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Khedr TM, El-Sheikh SM, Kowalska E. Bismuth Tungstate Nanoplates-Vis Responsive Photocatalyst for Water Oxidation. Nanomaterials (Basel) 2023; 13:2438. [PMID: 37686946 PMCID: PMC10490350 DOI: 10.3390/nano13172438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 08/21/2023] [Accepted: 08/25/2023] [Indexed: 09/10/2023]
Abstract
The development of visible-light-responsive (VLR) semiconductor materials for effective water oxidation is significant for a sustainable and better future. Among various candidates, bismuth tungstate (Bi2WO6; BWO) has attracted extensive attention because of many advantages, including efficient light-absorption ability, appropriate redox properties (for O2 generation), adjustable morphology, low cost, and profitable chemical and optical characteristics. Accordingly, a facile solvothermal method has been proposed in this study to synthesize two-dimensional (2D) BWO nanoplates after considering the optimal preparation conditions (solvothermal reaction time: 10-40 h). To find the key factors of photocatalytic performance, various methods and techniques were used for samples' characterization, including XRD, FE-SEM, STEM, TEM, HRTEM, BET-specific surface area measurements, UV/vis DRS, and PL spectroscopy, and photocatalytic activity was examined for water oxidation under UV and/or visible-light (vis) irradiation. Famous commercial photocatalyst-P25 was used as a reference sample. It was found that BWO crystals grew anisotropically along the {001} basal plane to form nanoplates, and all properties were controlled simultaneously by tuning the synthesis time. Interestingly, the most active sample (under both UV and vis), prepared during the 30 h solvothermal reaction at 433 K (BWO-30), was characterized by the smallest specific surface area and the largest crystals. Accordingly, it is proposed that improved crystallinity (which hindered charge carriers' recombination, as confirmed by PL), efficient photoabsorption (using the smallest bandgap), and 2D mesoporous structure are responsible for the best photocatalytic performance of the BWO-30 sample. This report shows for the first time that 2D mesoporous BWO nanoplates might be successfully prepared through a facile template-free solvothermal approach. All the above-mentioned advantages suggest that nanostructured BWO is a prospective candidate for photocatalytic applications under natural solar irradiation.
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Affiliation(s)
- Tamer M Khedr
- Institute for Catalysis, Hokkaido University, N21, W10, Sapporo 001-0021, Japan
- Nanomaterials and Nanotechnology Department, Central Metallurgical Research and Development Institute (CMRDI), P.O. Box 87 Helwan, Cairo 11421, Egypt
| | - Said M El-Sheikh
- Nanomaterials and Nanotechnology Department, Central Metallurgical Research and Development Institute (CMRDI), P.O. Box 87 Helwan, Cairo 11421, Egypt
| | - Ewa Kowalska
- Institute for Catalysis, Hokkaido University, N21, W10, Sapporo 001-0021, Japan
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
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Ye H, Ma Z, Liu L, Zhang T, Han Q, Xiang Z, Xia Y, Ke Y, Guan X, Shi Q, Ataullakhanov FI, Panteleev M. Thrombus Inhibition and Neuroprotection for Ischemic Stroke Treatment through Platelet Regulation and ROS Scavenging. ChemMedChem 2022; 17:e202200317. [PMID: 36220787 DOI: 10.1002/cmdc.202200317] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/09/2022] [Indexed: 01/14/2023]
Abstract
Ischemic stroke is caused by cerebrovascular stenosis or occlusion. Excessive reactive oxygen species (ROS) are the focus-triggering factor of irreversible injury in ischemic regions, which result in harmful cascading effects to brain tissue, such as inflammation and microthrombus formation. In the present work, we designed nanodelivery systems (NDSs) based on MnO2 loaded with Ginkgolide B (GB) for restoring the intracerebral microenvironment in ischemic stroke, such as ROS scavenging, O2 elevation, thrombus inhibition and damage repair. GB can activate the endogenous antioxidant defense of cells by enhancing the nuclear factor-E2-related factor 2 (Nrf2) signalling pathway, thus protecting brain tissue from oxidative damage. However, the blood-brain barrier (BBB) is also a therapeutic obstacle for the delivery of these agents to ischemic regions. MnO2 nanoparticles have an inherent BBB penetration effect, which enhances the delivery of therapeutic agents within brain tissue. MnO2 , with mimicking enzymatic activity, can catalyze the decomposition of overproduced H2 O2 in the ischemic microenvironment to O2 , meanwhile releasing platelet-antagonizing GB molecules, thus alleviating cerebral hypoxia, oxidative stress damage, and microthrombus generation. This study may provide a promising therapeutic route for regulating the microenvironment of ischemic stroke through a combined function of ROS scavenging, microthrombus inhibition, and BBB penetration.
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Affiliation(s)
- Hongbo Ye
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China
| | - Zhifang Ma
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China
| | - Lei Liu
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China.,University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Tianci Zhang
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China.,University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Qiaoyi Han
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China.,University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Zehong Xiang
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China.,University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Yu Xia
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China.,University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Yue Ke
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China.,University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Xinghua Guan
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China
| | - Qiang Shi
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China.,University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China.,Key Laboratory of Polymeric Materials Design and Synthesis for Biomedical Function, Soochow University, Suzhou, Jiangsu, 215123, P. R. China
| | - Fazly I Ataullakhanov
- Dmitry Rogachev National Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, 117198, Russia.,Faculty of Physics, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Mikhail Panteleev
- Dmitry Rogachev National Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, 117198, Russia
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Li C, Zhao Z, Luo Y, Ning T, Liu P, Chen Q, Chu Y, Guo Q, Zhang Y, Zhou W, Chen H, Zhou Z, Wang Y, Su B, You H, Zhang T, Li X, Song H, Li C, Sun T, Jiang C. Macrophage-Disguised Manganese Dioxide Nanoparticles for Neuroprotection by Reducing Oxidative Stress and Modulating Inflammatory Microenvironment in Acute Ischemic Stroke. Adv Sci (Weinh) 2021; 8:e2101526. [PMID: 34436822 PMCID: PMC8529435 DOI: 10.1002/advs.202101526] [Citation(s) in RCA: 93] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 07/14/2021] [Indexed: 05/06/2023]
Abstract
Reperfusion injury is still a major challenge that impedes neuronal survival in ischemic stroke. However, the current clinical treatments are remained on single pathological process, which are due to lack of comprehensive neuroprotective effects. Herein, a macrophage-disguised honeycomb manganese dioxide (MnO2 ) nanosphere loaded with fingolimod (FTY) is developed to salvage the ischemic penumbra. In particular, the biomimetic nanoparticles can accumulate actively in the damaged brain via macrophage-membrane protein-mediated recognition with cell adhesion molecules that are overexpressed on the damaged vascular endothelium. MnO2 nanosphere can consume excess hydrogen peroxide (H2 O2 ) and convert it into desiderated oxygen (O2 ), and can be decomposed in acidic lysosome for cargo release, so as to reduce oxidative stress and promote the transition of M1 microglia to M2 type, eventually reversing the proinflammatory microenvironment and reinforcing the survival of damaged neuron. This biomimetic nanomedicine raises new strategy for multitargeted combined treatment of ischemic stroke.
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Affiliation(s)
- Chao Li
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain ScienceInstitutes of Brain ScienceDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai201203China
| | - Zhenhao Zhao
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain ScienceInstitutes of Brain ScienceDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai201203China
| | - Yifan Luo
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain ScienceInstitutes of Brain ScienceDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai201203China
| | - Tingting Ning
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain ScienceInstitutes of Brain ScienceDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai201203China
| | - Peixin Liu
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain ScienceInstitutes of Brain ScienceDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai201203China
| | - Qinjun Chen
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain ScienceInstitutes of Brain ScienceDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai201203China
| | - Yongchao Chu
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain ScienceInstitutes of Brain ScienceDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai201203China
| | - Qin Guo
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain ScienceInstitutes of Brain ScienceDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai201203China
| | - Yiwen Zhang
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain ScienceInstitutes of Brain ScienceDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai201203China
| | - Wenxi Zhou
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain ScienceInstitutes of Brain ScienceDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai201203China
| | - Hongyi Chen
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain ScienceInstitutes of Brain ScienceDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai201203China
| | - Zheng Zhou
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain ScienceInstitutes of Brain ScienceDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai201203China
| | - Yu Wang
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain ScienceInstitutes of Brain ScienceDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai201203China
| | - Boyu Su
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain ScienceInstitutes of Brain ScienceDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai201203China
| | - Haoyu You
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain ScienceInstitutes of Brain ScienceDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai201203China
| | - Tongyu Zhang
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain ScienceInstitutes of Brain ScienceDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai201203China
| | - Xuwen Li
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain ScienceInstitutes of Brain ScienceDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai201203China
| | - Haolin Song
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain ScienceInstitutes of Brain ScienceDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai201203China
| | - Chufeng Li
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain ScienceInstitutes of Brain ScienceDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai201203China
| | - Tao Sun
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain ScienceInstitutes of Brain ScienceDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai201203China
| | - Chen Jiang
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain ScienceInstitutes of Brain ScienceDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai201203China
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Yin Z, Ji Q, Wu D, Li Z, Fan M, Zhang H, Zhao X, Wu A, Cheng L, Zeng L. H 2O 2-Responsive Gold Nanoclusters @ Mesoporous Silica @ Manganese Dioxide Nanozyme for "Off/On" Modulation and Enhancement of Magnetic Resonance Imaging and Photodynamic Therapy. ACS Appl Mater Interfaces 2021; 13:14928-14937. [PMID: 33759491 DOI: 10.1021/acsami.1c00430] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
In order to achieve safe and high-efficient photodynamic therapy (PDT), it was a powerful strategy of constructing O2-generated nanozyme with intelligent "off/on" modulation and enhancement. Herein, a kind of H2O2-responsive nanozyme was developed for off/on modulation and enhancement of magnetic resonance (MR) imaging and PDT, in which great amounts of gold nanoclusters (AuNCs) were loaded into mesoporous silica to form nanoassembly, and manganese dioxide (MnO2) nanosheets were wrapped as switching shield shell (AuNCs@mSiO2@MnO2). In a neutral physiological environment, stable MnO2 shells eliminated singlet oxygen (1O2) generation to switch off PDT and MR imaging. However, in an acidic tumor microenvironment, the MnO2 shell reacted with H2O2, in which MnO2 degradation switched on MR imaging and PDT, and the generated O2 further enhanced PDT. H2O2-responsive MnO2 degradation brought about excellent MR imaging with a longitudinal relaxation rate of 25.31 mM-1 s-1, and simultaneously sufficient O2 generation guaranteed a 74% high 1O2 yield. Under the irradiation of a 635 nm laser, the viability of MDA-MB-435 cells was reduced to 4%, and the tumors completely disappeared, demonstrating strong PDT performance. Therefore, H2O2-responsive AuNCs@mSiO2@MnO2 nanozyme showed excellent off/on modulation and enhancement of MR imaging and PDT and was a promising intelligent nanoprobe for safe and high-efficiency theranostics.
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Affiliation(s)
- Zhibin Yin
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Institute of Life Science and Green Development, Chemical Biology Key Laboratory of Hebei Province, College of Chemistry & Environmental Science, Hebei University, Baoding 071002, P.R. China
| | - Qian Ji
- Department of Radiology, Tianjin First Central Hospital, Tianjin 300192, P.R. China
| | - Di Wu
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Institute of Life Science and Green Development, Chemical Biology Key Laboratory of Hebei Province, College of Chemistry & Environmental Science, Hebei University, Baoding 071002, P.R. China
| | - Ziwei Li
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Institute of Life Science and Green Development, Chemical Biology Key Laboratory of Hebei Province, College of Chemistry & Environmental Science, Hebei University, Baoding 071002, P.R. China
| | - Minfei Fan
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Institute of Life Science and Green Development, Chemical Biology Key Laboratory of Hebei Province, College of Chemistry & Environmental Science, Hebei University, Baoding 071002, P.R. China
| | - Hongxin Zhang
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Institute of Life Science and Green Development, Chemical Biology Key Laboratory of Hebei Province, College of Chemistry & Environmental Science, Hebei University, Baoding 071002, P.R. China
| | - Xiaolong Zhao
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Institute of Life Science and Green Development, Chemical Biology Key Laboratory of Hebei Province, College of Chemistry & Environmental Science, Hebei University, Baoding 071002, P.R. China
| | - Aiguo Wu
- Cixi Institute of Biomedical Engineering, CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, P.R. China
| | - Liang Cheng
- Institute of Functional Nano & Soft Materials, Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, P.R. China
| | - Leyong Zeng
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Institute of Life Science and Green Development, Chemical Biology Key Laboratory of Hebei Province, College of Chemistry & Environmental Science, Hebei University, Baoding 071002, P.R. China
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