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Huang X, Liang R, Zhang Y, Fan J, Hao W. Matrix-type bismuth-modulated copper-sulfur electrode using local photothermal effect strategy for efficient seawater splitting. J Colloid Interface Sci 2024; 660:823-833. [PMID: 38277839 DOI: 10.1016/j.jcis.2024.01.074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 01/09/2024] [Accepted: 01/11/2024] [Indexed: 01/28/2024]
Abstract
Constructing catalytic electrodes with green economy, stability, and high efficiency is crucial for achieving overall economic water splitting. Herein, a matrix-type bismuth-modulated nickel-boron electrodes loaded on sulfurized copper foils (Bi-NiBx@CFS) is synthesized via in situ mild electroless plating. This electrode features a 2-dimensional (2D) matrix-type nanosheet structure with uniform, large pores, providing more active sites and ensuring a high gas transmission rate. Notably, the crystalline-amorphous structure constituted by the photothermal materials Bi and NiBx is loaded onto sulfide-based heterostructures. This enhances the catalytic activity through the "local photothermal effect" strategy. A performance enhancement of approximately 10 % is achieved for the Bi-NiBx@CFS at a current density of 10 mA cm-2 using this strategy at 298 K. This enhancement is equivalent to increasing the temperature of conventional electrolyte solutions by 321 K. In addition, the overpotential required to catalytically drive seawater splitting at the same current density is only 1.486 V. The Bi-NiBx@CFS electrode operates stably for 200 h without any performance degradation at industrial-grade current densities. The Bi-NiBx@CFS electrode under the "localized photothermal effect" strategy is expected to be a new type of electrocatalyst for overall seawater splitting.
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Affiliation(s)
- Xinke Huang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Rikai Liang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Yifan Zhang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Jinchen Fan
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Weiju Hao
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China.
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2
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Zhang H, Mao Y, Nie Z, Li Q, Wang M, Cai C, Hao W, Shen X, Gu N, Shen W, Song H. Iron Oxide Nanoparticles Engineered Macrophage-Derived Exosomes for Targeted Pathological Angiogenesis Therapy. ACS Nano 2024; 18:7644-7655. [PMID: 38412252 PMCID: PMC10938920 DOI: 10.1021/acsnano.4c00699] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 02/16/2024] [Accepted: 02/23/2024] [Indexed: 02/29/2024]
Abstract
Engineering exosomes with nanomaterials usually leads to the damage of exosomal membrane and bioactive molecules. Here, pathological angiogenesis targeting exosomes with magnetic imaging, ferroptosis inducing, and immunotherapeutic properties is fabricated using a simple coincubation method with macrophages being the bioreactor. Extremely small iron oxide nanoparticle (ESIONPs) incorporated exosomes (ESIONPs@EXO) are acquired by sorting the secreted exosomes from M1-polarized macrophages induced by ESIONPs. ESIONPs@EXO suppress pathological angiogenesis in vitro and in vivo without toxicity. Furthermore, ESIONPs@EXO target pathological angiogenesis and exhibit an excellent T1-weighted contrast property for magnetic resonance imaging. Mechanistically, ESIONPs@EXO induce ferroptosis and exhibit immunotherapeutic ability toward pathological angiogenesis. These findings demonstrate that a pure biological method engineered ESIONPs@EXO using macrophages shows potential for targeted pathological angiogenesis therapy.
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Affiliation(s)
- Haorui Zhang
- Department
of Ophthalmology, Shanghai Changhai Hospital, Shanghai 200433, P.R. China
| | - Yu Mao
- Nanjing
Key Laboratory for Cardiovascular Information and Health Engineering
Medicine, Institute of Clinical Medicine, Nanjing Drum Tower Hospital,
Medical School, Nanjing University, Nanjing 210093, P.R. China
| | - Zheng Nie
- Department
of Ophthalmology, Shanghai Changhai Hospital, Shanghai 200433, P.R. China
| | - Qing Li
- Department
of Ophthalmology, Shanghai Changhai Hospital, Shanghai 200433, P.R. China
| | - Mengzhu Wang
- Department
of Ophthalmology, Shanghai Changhai Hospital, Shanghai 200433, P.R. China
| | - Chang Cai
- Department
of Ophthalmology, Shanghai Changhai Hospital, Shanghai 200433, P.R. China
| | - Weiju Hao
- University
of Shanghai for Science and Technology, Shanghai 200093, P.R. China
| | - Xi Shen
- Department
of Ophthalmology, Ruijin Hospital, Shanghai
Jiao Tong University School of Medicine, Shanghai 200020, P.R. China
| | - Ning Gu
- Nanjing
Key Laboratory for Cardiovascular Information and Health Engineering
Medicine, Institute of Clinical Medicine, Nanjing Drum Tower Hospital,
Medical School, Nanjing University, Nanjing 210093, P.R. China
| | - Wei Shen
- Department
of Ophthalmology, Shanghai Changhai Hospital, Shanghai 200433, P.R. China
| | - Hongyuan Song
- Department
of Ophthalmology, Shanghai Changhai Hospital, Shanghai 200433, P.R. China
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3
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Fan J, Ma X, Xia J, Zhang L, Bi Q, Hao W. Corrosion resistance and earth-abundance FeS-based heterojunction catalyst for seawater splitting at industrial grade density. J Colloid Interface Sci 2024; 657:393-401. [PMID: 38056044 DOI: 10.1016/j.jcis.2023.12.001] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 11/28/2023] [Accepted: 12/01/2023] [Indexed: 12/08/2023]
Abstract
The strategic progression toward highly efficient transition metal electrocatalytic electrodes is crucial to achieving efficiency and long-term stability in hydrogen production from authentic seawater sources. This work reports the development of a self-supporting, heterogeneous and corrosion-resistant iron sulfur-based catalytic electrode via a streamlined, one-step process involving sulfide etching and electroless plating on an iron foam substrate (IF). This new electrode, named NiS-FeS@IF, involves a nanostructured NiS-FeS catalytic material that combines in situ, resulting in a thin, ultrathin nanospherical layer on the IF. This construction has low overpotentials of merely 322 mV for the hydrogen evolution reaction (HER) and 563 mV for the oxygen evolution reaction (OER) with a current density of 500 mA cm-2 in alkaline simulated seawater electrolytes. Importantly, the NiS-FeS@IF electrode enduring more than 500 h at an industrial grade high current density of 1 A cm-2 without noteworthy performance deterioration. The unique and uniformly dispersed morphology of NiS-FeS facilitates intensified interfacial electron transfer, optimizes active site exposure and provides efficient channels for the rapid release and mass transfer of gas bubbles. This work introduces a novel approach for the facile preparation of efficient electrode materials.
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Affiliation(s)
- Jinchen Fan
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Xunwei Ma
- School of Resource and Environmental Engineering, Shanghai Polytechnic University, Shanghai 201209, PR China
| | - Jiajing Xia
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Lujia Zhang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Qingyuan Bi
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China.
| | - Weiju Hao
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China.
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Tao Y, Jiang W, Wang H, Hao W, Bi Q, Liu X, Fan J, Li G. Tuning electronic structure of hedgehog-like nickel cobaltite via molybdenum-doping for enhanced electrocatalytic oxygen evolution catalysis. J Colloid Interface Sci 2024; 657:921-930. [PMID: 38091915 DOI: 10.1016/j.jcis.2023.12.048] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 12/05/2023] [Accepted: 12/08/2023] [Indexed: 01/02/2024]
Abstract
As a typical spinel oxide, nickel cobaltite (NiCo2O4) is considered to be a promising and reliable oxygen evolution reaction (OER) catalyst due to its abundant oxidation states and the synergistic effect of multiple metal species. However, the electrocatalytic OER performance of NiCo2O4 has always been limited by the low specific surface area and poor intrinsic conductivity of spinels. Herein, the hedgehog-like molybdenum-doped NiCo2O4 (Mo-NiCo2O4) catalyst was prepared as an efficient OER electrocatalyst via a facile hydrothermal method followed with high-temperature annealing. The Mo-NiCo2O4-0.075 with Mo doping concentration of ∼ 1.95 wt% exhibits excellent OER performance with a low overpotential of 265 mV at a current density of 10 mA·cm-2and a Tafel slope of 126.63 mV·dec-1, as well as excellent cyclingstability.The results demonstrated that the hedgehog-like structure provides Mo-NiCo2O4 with the high surface area and mesopores that enhance electrolyte diffusion and optimal active site exposure. The in-situ Raman spectra and density functional theory calculations show that the Mo cations doping improve the intrinsic conductivity of the NiCo2O4 while modulating the chemisorption of intermediates. Meanwhile, the energy barriers of *OH and O* formation decrease significantly after Mo doping, effectively facilitating water dissociation and optimizing the reaction kinetics.
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Affiliation(s)
- Yinghao Tao
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Wendan Jiang
- New Energy Research Institute, School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou, Guangdong 510006 PR China
| | - Hui Wang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Weiju Hao
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Qingyuan Bi
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Xinjuan Liu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Jinchen Fan
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China.
| | - Guisheng Li
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
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Fan J, Ma J, Zhu L, Wang H, Hao W, Min Y, Bi Q, Li G. Silver Nanowires Cascaded Layered Double Hydroxides Nanocages with Enhanced Directional Electron Transport for Efficient Electrocatalytic Oxygen Evolution. Small 2024:e2309859. [PMID: 38377282 DOI: 10.1002/smll.202309859] [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: 10/30/2023] [Revised: 02/06/2024] [Indexed: 02/22/2024]
Abstract
Designing and fabricating highly efficient oxygen evolution reaction (OER) electrocatalytic materials for water splitting is a promising and practical approach to green and sustainable low-carbon energy systems. Herein, a facile in situ growth self-template strategy by using ZIF-67 as a consumable layered double hydroxides (LDHs) template and silver nanowires (AgNWs) as 1D conductive cascaded substrate to controllably synthesize the target AgNWs@CoFe-LDH composites with unique hollow shell sugar gourd-like structure and enhanced directional electron transport effect is reported. The AgNWs exhibit the key functions of the close connection of CoFe-LDH nanocages and the support of the directional electron transport effect in the composite catalyst inducing electrons directionally moving from CoFe-LDH to AgNWs. Meanwhile, the CoFe-LDH nanocages with ultrathin nanosheets and hollow structural properties show abundant active sites for electrocatalytic oxygen generation. The versatile AgNWs@CoFe-LDH catalyst with optimized components, enhanced directional electron transport, and synergistic effect achieves high OER performance with the overpotential of 207 mV and long-term 50 h stability at 10 mA cm-2 in an alkaline medium. Moreover, in-depth insights into the microstructure, structure-activity relationships, identification of key intermediate species, and a proton-coupled four-electron OER mechanism based on experimental discovery and theoretical calculation are also demonstrated.
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Affiliation(s)
- Jinchen Fan
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai, 200090, P. R. China
| | - Jin Ma
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai, 200090, P. R. China
| | - Liuliu Zhu
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai, 200090, P. R. China
| | - Hui Wang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Weiju Hao
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Yulin Min
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai, 200090, P. R. China
| | - Qingyuan Bi
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Guisheng Li
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
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6
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Petrella JR, Jiang J, Sreeram K, Dalziel S, Doraiswamy PM, Hao W. Personalized Computational Causal Modeling of the Alzheimer Disease Biomarker Cascade. J Prev Alzheimers Dis 2024; 11:435-444. [PMID: 38374750 PMCID: PMC11082854 DOI: 10.14283/jpad.2023.134] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
BACKGROUND Mathematical models of complex diseases, such as Alzheimer's disease, have the potential to play a significant role in personalized medicine. Specifically, models can be personalized by fitting parameters with individual data for the purpose of discovering primary underlying disease drivers, predicting natural history, and assessing the effects of theoretical interventions. Previous work in causal/mechanistic modeling of Alzheimer's Disease progression has modeled the disease at the cellular level and on a short time scale, such as minutes to hours. No previous studies have addressed mechanistic modeling on a personalized level using clinically validated biomarkers in individual subjects. OBJECTIVES This study aimed to investigate the feasibility of personalizing a causal model of Alzheimer's Disease progression using longitudinal biomarker data. DESIGN/SETTING/PARTICIPANTS/MEASUREMENTS We chose the Alzheimer Disease Biomarker Cascade model, a widely-referenced hypothetical model of Alzheimer's Disease based on the amyloid cascade hypothesis, which we had previously implemented mathematically as a mechanistic model. We used available longitudinal demographic and serial biomarker data in over 800 subjects across the cognitive spectrum from the Alzheimer's Disease Neuroimaging Initiative. The data included participants that were cognitively normal, had mild cognitive impairment, or were diagnosed with dementia (probable Alzheimer's Disease). The model consisted of a sparse system of differential equations involving four measurable biomarkers based on cerebrospinal fluid proteins, imaging, and cognitive testing data. RESULTS Personalization of the Alzheimer Disease Biomarker Cascade model with individual serial biomarker data yielded fourteen personalized parameters in each subject reflecting physiologically meaningful characteristics. These included growth rates, latency values, and carrying capacities of the various biomarkers, most of which demonstrated significant differences across clinical diagnostic groups. The model fits to training data across the entire cohort had a root mean squared error (RMSE) of 0.09 (SD 0.081) on a variable scale between zero and one, and were robust, with over 90% of subjects showing an RMSE of < 0.2. Similarly, in a subset of subjects with data on all four biomarkers in at least one test set, performance was high on the test sets, with a mean RMSE of 0.15 (SD 0.117), with 80% of subjects demonstrating an RMSE < 0.2 in the estimation of future biomarker points. Cluster analysis of parameters revealed two distinct endophenotypic groups, with distinct biomarker profiles and disease trajectories. CONCLUSION Results support the feasibility of personalizing mechanistic models based on individual biomarker trajectories and suggest that this approach may be useful for reclassifying subjects on the Alzheimer's clinical spectrum. This computational modeling approach is not limited to the Alzheimer Disease Biomarker Cascade hypothesis, and can be applied to any mechanistic hypothesis of disease progression in the Alzheimer's field that can be monitored with biomarkers. Thus, it offers a computational platform to compare and validate various disease hypotheses, personalize individual biomarker trajectories and predict individual response to theoretical prevention and therapeutic intervention strategies.
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Affiliation(s)
- J R Petrella
- Jeffrey R. Petrella, Department of Radiology, Duke University School of Medicine, DUMC - Box 3808 , 27710-3808, NC, USA
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7
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Liang R, Fan J, Guo Y, Huang X, Lei F, Ji DK, Hao W. In situ fabrication of sporoid-like flexible electrodes via Fe-regulated electron density for highly efficient and ultra-stable overall seawater splitting. J Colloid Interface Sci 2023; 652:1170-1183. [PMID: 37657217 DOI: 10.1016/j.jcis.2023.08.157] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 07/11/2023] [Revised: 08/07/2023] [Accepted: 08/25/2023] [Indexed: 09/03/2023]
Abstract
Construction of ultra-stable, flexible, efficient and economical catalytic electrodes is of great significance for the seawater electrolysis for hydrogen production. This work is grounded in a one-step mild electroless plating method to construct industrial-grade super-stable overall water splitting (OWS) catalytic electrodes (Fe1-Ni1P@GF) by growing loose and porous spore-like Fe1-Ni1P conductive catalysts in situ on flexible glass fibre (GF) insulating substrates with precise elemental regulation. Cost-effective Fe regulation boosts the electronic conductivity and charge transfer ability to achieve the construction of high intrinsic activity and strong electron density electrodes. Fe1-Ni1P@GF exhibits remarkable catalytic performance in hydrogen and oxygen evolution reaction (HER and OER), providing current densities of 10 mA cm-2 for HER and 100 mA cm-2 for OER at overpotentials of 51 and 216 mV, respectively. Moreover, it achieves 10 mA cm-2 at 1.42 V for OWS, and exhibits stable operation for over 1440 h at 1000 mA cm-2 in quasi-industrial environment of 6.0 M KOH + 0.5 M NaCl, without any performance degradation. This strategy enables the preparation of universally applicable P-based electrodes (ternary, quaternary, etc.) and large-area flexible electrodes (paper or cotton), significantly expands the practicality of the electrodes and demonstrating promising potential for industrial applications.
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Affiliation(s)
- Rikai Liang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Jinchen Fan
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Yanhui Guo
- Department of Materials Science, Fudan University, Songhu Road 2005, Yangpu District, Shanghai 200433, PR China
| | - Xinke Huang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Fengjing Lei
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Ding-Kun Ji
- Institute of Molecular Medicine (IMM), Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200240, PR China.
| | - Weiju Hao
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China.
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8
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Hao W, Liang R, Liang S, Liu B, Qian Y, Ji DK, Li G. CDs Regulated Sulfur-Based Flexible Electrode with Range pH Values for Efficient and Durable Hydrogen Evolution Reaction. Small 2023; 19:e2304258. [PMID: 37525327 DOI: 10.1002/smll.202304258] [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: 05/21/2023] [Revised: 07/19/2023] [Indexed: 08/02/2023]
Abstract
How to mildly structure a high intrinsic activity and stable catalytic electrode to realize long-term catalytic water splitting to produce hydrogen at a wide range of pH values at industrial high current is a challenge. Herein, this work creatively proposes to prepare industrial-grade catalytic electrodes with high efficiency and stability at high current density through carbon quantum dots (CDs) modification nickel sulfide on hydrophilic flexible filter paper via one-step mild chemical plating (denoted as CDs-Ni3 S2 @HFP). The intrinsic activity and surface area, electron transfer ability, and corrosion resistance of Ni3 S2 material are increased due to the regulation, homogenous, and high concentration doping of CDs. The overpotential of the flexible catalytic electrode is only 30, 35, and 87 mV in 1 m KOH, simulated seawater (1 m KOH + 0.5 m NaCl), and neutral electrolyte (0.5 m PBS) at a current density of 10 mA cm-2 . More attractively, the CDs-Ni3 S2 @HFP electrode achieves over 500 h of efficient and stable catalysis at industrial high current density (500 mA cm-2 ). Due to the advantages of mild, universal, and large-area preparation of catalytic materials, this work provides technical support for flexible catalytic electrodes in efficient catalysis toward water splitting, energy storage, and device preparation.
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Affiliation(s)
- Weiju Hao
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Rikai Liang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Shiheng Liang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Bonan Liu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Yunlong Qian
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Ding-Kun Ji
- Institute of Molecular Medicine (IMM), Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200240, China
| | - Guisheng Li
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
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9
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Lu Z, Wang H, Tao Y, Zhu S, Hao W, Liu X, Min Y, Fan J. WO x nanoparticles coupled with nitrogen-doped porous carbon toward electrocatalytic N 2 reduction. Nanoscale 2023; 15:14847-14857. [PMID: 37642524 DOI: 10.1039/d3nr01019h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
The electrocatalytic nitrogen reduction reaction (eNRR) is a sustainable and green alternative to the traditional Haber-Bosch process. However, the chemical inertness of nitrogen gas and the competitive hydrogen evolution reaction significantly limit the catalytic performance of eNRR. Although tungsten oxide-based eNRR catalysts could donate unpaired electrons to the antibonding orbitals of N2 and accept lone electron pairs from N2 to dissociate NN triple bonds, the low electrical conductivity and the influence of the variable valence of W still affect the catalytic activity. Herein, a high-performance eNRR catalyst WOx nanoparticle/nitrogen-doped porous carbon (WOx/NPC) was prepared by a one-step thermal pyrolysis method. The results reveal that WOx gradually changes from the dominant WO2 phase to the WO3 phase. WOx/NPC-700 °C with WO2 NPs anchored on the surfaces of NPC via W-N bonding could deliver a high NH3 yield of 46.8 μg h-1 mg-1 and a high faradaic efficiency (FE) of 10.2%. The edge W atomic site on WOx/NPC is demonstrated to be the active center which could activate a stable NN triple bond with an electron-donating ability. Benefiting from the covalent interaction between the WOx nanoparticles and NPC, WOx/NPC also shows high electrocatalytic stability.
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Affiliation(s)
- Zhaobing Lu
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai, China.
| | - Hui Wang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, China.
| | - Yinghao Tao
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, China.
| | - Sheng Zhu
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai, China.
| | - Weiju Hao
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, China.
| | - Xinjuan Liu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, China.
| | - Yulin Min
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai, China.
| | - Jinchen Fan
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai, China.
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, China.
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10
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Shen Z, Zhang S, Jiang Q, Liu N, Li F, Gao Z, Pan S, Hao W, Deng Q, Liu J, Zhang J, Xie Y. Lipid nanoparticle-mediated delivery of IL-21-encoding mRNA induces viral clearance in mouse models of hepatitis B virus persistence. J Med Virol 2023; 95:e29062. [PMID: 37665238 DOI: 10.1002/jmv.29062] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 07/19/2023] [Accepted: 08/17/2023] [Indexed: 09/05/2023]
Abstract
Hepatitis B virus (HBV) covalently closed circular DNA (cccDNA), the transcription template for all viral mRNAs, is highly stable and current treatment options cannot effectively induce its clearance. Previously, we established an HBV persistence mouse model based on a clinical isolate (termed BPS) and identified interleukin-21 (IL-21) as a potent inducer of HBV clearance. Lipid nanoparticle (LNP) mediated delivery of mRNA has proven to be a highly safe and effective delivery platform. This work explored the applicability and effectiveness of the mRNA-LNP platform in IL-21-based HBV therapies. First, LNP-encapsulated murine IL-21 mRNA (LNP-IL-21) was prepared, characterized, and demonstrated to engender IL-21 expression in vitro and in vivo. Next, LNP-IL-21 was shown to induce clearance of both serum and intrahepatic HBV antigen and DNA in two HBV persistence mouse models based on BPS and recombinant cccDNA (rcccDNA), respectively, which was associated with HBV-specific humoral and cellular immune responses. Furthermore, peripheral blood mononuclear cells from BPS persistence mice treated ex vivo with LNP-IL-21 and HBV surface antigen (HBsAg) could induce similar HBV clearance upon infusion into recipient mice. These findings indicated that IL-21 combined with mRNA-LNP platform represents a valid and promising strategy for developing novel therapeutics against chronic HBV infection.
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Affiliation(s)
- Zhongliang Shen
- Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, Department of Infectious Diseases, National Medical Center for Infectious Diseases, Shanghai Institute of Infectious Diseases and Biosecurity, Huashan Hospital, Fudan University, Shanghai, China
- Key Laboratory of Medical Molecular Virology (Ministry of Education/National Health Commission/Chinese Academy of Medical Sciences), Department of Microbiology and Parasitology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Shenyan Zhang
- Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, Department of Infectious Diseases, National Medical Center for Infectious Diseases, Shanghai Institute of Infectious Diseases and Biosecurity, Huashan Hospital, Fudan University, Shanghai, China
| | - Qirong Jiang
- Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, Department of Infectious Diseases, National Medical Center for Infectious Diseases, Shanghai Institute of Infectious Diseases and Biosecurity, Huashan Hospital, Fudan University, Shanghai, China
| | - Nannan Liu
- Key Laboratory of Medical Molecular Virology (Ministry of Education/National Health Commission/Chinese Academy of Medical Sciences), Department of Microbiology and Parasitology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Fahong Li
- Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, Department of Infectious Diseases, National Medical Center for Infectious Diseases, Shanghai Institute of Infectious Diseases and Biosecurity, Huashan Hospital, Fudan University, Shanghai, China
| | - Zixiang Gao
- Key Laboratory of Medical Molecular Virology (Ministry of Education/National Health Commission/Chinese Academy of Medical Sciences), Department of Microbiology and Parasitology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Shaokun Pan
- Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, Department of Infectious Diseases, National Medical Center for Infectious Diseases, Shanghai Institute of Infectious Diseases and Biosecurity, Huashan Hospital, Fudan University, Shanghai, China
| | - Weiju Hao
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, China
| | - Qiang Deng
- Key Laboratory of Medical Molecular Virology (Ministry of Education/National Health Commission/Chinese Academy of Medical Sciences), Department of Microbiology and Parasitology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jing Liu
- Key Laboratory of Medical Molecular Virology (Ministry of Education/National Health Commission/Chinese Academy of Medical Sciences), Department of Microbiology and Parasitology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Medical Epigenetics, Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jiming Zhang
- Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, Department of Infectious Diseases, National Medical Center for Infectious Diseases, Shanghai Institute of Infectious Diseases and Biosecurity, Huashan Hospital, Fudan University, Shanghai, China
- Key Laboratory of Medical Molecular Virology (Ministry of Education/National Health Commission/Chinese Academy of Medical Sciences), Department of Microbiology and Parasitology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Youhua Xie
- Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, Department of Infectious Diseases, National Medical Center for Infectious Diseases, Shanghai Institute of Infectious Diseases and Biosecurity, Huashan Hospital, Fudan University, Shanghai, China
- Key Laboratory of Medical Molecular Virology (Ministry of Education/National Health Commission/Chinese Academy of Medical Sciences), Department of Microbiology and Parasitology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
- Children's Hospital, Fudan University, Shanghai, China
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11
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Liu Y, Tao Y, Lu Z, Teng J, Hao W, Lin J, Li G. NaCl template-assisted construction of a CoP-MoP heterostructured electrocatalyst for electrocatalytic nitrogen reduction. Dalton Trans 2023; 52:11631-11637. [PMID: 37551580 DOI: 10.1039/d3dt00686g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/09/2023]
Abstract
The electrocatalytic nitrogen reduction reaction (NRR) to ammonia is a promising technology to store renewable energy and mitigate greenhouse gas emissions. However, it usually suffers from low ammonia yield and selectivity because of the lack of efficient electrocatalysts. Herein, we report that the construction of metal phosphide heterojunctions is an efficient strategy for NRR activity enhancement. A CoP-MoP heterojunction electrocatalyst, which is fabricated by a facile NaCl template-assisted strategy, exhibits a favorable ammonia yield rate of 77.8 μg h-1 mgcat-1 (38.9 μg h-1 cm-2) and a high faradaic efficiency of 11.16% at -0.50 V versus the reversible hydrogen electrode. The high NRR electrocatalytic activity can be attributed to the electronic coupling effects and interfacial synergistic effects of CoP and MoP at the heterojunction interface, which accelerates the electron transfer rate. Moreover, Mo doping changes the d-band centers of metal sites on the CoP surface, which is conducive to N2 adsorption and promotes N2* adsorption in the competition of occupying active sites, thus inhibiting the HER. This work manifests the high potential of phosphide electrocatalysts and opens an alternative route toward NRR electrocatalysis.
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Affiliation(s)
- Yunni Liu
- Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China.
| | - Yinghao Tao
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, P. R. China.
| | - Zhaobing Lu
- College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, P. R. China
| | - Jing Teng
- College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, P. R. China
| | - Weiju Hao
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, P. R. China.
| | - Jun Lin
- Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China.
| | - Guisheng Li
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, P. R. China.
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12
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Liang R, Fan J, Lei F, Li P, Fu C, Lu Z, Hao W. Fabrication of ultra-stable and high-efficient CoP-based electrode toward seawater splitting at industrial-grade current density. J Colloid Interface Sci 2023; 645:227-240. [PMID: 37149997 DOI: 10.1016/j.jcis.2023.04.143] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 04/24/2023] [Accepted: 04/26/2023] [Indexed: 05/09/2023]
Abstract
The mild and rapid construction of economical, efficient and ultrastable electrodes for hydrogen production via water splitting at industrial-grade current density remains extremely challenging. Herein, a one-step mild electroless plating method is proposed to deposit cobalt phosphorus (CoP)-based species on robust nickel net (NN, denoted as Co-P@NN). The tight interfacial contact, corrosion-proof self-supporting substrate and synergistic effect of Co-P@Co-O contribute greatly to the rapid electron transport, high intrinsic activity and long-term durability in the alkaline simulated seawater (1.0 M KOH + 0.5 M NaCl). Attractively, Co-P@Co-O also achieves ultrastable catalysis for over 2880 h with negligible activity attenuation under various alkaline extreme conditions (simulated seawater, high-salt environment, domestic sewage and so on). Furthermore, this work successfully constructs a series of ternary elemental doped (Ni, S, B, Fe and so on) CoP-based catalytic electrodes for highly efficient overall seawater splitting (OSWS). This work demonstrates not only an ideal platform for the versatile strategy of mildly obtaining CoP-based electrocatalysts but also the pioneering philosophy of large-scale hydrogen production.
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Affiliation(s)
- Rikai Liang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Jinli Fan
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Fengjing Lei
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Peng Li
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Chengyu Fu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Zikang Lu
- School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Weiju Hao
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China.
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13
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Gui X, Zhang H, Zhang R, Li Q, Zhu W, Nie Z, Zhao J, Cui X, Hao W, Wen X, Shen W, Song H. Exosomes incorporated with black phosphorus quantum dots attenuate retinal angiogenesis via disrupting glucose metabolism. Mater Today Bio 2023; 19:100602. [PMID: 36942311 PMCID: PMC10024194 DOI: 10.1016/j.mtbio.2023.100602] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 02/26/2023] [Accepted: 03/03/2023] [Indexed: 03/06/2023] Open
Abstract
Black phosphorus quantum dots (BPQDs) have shown potential in tumor therapy, however, their anti-angiogenic functions have not been studied. Although BPQDs are easily degraded to non-toxic phosphrous, the reported toxicity, poor stability, and non-selectivity largely limit their further application in medicine. In this study, a vascular targeting, biocompatible, and cell metabolism-disrupting nanoplatform is engineered by incorporating BPQDs into exosomes modified with the Arg-Gly-Asp (RGD) peptide (BPQDs@RGD-EXO nanospheres, BREs). BREs inhibit endothelial cells (ECs) proliferation, migration, tube formation, and sprouting in vitro. The anti-angiogenic role of BREs in vivo is evaluated using mouse retinal vascular development model and oxygen-induced retinopathy model. Combined RNA-seq and metabolomic analysis reveal that BREs disrupt glucose metabolism, which is further confirmed by evaluating metabolites, ATP production and the c-MYC/Hexokinase 2 pathway. These BREs are promising anti-angiogenic platforms for the treatment of pathological retinal angiogenesis with minimal side effects.
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Affiliation(s)
- Xiao Gui
- Department of Ophthalmology, Shanghai Changhai Hospital, No. 168 Changhai Road, Shanghai, 200433, China
| | - Haorui Zhang
- Department of Ophthalmology, Shanghai Changhai Hospital, No. 168 Changhai Road, Shanghai, 200433, China
| | - Rui Zhang
- Department of Ophthalmology, Shanghai Changhai Hospital, No. 168 Changhai Road, Shanghai, 200433, China
| | - Qing Li
- Department of Ophthalmology, Shanghai Changhai Hospital, No. 168 Changhai Road, Shanghai, 200433, China
| | - Weiye Zhu
- Department of Ophthalmology, Shanghai Changhai Hospital, No. 168 Changhai Road, Shanghai, 200433, China
| | - Zheng Nie
- Department of Ophthalmology, Shanghai Changhai Hospital, No. 168 Changhai Road, Shanghai, 200433, China
| | - Jiawei Zhao
- Department of Ophthalmology, Shanghai Changhai Hospital, No. 168 Changhai Road, Shanghai, 200433, China
| | - Xiao Cui
- Department of Ophthalmology, Shanghai Changhai Hospital, No. 168 Changhai Road, Shanghai, 200433, China
| | - Weiju Hao
- University of Shanghai for Science and Technology, Shanghai, 200093, PR China
| | - Xudong Wen
- Department of Gastroenterology, Chengdu Integrated TCM&Western Medicine Hospital, Chengdu University of TCM, Chengdu, 610016, China
- Corresponding author.
| | - Wei Shen
- Department of Ophthalmology, Shanghai Changhai Hospital, No. 168 Changhai Road, Shanghai, 200433, China
- Corresponding author.
| | - Hongyuan Song
- Department of Ophthalmology, Shanghai Changhai Hospital, No. 168 Changhai Road, Shanghai, 200433, China
- Corresponding author.
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14
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Wang H, Feng T, Wang L, Hao W. Quantum dot-doped CeO x-NiB with modulated electron density as a highly efficient bifunctional electrocatalyst for water splitting. Nanoscale 2023; 15:6321-6332. [PMID: 36912671 DOI: 10.1039/d2nr06561d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Development of economical, efficient and durable non-noble metal electrocatalysts for the hydrogen/oxygen evolution reaction (HER/OER) holds great promise, but still faces great challenges. Herein, a strategy of doping metal borides with rare earth metal oxides and introducing silicon carbide (SiC) quantum dots has been explored to develop efficient bifunctional electrocatalysts. A novel electrocatalyst consists of SiC quantum dot-decorated CeOx-NiB supported on nickel foam via a one-step mild electroless plating reaction (denoted as CeOx-NiB/SiC@NF). Notably, the modulated electron density of the CeOx-NiB/SiC@NF electrode significantly boosts the electrochemically active surface area and electron transfer, and optimizes the hydrogen/water absorption free energy, which delivers current densities of 50 mA cm-2 and 10 mA cm-2 at overpotentials of only 131 mV and 234 mV for the HER and the OER, respectively. The target electrode requires only 1.43 V to provide 10 mA cm-2 for overall water splitting in 1.0 M KOH. Moreover, the electrode also exhibits good stability and durability at the industrial-grade current density (0.5-1 A cm-2). This work provides a new idea for the development of efficient and durable non-precious metal catalysts.
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Affiliation(s)
- Huimin Wang
- School of Resource and Environmental Engineering, Shanghai Polytechnic University, Shanghai 201209, P. R. China.
| | - Tao Feng
- School of Resource and Environmental Engineering, Shanghai Polytechnic University, Shanghai 201209, P. R. China.
| | - Lincai Wang
- School of Resource and Environmental Engineering, Shanghai Polytechnic University, Shanghai 201209, P. R. China.
| | - Weiju Hao
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, P. R. China.
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15
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Fu C, Fan J, Zhang Y, Lv H, Ji D, Hao W. Mild construction of an Fe-B-O based flexible electrode toward highly efficient alkaline simulated seawater splitting. J Colloid Interface Sci 2023; 634:804-816. [PMID: 36565622 DOI: 10.1016/j.jcis.2022.12.104] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 12/07/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022]
Abstract
It is essential to construct self-supporting electrodes based on earth-abundant iron borides in a mild and economical manner for grid-scale hydrogen production. Herein, a series of highly efficient, flexible, robust, and scalable Fe-B-O@FeBx modified on hydrophilic cloth (denoted as Fe-B-O@FeBx/HC, 10 cm × 10 cm) are fabricated by mild electroless plating. The overpotentials and Tafel slope values for the hydrogen and oxygen evolution reactions are 59 mV and 57.62 mV dec-1 and 181 mV and 65.44 mV dec-1, respectively; only 1.462 V is required to achieve 10 mA cm-2 during overall water splitting (OWS). Fe-B-O@FeBx/HC maintains its high catalytic activity for more than 7 days at an industrial current density (400 mA cm-2), owing to the loosened popcorn-like Fe-B-O@FeBx that is firmly loaded on a 2D-layered and mechanically robust substrate along with its fast charge and mass transfer kinetics. The chimney effect of core-shell borides@(oxyhydro)oxides enhances the OWS performance and protects the inner metal borides from further corrosion. Moreover, the flexible Fe-B-O@FeBx/HC electrode has a low cost for grid-scale hydrogen production ($2.97 kg-1). The proposed strategy lays a solid foundation for universal preparation, large-scale hydrogen production and practical applications thereof.
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Affiliation(s)
- Chengyu Fu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Jinli Fan
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Yiran Zhang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Haiyang Lv
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Dingkun Ji
- Institute of Molecular Medicine (IMM), School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, PR China
| | - Weiju Hao
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China.
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16
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Xin Y, Cang Y, Wang Z, Dou X, Hao W, Miao Y. Construction of Non-Precious Metal Self-Supported Electrocatalysts for Oxygen Evolution from a Low-Temperature Immersion Perspective. CHEM REC 2023; 23:e202200259. [PMID: 36744591 DOI: 10.1002/tcr.202200259] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 01/19/2023] [Indexed: 02/07/2023]
Abstract
Water splitting is considered as a promising technology to solve energy shortage and environmental pollution. Since oxygen evolution reaction (OER) directly affects the efficiency of hydrogen evolution, the preparation of efficient and inexpensive OER catalysts is an urgent problem. "Low-temperature immersion" (LTI) is expected to be a prospective strategy for electrocatalyst preparation due to its simplicity and energy-saving advantages. However, there is almost no comprehensive overview on the progress of LTI engineering in the construction of non-precious metal self-supported electrocatalysts for OER. Herein, this review firstly introduces the principles and applications of LTI engineering-assisted preparation of non-precious metal self-supported electrocatalysts in terms of etching and deposition. Then the mechanism of OER is analyzed from an amorphous viewpoint, and finally some perspective insights and future challenges of this method are discussed.
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Affiliation(s)
- Yanmei Xin
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Jungong Rd 334#, Shanghai, 200093, China
| | - Yegui Cang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Jungong Rd 334#, Shanghai, 200093, China
| | - Zhuo Wang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Jungong Rd 334#, Shanghai, 200093, China
| | - Xiaoru Dou
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Jungong Rd 334#, Shanghai, 200093, China
| | - Weiju Hao
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Jungong Rd 334#, Shanghai, 200093, China
| | - Yuqing Miao
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Jungong Rd 334#, Shanghai, 200093, China
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17
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Fu C, Hao W, Fan J, Zhang Q, Guo Y, Fan J, Chen Z, Li G. Fabrication of Ultra-Durable and Flexible NiP x -Based Electrode toward High-Efficient Alkaline Seawater Splitting at Industrial Grade Current Density. Small 2023; 19:e2205689. [PMID: 36585395 DOI: 10.1002/smll.202205689] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 12/08/2022] [Indexed: 06/17/2023]
Abstract
Designing nonprecious metal-based electrocatalysts to yield sustainable hydrogen energy by large-scale seawater electrolysis is challenging to global emissions of carbon neutrality and carbon peaking. Herein, a series of highly efficient, economical, and robust Ni-P-based nanoballs grown on the flexible and anti-corrosive hydrophobic asbestos (NiPx @HA) is synthesized by electroless plating at 25 °C toward alkaline simulated seawater splitting. On the basis of the strong chemical attachment between 2D layered substrate and nickel-rich components, robust hexagonal Ni5 P4 crystalline modification, and fast electron transfer capability, the overpotentials during hydrogen/oxygen evolution reaction (HER/OER) are 208 and 392 mV at 200 mA cm-2 , and the chronopotentiometric measurement at 500 mA cm-2 lasts for over 40 days. Additionally, the versatile strategy is broadly profitable for industrial applications and enables multi-elemental doping (iron/cobalt/molybdenum/boron/tungsten), flexible substrate employment (nickel foam/filter paper/hydrophilic cloth), and scalable synthesis (22 cm × 22 cm). Density functional theory (DFT) also reveals that the optimized performance is due to the fundamental effect of incorporating O-source into Ni5 P4 . Therefore, this work exhibits a complementary strategy in the construction of NiPx -based electrodes and offers bright opportunities to produce scalable hydrogen effectively and stably in alkaline corrosive electrolytes.
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Affiliation(s)
- Chengyu Fu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Weiju Hao
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Jinli Fan
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Qiang Zhang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Yanhui Guo
- Fudan University, Shanghai, 200433, China
| | - Jinchen Fan
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Ziliang Chen
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, China
| | - Guisheng Li
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, China
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18
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Song J, Gao X, Yang M, Hao W, Ji DK. Recent Advances of Photoactive Near-Infrared Carbon Dots in Cancer Photodynamic Therapy. Pharmaceutics 2023; 15:pharmaceutics15030760. [PMID: 36986621 PMCID: PMC10051950 DOI: 10.3390/pharmaceutics15030760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 02/19/2023] [Accepted: 02/22/2023] [Indexed: 03/03/2023] Open
Abstract
Photodynamic therapy (PDT) is a treatment that employs exogenously produced reactive oxygen species (ROS) to kill cancer cells. ROS are generated from the interaction of excited-state photosensitizers (PSs) or photosensitizing agents with molecular oxygen. Novel PSs with high ROS generation efficiency is essential and highly required for cancer photodynamic therapy. Carbon dots (CDs), the rising star of carbon-based nanomaterial family, have shown great potential in cancer PDT benefiting from their excellent photoactivity, luminescence properties, low price, and biocompatibility. In recent years, photoactive near-infrared CDs (PNCDs) have attracted increasing interest in this field due to their deep therapeutic tissue penetration, superior imaging performance, excellent photoactivity, and photostability. In this review, we review recent progress in the designs, fabrication, and applications of PNCDs in cancer PDT. We also provide insights of future directions in accelerating the clinical progress of PNCDs.
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Affiliation(s)
- Jinxing Song
- Institute of Molecular Medicine, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Xiaobo Gao
- Department of Anatomy and Physiology, Shanghai Jiao Tong University School of Medicine, Shanghai 200240, China
| | - Mei Yang
- Institute of Molecular Medicine, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Weiju Hao
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Ding-Kun Ji
- Institute of Molecular Medicine, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
- Correspondence:
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19
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Lingling C, Hao W, Fuqiang Y, Chao G, Honglin D, Xiaojie S, Yang Z, Jiaxin Z, Lihong S, Hongmin L, Qiurong Z. Design, Synthesis and Antitumor Activity Evaluation of Trifluoromethyl-Containing Polysubstituted Pyrimidine Derivatives. Russ J Bioorg Chem 2022. [DOI: 10.1134/s1068162023010168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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20
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Fan J, Fu C, Liang R, Lv H, Fang C, Guo Y, Hao W. Mild Construction of "Midas Touch" Metal-Organic Framework-Based Catalytic Electrodes for Highly Efficient Overall Seawater Splitting. Small 2022; 18:e2203588. [PMID: 36287089 DOI: 10.1002/smll.202203588] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 09/15/2022] [Indexed: 06/16/2023]
Abstract
Mild construction of highly efficient and durable practical electrodes for overall water splitting (OWS) at industrial-grade current density is currently a significant challenge. Herein, metal-organic framework (MOF) materials are grown in situ on the surface of carbon cloth (CC) at 25 °C, and quickly "interspersed" by cobalt-boron (Co-B) via electroless plating for 30 min to obtain a highly efficient and stable CoB@MOF@CC self-supporting electrode. Owing to the large specific surface area, abundant active sites, and porous structure, the MOF-based CC modified by bamboo leaf-like ultrathin CoB has remarkable electrochemical catalysis efficiency. The CoB@MOF@CC electrode exhibits excellent performance during the hydrogen evolution reaction (η10 = 57 mV, η500 = 266 mV) and oxygen evolution reaction (η10 = 209 mV, η500 = 423 mV) in alkaline simulated seawater, and is durable for 2500 h at 500 mA cm-2 . The OWS performance is obviously enhanced by employing the prepared electrode, which only requires 1.49 V to achieve 10 mA cm-2 and is durable for over 360 h at industrial-grade current densities in alkaline high-salt, real seawater, rainwater, and urea electrolytes.
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Affiliation(s)
- Jinli Fan
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Chengyu Fu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Rikai Liang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Haiyang Lv
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Chaosong Fang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Yanhui Guo
- Department of Materials Science, Fudan University, Shanghai, 200433, P. R. China
| | - Weiju Hao
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
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21
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Lv H, Fu C, Fan J, Zhang Y, Hao W. Mild construction of robust FeS-based electrode for pH-universal hydrogen evolution at industrial current density. J Colloid Interface Sci 2022; 626:384-394. [DOI: 10.1016/j.jcis.2022.06.166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Revised: 06/12/2022] [Accepted: 06/28/2022] [Indexed: 11/17/2022]
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22
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Wu J, Hou M, Chen Z, Hao W, Pan X, Yang H, Cen W, Liu Y, Huang H, Menezes PW, Kang Z. Composition Engineering of Amorphous Nickel Boride Nanoarchitectures Enabling Highly Efficient Electrosynthesis of Hydrogen Peroxide. Adv Mater 2022; 34:e2202995. [PMID: 35736517 DOI: 10.1002/adma.202202995] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 05/18/2022] [Indexed: 06/15/2023]
Abstract
Developing advanced electrocatalysts with exceptional two electron (2e- ) selectivity, activity, and stability is crucial for driving the oxygen reduction reaction (ORR) to produce hydrogen peroxide (H2 O2 ). Herein, a composition engineering strategy is proposed to flexibly regulate the intrinsic activity of amorphous nickel boride nanoarchitectures for efficient 2e- ORR by oriented reduction of Ni2+ with different amounts of BH4 - . Among borides, the amorphous NiB2 delivers the 2e- selectivity close to 99% at 0.4 V and over 93% in a wide potential range, together with a negligible activity decay under prolonged time. Notably, an ultrahigh H2 O2 production rate of 4.753 mol gcat -1 h-1 is achieved upon assembling NiB2 in the practical gas diffusion electrode. The combination of X-ray absorption and in situ Raman spectroscopy, as well as transient photovoltage measurements with density functional theory, unequivocally reveal that the atomic ratio between Ni and B induces the local electronic structure diversity, allowing optimization of the adsorption energy of Ni toward *OOH and reducing of the interfacial charge-transfer kinetics to preserve the OO bond.
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Affiliation(s)
- Jie Wu
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, P. R. China
| | - Meilin Hou
- College of Engineering, Hebei Normal University, Shijiazhuang, 050024, P. R. China
| | - Ziliang Chen
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, P. R. China
- Department of Chemistry: Metalorganics and Inorganic Materials, Technische Universität Berlin, Straße des 17 Juni 135, Sekr. C2, 10623, Berlin, Germany
| | - Weiju Hao
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Xuelei Pan
- Institute of New Energy and Low Carbon Technology, Sichuan University, Chengdu, 610065, P. R. China
| | - Hongyuan Yang
- Department of Chemistry: Metalorganics and Inorganic Materials, Technische Universität Berlin, Straße des 17 Juni 135, Sekr. C2, 10623, Berlin, Germany
| | - Wanglai Cen
- College of Science, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
- Institute of New Energy and Low Carbon Technology, Sichuan University, Chengdu, 610065, P. R. China
| | - Yang Liu
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, P. R. China
| | - Hui Huang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, P. R. China
| | - Prashanth W Menezes
- Department of Chemistry: Metalorganics and Inorganic Materials, Technische Universität Berlin, Straße des 17 Juni 135, Sekr. C2, 10623, Berlin, Germany
- Material Chemistry Group for Thin Film Catalysis - CatLab, Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Str. 15, 12489, Berlin, Germany
| | - Zhenhui Kang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, P. R. China
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Yao D, Hao W, Weng S, Hou M, Cen W, Li G, Chen Z, Li Y. Local Photothermal Effect Enabling Ni 3 Bi 2 S 2 Nanoarray Efficient Water Electrolysis at Large Current Density. Small 2022; 18:e2106868. [PMID: 35088573 DOI: 10.1002/smll.202106868] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/14/2021] [Indexed: 06/14/2023]
Abstract
In terms of the large-scale hydrogen production by water electrolysis, achieving the bifunctional electrocatalyst with high efficiency and stability at high current densities is of great significance but still remains a grand challenge. To address this issue, herein, one unique hybrid electrode is synthesized with the local photothermal effect (LPTE) by supporting the novel ternary nickel (Ni)bismuth (Bi)sulfur (S) nanosheet arrays onto nickel foam (Ni3 Bi2 S2 @NF) via a one-pot hydrothermal reaction. The combined experimental and theoretical observations reveal that owing to the intrinsic LPTE action of Bi, robust phase stability of Ni3 Bi2 S2 as well as the synergistic effect with hierarchical configuration, upon injecting the light, the as-prepared Ni3 Bi2 S2 exhibits remarkably improved efficiency of 44% and 35% for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), respectively. Such enhanced values are also comparable to those performed in working media heated to 80 °C. In addition, the overall water splitting system by using Ni3 Bi2 S2 @NF as bifunctional electrodes only delivers an ultralow voltage of 1.40 V at 10 mA cm-2 under LPTE, and can be stable more than 36 h at 500-1000 mA cm-2 . More broadly, even worked at 0-5 °C, alkaline simulated seawater and high salt seawater, the electrodes still show apparent LPTE effect for improving catalytic efficiency.
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Affiliation(s)
- Dongxue Yao
- University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Weiju Hao
- University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Shuo Weng
- University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Meiling Hou
- College of Engineering, Hebei Normal University, Shijiazhuang, 050024, P. R. China
| | - Wanglai Cen
- Institute of New Energy and Low Carbon Technology, Sichuan University, Chengdu, 610065, P. R. China
| | - Guisheng Li
- University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Ziliang Chen
- Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, 215123, P. R. China
| | - Yongtao Li
- School of Materials Science and Engineering, Anhui University of Technology, Maanshan, 243002, China
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24
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Miao H, Hao W, Liu H, Liu Y, Fu X, Huang H, Ge M, Qian Y. Highly Flexibility, Powder Self-Healing, and Recyclable Natural Polymer Hydrogels. Gels 2022; 8:gels8020089. [PMID: 35200470 PMCID: PMC8871090 DOI: 10.3390/gels8020089] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 01/05/2022] [Accepted: 01/12/2022] [Indexed: 02/01/2023] Open
Abstract
Based on the good self-healing ability to repair mechanical damage, self-healing hydrogels have aroused great interest and been extensively applied as functional materials. However, when partial failure of hydrogels caused by breaking or dryness occurs, leading to recycling problems, self-healing hydrogels cannot solve the mentioned defects and have to be abandoned. In this work, a novel recyclable and self-healing natural polymer hydrogel (Chitosan/polymethylacrylic acid-: CMA) was prepared. The CMA hydrogel not only exhibited controlled mechanical properties from 26 kPa to 125 kPa with tensile strain from 1357% to 3012%, but also had good water retaining property, stability and fast self-healing properties in 1 min. More importantly, the CMA hydrogel displayed attractive powder self-healing performance. After drying–powdering treatment, the mentioned abandoned hydrogels could easily rebuild their frame structure to recover their original state and performance in 1 min only by adding a small amount of water, which could significantly prolong their service life. These advantages guarantee the hydrogel can effectively defend against reversible mechanical damage, water loss and partial hydrogel failure, suggesting great potential applications as a recyclable functional hydrogel for biomaterials and electronic materials.
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Affiliation(s)
- Haiyue Miao
- School of Materials and Chemistry, University of Shanghai for Science and Technology, No. 516 Jungong Road, Shanghai 200093, China; (H.M.); (W.H.)
- Key Laboratory of Interfacial Physics and Technology, Department of Molten Salt Chemistry and Engineering, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China; (H.L.); (Y.L.); (M.G.)
| | - Weiju Hao
- School of Materials and Chemistry, University of Shanghai for Science and Technology, No. 516 Jungong Road, Shanghai 200093, China; (H.M.); (W.H.)
| | - Hongtao Liu
- Key Laboratory of Interfacial Physics and Technology, Department of Molten Salt Chemistry and Engineering, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China; (H.L.); (Y.L.); (M.G.)
| | - Yiyang Liu
- Key Laboratory of Interfacial Physics and Technology, Department of Molten Salt Chemistry and Engineering, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China; (H.L.); (Y.L.); (M.G.)
| | - Xiaobin Fu
- Key Laboratory of Interfacial Physics and Technology, Department of Molten Salt Chemistry and Engineering, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China; (H.L.); (Y.L.); (M.G.)
- Correspondence: (X.F.); (H.H.); (Y.Q.)
| | - Hailong Huang
- Key Laboratory of Interfacial Physics and Technology, Department of Molten Salt Chemistry and Engineering, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China; (H.L.); (Y.L.); (M.G.)
- Correspondence: (X.F.); (H.H.); (Y.Q.)
| | - Min Ge
- Key Laboratory of Interfacial Physics and Technology, Department of Molten Salt Chemistry and Engineering, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China; (H.L.); (Y.L.); (M.G.)
| | - Yuan Qian
- Key Laboratory of Interfacial Physics and Technology, Department of Molten Salt Chemistry and Engineering, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China; (H.L.); (Y.L.); (M.G.)
- Correspondence: (X.F.); (H.H.); (Y.Q.)
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25
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Zhang Y, Fu C, Fan J, Lv H, Hao W. Preparation of Ti@NiB electrode via electroless plating toward high-efficient alkaline simulated seawater splitting. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115761] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Hao W, Fan J, Xu X, Zhang Y, Lv H, Wang S, Deng S, Weng S, Guo Y. Sulfur doped FeO x nanosheet arrays supported on nickel foam for efficient alkaline seawater splitting. Dalton Trans 2021; 50:13312-13319. [PMID: 34608917 DOI: 10.1039/d1dt02506f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Developing economical, efficient and stable bifunctional catalysts for hydrogen production from seawater is of great significance for hydrogen utilization. Herein, sulfur doped iron oxide nanosheet arrays supported on nickel foam (FeOx-Ni3S2@NF) are prepared by a one-pot solvothermal reaction. Owing to the high intrinsic activity of FeOx-Ni3S2, the large catalytic specific surface area of nanosheet arrays and the fast charge transportation capability achieved by the self-supporting configuration, the FeOx-Ni3S2@NF electrode delivers excellent catalytic performance in alkaline simulated seawater (1 M KOH + 0.5 M NaCl). Impressively, a low overpotential of 120 mV at 50 mA cm-2 with a Tafel slope of 57 mV dec-1 for the hydrogen evolution reaction and an overpotential of 470 mV at 200 mA cm-2 with a Tafel slope of 62 mV dec-1 for the oxygen evolution reaction are achieved. More importantly, the voltage is only 1.5 V at 50 mA cm-2 for continuous overall water splitting for 100 h at 200 mA cm-2 with negligible decay in alkaline simulated seawater with almost 100% Faraday efficiency. This work provides a simple and universal strategy to prepare highly efficient bifunctional catalytic materials, promoting the development of Earth-abundant materials to catalyse seawater splitting to produce high-purity hydrogen.
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Affiliation(s)
- Weiju Hao
- University of Shanghai for Science and Technology, Shanghai, 200093, China.
| | - Jinli Fan
- University of Shanghai for Science and Technology, Shanghai, 200093, China.
| | - Xia Xu
- University of Shanghai for Science and Technology, Shanghai, 200093, China.
| | - Yiran Zhang
- University of Shanghai for Science and Technology, Shanghai, 200093, China.
| | - Haiyang Lv
- University of Shanghai for Science and Technology, Shanghai, 200093, China.
| | - Shige Wang
- University of Shanghai for Science and Technology, Shanghai, 200093, China.
| | - Shengwei Deng
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Shuo Weng
- University of Shanghai for Science and Technology, Shanghai, 200093, China.
| | - Yanhui Guo
- Fudan University, Shanghai 200433, P. R. China.
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Wang X, Hao W, Fan JY, Guo RF, Huang X, Li ZX, Li SY, Wang G, Zhang Y, Gong W, Nie SP. [Impact of obstructive sleep apnea on the long-term cardiovascular outcomes in patients with acute coronary syndrome]. Zhonghua Xin Xue Guan Bing Za Zhi 2021; 49:776-782. [PMID: 34404186 DOI: 10.3760/cma.j.cn112148-20210423-00368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the impact of obstructive sleep apnea (OSA) on long-term cardiovascular outcomes in patients with acute coronary syndrome (ACS). Methods: This is a single-center, prospective cohort study. Between June 2015 to January 2020, consecutive ACS patients hospitalized at Beijing Anzhen Hospital, Capital Medical University were enrolled. All patients underwent portable sleep breathing monitoring, and they were then divided into moderate/severe OSA group (apnea-hypopnea index (AHI)≥15 events/hour) and no/mild OSA group (AHI<15 events/hour). The primary endpoint was major adverse cardiac and cerebrovascular event (MACCE), defined as a composite of cardiovascular death, non-fatal myocardial infarction, non-fatal stroke, ischemia-driven revascularization and hospital admission for unstable angina or heart failure. MACCE were compared yearly by the log-rank test. Multivariable Cox regression analyses were performed to determine the independent predictors of MACCE. Results: A total of 1 927 patients with ACS were enrolled, including 1 629 males (84.5%), aged (56.4±10.5) years. Moderate/severe OSA was present in 1 014 (52.6%) patients. Compared with no/mild OSA group, moderate/severe OSA group exhibited a higher body mass index (P<0.05). Hypertension, prior PCI were more prevalent in moderate/severe OSA group (both P<0.05). The difference of ACS category between the two groups was statistically significant (P=0.021). The rate of patients who underwent PCI and the number of stents were higher in the moderate/severe OSA group. During a 5-year follow-up (median 2.9 years (IQR 1.5-3.6 years)), the cumulative incidence of MACCE was significantly higher in the moderate/severe OSA group than in the no/mild OSA group (34.0% vs. 24.0%, HR=1.346, 95%CI 1.100-1.646, log-rank P=0.004). The cumulative incidence of MACCE remained statistically higher at 4 and 5 year in the moderate/severe OSA group as compared to the no/mild OSA group (33.3% vs. 22.9%, HR=1.397, 95%CI 1.141-1.710, log-rank P=0.001; 34.0% vs. 24.0%, HR=1.341, 95%CI 1.096-1.640, log-rank P=0.004, respectively). Multivariate analysis showed that moderate/severe OSA (HR=1.312, 95%CI 1.054-1.631, P=0.015) was an independent predictor of long-term MACCE in ACS patients. Conclusions: Moderate/severe OSA is observed in more than 52% ACS patients. Moderate/severe OSA is an independent predictor of long-term MACCE.
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Affiliation(s)
- X Wang
- Center for Coronary Artery Disease, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - W Hao
- Center for Coronary Artery Disease, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - J Y Fan
- Center for Coronary Artery Disease, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - R F Guo
- Center for Coronary Artery Disease, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - X Huang
- Center for Coronary Artery Disease, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - Z X Li
- Center for Coronary Artery Disease, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - S Y Li
- Center for Coronary Artery Disease, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - G Wang
- Center for Coronary Artery Disease, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - Y Zhang
- Cardiovascular Center, Beijing Tongren Hospital, Capital Medical University, Beijing 100176, China
| | - W Gong
- Center for Coronary Artery Disease, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - S P Nie
- Center for Coronary Artery Disease, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
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Yao D, Gu L, Zuo B, Weng S, Deng S, Hao W. A strategy for preparing high-efficiency and economical catalytic electrodes toward overall water splitting. Nanoscale 2021; 13:10624-10648. [PMID: 34132310 DOI: 10.1039/d1nr02307a] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Electrolyzing water technology to prepare high-purity hydrogen is currently an important field in energy development. However, the preparation of efficient, stable, and inexpensive hydrogen production technology from electrolyzed water is a major problem in hydrogen energy production. The key technology for hydrogen production from water electrolysis is to prepare highly efficient catalytic, stable and durable electrodes, which are used to reduce the overpotential of the hydrogen evolution reaction and the oxygen evolution reaction of electrolyzed water. The main strategies for preparing catalytic electrodes include: (i) choosing cheap, large specific surface area and stable base materials, (ii) modulating the intrinsic activity of the catalytic material through elemental doping and lattice changes, and (iii) adjusting the morphology and structure to increase the catalytic activity. Based on these findings, herein, we review the recent work in the field of hydrogen production by water electrolysis, introduce the preparation of catalytic electrodes based on nickel foam, carbon cloth and new flexible materials, and summarize the catalytic performance of metal oxides, phosphides, sulfides and nitrides in the hydrogen evolution and oxygen evolution reactions. Secondly, parameters such as the overpotential, Tafel slope, active site, turnover frequency, and stability are used as indicators to measure the performance of catalytic electrode materials. Finally, taking the material cost of the catalytic electrode as a reference, the successful preparations are comprehensively compared. The overall aim is to shed some light on the exploration of high-efficiency and economical electrodes in energy chemistry and also demonstrate that there is still room for discovering new combinations of electrodes including base materials, composition lattice changes and morphologies.
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Affiliation(s)
- Dongxue Yao
- University of Shanghai for Science and Technology, Shanghai 200093, P. R. China.
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29
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Ma J, Gong S, He Y, Gao W, Hao W, Lan X. Effects of oral sialic acid on gut development, liver function and gut microbiota in mice. Lett Appl Microbiol 2021; 73:20-25. [PMID: 33386625 DOI: 10.1111/lam.13447] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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: 12/09/2020] [Revised: 12/27/2020] [Accepted: 12/28/2020] [Indexed: 12/27/2022]
Abstract
Sialic acid (N-acetylneuraminic acid), a 9-carbon monosaccharide, has been widely studied in immunology, oncology and neurology. However, the effects of sialic acid on organ and intestinal development, liver function and gut microbiota were rarely studied. In this study, we found that oral sialic acid tended to increase the relative weight of liver and decreased the serum aspartate aminotransferase (GPT) activity. In addition, sialic acid treatment markedly reduced gut villus length, depth, the ratio of villus length/depth (L/D), areas, width and the number of goblet cells. Furthermore, gut microbes were changed in response to oral sialic acid, such as Staphylococcus lentus, Corynebacterium stationis, Corynebacterium urealyticum, Jeotgalibaca sp_PTS2502, Ignatzschineria indica, Sporosarcina pasteurii, Sporosarcina sp_HW10C2, Facklamia tabacinasalis, Oblitimonas alkaliphila, Erysipelatoclostridium ramosum, Blautia sp_YL58, Bacteroids thetaiotaomicron, Morganella morganii, Clostridioides difficile, Helicobacter tryphlonius, Clostridium sp_Clone47, Alistipes finegoldii, [pseudomonas]_geniculata and Pseudomonas parafulva at the species level. In conclusion, oral sialic acid altered the intestinal pathological state and microbial compositions, and the effect of sialic acid on host health should be further studied.
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Affiliation(s)
- J Ma
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - S Gong
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - Y He
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - W Gao
- Animal Husbandry and Aquatic Affairs Center of Shimen County, Changde, Hunan, China
| | - W Hao
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - X Lan
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
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30
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Jia C, Wu H, Luo K, Hao W, Wang S, Huang M. Magnetic Silica Nanosystems With NIR-Responsive and Redox Reaction Capacity for Drug Delivery and Tumor Therapy. Front Chem 2020; 8:567652. [PMID: 33195055 PMCID: PMC7643033 DOI: 10.3389/fchem.2020.567652] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 09/01/2020] [Indexed: 11/13/2022] Open
Abstract
In recent years, more and more researches have focused on tumor photothermal therapy and chemodynamic therapy. In this study, we prepared a multifunctional nanomaterial with potential applications in the above area. The Fe3O4 nanoparticles were synthesized with suitable size and uniformity and then coated with mesoporous silica and polydopamine. The unique core-shell structure not only improves the drug loading of the magnetic nanomaterials, but also produces high photothermal conversion efficiency. Furthermore, the reducibility of polydopamine was found to be able to reduce Fe3+ to Fe2+ and thus promote the production of hydroxyl radicals that can kill the tumor cells based on the Fenton reaction. The magnetic nanomaterials are capable of simultaneously combining photothermal and chemodynamic therapy and permit the efficient treatment for tumors in the future.
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Affiliation(s)
- Chengzheng Jia
- College of Science, University of Shanghai for Science and Technology, Shanghai, China
| | - Hang Wu
- Department of General Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Keyi Luo
- College of Science, University of Shanghai for Science and Technology, Shanghai, China
| | - Weiju Hao
- College of Science, University of Shanghai for Science and Technology, Shanghai, China
| | - Shige Wang
- College of Science, University of Shanghai for Science and Technology, Shanghai, China
| | - Mingxian Huang
- College of Science, University of Shanghai for Science and Technology, Shanghai, China
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31
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Hao W, Li H, Liu S, Xia L, Mou E, Yu M. 9P Survival status of elderly women with HR+ early breast cancer: An analysis of SEER database. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.10.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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32
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Hao W, Liu HZ, Zhou LG, Sun YJ, Su H, Ni JQ, He T, Shi P, Wang X. MiR-122-3p regulates the osteogenic differentiation of mouse adipose-derived stem cells via Wnt/β catenin signaling pathway. Eur Rev Med Pharmacol Sci 2020; 23:3892-3898. [PMID: 31115017 DOI: 10.26355/eurrev_201905_17817] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To explore the regulatory mechanism of micro-ribonucleic acid (miR)-122-3p in the osteogenic differentiation of mouse adipose-derived stem cells (mADSCs). MATERIALS AND METHODS The regulatory mechanism of miR-122-3p in the osteogenic differentiation of mesenchymal stem cells was investigated through its overexpression and knockdown. RESULTS The overexpression of miR-122-3p inhibited the osteogenic differentiation of mADSCs. On the contrary, its knockdown promoted the osteogenic differentiation of mADSCs. The further study on the molecular mechanism of miR-122-3p regulating mADSCs' osteogenic differentiation showed that the overexpression of miR-122-3p could activate the Wingless and int-1 (WNT)/β-catenin signaling pathway, but the knockdown of miR-122-3p could repress this signaling pathway. CONCLUSIONS MiR-122-3p influences the osteogenic differentiation of mADSCs by modulating the WNT/β-catenin signaling pathway.
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Affiliation(s)
- W Hao
- Department of Orthopaedics and Traumatology, Yantai Yuhuangding Hospital, Yantai, China.
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33
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Xiaojun Z, Chan W, Hao W, Fang F, Wei X. 0727 Study Onthe Effect Of Obstructive Sleep Apnea-hypopnea Syndrome Onperioperative Management Inendoscopic Sinussurgerypatients. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.723] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
To determine the frequency of undiagnosed OSA patients in patients received endoscopic sinus surgery (ESS) and to investigate the effect of OSA on the perioperative management in those patients.
Methods
308 patients undergoing ESS from 2017-2019 were enrolled. The patients were divided into two groups according to whether OSA was combined. STOP-Bang questionnaire scoring system was used to classify patients into high risk and low risk for OSA. The differences between perioperative management and complications between the two groups were compared.
Results
308 consecutive cases were included, 46 cases (14.9%) combined with OSA and 108 cases (35.0%) were at high risk of OSA. OSA patients have higher morbidity of hypertension (OR, 2.05; CI, 1.07-3.92; P=0.03), hyperlipidemia (OR, 2.19; CI, 1.06- 4.51; P=0.03), longer hospitalization time(7.0±2.7 vs. 5.4±3.6, P≤0.01) and higher incidence of intubation difficulties (OR, 3.74; CI,1.39-10.1; P=0.01). Patients at high risk of OSA also had increased rates of hypertension, hyperlipidemia, coronary heart disease and post-operative cardiovascular and respiratory complications.
Conclusion
OSA or high scores of STOP-Bang are associated with increased perioperative complications in ESS patients. Preoperative OSA screening should be strengthened to improve the safety and prognosis of ESS surgery.
Support
National Natural Science Foundation of China under Grant [number 81670903]; and Beijing Municipal Administration of Hospitals Ascent Plan under Grant [number DFL20150602]
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Affiliation(s)
- Z Xiaojun
- Beijing Anzhen Hospital, Beijing, CHINA
| | - W Chan
- Beijing Anzhen Hospital, Beijing, CHINA
| | - W Hao
- Beijing Anzhen Hospital, Beijing, CHINA
| | - F Fang
- Beijing Anzhen Hospital, Beijing, CHINA
| | - X Wei
- Beijing Anzhen Hospital, Beijing, CHINA
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34
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Affiliation(s)
- S. Zhai
- Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET) Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), School of Environmental Science and Engineering, Nanjing University of Information Science and Technology 219 Ningliu Road Nanjing 210044 China
| | - X. Yang
- Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET) Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), School of Environmental Science and Engineering, Nanjing University of Information Science and Technology 219 Ningliu Road Nanjing 210044 China
| | - S. Liang
- Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET) Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), School of Environmental Science and Engineering, Nanjing University of Information Science and Technology 219 Ningliu Road Nanjing 210044 China
| | - W. Hao
- Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET) Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), School of Environmental Science and Engineering, Nanjing University of Information Science and Technology 219 Ningliu Road Nanjing 210044 China
| | - F. Teng
- Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET) Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), School of Environmental Science and Engineering, Nanjing University of Information Science and Technology 219 Ningliu Road Nanjing 210044 China
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35
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Hao W, Bahnson HT, Speake C, Cerosaletti K, Greenbaum CJ. In-vivo assessment of T cell kinetics in individuals at risk for type 1 diabetes. Clin Exp Immunol 2019; 199:50-55. [PMID: 31557315 DOI: 10.1111/cei.13375] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/23/2019] [Indexed: 11/28/2022] Open
Abstract
We previously assessed the kinetics of T cell turnover in vivo by labeling cells with 2 H-H2 O over 42 days in individuals with type 1 diabetes (T1D) and demonstrated an increased turnover of CD4 memory T cells. We have now tested T cell turnover in individuals at risk for T1D using a 3-4-day labeling protocol with 2 H-glucose. We studied 30 relatives with T1D with and without autoantibodies, and 10 healthy controls. Peripheral blood mononuclear cells (PBMC) were flow-sorted into T cell subsets of interest; 2 H-DNA enrichment was measured by mass spectrometry and in-vivo turnover was calculated as maximum fractional enrichment of deuterated adenosine (Fmax ). Among CD4+ cells, Fmax was highest in regulatory T cells (Treg ), followed by effector and central memory T cells and lowest in naive cells. Similarly, CD8+ central and effector memory T cells had a higher turnover than CD8+ terminally differentiated effector memory T cells (TEMRA) and CD8+ -naive T cells. Relatives as a group showed significantly increased Treg turnover by Fmax compared to controls (1·733 ± 0·6784% versus 1·062 ± 0·3787%, P = 0·004), suggesting pre-existing immune dysfunction within families with T1D. However, there was no significant difference in Fmax between groups according to autoantibody or glucose tolerance status. Repeat testing in 20 subjects 1 year later demonstrated relatively higher within-subject compared to between-subject variability for the measurement of Fmax in various T cell subsets. The short labeling protocol with 2 H-glucose should be applied in the context of a clinical trial in which the therapy is expected to have large effects on T cell turnover.
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Affiliation(s)
- W Hao
- Diabetes Clinical Research Program, Benaroya Research Institute at Virginia Mason, Seattle, WA, USA
| | - H T Bahnson
- Diabetes Clinical Research Program, Benaroya Research Institute at Virginia Mason, Seattle, WA, USA
| | - C Speake
- Diabetes Clinical Research Program, Benaroya Research Institute at Virginia Mason, Seattle, WA, USA
| | - K Cerosaletti
- Translational Research Program, Benaroya Research Institute at Virginia Mason, Seattle, WA, USA
| | - C J Greenbaum
- Diabetes Clinical Research Program, Benaroya Research Institute at Virginia Mason, Seattle, WA, USA
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Mei YY, Hai TJ, Wei L, Xiang H, Hao W, Ming ZX, An LX. Abstract P1-18-03: Phase I trial to assess the safety, pharmacokinetics and pharmacodynamics of receptor activator of nuclear factor-κB ligand inhibitor (TK006) in patients with bone metastases from breast cancer. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p1-18-03] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background
Within the bone microenvironment, tumor cells secrete factors that stimulate osteoblasts to express and secrete receptor activator of nuclear factor-κB ligand (RANKL), which binds to its receptor RANK on the surface of osteoclasts, thus enhancing the osteoclast-mediated bone resorption and promoting skeletal complications.TK006 is a fully human monoclonal antibody that binds and inhibits RANKL, thus inhibiting osteoclast-mediated bone destruction.
Objective
To investigate the safety, pharmacokinetics and pharmacodynamics of TK006 in patients with bone metastases from breast cancer.
Patients and methods
In this dose-escalating study, patients were sequentially enrolled into 60 mg, 120 mg, 180 mg single-dosing and 120 multiple-dosing cohorts. Before making dose escalation decision, the safety of TK006 during the 14-day period after dosing in the prior cohort must be confirmed. In the three single-dosing cohorts, patients were followed up for 16 weeks after dosing. In the 120 mg multiple-dosing cohort, patents were treated with 120 mg TK006 every 4 weeks for 3 times totally, and followed up for 20 weeks after the first dosing. The primary outcome was safety profile, and the secondary outcomes were pharmacokinetics, pharmacodynamics and immunogenicity. Pharmacodynamics was measured by level of serum bone alkaline phosphatase (BALP) and urine creatinine corrected cross-linked N-telopeptides of type I collagen (uNTX/Cr).
Patients aged 18 to 65 years with breast cancer related bone metastasis were eligible. It was planned to enroll 10 subjects in each cohort for a total sample size of 40 subjects.
Result
As of May 24 2018, the common adverse events (AEs) related to treatment (≥10%) included: hypocalcemia (25.0%), limbs pain (20.0%), gamma-glutamyl transferase increased (17.5%), lactate dehydrogenase increased (12.5%), alpha-hydroxybutyric dehydrogenase increased (12.5%), aspertate aminotransferase increased (12.5%), alanine aminotransferase (10.0%),osphyalgia (10.0%) toothache (10.0%) and hypertriglyceridemia (10%). Most adverse reactions were mild or moderate except one case of grade 3 hypertriglyceridemia and two cases of grade 3 gamma-glutamyl transferase increasement. No esteonecrosis of the jaw or treatment-related SAE was reported.
In the 60 mg single-dosing cohort, a significant reduction in median uNTX/Cr was observed as early as day 1, the nadir of median uNTX/Cr was reach at day 28 and started to return towards the baseline level at day 112 (Table 1).
Only modest decreasing from baseline in median bone-specific alkaline phosphatase was observed.
Table 1.Effects of 60 mg TK006 therapy on bone turnover markers uNTX/Cr, % change from baseline, medianBALP , % change from baseline, medianD1-38.6-4.7D7-63.01.7D14-55.30.2D28-69.2-0.2D56-57.9-12.1D84-33.4-0.4D1121.3-18.7
Ostalgia was measured by visual analogue scale (VAS). In the 60 mg single-dosing cohort, scores were reduced to 2 from 5 and 3 in two patients individually. No increasing in pain was observed in the remaining 8 patients.
Conclusion
These results suggested a potential therapeutic role for TK006 in patients with bone metastases from breast cancer.
Citation Format: Mei YY, Hai TJ, Wei L, Xiang H, Hao W, Ming ZX, An LX. Phase I trial to assess the safety, pharmacokinetics and pharmacodynamics of receptor activator of nuclear factor-κB ligand inhibitor (TK006) in patients with bone metastases from breast cancer [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P1-18-03.
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Affiliation(s)
- YY Mei
- The First Affiliated Hospital With Nanjing Medical University, Nanjing, Jiang Su, China
| | - TJ Hai
- The First Affiliated Hospital With Nanjing Medical University, Nanjing, Jiang Su, China
| | - L Wei
- The First Affiliated Hospital With Nanjing Medical University, Nanjing, Jiang Su, China
| | - H Xiang
- The First Affiliated Hospital With Nanjing Medical University, Nanjing, Jiang Su, China
| | - W Hao
- The First Affiliated Hospital With Nanjing Medical University, Nanjing, Jiang Su, China
| | - ZX Ming
- The First Affiliated Hospital With Nanjing Medical University, Nanjing, Jiang Su, China
| | - LX An
- The First Affiliated Hospital With Nanjing Medical University, Nanjing, Jiang Su, China
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Cai JF, Wang W, Hao W, Sun ZJ, Su LL, Li X, Zheng X, Zhang XD. Meta-analysis of Early Versus Late Ureteric Stent Removal After Kidney Transplantation. Transplant Proc 2018; 50:3411-3415. [DOI: 10.1016/j.transproceed.2018.08.033] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Accepted: 08/29/2018] [Indexed: 12/13/2022]
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38
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Zhao GQ, Wang X, Fan JY, Gong W, Hao W, Zhou SH, Li AB, Guo RF, Shi H, Li ZX, Nie SP, Wei YX. [Association between hypothyroidism and sleep breathing disorders in patients with coronary heart disease]. Zhonghua Nei Ke Za Zhi 2018; 57:571-575. [PMID: 30060328 DOI: 10.3760/cma.j.issn.0578-1426.2018.08.007] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the association between hypothyroidism and sleep breathing disorders in patients with coronary heart disease (CHD). Methods: A total of 784 patients with CHD were consecutively enrolled at the Emergency & Critical Care Center of Beijing Anzhen Hospital from June 2015 to May 2017. According to thyroid function test results, patients were divided into hypothyroidism group (79 cases) and non-hypothyroidism group (705 cases). All patients had undergone sleep monitoring. The sleep apnea status was compared between the two groups. Multivariate logistic regression and linear regression models were used to analyze the association between hypothyroidism and sleep breathing disorders in patients with CHD. Results: The proportion of females, mean body weight and body mass index in the hypothyroidism group were higher than those in the non-hypothyroidism group [26.6% vs.16.2%, (78.6±11.6) kg vs. (75.7±12.0) kg, (27.7±3.2) kg/m(2) vs. (26.6±3.5) kg/m(2), all P<0.05]. Patients in hypothyroidism group had a decreased average oxygen saturation (SaO(2)) compared with patients in non-hypothyroidism group [ (93.2±2.9) % vs. (93.9±2.0) %, P=0.030]. In addition, events of hypoventilation in hypothyroidism group were significantly higher than those in non-hypothyroidism group[92.5 (45.8, 758.3) times vs. 68.0 (33.0, 125.0) times, P=0.013]. There were no significant differences in apnea hypopnea index, diagnosis of obstructive sleep apnea and other sleep breathing parameters between the two groups (P>0.05). A multiple linear regression analysis found that in patients with CHD, the correlation between hypothyroidism and average sleep SaO(2) was significant (β=-0.508, 95%CI -0.989--0.026, P=0.039). Conclusions: CHD patients with hypothyroidism had a lower sleep average SaO(2), and a higher sleep hypopnea events. There is a correlation between hypothyroidism and sleep hypoxia in patients with CHD. Clinical trial registration: clinicalTrials.gov, NCT03362385.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - S P Nie
- Emergency & Critical Care Center, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
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Shen Y, Zhang J, Hao W, Wang T, Liu J, Xie Y, Xu S, Liu H. Copolymer micelles function as pH-responsive nanocarriers to enhance the cytotoxicity of a HER2 aptamer in HER2-positive breast cancer cells. Int J Nanomedicine 2018; 13:537-553. [PMID: 29416334 PMCID: PMC5790103 DOI: 10.2147/ijn.s149942] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Efficient delivery of nucleic acids into target cells is crucial for nucleic acid-based therapies. Various nucleic acid delivery systems have been developed, each with its own advantages and limitations. We previously developed a nanoparticle-based delivery system for small chemical drugs using pH-responsive PEG8-PDPA100-PEG8 polymer micelles as carriers. In this study, we extend the application of these pH-responsive micelle-like nanoparticles (MNPs) to deliver oligonucleotides. We demonstrate that the MNPs efficiently encapsulate and deliver oligonucleotides of different lengths (20-100 nt) into cells. The cargo oligonucleotides are rapidly released at pH 5.0. We prepared MNPs carrying a Texas red-fluorescently labeled anti-human epidermal growth factor receptor 2 (HER2) aptamer (HApt). Compared to free HApt, the HApt-MNPs resulted in significantly better cellular uptake, reduced cell viability, and increased apoptosis in SKBR3 breast cancer cells, which overexpress HER2. Moreover, HApt-MNPs were significantly less cytotoxic to MCF7 breast cancer cells, which express low levels of HER2. After cellular uptake, HApt-MNPs mainly accumulated in lysosomes; inhibition of lysosomal activity using bafilomycin A1 and LysoTracker Red staining confirmed that lysosomal activity and low pH were required for HApt-MNP accumulation and release. Furthermore, HER2 protein expression declined significantly following treatment with HApt-MNPs in SKBR3 cells, indicating that HApt-induced translocation of HER2 to lysosomes exerted a potent cytotoxic effect by altering signaling downstream of HER2. In conclusion, this pH-responsive and lysosome-targeting nanoparticle system can efficiently deliver oligonucleotides to specific target cells and has significant potential for nucleic acid-based cancer therapies.
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Affiliation(s)
- Yinxing Shen
- State Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering, East China University of Science and Technology.,Department of Medical Microbiology and Parasitology, Key Laboratory of Medical Molecular Virology of MOE/MOH, School of Basic Medical Sciences, Fudan University, Shanghai, People's Republic of China
| | - Junqi Zhang
- Department of Medical Microbiology and Parasitology, Key Laboratory of Medical Molecular Virology of MOE/MOH, School of Basic Medical Sciences, Fudan University, Shanghai, People's Republic of China
| | - Weiju Hao
- State Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering, East China University of Science and Technology
| | - Tong Wang
- State Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering, East China University of Science and Technology
| | - Jing Liu
- Department of Medical Microbiology and Parasitology, Key Laboratory of Medical Molecular Virology of MOE/MOH, School of Basic Medical Sciences, Fudan University, Shanghai, People's Republic of China
| | - Youhua Xie
- Department of Medical Microbiology and Parasitology, Key Laboratory of Medical Molecular Virology of MOE/MOH, School of Basic Medical Sciences, Fudan University, Shanghai, People's Republic of China
| | - Shouhong Xu
- State Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering, East China University of Science and Technology
| | - Honglai Liu
- State Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering, East China University of Science and Technology
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Wang L, Ren L, Mitchell D, Casillas-Garcia G, Ren W, Ma C, Xu XX, Wen S, Wang F, Zhou J, Xu X, Hao W, Dou SX, Du Y. Enhanced energy transfer in heterogeneous nanocrystals for near infrared upconversion photocurrent generation. Nanoscale 2017; 9:18661-18667. [PMID: 29164217 DOI: 10.1039/c7nr07010a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The key to produce inorganic heterogeneous nanostructures, and to integrate multiple functionalities, is to enhance or at least retain the functionalities of different components of materials. However, this ideal scenario is often deteriorated at the interface of the heterogeneous nanostructures due to lattice mismatches, resulting in downgraded performance in most hybrid nanomaterials. Here, we report that there is a narrow window in controlling temperature in a Lewis acid-base reaction process to facilitate epitaxial alignment during the synthesis of hybrid nanomaterials. We demonstrate a perfectly fused NaYF4:Yb,Tm@ZnO heterogeneous nanostructure, in which the semiconductor ZnO shell can be epitaxially grown onto lanthanide-doped upconversion nanoparticles. By achieving a matched crystal lattice, the interface defects and crystalline grain boundaries are minimized to enable more efficient energy transfer from the upconversion nanoparticles to the semiconductor, resulting in both enhanced upconversion luminescence intensity and superior photoelectrochemical properties. This strategy provides an outstanding approach to endow lanthanide-doped upconversion nanoparticles with versatile properties.
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Affiliation(s)
- L Wang
- Institute for Superconducting and Electronic Materials (ISEM), Australian Institute for Innovative Materials (AIIM), University of Wollongong, Wollongong, NSW 2500, Australia.
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41
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Yonggang H, Jing Y, Ping W, Guodong G, Chenxia M, Xiaojing X, Fangjie Z, Hao W. Forty-one cases of round ligament varicosities that are easily misdiagnosed as inguinal hernias. Hernia 2017; 21:901-904. [PMID: 28975424 DOI: 10.1007/s10029-017-1670-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 02/06/2017] [Accepted: 09/16/2017] [Indexed: 11/29/2022]
Abstract
PURPOSE To demonstrate the benefit and safety of conservative therapy for round ligament varicosities (RLVs) that are easily misdiagnosed as inguinal hernias. METHODS We retrospectively analyzed clinical materials of 41 consecutive cases of RLVs diagnosed by ultrasound in a single hospital from January 2011 to December 2015. Misdiagnosis rate, clinical and sonographic features, management after diagnosis and prognosis were recorded. RESULTS All forty-one cases were pregnant females in their second or third trimester. Twenty-eight cases were first misdiagnosed as inguinal hernias (68.3%). Thirty cases presented as reducible swelling in the inguinal area (73.2%), and twenty-five of which were painful (61.0%). Four cases only felt pain in the inguinal area without swelling (9.7%). Seven cases had no obvious discomfort (17.1%). All cases were diagnosed as RLVs by gray-scale and color Doppler ultrasonography and justified a wait-and-see strategy. Thirty-seven cases were followed until total recovery after delivery (follow-up rate 90.2%). Swelling with or without pain disappeared spontaneously postpartum. CONCLUSIONS RLVs are easily misdiagnosed as inguinal hernias and color Doppler of the inguinal area is the best examination for making the correct diagnosis. Conservative therapy for RLV is beneficial and safe when assured by color Doppler.
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Affiliation(s)
- H Yonggang
- Department of Hernia and Abdominal Wall Surgery, Hangzhou First People's Hospital, Hangzhou, China
| | - Y Jing
- Department of Hernia and Abdominal Wall Surgery, Hangzhou First People's Hospital, Hangzhou, China.
| | - W Ping
- Department of Hernia and Abdominal Wall Surgery, Hangzhou First People's Hospital, Hangzhou, China
| | - G Guodong
- Department of Hernia and Abdominal Wall Surgery, Hangzhou First People's Hospital, Hangzhou, China
| | - M Chenxia
- Department of Ultrasonography, Hangzhou First People's Hospital, Hangzhou, China
| | - X Xiaojing
- Department of Ultrasonography, Hangzhou First People's Hospital, Hangzhou, China
| | - Z Fangjie
- Department of Hernia and Abdominal Wall Surgery, Hangzhou First People's Hospital, Hangzhou, China
| | - W Hao
- Department of Hernia and Abdominal Wall Surgery, Hangzhou First People's Hospital, Hangzhou, China
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42
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Soomro MH, Shi R, She R, Yang Y, Wang T, Wu Q, Li H, Hao W. Molecular and structural changes related to hepatitis E virus antigen and its expression in testis inducing apoptosis in Mongolian gerbil model. J Viral Hepat 2017; 24:696-707. [PMID: 28182318 DOI: 10.1111/jvh.12690] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 01/19/2017] [Indexed: 02/06/2023]
Abstract
Hepatitis E virus (HEV) infection has been associated with a wide range of extrahepatic manifestations, so this study was designed to examine the effect and role of HEV on structural and molecular changes in the testicular tissues of Mongolian gerbils experimentally infected with swine HEV. HEV RNA was first detected in testis at 14 days post-inoculation and reached a peak between 28 and 42 days later with viral load between 3.12 and 6.23 logs/g by PCR assays. Changes including vacuolation, sloughing of germ cells, formation of multinuclear giant cells, degeneration, necrosis of tubules and damaged blood-testis barrier were observed through transmission electron microscopy. HEV ORF2 antigen was detected in the sperm cell cytoplasm along with decrease in relative protein of zonula occludens-1 through immunohistochemistry. HEV ORF3 antigen and ZO-1 protein were detectable by Western blotting. Lower (P<.05) serum testosterone and higher (P<.05) blood urea nitrogen level was observed in inoculated Mongolian gerbils. Likewise, increased (P<.05) germ cell apoptosis rate was detected with significant increased expression of Fas-L and Fas in HEV-inoculated groups at each time points. Up-regulation (P<.05 or P<.01) in mRNA level of Fas-L, Fas, Bax, Bcl-2 and caspase-3 was observed in HEV RNA-positive testes. Our study demonstrated that after experimental inoculation, HEV can be detected in testis tissues and viral proteins produce structural and molecular changes that in turn disrupt the blood-testis barrier and induce germ cell apoptosis.
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Affiliation(s)
- M H Soomro
- Laboratory of Animal Pathology and Public Health, College of Veterinary Medicine, China Agriculture University, Beijing, China.,Department of Parasitology, Faculty of Veterinary Sciences, Shaheed Benazir Bhutto University of Veterinary and Animal Sciences, Sakrand, Pakistan
| | - R Shi
- Laboratory of Animal Pathology and Public Health, College of Veterinary Medicine, China Agriculture University, Beijing, China
| | - R She
- Laboratory of Animal Pathology and Public Health, College of Veterinary Medicine, China Agriculture University, Beijing, China
| | - Y Yang
- Laboratory of Animal Pathology and Public Health, College of Veterinary Medicine, China Agriculture University, Beijing, China
| | - T Wang
- Laboratory of Animal Pathology and Public Health, College of Veterinary Medicine, China Agriculture University, Beijing, China
| | - Q Wu
- Laboratory of Animal Pathology and Public Health, College of Veterinary Medicine, China Agriculture University, Beijing, China
| | - H Li
- Laboratory of Animal Pathology and Public Health, College of Veterinary Medicine, China Agriculture University, Beijing, China
| | - W Hao
- Laboratory of Animal Pathology and Public Health, College of Veterinary Medicine, China Agriculture University, Beijing, China
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Hao W, Wang T, Liu D, Shang Y, Zhang J, Xu S, Liu H. Folate-conjugated pH-controllable fluorescent nanomicelles acting as tumor targetable drug carriers. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2255-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Hao W, Shen Y, Liu D, Shang Y, Zhang J, Xu S, Liu H. Dual-pH-sensitivity and tumour targeting core–shell particles for intracellular drug delivery. RSC Adv 2017. [DOI: 10.1039/c6ra25224a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The principal problem in the area of drug delivery is achieving better selectivity and controllability.
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Affiliation(s)
- Weiju Hao
- Key Laboratory for Advanced Materials
- College of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Yinxing Shen
- Key Laboratory for Advanced Materials
- College of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Danyang Liu
- Key Laboratory for Advanced Materials
- College of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Yazhuo Shang
- Key Laboratory for Advanced Materials
- College of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Junqi Zhang
- Key Laboratory of Medical Molecular Virology
- Ministry of Health and Ministry of Education
- School of Basic Medical Sciences
- Fudan University
- Shanghai 200032
| | - Shouhong Xu
- Key Laboratory for Advanced Materials
- College of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Honglai Liu
- Key Laboratory for Advanced Materials
- College of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
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Shi R, Soomro MH, She R, Yang Y, Wang T, Wu Q, Li H, Hao W. Evidence of Hepatitis E virus breaking through the blood-brain barrier and replicating in the central nervous system. J Viral Hepat 2016; 23:930-939. [PMID: 27329366 DOI: 10.1111/jvh.12557] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 05/03/2016] [Indexed: 12/12/2022]
Abstract
Neurologic dysfunctions such as Guillain-Barre' syndrome, encephalitis, meningitis and transverse myelitis occur frequently in patients with hepatitis E virus (HEV) infection, and this study was conducted to better characterize the role of HEV in the pathogenesis of neurologic disorders. Genotype 4 strain of swine HEV was used to inoculate Mongolian gerbils. Reverse transcription-nested polymerase chain reaction (RT-nPCR), ELISA, histopathology, ultrastructural pathology and enzyme immunohistochemistry method were conducted to investigate the replication and localization of HEV in the central nervous system (CNS) and the consequent pathological changes. Both positive- and negative-strand HEV RNA was detectable in brain and spinal cord from 7 to 28 dpi (days postinoculation) via RT-nPCR. Various pathological changes such as perineural invasion, neuron necrosis, microglia nodule, lymphocyte infiltration, perivascular cuff and myelin degeneration were observed in HEV-positive brains and spinal cords. Immunohistochemical (IHC) staining targeting on HEV ORF2 protein revealed positive signals concentrated mainly in the cytoplasm of neuron, ependymal epithelium and choroid plexus area. Positive area density of ZO-1 (zonula occludens-1) in brain of HEV-positive gerbils decreased, while the GFAP (glial fibrillary acidic protein) expression was upregulated compared with control groups. These results provide strong evidence that HEV is able to damage the blood-brain barrier (BBB), replicate in brain and spinal cord, and hammer the causative role of HEV in the pathogenesis of neurologic disorders.
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Affiliation(s)
- R Shi
- Laboratory of Animal Pathology and Public Health, Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, China Agriculture University, Beijing, China
| | - M H Soomro
- Laboratory of Animal Pathology and Public Health, Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, China Agriculture University, Beijing, China
| | - R She
- Laboratory of Animal Pathology and Public Health, Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, China Agriculture University, Beijing, China.
| | - Y Yang
- Laboratory of Animal Pathology and Public Health, Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, China Agriculture University, Beijing, China
| | - T Wang
- Laboratory of Animal Pathology and Public Health, Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, China Agriculture University, Beijing, China
| | - Q Wu
- Laboratory of Animal Pathology and Public Health, Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, China Agriculture University, Beijing, China
| | - H Li
- Laboratory of Animal Pathology and Public Health, Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, China Agriculture University, Beijing, China
| | - W Hao
- Laboratory of Animal Pathology and Public Health, Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, China Agriculture University, Beijing, China
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Abstract
Abstract
The curing stress and deformation of epoxy resin and aramid fiber/epoxy composites was measured using Digital Gradient Sensing (DGS) technique. First, the working principle of the DGS method was explained, and the governing equations were derived based on angular deflections of light rays. Then the angle deflection of light rays due to curing stress of epoxy resin was measured, and the effect of the fiber bundle and aramid fiber fabric on the stress distribution during formation was analyzed. The experimental results show that angular deflections of light rays can be related to nonuniform distribution of curing stress in epoxy. The fiber bundles and fabric style have important effects on the curing stress distribution. These results play an important role for predicting curing stress and deformation of fiber reinforced composites.
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Affiliation(s)
- W. Hao
- Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation , Beijing Institute of Aeronautical Materials, Beijing , PRC
| | - X. Chen
- Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation , Beijing Institute of Aeronautical Materials, Beijing , PRC
| | - Y. Yuan
- Department of Engineering Mechanics , Applied Mechanics Lab, Tsinghua University, Beijing , PRC
| | - Y. Ma
- Department of Engineering Mechanics , Applied Mechanics Lab, Tsinghua University, Beijing , PRC
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Abstract
We prepared pH-sensitive polymeric micelles which were used as nano-carriers and exhibited a high loading capacity and pH-triggered release of DOX.
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Affiliation(s)
- Weiju Hao
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai
- PR China
| | - Danyang Liu
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai
- PR China
| | - Yazhuo Shang
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai
- PR China
| | - Junqi Zhang
- Key Laboratory of Medical Molecular Virology (Ministry of Health and Ministry of Education)
- Department of Medical Microbiology and Parasitology
- School of Basic Medical Sciences
- Fudan University
- Shanghai 200032
| | - Shouhong Xu
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai
- PR China
| | - Honglai Liu
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai
- PR China
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Abstract
Eigenvalues of fourth-order elliptic operators feature prominently in stability analysis of elastic structures. This paper considers out-of-plane modes of vibration of a thin elastic plate perforated by a collection of small clamped patches. As the radius of each patch shrinks to zero, a
point constraint eigenvalue problem
is derived in which each patch is replaced by a homogeneous Dirichlet condition at its centre. The limiting problem is consequently not the eigenvalue problem with no patches, but a new type of spectral problem. The discrepancy between the eigenvalues of the patch-free and point constraint problems is calculated. The dependence of the point constraint eigenvalues on the location(s) of clamping is studied numerically using techniques from numerical algebraic geometry. The vibrational frequencies are found to depend very sensitively on the number and centre(s) of the clamped patches. For a range of number of punctures, we find spatial clamping patterns that correspond to local maxima of the base vibrational frequency of the plate.
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Affiliation(s)
- A. E. Lindsay
- Department of Applied and Computational Math and Statistics, University of Notre Dame, Notre Dame, IN 46617, USA
| | - W. Hao
- Mathematical BioSciences Institute, Ohio State University, 380 Jennings Hall, OH 43210, USA
| | - A. J. Sommese
- Department of Applied and Computational Math and Statistics, University of Notre Dame, Notre Dame, IN 46617, USA
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Adaskaveg JE, Hao W, Förster H. Postharvest Strategies for Managing Phytophthora Brown Rot of Citrus using Potassium Phosphite in Combination with Heat Treatments. Plant Dis 2015; 99:1477-1482. [PMID: 30695947 DOI: 10.1094/pdis-01-15-0040-re] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Phytophthora brown rot, caused by several species of Phytophthora, is an economically important disease of citrus in areas with rainfall during the late stages of fruit development. Recent export restrictions of California orange fruit to China due to the presence of brown rot caused by the quarantine pathogen Phytophthora syringae have mandated more rigorous disease management. We evaluated postharvest applications with the phosphonate fungicide potassium phosphite in combination with heat treatments. In timing studies, potassium phosphite at 1,500 μg/ml was most effective when applied within 18 h after inoculation of orange fruit with P. citrophthora, reducing the incidence of decay by >96% as compared with the control. Potassium phosphite was also highly effective in inoculations with P. syringae. Heated water treatments at 60°C were consistently and highly effective in reducing the incidence of brown rot after inoculation with P. citrophthora, whereas treatments at 55 or 50°C were more variable and generally less effective. Two-stage treatments of fruit were conducted in the laboratory to simulate current packinghouse practices and to evaluate any interaction of the efficacy of potassium phosphite with treatments of two commonly used postharvest fungicides (i.e., imazalil and thiabendazole [TBZ]) or a postharvest carnauba-based fruit coating. In these studies, an aqueous imazalil-potassium phosphite (2,000 μg/ml) dip at ambient temperature that was followed by a spray treatment of imazalil and TBZ prepared in fruit coating significantly reduced the incidence of brown rot from the control. When the aqueous dip was applied at 54°C, brown rot developed in only 1% of the fruit as compared with 76% in the water control. The efficacy of potassium phosphite was also demonstrated in commercial packinghouse treatments. Based on our research, this fungicide was registered for postharvest use against brown rot of citrus and is exempt from tolerance in the United States and many other countries.
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Affiliation(s)
- J E Adaskaveg
- Department of Plant Pathology and Microbiology, University of California, Riverside
| | - W Hao
- Department of Plant Pathology and Microbiology, University of California, Riverside
| | - H Förster
- Department of Plant Pathology and Microbiology, University of California, Riverside
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