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Yang Z, Zhang Z, Li L, Jing Z, Ma Y, Lan T, Li Y, Lin Z, Fang W, Zhang J, Zhang J, Liang X, Wu B, Zheng Y, Zhang X. Bioengineered Artificial Extracellular Vesicles Presenting PD-L1 and Gal-9 Ameliorate New-onset Type 1 Diabetes. Diabetes 2024:db230987. [PMID: 38771941 DOI: 10.2337/db23-0987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Accepted: 05/05/2024] [Indexed: 05/23/2024]
Abstract
An important factor in the development of Type 1 diabetes (T1D) is the deficiency of inhibitory immune checkpoint ligands, specifically programmed cell death ligand 1 (PD-L1) and Galectin-9 (Gal-9), in β-cells. Hence, modulation of the pancreas infiltrated T lymphocytes by exogenous PD-L1 or Gal-9 is an ideal approach for treating the new-onset T1D. Herein, we genetic engineered the macrophage cells to generate artificial extracellular vesicles (aEVs) overexpressing PD-L1 and Gal-9, which could restrict the islets autoreactive T lymphocytes and protect β-cells from destruction. Intriguingly, overexpressing Gal-9 spurred macrophage polarization to M2 phenotype with immune suppressive attribute. Alternatively, both of PD-L1 and Gal-9 presenting aEVs (PD-L1-Gal-9 aEVs) favorably adhere to T cells via the interaction of programmed cell death protein 1 (PD-1)/PD-L1 or T cell immunoglobulin mucin 3 (TIM-3)/Gal-9. Moreover, PD-L1-Gal-9 aEVs prominently promoted effector T cell apoptosis and splenic regulatory T cells (Treg) cells differentiation in vitro. Virtually, PD-L1-Gal-9 aEVs efficaciously reversed the new-onset hyperglycemia in the NOD mice, prevented T1D progress, and declined the proportion and activation of CD4+ and CD8+ T cells infiltrating the pancreas notably, which together contributed to preserving the residual β-cells survival and mitigating the hyperglycemia.
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Affiliation(s)
- Zhaoxin Yang
- Shenzhen Key Laboratory for Systems Medicine in Inflammatory Diseases, School of Medicine, Shenzhen Campus of Sun Yat-Sen University, Sun Yat-Sen University, Shenzhen, 518107, Guangdong, China
| | - Zhirang Zhang
- Shenzhen Key Laboratory for Systems Medicine in Inflammatory Diseases, School of Medicine, Shenzhen Campus of Sun Yat-Sen University, Sun Yat-Sen University, Shenzhen, 518107, Guangdong, China
| | - Liyan Li
- Shenzhen Key Laboratory for Systems Medicine in Inflammatory Diseases, School of Medicine, Shenzhen Campus of Sun Yat-Sen University, Sun Yat-Sen University, Shenzhen, 518107, Guangdong, China
| | - Zhangyan Jing
- Shenzhen Key Laboratory for Systems Medicine in Inflammatory Diseases, School of Medicine, Shenzhen Campus of Sun Yat-Sen University, Sun Yat-Sen University, Shenzhen, 518107, Guangdong, China
| | - Yumeng Ma
- Shenzhen Key Laboratory for Systems Medicine in Inflammatory Diseases, School of Medicine, Shenzhen Campus of Sun Yat-Sen University, Sun Yat-Sen University, Shenzhen, 518107, Guangdong, China
| | - Tianyu Lan
- Shenzhen Key Laboratory for Systems Medicine in Inflammatory Diseases, School of Medicine, Shenzhen Campus of Sun Yat-Sen University, Sun Yat-Sen University, Shenzhen, 518107, Guangdong, China
| | - Yuan Li
- Shenzhen Key Laboratory for Systems Medicine in Inflammatory Diseases, School of Medicine, Shenzhen Campus of Sun Yat-Sen University, Sun Yat-Sen University, Shenzhen, 518107, Guangdong, China
| | - Zhongda Lin
- Shenzhen Key Laboratory for Systems Medicine in Inflammatory Diseases, School of Medicine, Shenzhen Campus of Sun Yat-Sen University, Sun Yat-Sen University, Shenzhen, 518107, Guangdong, China
| | - Wenli Fang
- Shenzhen Key Laboratory for Systems Medicine in Inflammatory Diseases, School of Medicine, Shenzhen Campus of Sun Yat-Sen University, Sun Yat-Sen University, Shenzhen, 518107, Guangdong, China
| | - Jinxie Zhang
- Shenzhen Key Laboratory for Systems Medicine in Inflammatory Diseases, School of Medicine, Shenzhen Campus of Sun Yat-Sen University, Sun Yat-Sen University, Shenzhen, 518107, Guangdong, China
| | - Jinling Zhang
- Department of Gynaecology, The Second Clinical Medical College of Jinan University, Shenzhen People's Hospital, Shenzhen, China
| | - Xin Liang
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Key Laboratory of Stem Cell and Regenerative Tissue Engineering, School of Basic Medical Sciences, Guangdong Medical University, Dongguan 523808, China
| | - Benqing Wu
- Center for Experimental Medicine (CEM), Benqing laboratory, Shenzhen Guangming District People's Hospital, Shenzhen 518000, China
| | - Yi Zheng
- Center for Experimental Medicine (CEM), Benqing laboratory, Shenzhen Guangming District People's Hospital, Shenzhen 518000, China
| | - Xudong Zhang
- Shenzhen Key Laboratory for Systems Medicine in Inflammatory Diseases, School of Medicine, Shenzhen Campus of Sun Yat-Sen University, Sun Yat-Sen University, Shenzhen, 518107, Guangdong, China
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Cong S, Lan T, Wang Y, Zu L, Dong S, Zhang Z, Xu J. Titanium Dioxide and Calcium Sulfate Whiskers Are Used for the Preparation of High Performance Polypropylene and Reduce White Pollution. Langmuir 2024. [PMID: 38739782 DOI: 10.1021/acs.langmuir.4c00547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
The anti-aging agent TiO2-polyacrylonitrile (PAN) and the mechanical strengthening agent CSW-PAN were prepared by radical polymerization using rutile nano-titanium dioxide (TiO2) and anhydrous calcium sulfate whisker (CSW) as raw materials. The structures of TiO2-PAN and CSW-PAN were characterized using Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). Simultaneously, the mechanical properties, aging properties, and thermal stability of TiO2-PAN/CSW-PAN/polypropylene (PP) composites were studied, and the results showed that the surfaces of nano-titanium dioxide and calcium sulfate whiskers were successfully grafted with acrylonitrile. Owing to the introduction of new elements, such as acrylonitrile, nano-titanium dioxide and calcium sulfate whiskers have anti-aging properties. In comparison of the impact strength and tensile strength of TiO2-PAN/PP and TiO2-PAN/CSW-PAN/PP before aging, it can be proven that adding CSW-PAN can significantly enhance the mechanical properties of TiO2-PAN/CSW-PAN/PP. After 1000 h of aging, the tensile strength of the ternary composite TiO2-PAN/CSW-PAN/PP was 19.88 MPa when the addition amount of TiO2-PAN and CSW-PAN was 3%. Moreover, the impact strength of the ternary composite material TiO2-PAN/CSW-PAN/PP after 1000 h of aging is even better than that of non-aging pure PP materials, proving that the service life of improved PP products is extended, unnecessary waste and environmental pollution can be relieved, and the needs of specific engineering fields can be met.
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Affiliation(s)
- Shanshan Cong
- School of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, Heilongjiang 161006, People's Republic of China
- College of Materials Science and Engineering, Qiqihar University, Qiqihar, Heilongjiang 161006, People's Republic of China
| | - Tianyu Lan
- College of Materials Science and Engineering, Qiqihar University, Qiqihar, Heilongjiang 161006, People's Republic of China
- Northeast Petroleum University Applied Technology Research Institute, Northeast Petroleum University, Daqing, Heilongjiang 163318, People's Republic of China
- Colege of Materials Science and Engineering, Heilongjiang Province Key Laboratory of Polmeric Composition Material, Qiqihar University, Qiqihar, Heilongjiang 161006, People's Republic of China
| | - Yazhen Wang
- Colege of Materials Science and Engineering, Heilongjiang Province Key Laboratory of Polmeric Composition Material, Qiqihar University, Qiqihar, Heilongjiang 161006, People's Republic of China
| | - Liwu Zu
- Colege of Materials Science and Engineering, Heilongjiang Province Key Laboratory of Polmeric Composition Material, Qiqihar University, Qiqihar, Heilongjiang 161006, People's Republic of China
| | - Shaobo Dong
- Colege of Materials Science and Engineering, Heilongjiang Province Key Laboratory of Polmeric Composition Material, Qiqihar University, Qiqihar, Heilongjiang 161006, People's Republic of China
| | - Zuoyuan Zhang
- Colege of Materials Science and Engineering, Heilongjiang Province Key Laboratory of Polmeric Composition Material, Qiqihar University, Qiqihar, Heilongjiang 161006, People's Republic of China
| | - Jiahang Xu
- Engineering Geological Technology Group, Underground Operation Branch, Daqing Oilfeld Company, Daqing, Heilongjiang 163318, People's Republic of China
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Wang Y, Wang Z, Chen Y, Lan T, Wang X, Liu G, Xin M, Hu Z, Yao Y, Ni Z, Sun Q, Guo W, Peng H. Genomic insights into the origin and evolution of spelt (Triticum spelta L.) as a valuable gene pool for modern wheat breeding. Plant Commun 2024; 5:100883. [PMID: 38491771 DOI: 10.1016/j.xplc.2024.100883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/22/2023] [Accepted: 03/13/2024] [Indexed: 03/18/2024]
Abstract
Spelt (Triticum aestivum ssp. spelta) is an important wheat subspecies mainly cultivated in Europe before the 20th century that has contributed to modern wheat breeding as a valuable genetic resource. However, relatively little is known about the origins and maintenance of spelt populations. Here, using resequencing data from 416 worldwide wheat accessions, including representative spelt wheat, we demonstrate that European spelt emerged when primitive hexaploid wheat spread to the west and hybridized with pre-settled domesticated emmer, the putative maternal donor. Genomic introgression regions from domesticated emmer confer spelt's primitive morphological characters used for species taxonomy, such as tenacious glumes and later flowering. We propose a haplotype-based "spelt index" to identify spelt-type wheat varieties and to quantify utilization of the spelt gene pool in modern wheat cultivars. This study reveals the genetic basis for the establishment of the spelt wheat subspecies in a specific ecological niche and the vital role of the spelt gene pool as a unique germplasm resource in modern wheat breeding.
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Affiliation(s)
- Yongfa Wang
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China
| | - Zihao Wang
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China; Sanya Institute of China Agricultural University, Sanya 572025, China
| | - Yongming Chen
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China
| | - Tianyu Lan
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China; Institute for Plant Genetics, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Xiaobo Wang
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China
| | - Gang Liu
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China
| | - Mingming Xin
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China
| | - Zhaorong Hu
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China
| | - Yingyin Yao
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China
| | - Zhongfu Ni
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China
| | - Qixin Sun
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China
| | - Weilong Guo
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China.
| | - Huiru Peng
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China.
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Cao J, Sun Y, Ding X, Li S, Chen B, Lan T. [Arbutin ameliorates liver fibrosis in mice by inhibiting macrophage recruitment and regulating the Akt/NF-κB and Smad signaling pathways]. Nan Fang Yi Ke Da Xue Xue Bao 2024; 44:652-659. [PMID: 38708497 DOI: 10.12122/j.issn.1673-4254.2024.04.05] [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] [Subscribe] [Scholar Register] [Indexed: 05/07/2024]
Abstract
OBJECTIVE To investigate the protective effect of arbutin against CCl4-induced hepatic fibrosis in mice and explore the underlying mechanisms. METHODS Twenty-four C57BL/6 mice were randomly divided into control group, model group, and low- and high-dose arbutin treatment (25 and 50 mg/kg, respectively) groups. Mouse models of liver fibrosis were established by intraperitoneal injection of CCl4, and arbutin was administered daily via gavage for 6 weeks. After the treatments, serum biochemical parameters of the mice were tested, and liver tissues were taken for HE staining, Sirius Red staining and immunohistochemical staining. RT-qPCR was used to detect the mRNA levels of α-SMA, Pdgfb, Col1α1, Timp-1, Ccl2 and Tnf-a, and Western blotting was performed to detect α-SMA protein expression in the liver tissues. In the cell experiment, the effect of arbutin treatment for 24 h on THP-1 and RAW264.7 cell migration and recruitment was examined using Transwell migration assay and DAPI staining; The changes in protein levels of Akt, p65, Smad3, p-Akt, p-p65, p-Smad3 and α-SMA in arbutintreated LX-2 cells were detected with Western blotting. RESULTS Arbutin treatment significantly lowered serum alanine aminotransferase and aspartate aminotransferase levels, alleviated liver tissue damage and collagen deposition, and reduced macrophage infiltration and α-SMA protein expression in the liver of the mouse models (P < 0.05 or 0.001). Arbutin treatment also significantly reduced CCl4-induced elevation of a-SMA, Pdgfb, Col1α1, Timp-1, Ccl2 and Tnf-a mRNA levels in mice (P < 0.05). In the cell experiment, arbutin treatment obviously inhibited migration and recruitment of THP-1 and RAW264.7 cells and lowered the phosphorylation levels of Akt, p65 and Smad3 and the protein expression level of α-SMA in LX-2 cells. CONCLUSION Arbutin ameliorates liver inflammation and fibrosis in mice by inhibiting hepatic stellate cell activation via reducing macrophage recruitment and infiltration and suppressing activation of the Akt/NF-κB and Smad signaling pathways.
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Affiliation(s)
- J Cao
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Y Sun
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
- Institute of Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
- Key Laboratory of Glucolipid Metabolic Disorder of the Ministry of Education, Guangdong Pharmaceutical University, Guangzhou 510006, China
- Guangdong Metabolic Diseases Research Center of Integrated Chinese and Western Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - X Ding
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
- Institute of Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
- Key Laboratory of Glucolipid Metabolic Disorder of the Ministry of Education, Guangdong Pharmaceutical University, Guangzhou 510006, China
- Guangdong Metabolic Diseases Research Center of Integrated Chinese and Western Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - S Li
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
- Institute of Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
- Key Laboratory of Glucolipid Metabolic Disorder of the Ministry of Education, Guangdong Pharmaceutical University, Guangzhou 510006, China
- Guangdong Metabolic Diseases Research Center of Integrated Chinese and Western Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - B Chen
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
- Institute of Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
- Key Laboratory of Glucolipid Metabolic Disorder of the Ministry of Education, Guangdong Pharmaceutical University, Guangzhou 510006, China
- Guangdong Metabolic Diseases Research Center of Integrated Chinese and Western Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - T Lan
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
- Institute of Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
- Key Laboratory of Glucolipid Metabolic Disorder of the Ministry of Education, Guangdong Pharmaceutical University, Guangzhou 510006, China
- Guangdong Metabolic Diseases Research Center of Integrated Chinese and Western Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
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5
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Guo H, Lan T, Lu X, Geng K, Shen X, Mao H, Guo Q. ROS-responsive curcumin-encapsulated nanoparticles for AKI therapy via promoting lipid degradation in renal tubules. J Mater Chem B 2024; 12:3063-3078. [PMID: 38441636 DOI: 10.1039/d3tb02318d] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
Lipid accumulation is a factor contributing to the pathogenesis of acute kidney injury (AKI), yet there are currently no approved pharmacotherapies aside from adjuvant therapy. A developed reactive oxygen species (ROS)-responsive drug delivery system (NPSBG@Cur) was developed to deliver the autophagy activator curcumin (Cur) in order to alleviate AKI by activating autophagy and promoting lipid droplet degradation. The nanoparticles were shown to be ROS-responsive in the H2O2 medium and demonstrate ROS-responsive uptake in palmitate (PA)-induced oxidative stress-damaged cells. NPSBG@Cur was found to effectively inhibit lipid accumulation by autophagosome transport in kidney tubular cells. Additionally, in a mouse AKI model, NPSBG@Cur was observed to significantly ameliorate renal damage by activating autophagy flux and improving lipid transport. These results suggest that the ROS-responsive drug delivery system augmented the therapeutic effect of Cur on AKI by improving lipid metabolism through autophagy activation. Therefore, targeting lipid metabolism with NPSBG@Cur may be a promising AKI treatment strategy.
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Affiliation(s)
- Honglei Guo
- Department of Nephrology, the First Affiliated Hospital of Nanjing Medical University (Jiangsu Province Hospital), Nanjing 210029, China.
| | - Tianyu Lan
- College of Ethnic Medicine, Guizhou Minzu University, Guiyang 550025, Guizhou Province, China.
| | - Xin Lu
- The State Key Laboratory of Functions and Applications of MediEucal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, Guizhou 550025, China.
| | - Kedui Geng
- The State Key Laboratory of Functions and Applications of MediEucal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, Guizhou 550025, China.
| | - Xiangchun Shen
- The State Key Laboratory of Functions and Applications of MediEucal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, Guizhou 550025, China.
| | - Huijuan Mao
- Department of Nephrology, the First Affiliated Hospital of Nanjing Medical University (Jiangsu Province Hospital), Nanjing 210029, China.
| | - Qianqian Guo
- The State Key Laboratory of Functions and Applications of MediEucal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, Guizhou 550025, China.
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Cong S, Lan T, Wang Y, Zu L, Dong S, Zhang Z. Preparation of high-performance anti-aging polypropylene by modified nano-TiO 2 and calcium sulfate whisker grafted acrylonitrile composite PP. RSC Adv 2024; 14:6041-6047. [PMID: 38362080 PMCID: PMC10868636 DOI: 10.1039/d3ra08266k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 02/01/2024] [Indexed: 02/17/2024] Open
Abstract
By employing the radical polymerization method, acrylonitrile (AN) was grafted on the surface of nano titanium dioxide (TiO2), and the calcium sulfate whisker (CSW) was modified using the coupling agent KH570 to provide ultraviolet (UV)-absorption capacity. The prepared TiO2-PAN and CSW-PAN materials can improve the anti-aging performance and mechanical properties of polypropylene (PP) and meet the application requirements of high-performance polypropylene. Further, the obtained PP composites show prolonged service life and application scope, which can effectively reduce white waste and avoid both resource waste and environmental pollution.
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Affiliation(s)
- Shanshan Cong
- School of Chemistry and Chemical Engineering, Qiaihar University Qiaihar China
- College of Materials Science and Engineering, Qiaihar University Qiaihar China
| | - Tianyu Lan
- College of Materials Science and Engineering, Qiaihar University Qiaihar China
- Northeast Petroleum University Applied Technology Research Institute, Northeast Petroleum University Daqing China
- College of Materials Science and Engineering, Heilongjiang Province Key Laboratory of Polymeric Composition Material, Qiaihar University Qiaihar 161006 China
| | - Yazhen Wang
- College of Materials Science and Engineering, Heilongjiang Province Key Laboratory of Polymeric Composition Material, Qiaihar University Qiaihar 161006 China
| | - Liwu Zu
- College of Materials Science and Engineering, Heilongjiang Province Key Laboratory of Polymeric Composition Material, Qiaihar University Qiaihar 161006 China
| | - Shaobo Dong
- College of Materials Science and Engineering, Heilongjiang Province Key Laboratory of Polymeric Composition Material, Qiaihar University Qiaihar 161006 China
| | - Zuoyuan Zhang
- School of Chemistry and Chemical Engineering, Qiaihar University Qiaihar China
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7
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Dong S, Wang Y, Liu L, Jia H, Zang Y, Zu L, Lan T, Wang J. Synthesis and Characterization of a Novel DOPO-Based Flame Retardant Intermediate and Its Flame Retardancy as a Polystyrene Intrinsic Flame Retardant. ACS Omega 2023; 8:48825-48842. [PMID: 38162735 PMCID: PMC10753556 DOI: 10.1021/acsomega.3c06235] [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: 08/22/2023] [Revised: 11/22/2023] [Accepted: 11/24/2023] [Indexed: 01/03/2024]
Abstract
The research on intrinsic flame retardant has become a hot topic in the field of flame retardant. The synthesis of reactive flame-retardant monomer is one of the effective methods to obtain an intrinsic flame retardant. In addition, in view of the small molecular flame retardant easily migrates from the polymer during the use process, which leads to the gradual reduction of the flame retardant effect and even the gradual loss of flame retardant performance, and the advantages of atom transfer radical polymerization (ATRP) technology in polymer structure design and function customization, we first synthesized reactive flame retardant monomer 6-(hydroxymethyl)dibenzo[c,e][1,2]oxaphosphinine 6-oxide (FAA-DOPO), then synthesized polystyrene bromine (PS148-Br) macromolecular initiator by ATRP technology, and finally obtained block copolymer polystyrene-b-poly{6-(hydroxymethyl)dibenzo[c,e][1,2]oxaphosphinine 6-oxide} (PS-b-PFAA-DOPO) by the polymerization of FAA-DOPO initiated by macromolecular initiator PS148-Br by ATRP technology. The chemical structure of FAA-DOPO was characterized by 1D and 2D NMR (1H, 13C, DEPT 135, HSQC, COSY, NOE, and HMBC) spectra, Fourier transform infrared spectroscopy (FTIR), liquid chromatography-tandem mass spectrometry (LC-MS) and X-ray photoelectron spectroscopy (XPS). The chemical structure and molecular weight of PS-b-PFAA-DOPO were characterized by FTIR and gel permeation chromatography (GPC). The thermal and flame-retardant properties of PS-b-PFAA-DOPO were characterized by thermogravimetry analysis (TG), UL-94, limiting oxygen index (LOI), and microscale combustion calorimetry (MCC). It was found that FAA-DOPO could be used as a monomer for polymerization, although FAA-DOPO had a large steric hindrance from the chemical structure of FAA-DOPO, the UL-94 grade of PS-b-PFAA-DOPO reached the V-0 grade, and the LOI increased by 59.12% compared with PS148-Br.
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Affiliation(s)
- Shaobo Dong
- College
of Chemistry and Chemical Engineering, Northeast
Petroleum University, Daqing 163318, People’s
Republic of China
- Heilongjiang
Province Key Laboratory of Polymeric Composition Material, College
of Materials Science and Engineering, Qiqihar
University, Qiqihar 161006, People’s
Republic of China
| | - Yazhen Wang
- College
of Chemistry and Chemical Engineering, Northeast
Petroleum University, Daqing 163318, People’s
Republic of China
- Heilongjiang
Province Key Laboratory of Polymeric Composition Material, College
of Materials Science and Engineering, Qiqihar
University, Qiqihar 161006, People’s
Republic of China
- College
of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, People’s Republic of China
| | - Li Liu
- College
of Chemistry and Chemical Engineering, Qiqihar
University, Qiqihar 161006, People’s
Republic of China
| | - Hongge Jia
- Heilongjiang
Province Key Laboratory of Polymeric Composition Material, College
of Materials Science and Engineering, Qiqihar
University, Qiqihar 161006, People’s
Republic of China
| | - Yu Zang
- Heilongjiang
Province Key Laboratory of Polymeric Composition Material, College
of Materials Science and Engineering, Qiqihar
University, Qiqihar 161006, People’s
Republic of China
| | - Liwu Zu
- Heilongjiang
Province Key Laboratory of Polymeric Composition Material, College
of Materials Science and Engineering, Qiqihar
University, Qiqihar 161006, People’s
Republic of China
| | - Tianyu Lan
- College
of Chemistry and Chemical Engineering, Northeast
Petroleum University, Daqing 163318, People’s
Republic of China
- Heilongjiang
Province Key Laboratory of Polymeric Composition Material, College
of Materials Science and Engineering, Qiqihar
University, Qiqihar 161006, People’s
Republic of China
| | - Jun Wang
- College
of Chemistry and Chemical Engineering, Northeast
Petroleum University, Daqing 163318, People’s
Republic of China
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8
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Zhao G, Liu P, Sun K, Yang Y, Lan T, Yang H. Research on data imbalance in intrusion detection using CGAN. PLoS One 2023; 18:e0291750. [PMID: 37815992 PMCID: PMC10564237 DOI: 10.1371/journal.pone.0291750] [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: 04/28/2023] [Accepted: 09/05/2023] [Indexed: 10/12/2023] Open
Abstract
To address the problems of attack category omission and poor generalization ability of traditional Intrusion Detection System (IDS) when processing unbalanced input data, an intrusion detection strategy based on conditional Generative Adversarial Networks (cGAN) is proposed. The cGAN generates attack samples that approximately obey the distribution pattern of input data and are randomly distributed within a certain bounded interval, which can avoid the redundancy caused by mechanical data widening. The experimental results show that the strategy has better performance indexes and stronger generalization ability in overall performance, which can solve insufficient classification performance and detection omission caused by unbalanced distribution of data categories and quantities.
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Affiliation(s)
- Guangyu Zhao
- School of Electronic Information Engineering, Changchun University of Science and Technology, Changchun, China
| | - Peng Liu
- School of Electronic Information Engineering, Changchun University of Science and Technology, Changchun, China
| | - Ke Sun
- North Navigation Control Technology CO., LTD, Beijing, China
| | - Yang Yang
- School of Electronic Information Engineering, Changchun University of Science and Technology, Changchun, China
| | - Tianyu Lan
- School of Electronic Information Engineering, Changchun University of Science and Technology, Changchun, China
| | - Han Yang
- Beijing Engineering Research Center of Emergency Survival Security, Beijing, China
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Lan T, Gao ZW, Yin H, Liu Y. A Sensor-Fault-Estimation Method for Lithium-Ion Batteries in Electric Vehicles. Sensors (Basel) 2023; 23:7737. [PMID: 37765794 PMCID: PMC10537895 DOI: 10.3390/s23187737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 08/29/2023] [Accepted: 09/04/2023] [Indexed: 09/29/2023]
Abstract
In recent years, electric vehicles powered by lithium-ion batteries have developed rapidly, and the safety and reliability of lithium-ion batteries have been a paramount issue. Battery management systems are highly dependent on sensor measurements to ensure the proper functioning of lithium-ion batteries. Therefore, it is imperative to develop a suitable fault diagnosis scheme for battery sensors, to realize a diagnosis at an early stage. The main objective of this paper is to establish validated electrical and thermal models for batteries, and address a model-based fault diagnosis scheme for battery sensors. Descriptor proportional and derivate observer systems are applied for sensor diagnosis, based on electrical and thermal models of lithium-ion batteries, which can realize the real-time estimation of voltage sensor fault, current sensor fault, and temperature sensor fault. To verify the estimation effect of the proposed scheme, various types of faults are utilized for simulation experiments. Battery experimental data are used for battery modeling and observer-based fault diagnosis in battery sensors.
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Affiliation(s)
- Tianyu Lan
- Research Centre for Digitalization and Intelligent Diagnosis to New Energies, College of Electrical and Information Engineering, Northeast Petroleum University, Daqing 163000, China
| | - Zhi-Wei Gao
- Research Centre for Digitalization and Intelligent Diagnosis to New Energies, College of Electrical and Information Engineering, Northeast Petroleum University, Daqing 163000, China
| | - Haishuang Yin
- Research Centre for Digitalization and Intelligent Diagnosis to New Energies, College of Electrical and Information Engineering, Northeast Petroleum University, Daqing 163000, China
| | - Yuanhong Liu
- Research Centre for Digitalization and Intelligent Diagnosis to New Energies, College of Electrical and Information Engineering, Northeast Petroleum University, Daqing 163000, China
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10
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Liu F, Liu XJ, He YP, Liu GB, Lan T, Ye JS. Clinical value of GRACE score combined with DFR in predicting short-term prognosis of patients undergoing early PCI after thrombolysis for acute myocardial infarction. Eur Rev Med Pharmacol Sci 2023; 27:4038-4045. [PMID: 37203827 DOI: 10.26355/eurrev_202305_32309] [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] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
OBJECTIVE The aim of the study was to investigate the clinical value of the Global Registry of Arterial Events in Acute Coronary Syndromes (GRACE) score combined with the D-dimer/fibrinogen ratio (DFR) in predicting the short-term prognosis of patients undergoing percutaneous coronary intervention (PCI) early after thrombolysis for acute myocardial infarction (AMI). PATIENTS AND METHODS A total of 102 patients who underwent PCI early after thrombolysis for AMI during April 2020 to January 2022 in our hospital were picked as study subjects. These subjects were assigned as the good prognosis group (without adverse cardiovascular events) and poor prognosis group (with adverse cardiovascular events) according to whether adverse cardiovascular events occurred during hospitalization and follow-up. Changes in GRACE scores and DFR levels in patients with different prognoses were analyzed. The GRACE score and DFR level of patients with different prognosis were analyzed. The clinic pathological characteristics were collected, and the risk factors for poor prognosis of AMI patients were analyzed by logistic risk regression; ROC curve was used to analyze the prognostic value of GRACE score combined with DFR in early PCI patients after AMI thrombolysis. RESULTS Compared with the good prognosis group, the GRACE score and DFR level in the poor prognosis group were much higher (p<0.001). Significant differences existed in blood pressure, ejection fraction, number of diseased branches, and Killip grading between the patients with good prognosis and those with poor prognosis (p<0.05). There existed no significant difference in clinical medication between the patients with good prognosis and those with poor prognosis (p>0.05). Logistic multivariate analysis indicated that GRACE score, DFR, ejection fraction, number of lesion branches, and Killip grade were all risk factors influencing the prognosis of patients undergoing early PCI after thrombolysis in AMI (p<0.05). The ROC curve was established and the area under the curve (AUC) of GRACE score, DFR, and combined detection were 0.815, 0.783, and 0.894, respectively, and the sensitivity and specificity were 80.24%, 60.42%, 83.71%, 66.78%, 91.42% and 77.83%, respectively. The AUC, sensitivity, and specificity of combined detection were higher than those of the two alone and had a higher predictive value for the short-term prognosis of patients. CONCLUSIONS The GRACE score combined with DFR was of great value in diagnosing the short-term prognosis of patients undergoing PCI early after thrombolysis for AMI. Furthermore, the GRACE score, DFR, ejection fraction, number of lesion branches, and Killip classification were all important factors influencing the short-term prognosis of patients, which were of great significance in determining the prognosis of patients.
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Affiliation(s)
- F Liu
- Department of Cardiology, Jintang County First People's Hospital, Chengdu, China.
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11
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Liu Y, Qian J, Zhao X, Lan T, Luo Y, Guo Q, Shen X. Dual-responsive antibiotic and baicalein co-delivery nanoparticles with enhanced synergistic antibacterial activity. J Biomater Sci Polym Ed 2023:1-17. [PMID: 36799915 DOI: 10.1080/09205063.2023.2182575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Globally, due to the rapid development of bacterial resistance, bacterial infections lead to significant mortality and morbidity which require efficient strategies to eradicate these infections. Herein, we prepared a dual-responsive synergistic drug delivery nanoparticle carrier (NPS@Bai/Cip), which responds to sub-acid bacterial microenvironments and targets phosphatase or phospholipase at infection sites. Nanoparticles surfaces were positively (10.0 mV) charged under acidic conditions, leading to good bacterial adhesion and enhanced drug accumulation. NPS@Bai/Cip showed good antibacterial and anti-biofilm activity against drug-resistant Pseudomonas aeruginosa. NPS@Bai/Cip could inhibit the biofilm formation via affecting the swimming, swarming, and twitching motilities of P. aeruginosa. NPS@Bai/Cip was used to treat drug-resistance P. aeruginosa-induced infection in rats by improving wound healing and reducing inflammatory responses. Thus, NPS@Bai/Cip functioned as an antibacterial and antibiofilm agent with good potential for treating bacteria-induced infections.
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Affiliation(s)
- Yujia Liu
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, Guizhou, China
| | - Jun Qian
- Department of Nephrology, the First Affiliated Hospital of Nanjing Medical University (Jiangsu Province Hospital), Nanjing, China
| | - Xiufen Zhao
- Department of Nephrology, the First Affiliated Hospital of Nanjing Medical University (Jiangsu Province Hospital), Nanjing, China
| | - Tianyu Lan
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, Guizhou, China
| | - Yongjun Luo
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, Guizhou, China
| | - Qianqian Guo
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, Guizhou, China
| | - Xiangchun Shen
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, Guizhou, China
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12
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Zhou X, Wang Y, Chen S, Wang C, Dong S, Lan T, Zu L, Song X, Kong Y. Research on Microstructure and Mechanical Properties of Nylon6/Basalt Fiber/High-Density Polyethylene Composites. ACS Omega 2022; 7:44972-44983. [PMID: 36530333 PMCID: PMC9753198 DOI: 10.1021/acsomega.2c05280] [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: 08/17/2022] [Accepted: 11/15/2022] [Indexed: 06/17/2023]
Abstract
As a representative polyolefin, high-density polyethylene (HDPE) has become one of the most commonly used commercial plastics with a wide range of applications in the world. However, its applications are limited due to poor mechanical properties. Hence, it is indispensable to develop composites with improved mechanical properties to overcome this disadvantage. In our work, basalt fiber (BF) and polyamide 6 (PA6)-reinforced HDPE composites were prepared. The effects of adding fiber, organic filler, and polar component maleic anhydride (MAH) on the microstructural characteristics of composites were investigated. Microstructural characterization evidenced that the binary-dispersed phase (PA6/BF) possesses a core-shell structure in which the component PA6 encapsulates the component BF, and the extent of encapsulation declines with the increase of MAH addition. It has been confirmed by scanning electron microscopy (SEM) observation that the microstructure is related to the interfacial tension of components. The effects of multicomponents on the crystallization behavior of composites were studied. The differential scanning calorimeter (DSC) analysis exhibited a significant change in the HDPE microstructure. Results showed that, as nucleating agents, PA6 and BF improve the crystallization rate in the cooling process. Furthermore, the rheological behavior of multicomponent composites was studied. With the increase of MAH, a clear improvement of complex viscosity and storage modulus was observed, of which the mechanism has been discussed in detail. The relationship between microstructure and heat resistance of composites was studied by a thermal deformation test under static fore. It is confirmed that the thermally conductive fiber BF and other components can form a thermally conductive network and channels, thus improving the heat resistance. It can become a composite material, which is suitable for special environments.
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Affiliation(s)
- Xilai Zhou
- School
of Automotive and Transportation Engineering, Heilongjiang Institute of Technology, Harbin150050, Heilongjiang, China
- College
of Material Science and Engineering, Qiqihar
University, Qiqihar161006, Heilongjiang, China
- Heilongjiang
Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar161006, China
| | - Yazhen Wang
- College
of Material Science and Engineering, Qiqihar
University, Qiqihar161006, Heilongjiang, China
- Heilongjiang
Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar161006, China
- College
of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin150040, Heilongjiang, China
| | - Sijia Chen
- PetroChina
Petrochemical Research Institute, Daqing
Chemical Engineering Research Center, Daqing163714, China
| | - Chenglong Wang
- PetroChina
Petrochemical Research Institute, Daqing
Chemical Engineering Research Center, Daqing163714, China
| | - Shaobo Dong
- College
of Material Science and Engineering, Qiqihar
University, Qiqihar161006, Heilongjiang, China
| | - Tianyu Lan
- College
of Material Science and Engineering, Qiqihar
University, Qiqihar161006, Heilongjiang, China
| | - Liwu Zu
- College
of Material Science and Engineering, Qiqihar
University, Qiqihar161006, Heilongjiang, China
| | - Xinyi Song
- Department
of Biomedical Laboratory Science, Dankook
University, Cheonan31116, Korea
| | - Yue Kong
- Liaoning
Key Laboratory of Lignocellulose Chemistry and BioMaterials, Liaoning
Collaborative Innovation Center for Lignocellulosic Biorefinery, College
of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian116034, China
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13
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Lan T, Guo H, Lu X, Geng K, Wu L, Luo Y, Zhu J, Shen X, Guo Q, Wu S. Dual-Responsive Curcumin-Loaded Nanoparticles for the Treatment of Cisplatin-Induced Acute Kidney Injury. Biomacromolecules 2022; 23:5253-5266. [PMID: 36382792 DOI: 10.1021/acs.biomac.2c01083] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Acute kidney injury (AKI) has been a global public health concern leading to high patient morbidity and mortality in the world. Nanotechnology-mediated antioxidative therapy has facilitated the treatment of AKI. Herein, a hierarchical curcumin-loaded nanodrug delivery system (NPS@Cur) was fabricated for antioxidant therapy to ameliorate AKI. The nanoplatform could respond to subacidic and reactive oxygen species (ROS) microenvironments. The subacidic microenvironment led to a smaller size (from 140.9 to 99.36 nm) and positive charge (from -4.9 to 12.6 mV), contributing to the high accumulation of nanoparticles. An excessive ROS microenvironment led to nanoparticle degradation and drug release. In vitro assays showed that NPS@Cur could scavenge excessive ROS and relieve oxidative stress in H2O2-induced HK-2 cells through reduced apoptosis, activated autophagy, and decreased endoplasmic reticulum stress. Results from cisplatin-induced AKI models revealed that NPS@Cur could effectively alleviate mitochondria injury and protect kidneys via antioxidative protection, activated autophagy, decreased endoplasmic reticulum stress, and reduced apoptosis. NPS@Cur showed excellent biocompatibility and low toxicity to primary tissues in mice. These results revealed that NPS@Cur may be a potential therapeutic strategy for efficiently treating cisplatin or other cause-induced AKI.
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Affiliation(s)
- Tianyu Lan
- Biomedical Division, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, College of Materials Science and Engineering, South China University of Technology, Guangzhou510640, China.,The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou550025, China
| | - Honglei Guo
- Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University (Jiangsu Province Hospital), Nanjing210029, China
| | - Xin Lu
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou550025, China
| | - Kedui Geng
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou550025, China
| | - Lin Wu
- Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University (Jiangsu Province Hospital), Nanjing210029, China
| | - Yongjun Luo
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou550025, China
| | - Jingfeng Zhu
- Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University (Jiangsu Province Hospital), Nanjing210029, China
| | - Xiangchun Shen
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou550025, China
| | - Qianqian Guo
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou550025, China
| | - Shuizhu Wu
- Biomedical Division, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, College of Materials Science and Engineering, South China University of Technology, Guangzhou510640, China
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14
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Dong S, Wang Y, Lan T, Wang J, Zu L, Xiao T, Yang Y, Wang J. Synthesis of High-Molecular-Weight Bifunctional Additives with both Flame Retardant Properties and Antistatic Properties via ATRP. ACS Omega 2022; 7:44287-44297. [PMID: 36506206 PMCID: PMC9730767 DOI: 10.1021/acsomega.2c05809] [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: 09/07/2022] [Accepted: 11/03/2022] [Indexed: 06/17/2023]
Abstract
Polystyrene (PS) is widely used in our daily life, but it is flammable and produces a large number of toxic gases and high-temperature flue gases in the combustion process, which limit its application. Improving the flame retardancy of PS has become an urgent problem to be solved. In addition, in view of the disadvantage that small-molecule flame retardants can easily migrate from polymers during use, which leads to the gradual reduction of the flame retardant effect or even loss of flame retardant performance, and the outstanding advantages of ATRP technology in polymer structure design and function customization, we used ATRP technology to synthesize the high-molecular-weight bifunctional additive PFAA-DOPO-b-PDEAEMA, which has flame retardant properties and antistatic properties. The chemical structure and molecular weight of PFAA-DOPO-b-PDEAEMA were characterized by FTIR, 1H NMR, GPC, and XPS. When the addition of PFAA-DOPO-b-PDEAEMA was 15 wt %, the limiting oxygen index (LOI) of polystyrene composites was 28.4%, which was 53.51% higher than that of pure polystyrene, the peak of the heat release rate (pHRR) was 37.61% lower than that of pure polystyrene, UL-94 reached V-0 grade, and the flame retardant index (FRI) was 2.98. In addition, when the PFAA-DOPO-b-PDEEMA content is 15 wt %, the surface resistivity and volume resistivity of polystyrene composites are 2 orders of magnitude lower than those of polystyrene. This research work provides a reference for the design of bifunctional and even multifunctional polymers.
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Affiliation(s)
- Shaobo Dong
- College
of Chemistry and Chemical Engineering, Northeast
Petroleum University, Daqing163318, People’s Republic
of China
- Heilongjiang
Province Key Laboratory of Polymeric Composition Material, College
of Materials Science and Engineering, Qiqihar
University, Qiqihar161006, People’s Republic
of China
| | - Yazhen Wang
- College
of Chemistry and Chemical Engineering, Northeast
Petroleum University, Daqing163318, People’s Republic
of China
- Heilongjiang
Province Key Laboratory of Polymeric Composition Material, College
of Materials Science and Engineering, Qiqihar
University, Qiqihar161006, People’s Republic
of China
- College
of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin150040, People’s Republic of China
| | - Tianyu Lan
- College
of Chemistry and Chemical Engineering, Northeast
Petroleum University, Daqing163318, People’s Republic
of China
- Heilongjiang
Province Key Laboratory of Polymeric Composition Material, College
of Materials Science and Engineering, Qiqihar
University, Qiqihar161006, People’s Republic
of China
| | - Jianxin Wang
- Heilongjiang
Province Key Laboratory of Polymeric Composition Material, College
of Materials Science and Engineering, Qiqihar
University, Qiqihar161006, People’s Republic
of China
| | - Liwu Zu
- Heilongjiang
Province Key Laboratory of Polymeric Composition Material, College
of Materials Science and Engineering, Qiqihar
University, Qiqihar161006, People’s Republic
of China
| | - Tianyuan Xiao
- College
of Light Industry and Textile, Qiqihar University, Qiqihar161006, People’s Republic of China
| | - Yonghui Yang
- Heilongjiang
Province Key Laboratory of Polymeric Composition Material, College
of Materials Science and Engineering, Qiqihar
University, Qiqihar161006, People’s Republic
of China
| | - Jun Wang
- College
of Chemistry and Chemical Engineering, Northeast
Petroleum University, Daqing163318, People’s Republic
of China
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15
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Wang Y, Yang Q, Zu L, Dong S, Lan T. Preparation and Characterization of PAM‐b‐DOPOAA by ATRP. ChemistrySelect 2022. [DOI: 10.1002/slct.202202905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Yazhen Wang
- College of Materials Science and Engineering Qiaihar University Qiaihar 161006 China
- College of Chemistry Chemical Engineering and Resource Utilization Northeast Forestry University Harbin 150040 China
| | - Qing Yang
- College of Materials Science and Engineering Qiaihar University Qiaihar 161006 China
| | - Liwu Zu
- College of Materials Science and Engineering Heilongjiang Province Key Laboratory of Polymeric Composition Material Qiaihar University Qiaihar 161006 China
| | - Shaobo Dong
- College of Materials Science and Engineering Heilongjiang Province Key Laboratory of Polymeric Composition Material Qiaihar University Qiaihar 161006 China
| | - Tianyu Lan
- College of Materials Science and Engineering Heilongjiang Province Key Laboratory of Polymeric Composition Material Qiaihar University Qiaihar 161006 China
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16
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Affiliation(s)
- Y H Zhou
- Department of Pathology, Sichuan Cancer Hospital and Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610042, China
| | - S Qin
- Department of Pathology, Sichuan Cancer Hospital and Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610042, China
| | - J X Yan
- Department of Pathology, Sichuan Cancer Hospital and Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610042, China
| | - J Ji
- Department of Pathology, Sichuan Cancer Hospital and Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610042, China
| | - T Lan
- Department of Pathology, Sichuan Cancer Hospital and Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610042, China
| | - Y Liu
- Department of Pathology, Sichuan Cancer Hospital and Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610042, China
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17
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Tian X, Qin Z, Zhao Y, Wen J, Lan T, Zhang L, Wang F, Qin D, Yu K, Zhao A, Hu Z, Yao Y, Ni Z, Sun Q, De Smet I, Peng H, Xin M. Stress granule-associated TaMBF1c confers thermotolerance through regulating specific mRNA translation in wheat (Triticum aestivum). New Phytol 2022; 233:1719-1731. [PMID: 34787921 PMCID: PMC9300156 DOI: 10.1111/nph.17865] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [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: 07/27/2021] [Accepted: 11/07/2021] [Indexed: 05/19/2023]
Abstract
Heat stress is a major limiting factor for global wheat production and causes dramatic yield loss worldwide. The TaMBF1c gene is upregulated in response to heat stress in wheat. Understanding the molecular mechanisms associated with heat stress responses will pave the way to improve wheat thermotolerance. Through CRISPR/Cas9-based gene editing, polysome profiling coupled with RNA-sequencing analysis, and protein-protein interactions, we show that TaMBF1c conferred heat response via regulating a specific gene translation in wheat. The results showed that TaMBF1c is evolutionarily conserved in diploid, tetraploid and hexaploid wheat species, and its knockdown and knockout lines show increased heat sensitivity. TaMBF1c is colocalized with the stress granule complex and interacts with TaG3BP. TaMBF1c affects the translation efficiency of a subset of heat responsive genes, which are significantly enriched in the 'sequence-specific DNA binding' term. Moreover, gene expression network analysis demonstrated that TaMBF1c is closely associated with the translation of heat shock proteins. Our findings reveal a contribution of TaMBF1c in regulating the heat stress response via the translation process, and provide a new target for improving heat tolerance in wheat breeding programs.
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Affiliation(s)
- Xuejun Tian
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis Utilization (MOE)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing100193China
| | - Zhen Qin
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis Utilization (MOE)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing100193China
| | - Yue Zhao
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis Utilization (MOE)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing100193China
| | - Jingjing Wen
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis Utilization (MOE)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing100193China
| | - Tianyu Lan
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis Utilization (MOE)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing100193China
| | - Liyuan Zhang
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis Utilization (MOE)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing100193China
| | - Fei Wang
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis Utilization (MOE)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing100193China
| | - Dandan Qin
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis Utilization (MOE)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing100193China
| | - Kuohai Yu
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis Utilization (MOE)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing100193China
| | - Aiju Zhao
- Hebei Academy of Agriculture and Forest SciencesShijiazhuang050035China
| | - Zhaorong Hu
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis Utilization (MOE)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing100193China
| | - Yingyin Yao
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis Utilization (MOE)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing100193China
| | - Zhongfu Ni
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis Utilization (MOE)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing100193China
| | - Qixin Sun
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis Utilization (MOE)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing100193China
| | - Ive De Smet
- Department of Plant Biotechnology and BioinformaticsGhent UniversityGhentB‐9052Belgium
- VIB Center for Plant Systems BiologyGhentB‐9052Belgium
| | - Huiru Peng
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis Utilization (MOE)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing100193China
| | - Mingming Xin
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis Utilization (MOE)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing100193China
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18
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Kuzay S, Lin H, Li C, Chen S, Woods DP, Zhang J, Lan T, von Korff M, Dubcovsky J. WAPO-A1 is the causal gene of the 7AL QTL for spikelet number per spike in wheat. PLoS Genet 2022; 18:e1009747. [PMID: 35025863 PMCID: PMC8791482 DOI: 10.1371/journal.pgen.1009747] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [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: 07/26/2021] [Revised: 01/26/2022] [Accepted: 12/18/2021] [Indexed: 01/08/2023] Open
Abstract
Improving our understanding of the genes regulating grain yield can contribute to the development of more productive wheat varieties. Previously, a highly significant QTL affecting spikelet number per spike (SNS), grain number per spike (GNS) and grain yield was detected on chromosome arm 7AL in multiple genome-wide association studies. Using a high-resolution genetic map, we established that the A-genome homeolog of WHEAT ORTHOLOG OF APO1 (WAPO-A1) was a leading candidate gene for this QTL. Using mutants and transgenic plants, we demonstrate in this study that WAPO-A1 is the causal gene underpinning this QTL. Loss-of-function mutants wapo-A1 and wapo-B1 showed reduced SNS in tetraploid wheat, and the effect was exacerbated in wapo1 combining both mutations. By contrast, spikes of transgenic wheat plants carrying extra copies of WAPO-A1 driven by its native promoter had higher SNS, a more compact spike apical region and a smaller terminal spikelet than the wild type. Taken together, these results indicate that WAPO1 affects SNS by regulating the timing of terminal spikelet formation. Both transgenic and wapo1 mutant plants showed a wide range of floral abnormalities, indicating additional roles of WAPO1 on wheat floral development. Previously, we found three widespread haplotypes in the QTL region (H1, H2 and H3), each associated with particular WAPO-A1 alleles. Results from this and our previous study show that the WAPO-A1 allele in the H1 haplotype (115-bp deletion in the promoter) is expressed at significantly lower levels in the developing spikes than the alleles in the H2 and H3 haplotypes, resulting in reduced SNS. Field experiments also showed that the H2 haplotype is associated with the strongest effects in increasing SNS and GNS (H2>H3>H1). The H2 haplotype is already present in most modern common wheat varieties but is rare in durum wheat, where it might be particularly useful to improve grain yield.
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Affiliation(s)
- Saarah Kuzay
- Department of Plant Sciences, University of California, Davis, California, United States of America
| | - Huiqiong Lin
- Department of Plant Sciences, University of California, Davis, California, United States of America
- Howard Hughes Medical Institute, Chevy Chase, Maryland, United States of America
| | - Chengxia Li
- Department of Plant Sciences, University of California, Davis, California, United States of America
- Howard Hughes Medical Institute, Chevy Chase, Maryland, United States of America
| | - Shisheng Chen
- Department of Plant Sciences, University of California, Davis, California, United States of America
- Peking University Institute of Advanced Agricultural Sciences, Weifang, Shandong, China
| | - Daniel P. Woods
- Department of Plant Sciences, University of California, Davis, California, United States of America
- Howard Hughes Medical Institute, Chevy Chase, Maryland, United States of America
| | - Junli Zhang
- Department of Plant Sciences, University of California, Davis, California, United States of America
| | - Tianyu Lan
- Institute for Plant Genetics, Heinrich Heine University, Duesseldorf, Germany
| | - Maria von Korff
- Institute for Plant Genetics, Heinrich Heine University, Duesseldorf, Germany
- Cluster of Excellence on Plant Sciences “SMART Plants for Tomorrow’s Needs”, Heinrich Heine University, Duesseldorf, Germany
| | - Jorge Dubcovsky
- Department of Plant Sciences, University of California, Davis, California, United States of America
- Howard Hughes Medical Institute, Chevy Chase, Maryland, United States of America
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Wang Y, Liu X, Shi Z, Lin Y, Yang Y, Yang Q, Dong S, Lan T. Rheological Behavior of High Density Polyethylene (HDPE) Filled with Corn Stalk Biochar. ChemistrySelect 2021. [DOI: 10.1002/slct.202102663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yazhen Wang
- College of Materials Science and Engineering Qiqihar University Qiqihar 161006 China
- College of Chemistry Chemical Engineering and Resource Utilization Northeast Forestry University Harbin 150040 China
| | - Xinyu Liu
- College of Materials Science and Engineering Qiqihar University Qiqihar 161006 China
- College of Chemistry Chemical Engineering and Resource Utilization Northeast Forestry University Harbin 150040 China
| | - Zhen Shi
- College of Materials Science and Engineering Heilongjiang Key Laboratory of Polymer Matrix Composites Qiqihar University Qiqihar 161006 China
| | - Yuxin Lin
- College of Materials Science and Engineering Heilongjiang Key Laboratory of Polymer Matrix Composites Qiqihar University Qiqihar 161006 China
| | - Yonghui Yang
- College of Materials Science and Engineering Heilongjiang Key Laboratory of Polymer Matrix Composites Qiqihar University Qiqihar 161006 China
| | - Qing Yang
- College of Materials Science and Engineering Heilongjiang Key Laboratory of Polymer Matrix Composites Qiqihar University Qiqihar 161006 China
| | - Shaobo Dong
- College of Materials Science and Engineering Heilongjiang Key Laboratory of Polymer Matrix Composites Qiqihar University Qiqihar 161006 China
| | - Tianyu Lan
- College of Materials Science and Engineering Heilongjiang Key Laboratory of Polymer Matrix Composites Qiqihar University Qiqihar 161006 China
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Li Q, Cai T, Zhang L, Liu N, Chen R, Xie Z, Huang J, Zhang X, He T, Cao H, Li Y, Lan T, Xie S, Peng Y, Li B, Wu J, Li J, Liang F, Fan S. 892P The genomic features of Chinese oropharyngeal squamous cell carcinomas and the implications for therapy. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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21
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Xu R, Li Y, Sui Z, Lan T, Song W, Zhang M, Zhang Y, Xing J. A C-terminal encoded peptide, ZmCEP1, is essential for kernel development in maize. J Exp Bot 2021; 72:5390-5406. [PMID: 34104938 DOI: 10.1093/jxb/erab224] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 05/16/2021] [Indexed: 06/12/2023]
Abstract
C-terminal encoded peptides (CEPs) are peptide hormones which act as mobile signals coordinating important developmental programs. Previous studies have unraveled that CEPs are able to regulate plant growth and abiotic stress via cell-to-cell communication in Arabidopsis and rice; however, little is known about their roles in maize. Here, we examined the spatiotemporal expression pattern of ZmCEP1 and showed that ZmCEP1 is highly expressed in young ears and tassels of maize, particularly in the vascular bundles of ears. Heterologous expression of ZmCEP1 in Arabidopsis results in smaller plants and seed size. Similarly, overexpression of ZmCEP1 in maize decreased the plant and ear height, ear length, kernel size, and 100-kernel weight. Consistently, exogenous application of the synthesized ZmCEP1 peptide to the roots of Arabidopsis and maize inhibited root elongation. Knock-out of ZmCEP1 through CRISPR/Cas9 significantly increased plant and ear height, kernel size and 100-kernel weight. Transcriptome analysis revealed that knock-out of ZmCEP1 up-regulated a subset of genes involved in nitrogen metabolism, nitrate transport, sugar transport and auxin response. Thus, these results provide new insights into the genetic and molecular function of ZmCEP1 in regulating kernel development and plant growth, providing novel opportunities for maize breeding.
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Affiliation(s)
- Ruibin Xu
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization (MOE), Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Yufeng Li
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization (MOE), Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Zhipeng Sui
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization (MOE), Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Tianyu Lan
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization (MOE), Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Wanjun Song
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization (MOE), Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Ming Zhang
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization (MOE), Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Yirong Zhang
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization (MOE), Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
- National Maize Improvement Center of China, China Agricultural University, Beijing, 100193, China
| | - Jiewen Xing
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization (MOE), Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
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Guo H, Guo Q, Lan T, Luo Y, Pan X, Yao Y, Li Y, Feng Y, Liu Y, Tao L, Shen X. Amphiphilic block versus random copolymer nanoparticles with reactive oxygen species responsiveness as berberine vehicles. J Biomater Sci Polym Ed 2021; 32:1657-1677. [PMID: 34024257 DOI: 10.1080/09205063.2021.1932356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
A series of amphiphilic block and random copolymers based on phenylboronic acid pinacol ester were synthesized via reversible addition-fragmentation chain transfer polymerization. The obtained copolymers can self-assemble in aqueous solution into stable block copolymer nanoparticles and random nanoparticles with sizes of 116.1-158.6 and 126.3-187.0 nm, respectively. All nanoparticles showed hydrogen peroxide (H2O2) sensitivity, and the random copolymer nanoparticles presented faster responsiveness to H2O2 than did those derived from block copolymers. Berberine (BBR) can be effectively encapsulated into block and random copolymer nanoparticles with loading capacity of 7.6%-9.1% and 7.3%-8.9%, respectively. The BBR release can be controlled in an H2O2 medium. For the random copolymer nanoparticles, the release rate of BBR was faster and the cumulative release amounts in response to H2O2 were higher over 48 h. The BBR cumulative release amount in the H2O2 medium for the block and random copolymer nanoparticles was 62.2%-70.2% and 68.6%-80.4%, respectively. Moreover, good biocompatibility was observed for the BBR-loaded block and random copolymer nanoparticles. BBR and BBR-loaded nanoparticles can improve Glut4 translocation to the cell membrane and promote glucose transport into cells. BBR-loaded nanoparticles can decrease the blood glucose levels in diabetic rats over 15 days. These results imply that the different chain formulation of block and random copolymers affects the H2O2 responsiveness and that the two kinds of nanoparticles exhibit potential application as novel vehicles for BBR delivery to regulate blood glucose levels.
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Affiliation(s)
- Honglei Guo
- Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University (Jiangsu Province Hospital), Nanjing, Jiangsu, China
| | - Qianqian Guo
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou, China
| | - Tianyu Lan
- School of Chemical Engineering, Guizhou Minzu University, Guiyang, Guizhou, China
| | - Yongjun Luo
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou, China
| | - Xiuhao Pan
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou, China
| | - Yifang Yao
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou, China
| | - Yafei Li
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou, China
| | - Ya Feng
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou, China
| | - Yujia Liu
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou, China
| | - Ling Tao
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou, China
| | - Xiangchun Shen
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou, China
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Yu Y, Xu M, Duan XR, Nie L, Ke R, Yuan BD, Gong SB, Lan T, Wang ZH, Long T, Wu YF, Yuan JB, Wu T, Chen YH, Liu H, Zhou YX, Wang HJ, Zhong WL, Shi ZB, Li JQ, Liu Y, Hao GZ, Chen W, Chen Q, Sun AP, Ye MY. Recent Progress of Optical and Spectroscopic Diagnostics for Turbulence on the HL-2A tokamak. J Fusion Energ 2021. [DOI: 10.1007/s10894-021-00302-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Ji JX, Liu AD, Zhou C, Zhuang G, Zhang J, Feng X, Liu ZY, Zhong XM, Fan HR, Zhang SB, Liu Y, Hu LQ, Mao WZ, Lan T, Xie JL, Li H, Liu ZX, Liu WD. The cross-polarization scattering system for the magnetic fluctuation measurement in the Experimental Advanced Superconducting Tokamak. Rev Sci Instrum 2021; 92:043511. [PMID: 34243396 DOI: 10.1063/5.0012520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 03/16/2021] [Indexed: 06/13/2023]
Abstract
The cross-polarization scattering (CPS) system for magnetic fluctuation measurements in the Experimental Advanced Superconducting Tokamak (EAST) has been designed and installed. Different from the Doppler reflectometer (DR) system, the CPS system detects the perpendicular polarization of the electromagnetic wave induced by magnetic fluctuations B̃. The CPS system in the EAST has been developed from the existing Doppler reflectometer system, and they are integrated together for simultaneous measurement of magnetic and density fluctuations. Ray-tracing simulations are used to calculate the scattering locations and the wavenumber coverage of the magnetic fluctuation for CPS. In the experiments, the CPS and DR system data were different in Doppler shift, amplitude, and spectrum broadening. In this article, the hardware design, the ray tracing, and the preliminary results of the system in the EAST are presented.
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Affiliation(s)
- J X Ji
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - A D Liu
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - C Zhou
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - G Zhuang
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - J Zhang
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - X Feng
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Z Y Liu
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - X M Zhong
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - H R Fan
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - S B Zhang
- Institute of Plasma Physics, Chinese Academy of Sciences, Anhui, Hefei 230021, China
| | - Y Liu
- Institute of Plasma Physics, Chinese Academy of Sciences, Anhui, Hefei 230021, China
| | - L Q Hu
- Institute of Plasma Physics, Chinese Academy of Sciences, Anhui, Hefei 230021, China
| | - W Z Mao
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - T Lan
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - J L Xie
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - H Li
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Z X Liu
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - W D Liu
- School of Nuclear Sciences and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
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Guo Q, Guo H, Lan T, Chen Y, Chen X, Feng Y, Luo Y, Yao Y, Li Y, Pan X, Xu Y, Tao L, Liu Y, Shen X. Co-delivery of antibiotic and baicalein by using different polymeric nanoparticle cargos with enhanced synergistic antibacterial activity. Int J Pharm 2021; 599:120419. [PMID: 33647416 DOI: 10.1016/j.ijpharm.2021.120419] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 02/12/2021] [Accepted: 02/20/2021] [Indexed: 12/14/2022]
Abstract
To evaluate the effect of polymer structures on their unique characteristics and antibacterial activity, this study focused on developing amphiphilic copolymers by using three different molecules through RAFT polymerization. Three amphiphilic copolymers, namely, PBMA-b-(PDMAEMA-r-PPEGMA) (BbDrE), (PBMA-r-PDMAEMA)-b-PPEGMA (BrDbE), and PBMA-r-PDMAEMA-r-PPEGMA (BrDrE), are successfully self-assembled into spherical or oval shaped nanoparticles in aqueous solution and remain stable in PBS, LB, and 10% FBS solutions for at least 3 days. The critical micelle concentrations are 0.012, 0.025, and 0.041 mg/mL for BbDrE, BrDbE, and BrDrE, respectively. The zeta potential values under pH 5.5 and pH 7.4 conditions are 3.18/0.19, 8.57/0.046, and 2.54/-0.69 mV for BbDrE, BrDbE, and BrDrE nanoparticles, respectively. The three copolymers with similar monomer compositions show similar molecular weight and thermostability. Baicalein (BA) and ciprofloxacin (CPX) are encapsulated into the three nanoparticles to obtain BbDrE@BA/CPX, BrDbE@BA/CPX, and BrDrE@BA/CPX nanocomposites, with LC values of 63.9/78.3, 63.9/74.7, and 55.3/64.8, respectively. The two drugs are released from the three drug-loaded nanocomposites with 60%-95% release in pH 5.5 over 24 h and 15%-30% release in pH 7.4. The drug-loaded nanocomposites show synergistic antibacterial activity than the naked drug (2-8 fold reduction for CPX) or single drug-loaded nanocomposites (4-8 fold reduction for CPX) against Pseudomonas aeruginosa and Staphylococcus aureus. The drug-loaded nanocomposites inhibit the formation of bacterial biofilms above their MIC values and eliminate bacterial biofilms observed by fluorescent microscope. Finally, the nanocomposites improve the healing of infection induced by P. aeruginosa and S. aureus on rat dermal wounds. These results indicate that antimicrobial agents with different structures could be an alternative treatment strategy for bacteria-induced infection.
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Affiliation(s)
- Qianqian Guo
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China; Department of Nephrology, the First Affiliated Hospital of Nanjing Medical University (Jiangsu Province Hospital), Nanjing, China.
| | - Honglei Guo
- Department of Nephrology, the First Affiliated Hospital of Nanjing Medical University (Jiangsu Province Hospital), Nanjing, China
| | - Tianyu Lan
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550025, Guizhou, China
| | - Yi Chen
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China; The Department of Pharmacology of Materia Medica (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
| | - Xueyun Chen
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China; The Department of Pharmacology of Materia Medica (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
| | - Ya Feng
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China; The Department of Pharmacology of Materia Medica (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
| | - Yongjun Luo
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China; The Department of Pharmacology of Materia Medica (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
| | - Yifang Yao
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China; The Department of Pharmacology of Materia Medica (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
| | - Yafei Li
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China; The Department of Pharmacology of Materia Medica (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
| | - Xiuhao Pan
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China; The Department of Pharmacology of Materia Medica (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
| | - Yini Xu
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China; The Department of Pharmacology of Materia Medica (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
| | - Ling Tao
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China; The Department of Pharmacology of Materia Medica (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
| | - Yujia Liu
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China; The Department of Pharmacology of Materia Medica (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
| | - Xiangchun Shen
- The State Key Laboratory of Functions and Applications of Medicinal Plants, School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China; The Department of Pharmacology of Materia Medica (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China.
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Li Y, Wang ZC, Luo L, Mu CY, Xu J, Feng Q, Li SB, Gu B, Ma P, Lan T. The clinical value of the combined detection of sEGFR, CA125 and HE4 for epithelial ovarian cancer diagnosis. Eur Rev Med Pharmacol Sci 2021; 24:604-610. [PMID: 32016961 DOI: 10.26355/eurrev_202001_20036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE This study aims to investigate the clinical value of combined detection of serum soluble epidermal growth factor receptor (sEGFR), cancer antigen 125 (CA125), and human epididymis protein 4 (HE4) in the diagnosis of epithelial ovarian cancer (EOC). PATIENTS AND METHODS From December 2017 to October 2018, the serum samples were obtained from the Affiliated Hospital of Xuzhou Medical University, with 30 patients as EOC group, 30 patients with benign ovarian neoplasms as benign group, and 17 healthy subjects as healthy group. Besides, among 30 EOC patients, 9 serum samples were obtained from pre-operative and post-operative EOC patients. The levels of serum sEGFR were detected by enzyme-linked immunosorbent assay (ELISA), while CA125 and HE4 were detected by enhanced chemiluminescence immunoassay (ECLIA). The diagnostic value was evaluated by receiver operating characteristic (ROC) curve analysis. RESULTS The levels of serum sEGFR, CA125, and HE4 in EOC group were significantly higher than those in benign group (p<0.05) and healthy group (p<0.05). When using a single tumor marker, the CA125 shows the highest sensitivity (93.30%) and HE4 shows the highest specificity (97.87%). The specificity of combined detection of serum sEGFR, CA125, and HE4 was 100%, which was significantly higher than that using a single tumor marker. The area under the ROC curve (AUC) of combined detection of serum sEGFR, CA125, and HE4 (0.965) was much higher than that of the single detection and higher than that of combined detection of CA125 and HE4 (0.940). Moreover, the level of serum sEGFR in post-operative EOC group was significantly lower than that in the corresponding pre-operative EOC group (p<0.05). CONCLUSIONS Our study shows that combined detection of serum sEGFR, CA125, and HE4 increases the specificity and efficiency in EOC diagnosis, indicating that sEGFR could be a potential biomarker for the diagnosis and prognosis of EOC.
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Affiliation(s)
- Y Li
- School of Medical Technology, Xuzhou Medical University, Xuzhou City, Jiangsu Province,
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Shi Z, Wang Y, Sun Y, Wu X, Xiao T, Dong S, Lan T. Facile One‐Pot Synthesis of Magnetic Targeted Polymers for Drug Delivery and Study on Thermal Decomposition Kinetics. ChemistrySelect 2021. [DOI: 10.1002/slct.202004607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zhen Shi
- College of Materials Science and Engineering Qiqihar University Qiqihar 161006 China
| | - Yazhen Wang
- College of Materials Science and Engineering Qiqihar University Qiqihar 161006 China
- College of Chemistry, Chemical Engineering and Resource Utilization Northeast Forestry University Harbin 150040 China
| | - Yu Sun
- College of Materials Science and Engineering, Heilongjiang Province Key Laboratory of Polymeric Composition Material Qiqihar University Qiqihar 161006 China
| | - Xueying Wu
- College of Materials Science and Engineering, Heilongjiang Province Key Laboratory of Polymeric Composition Material Qiqihar University Qiqihar 161006 China
| | - Tianyuan Xiao
- College of Materials Science and Engineering, Heilongjiang Province Key Laboratory of Polymeric Composition Material Qiqihar University Qiqihar 161006 China
| | - Shaobo Dong
- College of Materials Science and Engineering, Heilongjiang Province Key Laboratory of Polymeric Composition Material Qiqihar University Qiqihar 161006 China
| | - Tianyu Lan
- College of Materials Science and Engineering, Heilongjiang Province Key Laboratory of Polymeric Composition Material Qiqihar University Qiqihar 161006 China
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28
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Lan T, Zhang N, Chen L, Li C, Wang J. Synthesis of New Dendritic Titanium Catalysts and Catalytic Ethylene Polymerization. ACS Omega 2021; 6:3354-3362. [PMID: 33553953 PMCID: PMC7860516 DOI: 10.1021/acsomega.0c05851] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 01/08/2021] [Indexed: 06/12/2023]
Abstract
The 1.0G dendrimer polyamidoamine (PAMAM), 3,5-dichlorosalicylaldehyde, and TiCl4·2THF were used as synthetic materials, and the dendritic salicylaldehyde imide ligand with substituent hindrance and its titanium catalyst were synthesized by the condensation reaction of Schiff base. The structure of the synthesized products was characterized by infrared spectroscopy, nuclear magnetic resonance hydrogen spectroscopy, ultraviolet spectroscopy, electrospray mass spectrometry, and inductively coupled plasma-mass spectrometry. Activated methylaluminoxane (MAO) was used as a catalyst precursor for ethylene polymerization in the process of ethylene catalytic. The effects of ethylene polymerization were studied in terms of the Al/Ti molar ratio, reaction time, reaction temperature, polymerization pressure, and ligand structure of the catalyst. The results show good catalytic performance (70.48 kg PE/mol Ti·h) for ethylene polymerization because of the existence of ortho substituent hindrance on the salicylaldehyde skeleton. Furthermore, high-temperature gel permeation chromatography (GPC)-IR, differential scanning calorimetry (DSC), and torque rheometer were used to characterize the microstructure, thermal properties, and viscoelastic state of the polyethylene samples obtained. The results showed that the product was ultrahigh-molecular-weight polyethylene.
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Affiliation(s)
- Tianyu Lan
- College
of Chemistry and Chemical Engineering, Northeast
Petroleum University, Heilongjiang 163318, P. R. China
- Heilongjiang
Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar University, 42 Wenhua Street, Jianhua District, Qiqihar 161006, P. R.
China
| | - Na Zhang
- College
of Chemistry and Chemical Engineering, Northeast
Petroleum University, Heilongjiang 163318, P. R. China
| | - Liduo Chen
- College
of Chemistry and Chemical Engineering, Northeast
Petroleum University, Heilongjiang 163318, P. R. China
| | - Cuiqin Li
- College
of Chemistry and Chemical Engineering, Northeast
Petroleum University, Heilongjiang 163318, P. R. China
| | - Jun Wang
- College
of Chemistry and Chemical Engineering, Northeast
Petroleum University, Heilongjiang 163318, P. R. China
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29
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Shi Z, Wang Y, Xiao T, Dong S, Lan T. Preparation and Thermal Decomposition Kinetics of a New Type of a Magnetic Targeting Drug Carrier. ACS Omega 2021; 6:3427-3433. [PMID: 33553961 PMCID: PMC7860512 DOI: 10.1021/acsomega.0c06075] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 01/06/2021] [Indexed: 05/15/2023]
Abstract
We have designed a new magnetic targeting drug carrier Fe3O4-PVA with a core of triiron tetroxide (Fe3O4) and a shell made of polyvinyl alcohol (PVA) to improve the hydrophilicity of Fe3O4. With adriamycin hydrochloride as a model drug, this study goes on to measure the drug carrier performance of Fe3O4-PVA. In addition, the thermal stability and enthalpy of thermal decomposition of Fe3O4-PVA were measured using a differential scanning calorimeter with a non-isothermal decomposition method. The kinetics of thermal decomposition of Fe3O4-PVA were also investigated. Over the course of this study, it was determined that the resulting drug carrier Fe3O4-PVA exhibited high drug loading levels and excellent release levels.
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Affiliation(s)
- Zhen Shi
- College
of Materials Science and Engineering, Qiqihar
University, Qiqihar 161006, Heilongjiang, China
- Heilongjiang
Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar 161006, China
| | - Yazhen Wang
- College
of Materials Science and Engineering, Qiqihar
University, Qiqihar 161006, Heilongjiang, China
- Heilongjiang
Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar 161006, China
- College
of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, Heilongjiang, China
| | - Tianyuan Xiao
- Heilongjiang
Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar 161006, China
| | - Shaobo Dong
- Heilongjiang
Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar 161006, China
| | - Tianyu Lan
- Heilongjiang
Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar 161006, China
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30
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Lan T, Chen L, Zhang N, Wang J. Synthesis and ethylene polymerization reaction of dendritic titanium catalysts. Des Monomers Polym 2021; 24:13-21. [PMID: 33536834 PMCID: PMC7832008 DOI: 10.1080/15685551.2020.1868666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The 1.0 G dendrimer (C22H48N10O4),3,5-di-tert-butylsalicylaldehyde and TiCl4 · 2THF were used as the synthetic materials, and the dendritic salicylaldehyde imide ligand with substituent hindrance and its titanium catalyst were synthesized by the condensation reaction of schiff base. The structure of the synthesized products was characterized by infrared spectroscopy, nuclear magnetic resonance hydrogen spectroscopy, ultraviolet spectroscopy, electrospray mass spectrometry, and inductively coupled plasma mass spectrometry, The actual structure is consistent with the theoretical design structure. Activated methylaluminoxane (MAO) was used as a catalyst precursor for ethylene polymerization in the process of ethylene catalytic. The effects of ethylene polymerization were studied in terms of the Al/Ti molar ratio, reaction time, reaction temperature, polymerization pressure, and ligand structure of the catalyst. The results show at the reaction temperature of 25°C, the reaction time was 30 min, and the ethylene pressure was 1.0 MPa and Al/Ti was 1,000, the catalytic activity can reach 78.56 kg PE/(mol Ti.h). Furthermore, high-temperature GPC-IR, DSC, and torque rheometer were used to characterized the microstructure, thermal properties, and viscoelastic state of polyethylene samples obtained. The results showed that the product was ultra-high-molecular-weight polyethylene.
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Affiliation(s)
- Tianyu Lan
- College of Chemistry and Chemical Engineering, Northeast Petroleum University, Heilongjiang, China.,Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials,Qiqihar University, China
| | - Liduo Chen
- College of Chemistry and Chemical Engineering, Northeast Petroleum University, Heilongjiang, China
| | - Na Zhang
- College of Chemistry and Chemical Engineering, Northeast Petroleum University, Heilongjiang, China
| | - Jun Wang
- College of Chemistry and Chemical Engineering, Northeast Petroleum University, Heilongjiang, China
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31
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Shi Z, Wang Y, Dong S, Lan T. Comparison of the performance of magnetic targeting drug carriers prepared using two synthesis methods. RSC Adv 2021; 11:20670-20678. [PMID: 35479366 PMCID: PMC9033997 DOI: 10.1039/d1ra04256d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 06/03/2021] [Indexed: 11/23/2022] Open
Abstract
In this paper, two methods were used to prepare the magnetic targeting drug carrier Fe3O4–PVA@SH, the step-by-step method and the one-pot method. The loading and release properties of the compound were measured. The results show that the Fe3O4–PVA@SH prepared using both methods exhibited excellent drug delivery properties in an environment that simulates human body fluid (pH 7.2) and a lysosomal in vitro simulation (pH 4.7). In applications such as drug delivery, magnetic targeted drug carriers prepared by both methods demonstrated superparamagnetism, high fat solubility, high hydroxyl content, and good water solubility. Roadmap for the synthesis of Fe3O4–PVA@SH using the step-by-step method and one-pot method.![]()
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Affiliation(s)
- Zhen Shi
- College of Materials Science and Engineering
- Qiqihar University
- Qiqihar 161006
- China
- Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials
| | - Yazhen Wang
- College of Materials Science and Engineering
- Qiqihar University
- Qiqihar 161006
- China
- Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials
| | - Shaobo Dong
- Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials
- Qiqihar 161006
- China
| | - Tianyu Lan
- Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials
- Qiqihar 161006
- China
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32
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Wang Y, Shi Z, Sun Y, Wu X, Li S, Dong S, Lan T. Preparation of amphiphilic magnetic polyvinyl alcohol targeted drug carrier and drug delivery research. Des Monomers Polym 2020; 23:197-206. [PMID: 33177950 PMCID: PMC7594732 DOI: 10.1080/15685551.2020.1837442] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Currently, magnetic applications have great potential for development in the field of drug carriers. In this paper, Fe3O4-PVA@SH, an amphiphilic magnetically targeting drug carrier, was prepared by using Fe3O4 and PVA with thiohydrazide-iminopropyltriethoxysilane(TIPTS). The loading capacity of Fe3O4-PVA@SH on Aspirin and the drug release kinetics of loaded drugs were studied. The obtained Fe3O4-PVA@SH exhibits excellent drug release properties in simulating the human body fluid environment (pH 7.2). Since magnetically targeting drug carriers are readily available and have excellent biocompatibility and the characteristics of drug release. This work’s development, preparing amphiphilic magnetically targeting drug carriers in drug delivery and other fields, has great significance.
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Affiliation(s)
- Yazhen Wang
- College of Materials Science and Engineering, Qiqihar University, Qiqihar, China.,Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar, China.,College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, China
| | - Zhen Shi
- College of Materials Science and Engineering, Qiqihar University, Qiqihar, China.,Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar, China
| | - Yu Sun
- Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar, China
| | - Xueying Wu
- Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar, China
| | - Shuang Li
- Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar, China
| | - Shaobo Dong
- Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar, China
| | - Tianyu Lan
- Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar, China
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33
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Abstract
The basalt fiber (BF) and polyamide 6 (PA6) reinforced HDPE composite were prepared; the effects of adding fiber, organic filler, and polar component maleic anhydride (MA) on the microstructural characteristics of composites were investigated. Microstructural characterization evidenced the binary-dispersed phase (PA6/BF) is of a core-shell structure in which the component PA6 encapsulates component BF, and the extent of encapsulates would decline with the MA adding. It is confirmed that the microstructure is related to the interfacial tension of components by the SEM observation and theoretical calculation. The effect of multi-component on the crystallization behavior of composites was investigated. Differential scanning calorimeter (DSC) analyses showed a significant change in the HDPE microstructure. It demonstrated PA6 and BF as a nucleation agent accelerated the crystallization rate under the cooling process. The corresponding crystallization kinetics and activation energy were further analyzed using the Jeziorny method, Avrami–Ozawa method, Kissinger method. The results showed MA markedly changed the crystal growth mechanism of the HDPE matrix to heterogeneous nucleation for acicular and tabular crystal growth during the annealing step. The lowest crystallinity energy and crystallinity were observed for BF/PA6/HDPE composites with 3 wt % MA. Furthermore, a clear improvement of mechanical properties (by 61%) were observed, which mechanism is discussed in detail. The mechanism of toughening is not only one, but the result of a variety of mechanisms together.
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Affiliation(s)
- Yazhen Wang
- College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China.,Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar, China.,College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, China
| | - Chenglong Wang
- College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China.,Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar, China
| | - Shaobo Dong
- Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar, China
| | - Liwu Zu
- Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar, China
| | - Tianyu Lan
- Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar, China
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34
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Wu Y, McKee G, Yu Y, Ke R, Yan Z, Jaehnig K, Xu M, Kriete M, Morton L, Qin X, Nie L, Wu T, Sun A, Lan T, Yuan B, Liu H, Gong S, Long T, Duan X, Ye M. Development of a 32-channel Beam Emission Spectroscopy diagnostic based on Neutral Beam Injection on HL-2A tokamak. Fusion Engineering and Design 2020. [DOI: 10.1016/j.fusengdes.2020.111734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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35
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Tian X, Wang F, Zhao Y, Lan T, Yu K, Zhang L, Qin Z, Hu Z, Yao Y, Ni Z, Sun Q, Rossi V, Peng H, Xin M. Heat shock transcription factor A1b regulates heat tolerance in wheat and Arabidopsis through OPR3 and jasmonate signalling pathway. Plant Biotechnol J 2020; 18:1109-1111. [PMID: 31559685 PMCID: PMC7152600 DOI: 10.1111/pbi.13268] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 09/14/2019] [Accepted: 09/19/2019] [Indexed: 05/06/2023]
Affiliation(s)
- Xuejun Tian
- State Key Laboratory for AgrobiotechnologyKey Laboratory of Crop Heterosis and Utilization (MOE)Key Laboratory of Crop Genomics and Genetic Improvement (MOA)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijingChina
| | - Fei Wang
- State Key Laboratory for AgrobiotechnologyKey Laboratory of Crop Heterosis and Utilization (MOE)Key Laboratory of Crop Genomics and Genetic Improvement (MOA)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijingChina
| | - Yue Zhao
- State Key Laboratory for AgrobiotechnologyKey Laboratory of Crop Heterosis and Utilization (MOE)Key Laboratory of Crop Genomics and Genetic Improvement (MOA)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijingChina
| | - Tianyu Lan
- State Key Laboratory for AgrobiotechnologyKey Laboratory of Crop Heterosis and Utilization (MOE)Key Laboratory of Crop Genomics and Genetic Improvement (MOA)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijingChina
| | - Kuohai Yu
- State Key Laboratory for AgrobiotechnologyKey Laboratory of Crop Heterosis and Utilization (MOE)Key Laboratory of Crop Genomics and Genetic Improvement (MOA)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijingChina
| | - Liyuan Zhang
- State Key Laboratory for AgrobiotechnologyKey Laboratory of Crop Heterosis and Utilization (MOE)Key Laboratory of Crop Genomics and Genetic Improvement (MOA)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijingChina
| | - Zhen Qin
- State Key Laboratory for AgrobiotechnologyKey Laboratory of Crop Heterosis and Utilization (MOE)Key Laboratory of Crop Genomics and Genetic Improvement (MOA)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijingChina
| | - Zhaorong Hu
- State Key Laboratory for AgrobiotechnologyKey Laboratory of Crop Heterosis and Utilization (MOE)Key Laboratory of Crop Genomics and Genetic Improvement (MOA)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijingChina
| | - Yingyin Yao
- State Key Laboratory for AgrobiotechnologyKey Laboratory of Crop Heterosis and Utilization (MOE)Key Laboratory of Crop Genomics and Genetic Improvement (MOA)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijingChina
| | - Zhongfu Ni
- State Key Laboratory for AgrobiotechnologyKey Laboratory of Crop Heterosis and Utilization (MOE)Key Laboratory of Crop Genomics and Genetic Improvement (MOA)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijingChina
| | - Qixin Sun
- State Key Laboratory for AgrobiotechnologyKey Laboratory of Crop Heterosis and Utilization (MOE)Key Laboratory of Crop Genomics and Genetic Improvement (MOA)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijingChina
| | - Vincenzo Rossi
- Council for Agricultural Research and EconomicsResearch Centre for Cereal and Industrial CropsBergamoItaly
| | - Huiru Peng
- State Key Laboratory for AgrobiotechnologyKey Laboratory of Crop Heterosis and Utilization (MOE)Key Laboratory of Crop Genomics and Genetic Improvement (MOA)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijingChina
| | - Mingming Xin
- State Key Laboratory for AgrobiotechnologyKey Laboratory of Crop Heterosis and Utilization (MOE)Key Laboratory of Crop Genomics and Genetic Improvement (MOA)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijingChina
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36
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Wang Y, Liu L, Jiang S, Li S, Lan T, Zu L, Dong S. Synthesis of Modified TiO
2
Nanoparticles with Polyacrylonitrile and Poly(hydroxyethyl acrylate) via ATRP. ChemistrySelect 2020. [DOI: 10.1002/slct.202000134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Yazhen Wang
- College of Chemistry and Chemical EngineeringQiqihar University Qiqihar 161006 China
- College of ChemistryChemical Engineering and Resource UtilizationNortheast Forestry University Harbin 150040 China
| | - Li Liu
- College of Chemistry and Chemical EngineeringQiqihar University Qiqihar 161006 China
| | - Shengyue Jiang
- College of Chemistry and Chemical EngineeringQiqihar University Qiqihar 161006 China
| | - Shuang Li
- College of Materials Science and EngineeringHeilongjiang Province Key Laboratory of Polymeric Composition MaterialQiqihar University Qiqihar 161006 China
| | - Tianyu Lan
- College of Materials Science and EngineeringHeilongjiang Province Key Laboratory of Polymeric Composition MaterialQiqihar University Qiqihar 161006 China
| | - Liwu Zu
- College of Materials Science and EngineeringHeilongjiang Province Key Laboratory of Polymeric Composition MaterialQiqihar University Qiqihar 161006 China
| | - Shaobo Dong
- College of Materials Science and EngineeringHeilongjiang Province Key Laboratory of Polymeric Composition MaterialQiqihar University Qiqihar 161006 China
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37
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Wang J, Liu J, Chen L, Lan T, Wang L. Nickel complexes based on hyperbranched bispyridylamine ligands as catalyst precursors for ethylene oligomerization. Journal of Chemical Research 2019. [DOI: 10.1177/1747519819897579] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A series of nickel complexes containing bispyridylamine ligands is synthesized and characterized by UV-Vis, FTIR, 1H NMR, ESI-MS, and elemental analysis. All nickel complexes activated with methylaluminoxane exhibited moderate activity for ethylene oligomerization (5.30 × 104 to 2.54 × 105 g/(mol·Ni·h)), producing oligomers in the range C4–C18. The effects of reaction temperature, reaction pressure, Al/Ni molar ratio, and solvent type on the catalytic activity and product selectivity are also investigated. The resulting products are mainly low-carbon olefins (C4 and C6). Under the optimized conditions, the complex with R1 = C4H9 formed by the reaction of the corresponding ligand R1 = C4H9 with NiCl2·6H2O showed a higher catalytic activity of 2.54 × 105 g/(mol·Ni·h) compared to the complex with R2 = C6H13 and R3 = C6H11 using toluene as the solvent. Moreover, the selectivity for the C4 and C6 oligomers can reach up to 82%.
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Affiliation(s)
- Jun Wang
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing, P.R. China
| | - Jinyi Liu
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing, P.R. China
| | - Liduo Chen
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing, P.R. China
| | - Tianyu Lan
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing, P.R. China
| | - Libo Wang
- Daqing Chemical Research Center of Petrochemical Research Institute, Daqing, P.R. China
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38
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Liu J, Wang J, Chen L, Zhang N, Lan T, Wang L. Ethylene Oligomerization Study Bearing Nickel (II) and Cobalt (II) Complexes with N, O‐Donor Schiff Bases as Ligands. ChemistrySelect 2019. [DOI: 10.1002/slct.201903599] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jinyi Liu
- Provincial Key Laboratory of Oil & Gas Chemical TechnologyCollege of Chemistry & Chemical EngineeringNortheast Petroleum University, Daqing 163318 Heilongjiang Province China
| | - Jun Wang
- Provincial Key Laboratory of Oil & Gas Chemical TechnologyCollege of Chemistry & Chemical EngineeringNortheast Petroleum University, Daqing 163318 Heilongjiang Province China
| | - Liduo Chen
- Provincial Key Laboratory of Oil & Gas Chemical TechnologyCollege of Chemistry & Chemical EngineeringNortheast Petroleum University, Daqing 163318 Heilongjiang Province China
| | - Na Zhang
- Provincial Key Laboratory of Oil & Gas Chemical TechnologyCollege of Chemistry & Chemical EngineeringNortheast Petroleum University, Daqing 163318 Heilongjiang Province China
| | - Tianyu Lan
- Provincial Key Laboratory of Oil & Gas Chemical TechnologyCollege of Chemistry & Chemical EngineeringNortheast Petroleum University, Daqing 163318 Heilongjiang Province China
| | - Libo Wang
- Daqing Chemical Research Center of Petrochemical Research Institute, Daqing 163714 Heilongjiang Province China
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39
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Sun Y, Cheng J, Luo Y, Yan XL, Wu ZX, He LL, Tan YR, Zhou ZH, Li QN, Zhou L, Wu RT, Lan T, Ma JY. Attenuation of a virulent swine acute diarrhea syndrome coronavirus strain via cell culture passage. Virology 2019; 538:61-70. [PMID: 31580972 PMCID: PMC7112038 DOI: 10.1016/j.virol.2019.09.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 09/16/2019] [Accepted: 09/18/2019] [Indexed: 12/21/2022]
Abstract
Swine acute diarrhea syndrome coronavirus (SADS-CoV) is a newly identified enteric alphacoronavirus that causes fatal diarrhea in newborn piglets in China. Here, we propagated a virulent strain SADS-CoV/CN/GDWT/2017 in Vero cells for up to 83 passages. Four strains of SADS-CoV/GDWT-P7, -P18, -P48 and -P83 were isolated and characterized. Sequence alignments showed that these four novel strains exhibited 16 nucleotide mutations and resultant 10 amino acid substitutions in open reading frame 1a/1b, spike, NS3a, envelope, membrane and nucleocapsid proteins. Furthermore, a 58-bp deletion in NS7a/7b was found in P48 and P83 strains, which led to the loss of NS7b and 38 amino acid changes of NS7a. Pig infection studies showed that the P7 strain caused typical watery diarrhea, while the P83 strain induced none-to-mild, delayed and transient diarrhea. This is the first report on cell adaption of a virulent SADS-CoV strain, which gives information on the potential virulence determinants of SADS-CoV.
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Affiliation(s)
- Y Sun
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - J Cheng
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Y Luo
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - X L Yan
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Z X Wu
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - L L He
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Y R Tan
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Z H Zhou
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Q N Li
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - L Zhou
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - R T Wu
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - T Lan
- College of Animal Science, South China Agricultural University, Guangzhou, China.
| | - J Y Ma
- College of Animal Science, South China Agricultural University, Guangzhou, China.
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40
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Guo Q, Lan T, Wu G, Chen Y, Xiao T, Xu Y, Ma Z, Liao M, Shen X. Acidity-Activated Charge-Convertible Silver Nanocomposites for Enhanced Bacteria-Specific Aggregation and Antibacterial Activity. Biomacromolecules 2019; 20:3031-3040. [DOI: 10.1021/acs.biomac.9b00598] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Qianqian Guo
- The Department of Pharmaceutical Engineering (State Key Laboratory of Functions and Applications of Medicinal Plants, the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
- The Department of Pharmacology of Material Medical (High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Drug Ability, the Union Key Laboratory of Guiyang City-Guizhou Medical University), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
| | - Tianyu Lan
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550025, Guizhou, China
| | - Guoping Wu
- The Department of Pharmaceutical Engineering (State Key Laboratory of Functions and Applications of Medicinal Plants, the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
- The Department of Pharmacology of Material Medical (High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Drug Ability, the Union Key Laboratory of Guiyang City-Guizhou Medical University), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
| | - Yi Chen
- The Department of Pharmaceutical Engineering (State Key Laboratory of Functions and Applications of Medicinal Plants, the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
- The Department of Pharmacology of Material Medical (High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Drug Ability, the Union Key Laboratory of Guiyang City-Guizhou Medical University), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
| | - Ting Xiao
- The Department of Pharmaceutical Engineering (State Key Laboratory of Functions and Applications of Medicinal Plants, the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
- The Department of Pharmacology of Material Medical (High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Drug Ability, the Union Key Laboratory of Guiyang City-Guizhou Medical University), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
| | - Yini Xu
- The Department of Pharmaceutical Engineering (State Key Laboratory of Functions and Applications of Medicinal Plants, the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
- The Department of Pharmacology of Material Medical (High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Drug Ability, the Union Key Laboratory of Guiyang City-Guizhou Medical University), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
| | - Zhaoxiong Ma
- The Department of Pharmaceutical Engineering (State Key Laboratory of Functions and Applications of Medicinal Plants, the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
- The Department of Pharmacology of Material Medical (High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Drug Ability, the Union Key Laboratory of Guiyang City-Guizhou Medical University), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
| | - Mingsong Liao
- The Department of Pharmaceutical Engineering (State Key Laboratory of Functions and Applications of Medicinal Plants, the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
- The Department of Pharmacology of Material Medical (High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Drug Ability, the Union Key Laboratory of Guiyang City-Guizhou Medical University), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
| | - Xiangchun Shen
- The Department of Pharmaceutical Engineering (State Key Laboratory of Functions and Applications of Medicinal Plants, the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
- The Department of Pharmacology of Material Medical (High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Drug Ability, the Union Key Laboratory of Guiyang City-Guizhou Medical University), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
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41
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Lan T, Guo Q, Shen X. Polyethyleneimine and quaternized ammonium polyethyleneimine: the versatile materials for combating bacteria and biofilms. Journal of Biomaterials Science, Polymer Edition 2019; 30:1243-1259. [DOI: 10.1080/09205063.2019.1627650] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Tianyu Lan
- School of Chemical Engineering, Guizhou Minzu University, University Town, Guizhou, China
| | - Qianqian Guo
- The Department of pharmaceutical Engineering (State Key Laboratory of Functions and Applications of Medicinal Plants, the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guizhou, China
| | - Xiangchun Shen
- The Department of pharmaceutical Engineering (State Key Laboratory of Functions and Applications of Medicinal Plants, the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guizhou, China
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42
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Affiliation(s)
- Jun Wang
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing, Heilongjiang Province, China
| | - Jinyi Liu
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing, Heilongjiang Province, China
| | - Tianyu Lan
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing, Heilongjiang Province, China
| | - Liduo Chen
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing, Heilongjiang Province, China
| | - Libo Wang
- Daqing Chemical Research Center of Petrochemical Research Institute, Daqing, China
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Guo Q, Lan T, Chen Y, Xu Y, Peng J, Tao L, Shen X. Enhanced of antibacterial activity of antibiotic-functionalized silver nanocomposites with good biocompatibility. J Mater Sci Mater Med 2019; 30:34. [PMID: 30840138 DOI: 10.1007/s10856-019-6236-8] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 02/12/2019] [Indexed: 06/09/2023]
Abstract
Antimicrobial resistance to traditional antibiotics leads to a serious concern for medical care owing to ineffective antibiotic therapies. This study focused on the preparation of silver nanocomposites (AgNPs@Tob&PAGA) by modifying AgNPs with tobramycin (Tob) and carbohydrate polymer of poly(2-(acrylamido) glucopyranose) (PAGA). The enhanced antibacterial activities of nanocomposites against common pathogens of Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) were explored. The introduction of PAGA onto silver nanocomposites improved both citocompatibility and antibacterial activity. Compared with nude Tob, AgNPs@Tob&PAGA showed more fascinating antimicrobial effect against E. coli and S. aureus with about 20-fold increase in the antibacterial activity, simultaneously no detectable resistance was observed. Consequently, the silver nanocomposite as an antimicrobial agent presents promising prospects in the treatment of bacterial infections caused by antimicrobial resistant bacteria.
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Affiliation(s)
- Qianqian Guo
- The Department of pharmaceutical Engineering (State Key Laboratory of Functions and Applications of Medicinal Plants, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou, 550025, China.
| | - Tianyu Lan
- School of Chemical Engineering, Guizhou Minzu University, Guiyang, Guizhou, 550025, China
| | - Yi Chen
- The Department of pharmaceutical Engineering (State Key Laboratory of Functions and Applications of Medicinal Plants, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou, 550025, China
| | - Yini Xu
- The Department of pharmaceutical Engineering (State Key Laboratory of Functions and Applications of Medicinal Plants, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou, 550025, China
| | - Jianqing Peng
- The Department of pharmaceutical Engineering (State Key Laboratory of Functions and Applications of Medicinal Plants, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou, 550025, China
| | - Ling Tao
- The Department of pharmaceutical Engineering (State Key Laboratory of Functions and Applications of Medicinal Plants, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou, 550025, China
| | - Xiangchun Shen
- The Department of pharmaceutical Engineering (State Key Laboratory of Functions and Applications of Medicinal Plants, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou, 550025, China.
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Feng X, Liu AD, Zhou C, Wang MY, Zhang J, Liu ZY, Liu Y, Zhou TF, Zhang SB, Kong DF, Hu LQ, Ji JX, Fan HR, Li H, Lan T, Xie JL, Mao WZ, Liu ZX, Ding WX, Zhuang G, Liu WD. Five-channel tunable W-band Doppler backscattering system in the experimental advanced superconducting tokamak. Rev Sci Instrum 2019; 90:024704. [PMID: 30831725 DOI: 10.1063/1.5075615] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 01/18/2019] [Indexed: 06/09/2023]
Abstract
A 5-channel Doppler backscattering system has been designed and installed in the Experimental Advanced Superconducting Tokamak (EAST). Through an I/Q-type double sideband modulator and a frequency multiplier, an array of finely spaced (Δf = 400 MHz) frequencies that span 1.6 GHz has been created. The center of the array bandwidth is tunable within the range of 75-97.8 GHz, which covers most of the W band (75-110 GHz). The incident angle can be adjusted from -4° to 12°, and the wavenumber range is 4-15 cm-1 with a wavenumber resolution of Δk/k ≤ 0.35. Ray tracing is used to calculate the scattering location and the scattering wavenumber. This article details the hardware design, the ray tracing, and the preliminary experimental results from EAST plasmas.
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Affiliation(s)
- X Feng
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - A D Liu
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - C Zhou
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - M Y Wang
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - J Zhang
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - Z Y Liu
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - Y Liu
- Institute of Plasma Physics, Chinese Academy of Sciences, Anhui, Hefei 230031, China
| | - T F Zhou
- Institute of Plasma Physics, Chinese Academy of Sciences, Anhui, Hefei 230031, China
| | - S B Zhang
- Institute of Plasma Physics, Chinese Academy of Sciences, Anhui, Hefei 230031, China
| | - D F Kong
- Institute of Plasma Physics, Chinese Academy of Sciences, Anhui, Hefei 230031, China
| | - L Q Hu
- Institute of Plasma Physics, Chinese Academy of Sciences, Anhui, Hefei 230031, China
| | - J X Ji
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - H R Fan
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - H Li
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - T Lan
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - J L Xie
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - W Z Mao
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - Z X Liu
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - W X Ding
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - G Zhuang
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - W D Liu
- KTX Laboratory and Department of Engineering and Applied Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
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Gong S, Yu Y, Xu M, Sun A, Lan T, Liu H, Zhong W, Shi Z, Wang H, Wu Y, Yuan B, Mao S, Ye M, Duan X. Development and preliminary results of phase contrast imaging diagnostic on HL-2A. Fusion Engineering and Design 2019. [DOI: 10.1016/j.fusengdes.2019.01.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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46
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Lan T. MIDDLE-AGED HEALTH RISK PROFILE AND OLD-AGED DISABILITY RISK. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.1130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- T Lan
- National Yang-Ming University
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47
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Wang MY, Zhou C, Liu AD, Zhang J, Liu ZY, Feng X, Ji JX, Li H, Lan T, Xie JL, Liu SQ, Ding WX, Mao WZ, Zhuang G, Liu WD. A novel, tunable, multimodal microwave system for microwave reflectometry system. Rev Sci Instrum 2018; 89:093501. [PMID: 30278705 DOI: 10.1063/1.5033968] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Accepted: 08/14/2018] [Indexed: 06/08/2023]
Abstract
Based on a new technique, a tunable, multi-channel system that covers the Q-band (33-55 GHz) is presented in this article. It has a potential use of the Doppler backscattering system diagnostic that can measure the turbulence radial correlation and the perpendicular velocity of turbulence by changing the incident angle. The system consists primarily of a double-sideband (DSB) modulation and a multiplier, which creates four probing frequencies. The probing frequency enables the simultaneous analysis of the density fluctuations and flows at four distinct radial regions in tokamak plasma. The amplitude of the probing frequency can be adjusted by the initial phase of the intermediate frequency (IF) input from the double-sideband, and the typical flatness is less than 10 dB. The system was tested in the lab with a rotating grating, and the results show that the system can operate in the frequency range of 33-55 GHz with a Q-band multitude and that the power of each channel can be adjusted by the phase of the IF input of DSB.
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Affiliation(s)
- M Y Wang
- Department of Physics, Nanchang University, Nanchang 330031, China
| | - C Zhou
- KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - A D Liu
- KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - J Zhang
- KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - Z Y Liu
- KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - X Feng
- KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - J X Ji
- KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - H Li
- KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - T Lan
- KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - J L Xie
- KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - S Q Liu
- Department of Physics, Nanchang University, Nanchang 330031, China
| | - W X Ding
- KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - W Z Mao
- KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - G Zhuang
- KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
| | - W D Liu
- KTX Laboratory and Department of Modern Physics, University of Science and Technology of China, Anhui, Hefei 230026, China
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Gong S, Yu Y, Xu M, Jiang W, Zhong W, Shi Z, Wang H, Wu Y, Yuan B, Lan T, Ye M, Duan X. The comparison between near-infrared and traditional CO2 phase contrast imaging on HL-2A tokamak. Fusion Engineering and Design 2018. [DOI: 10.1016/j.fusengdes.2018.06.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Yu Y, Wang HJ, Chen Z, Chen R, Lan T, Li YY, Zang Q, Zhang J, Zhao HL, Mao SF, Lyu B, Ye MY, Wan BN. Influence of neutral beam attenuation on beam emission spectroscopy and charge exchange recombination spectroscopy. Rev Sci Instrum 2018; 89:073503. [PMID: 30068091 DOI: 10.1063/1.5028205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 06/23/2018] [Indexed: 06/08/2023]
Abstract
Neutral beam attenuation is simulated by means of consulting the ADAS (Atomic Data and Analysis Structure) database based on experimentally diagnosed radial plasma density and electron temperature profiles on the Experimental Advanced Superconducting Tokamak (EAST). Two-dimensional distributions of beam emission and charge exchange recombination photon flux are simulated, taking neutral beam attenuation into account, together with comparison with experimental results of Beam Emission Spectroscopy (BES) and Charge eXchange Recombination Spectroscopy (CXRS). A photon number which is over 1014 promises a sufficient photon flux for typical detectors of BES, CXRS, and UltraFast-CXRS (UF-CXRS) diagnostics. Evidence shows that the ADAS database overvalues neutral beam injection effective stopping coefficient on the EAST tokamak. The joint diagnostic of BES and UF-CXRS which is under development to measure plasma pressure with a high temporal resolution of 1 μs will have strong signals in a radial range of 0.6 < ρ < 0.8. The steep gradients of plasma density and C6+ density at ρ ∼ 1 bring great difficulty to edge plasma investigation by this joint diagnostic.
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Affiliation(s)
- Y Yu
- School of Physics, University of Science and Technology of China, Hefei 230026, China
| | - H J Wang
- School of Physics, University of Science and Technology of China, Hefei 230026, China
| | - Z Chen
- School of Physics, University of Science and Technology of China, Hefei 230026, China
| | - R Chen
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - T Lan
- School of Physics, University of Science and Technology of China, Hefei 230026, China
| | - Y Y Li
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - Q Zang
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - J Zhang
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - H L Zhao
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - S F Mao
- School of Physics, University of Science and Technology of China, Hefei 230026, China
| | - B Lyu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - M Y Ye
- School of Physics, University of Science and Technology of China, Hefei 230026, China
| | - B N Wan
- School of Physics, University of Science and Technology of China, Hefei 230026, China
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50
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Liu YS, Liu XB, Qiu YY, Lan T, Chen Y. Molecular mechanism of Wnt signal pathway in multiple myeloma cell line H929 cell autophagy. Eur Rev Med Pharmacol Sci 2018; 22:3327-3332. [PMID: 29917182 DOI: 10.26355/eurrev_201806_15152] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Pathogenic mechanism of multiple myeloma is still unclear yet. Abnormality in cell autophagy is closely correlated with various orthopedic diseases especially multiple myeloma. Therefore, this study investigated the mechanism of cell autophagy abnormality in multiple myeloma occurrence and clinical implications. MATERIALS AND METHODS Using multiple myeloma cell line H929 as the model, cells were treated with UV irradiation. Western blot was used to measure the autophagy of H929 cell, expression level of autophagy molecules and activation of autophagy signal pathway such as Wnt. Using autophagy activator, H929 cell autophagy was potentiated, followed by quantification of autophagy molecular expression and signal pathway such as Wnt activation. Agonist or antagonist of Wnt signal pathway was used to treat H929 cells followed by measuring autophagy molecules and Wnt pathway activation. The correlation between Wnt signal pathway or cell autophagy and occurrence of multiple myeloma was analyzed. RESULTS UV irradiation treatment on multiple myeloma cell line H929 induced autophagy and Wnt signal pathway activation. The inhibitor of Wnt signal pathway suppressed UV-induced H929 cell autophagy. However, over-expression of Wnt signal pathway enhanced UV-mediated autophagy of H929 cells. The condition of Wnt activation and autophagy level were positively correlated. CONCLUSIONS UV irradiation can induce autophagy of multiple myeloma cells, suggesting that management of cell autophagy might be one possible treatment for multiple myeloma.
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Affiliation(s)
- Y-S Liu
- Guangdong Medical University, Zhanjiang, Guangdong, China.
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