1
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Cheng K, Huang W, Gong X, Deng C. Dual substitution of host lattice ions to enhance the luminescence properties of Zn 2TiO 4:Cr 3+ phosphor. LUMINESCENCE 2024; 39:e4730. [PMID: 38548694 DOI: 10.1002/bio.4730] [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] [Received: 11/13/2023] [Revised: 01/19/2024] [Accepted: 02/28/2024] [Indexed: 04/02/2024]
Abstract
Near-infrared light sources have potential applications in many fields. Cr3+ is a good luminescence centre to prepare near-infrared phosphors. Improving the performance of existing near-infrared luminescent materials has indeed attracted great interest from researchers. The luminescence properties of Zn2TiO4:Cr3+ were improved by crystal field engineering strategies. Zn2+-Ti4+ was partially replaced using a Li+-Nb5+ ion pair based on the Zn2TiO4:Cr3+ phosphors. Luminescence Cr3+-activated luminescent materials are sensitive to changes in the local crystal structure and crystal field environment. Doping of Li+-Nb5+ increased the luminescence intensity up to 2.7 times that of the undoped sample. Also, the thermal stability of the phosphor was greatly increased by the replacement of Li+-Nb5+.
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Affiliation(s)
- Kang Cheng
- Key Laboratory of Functional Composite Materials of Guizhou Province, College of Big Data and Information Engineering, Guizhou University, Guiyang, Guizhou, China
| | - Weichao Huang
- Key Laboratory of Functional Composite Materials of Guizhou Province, College of Big Data and Information Engineering, Guizhou University, Guiyang, Guizhou, China
| | - Xinyong Gong
- Key Laboratory of Functional Composite Materials of Guizhou Province, College of Big Data and Information Engineering, Guizhou University, Guiyang, Guizhou, China
| | - Chaoyong Deng
- Key Laboratory of Functional Composite Materials of Guizhou Province, College of Big Data and Information Engineering, Guizhou University, Guiyang, Guizhou, China
- School of Electronics and Information Engineering, Guiyang University, Guiyang, China
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2
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Liu Q, Zuo M, Song Y, He S, Huang J, Chen Y. Bioinspired total synthesis and biological activity of Pegaharine A. Pest Manag Sci 2024; 80:1372-1381. [PMID: 37926482 DOI: 10.1002/ps.7868] [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: 06/22/2023] [Revised: 10/22/2023] [Accepted: 11/06/2023] [Indexed: 11/07/2023]
Abstract
BACKGROUND Phytopathogens cause various diseases by parasitizing crops, reducing crop yield and resulting in substantial economic losses in agricultural production. A novel type isolated from the perennial herbaceous Peganum harmala L. seeds, β-carboline alkaloids pegaharine A (PA), has become a hot topic in developing plant-originated green pesticides owing to their significant physiological activities. RESULTS A scalable bioinspired total synthesis of PA is accomplished in the present work. The systematical biological assay study showed that PA exhibited moderate inhibitory activity against nine tested plant pathogenic fungi and showed significant inhibitory activity in vitro against the three tested plant pathogenic bacteria. Most noteworthy is the inhibitory rates of PA on Xanthomonas oryzae pv. oryzae (Xoo), X. oryzae pv. oryzicola (Xoc) and X. axonopodis pv. citri (Xac) of 93.6%, 92.1% and 86.1%, respectively, which are better than the control drug, bismerthiazol (63.4%, 61.2% and 53.7% at 100 μg mL-1 concentration). Furthermore, the EC50 value of PA against Xoo, Xoc and Xac was 52.2, 60.0 and 65.1 μg mL-1 , respectively, superior to 72.9, 64.2 and 70.1 μg mL-1 of the control drug. Moreover, the anti-Xoo mechanistic studies revealed that PA exerted its antibacterial effects by increasing the permeability of the bacterial membrane, reducing the extracellular polysaccharide content and inducing morphological changes in bacterial cells. CONCLUSION A novel β-carboline alkaloid, PA, was prepared by biomimetic total synthesis. Its significant antibacterial activity was closely related to the permeation of bacterial cell membranes, which was confirmed by anti-Xoo mechanistic studies. More importantly, the structure could be regarded as a model for developing novel bactericides. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Qichang Liu
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, China
| | - Mei Zuo
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
| | - Yi Song
- School of Pharmaceutical Sciences, and Guizhou Engineering Laboratory for Synthetic Drugs, Guizhou University, Guiyang, China
| | - Shuzhong He
- School of Pharmaceutical Sciences, and Guizhou Engineering Laboratory for Synthetic Drugs, Guizhou University, Guiyang, China
| | - Jian Huang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
| | - Yang Chen
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, China
- School of Pharmaceutical Sciences, and Guizhou Engineering Laboratory for Synthetic Drugs, Guizhou University, Guiyang, China
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Zhang M, Xiao Q, Li Y, Tian Y, Zheng J, Zhang J. Exploration of exogenous chlorogenic acid as a potential plant stimulant: enhancing physiochemical properties in Lonicera japonica. Physiol Mol Biol Plants 2024; 30:453-466. [PMID: 38633274 PMCID: PMC11018593 DOI: 10.1007/s12298-024-01435-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 01/05/2024] [Accepted: 03/08/2024] [Indexed: 04/19/2024]
Abstract
In this study, we applied exogenous chlorogenic acid (CGA) to Lonicera japonica (L. japonica) leaves via foliar sprays every Monday, Wednesday, and Friday for a period of 12 months. Our continuous monitoring over this period revealed a consistent increase in flavonoid levels from the second to the tenth month following the commencement of CGA treatment. This was accompanied by a notable upregulation in the expression of four secondary metabolite-related enzyme genes: LjPAL1, LjPAL2, LjPAL3, and LjISY1. Concurrently, there was a significant enhancement in the total activity of the enzyme phenylalanine ammonia-lyase. The total antioxidant capacity of the plants also showed a marked increase from the third to the seventh month post-treatment initiation, subsequently stabilizing. This increase was also reflected in the elevated activities of key antioxidant enzymes: peroxidase, polyphenol oxidase, and superoxide dismutase. Furthermore, the treatment notably enhanced various indicators of nutrient growth, such as total protein content, total sugar content, and leaf area. Notably, the relative expression of LjTF1, a kind of BZIP transcription factor gene known for its extensive regulatory effects, showed a significant and sustained increase after the start of exogenous CGA treatment. Subsequent metabolomic analysis revealed significant changes in L. japonica metabolites. Specifically, 172 differentially expressed metabolites (DEMs) showed a notable increase (Fold > 1), predominantly in pathways related to nutrient metabolism such as carbohydrate, amino acid, and energy metabolism. Notably, some of the highly expressed DEMs (Fold > 4) are key antioxidants and medicinal components in L. japonica. The experimental findings were in alignment with the metabolomics analysis, indicating that exogenous CGA can act as a stimulant for L. japonica. It promotes the significant accumulation of certain secondary metabolites, enhances nutritive growth, and boosts the plant's total antioxidant capacity. Supplementary Information The online version contains supplementary material available at 10.1007/s12298-024-01435-8.
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Affiliation(s)
- Mian Zhang
- Guizhou University of Traditional Chinese Medicine, Guiyang, 550025 China
| | - Qiaoqiao Xiao
- Guizhou University of Traditional Chinese Medicine, Guiyang, 550025 China
| | - Yulong Li
- College of Life Sciences, Shaanxi Normal University, Xi’an, 710119 China
| | - Yuan Tian
- Guizhou University of Traditional Chinese Medicine, Guiyang, 550025 China
| | - Jincheng Zheng
- Guizhou University of Traditional Chinese Medicine, Guiyang, 550025 China
| | - Jie Zhang
- Guizhou University of Traditional Chinese Medicine, Guiyang, 550025 China
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Wei BR, Zhao YJ, Cheng YF, Huang C, Zhang F. Helicobacter pylori infection and Parkinson's Disease: etiology, pathogenesis and levodopa bioavailability. Immun Ageing 2024; 21:1. [PMID: 38166953 PMCID: PMC10759355 DOI: 10.1186/s12979-023-00404-1] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Accepted: 12/11/2023] [Indexed: 01/05/2024]
Abstract
Parkinson's disease (PD), a neurodegenerative disorder with an unknown etiology, is primarily characterized by the degeneration of dopamine (DA) neurons. The prevalence of PD has experienced a significant surge in recent years. The unidentified etiology poses limitations to the development of effective therapeutic interventions for this condition. Helicobacter pylori (H. pylori) infection has affected approximately half of the global population. Mounting evidences suggest that H. pylori infection plays an important role in PD through various mechanisms. The autotoxin produced by H. pylori induces pro-inflammatory cytokines release, thereby facilitating the occurrence of central inflammation that leads to neuronal damage. Simultaneously, H. pylori disrupts the equilibrium of gastrointestinal microbiota with an overgrowth of bacteria in the small intestinal known as small intestinal bacterial overgrowth (SIBO). This dysbiosis of the gut flora influences the central nervous system (CNS) through microbiome-gut-brain axis. Moreover, SIBO hampers levodopa absorption and affects its therapeutic efficacy in the treatment of PD. Also, H. pylori promotes the production of defensins to regulate the permeability of the blood-brain barrier, facilitating the entry of harmful factors into the CNS. In addition, H. pylori has been found to induce gastroparesis, resulting in a prolonged transit time for levodopa to reach the small intestine. H. pylori may exploit levodopa to facilitate its own growth and proliferation, or it can inflict damage to the gastrointestinal mucosa, leading to gastrointestinal ulcers and impeding levodopa absorption. Here, this review focused on the role of H. pylori infection in PD from etiology, pathogenesis to levodopa bioavailability.
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Affiliation(s)
- Bang-Rong Wei
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education and Key Laboratory of Basic Pharmacology of Guizhou Province and Laboratory Animal Centre, Zunyi Medical University, Zunyi, Guizhou, China
| | - Yu-Jia Zhao
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education and Key Laboratory of Basic Pharmacology of Guizhou Province and Laboratory Animal Centre, Zunyi Medical University, Zunyi, Guizhou, China
| | - Yu-Feng Cheng
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education and Key Laboratory of Basic Pharmacology of Guizhou Province and Laboratory Animal Centre, Zunyi Medical University, Zunyi, Guizhou, China
| | - Chun Huang
- The Fifth People's Hospital of Chongqing, Chongqing, China
| | - Feng Zhang
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education and Key Laboratory of Basic Pharmacology of Guizhou Province and Laboratory Animal Centre, Zunyi Medical University, Zunyi, Guizhou, China.
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Zhao R, Xie H, Gong X, Sun X, Cao C. Neural Network-Based Adaptive Height Tracking Control of Active Air Suspension System with Magnetorheological Fluid Damper Subject to Uncertain Mass and Input Delay. Sensors (Basel) 2023; 24:156. [PMID: 38203018 PMCID: PMC10781208 DOI: 10.3390/s24010156] [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: 11/02/2023] [Revised: 12/14/2023] [Accepted: 12/20/2023] [Indexed: 01/12/2024]
Abstract
In this paper, we present a novel robust adaptive neural network-based control framework to address the ride height tracking control problem of active air suspension systems with magnetorheological fluid damper (MRD-AAS) subject to uncertain mass and time-varying input delay. First, a radial basis function neural network (RBFNN) approximator is designed to compensate for unmodeled dynamics of the MRD. Then, a projector-based estimator is developed to estimate uncertain parameter variation (sprung mass). Additionally, to deal with the effect of input delay, a time-delay compensator is integrated in the adaptive control law to enhance the transient response of MRD-AAS system. By introducing a Lyapunov-Krasovskii (LK) functional, both ride height tracking and estimator errors can robustly converge towards the neighborhood of the desired values, achieving uniform ultimate boundness. Finally, comparative simulation results based on a dynamic co-simulator built in AMESim 2021.2 and Matlab/Simulink 2019(b) are given to illustrate the validity of the proposed control framework, showing its effectiveness to operate ride height regulation with MRD-AAS systems accurately and reliably under random road excitations.
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Affiliation(s)
- Rongchen Zhao
- School of Mechanical and Electrical Engineering, Guizhou Normal University, Guiyang 550001, China; (R.Z.); (H.X.)
| | - Haifeng Xie
- School of Mechanical and Electrical Engineering, Guizhou Normal University, Guiyang 550001, China; (R.Z.); (H.X.)
| | - Xinle Gong
- School of Vehicle and Mobility, Tsinghua University, Beijing 10084, China;
| | - Xiaoqiang Sun
- Automotive Engineering Research Institute, Jiangsu University, Zhenjiang 212013, China;
| | - Chen Cao
- Research Institute of Highway, Ministry of Transport, Beijing 100088, China
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6
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Li J, Liang B, Zhang X, Yu Z. A Conservative Memristive Chaotic System with Extreme Multistability and Its Application in Image Encryption. Entropy (Basel) 2023; 25:1656. [PMID: 38136536 PMCID: PMC10742880 DOI: 10.3390/e25121656] [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: 10/16/2023] [Revised: 11/21/2023] [Accepted: 11/25/2023] [Indexed: 12/24/2023]
Abstract
In this work, a novel conservative memristive chaotic system is constructed based on a smooth memristor. In addition to generating multiple types of quasi-periodic trajectories within a small range of a single parameter, the amplitude of the system can be controlled by changing the initial values. Moreover, the proposed system exhibits nonlinear dynamic characteristics, involving extreme multistability behavior of isomorphic and isomeric attractors. Finally, the proposed system is implemented using STMicroelectronics 32 and applied to image encryption. The excellent encryption performance of the conservative chaotic system is proven by an average correlation coefficient of 0.0083 and an information entropy of 7.9993, which provides a reference for further research on conservative memristive chaotic systems in the field of image encryption.
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Affiliation(s)
- Jian Li
- College of Mathematics and Big Data, Guizhou Education University, Guiyang 550018, China; (J.L.); (Z.Y.)
| | - Bo Liang
- College of Big Data and Information Engineering, Guizhou University, Guiyang 550025, China
| | - Xiefu Zhang
- College of Mathematics and Big Data, Guizhou Education University, Guiyang 550018, China; (J.L.); (Z.Y.)
| | - Zhixin Yu
- College of Mathematics and Big Data, Guizhou Education University, Guiyang 550018, China; (J.L.); (Z.Y.)
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Liu H, Hong N, Bugday N, Yasar S, Altin S, Deng W, Deng W, Zou G, Hou H, Long Z, Ji X. High Voltage Ga-Doped P2-Type Na 2/3 Ni 0.2 Mn 0.8 O 2 Cathode for Sodium-Ion Batteries. Small 2023:e2307225. [PMID: 38054760 DOI: 10.1002/smll.202307225] [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: 08/21/2023] [Revised: 11/02/2023] [Indexed: 12/07/2023]
Abstract
Ni/Mn-based oxide cathode materials have drawn great attention due to their high discharge voltage and large capacity, but structural instability at high potential causes rapid capacity decay. How to moderate the capacity loss while maintaining the advantages of high discharge voltage remains challenging. Herein, the replacement of Mn ions by Ga ions is proposed in the P2-Na2/3 Ni0.2 Mn0.8 O2 cathode for improving their cycling performances without sacrificing the high discharge voltage. With the introduction of Ga ions, the relative movement between the transition metal ions is restricted and more Na ions are retained in the lattice at high voltage, leading to an enhanced redox activity of Ni ions, validated by ex situ synchrotron X-ray absorption spectrum and X-ray photoelectron spectroscopy. Additionally, the P2-O2 phase transition is replaced by a P2-OP4 phase transition with a smaller volume change, reducing the lattice strain in the c-axis direction, as detected by operando/ex situ X-ray diffraction. Consequently, the Na2/3 Ni0.21 Mn0.74 Ga0.05 O2 electrode exhibits a high discharge voltage close to that of the undoped materials, while increasing voltage retention from 79% to 93% after 50 cycles. This work offers a new avenue for designing high-energy density Ni/Mn-based oxide cathodes for sodium-ion batteries.
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Affiliation(s)
- Huanqing Liu
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Ningyun Hong
- Tianjin Key Laboratory of Functional Crystal Materials, Institute of Functional Crystal, College of Material Science and Engineering, Tianjin University of Technology, Tianjin, 300384, China
| | - Nesrin Bugday
- Department of Chemistry, İnönü (Inonu) University, Malatya, 44280, Turkey
| | - Sedat Yasar
- Department of Chemistry, İnönü (Inonu) University, Malatya, 44280, Turkey
| | - Serdar Altin
- Department of Chemistry, İnönü (Inonu) University, Malatya, 44280, Turkey
| | - Weina Deng
- Hunan Key of Laboratory of Applied Environmental Photocatalysis, Changsha University, Changsha, 410022, China
| | - Wentao Deng
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Guoqiang Zou
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Hongshuai Hou
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Zhen Long
- Tianjin Key Laboratory of Functional Crystal Materials, Institute of Functional Crystal, College of Material Science and Engineering, Tianjin University of Technology, Tianjin, 300384, China
| | - Xiaobo Ji
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
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Peng J, Xiao L, Zhu H, Han L, Ma H. Determining the prognosis of Lung cancer from mutated genes using a deep learning survival model: a large multi-center study. Cancer Cell Int 2023; 23:262. [PMID: 37925409 PMCID: PMC10625246 DOI: 10.1186/s12935-023-03118-y] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 10/30/2023] [Indexed: 11/06/2023] Open
Abstract
BACKGROUND Gene status has become the focus of prognosis prediction. Furthermore, deep learning has frequently been implemented in medical imaging to diagnose, prognosticate, and evaluate treatment responses in patients with cancer. However, few deep learning survival (DLS) models based on mutational genes that are directly associated with patient prognosis in terms of progression-free survival (PFS) or overall survival (OS) have been reported. Additionally, DLS models have not been applied to determine IO-related prognosis based on mutational genes. Herein, we developed a deep learning method to predict the prognosis of patients with lung cancer treated with or without immunotherapy (IO). METHODS Samples from 6542 patients from different centers were subjected to genome sequencing. A DLS model based on multi-panels of somatic mutations was trained and validated to predict OS in patients treated without IO and PFS in patients treated with IO. RESULTS In patients treated without IO, the DLS model (low vs. high DLS) was trained using the training MSK-MET cohort (HR = 0.241 [0.213-0.273], P < 0.001) and tested in the inter-validation MSK-MET cohort (HR = 0.175 [0.148-0.206], P < 0.001). The DLS model was then validated with the OncoSG, MSK-CSC, and TCGA-LUAD cohorts (HR = 0.420 [0.272-0.649], P < 0.001; HR = 0.550 [0.424-0.714], P < 0.001; HR = 0.215 [0.159-0.291], P < 0.001, respectively). Subsequently, it was fine-tuned and retrained in patients treated with IO. The DLS model (low vs. high DLS) could predict PFS and OS in the MIND, MSKCC, and POPLAR/OAK cohorts (P < 0.001, respectively). Compared with tumor-node-metastasis staging, the COX model, tumor mutational burden, and programmed death-ligand 1 expression, the DLS model had the highest C-index in patients treated with or without IO. CONCLUSIONS The DLS model based on mutational genes can robustly predict the prognosis of patients with lung cancer treated with or without IO.
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Affiliation(s)
- Jie Peng
- Department of Medical Oncology, The Second Affiliated Hospital, Guizhou Medical University, Kaili, China.
| | - Lushan Xiao
- Hepatology Unit, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Hongbo Zhu
- Department of Medical Oncology, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, China
| | - Lijie Han
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Honglian Ma
- Department of Radiation Oncology, Cancer Hospital of the University of Chinese Academy of Sciences, Hangzhou, China
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Gao X, Wang H, Liu H, Hong N, Zhu F, Ga J, Song B, Deng W, Zou G, Hou H, Bugday N, Yasar S, Altin S, Ji X. Post-Substitution Modulated Robust Sodium Layered Oxides. Small Methods 2023; 7:e2300635. [PMID: 37572008 DOI: 10.1002/smtd.202300635] [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: 05/18/2023] [Revised: 07/19/2023] [Indexed: 08/14/2023]
Abstract
Sodium layered oxides feature in high capacity and diverse composition, however, are plagued by various issues including limited kinetics and interfacial instability with residual alkali. Conventional substitution/doping and heterogeneous coating are promising to tackle the problems of bulk and surface, respectively, but normally insufficient to address both. Herein, a post-substitution strategy is proposed to modify primary sodium-layered-oxide particles that can simultaneously deal with bulk and surficial issues. As a typical example, post Ti-substitution for O3-NaNi1/3 Fe1/3 Mn1/3 O2 is successfully performed by adjusting thermodynamic driving force, resulting in depth-controllable Ti infusion from surface to bulk, as proved by energy dispersive spectroscopy maps collected at the cross-section. Residual alkali species are efficiently diminished and benefited from the surface-to-bulk osmotic reaction, significantly improving Coulombic efficiency. Moreover, remarkable enhancements in reversible capacity (135 mAh g-1 at C/10), rate capability (74% retention at 5 C), and long-term cycling stability (80% retention after 300 cycles at 2 C) are achieved by manipulating gradient-like Ti distribution in a primary particle that brings with increased kinetics and strengthened interfacial stability, surpassing those given by rough heterotic coating and homogeneous Ti-substitution. Such post-substitution is expected to provide a universal strategy to modify primary layered-oxide particles for developing advanced cathode materials of SIBs.
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Affiliation(s)
- Xu Gao
- State Key Laboratory of Powder Metallurgy, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Haoji Wang
- State Key Laboratory of Powder Metallurgy, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Huanqing Liu
- State Key Laboratory of Powder Metallurgy, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Ningyun Hong
- State Key Laboratory of Powder Metallurgy, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Fangjun Zhu
- State Key Laboratory of Powder Metallurgy, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Jinqiang Ga
- State Key Laboratory of Powder Metallurgy, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Bai Song
- Dongying Cospowers Technology Limited Company, Dongying, 257092, China
| | - Wentao Deng
- State Key Laboratory of Powder Metallurgy, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Guoqiang Zou
- State Key Laboratory of Powder Metallurgy, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Hongshuai Hou
- State Key Laboratory of Powder Metallurgy, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Nesrin Bugday
- Department of Chemistry, Inonu University, Malatya, 44280, Turkey
| | - Sedat Yasar
- Department of Chemistry, Inonu University, Malatya, 44280, Turkey
| | - Serdar Altin
- Department of Physics, Inonu University, Malatya, 44280, Turkey
| | - Xiaobo Ji
- State Key Laboratory of Powder Metallurgy, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
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Chen J, Zhou W, Chen J, Zhou H, Chen Z, Si X, Zhou B, Yan F, Li W. Predictive value of serum lncRNA MALAT1 for the recurrence of persistent atrial fibrillation after radiofrequency ablation. Biomark Med 2023. [PMID: 37489941 DOI: 10.2217/bmm-2022-0697] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/26/2023] Open
Abstract
Objective: The authors investigated the predictive value of MALAT1 for persistent atrial fibrillation (PAF) recurrence after radiofrequency ablation. Methods: Serum MALAT1 level was determined. The correlation between MALAT1 and high-sensitivity C-reactive protein/left atrial diameter (LAD) was analyzed. The predictive value of MALAT1 was evaluated. The postoperative recurrence rate in patients with high/low MALAT1 was compared. Independent risk factors for postoperative recurrence were analyzed. Results: MALAT1 was elevated in PAF patients and positively correlated with high-sensitivity C-reactive protein/LAD. MALAT1/high-sensitivity C-reactive protein/LAD were enhanced in patients with recurrent PAF. Patients with high MALAT1 had a higher recurrence rate. Upregulated MALAT1 was an independent risk factor for postoperative PAF recurrence. Conclusion: Serum MALAT1 level >2.03 predicts postoperative recurrence of PAF, and PAF patients with high MALAT1 have a higher risk of postoperative recurrence.
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Affiliation(s)
- Jiulin Chen
- Department of Cardiology, People's Hospital of Qianxinan Buyi & Miao Minority Autonomous Prefecture, Guizhou Province, China
| | - Wei Zhou
- Department of Cardiology, Affiliated Hospital of Guizhou Medical University, No. 29 Guiyi Street, Beijing Road, Yunyan District, Guiyang City, Guizhou Province, China
| | - Jingjing Chen
- Department of Cardiology, Affiliated Hospital of Guizhou Medical University, No. 29 Guiyi Street, Beijing Road, Yunyan District, Guiyang City, Guizhou Province, China
| | - Haiyan Zhou
- Department of Cardiology, Affiliated Hospital of Guizhou Medical University, No. 29 Guiyi Street, Beijing Road, Yunyan District, Guiyang City, Guizhou Province, China
| | - Zhangrong Chen
- Department of Cardiology, Affiliated Hospital of Guizhou Medical University, No. 29 Guiyi Street, Beijing Road, Yunyan District, Guiyang City, Guizhou Province, China
| | - Xiaoyun Si
- Department of Cardiology, Affiliated Hospital of Guizhou Medical University, No. 29 Guiyi Street, Beijing Road, Yunyan District, Guiyang City, Guizhou Province, China
| | - Bo Zhou
- Guizhou Medical University, No. 9 Beijing Road, Yunyan District, Guiyang City, Guizhou Province, China
| | - Fei Yan
- Department of Cardiology, People's Hospital of Qianxinan Buyi & Miao Minority Autonomous Prefecture, Guizhou Province, China
| | - Wei Li
- Department of Cardiology, Affiliated Hospital of Guizhou Medical University, No. 29 Guiyi Street, Beijing Road, Yunyan District, Guiyang City, Guizhou Province, China
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11
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Wang B, Guo Y, Chen X, Ma J, Lei X, Wang W, Long Y. Assessment of the Biocontrol Potential of Bacillus velezensis WL-23 against Kiwifruit Canker Caused by Pseudomonas syringae pv. actinidiae. Int J Mol Sci 2023; 24:11541. [PMID: 37511299 PMCID: PMC10380555 DOI: 10.3390/ijms241411541] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 07/13/2023] [Accepted: 07/14/2023] [Indexed: 07/30/2023] Open
Abstract
Kiwifruit canker disease, caused by Pseudomonas syringae pv. actinidiae (Psa), is the main threat to kiwifruit production worldwide. Currently, there is no safe and effective disease prevention method; therefore, biological control technologies are being explored for Psa. In this study, Bacillus velezensis WL-23 was isolated from the leaf microbial community of kiwifruit and used to control kiwifruit cankers. Indoor confrontation experiments showed that both WL-23 and its aseptic filtrate had excellent inhibitory activity against the main fungal and bacterial pathogens of kiwifruit. Changes in OD600, relative conductivity, alkaline proteinase, and nucleic acid content were recorded during Psa growth after treatment with the aseptic filtrate, showing that Psa proliferation was inhibited and the integrity of the cell membrane was destroyed; this was further verified using scanning electron microscopy and transmission electron microscopy. In vivo, WL-23 promoted plant growth, increased plant antioxidant enzyme activity, and reduced canker incidence. Therefore, WL-23 is expected to become a biological control agent due to its great potential to contribute to sustainable agriculture.
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Affiliation(s)
- Bingce Wang
- Research Center for Engineering Technology of Kiwifruit, College of Agriculture, Guizhou University, Guiyang 550025, China
- Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Yushan Guo
- Research Center for Engineering Technology of Kiwifruit, College of Agriculture, Guizhou University, Guiyang 550025, China
- Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Xuetang Chen
- Research Center for Engineering Technology of Kiwifruit, College of Agriculture, Guizhou University, Guiyang 550025, China
- Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Jiling Ma
- Research Center for Engineering Technology of Kiwifruit, College of Agriculture, Guizhou University, Guiyang 550025, China
- Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Xia Lei
- Research Center for Engineering Technology of Kiwifruit, College of Agriculture, Guizhou University, Guiyang 550025, China
- Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Weizhen Wang
- Research Center for Engineering Technology of Kiwifruit, College of Agriculture, Guizhou University, Guiyang 550025, China
- Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Youhua Long
- Research Center for Engineering Technology of Kiwifruit, College of Agriculture, Guizhou University, Guiyang 550025, China
- Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China
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12
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Hu X, Yu W, Wu Y, Chen Y. Multi-modal recommendation algorithm fusing visual and textual features. PLoS One 2023; 18:e0287927. [PMID: 37384736 PMCID: PMC10310001 DOI: 10.1371/journal.pone.0287927] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 06/15/2023] [Indexed: 07/01/2023] Open
Abstract
In recommender systems, the lack of interaction data between users and items tends to lead to the problem of data sparsity and cold starts. Recently, the interest modeling frameworks incorporating multi-modal features are widely used in recommendation algorithms. These algorithms use image features and text features to extend the available information, which alleviate the data sparsity problem effectively, but they also have some limitations. On the one hand, multi-modal features of user interaction sequences are not considered in the interest modeling process. On the other hand, the aggregation of multi-modal features often employs simple aggregators, such as sums and concatenation, which do not distinguish the importance of different feature interactions. In this paper, to tackle this, we propose the FVTF (Fusing Visual and Textual Features) algorithm. First, we design a user history visual preference extraction module based on the Query-Key-Value attention to model users' historical interests by using of visual features. Second, we design a feature fusion and interaction module based on the multi-head bit-wise attention to adaptively mine important feature combinations and update the higher-order attention fusion representation of features. We conduct experiments on the Movielens-1M dataset, and the experiments show that FVTF achieved the best performance compared with the benchmark recommendation algorithms.
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Affiliation(s)
- Xuefeng Hu
- The School of Electronics Engineering and Computer Science, Peking University, Beijing, China
| | - Wenting Yu
- The State Key Laboratory of Public Big Data, Guizhou University, Guiyang, China
- The College of Computer Science and Technology, Guizhou University, Guiyang, China
| | - Yun Wu
- The State Key Laboratory of Public Big Data, Guizhou University, Guiyang, China
- The College of Computer Science and Technology, Guizhou University, Guiyang, China
| | - Yukang Chen
- The State Key Laboratory of Public Big Data, Guizhou University, Guiyang, China
- The College of Computer Science and Technology, Guizhou University, Guiyang, China
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13
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Guo J, Ye W, Wu X, Huang H, Li B, Sun Z, Ren Z, Yang Z. TNF-α activates RELA expression via TNFRSF1B to upregulate OPA1 expression and inhibit chondrogenic differentiation of human adipose stem cells. J Orthop Surg Res 2023; 18:430. [PMID: 37312126 DOI: 10.1186/s13018-023-03846-x] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 05/09/2023] [Indexed: 06/15/2023] Open
Abstract
BACKGROUND Tumor necrosis factor-alpha (TNF-α), one of the pro-inflammatory cytokines mediating the local inflammatory process in joints, inhibits cartilage formation and has a detrimental effect on stem cell-based cartilage regeneration for the treatment of osteoarthritis (OA). However, the mechanisms behind this inhibitory effect are still poorly understood. Mitochondrial morphological changes mediated by mitochondrial fusion and fission are highly plastic, are quite sensitive to environmental stimuli and play a crucial role in maintaining cell structure and function. In our study, chondrogenic differentiated human adipose stem cells (hADSCs) were exposed to TNF-α and the effect of TNF-α on the ability of hADSCs to chondrogenic differentiate and on mitochondrial fusion and fission was observed and analyzed. The aim was to investigate the role and mechanisms of mitochondrial fusion and fission regulation in the chondrogenic differentiation of hADSCs under normal conditions and under exposure to TNF-α. METHODS We used flow cytometry to identify hADSCs immunophenotypes CD29, CD44, CD34, CD45, and HLA-DR. Alcian blue staining and Sirius red staining were used to observe the formation of proteoglycans and collagen during the chondrogenic differentiation of hADSCs, respectively. The mRNA and protein expression levels of the cartilage formation marker SOX9, type II collagen (COL2A1), and Aggrecan were measured by real-time fluorescent quantitative PCR (RT-qPCR) and western blot, respectively. The fluorescent probes MitoTracker® Red CMXRos and JC-1 were used to visualize mitochondria morphology and detect mitochondrial membrane electricity (MMP). Affymetrix PrimeView™ chips were used for gene expression profiling. RESULTS The results showed that the chondrogenic differentiation of hADSCs was inhibited in the presence of TNF-α that optic atrophy 1 (OPA1) expression was significantly upregulated and mitochondria were prolonged and interconnected during this process. Gene microarray and RT-qPCR data showed that the presence of TNF-α led to increased expression of TNFα receptor 2 (TNFRSF1B) and RELA during chondrogenic differentiation of hADSCs. CONCLUSIONS TNF-α inhibits chondrogenic differentiation of human adipose stem cells by activating RELA expression through TNFRSF1B upregulating OPA1 expression thereby increasing mitochondrial fusion.
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Affiliation(s)
- Jiajia Guo
- Medical College of Guizhou University, Guiyang, 550025, Guizhou, China
| | - Wang Ye
- Department of Orthopedics, Guizhou Provincial People's Hospital, Guiyang, 550002, Guizhou, China
| | - Xinglin Wu
- Department of Orthopedics, Guizhou Provincial People's Hospital, Guiyang, 550002, Guizhou, China
| | - Haifeng Huang
- Department of Orthopedics, Guizhou Provincial People's Hospital, Guiyang, 550002, Guizhou, China
| | - Bo Li
- Department of Orthopedics, Guizhou Provincial People's Hospital, Guiyang, 550002, Guizhou, China
| | - Zeyu Sun
- Department of Orthopedics, Guizhou Provincial People's Hospital, Guiyang, 550002, Guizhou, China
| | - Zhijing Ren
- Department of Clinical Laboratory, Guizhou Provincial People's Hospital, Guiyang, 550002, Guizhou, China.
| | - Zhen Yang
- Department of Orthopedics, Guizhou Provincial People's Hospital, Guiyang, 550002, Guizhou, China.
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14
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Wang J, Yu C, Zhang J, Liu R, Xiao J. Aberrant gut microbiota and fecal metabolites in patients with coal-burning endemic fluorosis in Guizhou, China. Environ Sci Pollut Res Int 2023:10.1007/s11356-023-27051-9. [PMID: 37140865 DOI: 10.1007/s11356-023-27051-9] [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: 02/01/2023] [Accepted: 04/12/2023] [Indexed: 05/05/2023]
Abstract
Chronic exposure to excessive environmental fluoride has caused fluorosis to become a major public health problem worldwide. Although studies on stress pathways, signaling pathways, and apoptosis induced by fluoride have provided an in-depth understanding of the mechanism of this disease, its exact pathogenesis remains unclear. We hypothesized that the human gut microbiota and metabolome are associated with the pathogenesis of this disease. To get further insight into the profiles of intestinal microbiota and metabolome in coal-burning-induced endemic fluorosis patients, we conducted 16S rRNA sequencing of the intestinal microbial DNA and carried out non-targeted metabolomics of fecal samples from 32 patients with skeletal fluorosis and 33 matched healthy controls in Guizhou, China. We found that the gut microbiota of coal-burning endemic fluorosis patients displayed significant differences in composition, diversity, and abundance compared with healthy controls. This was characterized by an increase in the relative abundance of Verrucomicrobiota, Desulfobacterota, Nitrospirota, Crenarchaeota, Chloroflexi, Myxococcota, Acidobacteriota, Proteobacteria, and unidentified_Bacteria, and a significant decrease in the relative abundance of Firmicutes and Bacteroidetes at the phylum level. Additionally, at the genus level, the relative abundance of some beneficial bacteria, such as Bacteroides, Megamonas, Bifidobacterium, and Faecalibacterium, was significantly reduced. We also demonstrated that, at the genus level, some gut microbial markers, including Anaeromyxobacter, MND1, oc32, Haliangium, and Adurb.Bin063_1, showed potential for identifying coal-burning endemic fluorosis. Moreover, non-targeted metabolomics and correlation analysis revealed the changes in the metabolome, particularly the gut microbiota-derived tryptophan metabolites such as tryptamine, 5-hydroxyindoleacetic acid, and indoleacetaldehyde. Our results indicated that excessive fluoride might cause xenobiotic-mediated dysbiosis of human gut microbiota and metabolic disorders. These findings suggest that the alterations in gut microbiota and metabolome play vital roles in regulating disease susceptibility and multi-organ damage after excessive fluoride exposure.
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Affiliation(s)
- Jianbin Wang
- Institute of Medicinal Biotechnology, Affiliated Hospital of Zunyi Medical University, 149 Dalian Road, Huichuan District, Zunyi, 563003, China
- Zunyi Municipal Key Laboratory of Medicinal Biotechnology & Guizhou Provincial Research Center for Translational Medicine, Affiliated Hospital of Zunyi Medical University, 149 Dalian Road, Huichuan District, Zunyi, 563003, China
- Department of Endocrinology, Affiliated Hospital of Zunyi Medical University, 149 Dalian Road, Huichuan District, Zunyi, 563003, China
| | - Chao Yu
- Institute of Medicinal Biotechnology, Affiliated Hospital of Zunyi Medical University, 149 Dalian Road, Huichuan District, Zunyi, 563003, China
| | - Jiarong Zhang
- Institute of Medicinal Biotechnology, Affiliated Hospital of Zunyi Medical University, 149 Dalian Road, Huichuan District, Zunyi, 563003, China
| | - Ruming Liu
- Institute of Medicinal Biotechnology, Affiliated Hospital of Zunyi Medical University, 149 Dalian Road, Huichuan District, Zunyi, 563003, China
- Zunyi Municipal Key Laboratory of Medicinal Biotechnology & Guizhou Provincial Research Center for Translational Medicine, Affiliated Hospital of Zunyi Medical University, 149 Dalian Road, Huichuan District, Zunyi, 563003, China
| | - Jianhui Xiao
- Institute of Medicinal Biotechnology, Affiliated Hospital of Zunyi Medical University, 149 Dalian Road, Huichuan District, Zunyi, 563003, China.
- Zunyi Municipal Key Laboratory of Medicinal Biotechnology & Guizhou Provincial Research Center for Translational Medicine, Affiliated Hospital of Zunyi Medical University, 149 Dalian Road, Huichuan District, Zunyi, 563003, China.
- Department of Endocrinology, Affiliated Hospital of Zunyi Medical University, 149 Dalian Road, Huichuan District, Zunyi, 563003, China.
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15
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Tan HY, Liang FM, Zhang WJ, Zhang Y, Cui JH, Dai YY, Qiu XM, Wang WH, Zhou Y, Chen DP, Li CP. Novel 2-Amino-1,4-Naphthoquinone Derivatives Induce A549 Cell Death through Autophagy. Molecules 2023; 28:molecules28083289. [PMID: 37110525 PMCID: PMC10143525 DOI: 10.3390/molecules28083289] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 03/14/2023] [Accepted: 03/28/2023] [Indexed: 04/29/2023] Open
Abstract
A series of 1,4-naphthoquinone derivatives containing were synthesized as anti-cancer agents and the crystal structure of compound 5a was confirmed by X-ray diffraction. In addition, the inhibitory activities against four cancer cell lines (HepG2, A549, K562, and PC-3) were tested, respectively, and compound 5i showed significant cytotoxicity on the A549 cell line with the IC50 of 6.15 μM. Surprisingly, in the following preliminary biological experiments, we found that compound 5i induced autophagy by promoting the recycling of EGFR and signal transduction in the A549 cell, resulting in the activation of the EGFR signal pathway. The potential binding pattern between compound 5i and EGFR tyrosine kinase (PDB ID: 1M17) was also identified by molecular docking. Our research paves the way for further studies and the development of novel and powerful anti-cancer drugs.
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Affiliation(s)
- Hua-Yuan Tan
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
| | - Feng-Ming Liang
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
| | - Wen-Jing Zhang
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
| | - Yi Zhang
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
| | - Jun-Hao Cui
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
| | - Yu-Yu Dai
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
| | - Xue-Mei Qiu
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
| | - Wen-Hang Wang
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
| | - Yue Zhou
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
- Guizhou Engineering Laboratory for Synthetic Drugs, Guizhou University, Guiyang 550025, China
| | - Dan-Ping Chen
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
- Guizhou Engineering Laboratory for Synthetic Drugs, Guizhou University, Guiyang 550025, China
| | - Cheng-Peng Li
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
- Guizhou Engineering Laboratory for Synthetic Drugs, Guizhou University, Guiyang 550025, China
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16
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Shen H, Wu Z. Effect of Disulfide Bridge on the Binding of SARS-CoV-2 Fusion Peptide to Cell Membrane: A Coarse-Grained Study. ACS Omega 2022; 7:36762-36775. [PMID: 36278087 PMCID: PMC9583636 DOI: 10.1021/acsomega.2c05079] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 09/21/2022] [Indexed: 06/16/2023]
Abstract
In this paper, we present the parameterization of the CAVS coarse-grained (CG) force field for 20 amino acids, and our CG simulations show that the CAVS force field could accurately predict the amino acid tendency of the secondary structure. Then, we used the CAVS force field to investigate the binding of a severe acute respiratory syndrome-associated coronavirus fusion peptide (SARS-CoV-2 FP) to a phospholipid bilayer: a long FP (FP-L) containing 40 amino acids and a short FP (FP-S) containing 26 amino acids. Our CAVS CG simulations displayed that the binding affinity of the FP-L to the bilayer is higher than that of the FP-S. We found that the FP-L interacted more strongly with membrane cholesterol than the FP-S, which should be attributed to the stable helical structure of the FP-L at the C-terminus. In addition, we discovered that the FP-S had one major and two minor membrane-bound states, in agreement with previous all-atom molecular dynamics (MD) studies. However, we found that both the C-terminal and N-terminal amino acid residues of the FP-L can strongly interact with the bilayer membrane. Furthermore, we found that the disulfide bond formed between Cys840 and Cys851 stabilized the helices of the FP-L at the C-terminus, enhancing the interaction between the FP-L and the bilayer membrane. Our work indicates that the stable helical structure is crucial for binding the SARS-CoV-2 FP to cell membranes. In particular, the helical stability of FP should have a significant influence on the FP-membrane binding.
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Affiliation(s)
- Hujun Shen
- Guizhou
Provincial Key Laboratory of Computational Nano-Material Science, Guizhou Education University, Guiyang 550018, China
| | - Zhenhua Wu
- Department
of Big Data and Artificial Intelligence, Guizhou Vocational Technology College of Electronics & Information, Kaili 556000, China
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17
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Zhang NJ, Zhang Y, Yin S, Ruan DJ, He N, Chen X, Yang XF. Nonylphenol Promoted Epithelial-Mesenchymal Transition in Colorectal Cancer Cells by Upregulating the Expression of Regulator of Cell Cycle. Chem Res Toxicol 2022; 35:1533-1540. [PMID: 36074022 PMCID: PMC9491325 DOI: 10.1021/acs.chemrestox.2c00180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Indexed: 11/28/2022]
Abstract
Nonylphenol (NP) is a widely used chemical, which has been considered a kind of endocrine-disrupting chemical and is involved in the occurrence and development of many types of cancers. Our recent studies demonstrated that NP exposure is related to colorectal cancer (CRC) progression. In this study, we also found epithelial-mesenchymal transition (EMT) promoted by NP treatment in CRC cells. However, the mechanism of NP on tumor metastasis is still unclear. In this study, we focused on the effect of the regulator of cell cycle (RGCC) induced by NP treatment. The cancer genome atlas (TCGA) analysis suggested that the expression of RGCC increased in CRC tissues, and our clinical samples showed that the expression of RGCC in tumor tissues is positively correlated with the serum level of NP in CRC patients. Further studies revealed that overexpression of RGCC could enhance the NP-induced EMT process in CRC cells and activate ERK signaling pathways. Inhibiting ERK signaling by ERK inhibitors or the knockdown of RGCC could attenuate the NP-induced EMT process. In addition, both RGCC overexpression and NP treatment could activate ERK pathways and attenuate the effect of ERK inhibitors on the EMT process in CRC cells. Altogether, this study demonstrated that NP could induce cell invasion and migration by increasing the expression of RGCC to enhance the EMT process, which might be through the activation of ERK signaling pathways. This finding supported a potential target for studying NP exposure-related colorectal cancers.
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Affiliation(s)
- Nian-jie Zhang
- Department of Gastrointestinal
Surgery, The Second Affiliated Hospital
of Zunyi Medical University, Zunyi 563006, China
| | - Yuanwei Zhang
- Department of Gastrointestinal
Surgery, The Second Affiliated Hospital
of Zunyi Medical University, Zunyi 563006, China
| | - Shuo Yin
- Department of Gastrointestinal
Surgery, The Second Affiliated Hospital
of Zunyi Medical University, Zunyi 563006, China
| | - Du-ji Ruan
- Department of Gastrointestinal
Surgery, The Second Affiliated Hospital
of Zunyi Medical University, Zunyi 563006, China
| | - Nian He
- Department of Gastrointestinal
Surgery, The Second Affiliated Hospital
of Zunyi Medical University, Zunyi 563006, China
| | - Xu Chen
- Department of Gastrointestinal
Surgery, The Second Affiliated Hospital
of Zunyi Medical University, Zunyi 563006, China
| | - Xue-feng Yang
- Department of Gastrointestinal
Surgery, The Second Affiliated Hospital
of Zunyi Medical University, Zunyi 563006, China
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18
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Zhao J, Wang X. Activation of H 2S by Atomic Cr, Mn, and Fe: Matrix Infrared Spectra and Quantum Chemical Calculations. ACS Omega 2022; 7:29337-29343. [PMID: 36033681 PMCID: PMC9404174 DOI: 10.1021/acsomega.2c03594] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 07/29/2022] [Indexed: 06/15/2023]
Abstract
Hydrogen sulfide is toxic and corrosive gas abundantly available in nature. The activation of hydrogen sulfide to produce hydrogen and elemental sulfur is of great significance for possible applications in toxic pollutant control and hydrogen energy regeneration. The activation of H2S by transition metal atoms (M = Cr, Mn, and Fe) has been studied by low-temperature matrix isolation infrared spectroscopy and quantum chemical calculations. Experimental and theoretical results indicate that the reaction between ground-state M atoms and H2S is inhibited by the repulsive interactions between the reactants. After being excited upon photolysis, the corresponding excited-state M atoms react with H2S molecules spontaneously. The produced insertion product HMSH further decomposed to metal sulfides upon full-arc mercury lamp irradiation by the splitting of hydrogen.
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Affiliation(s)
- Jie Zhao
- School
of Chemistry and Chemical Engineering, Guizhou
University, Guiyang 550025, Guizhou, China
- School
of Chemical Science and Engineering, Tongji
University, Shanghai 200092, China
| | - Xuefeng Wang
- School
of Chemical Science and Engineering, Tongji
University, Shanghai 200092, China
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19
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Qiu J, Zhang Z, Hu A, Zhao P, Wei X, Song H, Yang J, Li Y. Integrating UPLC-HR-MS/MS, Network Pharmacology, and Experimental Validation to Uncover the Mechanisms of Jin'gan Capsules against Breast Cancer. ACS Omega 2022; 7:28003-28015. [PMID: 35990498 PMCID: PMC9386888 DOI: 10.1021/acsomega.2c01921] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 07/25/2022] [Indexed: 06/15/2023]
Abstract
In the theory of traditional Chinese medicine (TCM), "liver-qi" stagnation and heat-induced toxicity represent the main etiologies of breast cancer. Recently, several TCMs with heat-clearing and detoxification efficacy have shown inhibitory effects on breast cancer. Jin'gan capsules (JGCs), initially approved to treat colds in China, are a heat-clearing and detoxification TCM formula. However, the anticancer activity of JGCs against breast cancer and its underlying mechanisms remain unclear. First, we assessed the antiproliferative activity of JGCs in breast cancer cell lines and evaluated their effects on cell apoptosis and the cell cycle by flow cytometry. Furthermore, we identified the potential bioactive components of JGCs and their corresponding target genes and constructed a bioactive compound-target interaction network by ultra-performance liquid chromatography-high-resolution tandem mass spectrometry (UPLC-HR-MS/MS) and network pharmacology analysis. Finally, the underlying mechanism was investigated through gene function enrichment analysis and experimental validation. We found that JGCs significantly inhibited breast cancer cell growth with IC50 values of 0.56 ± 0.03, 0.16 ± 0.03, and 0.94 ± 0.09 mg/mL for MDA-MB-231, MDA-MB-468, and MCF-7, respectively. In addition, JGC treatment dramatically induced apoptosis and S phase cell cycle arrest in breast cancer cells. Western blot analysis confirmed that JGCs could regulate the protein levels of apoptosis- and cell cycle-related genes. Utilizing UPLC-HR-MS/MS analysis and network pharmacology, we identified 7 potential bioactive ingredients in JGCs and 116 antibreast cancer targets. Functional enrichment analysis indicated that the antitumor effects of JGCs were strongly associated with apoptosis and the Janus kinase (JAK)-signal transducer and activator of transcription (STAT) signaling pathway. Western blot analysis validated that JGC treatment markedly decreased the expression levels of p-JAK2, p-STAT3, and STAT3. Our findings suggest that JGCs suppress breast cancer cell proliferation and induce cell cycle arrest and apoptosis partly by inhibiting the JAK2/STAT3 signaling pathway, highlighting JGCs as a potential therapeutic candidate against breast cancer.
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Affiliation(s)
- Jianfei Qiu
- State
Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China
- State
Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- The
Key Laboratory of Chemistry for Natural Products of Guizhou Province
and Chinese Academic of Sciences & Key Laboratory of Endemic and
Ethnic Diseases, Ministry of Education & Key Laboratory of Medical
Molecular Biology of Guizhou Province, Guizhou
Medical University, Guiyang 550004, China
| | - Zhiyin Zhang
- Guiyang
Hospital of Guizhou Aviation Industry Group, Guiyang 550025, China
| | - Anling Hu
- State
Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China
- State
Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- The
Key Laboratory of Chemistry for Natural Products of Guizhou Province
and Chinese Academic of Sciences & Key Laboratory of Endemic and
Ethnic Diseases, Ministry of Education & Key Laboratory of Medical
Molecular Biology of Guizhou Province, Guizhou
Medical University, Guiyang 550004, China
| | - Peng Zhao
- State
Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China
- State
Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- The
Key Laboratory of Chemistry for Natural Products of Guizhou Province
and Chinese Academic of Sciences & Key Laboratory of Endemic and
Ethnic Diseases, Ministry of Education & Key Laboratory of Medical
Molecular Biology of Guizhou Province, Guizhou
Medical University, Guiyang 550004, China
| | - Xuenai Wei
- State
Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China
- State
Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- The
Key Laboratory of Chemistry for Natural Products of Guizhou Province
and Chinese Academic of Sciences & Key Laboratory of Endemic and
Ethnic Diseases, Ministry of Education & Key Laboratory of Medical
Molecular Biology of Guizhou Province, Guizhou
Medical University, Guiyang 550004, China
| | - Hui Song
- The
Key Laboratory of Chemistry for Natural Products of Guizhou Province
and Chinese Academic of Sciences & Key Laboratory of Endemic and
Ethnic Diseases, Ministry of Education & Key Laboratory of Medical
Molecular Biology of Guizhou Province, Guizhou
Medical University, Guiyang 550004, China
| | - Jue Yang
- State
Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China
- State
Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- The
Key Laboratory of Chemistry for Natural Products of Guizhou Province
and Chinese Academic of Sciences & Key Laboratory of Endemic and
Ethnic Diseases, Ministry of Education & Key Laboratory of Medical
Molecular Biology of Guizhou Province, Guizhou
Medical University, Guiyang 550004, China
| | - Yanmei Li
- State
Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China
- State
Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- The
Key Laboratory of Chemistry for Natural Products of Guizhou Province
and Chinese Academic of Sciences & Key Laboratory of Endemic and
Ethnic Diseases, Ministry of Education & Key Laboratory of Medical
Molecular Biology of Guizhou Province, Guizhou
Medical University, Guiyang 550004, China
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20
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Shen H, Wu Z, Chen L. Different Binding Modes of SARS-CoV-1 and SARS-CoV-2 Fusion Peptides to Cell Membranes: The Influence of Peptide Helix Length. J Phys Chem B 2022; 126:4261-4271. [PMID: 35658454 PMCID: PMC9195569 DOI: 10.1021/acs.jpcb.2c01295] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 05/13/2022] [Indexed: 12/15/2022]
Abstract
Although the amino acid sequences of SARS-CoV-1 and SARS-CoV-2 fusion peptides (FPs) are highly conserved, the cryo-electron microscopy structures of the SARS-CoV-1 and SARS-CoV-2 spike proteins show that the helix length of SARS-CoV-1 FP is longer than that of SARS-CoV-2 FP. In this work, we simulated the membrane-binding models of SARS-CoV-1 and SARS-CoV-2 FPs and compared the binding modes of the FPs with the POPC/POPE/cholesterol bilayer membrane. Our simulation results show that the SARS-CoV-2 FP binds to the bilayer membrane more effectively than the SARS-CoV-1 FP. It is seen that the short N-terminal helix of SARS-CoV-2 FP is more favorable to insert into the target membrane than the long N-terminal helix of SARS-CoV-1 FP. Meanwhile, the potential of mean force calculations showed that the SARS-CoV-2 FP would prefer only one binding mode (N-terminal binding), whereas the SARS-CoV-1 FP has two favorable membrane-binding modes (C-terminal and N-terminal binding modes). Moreover, in the case of SARS-CoV-1 FP binding to the target membrane, the transition between the two binding modes is relatively fast. Finally, we discovered that the membrane-binding mode would influence the helix length of SARS-CoV-1 FP, while the helix length of SARS-CoV-2 FP could be stably maintained in the membrane-bound configurations. This work suggests that the short helix might endow the FP with high membrane-anchoring strength. In particular, the membrane-penetrating residues (Phe, Ile, and Leu) of short α-helix interact with the cell membrane more strongly than those of long α-helix.
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Affiliation(s)
- Hujun Shen
- Guizhou
Provincial Key Laboratory of Computational Nano-Material Science, Guizhou Education University, Guiyang 550018, China
| | - Zhenhua Wu
- Department
of Computer Science, Guizhou Vocational
Technology College of Electronics & Information, Kaili 556000, China
| | - Ling Chen
- Guizhou
Provincial Key Laboratory of Computational Nano-Material Science, Guizhou Education University, Guiyang 550018, China
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21
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Chen X, Wu Y, Deng M, Shen H, Ding J, Wang W. Effects of Fluorination and Molybdenum Codoping on Monoclinic BiVO 4 Photocatalyst by HSE Calculations. ACS Omega 2022; 7:17075-17082. [PMID: 35647421 PMCID: PMC9134236 DOI: 10.1021/acsomega.2c00382] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 05/04/2022] [Indexed: 06/15/2023]
Abstract
Monoclinic phase bismuth vanadate (BiVO4) is one of the most promising photoelectrochemical materials used in water-splitting photoelectrochemical cells. It could be even better if its band gap and charge transport characteristics were optimized. Although codoping of BiVO4 has proven to be an effective strategy, its effects are remarkably poorly understood. Using the Heyd-Scuseria-Ernzerhof (HSE) hybrid functional, we estimate the formation energy, electronic properties, and photocatalytic activities of F and Mo codoped BiVO4. We find that Mo atoms prefer to replace V atoms, whereas F atoms prefer to replace O atoms (FOMoV-doped BiVO4) under oxygen-poor conditions according to calculated formation energies. BiVO4 doped with FOMoV is found to be shallow-level doped, occurring with some continuum states above the conduction band edge, which is advantageous for photochemical catalysis. Moreover, FOMoV-doped BiVO4 shows absorption stronger than that of pure BiVO4 in the visible spectrum. Based on the band-edge calculation, BiVO4 doped with FOMoV still retains a high oxidizing capacity. It has been shown that FOMoV-doped BiVO4 exhibits a very high photocatalytic activity under visible light.
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Affiliation(s)
- Xia Chen
- School
of Physics and Optoelectronic Engineering, Xiangtan University, Xiangtan 411100, China
| | - Yonggang Wu
- School
of Physics and Electronic Science, Guizhou
Education University, Guiyang 550018, China
| | - MingSen Deng
- Guizhou
Provincial Key Laboratory of Computational Nano-Material Science, Guizhou Education University, Guiyang 550018, China
| | - Hujun Shen
- Guizhou
Provincial Key Laboratory of Computational Nano-Material Science, Guizhou Education University, Guiyang 550018, China
| | - Jianwen Ding
- School
of Physics and Optoelectronic Engineering, Xiangtan University, Xiangtan 411100, China
| | - Wentao Wang
- Guizhou
Provincial Key Laboratory of Computational Nano-Material Science, Guizhou Education University, Guiyang 550018, China
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22
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Chen W, Liang J, Ren X, Zhao J, Han Y, Liang Z. Cryptic Diversity of Isaria-like Species in Guizhou, China. Life (Basel) 2021; 11:1093. [PMID: 34685462 PMCID: PMC8539930 DOI: 10.3390/life11101093] [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] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 10/12/2021] [Accepted: 10/14/2021] [Indexed: 11/16/2022] Open
Abstract
Many Isaria-like species have recently been moved into more appropriate genera. However, more robust molecular phylogenetic analyses are still required for Isaria-like fungi to ensure accurate taxonomic identification. We analyzed these Isaria-like strains using multi-gene phylogenetics. Cryptic diversity was discovered in several Isaria farinosa strains, and two new species, Samsoniella pseudogunnii and S. pupicola, are proposed. Our results reveal that more attention needs to be paid to cryptic intraspecific diversity across different isolates and genotypes of the Isaria-like species, some of which will need to be transferred to Samsoniella. Interestingly, S. hepiali, with a very broad host distribution, has been widely used as a medicinal and edible cordycipitoid fungus.
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Affiliation(s)
- Wanhao Chen
- Center for Mycomedicine Research, Basic Medical School, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China; (W.C.); (J.L.); (X.R.); (J.Z.)
| | - Jiandong Liang
- Center for Mycomedicine Research, Basic Medical School, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China; (W.C.); (J.L.); (X.R.); (J.Z.)
| | - Xiuxiu Ren
- Center for Mycomedicine Research, Basic Medical School, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China; (W.C.); (J.L.); (X.R.); (J.Z.)
- College of Ecological Engineering, Guizhou University of Engineering Science, Bijie 551700, China
| | - Jiehong Zhao
- Center for Mycomedicine Research, Basic Medical School, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China; (W.C.); (J.L.); (X.R.); (J.Z.)
| | - Yanfeng Han
- Institute of Fungus Resources, Department of Ecology, College of Life Sciences, Guizhou University, Guiyang 550025, China;
| | - Zongqi Liang
- Institute of Fungus Resources, Department of Ecology, College of Life Sciences, Guizhou University, Guiyang 550025, China;
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23
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Li M, Wang K, Xiong Y. Multiple Intermolecular Interaction to Improve the Abrasion Resistance and Wet Skid Resistance of Eucommia Ulmoides Gum/Styrene Butadiene Rubber Composite. Materials (Basel) 2021; 14:5246. [PMID: 34576470 PMCID: PMC8465127 DOI: 10.3390/ma14185246] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 09/03/2021] [Accepted: 09/06/2021] [Indexed: 11/16/2022]
Abstract
A rubber composite was prepared by using methyltriethoxysilane (MTES) to modify silica (SiO2) and epoxidized eucommia ulmoides gum (EEUG) as rubber additives to endow silica with excellent dispersion and interfacial compatibility under the action of processing shear. The results showed that compared with the unmodified silica-reinforced rubber composite (SiO2/EUG/SBR), the bound rubber content of MTES-SiO2/EEUG/EUG/SBR was increased by 184%, and its tensile strength, modulus at 100% strain, modulus at 300% strain, and tear strength increased by 42.1%, 88.5%, 130.8%, and 39.9%, respectively. The Akron abrasion volume of the MTES-SiO2/EEUG/EUG/SBR composite decreased by 50.9%, and the wet friction coefficient increased by 43.2%. The wear resistance and wet skid resistance of the rubber composite were significantly improved.
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Affiliation(s)
| | | | - Yuzhu Xiong
- Department of Polymer Materials and Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China; (M.L.); (K.W.)
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24
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Cheng YT, Liao J, Zhou Q, Huo H, Zellmer L, Tang ZL, Ma H, Hong W, Liao DJ. Zoledronic acid modulates osteoclast apoptosis through activation of the NF-κB signaling pathway in ovariectomized rats. Exp Biol Med (Maywood) 2021; 246:1727-1739. [PMID: 33926259 PMCID: PMC8719043 DOI: 10.1177/15353702211011052] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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] [Received: 10/03/2020] [Accepted: 03/24/2021] [Indexed: 01/22/2023] Open
Abstract
Bone mass loss (osteoporosis) seen in postmenopausal women is an adverse factor for implant denture. Using an ovariectomized rat model, we studied the mechanism of estrogen-deficiency-caused bone loss and the therapeutic effect of Zoledronic acid. We observed that ovariectomized-caused resorption of bone tissue in the mandible was evident at four weeks and had not fully recovered by 12 weeks post-ovariectomized compared with the sham-operated controls. Further evaluation with a TUNEL assay showed ovariectomized enhanced apoptosis of osteoblasts but inhibited apoptosis of osteoclasts in the mandible. Zoledronic acid given subcutaneously as a single low dose was shown to counteract both of these ovariectomized effects. Immunohistochemical staining showed that ovariectomized induced the protein levels of RANKL and the 65-kD subunit of the NF-κB complex mainly in osteoclasts, as confirmed by staining for TRAP, a marker for osteoclasts, whereas zoledronic acid inhibited these inductions. Western blotting showed that the levels of RANKL, p65, as well as the phosphorylated form of p65, and IκB-α were all higher in the ovariectomized group than in the sham and ovariectomized + zoledronic acid groups at both the 4th- and 12th-week time points in the mandible. These data collectively suggest that ovariectomized causes bone mass loss by enhancing apoptosis of osteoblasts and inhibiting apoptosis of osteoclasts. In osteoclasts, these cellular effects may be achieved by activating RANKL-NF-κB signalling. Moreover, zoledronic acid elicits its therapeutic effects in the mandible by counteracting these cellular and molecular consequences of ovariectomized.
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Affiliation(s)
- Yu-Ting Cheng
- School/Hospital of Stomatology, Guizhou Medical University, Guizhou 550004, P.R. China
| | - Jian Liao
- School/Hospital of Stomatology, Guizhou Medical University, Guizhou 550004, P.R. China
| | - Qian Zhou
- School/Hospital of Stomatology, Guizhou Medical University, Guizhou 550004, P.R. China
| | - Hua Huo
- School/Hospital of Stomatology, Guizhou Medical University, Guizhou 550004, P.R. China
| | - Lucas Zellmer
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA
| | - Zheng-Long Tang
- School/Hospital of Stomatology, Guizhou Medical University, Guizhou 550004, P.R. China
| | - Hong Ma
- School/Hospital of Stomatology, Guizhou Medical University, Guizhou 550004, P.R. China
| | - Wei Hong
- Key Laboratory of Endemic and Ethnic Diseases, Guizhou Medical University, Ministry of Education, Guizhou 550004, P.R. China
| | - Dezhong Joshua Liao
- Department of Pathology, Guizhou Medical University School of Medicine, Guizhou 550004, P.R. China
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25
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Xiao L, Yu L, Li P, Chi J, Tang Z, Li J, Tan S, Wang X. Design, Synthesis, and Bioactivity Evaluation of New Thiochromanone Derivatives Containing a Carboxamide Moiety. Molecules 2021; 26:4391. [PMID: 34361545 PMCID: PMC8348251 DOI: 10.3390/molecules26154391] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/15/2021] [Accepted: 07/16/2021] [Indexed: 12/02/2022] Open
Abstract
In this study, using the botanical active component thiochromanone as the lead compound, a total of 32 new thiochromanone derivatives containing a carboxamide moiety were designed and synthesized and their in vitro antibacterial activities against Xanthomonas oryzae pv. oryzae (Xoo), Xanthomonas oryzae pv. oryzicolaby (Xoc), and Xanthomonas axonopodis pv. citri (Xac) were determined, as well as their in vitro antifungal activities against Botryosphaeria dothidea (B. dothidea), Phomopsis sp., and Botrytis cinerea (B. cinerea). Bioassay results demonstrated that some of the target compounds exhibited moderate to good in vitro antibacterial and antifungal activities. In particular, compound 4e revealed excellent in vitro antibacterial activity against Xoo, Xoc, and Xac, and its EC50 values of 15, 19, and 23 μg/mL, respectively, were superior to those of Bismerthiazol and Thiodiazole copper. Meanwhile, compound 3b revealed moderate in vitro antifungal activity against B. dothidea at 50 μg/mL, and the inhibition rate reached 88%, which was even better than that of Pyrimethanil, however, lower than that of Carbendazim. To the best of our knowledge, this is the first report on the antibacterial and antifungal activities of this series of novel thiochromanone derivatives containing a carboxamide moiety.
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Affiliation(s)
- Lingling Xiao
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China; (L.X.); (L.Y.); (J.C.); (Z.T.); (J.L.); (X.W.)
| | - Lu Yu
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China; (L.X.); (L.Y.); (J.C.); (Z.T.); (J.L.); (X.W.)
| | - Pei Li
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China; (L.X.); (L.Y.); (J.C.); (Z.T.); (J.L.); (X.W.)
- Qiandongnan Engineering and Technology Research Center for Comprehensive Utilization of National Medicine/Key Laboratory for Modernization of Qiandongnan Miao & Dong Medicine, Kaili University, Kaili 556011, China
| | - Jiyan Chi
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China; (L.X.); (L.Y.); (J.C.); (Z.T.); (J.L.); (X.W.)
| | - Zhangfei Tang
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China; (L.X.); (L.Y.); (J.C.); (Z.T.); (J.L.); (X.W.)
| | - Jie Li
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China; (L.X.); (L.Y.); (J.C.); (Z.T.); (J.L.); (X.W.)
| | - Shuming Tan
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China; (L.X.); (L.Y.); (J.C.); (Z.T.); (J.L.); (X.W.)
| | - Xiaodan Wang
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China; (L.X.); (L.Y.); (J.C.); (Z.T.); (J.L.); (X.W.)
- Guizhou Provincial Key Laboratory of Fermentation Engineering and Biological Pharmacy, Guizhou University, Guiyang 550025, China
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26
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Wu Y, Zhang J, Long B, Zhang H. The Thermodynamic Stability, Electronic and Photocatalytic Properties of the ZnWO 4(100) Surface as Predicted by Screened Hybrid Density Functional Theory. ACS Omega 2021; 6:15057-15067. [PMID: 34151086 PMCID: PMC8210413 DOI: 10.1021/acsomega.1c01214] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Accepted: 05/20/2021] [Indexed: 06/13/2023]
Abstract
Zinc tungstate (ZnWO4) is an outstanding photocatalyst for water splitting and organic contaminant degradation under visible light irradiation. Surface termination stabilities are significant for understanding the photochemical oxidation and reactions on the ZnWO4 surface. Based on density functional theory, we calculated the thermodynamic stability of possible surface terminations for ZnWO4(100). The surface stability phase diagrams show that the Zn2O4-Zn8W6O28, W2O4-Zn8W10O36, and Zn2-Zn8W6O24 terminations of ZnWO4(100) can be stabilized under certain thermodynamic equilibrium conditions. The electronic structures for these three possible stability surface terminations are calculated based on the Heyd-Scuseria-Ernzerhof (HSE06) hybrid functional to give dependable theoretical band gap values. It is found that the surface states of W2O4-Zn8W10O36 termination are in the band gap, which shows a delocalized performance. The calculated absorption coefficients of W2O4-Zn8W10O36 termination show stronger absorption than bulk ZnWO4 in the visible-light region. The band edge calculation shows that the valence band maximum and conduction band minimum of the W2O4-Zn8W10O36 termination can fulfill the hydrogen evolution reaction and oxygen evolution reaction requirements at the same time. Furthermore, work functions are extraordinarily distinct for various surface terminations. This result suggests that the ZnWO4-based direct Z-scheme heterostructure can be controlled by obtaining the thermodynamically preferred surface termination under suitable conditions. Our results can predict ZnWO4(100) surface structures and properties under the entire range of accessible environmental conditions.
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Affiliation(s)
- Yonggang Wu
- College
of Physics, Sichuan University, Sichuan 610065, China
- School
of Physics and Electronic Science, Guizhou
Education University, Guiyang 550018, China
| | - Jihua Zhang
- Guizhou
Provincial Key Laboratory of Computational Nano-Material Science, Guizhou Education University, Guiyang 550018, China
| | - Bingwei Long
- College
of Physics, Sichuan University, Sichuan 610065, China
| | - Hong Zhang
- College
of Physics, Sichuan University, Sichuan 610065, China
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27
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He Y, Zhao H, Liu Y, Zhou H. Specific and rapid reverse assaying protocol for detection and antimicrobial susceptibility testing of Pseudomonas aeruginosa based on dual molecular recognition. Sci Rep 2021; 11:11101. [PMID: 34045567 PMCID: PMC8159986 DOI: 10.1038/s41598-021-90619-3] [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] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 05/11/2021] [Indexed: 01/11/2023] Open
Abstract
The worldwide emergence and spread of antimicrobial resistance is accelerated by irrational administration and use of empiric antibiotics. A key point to the crisis is a lack of rapid diagnostic protocols for antimicrobial susceptibility testing (AST), which is crucial for a timely and rational antibiotic prescription. Here, a recombinant bacteriophage tail fiber protein (TFP) was functionalized on magnetic particles to specifically capture Pseudomonas aeruginosa, while fluorescein isothiocyanate-labeled-magainin II was utilized as the indicator. For solving the magnetic particles' blocking effects, a reverse assaying protocol based on TFP recognition was developed to investigate the feasibility of detection and AST of P. aeruginosa. P. aeruginosa can be rapidly, sensitively and specifically detected within 1.5 h with a linear range of 1.0 × 102 to 1.0 × 106 colony forming units (CFU)⋅mL-1 and a detection limit of 3.3 × 10 CFU⋅mL-1. Subsequently, AST results, which were consistent with broth dilution results, can be obtained within 3.5 h. Due to the high specificity of the TFP, AST can actually be conducted without the need for bacterial isolation and identification. Based on the proof-of-principle work, the detection and AST of other pathogens can be extended by expressing the TFPs of their bacteriophages.
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Affiliation(s)
- Yong He
- Department of Pharmacy, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China.
| | - Hang Zhao
- Department of Pharmacy, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China
| | - Yuanwen Liu
- Department of Pharmacy, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China
| | - He Zhou
- Zunyi Institute for Food and Drug Control, Zunyi, 563000, China.
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28
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Shi TX, Li RY, Zheng R, Chen QF, Li HY, Huang J, Zhu LW, Liang CG. Mapping QTLs for 1000-grain weight and genes controlling hull type using SNP marker in Tartary buckwheat (Fagopyrum tataricum). BMC Genomics 2021; 22:142. [PMID: 33639857 PMCID: PMC7913328 DOI: 10.1186/s12864-021-07449-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 02/16/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Tartary buckwheat (Fagopyrum tataricum), an important pseudocereal crop, has high economic value due to its nutritional and medicinal properties. However, dehulling of Tartary buckwheat is difficult owing to its thick and tough hull, which has greatly limited the development of the Tartary buckwheat processing industry. The construction of high-resolution genetic maps serves as a basis for identifying quantitative trait loci (QTLs) and qualitative trait genes for agronomic traits. In this study, a recombinant inbred lines (XJ-RILs) population derived from a cross between the easily dehulled Rice-Tartary type and Tartary buckwheat type was genotyped using restriction site-associated DNA (RAD) sequencing to construct a high-density SNP genetic map. Furthermore, QTLs for 1000-grain weight (TGW) and genes controlling hull type were mapped in multiple environments. RESULTS In total, 4151 bin markers comprising 122,185 SNPs were used to construct the genetic linkage map. The map consisted of 8 linkage groups and covered 1444.15 cM, with an average distance of 0.35 cM between adjacent bin markers. Nine QTLs for TGW were detected and distributed on four loci on chromosome 1 and 4. A major locus detected in all three trials was mapped in 38.2-39.8 cM region on chromosome 1, with an LOD score of 18.1-37.0, and explained for 23.6-47.5% of the phenotypic variation. The genes controlling hull type were mapped to chromosome 1 between marker Block330 and Block331, which was closely followed by the major locus for TGW. The expression levels of the seven candidate genes controlling hull type present in the region between Block330 and Block336 was low during grain development, and no significant difference was observed between the parental lines. Six non-synonymous coding SNPs were found between the two parents in the region. CONCLUSIONS We constructed a high-density SNP genetic map for the first time in Tartary buckwheat. The mapped major loci controlling TGW and hull type will be valuable for gene cloning and revealing the mechanism underlying grain development and easy dehulling, and marker-assisted selection in Tartary buckwheat.
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Affiliation(s)
- Tao-Xiong Shi
- Research Center of Buckwheat Industry Technology, Guizhou Normal University, Guiyang, 550001, Guizhou, China.
| | - Rui-Yuan Li
- Key Laboratory of Information and Computing Science of Guizhou Province, Guizhou Normal University, Guiyang, 550001, Guizhou, China
| | - Ran Zheng
- Research Center of Buckwheat Industry Technology, Guizhou Normal University, Guiyang, 550001, Guizhou, China
| | - Qing-Fu Chen
- Research Center of Buckwheat Industry Technology, Guizhou Normal University, Guiyang, 550001, Guizhou, China
| | - Hong-You Li
- Research Center of Buckwheat Industry Technology, Guizhou Normal University, Guiyang, 550001, Guizhou, China
| | - Juan Huang
- Research Center of Buckwheat Industry Technology, Guizhou Normal University, Guiyang, 550001, Guizhou, China
| | - Li-Wei Zhu
- Research Center of Buckwheat Industry Technology, Guizhou Normal University, Guiyang, 550001, Guizhou, China
| | - Cheng-Gang Liang
- Research Center of Buckwheat Industry Technology, Guizhou Normal University, Guiyang, 550001, Guizhou, China
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29
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Liu H, Chen H, Ding G, Li K, Wang Y. Proteomic Insight into the Symbiotic Relationship of Pinus massoniana Lamb and Suillus luteus towards Developing Al-Stress Resistance. Life (Basel) 2021; 11:177. [PMID: 33672434 PMCID: PMC7926926 DOI: 10.3390/life11020177] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 02/18/2021] [Accepted: 02/20/2021] [Indexed: 12/30/2022] Open
Abstract
Global warming significantly impacts forest range areas by increasing soil acidification or aluminum toxicity. Aluminum (Al) toxicity retards plant growth by inhibiting the root development process, hindering water uptake, and limiting the bioavailability of other essential micronutrients. Pinus massoniana (masson pine), globally recognized as a reforestation plant, is resistant to stress conditions including biotic and abiotic stresses. This resistance is linked to the symbiotic relationship with diverse ectomycorrhizal fungal species. In the present study, we investigated the genetic regulators as expressed proteins, conferring a symbiotic relationship between Al-stress resistance and Suillus luteus in masson pine. Multi-treatment trials resulted in the identification of 12 core Al-stress responsive proteins conserved between Al stress conditions with or without S. luteus inoculation. These proteins are involved in chaperonin CPN60-2, protein refolding and ATP-binding, Cu-Zn-superoxide dismutase precursor, oxidation-reduction process, and metal ion binding, phosphoglycerate kinase 1, glycolytic process, and metabolic process. Furthermore, 198 Al responsive proteins were identified specifically under S. luteus-inoculation and are involved in gene regulation, metabolic process, oxidation-reduction process, hydrolase activity, and peptide activity. Chlorophyll a-b binding protein, endoglucanase, putative spermidine synthase, NADH dehydrogenase, and glutathione-S-transferase were found with a significant positive expression under a combined Al and S. luteus treatment, further supported by the up-regulation of their corresponding genes. This study provides a theoretical foundation for exploiting the regulatory role of ectomycorrhizal inoculation and associated genetic changes in resistance against Al stress in masson pine.
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Affiliation(s)
- Haiyan Liu
- Institute for Forest Resources & Environment of Guizhou, Guiyang 550025, China; (H.L.); (H.C.); (K.L.)
- Guizhou Botanical Garden, Guiyang 550004, China;
| | - Houying Chen
- Institute for Forest Resources & Environment of Guizhou, Guiyang 550025, China; (H.L.); (H.C.); (K.L.)
| | - Guijie Ding
- Institute for Forest Resources & Environment of Guizhou, Guiyang 550025, China; (H.L.); (H.C.); (K.L.)
| | - Kuaifen Li
- Institute for Forest Resources & Environment of Guizhou, Guiyang 550025, China; (H.L.); (H.C.); (K.L.)
| | - Yao Wang
- Guizhou Botanical Garden, Guiyang 550004, China;
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Wang L, Cao Y, Tian Y, Luo G, Yang X, Sun Z. Urine can speed up the re-epithelialization process of prostatic urethra wounds by promoting the proliferation and migration of prostate epithelial cells. Int Urol Nephrol 2018; 51:9-15. [PMID: 30402718 PMCID: PMC6327002 DOI: 10.1007/s11255-018-2019-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 10/24/2018] [Indexed: 11/29/2022]
Abstract
Objectives The present study aimed to investigate the influence of urine on re-epithelialization in canine prostatic urethra after prostatectomy and explore possible causes. Method We established two groups of prostatic canine models. The first group contained urine that canines underwent the surgery by two-micron laser resection of the prostate-tangerine technique (TmLRP-TT), and no transurethral catheter was required. The second group was without urine that canines accepted the surgery by TmLRP-TT add ureter skin ostomy urine bypass. Histopathology of re-epithelialization of repair in trauma in canine prostatic urethra was observed by hematoxylin and eosin (HE) staining, and immunochemistry was used to determine the expression of transforming growth factor-β1 (TGF-β1). Human prostate epithelial line (BPH-1) cells were cultured with or without urine and the abilities of proliferation and migration were tested by CCK-8 and transwell assays, respectively. Results The histology displayed that there was distinct proliferation of prostatic cell under the wound after 3 days, re-epithelialization began after 9 days, and finished after 28 days at urine group. The TGF-β1 like-IR in prostatic epithelium cells and fibroblast cells under the wound at urine group were strikingly increased as compared with the cells at no urine group after 3, 9, and 11 days, respectively (p < 0.05). In CCK-8 and Transwell assays, an increase of cells’ proliferation and migration was detected in urine culture group compared with no urine culture group (p < 0.05). Conclusion Urine may speed up the re-epithelialization process for prostatic urethra wounds by promoting proliferation and migration of prostate epithelial cells.
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Affiliation(s)
- Lixin Wang
- Guizhou Provincial People's Hospital, Guiyang, Guizhou, China
- Guizhou Medical University, Guiyang, China
| | - Ying Cao
- Guizhou Provincial People's Hospital, Guiyang, Guizhou, China.
| | - Ye Tian
- Guizhou Provincial People's Hospital, Guiyang, Guizhou, China
| | - Guangheng Luo
- Guizhou Provincial People's Hospital, Guiyang, Guizhou, China
| | - Xiushu Yang
- Guizhou Provincial People's Hospital, Guiyang, Guizhou, China
| | - Zhaolin Sun
- Guizhou Provincial People's Hospital, Guiyang, Guizhou, China
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Zhang XN, Guo JJ, Zou X, Jin DC. Pathogenic differences of the entomopathogenic fungus Isaria cateniannulata to the spider mite Tetranychus urticae (Trombidiformes: Tetranychidae) and its predator Euseius nicholsi (Mesostigmata: Phytoseiidae). Exp Appl Acarol 2018; 75:69-84. [PMID: 29611070 PMCID: PMC5895693 DOI: 10.1007/s10493-018-0247-x] [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] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 03/17/2018] [Indexed: 05/17/2023]
Abstract
Isaria cateniannulata and Euseius nicholsi are two important biological control agents currently being used in many areas of China to control a variety of pests. In order to determine the possibility of a concomitant application with the two agents in a biocontrol program involving the two-spotted spider mite, Tetranychus urticae, we quantified the pathogenicity of a strain of I. cateniannulata (08XS-1) against females of both T. urticae and E. nicholsi. We observed the infection process using scanning electron microscopy and fluorescence microscopy to distinguish differences in fungal performance. The female mites were infected by I. cateniannulata at 2 × 107 conidia/ml. The mortality of T. urticae was 100% when treated with submerged conidia and 92% when treated with aerial conidia (spray), and that of E. nicholsi was 4.2 and 6.7%, correspondingly. Following infection with aerial or submerged conidia, mated E. nicholsi females displayed no significant differences between treatments and control, indicating the fungus had no obvious effect on their vitality and fertility. This demonstrates that I. cateniannulata is safe to E. nicholsi when used to control T. urticae. The two types of propagules of I. cateniannulata are readily produced by common culture, and the submerged conidia, because of their substantially higher mortality, are preferable to the aerial conidia. Our results indicate that I. cateniannulata and E. nicholsi are viable candidates to be concomitantly applied in the biocontrol programs of T. urticae.
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Affiliation(s)
- Xiao-Na Zhang
- Institute of Entomology, The Provincial Key Laboratory for Agricultural Pest Management of Mountainous Region, The Provincial Special Key Laboratory for Development and Utilization of Insect Resources, Scientific Observing and Experimental Station of Crop Pest in Guiyang, Ministry of Agriculture, Guizhou University, Guiyang, 550005 Guizhou, China
- Research Center of Buckwheat Industry Technology, Guizhou Normal University, Guiyang, 550005, Guizhou, China
| | - Jian-Jun Guo
- Institute of Entomology, The Provincial Key Laboratory for Agricultural Pest Management of Mountainous Region, The Provincial Special Key Laboratory for Development and Utilization of Insect Resources, Scientific Observing and Experimental Station of Crop Pest in Guiyang, Ministry of Agriculture, Guizhou University, Guiyang, 550005 Guizhou, China
| | - Xiao Zou
- Institute of Fungal Resources, Guizhou University, Guiyang, 550025, Guizhou, China
| | - Dao-Chao Jin
- Institute of Entomology, The Provincial Key Laboratory for Agricultural Pest Management of Mountainous Region, The Provincial Special Key Laboratory for Development and Utilization of Insect Resources, Scientific Observing and Experimental Station of Crop Pest in Guiyang, Ministry of Agriculture, Guizhou University, Guiyang, 550005 Guizhou, China.
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Lin Y, Zhang J, Gao W, Chen Y, Li H, Lawlor DW, Paul MJ, Pan W. Exogenous trehalose improves growth under limiting nitrogen through upregulation of nitrogen metabolism. BMC Plant Biol 2017; 17:247. [PMID: 29258443 PMCID: PMC5738064 DOI: 10.1186/s12870-017-1207-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [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: 07/29/2017] [Accepted: 12/08/2017] [Indexed: 05/03/2023]
Abstract
BACKGROUND The trehalose (Tre) pathway has strong effects on growth and development in plants through regulation of carbon metabolism. Altering either Tre or trehalose 6-phosphate (T6P) can improve growth and productivity of plants as observed under different water availability. As yet, there are no reports of the effects of modification of Tre orT6P on plant performance under limiting nutrition. RESULTS Here we report that nitrogen (N) metabolism is positively affected by exogenous application of Tre in nitrogen-deficient growing conditions. Spraying foliage of tobacco (Nicotiana tabacum) with trehalose partially alleviated symptoms of nitrogen deficiency through upregulation of nitrate and ammonia assimilation and increasing activities of nitrate reductase (NR), glycolate oxidase (GO), glutamine synthetase (GS) and glutamine oxoglutarate aminotransferase (GOGAT) with concomitant changes in ammonium (NH4+) and nitrate (NO3-) concentrations, glutamine and amino acids. Chlorophyll and total nitrogen content of leaves and rates of photosynthesis were increased compared to nitrogen-deficient plants without applied Tre. Total plant biomass accumulation was also higher in Tre -fed nitrogen-deficient plants, with a smaller proportion of dry weight partitioned to roots, compared to nitrogen-deficient plants without applied Tre. Consistent with higher nitrogen assimilation and growth, Tre application reduced foliar starch. Minimal effects of Tre feeding were observed on nitrogen-sufficient plants. CONCLUSIONS The data show, for the first time, significant stimulatory effects of exogenous Tre on nitrogen metabolism and growth in plants growing under deficient nitrogen. Under such adverse conditions metabolism is regulated for survival rather than productivity. Application of Tre can alter this regulation towards maintenance of productive functions under low nitrogen. This has implications for considering approaches to modifying the Tre pathway for to improve crop nitrogen-use efficiency and production.
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Affiliation(s)
- Yingchao Lin
- Guizhou Academy of Tobacco Science, Guiyang, 550081, People's Republic of China.
- Upland Flue-Cured Tobacco Quality and Ecology Key Laboratory of China Tobacco, Guiyang, 550081, People's Republic of China.
| | - Jie Zhang
- Guizhou Academy of Tobacco Science, Guiyang, 550081, People's Republic of China
| | - Weichang Gao
- Guizhou Academy of Tobacco Science, Guiyang, 550081, People's Republic of China
- Upland Flue-Cured Tobacco Quality and Ecology Key Laboratory of China Tobacco, Guiyang, 550081, People's Republic of China
| | - Yi Chen
- Guizhou Academy of Tobacco Science, Guiyang, 550081, People's Republic of China
- Upland Flue-Cured Tobacco Quality and Ecology Key Laboratory of China Tobacco, Guiyang, 550081, People's Republic of China
| | - Hongxun Li
- Guizhou Academy of Tobacco Science, Guiyang, 550081, People's Republic of China
- Upland Flue-Cured Tobacco Quality and Ecology Key Laboratory of China Tobacco, Guiyang, 550081, People's Republic of China
| | - David W Lawlor
- Formerly Rothamsted Research, Harpenden, Hertfordshire, AL5 2JQ, UK
| | - Matthew J Paul
- Plant Science, Rothamsted Research, Harpenden, Hertfordshire, AL5 2JQ, UK
| | - Wenjie Pan
- Guizhou Academy of Tobacco Science, Guiyang, 550081, People's Republic of China
- Upland Flue-Cured Tobacco Quality and Ecology Key Laboratory of China Tobacco, Guiyang, 550081, People's Republic of China
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Han P, Huang Y, Xie Y, Yang W, Wang Y, Xiang W, Hylands PJ, Legido-Quigley C. Metabolic phenotyping in the mouse model of urinary tract infection shows that 3-hydroxybutyrate in plasma is associated with infection. PLoS One 2017; 12:e0186497. [PMID: 29036204 PMCID: PMC5643114 DOI: 10.1371/journal.pone.0186497] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 10/03/2017] [Indexed: 02/08/2023] Open
Abstract
Urinary tract infection is one of the most common bacterial infections worldwide. Current diagnosis of urinary tract infection chiefly relies on its clinical presentation, urine dipstick tests and urine culture. Small molecules found in bio-fluids related with both infection and recovery would facilitate diagnosis and management of UTI. Mass spectrometry-based fingerprinting of plasma and urine at 3 time points, pre-infection (t = -24h), infection (t = 24h) and post 3-day treatment (t = 112h), were acquired in the following four groups: mice which were healthy, infected but not treated, infected and treated with ciprofloxacin, and infected and treated with Relinqing® granules (n = 6 per group). A metabolomics workflow including multivariate analysis and ROC regression was employed to select metabolic features that correlated with UTI and its treatment. Circa 4,000 molecular features were acquired for each sample. The small acid 3-hydroxybutyrate in plasma was found to be differentiated for urinary tract infection, with an area under the curve = 0.97 (95% confidence interval: 0.93–1.00, accuracy = 0.91, sensitivity = 0.92 and specificity = 0.91). The level of 3-hydroxybutyrate in plasma was depleted after infection with a fold change of -22 (q < 0.0001). Correlation between plasma 3-hydroxybutyrate and urine bacterial number in all groups and time points was r = -0.753 (p < 0.0001). The findings show that 3-hydroxybutyrate is depleted in blood and strongly associated with UTI at both infection and post-treatment stage in a UTI mouse model. Further work is envisaged to assess the clinical potential of blood tests to assist with UTI management.
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Affiliation(s)
- Pei Han
- Institute of Pharmaceutical Science, Faculty of Life Sciences & Medicine, King’s College London, London, United Kingdom
| | - Yong Huang
- Provincial Key Laboratory of Pharmaceutics in Guizhou Province, School of Pharmacy, Guiyang Medical University, Guiyang, Guizhou, China
| | - Yumin Xie
- Provincial Key Laboratory of Pharmaceutics in Guizhou Province, School of Pharmacy, Guiyang Medical University, Guiyang, Guizhou, China
| | - Wu Yang
- Provincial Key Laboratory of Pharmaceutics in Guizhou Province, School of Pharmacy, Guiyang Medical University, Guiyang, Guizhou, China
| | - Yaoyao Wang
- Institute of Pharmaceutical Science, Faculty of Life Sciences & Medicine, King’s College London, London, United Kingdom
| | - Wenying Xiang
- Provincial Key Laboratory of Pharmaceutics in Guizhou Province, School of Pharmacy, Guiyang Medical University, Guiyang, Guizhou, China
| | - Peter J. Hylands
- Institute of Pharmaceutical Science, Faculty of Life Sciences & Medicine, King’s College London, London, United Kingdom
- * E-mail: (CLQ); (PJH)
| | - Cristina Legido-Quigley
- Institute of Pharmaceutical Science, Faculty of Life Sciences & Medicine, King’s College London, London, United Kingdom
- * E-mail: (CLQ); (PJH)
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Cai M, Yang S, Zhao C, Zhou Q, Hou L. Insight into runoff characteristics using hydrological modeling in the data-scarce southern Tibetan Plateau: Past, present, and future. PLoS One 2017; 12:e0176813. [PMID: 28486483 PMCID: PMC5423604 DOI: 10.1371/journal.pone.0176813] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 04/18/2017] [Indexed: 11/18/2022] Open
Abstract
Regional hydrological modeling in ungauged regions has attracted growing attention in water resources research. The southern Tibetan Plateau often suffers from data scarcity in watershed hydrological simulation and water resources assessment. This hinders further research characterizing the water cycle and solving international water resource issues in the area. In this study, a multi-spatial data based Distributed Time-Variant Gain Model (MS-DTVGM) is applied to the Yarlung Zangbo River basin, an important international river basin in the southern Tibetan Plateau with limited meteorological data. This model is driven purely by spatial data from multiple sources and is independent of traditional meteorological data. Based on the methods presented in this study, daily snow cover and potential evapotranspiration data in the Yarlung Zangbo River basin in 2050 are obtained. Future (2050) climatic data (precipitation and air temperature) from the Fifth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC-AR5) are used to study the hydrological response to climate change. The result shows that river runoff will increase due to precipitation and air temperature changes by 2050. Few differences are found between daily runoff simulations from different Representative Concentration Pathway (RCP) scenarios (RCP2.6, RCP4.5 and RCP8.5) for 2050. Historical station observations (1960-2000) at Nuxia and model simulations for two periods (2006-2009 and 2050) are combined to study inter-annual and intra-annual runoff distribution and variability. The inter-annual runoff variation is stable and the coefficient of variation (CV) varies from 0.21 to 0.27. In contrast, the intra-annual runoff varies significantly with runoff in summer and autumn accounting for more than 80% of the total amount. Compared to the historical period (1960-2000), the present period (2006-2009) has a slightly uneven intra-annual runoff temporal distribution, and becomes more balanced in the future (2050).
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Affiliation(s)
- Mingyong Cai
- Satellite Environment Center of MEP, Beijing, China
| | - Shengtian Yang
- College of Water Sciences, Beijing Normal University, Beijing, China
- College of Resource and Environment Sciences, Xinjiang University, Urumqi, China
- * E-mail:
| | - Changsen Zhao
- College of Water Sciences, Beijing Normal University, Beijing, China
| | - Qiuwen Zhou
- School of Geography and Environment Science, Guizhou Normal University, Guiyang, China
| | - Lipeng Hou
- China-ASEAN Environmental Cooperation Center (China Center for SCO Environmental Cooperation) of MEP, Beijing, China
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Xu X, Liu X, Long J, Hu Z, Zheng Q, Zhang C, Li L, Wang Y, Jia Y, Qiu W, Zhou J, Yao W, Zeng Z. Interleukin-10 reorganizes the cytoskeleton of mature dendritic cells leading to their impaired biophysical properties and motilities. PLoS One 2017; 12:e0172523. [PMID: 28234961 PMCID: PMC5325303 DOI: 10.1371/journal.pone.0172523] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 02/06/2017] [Indexed: 12/16/2022] Open
Abstract
Interlukin-10 (IL-10) is an immunomodulatory cytokine which predominantly induces immune-tolerance. It has been also identified as a major cytokine in the tumor microenvironment that markedly mediates tumor immune escape. Previous studies on the roles of IL-10 in tumor immunosuppression mainly focus on its biochemical effects. But the effects of IL-10 on the biophysical characteristics of immune cells are ill-defined. Dendritic cells (DCs) are the most potent antigen-presenting cells and play a key role in the anti-tumor immune response. IL-10 can affect the immune regulatory functions of DCs in various ways. In this study, we aim to explore the effects of IL-10 on the biophysical functions of mature DCs (mDCs). mDCs were treated with different concentrations of IL-10 and their biophysical characteristics were identified. The results showed that the biophysical properties of mDCs, including electrophoresis mobility, osmotic fragility and deformability, as well as their motilities, were impaired by IL-10. Meanwhile, the cytoskeleton (F-actin) of mDCs was reorganized by IL-10. IL-10 caused the alternations in the expressions of fasin1 and profilin1 as well as the phosphorylation of cofilin1 in a concentration-dependent fashion. Moreover, Fourier transformed infrared resonance data showed that IL-10 made the status of gene transcription and metabolic turnover of mDCs more active. These results demonstrate a new aspect of IL-10's actions on the immune system and represent one of the mechanisms for immune escape of tumors. It may provide a valuable clue to optimize and improve the efficiency of DC-based immunotherapy against cancer.
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Affiliation(s)
- Xiaoli Xu
- Key Laboratory of Biology and Medical Engineering, Guizhou Medical University, Guiyang, P.R. China
- Engineering Center of Medical Biotechnology Application, Guizhou Medical University, Guiyang, P.R. China
- School of Biology and Engineering, Guizhou Medical University, Guiyang, P.R. China
- Hemorheology Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, P.R.China
| | - Xianmei Liu
- Key Laboratory of Biology and Medical Engineering, Guizhou Medical University, Guiyang, P.R. China
- Engineering Center of Medical Biotechnology Application, Guizhou Medical University, Guiyang, P.R. China
- School of Biology and Engineering, Guizhou Medical University, Guiyang, P.R. China
- Hemorheology Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, P.R.China
| | - Jinhua Long
- Department of Head and Neck, Affiliated Cancer Hospital, Guizhou Medical University, Guiyang, P.R.China
| | - Zuquan Hu
- Key Laboratory of Biology and Medical Engineering, Guizhou Medical University, Guiyang, P.R. China
- Engineering Center of Medical Biotechnology Application, Guizhou Medical University, Guiyang, P.R. China
- School of Biology and Engineering, Guizhou Medical University, Guiyang, P.R. China
| | - Qinni Zheng
- Key Laboratory of Biology and Medical Engineering, Guizhou Medical University, Guiyang, P.R. China
| | - Chunlin Zhang
- Engineering Center of Medical Biotechnology Application, Guizhou Medical University, Guiyang, P.R. China
| | - Long Li
- Department of Nephropathy & Rheumatism, Third Affiliated Hospital, Guizhou Medical University, Duyun, P.R.China
| | - Yun Wang
- Key Laboratory of Biology and Medical Engineering, Guizhou Medical University, Guiyang, P.R. China
- Engineering Center of Medical Biotechnology Application, Guizhou Medical University, Guiyang, P.R. China
- School of Biology and Engineering, Guizhou Medical University, Guiyang, P.R. China
| | - Yi Jia
- Key Laboratory of Biology and Medical Engineering, Guizhou Medical University, Guiyang, P.R. China
- Engineering Center of Medical Biotechnology Application, Guizhou Medical University, Guiyang, P.R. China
- School of Biology and Engineering, Guizhou Medical University, Guiyang, P.R. China
| | - Wei Qiu
- Key Laboratory of Biology and Medical Engineering, Guizhou Medical University, Guiyang, P.R. China
- Engineering Center of Medical Biotechnology Application, Guizhou Medical University, Guiyang, P.R. China
- School of Biology and Engineering, Guizhou Medical University, Guiyang, P.R. China
| | - Jing Zhou
- Key Laboratory of Biology and Medical Engineering, Guizhou Medical University, Guiyang, P.R. China
- Engineering Center of Medical Biotechnology Application, Guizhou Medical University, Guiyang, P.R. China
- School of Biology and Engineering, Guizhou Medical University, Guiyang, P.R. China
| | - Weijuan Yao
- Hemorheology Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, P.R.China
| | - Zhu Zeng
- Key Laboratory of Biology and Medical Engineering, Guizhou Medical University, Guiyang, P.R. China
- Engineering Center of Medical Biotechnology Application, Guizhou Medical University, Guiyang, P.R. China
- School of Biology and Engineering, Guizhou Medical University, Guiyang, P.R. China
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