT and PTT treatments of HeLa cells incubated with the nanocomplexes caused a synergistic increase in the cell death compared to the single treatment. CONCLUSION The higher efficacy of cell death by the combination of PDT and PTT treatments with the nanocomplexes is likely attributed to the increases of ROS generation from the TiO2 NCs with the aid of local surface plasma resonance (LSPR)-induced hot electrons and heat generation from Au NRs, suggesting that Au NR-TiO2 NCs are promising nanomaterials for the in vivo combinatorial phototherapy of cancer.
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Affiliation(s)
- Jooran Lee
- Division of Scientific Instrumentation, Korea Basic Science Institute, Daejeon, 34133, Republic of Korea
- Medical Device Development Center, Osong Medical Innovation Foundation, Cheongju, Chungbuk, 28160, Republic of Korea
| | - Young Hwa Lee
- Department of Biochemistry, College of Natural Sciences, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Chan Bae Jeong
- Division of Scientific Instrumentation, Korea Basic Science Institute, Daejeon, 34133, Republic of Korea
| | - Joon Sig Choi
- Department of Biochemistry, College of Natural Sciences, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Ki Soo Chang
- Division of Scientific Instrumentation, Korea Basic Science Institute, Daejeon, 34133, Republic of Korea.
| | - Minjoong Yoon
- Department of Chemistry, College of Natural Sciences, Chungnam National University, Daejeon, 34134, Republic of Korea.
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Stolzenburg P, Hämisch B, Richter S, Huber K, Garnweitner G. Secondary Particle Formation during the Nonaqueous Synthesis of Metal Oxide Nanocrystals. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:12834-12844. [PMID: 30272453 DOI: 10.1021/acs.langmuir.8b00020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
This study aims to elucidate the aggregation and agglomeration behavior of TiO2 and ZrO2 nanoparticles during the nonaqueous synthesis. We found that zirconia nanoparticles immediately form spherical-like aggregates after nucleation with a homogeneous size of 200 nm, which can be related to the metastable state of the nuclei and the reduction of surface free energy. These aggregates further agglomerate, following a diffusion-limited colloid agglomeration mechanism that is additionally supported by the high fractal dimension of the resulting agglomerates. In contrast, TiO2 nanoparticles randomly orient and follow a reaction-limited colloid agglomeration mechanism that leads to a dense network of particles throughout the entire reaction volume. We performed in situ laser light transmission measurements and showed that particle formation starts earlier than previously reported. A complex population balance equation model was developed that is able to simulate particle aggregation as well as agglomeration, which eventually allowed us to distinguish between both phenomena. Hence, we were able to investigate the respective agglomeration kinetics with great agreement to our experimental data.
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Affiliation(s)
- Pierre Stolzenburg
- Institute for Particle Technology and Laboratory for Emerging Nanometrology , Technische Universität Braunschweig , Volkmaroder Str. 5 , 38104 Braunschweig , Germany
| | - Benjamin Hämisch
- Physical Chemistry , Universität Paderborn , Warburger Str. 100 , 33098 Paderborn , Germany
| | - Sebastian Richter
- Institute for Particle Technology and Laboratory for Emerging Nanometrology , Technische Universität Braunschweig , Volkmaroder Str. 5 , 38104 Braunschweig , Germany
| | - Klaus Huber
- Physical Chemistry , Universität Paderborn , Warburger Str. 100 , 33098 Paderborn , Germany
| | - Georg Garnweitner
- Institute for Particle Technology and Laboratory for Emerging Nanometrology , Technische Universität Braunschweig , Volkmaroder Str. 5 , 38104 Braunschweig , Germany
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Malekkhaiat Häffner S, Malmsten M. Membrane interactions and antimicrobial effects of inorganic nanoparticles. Adv Colloid Interface Sci 2017; 248:105-128. [PMID: 28807368 DOI: 10.1016/j.cis.2017.07.029] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 07/20/2017] [Accepted: 07/25/2017] [Indexed: 12/19/2022]
Abstract
Interactions between nanoparticles and biological membranes are attracting increasing attention in current nanomedicine, and play a key role both for nanotoxicology and for utilizing nanomaterials in diagnostics, drug delivery, functional biomaterials, as well as combinations of these, e.g., in theranostics. In addition, there is considerable current interest in the use of nanomaterials as antimicrobial agents, motivated by increasing resistance development against conventional antibiotics. Here, various nanomaterials offer opportunities for triggered functionalites to combat challenging infections. Although the performance in these diverse applications is governed by a complex interplay between the nanomaterial, the properties of included drugs (if any), and the biological system, nanoparticle-membrane interactions constitute a key initial step and play a key role for the subsequent biological response. In the present overview, the current understanding of inorganic nanomaterials as antimicrobial agents is outlined, with special focus on the interplay between antimicrobial effects and membrane interactions, and how membrane interactions and antimicrobial effects of such materials depend on nanoparticle properties, membrane composition, and external (e.g., light and magnetic) fields.
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Affiliation(s)
| | - Martin Malmsten
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark; Department of Pharmacy, Uppsala University, P.O. Box 580, SE-751 23 Uppsala, Sweden.
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Chuah XF, Lee KT, Cheng YC, Lee PF, Lu SY. Ag/AgFeO 2: An Outstanding Magnetically Responsive Photocatalyst for HeLa Cell Eradication. ACS OMEGA 2017; 2:4261-4268. [PMID: 30023720 PMCID: PMC6044504 DOI: 10.1021/acsomega.7b00698] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Accepted: 07/27/2017] [Indexed: 05/23/2023]
Abstract
A superfast, room-temperature, one-step carrier-solvent-assisted interfacial reaction process was developed to prepare Ag/AgFeO2 composite nanocrystals (NCs) of less than 10 nm in size within a 1 min reaction time. These composite NCs were with a direct energy band gap of 2.0 eV and were paramagnetic, making them suitable for optical activation and magnetic manipulation. These composite NCs, applied as a photocatalyst for the treatment of HeLa cells, achieved a significant reduction of 74% in cell viability within 30 min. These Ag/AgFeO2 composite NCs proved to be a promising magnetically guidable photocatalyst for cancer cell treatment.
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Affiliation(s)
- Xui-Fang Chuah
- Department
of Chemical Engineering, National Tsing
Hua University, Hsinchu 30013, Taiwan (ROC)
- Department of Mechatronics and Biomedical Engineering and Department of Chemical
Engineering, Universiti Tunku Abdul Rahman, Kajang 43000, Selangor, Malaysia
| | - Kuan-Ting Lee
- Department
of Chemical Engineering, National Tsing
Hua University, Hsinchu 30013, Taiwan (ROC)
| | - Yu-Chieh Cheng
- Department
of Chemical Engineering, National Tsing
Hua University, Hsinchu 30013, Taiwan (ROC)
| | - Poh-Foong Lee
- Department of Mechatronics and Biomedical Engineering and Department of Chemical
Engineering, Universiti Tunku Abdul Rahman, Kajang 43000, Selangor, Malaysia
| | - Shih-Yuan Lu
- Department
of Chemical Engineering, National Tsing
Hua University, Hsinchu 30013, Taiwan (ROC)
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