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Wang S, Ge X, Lv C, Hu C, Guan H, Wu J, Wang Z, Yang X, Shi Y, Song J, Zhang Z, Watanabe A, Cai J. Oxygen vacancy-rich amorphous porous NiFe(OH) x derived from Ni(OH) x/Prussian blue as highly efficient oxygen evolution electrocatalysts. Nanoscale 2020; 12:9557-9568. [PMID: 32315004 DOI: 10.1039/d0nr00607f] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Oxygen vacancies or defects play a significant role in improving the intrinsic activities of bimetallic hydroxides towards the oxygen evolution reaction (OER); however, their rational design and preparation remain a great challenge. In this study, oxygen vacancy-rich amorphous porous nickel iron hydroxide nanolayers supported on carbon paper (NiFe(OH)x/CP) are rationally prepared through a facile approach involving the sequential electrochemical deposition of a Prussian blue (PB) nanocrystal layer and Ni(OH)x layer on carbon paper followed by an alkaline etching process, where PB nanocrystals act as an Fe source and template for the formation of an amorphous porous NiFe(OH)x layer. NiFe(OH)x/CP with an ultralow loading of 0.8 mg cm-2 exhibits outstanding OER activities, showing a low overpotential of 303 mV at 100 mA cm-2 and a small Tafel slope of 33.8 mV dec-1 in an alkaline electrolyte, which are superior to the state-of-the-art IrO2 catalysts, and among the best results compared to the reported bimetallic compounds. Moreover, NiFe(OH)x/CP exhibits excellent long-term stability with negligible degradation after water splitting for 50 h. Its superior electrocatalytic OER performance benefits from the massive oxygen vacancies derived from the amorphous and distorted structures, the synergistic effect between Ni and Fe species with an optimized Ni/Fe ratio, and the efficient electron and mass transfer of carbon paper. This work paves a new avenue for the rational design and preparation of amorphous porous structures with abundant oxygen vacancies to improve the intrinsic activities for energy storage and conversion applications.
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Affiliation(s)
- Shuang Wang
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China.
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Guo B, Li Y, Wang S, Li D, Lv C, Xu R. Characterization of the Nitrate Transporter gene family and functional identification of HvNRT2.1 in barley (Hordeum vulgare L.). PLoS One 2020; 15:e0232056. [PMID: 32324773 PMCID: PMC7179922 DOI: 10.1371/journal.pone.0232056] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [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: 12/05/2019] [Accepted: 04/06/2020] [Indexed: 11/19/2022] Open
Abstract
Nitrogen use efficiency (NUE) is the efficiency with which plants acquire and use nitrogen. Plants have high-affinity nitrate transport systems, which involve certain nitrate transporter (NRT) genes. However, limited data are available on the contribution of the NRT2/3 gene family in barley nitrate transport. In the present study, ten putative NRT2 and three putative NRT3 genes were identified using bioinformatics methods. All the HvNRT2/3 genes were located on chromosomes 3H, 5H, 6H or 7H. Remarkably, the presence of tandem repeats indicated that duplication events contributed to the expansion of the NRT2 gene family in barley. In addition, the HvNRT2/3 genes displayed various expression patterns at selected developmental stages and were induced in the roots by both low and high nitrogen levels. Furthermore, the overexpression of HvNRT2.1 improved the yield related traits in Arabidopsis. Taken together, the data generated in the present study will be useful for genome-wide analyses to determine the precise role of the HvNRT2/3 genes during barley development, with the ultimate goal of improving NUE and crop production.
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Affiliation(s)
- Baojian Guo
- Jiangsu Key Laboratory of Crop Genetics and Physiology/ Key Laboratory of Plant Functional Genomics of the Ministry of Education/ Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Agricultural College of Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, China
- Barley Research Institution of Yangzhou University, Yangzhou University, Yangzhou, China
| | - Ying Li
- Jiangsu Key Laboratory of Crop Genetics and Physiology/ Key Laboratory of Plant Functional Genomics of the Ministry of Education/ Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Agricultural College of Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, China
- Barley Research Institution of Yangzhou University, Yangzhou University, Yangzhou, China
| | - Shuang Wang
- Jiangsu Key Laboratory of Crop Genetics and Physiology/ Key Laboratory of Plant Functional Genomics of the Ministry of Education/ Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Agricultural College of Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, China
- Barley Research Institution of Yangzhou University, Yangzhou University, Yangzhou, China
| | - Dongfang Li
- Jiangsu Key Laboratory of Crop Genetics and Physiology/ Key Laboratory of Plant Functional Genomics of the Ministry of Education/ Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Agricultural College of Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, China
- Barley Research Institution of Yangzhou University, Yangzhou University, Yangzhou, China
| | - Chao Lv
- Jiangsu Key Laboratory of Crop Genetics and Physiology/ Key Laboratory of Plant Functional Genomics of the Ministry of Education/ Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Agricultural College of Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, China
- Barley Research Institution of Yangzhou University, Yangzhou University, Yangzhou, China
| | - Rugen Xu
- Jiangsu Key Laboratory of Crop Genetics and Physiology/ Key Laboratory of Plant Functional Genomics of the Ministry of Education/ Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Agricultural College of Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, China
- Barley Research Institution of Yangzhou University, Yangzhou University, Yangzhou, China
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153
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Luan H, Guo B, Shen H, Pan Y, Hong Y, Lv C, Xu R. Overexpression of Barley Transcription Factor HvERF2.11 in Arabidopsis Enhances Plant Waterlogging Tolerance. Int J Mol Sci 2020; 21:ijms21061982. [PMID: 32183237 PMCID: PMC7139581 DOI: 10.3390/ijms21061982] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [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: 02/07/2020] [Revised: 03/10/2020] [Accepted: 03/11/2020] [Indexed: 12/23/2022] Open
Abstract
Waterlogging stress significantly affects the growth, development, and productivity of crop plants. However, manipulation of gene expression to enhance waterlogging tolerance is very limited. In this study, we identified an ethylene-responsive factor from barley, which was strongly induced by waterlogging stress. This transcription factor named HvERF2.11 was 1158 bp in length and encoded 385 amino acids, and mainly expressed in the adventitious root and seminal root. Overexpression of HvERF2.11 in Arabidopsis led to enhanced tolerance to waterlogging stress. Further analysis of the transgenic plants showed that the expression of AtSOD1, AtPOD1 and AtACO1 increased rapidly, while the same genes did not do so in non-transgenic plants, under waterlogging stress. Activities of antioxidant enzymes and alcohol dehydrogenase (ADH) were also significantly higher in the transgenic plants than in the non-transgenic plants under waterlogging stress. Therefore, these results indicate that HvERF2.11 plays a positive regulatory role in plant waterlogging tolerance through regulation of waterlogging-related genes, improving antioxidant and ADH enzymes activities.
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Affiliation(s)
- Haiye Luan
- Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou 225009, China; (H.L.); (Y.P.)
- Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Yangzhou 225009, China;
| | - Baojian Guo
- Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Yangzhou 225009, China;
| | - Huiquan Shen
- Co-Innovation Center for Modern Production Technology of Grain Crops, College of Agriculture, Yangzhou 225009, China;
| | - Yuhan Pan
- Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou 225009, China; (H.L.); (Y.P.)
| | - Yi Hong
- Institutes of Agricultural Science and Technology Development, Yangzhou University, Yangzhou 225009, China;
| | - Chao Lv
- Institute of Agricultural Science in Jiangsu Coastal Areas, Yancheng 224002, China;
| | - Rugen Xu
- Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou 225009, China; (H.L.); (Y.P.)
- Institutes of Agricultural Science and Technology Development, Yangzhou University, Wenhui East Road NO. 48, Yangzhou, Jiangsu 225009, China
- Correspondence: ; Tel.: +86-0514-87979254
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154
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Wang G, Zhang Y, Yang H, Wang W, Dai YZ, Niu LG, Lv C, Xia H, Liu T. Fast-response humidity sensor based on laser printing for respiration monitoring. RSC Adv 2020; 10:8910-8916. [PMID: 35496566 PMCID: PMC9050045 DOI: 10.1039/c9ra10409g] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [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: 12/11/2019] [Accepted: 02/20/2020] [Indexed: 12/11/2022] Open
Abstract
Respiration monitoring equipment has wide applications in daily health monitoring and modern medical diagnosis. Despite significant progress being made in humidity sensors for respiration monitoring, the fabrication of the humidity sensors with low-cost, simple manufacturing process and easy integration remains a challenge. This work reports a facile and inexpensive laser printing fabrication of PEDOT:PSS micron line as a humidity sensor for respiration monitoring. Laser printing technology can process any material into an arbitrary pattern. The PEDOT:PSS micron line humidity sensor has a fast response-recovery time (0.86 s/0.59 s), demonstrating excellent performance for real-time monitoring of human respiration. Furthermore, the PEDOT:PSS micron line humidity sensor can also monitor the respiration of rats under different physiological conditions along with the drug injection. The PEDOT:PSS micron line humidity sensor features simple manufacturing process with commercial materials, and easy integration with wearable devices. This work paves an important step in real-time monitoring of human health and further physiology and pharmacology study.
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Affiliation(s)
- Gong Wang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University 2699 Qianjin Street Changchun 130012 People's Republic of China
| | - Yang Zhang
- Department of Experimental Pharmacology and Toxicology, School of Pharmacy, Jilin University Changchun Jilin Province China
| | - Han Yang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University 2699 Qianjin Street Changchun 130012 People's Republic of China
| | - Wei Wang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University 2699 Qianjin Street Changchun 130012 People's Republic of China
| | - Yun-Zhi Dai
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University 2699 Qianjin Street Changchun 130012 People's Republic of China
| | - Li-Gang Niu
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University 2699 Qianjin Street Changchun 130012 People's Republic of China
| | - Chao Lv
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University 2699 Qianjin Street Changchun 130012 People's Republic of China
| | - Hong Xia
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University 2699 Qianjin Street Changchun 130012 People's Republic of China
| | - Tao Liu
- Department of Rheumatology, First Hospital, Jilin University Changchun 130012 China
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155
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Xiong Q, Huang S, Li YH, Lv N, Lv C, Ding Y, Liu WW, Wang LL, Chen Y, Sun L, Zhao Y, Liao SY, Zhang MQ, Zhu BL, Yu L. Single‑cell RNA sequencing of t(8;21) acute myeloid leukemia for risk prediction. Oncol Rep 2020; 43:1278-1288. [PMID: 32323795 PMCID: PMC7057921 DOI: 10.3892/or.2020.7507] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 01/22/2020] [Indexed: 12/12/2022] Open
Abstract
Single-cell RNA sequencing (scRNA-seq) of bone marrow or peripheral blood samples from patients with acute myeloid leukemia (AML) enables the characterization of heterogeneous malignant cells. A total of 87 cells from two patients with t(8;21) AML were analyzed using scRNA-seq. Clustering methods were used to separate leukemia cells into different sub-populations, and the expression patterns of specific marker genes were used to annotate these populations. Among the 31 differentially expressed genes in the cells of a patient who relapsed after hematopoietic stem cell transplantation, 13 genes were identified to be associated with leukemia. Furthermore, three genes, namely AT-rich interaction domain 2, lysine methyltransferase 2A and synaptotagmin binding cytoplasmic RNA interacting protein were validated as possible prognostic biomarkers using two bulk expression datasets. Taking advantage of scRNA-seq, the results of the present study may provide clinicians with several possible biomarkers to predict the prognostic outcomes of t(8;21) AML.
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Affiliation(s)
- Qian Xiong
- Department of Hematology and BMT Center, Chinese PLA General Hospital, Beijing 100853, P.R. China
| | - Sai Huang
- Department of Hematology and BMT Center, Chinese PLA General Hospital, Beijing 100853, P.R. China
| | - Yong-Hui Li
- Department of Hematology and BMT Center, Chinese PLA General Hospital, Beijing 100853, P.R. China
| | - Na Lv
- Department of Hematology and BMT Center, Chinese PLA General Hospital, Beijing 100853, P.R. China
| | - Chao Lv
- Department of Hematology and BMT Center, Chinese PLA General Hospital, Beijing 100853, P.R. China
| | - Yi Ding
- Department of Hematology and BMT Center, Chinese PLA General Hospital, Beijing 100853, P.R. China
| | - Wen-Wen Liu
- Department of Hematology and BMT Center, Chinese PLA General Hospital, Beijing 100853, P.R. China
| | - Li-Li Wang
- Department of Hematology and BMT Center, Chinese PLA General Hospital, Beijing 100853, P.R. China
| | - Yang Chen
- School of Medicine, MOE Key Laboratory of Bioinformatics and Bioinformatics Division, Center for Synthetic and System Biology, TNLIST/Department of Automation, Tsinghua University, Beijing 100084, P.R. China
| | - Liang Sun
- School of Medicine, MOE Key Laboratory of Bioinformatics and Bioinformatics Division, Center for Synthetic and System Biology, TNLIST/Department of Automation, Tsinghua University, Beijing 100084, P.R. China
| | - Yi Zhao
- Key Laboratory of Intelligent Information Processing, Advanced Computer Research Center, Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100190, P.R. China
| | - Sheng-You Liao
- Key Laboratory of Intelligent Information Processing, Advanced Computer Research Center, Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100190, P.R. China
| | - Michael Q Zhang
- School of Medicine, MOE Key Laboratory of Bioinformatics and Bioinformatics Division, Center for Synthetic and System Biology, TNLIST/Department of Automation, Tsinghua University, Beijing 100084, P.R. China
| | - Bao-Li Zhu
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, P.R. China
| | - Li Yu
- Department of Hematology and BMT Center, Chinese PLA General Hospital, Beijing 100853, P.R. China
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156
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Lu L, Qin Y, Chen C, Zhang X, Xu X, Lv C, Wan X, Ruan W, Guo X. The atheroprotective roles of heart-protecting musk pills against atherosclerosis development in apolipoprotein E-deficient mice. Ann Transl Med 2020; 7:714. [PMID: 32042730 DOI: 10.21037/atm.2019.12.22] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Background Heart-protecting musk pill (HMP), derived from Chinese herbal medicines, has been found to possess protective roles against atherosclerosis-related cardiovascular diseases (CVDs), however, the anti-atherosclerotic mechanisms of HMP are still unclear. Here, we investigated the effects of HMP on alleviating atherosclerotic lesion severity in mice and explored the molecular mechanisms. Methods Apolipoprotein E-deficient mice were fed western-type diet supplemented with HMP (25 mg/kg/day) or normal saline gavage for 20 weeks. Then histopathological staining was performed to assess the atheromatous plaque burden. Biochemical kits were used to detect levels of lipid profiles. Moreover, effector factors associated with lipid metabolism in liver and intestinal tissues were investigated by western blot and real-time PCR assays. Levels of signal molecules participating in the mitochondrial-mediated apoptosis pathway were detected by Western blot. Results We found that HMP notably reduced atherosclerotic lesion size (P<0.05) and improved plaque stability (P<0.05). HMP treatment decreased circulating TC (P<0.01), LDL-C (P<0.01) and TG (P<0.05) levels and increased HDL-C (P<0.05) content. HMP was found to suppress SREBP2, HMGCR and PCSK9 expressions (P<0.05), yet promote LDLR expression (P<0.05) in hepatocytes. Moreover, HMP was discovered to activate PPARα/CPT-1A cascade (P<0.05) and inhibit contents of SREBP1c and the lipogenic genes FAS and ACCα (P<0.05). The LBK1/AMPK cascade was also activated after HMP administration (P<0.05). Additionally, HMP was found to facilitate transintestinal cholesterol excretion by increasing ABCG5 and ABCG8 levels and reducing NPC1L1 content (P<0.05). In terms of vasoprotective activities, we observed that HMP decreased cleaved caspase-3 content (P<0.05) in the vascular intima, which might be due to inhibition of mitochondrial-related signaling pathway. Conclusions Altogether, our study indicates that HMP plays anti-atherosclerotic roles via regulating lipid metabolism and improving vascular intimal injury.
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Affiliation(s)
- Li Lu
- Department of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yating Qin
- Department of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Chen Chen
- Department of Cardiology, The Third People's Hospital of Hubei Province, Wuhan 430030, China
| | - Xinxin Zhang
- Department of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xiangyu Xu
- Department of Cardiology, The Second Hospital of Shandong University, Jinan 250000, China
| | - Chao Lv
- Department of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xiaoning Wan
- Department of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Weibin Ruan
- Department of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xiaomei Guo
- Department of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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157
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Parekh P, Ohno S, Yusa S, Lv C, Du B, Ray D, Aswal VK, Bahadur P. Synthesis, aggregation and adsorption behaviour of a thermoresponsive pentablock copolymer. POLYM INT 2020. [DOI: 10.1002/pi.5967] [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: 11/10/2022]
Affiliation(s)
- Paresh Parekh
- Chemistry Department Veer Narmad South Gujarat University Surat India
| | - Sayaka Ohno
- Graduate School of Engineering University of Hyogo Hyogo Japan
| | - Shin‐ichi Yusa
- Graduate School of Engineering University of Hyogo Hyogo Japan
| | - Chao Lv
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
| | - Binyang Du
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
| | - Debes Ray
- Solid State Physics Division Bhabha Atomic Research Centre Mumbai India
| | - Vinod Kumar Aswal
- Solid State Physics Division Bhabha Atomic Research Centre Mumbai India
| | - Pratap Bahadur
- Chemistry Department Veer Narmad South Gujarat University Surat India
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158
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Wang J, Wu N, Lv C, Yan S, Yang Y. Recommended changes for the 8th edition of the TNM classification for lung cancer-the findings of a single-institution evaluation. Ann Transl Med 2020; 8:123. [PMID: 32175416 PMCID: PMC7048979 DOI: 10.21037/atm.2020.01.129] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 01/04/2020] [Indexed: 12/24/2022]
Abstract
BACKGROUND To evaluate the efficacy of the nodal descriptors and subgroups proposed by International Association for the Study of Lung Cancer (IASLC) in the 8th edition of the TNM classification system and to provide references for future editions. METHODS A total of 3,177 patients with non-small cell lung cancer at the Beijing Cancer Hospital were classified based on the following three methods: (I) the N descriptors in the 8th edition of the TNM classification system: N0, N1, N2, and N3; (II) the IASLC-proposed N subgroups: N1a, N1b, N2a1, N2a2, and N2b; (III) our more extensive division method: N1a, N1b, N1c, N2a1, N2a2, N2b1, N2b2, N2c, N3a, and N3b. Five-year survival analysis was performed using the Kaplan-Meier method, and differences between subgroups were evaluated using the log-rank test. RESULTS (I) A significant survival difference was found between each adjacent N descriptor; (II) the difference between each adjacent subgroup N descriptor was significant, but the difference between N1b and N2a1 was not; (III) in our proposed method, a significant difference was found between all the subgroups apart from N2a2 and N2b1, N2b1 and N2b2, N2c and N3a, and N3a and N3b. CONCLUSIONS The N descriptors in the 8th edition of the tumor, node, and metastasis (TNM) classification system are consistent with our data. Although our more extensive division method could distinguish between patients at different stages, its implementation is complicated; thus, we recommend the implementation of the IASLC-proposed subgroups with the addition of the N1b and N2a1 groups.
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Affiliation(s)
- Jia Wang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Thoracic Surgery II, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Nan Wu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Thoracic Surgery II, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Chao Lv
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Thoracic Surgery II, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Shi Yan
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Thoracic Surgery II, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Yue Yang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Thoracic Surgery II, Peking University Cancer Hospital & Institute, Beijing 100142, China
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159
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Wang J, Wu N, Lv C, Yang Y. External validation of the eighth edition of the TNM classification for lung cancer in 3,611 surgically treated patients at a single institution. Ann Transl Med 2020; 8:122. [PMID: 32175415 PMCID: PMC7049062 DOI: 10.21037/atm.2020.01.128] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 01/14/2020] [Indexed: 01/07/2023]
Abstract
BACKGROUND A new revision of the tumor, node, metastasis (TNM) classification for lung cancer has been proposed by the International Association for the Study of Lung Cancer (IASLC), but external validation for it is required. This study aimed to evaluate stage groupings in the 8th edition of the TNM classification in an independent Chinese cohort. METHODS We retrospectively analyzed 3,611 patients who were diagnosed as stage I to IV non-small cell lung cancer (NSCLC) and who received surgical treatment at our institute in China between October 2009 and August 2017. Long-rank tests were used to compare survival between two adjacent stage groups. RESULTS Based on the 8th edition of the TNM classification, differences between every 2 adjacent stage groups were found to be significant except between Ia1 and Ia2 (P=0.062), and between IIIc and IVa (P=0.063). Significant differences were found between every 2 adjacent categories stratified by the T and N descriptors. Additionally, significant differences were found between M0 and M1a (P<0.001), while no significant difference was observed between M1a and M1b (P=0.092). CONCLUSIONS Our study provides an external validation of the stage groupings in the 8th edition of the TNM staging system in surgically treated Chinese patients with NSCLC.
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Affiliation(s)
- Jia Wang
- Department of Thoracic Surgery II, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Nan Wu
- Department of Thoracic Surgery II, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Chao Lv
- Department of Thoracic Surgery II, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Yue Yang
- Department of Thoracic Surgery II, Peking University Cancer Hospital & Institute, Beijing 100142, China
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160
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Guan Y, Wang D, Lv C, Zhang Y, Gelbic I, Ye X. Archives of microbiology: screening of pectinase-producing bacteria from citrus peel and characterization of a recombinant pectate lyase with applied potential. Arch Microbiol 2020; 202:1005-1013. [PMID: 31932863 DOI: 10.1007/s00203-020-01807-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 12/13/2019] [Accepted: 01/01/2020] [Indexed: 01/25/2023]
Abstract
Pectinase is widely used in numerous industrial fields, including the food, wine, and paper industries. In this work, seven bacteria were isolated from orange peel and their pectinase production activity was assayed. One bacterium (OR-B2) identified as a Bacillus sp. showed the highest enzyme activity towards others. A gene encoding a pectate lyase designed as PelB-B2 in this work was amplified and heterogeneous expressed in E.coli. PelB-B2 was defined as a member of the PelB pectate lyase family after phylogenic tree analysis. 3D model of PelB-B2 was constructed by SWISS-MODEL and PelB-B2 showed conserved para-β structure. After inducing culture and purified by Ni-affinity chromatography, the properties of the purified PelB-B2 were assayed. Optimal pH and temperature for PelB-B2 was pH 8.0 and 50 °C, respectively. PelB-B2 showed excellent pH stability and thermostability. It was stable within pH range 3.0-11.0 and retained more than 51% activity after incubation at 40 °C, 50 °C, or 60 °C for 1 h. Furthermore, we determined that PelB-B2 was a Ca2+-dependent pectinase and the pectin extracted from citrus was the benefit substrate for PelB-B2. The Km and Vmax of PelB-B2 were 1.64 g/L and 232.56 mol/(L min), respectively. The OR-B2 can be a new resource for pectinase production and the PelB-B2 has potential for industrial application. 7 bacteria were isolated from orange peel, namely OR-B1 to OR-B7 and their pectinase activities were assayed. One pectate lyase belongs to PelB family was cloned from OR-B2 and heterogeneous expressed in E. coli. Purified PelB-B2 was further studied with its properties. Effects of pH, temperature, chemicals, substrate on the enzyme activity were assayed and the enzyme kinetic was also measured.
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Affiliation(s)
- Yi Guan
- Fujian Key Laboratory of Marine Enzyme Engineering, Fuzhou University, Fuzhou, 350116, People's Republic of China
| | - Donghuang Wang
- Fujian Key Laboratory of Marine Enzyme Engineering, Fuzhou University, Fuzhou, 350116, People's Republic of China
| | - Chao Lv
- Fujian Key Laboratory of Marine Enzyme Engineering, Fuzhou University, Fuzhou, 350116, People's Republic of China
| | - Yuewen Zhang
- Fujian Key Laboratory of Marine Enzyme Engineering, Fuzhou University, Fuzhou, 350116, People's Republic of China
| | - Ivan Gelbic
- Biology Centre Czech Academy of Sciences, Institute of Entomology, Branišovská 31, 370 05, Ceske Budejovice, Czech Republic.
| | - Xiuyun Ye
- Fujian Key Laboratory of Marine Enzyme Engineering, Fuzhou University, Fuzhou, 350116, People's Republic of China.
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161
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Lv C, Lan X, Li F, Wang L, Xiao L, Wang C, Shi J, Yu S. A facile acid treatment for P25 modification with enhanced photocatalytic H2 evolution – effect of Brønsted acid sites and oxygen vacancies. Catal Sci Technol 2020. [DOI: 10.1039/c9cy02166c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Acid treated P25 catalysts (HP25-x, x represents the treatment temperature) were successfully fabricated via a simple soaking and drying process for photocatalytic H2 production.
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Affiliation(s)
- Chao Lv
- Department of Chemistry and Pharmaceutical Science
- Qingdao Agricultural University
- Qingdao
- China
| | - Xuefang Lan
- Department of Chemistry and Pharmaceutical Science
- Qingdao Agricultural University
- Qingdao
- China
| | - Fuqiang Li
- Department of Chemistry and Pharmaceutical Science
- Qingdao Agricultural University
- Qingdao
- China
| | - Lili Wang
- Department of Chemistry and Pharmaceutical Science
- Qingdao Agricultural University
- Qingdao
- China
| | - Liqi Xiao
- Department of Chemistry and Pharmaceutical Science
- Qingdao Agricultural University
- Qingdao
- China
| | - Cheng Wang
- Department of Chemistry and Pharmaceutical Science
- Qingdao Agricultural University
- Qingdao
- China
| | - Jinsheng Shi
- Department of Chemistry and Pharmaceutical Science
- Qingdao Agricultural University
- Qingdao
- China
| | - Shuguang Yu
- Department of Chemistry and Pharmaceutical Science
- Qingdao Agricultural University
- Qingdao
- China
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162
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Zou H, Tian D, Lv C, Wu S, Lu G, Guo Y, Liu Y, Yu Y, Ding K. The synergistic effect of Co/Ni in ultrathin metal–organic framework nanosheets for the prominent optimization of non-enzymatic electrochemical glucose detection. J Mater Chem B 2020; 8:1008-1016. [DOI: 10.1039/c9tb02382h] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Co–Ni ultrathin metal organic framework nanosheets exhibited extremely high sensitivity, wide linear range, low detection limit and excellent selectivity as a glucose sensing electrode material.
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Affiliation(s)
- Haihan Zou
- School of Sciences
- Beijing Jiaotong University
- Beijing
- P. R. China
| | - Dongyan Tian
- School of Sciences
- Beijing Jiaotong University
- Beijing
- P. R. China
| | - Chao Lv
- School of Sciences
- Beijing Jiaotong University
- Beijing
- P. R. China
| | - Songmei Wu
- School of Sciences
- Beijing Jiaotong University
- Beijing
- P. R. China
| | - Guanxuan Lu
- School of Sciences
- Beijing Jiaotong University
- Beijing
- P. R. China
| | - Yifan Guo
- School of Sciences
- Beijing Jiaotong University
- Beijing
- P. R. China
| | - Yubin Liu
- School of Sciences
- Beijing Jiaotong University
- Beijing
- P. R. China
| | - Yu Yu
- School of Sciences
- Beijing Jiaotong University
- Beijing
- P. R. China
| | - Kejian Ding
- School of Sciences
- Beijing Jiaotong University
- Beijing
- P. R. China
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163
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Wang J, Zhang W, Lv C, Wang Y, Ma B, Zhang H, Fan Z, Li M, Li X. A novel biscoumarin compound ameliorates cerebral ischemia reperfusion-induced mitochondrial oxidative injury via Nrf2/Keap1/ARE signaling. Neuropharmacology 2019; 167:107918. [PMID: 31874170 DOI: 10.1016/j.neuropharm.2019.107918] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [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: 06/25/2019] [Revised: 12/03/2019] [Accepted: 12/18/2019] [Indexed: 12/31/2022]
Abstract
Some phytochemical-derived synthetic compounds have been shown to improve neurological disorders, especially in ischemic stroke. In this study, we identified a novel biscoumarin compound, known as COM 3, which had substantial antioxidant effects in neurons. Next, we found that COM 3 occupies a critical binding site between the Nrf2 and Keap1 dipolymer, impairing the inhibitory effects of Keap1 on Nrf2, both of which play central roles in increasing endogenous antioxidant activity. We verified that COM 3 could increase the survival of neurons experiencing oxygen and glucose deprivation (OGD) from 51.1% to 77.2% when exposure to 2.5 and 10 μg/mL of COM 3, respectively. In addition, the same concentrations of COM 3 could reduce brain infarct volumes by 33.8%to13.7%, respectively, while also reducing the neurobehavioral score from 3.3 to 1.4 on average in mice with a middle cerebral artery occlusion (MCAO). COM 3 reduced neuronal death from 36.5% to 13.9% and apoptosis from 35.1% to 18.2%. In addition, COM 3 could improve the neuronal mitochondrial energy metabolism after experiencing oxidative stress caused by OGD or MCAO. The present study suggests that COM 3 protects against OGD in neurons and MCAO in mice by interfering with the structure of Keap1 to activate the nuclear transcription of Nrf2, which balances endogenous redox activity and restores mitochondrial function. Hence, COM 3 might be a potential therapeutic agent for ischemic stroke in the clinic.
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Affiliation(s)
- Jun Wang
- Department of Neurosurgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Wentong Zhang
- Department of Digestive Diseases, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Chao Lv
- Department of Neurosurgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Yangang Wang
- Department of Neurosurgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Bo Ma
- Department of Pharmacology, The Fourth Military Medical University, Xi'an, China
| | - Haomeng Zhang
- Department of Orthopedics, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - Zhaoyang Fan
- Department of Pharmacology, The Fourth Military Medical University, Xi'an, China
| | - Mingkai Li
- Department of Pharmacology, The Fourth Military Medical University, Xi'an, China.
| | - Xia Li
- Department of Neurosurgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China.
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Xu M, Zhang T, Lv C, Niu Q, Zong W, Tang J, Liu R. Perfluorodecanoic acid-induced oxidative stress and DNA damage investigated at the cellular and molecular levels. Ecotoxicol Environ Saf 2019; 185:109699. [PMID: 31561076 DOI: 10.1016/j.ecoenv.2019.109699] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 09/18/2019] [Accepted: 09/19/2019] [Indexed: 05/15/2023]
Abstract
Perfluorodecanoic acid (PFDA) has been widely used in production of many daily necessities because of its special nature. Althoughtoxic effects of PFDA to organisms have been reported, there is little research on the genotoxicity induced by oxidative stress of PFDA on the cellular and molecular levels simultaneously. Thus, we investigated the DNA oxidative damage caused by PFDA in mouse hepatocytes. On the cellular level, an increase in ROS content indicated that PFDA caused oxidative stress in mouse hepatocytes. In addition, after PFDA exposure, the comet assay confirmed DNA strand breaks and an increased 8-OHdG content demonstrated DNA oxidative damage. On the molecular level, the microenvironment of aromatic amino acids, skeleton and secondary structure of catalase (CAT) were varied after PFDA exposure and the enzyme activity was reduced because PFDA bound near the heme groups of CAT. Moreover, PFDA was shown to interact with DNA molecule by groove binding. This study suggests that PFDA can cause genotoxicity by inducing oxidative stress both on the cellular and molecular levels.
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Affiliation(s)
- Mengchen Xu
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, Shandong Province, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China
| | - Tong Zhang
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, Shandong Province, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China
| | - Chao Lv
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, Shandong Province, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China
| | - Qigui Niu
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, Shandong Province, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China
| | - Wansong Zong
- College of Population, Resources and Environment, Shandong Normal University, 88# East Wenhua Road, Jinan, 250014, PR China
| | - Jingchun Tang
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, PR China
| | - Rutao Liu
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, Shandong Province, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, PR China.
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165
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Si J, Ma Y, Bi JW, Xiong Y, Lv C, Li S, Wu N, Yang Y. Shisa3 brakes resistance to EGFR-TKIs in lung adenocarcinoma by suppressing cancer stem cell properties. J Exp Clin Cancer Res 2019; 38:481. [PMID: 31801598 PMCID: PMC6894286 DOI: 10.1186/s13046-019-1486-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 11/22/2019] [Indexed: 12/31/2022]
Abstract
Background Although EGFR tyrosine kinase inhibitors (EGFR-TKIs) are beneficial to lung adenocarcinoma patients with sensitive EGFR mutations, resistance to these inhibitors induces a cancer stem cell (CSC) phenotype. Here, we clarify the function and molecular mechanism of shisa3 as a suppressor that can reverse EGFR-TKI resistance and inhibit CSC properties. Methods The suppresser genes involved in EGFR-TKI resistance were identified and validated by transcriptome sequencing, quantitative real-time PCR (qRT-PCR) and immunohistochemistry. Biological function analyses, cell half maximal inhibitory concentration (IC50), self-renewal, and migration and invasion capacities, were detected by CCK8, sphere formation and Transwell assays. Tumorigenesis and therapeutic effects were investigated in nonobese diabetic/severe combined immunodeficiency (nod-scid) mice. The underlying mechanisms were explored by Western blot and immunoprecipitation analyses. Results We found that low expression of shisa3 was related to EGFR-TKI resistance in lung adenocarcinoma patients. Ectopic overexpression of shisa3 inhibited CSC properties and the cell cycle in the lung adenocarcinoma cells resistant to gefitinib/osimertinib. In contrast, suppression of shisa3 promoted CSC phenotypes and the cell cycle in the cells sensitive to EGFR-TKIs. For TKI-resistant PC9/ER tumors in nod-scid mice, overexpressed shisa3 had a significant inhibitory effect. In addition, we verified that shisa3 inhibited EGFR-TKI resistance by interacting with FGFR1/3 to regulate AKT/mTOR signaling. Furthermore, combinational administration of inhibitors of FGFR/AKT/mTOR and cell cycle signaling could overcome EGFR-TKI resistance associated with shisa3-mediated CSC capacities in vivo. Conclusion Taken together, shisa3 was identified as a brake to EGFR-TKI resistance and CSC characteristics, probably through the FGFR/AKT/mTOR and cell cycle pathways, indicating that shisa3 and concomitant inhibition of its regulated signaling may be a promising therapeutic strategy for reversing EGFR-TKI resistance.
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Affiliation(s)
- Jiahui Si
- Department of Thoracic Surgery II, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, 52 Fucheng Road, Haidian District, Beijing, 100142, People's Republic of China
| | - Yuanyuan Ma
- Department of Thoracic Surgery II, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, 52 Fucheng Road, Haidian District, Beijing, 100142, People's Republic of China
| | - Ji Wang Bi
- Department of Thoracic Surgery II, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, 52 Fucheng Road, Haidian District, Beijing, 100142, People's Republic of China
| | - Ying Xiong
- Department of Thoracic Surgery II, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, 52 Fucheng Road, Haidian District, Beijing, 100142, People's Republic of China
| | - Chao Lv
- Department of Thoracic Surgery II, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, 52 Fucheng Road, Haidian District, Beijing, 100142, People's Republic of China
| | - Shaolei Li
- Department of Thoracic Surgery II, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, 52 Fucheng Road, Haidian District, Beijing, 100142, People's Republic of China
| | - Nan Wu
- Department of Thoracic Surgery II, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, 52 Fucheng Road, Haidian District, Beijing, 100142, People's Republic of China.
| | - Yue Yang
- Department of Thoracic Surgery II, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, 52 Fucheng Road, Haidian District, Beijing, 100142, People's Republic of China.
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166
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Lv C, Niu S, Yan S, Bai C, Yu X, Hou J, Gao W, Zhang J, Zhao Z, Yang C, Zhang Y. Low-density lipoprotein receptor-related protein 1 regulates muscle fiber development in cooperation with related genes to affect meat quality. Poult Sci 2019; 98:3418-3425. [PMID: 30982888 DOI: 10.3382/ps/pez168] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 03/13/2019] [Indexed: 12/30/2022] Open
Abstract
Low-density lipoprotein receptor-related protein 1 (LRP1) is an important signal protein that is widely involved in physiological processes, such as lipid metabolism, cell movement, and disease processes. However, the relationship between LRP1 and meat quality remains unknown in chickens. The present study aimed to investigate the correlation between LRP1 and meat quality that builds on our preliminary research, as well as to reveal the underlying molecular mechanism of LRP1 on meat-quality traits. The results showed that LRP1 was significantly correlated with shear force (P < 0.05). Several key genes involved in muscle growth and development, including IGF-1, IGFBP-5, IGF-1R, IGF-2, and MyoD, were down-regulated significantly (P < 0.05 or P < 0.01), and MSTN was up-regulated significantly (P < 0.01) in the presence of LRP1 interference. Cell proliferation- or apoptosis-related genes, including PMP22, CDKN2C, and p53, increased significantly (P < 0.05 or P < 0.01), whereas Bcl-x decreased significantly (P < 0.05) in the RNAi group. We conclude that LRP1 regulates muscle fiber development in cooperation with related genes that affect myoblast proliferation and apoptosis, thereby impacting shear force in chickens. This study will provide a valuable resource for biological investigations of muscle growth and meat-quality-related genes in chickens. The results could be useful in identifying candidate genes that could be used for selective breeding to improve meat quality.
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Affiliation(s)
- Chao Lv
- College of Animal Science, Jilin University, Changchun 130062, P. R. China
| | - Shuling Niu
- College of Animal Science, Jilin University, Changchun 130062, P. R. China.,Department of Animal Science and Technology, Changchun Sci-Tech University, Changchun 130600, P. R. China
| | - Shouqing Yan
- College of Animal Science, Jilin University, Changchun 130062, P. R. China
| | - Chunyan Bai
- College of Animal Science, Jilin University, Changchun 130062, P. R. China
| | - Xi Yu
- College of Animal Science, Jilin University, Changchun 130062, P. R. China
| | - Jiani Hou
- Department of Animal Science and Technology, Changchun Sci-Tech University, Changchun 130600, P. R. China
| | - Wenjing Gao
- College of Animal Science, Jilin University, Changchun 130062, P. R. China
| | - Jinyu Zhang
- College of Animal Science, Jilin University, Changchun 130062, P. R. China
| | - Zhihui Zhao
- College of Animal Science, Jilin University, Changchun 130062, P. R. China
| | - Caini Yang
- College of Animal Science, Jilin University, Changchun 130062, P. R. China
| | - Yonghong Zhang
- College of Animal Science, Jilin University, Changchun 130062, P. R. China
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Lv C, Wang R, Gao J, Ding N, Dong S, Nie J, Xu J, Du B. PAA-b-PPO-b-PAA triblock copolymers with enhanced phase separation and inverse order-to-order phase transition upon increasing temperature. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.121982] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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168
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Hu X, Li P, Zhang X, Yu B, Lv C, Zeng N, Luo J, Zhang Z, Song J, Liu Y. Ni-Based Catalyst Derived from NiAl Layered Double Hydroxide for Vapor Phase Catalytic Exchange between Hydrogen and Water. Nanomaterials (Basel) 2019; 9:nano9121688. [PMID: 31775335 PMCID: PMC6956106 DOI: 10.3390/nano9121688] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 11/20/2019] [Accepted: 11/22/2019] [Indexed: 11/16/2022]
Abstract
A high-efficient and low-cost catalyst on hydrogen isotope separation between hydrogen and water is an essential factor in industrial application for heavy water production and water detritiation. In past studies, Pt-based catalysts were developed but not practical for commercial use due to their high cost for vapor phase catalytic exchange (VPCE), while for impregnated nickel catalysts with a lower cost the problems of agglomeration and low Ni utilization existed. Therefore, to solve these problems, in-situ grown Ni-based catalysts (NiAl-LDO) derived from a layered double hydroxide (LDH) precursor were fabricated and first applied in VPCE in this work. Compared with traditional impregnated Ni-based catalysts, NiAl-LDO catalysts own a unique layered structure, homogeneous dispersed metallic phase, higher specific surface area as well as stronger metal-support interactions to prevent active metal from agglomerating. These advantages are beneficial for exposing more active sites to improve dynamic contacts between H2 and HDO in a catalyst surface and can bring excellent catalytic activity under a reaction temperature of lower than 400 °C. Additionally, we found that the dissociative chemisorption of HDO and H2 occurs not only in Ni (111) but also in NiO species where chemisorbed H(ads), D(ads), OH(ads) and OD(ads) are formed. The results highlight that both of the Ni2+ species and Ni0 species possess catalytic activities for VPCE process.
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Affiliation(s)
- Xiaoyu Hu
- School of Resource Environmental and Safety Engineering, University of South China, Hengyang 421001, China;
- Institute of Materials, China Academy of Engineering Physics, Jiangyou 621908, China; (P.L.); (X.Z.); (B.Y.); (C.L.); (N.Z.); (J.L.); (Z.Z.)
| | - Peilong Li
- Institute of Materials, China Academy of Engineering Physics, Jiangyou 621908, China; (P.L.); (X.Z.); (B.Y.); (C.L.); (N.Z.); (J.L.); (Z.Z.)
| | - Xin Zhang
- Institute of Materials, China Academy of Engineering Physics, Jiangyou 621908, China; (P.L.); (X.Z.); (B.Y.); (C.L.); (N.Z.); (J.L.); (Z.Z.)
| | - Bin Yu
- Institute of Materials, China Academy of Engineering Physics, Jiangyou 621908, China; (P.L.); (X.Z.); (B.Y.); (C.L.); (N.Z.); (J.L.); (Z.Z.)
| | - Chao Lv
- Institute of Materials, China Academy of Engineering Physics, Jiangyou 621908, China; (P.L.); (X.Z.); (B.Y.); (C.L.); (N.Z.); (J.L.); (Z.Z.)
| | - Ning Zeng
- Institute of Materials, China Academy of Engineering Physics, Jiangyou 621908, China; (P.L.); (X.Z.); (B.Y.); (C.L.); (N.Z.); (J.L.); (Z.Z.)
| | - Junhong Luo
- Institute of Materials, China Academy of Engineering Physics, Jiangyou 621908, China; (P.L.); (X.Z.); (B.Y.); (C.L.); (N.Z.); (J.L.); (Z.Z.)
| | - Zhi Zhang
- Institute of Materials, China Academy of Engineering Physics, Jiangyou 621908, China; (P.L.); (X.Z.); (B.Y.); (C.L.); (N.Z.); (J.L.); (Z.Z.)
| | - Jiangfeng Song
- Institute of Materials, China Academy of Engineering Physics, Jiangyou 621908, China; (P.L.); (X.Z.); (B.Y.); (C.L.); (N.Z.); (J.L.); (Z.Z.)
- Correspondence: (J.S.); (Y.L.); Tel.: +86-139-9010-5175 (J.S.); +86-135-0734-1111 (Y.L.)
| | - Yong Liu
- School of Resource Environmental and Safety Engineering, University of South China, Hengyang 421001, China;
- Correspondence: (J.S.); (Y.L.); Tel.: +86-139-9010-5175 (J.S.); +86-135-0734-1111 (Y.L.)
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Ning F, Xin H, Liu J, Lv C, Xu X, Wang M, Wang Y, Zhang W, Zhang X. Structure and function of USP5: Insight into physiological and pathophysiological roles. Pharmacol Res 2019; 157:104557. [PMID: 31756387 DOI: 10.1016/j.phrs.2019.104557] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 11/18/2019] [Accepted: 11/18/2019] [Indexed: 11/16/2022]
Abstract
Deubiquitinase (DUB)-mediated cleavage of ubiquitin chains from substrate proteins plays a crucial role in various cellular processes, such as DNA repair and protein stabilization and localization. DUBs can be classified into five families based on their sequence and structural homology, and the majority belong to the ubiquitin-specific proteinase (USP) family. As one of the USPs, ubiquitin-specific proteinase 5 (USP5) is unique in that it can specifically recognize unanchored (not conjugated to target proteins) polyubiquitin and is essential for maintaining homeostasis of the monoubiquitin pool. USP5 has also been implicated in a wide variety of cellular events. In the present review, we focus on USP5 and provide a comprehensive overview of the current knowledge regarding its structure, physiological roles in multiple cellular events, and pathophysiological roles in relevant diseases, especially cancer. Signaling pathways and emerging pharmacological profiles of USP5 are also introduced, which fully embody the therapeutic potential of USP5 for human diseases ranging from cancer to neurological diseases.
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Affiliation(s)
- Fengling Ning
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Hong Xin
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Junqiu Liu
- Laboratory of Medicinal Plant Biotechnology, College of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, China
| | - Chao Lv
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Xin Xu
- Suzhou Institute of Systems Medicine, Center for Systems Medicine, Chinese Academy of Medical Sciences, Suzhou 215123, China
| | - Mengling Wang
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Yinhang Wang
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Weidong Zhang
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
| | - Xuemei Zhang
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, China.
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170
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Wang T, Yan J, Yuan H, Xu J, Lam HY, Yu X, Lv C, Du B, Tsui OKC. Tg Confinement Effect of Random Copolymers of 4- tert-Butylstyrene and 4-Acetoxystyrene with Different Compositions. ACS Macro Lett 2019; 8:1280-1284. [PMID: 35651168 DOI: 10.1021/acsmacrolett.9b00568] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We observe that the Tg confinement effect of polymer films can saturate with polymer-substrate interaction. Thickness dependences of the glass transition temperature, Tg(h0), of random copolymer films of 4-tert-butylstyrene (TBS) and 4-acetoxystyrene (AS) supported by silica (SiOx) were measured for different TBS concentrations, XTBS. For 0 ≤ XTBS ≤ 0.47, Tg(h0) displays identical enhancements, independent of XTBS. For XTBS > ∼0.66; however, Tg(h0) decreases steadily with XTBS. The XTBS > 0.66 result is in keeping with expectations that TBS interacts less strongly with SiOx than AS does, and weaker polymer-substrate interaction renders greater dominance of the air surface over substrate surface on Tg, and thereby Tg reduction. We propose that saturation in Tg(h0) found for XTBS ≤ 0.47 is caused by the maximization in polymer-substrate-specific bond formation. Further experiments and a calculation support this proposition.
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Affiliation(s)
- Tong Wang
- Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
| | - Jinsong Yan
- Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
| | - Hailin Yuan
- Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
| | - Jianquan Xu
- Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
| | - Ho Yi Lam
- Department of Chemical and Biological Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
| | - Xuanji Yu
- Division of Materials Science and Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Chao Lv
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Binyang Du
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Ophelia K. C. Tsui
- Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
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Li SX, Zhang GP, Xia H, Xu YS, Lv C, Sun HB. Template-confined growth of Ruddlesden-Popper perovskite micro-wire arrays for stable polarized photodetectors. Nanoscale 2019; 11:18272-18281. [PMID: 31570914 DOI: 10.1039/c9nr05396d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The detection of the polarization states of light is of great significance for the analysis of biological tissue morphologies, image display systems and sensors. Although organic-inorganic hybrid perovskite crystals have excellent photoelectric properties, which make them very suitable for the preparation of photodetectors, their applications in polarized light detection are hindered by their isotropy and instability. Here, we solved this problem by fabricating a stable 2D layered Ruddlesden-Popper perovskite into anisotropic micro-wire arrays with a template-confined method. Based on this anisotropic structure, a high-performance photodetector with a dark current as low as 10-12 A, high responsivity of 3.5 A W-1, detectivity exceeding 1 × 1015 Jones and a fast response with a rise time of 4.1 ms and a decay time of 3.3 ms was achieved and successfully applied for high-performance polarization detection. More importantly, the device maintained a superior performance even after being exposed to an environment of 60% relative humidity without encapsulation.
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Affiliation(s)
- Shun-Xin Li
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China.
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172
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Zhou F, Gu C, Wang J, Zhang Y, Wang P, Lv C, Bi D, Zhao L, Zhu Y. Genomic heterogeneity and clonality analysis of multiple synchronous lung cancers (MSLCs). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz258.008] [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: 11/12/2022] Open
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173
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Li Y, Xie X, Zhang H, Lv C, Miao D, Wang F. COX-2 Expression and Mesenchymal-transition Status on Circulating Tumor Cells Predict Worse Survival in Patients with Nasopharyngeal Carcinoma: A Prospective Analysis. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.415] [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: 11/16/2022]
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174
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Zhao J, Lv C, Wu Q, Zeng H, Guo X, Yang J, Tian S, Zhang W. Computational systems pharmacology reveals an antiplatelet and neuroprotective mechanism of Deng-Zhan-Xi-Xin injection in the treatment of ischemic stroke. Pharmacol Res 2019; 147:104365. [DOI: 10.1016/j.phrs.2019.104365] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 07/19/2019] [Accepted: 07/19/2019] [Indexed: 12/26/2022]
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175
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Fan X, Zhu J, Dong W, Sun Y, Lv C, Guo B, Xu R. Comparison of pasting properties measured from the whole grain flour and extracted starch in barley (Hordeum vulgare L.). PLoS One 2019; 14:e0216978. [PMID: 31141562 PMCID: PMC6541268 DOI: 10.1371/journal.pone.0216978] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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: 02/25/2019] [Accepted: 05/02/2019] [Indexed: 11/19/2022] Open
Abstract
Pasting properties of barley starch are important characteristics from a processing standpoint. The isolation of starch form barley grains is time consuming thus the whole grain flour is always used. To compare pasting properties of starch with those of the whole grain flour, we used a Rapid Visco Analyser (RVA) to measure pasting properties of three types of samples: grain flour and starches isolated using two different extraction methods. We also investigated compositional, morphological and structural properties of the two starch samples. Significant differences in pasting properties were found among the three sample types, but most of the parameters of pasting properties displayed significant correlations between flour and starch. No significant differences were found in amylose/amylopectin ratio, granule morphology, granule size distribution and crystal structure between starches extracted using two different methods. However, the starch isolated from water homogenization had a higher protein content and lower total starch, amylose and amylopectin contents than the starch extracted with homogenized extraction under alkaline conditions. We concluded that the whole grain flour can be used to predict the pasting properties in breeding programs.
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Affiliation(s)
- Xiangyun Fan
- Jiangsu Key Laboratory of Crop Genetics and Physiology / Key Laboratory of Plant Functional Genomics of the Ministry of Education / Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Agricultural College of Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, China
- Institute of Food Crops, Jiangsu Academy of Agricultural Sciences / Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing, China
| | - Juan Zhu
- Jiangsu Key Laboratory of Crop Genetics and Physiology / Key Laboratory of Plant Functional Genomics of the Ministry of Education / Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Agricultural College of Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, China
| | - Wenbin Dong
- Jiangsu Key Laboratory of Crop Genetics and Physiology / Key Laboratory of Plant Functional Genomics of the Ministry of Education / Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Agricultural College of Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, China
| | - Yuandong Sun
- Jiangsu Key Laboratory of Crop Genetics and Physiology / Key Laboratory of Plant Functional Genomics of the Ministry of Education / Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Agricultural College of Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, China
| | - Chao Lv
- Jiangsu Key Laboratory of Crop Genetics and Physiology / Key Laboratory of Plant Functional Genomics of the Ministry of Education / Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Agricultural College of Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, China
| | - Baojian Guo
- Jiangsu Key Laboratory of Crop Genetics and Physiology / Key Laboratory of Plant Functional Genomics of the Ministry of Education / Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Agricultural College of Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, China
| | - Rugen Xu
- Jiangsu Key Laboratory of Crop Genetics and Physiology / Key Laboratory of Plant Functional Genomics of the Ministry of Education / Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Agricultural College of Yangzhou University, Yangzhou, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, China
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176
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Li SX, Xia H, Xu YS, Lv C, Wang G, Dai YZ, Sun HB. Gold nanoparticle densely packed micro/nanowire-based pressure sensors for human motion monitoring and physiological signal detection. Nanoscale 2019; 11:4925-4932. [PMID: 30834925 DOI: 10.1039/c9nr00595a] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Flexible pressure sensors have gained ever-increasing attention because of their widespread applications in wearable devices. The sensor fabrication technologies reported so far are generally complicated, limiting their industrial applications. It is therefore of great importance to develop a simple method to fabricate high-performance flexible pressure sensors. Herein, we report an approach of assembling gold nanoparticles into strictly aligned and densely stacked micro/nanowires by imprinting for flexible pressure sensors with high performance. By our method, the whole assembly process takes only 1 min. The pressure sensor exhibits a best detection limit as low as 25 Pa. The sensors could be attached to any part of the human body and are so sensitive that even pulses in different regions of the body and the differences between a pregnant woman and a nonpregnant woman could be distinguished.
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Affiliation(s)
- Shun-Xin Li
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China.
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177
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Lv C, Hu C, Luo J, Liu S, Qiao Y, Zhang Z, Song J, Shi Y, Cai J, Watanabe A. Recent Advances in Graphene-Based Humidity Sensors. Nanomaterials (Basel) 2019; 9:E422. [PMID: 30871077 PMCID: PMC6474033 DOI: 10.3390/nano9030422] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 03/01/2019] [Accepted: 03/03/2019] [Indexed: 12/11/2022]
Abstract
Humidity sensors are a common, but important type of sensors in our daily life and industrial processing. Graphene and graphene-based materials have shown great potential for detecting humidity due to their ultrahigh specific surface areas, extremely high electron mobility at room temperature, and low electrical noise due to the quality of its crystal lattice and its very high electrical conductivity. However, there are still no specific reviews on the progresses of graphene-based humidity sensors. This review focuses on the recent advances in graphene-based humidity sensors, starting from an introduction on the preparation and properties of graphene materials and the sensing mechanisms of seven types of commonly studied graphene-based humidity sensors, and mainly summarizes the recent advances in the preparation and performance of humidity sensors based on pristine graphene, graphene oxide, reduced graphene oxide, graphene quantum dots, and a wide variety of graphene based composite materials, including chemical modification, polymer, metal, metal oxide, and other 2D materials. The remaining challenges along with future trends in high-performance graphene-based humidity sensors are also discussed.
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Affiliation(s)
- Chao Lv
- Institute of Materials, China Academy of Engineering Physics, Jiangyou 621908, China.
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan.
| | - Cun Hu
- Institute of Materials, China Academy of Engineering Physics, Jiangyou 621908, China.
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China.
| | - Junhong Luo
- Institute of Materials, China Academy of Engineering Physics, Jiangyou 621908, China.
| | - Shuai Liu
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China.
| | - Yan Qiao
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China.
| | - Zhi Zhang
- Institute of Materials, China Academy of Engineering Physics, Jiangyou 621908, China.
| | - Jiangfeng Song
- Institute of Materials, China Academy of Engineering Physics, Jiangyou 621908, China.
| | - Yan Shi
- Institute of Materials, China Academy of Engineering Physics, Jiangyou 621908, China.
| | - Jinguang Cai
- Institute of Materials, China Academy of Engineering Physics, Jiangyou 621908, China.
| | - Akira Watanabe
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan.
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178
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Wu Z, Wang Y, Liu X, Lv C, Li Y, Wei D, Liu Z. Carbon-Nanomaterial-Based Flexible Batteries for Wearable Electronics. Adv Mater 2019; 31:e1800716. [PMID: 30680813 DOI: 10.1002/adma.201800716] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [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: 02/01/2018] [Revised: 12/03/2018] [Indexed: 05/18/2023]
Abstract
Wearable electronics have received considerable attention in recent years. These devices have penetrated every aspect of our daily lives and stimulated interest in futuristic electronics. Thus, flexible batteries that can be bent or folded are desperately needed, and their electrochemical functions should be maintained stably under the deformation states, given the increasing demands for wearable electronics. Carbon nanomaterials, such as carbon nanotubes, graphene, and/or their composites, as flexible materials exhibit excellent properties that make them suitable for use in flexible batteries. Herein, the most recent progress on flexible batteries using carbon nanomaterials is discussed from the viewpoint of materials fabrication, structure design, and property optimization. Based on the current progress, the existing advantages, challenges, and prospects are outlined and highlighted.
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Affiliation(s)
- Ziping Wu
- School of Materials Science and Engineering, Jiangxi University of Science and Technology, 86 Hong Qi Road, Ganzhou, 341000, P. R. China
- Center for Nanochemistry, Beijing Science and Engineering Center for Nanocarbons, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China
| | - Yonglong Wang
- School of Materials Science and Engineering, Jiangxi University of Science and Technology, 86 Hong Qi Road, Ganzhou, 341000, P. R. China
| | - Xianbin Liu
- School of Materials Science and Engineering, Jiangxi University of Science and Technology, 86 Hong Qi Road, Ganzhou, 341000, P. R. China
| | - Chao Lv
- School of Materials Science and Engineering, Jiangxi University of Science and Technology, 86 Hong Qi Road, Ganzhou, 341000, P. R. China
| | - Yesheng Li
- School of Materials Science and Engineering, Jiangxi University of Science and Technology, 86 Hong Qi Road, Ganzhou, 341000, P. R. China
| | - Di Wei
- Beijing Graphene Institute, Beijing, 100094, P. R. China
| | - Zhongfan Liu
- Center for Nanochemistry, Beijing Science and Engineering Center for Nanocarbons, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China
- Beijing Graphene Institute, Beijing, 100094, P. R. China
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179
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Ma Y, Lv C, Hou J, Yuan S, Wang Y, Xu P, Gao G, Shi J. 3D Hollow Hierarchical Structures Based on 1D BiOCl Nanorods Intersected with 2D Bi₂WO₆ Nanosheets for Efficient Photocatalysis Under Visible Light. Nanomaterials (Basel) 2019; 9:nano9030322. [PMID: 30823644 PMCID: PMC6473858 DOI: 10.3390/nano9030322] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 02/21/2019] [Accepted: 02/22/2019] [Indexed: 12/16/2022]
Abstract
Constructing elaborate catalysts to prompt the charge carrier separation and transport is critical to developing efficient photocatalytic systems. Here, a hierarchical hollow structure based on 1D/2D BiOCl/Bi2WO6 hybrid materials was fabricated by a precursor chemical engineering method. This hybrid is made up of molten 1D BiOCl nanorods and 2D Bi2WO6 nanosheets. The synergetic effect of the presence of BiOCl and specific interfaces between BiOCl and Bi2WO6 provided efficient interfacial charge transfer of photogenerated carriers under visible light. Seamless BiOCl functions like a noble metal, with platinum-like behavior, accelerating the oxidizing ability of fabricated BiOCl/Bi2WO6 hybrids, which was favorable for the photocatalytic decomposition of organic compounds (3.2 times greater for Rhodamine B (RhB) and 4 times greater for Ciprofloxacin (CIP)) over the Bi2WO6 catalysts. The beneficial interfacial interaction between BiOCl and Bi2WO6 resulting from the unique construction prompted the charge transfer from the conduction band of Bi2WO6 to that of BiOCl. The findings presented in this study provide a cost-effective precursor-mediated strategy to realize the critical and efficient separation of photoinduced carriers in environmental remediation applications.
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Affiliation(s)
- Yongchao Ma
- Department of Chemistry and Pharmaceutical Science, Qingdao Agricultural University, Qingdao 266109, China.
| | - Chao Lv
- Department of Chemistry and Pharmaceutical Science, Qingdao Agricultural University, Qingdao 266109, China.
| | - Jiahui Hou
- Department of Chemistry and Pharmaceutical Science, Qingdao Agricultural University, Qingdao 266109, China.
| | - Shaoteng Yuan
- Department of Chemistry and Pharmaceutical Science, Qingdao Agricultural University, Qingdao 266109, China.
| | - Yanru Wang
- Department of Chemistry and Pharmaceutical Science, Qingdao Agricultural University, Qingdao 266109, China.
| | - Ping Xu
- Department of Chemistry and Pharmaceutical Science, Qingdao Agricultural University, Qingdao 266109, China.
| | - Ge Gao
- Department of Chemistry and Pharmaceutical Science, Qingdao Agricultural University, Qingdao 266109, China.
| | - Jinsheng Shi
- Department of Chemistry and Pharmaceutical Science, Qingdao Agricultural University, Qingdao 266109, China.
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180
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Bai L, Song X, Fu Y, Chen S, Tian Y, Jia R, Zou Y, Li L, Liang X, He C, Yin L, Ye G, Lv C, Yue G, Yin Z. Effects of a mixed extract of Cortex Fraxini, Pulsatilla chinensis, and Eucommia ulmoides on immunity and antioxidant activity in hemp ducks. Livest Sci 2019. [DOI: 10.1016/j.livsci.2019.01.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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181
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Man MQ, Ye L, Hu L, Jeong S, Elias PM, Lv C. Improvements in epidermal function prevent relapse of psoriasis: a self-controlled study. Clin Exp Dermatol 2019; 44:654-657. [PMID: 30609089 DOI: 10.1111/ced.13888] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/21/2018] [Indexed: 11/26/2022]
Abstract
While therapeutic approaches for psoriasis are widely available, preventive regimens are lacking. We aimed to determine whether improvements in epidermal function could prevent psoriasis relapse. Two self-controlled cohort studies were designed, enrolling two cohorts of patients with psoriasis (n = 30 and n = 60) to be treated topically with an in-house-prepared emollient or ATOPALM® cream applied twice daily to one forearm for 20 and 30 days, respectively, while the same sites on the contralateral arm served as the untreated control. Epidermal function on both arms was assessed prior to and at the end of the trials. Delayed relapse on the treated arm was seen in 54.5% and 71% of patients in the first and second cohort, respectively. The time of psoriatic relapse correlated with the extent of abnormalities in baseline epidermal function. These results suggest that improvements in epidermal function with topical emollients can prevent/attenuate the development of psoriasis.
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Affiliation(s)
- M-Q Man
- Dermatology Hospital, Southern Medical University, Guangdong, China.,Dermatology Services, Veterans Affair Medical Center and University of California, San Francisco, CA, USA
| | - L Ye
- Dermatology Hospital, Southern Medical University, Guangdong, China
| | - L Hu
- Department of Immunology, Key laboratory of Immune Microenvironment and Disease, Tianjin Medical University, Tianjin, China
| | - S Jeong
- Department of Bio-Cosmetic Science, Seowon University, Cheongju, South Korea
| | - P M Elias
- Dermatology Services, Veterans Affair Medical Center and University of California, San Francisco, CA, USA
| | - C Lv
- Dalian Skin Disease Hospital, Dalian, China
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182
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Shi G, Lv C, Yang Z, Qin T, Sun L, Pan P, Wang D. TRIM31 promotes proliferation, invasion and migration of glioma cells through Akt signaling pathway. Neoplasma 2019; 66:727-735. [DOI: 10.4149/neo_2019_190106n21] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Accepted: 03/20/2019] [Indexed: 11/08/2022]
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183
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Lv C, Lan X, Wang L, Yu Q, Zhang M, Sun H, Shi J. Alkaline-earth-metal-doped TiO2 for enhanced photodegradation and H2 evolution: insights into the mechanisms. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01687b] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The doping strategy of TiO2 with an AM (alkali earth metal) for photocatalysis applications has been reported in several literature reports.
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Affiliation(s)
- Chao Lv
- Qingdao Agricultural University
- Department of Chemistry and Pharmaceutical Science
- Qingdao
- China
| | - Xuefang Lan
- Qingdao Agricultural University
- Department of Chemistry and Pharmaceutical Science
- Qingdao
- China
| | - Lili Wang
- Qingdao Agricultural University
- Department of Chemistry and Pharmaceutical Science
- Qingdao
- China
| | - Qi Yu
- Qingdao Agricultural University
- Department of Chemistry and Pharmaceutical Science
- Qingdao
- China
| | - Minghui Zhang
- Qingdao Agricultural University
- Department of Chemistry and Pharmaceutical Science
- Qingdao
- China
| | - Hualong Sun
- Qingdao Agricultural University
- Department of Chemistry and Pharmaceutical Science
- Qingdao
- China
| | - Jinsheng Shi
- Qingdao Agricultural University
- Department of Chemistry and Pharmaceutical Science
- Qingdao
- China
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184
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Lv C, Zhang Z, Gao J, Xue J, Li J, Nie J, Xu J, Du B. Self-Assembly of Thermosensitive Amphiphilic Pentablock Terpolymer PNIPAMx-b-PtBA90-b-PPO36-b-PtBA90-b-PNIPAMx in Dilute Aqueous Solution. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01933] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [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)
- Chao Lv
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science & Engineering, Zhejiang University, Hangzhou 310027, China
| | - Zhijun Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science & Engineering, Zhejiang University, Hangzhou 310027, China
| | - Jia Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science & Engineering, Zhejiang University, Hangzhou 310027, China
| | - Jinqiao Xue
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science & Engineering, Zhejiang University, Hangzhou 310027, China
| | - Jianyuan Li
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science & Engineering, Zhejiang University, Hangzhou 310027, China
| | - Jingjing Nie
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Junting Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science & Engineering, Zhejiang University, Hangzhou 310027, China
| | - Binyang Du
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science & Engineering, Zhejiang University, Hangzhou 310027, China
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185
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Wang J, Wu N, Lv C, Yan S, Yang Y. Should patients with stage IB non-small cell lung cancer receive adjuvant chemotherapy? A comparison of survival between the 8th and 7th editions of the AJCC TNM staging system for stage IB patients. J Cancer Res Clin Oncol 2018; 145:463-469. [PMID: 30474757 DOI: 10.1007/s00432-018-2801-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [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: 02/22/2018] [Accepted: 11/19/2018] [Indexed: 12/25/2022]
Abstract
INTRODUCTION The aims of this study were to compare the efficacy of platinum-based adjuvant chemotherapy in resected patients with stage IB NSCLC according to the 7th and 8th editions of the American Joint Committee on Cancer (AJCC) staging manuals on tumor, node, and metastasis (TNM) staging systems, respectively. METHODS This retrospective analysis included 569 patients who underwent pulmonary resection for primary non-small cell lung cancer. 5-year overall survival (OS) was compared in stage IB disease using the 8th and 7th editions of the TNM classification, respectively. Survival curves were plotted using the Kaplan-Meier method, and log-rank test was used to evaluate differences between subgroups. RESULTS The 5-year overall survival was 76.9% and 83.5% (p = 0.044) for patients in the observation and adjuvant groups, respectively. The presence of adjuvant chemotherapy, lymphovascular invasion, TNM stage, and performance status (PS) were risk factors for OS in univariate analysis. In multivariate analysis, TNM stage [hazard ratio (HR) 5.403, 95% confidence interval (CI) 3.743-7.801, p < 0.001], PS (HR 4.375, 95% CI 2.856-6.703, p < 0.001) and adjuvant chemotherapy (HR 1.476, 95% CI 1.028-2.119, p = 0.035) were risk factors for OS. Subgroup analysis showed that for patients with 8th edition stage IB NSCLC, 5-year OS was 87.6% in the observation group (n = 265) and 82.4% in the adjuvant group (p = 0.021). For patients with 8th edition stage IIA NSCLC, 5-year OS was 48.1% and 87.7% in the observation group and the adjuvant group (p < 0.001), respectively. For patients with an Eastern Cooperative Oncology Group (ECOG) performance status (PS) score of 0, a better 5-year OS was seen in the adjuvant group (79.3% vs 91.6%, p = 0.001) By contrast, for patients with a PS score of ECOG 1, the 5-year OS was significantly improved in the observation group (58.6% vs 17.2%, p = 0.021). CONCLUSION The 8th edition of the AJCC staging identified the beneficiary population of platinum-based adjuvant chemotherapy in early-stage NSCLC. Moreover, patients with good PS (ECOG 0) benefited from adjuvant chemotherapy. A large prospective randomized clinical trial is needed to determine the real role of adjuvant chemotherapy in this setting.
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Affiliation(s)
- Jia Wang
- Key laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Thoracic Surgery II, Peking University Cancer Hospital and Institute, Peking University School of Oncology, No. 52, Fucheng Avenue, Haidian District, Beijing, 100142, People's Republic of China
| | - Nan Wu
- Key laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Thoracic Surgery II, Peking University Cancer Hospital and Institute, Peking University School of Oncology, No. 52, Fucheng Avenue, Haidian District, Beijing, 100142, People's Republic of China
| | - Chao Lv
- Key laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Thoracic Surgery II, Peking University Cancer Hospital and Institute, Peking University School of Oncology, No. 52, Fucheng Avenue, Haidian District, Beijing, 100142, People's Republic of China
| | - Shi Yan
- Key laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Thoracic Surgery II, Peking University Cancer Hospital and Institute, Peking University School of Oncology, No. 52, Fucheng Avenue, Haidian District, Beijing, 100142, People's Republic of China
| | - Yue Yang
- Key laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Thoracic Surgery II, Peking University Cancer Hospital and Institute, Peking University School of Oncology, No. 52, Fucheng Avenue, Haidian District, Beijing, 100142, People's Republic of China.
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Zhang P, Li S, Lv C, Si J, Xiong Y, Ding L, Ma Y, Yang Y. BPI-9016M, a c-Met inhibitor, suppresses tumor cell growth, migration and invasion of lung adenocarcinoma via miR203-DKK1. Am J Cancer Res 2018; 8:5890-5902. [PMID: 30613269 PMCID: PMC6299440 DOI: 10.7150/thno.27667] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 10/17/2018] [Indexed: 12/23/2022] Open
Abstract
Activation of c-Met plays a critical role in tumorigenesis, migration and invasion in lung cancer. Here, we explored the therapeutic efficacy of a novel small-molecule c-Met inhibitor (BPI-9016M) in lung adenocarcinoma and investigated the underlying molecular mechanisms. Method: BPI-9016M, a c-Met tyrosine kinase receptor inhibitor, was used to treat patient-derived xenografts (PDX) from lung adenocarcinoma in NOD/SCID mice. Immunohistochemistry and Western blot analysis were used to determine the expression of c-Met and its downstream signaling molecules. CCK8, wound healing, and trans-well assays were used to analyze cell proliferation, spreading, migration and invasion. RNA sequencing and quantitative real-time PCR (qPCR) was used to screen and validate the expression of downstream genes in lung adenocarcinoma cells treated with BPI-9016M. Luciferase reporter assay was used to detect the interaction between miRNA and the targeted gene. Results: BPI-9016M significantly suppressed growth in three out of four lung adenocarcinoma PDX models, particularly in the tumors with high expression of c-Met. In lung adenocarcinoma cell lines, BPI-9016M treatment resulted in increased miR203, which reduced migration and invasion and also repressed Dickkopf-related protein 1 (DKK1) expression. Forced overexpression of DKK1 or down-regulation of miR203 reversed the inhibitory effect of BPI-9016M on migration and invasion. C-Met was verified to positively and negatively associate with DKK1 and miR203, respectively. High expression of c-Met/DKK1 or low expression of miR203 related to poor outcome of lung adenocarcinoma patients. Furthermore, we observed significantly enhanced tumor cell growth inhibition upon combining BPI-9016M treatment with miR203 mimics or DKK1 siRNA. Conclusion: Our data indicated that BPI-9016M is an effective agent against lung adenocarcinoma, particularly in tumors with c-Met activation, and likely functions through upregulation of miR203 leading to reduced DKK1 expression.
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187
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Li M, Li Y, Sun L, Song JL, Lv C. [High mobility group box 1 promotes apoptosis of astrocytes after oxygen glucose deprivation/reoxygenation by regulating the expression of Bcl-2 and Bax]. Beijing Da Xue Xue Bao Yi Xue Ban 2018; 50:785-791. [PMID: 30337736] [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: 06/08/2023]
Abstract
OBJECTIVE To investigate the effect of high mobility group protein box 1 (HMGB1) on apoptosis of astrocytes after oxygen glucose deprivation/reoxygenation (OGD/R), and to investigate the possible mechanism by evaluating the expression of apoptosis related protein Bcl-2 and Bax. METHODS The cerebral cortex astrocytes of neonatal rats were divided into normal group, model group, interference group and control group. Lentivirus vector of rat HMGB1 short hairpin RNA (shRNA) was used to suppress the HMGB1 protein expression in the astrocytes. Then the detection was made after astrocytes were deprived of oxygen and glucose 6 h, reoxygenation for 24 h. The effect of RNA interference was evaluated by Western blotting. The cell survival rate was measured by MTT assay. The apoptosis of astrocytes was determined by TUNEL assay. The expressions of Bcl-2 and Bax were detected by Western blotting. RESULTS Compared with the normal group, the protein expression of HMGB1 was significantly increased in model group after OGD/R (P<0.001), the astrocytes survival rate was decreased (P<0.001), the number of apoptotic cells labeled with TUNEL was increased (P<0.001), and the ratio of Bcl-2/Bax was decreased (P<0.001). Compared with the model group, RNA interference effectively inhibited the expression of HMGB1 in interference group (P<0.001), the astrocytes survival rate was increased (P<0.001), the number of apoptotic cells labeled with TUNEL was reduced (P<0.01), and the ratio of Bcl-2/Bax was increased (P<0.001). CONCLUSION The apoptosis of astrocytes can be induced by HMGB1 after OGD/R, and the mechanism may be related to regulating the expression of apoptosis related proteins Bcl-2 and Bax.
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Affiliation(s)
- M Li
- Department of Neurology, The Second Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - Y Li
- Basic Medical College of Shanxi Medical University, Taiyuan 030001, China
| | - L Sun
- Department of Orthopedics, Shanxi Academy of Medical Sciences Shanxi Dayi Hospital, Taiyuan 030032, China
| | - J L Song
- Department of Orthopedics, Shanxi Academy of Medical Sciences Shanxi Dayi Hospital, Taiyuan 030032, China
| | - C Lv
- Department of Orthopedics, Shanxi Academy of Medical Sciences Shanxi Dayi Hospital, Taiyuan 030032, China
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Wang X, Nan W, Yan S, Li X, Lv C, Li S, Wang Y, Wang J, Yang Y. P3.16-36 Adjuvant Chemotherapy May Improve the Outcome of Patients with Non-Small-Cell Lung Cancer with Metastasis of Intrapulmonary Lymph Nodes. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1943] [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: 10/28/2022]
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189
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Yan S, Wang Y, Wang X, Li S, Lv C, Wang Y, Wang J, Yang Y, Nan W. P1.16-61 Intermittent Chest Tube Clamping Shortens Chest Tube Duration After Lung Cancer Surgery: An Interim Analysis of Randomized Clinical Trial. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1030] [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: 10/28/2022]
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190
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Wang J, Nan W, Lv C, Yan S, Yang Y. P2.16-45 Should Patients with Stage IB Non-Small Cell Lung Cancer Receive Adjuvant Chemotherapy? J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1520] [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: 10/28/2022]
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191
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Wu Q, Lv C, Zhang Z, Li Y, Nie J, Xu J, Du B. Poly( N-isopropylacrylamide- co-1-vinyl-3-alkylimidazolium bromide) Microgels with Internal Nanophase-Separated Structures. Langmuir 2018; 34:9203-9214. [PMID: 29999323 DOI: 10.1021/acs.langmuir.8b01575] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Microgels with internal nanophase-separated structures were fabricated by surfactant-free emulsion copolymerization of N-isopropylacrylamide (NIPAm) and ionic liquid comonomers, namely, 1-vinyl-3-alkylimidazolium bromide (VIM nBr) with various lengths n of long alkyl side chain, in an aqueous solution at 70 °C using N, N'-methylenebisacrylamide as the cross-linker. Combined techniques of transmission electron microscopy, dynamic and static light-scattering, differential scanning calorimetry (DSC), wide-angle X-ray diffraction (WAXD), small-angle X-ray scattering (SAXS), and polarized optical microscopy were employed to systematically investigate the sizes, morphologies, and properties of the obtained microgels as well as the microstructures and phase transition of nanophases inside the microgels. The obtained P(NIPAm/VIM nBr) microgels are spherical with narrow size distributions, and the nanophases have a radius of about 8-12 nm and are randomly distributed inside the microgels. The cooperative competition of the hydrophilic quaternary vinylimidazole moieties and hydrophobic long alkyl side chains determines the thermal sensitive behavior of the P(NIPAm/VIM nBr) microgels. DSC and WAXD results reveal that the nanophases consist of the ordered alkyl side chains with a layered crystalline structure at low temperature, which exhibit a low melting temperature and a broad melting transition. SAXS results further show that the nanophases form a layered liquid crystalline structure at high temperature for the microgel suspensions and freeze-dried microgels.
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Cai J, Lv C, Aoyagi E, Ogawa S, Watanabe A. Laser Direct Writing of a High-Performance All-Graphene Humidity Sensor Working in a Novel Sensing Mode for Portable Electronics. ACS Appl Mater Interfaces 2018; 10:23987-23996. [PMID: 29931979 DOI: 10.1021/acsami.8b07373] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
This paper reports a fast and highly sensitive all-graphene humidity sensor working in a novel alternating current (ac) detection mode for the first time, which is capable of sensing humidity on a smartphone for portable electronics. The humidity sensor is based on an interdigitated reduced graphene oxide/graphene oxide/rGO (rGO/GO/rGO) structure patterned by a facile laser direct writing method. It works in an ac sensing mode with a rectangular input voltage wave and measures the output voltage wave instead of conventional resistance, impedance, or capacitance, exhibiting a dramatically enhanced sensitivity by about 45 times compared to the low and unstable response in dc mode. The humidity sensor shows an obvious response to the relative humidity (RH) ranging from RH 6.3% to RH 100%. The response and recovery toward humidity change are almost instantaneous, and the corresponding costed times including humidity rise and decay times are less than 1.9 and 3.9 s, respectively, which are among the best results in the literature. The sensor also exhibits outstanding cycling stability, flexibility, and long-term stability (>1 year), as well as good reproducibility of device preparation. Besides, it can be easily connected to an iPhone and the humidity sensing can be conducted with an oscilloscope application on iOS. What's more, an electronic circuit simulation method was employed to fit the output waves, which can not only explain the sensing mechanism, but also determine the resistance and capacitance of the rGO/GO/rGO structure, agreeing well with the results obtained from the electrochemical measurements. It can be reasonably expected that the approach combining humidity sensing and electronic circuit simulation can be applied in real-time monitoring on a smartphone based on the Internet of things and big data technologies.
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Affiliation(s)
- Jinguang Cai
- Institute of Materials , China Academy of Engineering Physics , Jiangyou 621908 , Sichuan , P. R. China
| | - Chao Lv
- Institute of Materials , China Academy of Engineering Physics , Jiangyou 621908 , Sichuan , P. R. China
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Lv C, Fu Z, Lu K, Yue R, Wang T, Cao X, Zhu C, Li H, Hong Y, Lin J. A perspective for improving the sensitivity of detection: The application of multi-epitope recombinant antigen in serological analysis of buffalo schistosomiasis. Acta Trop 2018; 183:14-18. [PMID: 29605156 DOI: 10.1016/j.actatropica.2018.03.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 03/08/2018] [Accepted: 03/28/2018] [Indexed: 12/25/2022]
Abstract
The sensitivity and specificity are two crucial aspects of addressing the efficacy of diagnostic antigens. Achilles' heel of low sensitivity rate exists in current diagnostic recombinant antigens for schistosomiasis detection. This study focused on the diagnosis of water buffalo schistosomiasis japonica and a perspective of improving recombinant antigens' sensitivity was assessed using archived 220 water buffalo sera (114 positive sera, 92 negative sera and 14 Paramphistomum-infected sera) and the method of enzyme-linked immunosorbent assay (ELISA). The subjects included two trivalent recombinant proteins, one bivalent antigen and two single-molecular antigens. The crude antigen SEA (soluble egg antigen) was employed as reference antigen. The highest sensitivity rate in the five recombinant antigens assigned to the trivalent multi-epitope antigen PA4 (95.61%, 109/114), no significant difference with SEA (100%, 114/114, p = .836), and showing remarkable differences with the two single-molecular antigens (p < 0.01). In term of specificity, two trivalent multi-epitope antigens PA4 (97.83%, 90/92), PA5 (100%, 92/92) and the bivalent antigen PA3 (98.91%, 91/92) had few differences with one monovalent antigens PA1 (97.83%, 90/92, p = .304/0.103/0.640), significant differences with another monovalent antigens PA2 (92.39%, 85/92, p < 0.01) and SEA (82.61%, 76/92, p < 0.01). Additional, all the recombinant antigens had low cross-reactivity (7.14%, 1/14, 0% for PA5) with serum samples of paramphistomiasis, contrast with that of SEA (50%, 7/14, p < 0.01). The results indicated that multi-epitope antigens have the possibility to improve diagnostic sensitivity and the trivalent multi-epitope antigen PA4 possesses greater likelihood to be a diagnostic antigen for water buffalo schistosomiasis.
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194
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Luan H, Shen H, Pan Y, Guo B, Lv C, Xu R. Elucidating the hypoxic stress response in barley (Hordeum vulgare L.) during waterlogging: A proteomics approach. Sci Rep 2018; 8:9655. [PMID: 29941955 PMCID: PMC6018542 DOI: 10.1038/s41598-018-27726-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 06/08/2018] [Indexed: 12/25/2022] Open
Abstract
Waterlogging is one of the major abiotic stresses that affects barley production and yield quality. Proteomics techniques have been widely utilized to explore the mechanisms involved in the responses to abiotic stress. In this study, two barley genotypes with contrasting responses to waterlogging stress were analyzed with proteomic technology. The waterlogging treatment caused a greater reduction in biomass and photosynthetic performance in the waterlogging-sensitive genotype TF57 than that in the waterlogging-tolerant genotype TF58. Under waterlogging stress, 30, 30, 20 and 20 differentially expressed proteins were identified through tandem mass spectrometry analysis in the leaves, adventitious roots, nodal roots and seminal roots, respectively. Among these proteins, photosynthesis-, metabolism- and energy-related proteins were differentially expressed in the leaves, with oxygen-evolving enhancer protein 1, ATP synthase subunit and heat shock protein 70 being up-regulated in TF58. Pyruvate decarboxylase (PDC), 1-amino cyclopropane 1-carboxylic acid oxidase (ACO), glutamine synthetase (GS), glutathione S-transferases (GST) and beta-1, 3-glucanase in adventitious, nodal and seminal roots were more abundant in TF58 than those in TF57 under waterlogging stress. Ten representative genes were selected for validation by qRT-PCR in different genotypes with known waterlogging tolerance, and the expression levels of three candidate genes (PDC, ACO and GST) increased in the roots of all genotypes in response to the waterlogging stress. These three genes might play a significant role in the adaptation process of barley under waterlogging stress. The current results partially determined the mechanisms of waterlogging tolerance and provided valuable information for the breeding of barley with enhanced tolerance to waterlogging.
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Affiliation(s)
- Haiye Luan
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Barley Research Institution of Yangzhou University, Yangzhou University, Yangzhou, 225009, China
- Institute of Agricultural Science in Jiangsu Coastal Areas, Yancheng, 224002, China
| | - Huiquan Shen
- Institute of Agricultural Science in Jiangsu Coastal Areas, Yancheng, 224002, China
| | - Yuhan Pan
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Barley Research Institution of Yangzhou University, Yangzhou University, Yangzhou, 225009, China
| | - Baojian Guo
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Barley Research Institution of Yangzhou University, Yangzhou University, Yangzhou, 225009, China
| | - Chao Lv
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Barley Research Institution of Yangzhou University, Yangzhou University, Yangzhou, 225009, China
| | - Rugen Xu
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Barley Research Institution of Yangzhou University, Yangzhou University, Yangzhou, 225009, China.
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195
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Abstract
Sirt1 promotes odontoblastic gene expression in human dental pulp cells, whereas the inhibition of Sirt1 downregulates the expression of those genes. To investigate whether the overexpression of Sirt1 in mesenchymal stem cells (MSCs) driven by Prx1 promoter could rescue the dentin formation defects in Bmi1-deficient (Bmi1-/-) mice, we established the MSCs overexpressing Sirt1 in Bmi1 knockout mice (Sirt1TGBmi1-/-). First, we used Prx1-Cre/ROSAnTnG mice to demonstrate that Prx1 linage cells exist mainly in the pulp horns at 4 wk of age. Second, we found that 4-wk-old Sirt1TG mice had increased tooth volume as compared with wild-type (WT) littermates. The expression level of Sirt1 was significantly higher in dental papilla mesenchymal cells of Sirt1TG mice than WT mice. Furthermore, we demonstrated that the tooth mineralization, dental volume, dentin sialoprotein-immunopositive areas, odontoblastic gene expression, and percentage of proliferating BrdU-positive cells were significantly elevated in the Sirt1TG mice and dramatically reduced in the Bmi1-/- mice versus the WT littermates at 4 wk of age. However, the areas of predentin and the percentage of TUNEL-positive apoptotic cells were significantly reduced in the Sirt1TG mice but dramatically increased in the Bmi1-/- mice as compared with the WT littermates. All these parameters were rescued in the Sirt1TGBmi1-/- mice versus the Bmi1-/- mice. Finally, by using dental papilla mesenchymal cells, we found that the overexpression of Sirt1 rescued the reduced cell proliferation and differentiation and increased the cell apoptosis caused by Bmi1 deficiency, which was associated with increased p53 deacetylation. Therefore, this study indicates that Sirt1 is a potential therapeutic target for promoting dentin formation in an anabolic approach to the treatment of dental developmental defects.
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Affiliation(s)
- H Wang
- 1 Jiangsu Key Laboratory of Oral Diseases and Department of Basic Science of Stomatology, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
| | - C Lv
- 1 Jiangsu Key Laboratory of Oral Diseases and Department of Basic Science of Stomatology, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China.,2 Department of Stomatology, Taizhou People's Hospital of Jiangsu Province, Taizhou, China
| | - Y Gu
- 1 Jiangsu Key Laboratory of Oral Diseases and Department of Basic Science of Stomatology, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
| | - Q Li
- 1 Jiangsu Key Laboratory of Oral Diseases and Department of Basic Science of Stomatology, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
| | - L Xie
- 1 Jiangsu Key Laboratory of Oral Diseases and Department of Basic Science of Stomatology, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
| | - H Zhang
- 3 Center for Musculoskeletal Research, Department of Pathology and Laboratory Medicine, University of Rochester Medical Center, Rochester, NY, USA
| | - D Miao
- 1 Jiangsu Key Laboratory of Oral Diseases and Department of Basic Science of Stomatology, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
| | - W Sun
- 1 Jiangsu Key Laboratory of Oral Diseases and Department of Basic Science of Stomatology, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
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196
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Ye L, Wang Z, Li Z, Lv C, Man MQ. Validation of GPSkin Barrier ® for assessing epidermal permeability barrier function and stratum corneum hydration in humans. Skin Res Technol 2018; 25:25-29. [PMID: 29863296 DOI: 10.1111/srt.12590] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/28/2018] [Indexed: 11/30/2022]
Abstract
BACKGROUND Measurements of transepidermal water loss (TEWL) and stratum corneum (SC) hydration are important for assessing epidermal functions. However, the availability of reliable and user-friendly devices, which can simultaneously measure both TEWL and SC hydration and can allow health providers to remotely access data in time, is limited. MATERIALS AND METHODS GPSkin Barrier® was compared with MPA5 system in the measurements of TEWL and SC hydration on the cheek, the dorsal hand, and the forearm in 200 normal volunteers, including 126 females and 74 males, aged 1-78 years with an average age of 45.24 ± 1.04 years. Correlation of data measured with MPA5 system and GPSkin Barrier® was determined. RESULTS Levels of both TEWL and SC hydration measured with the Barrie GPSkin Barrier® were lower than that with MPA5 system on all 3 body sites except for hydration on the cheek. The levels of both TEWL and SC hydration measured with GpSkin Barrier® were correlated well with that measured with MPA5 system on all 3 body sites CONCLUSIONS: GPSkin Barrier® is a reliable, affordable, and versatile device for assessing epidermal permeability barrier function and SC hydration.
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Affiliation(s)
- L Ye
- Dalian Skin Disease Hospital, Dalian, Liaoning, China
| | - Z Wang
- Department of Dermatology, The 7th People's Hospital of Shenyang City, Shenyang, Liaoning, China
| | - Z Li
- Department of Dermatology, The 2nd Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - C Lv
- Dalian Skin Disease Hospital, Dalian, Liaoning, China
| | - M-Q Man
- Dermatology Services, Veterans Affair Medical Center and University of California, San Francisco, CA, USA
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197
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Wu Z, Liu K, Lv C, Zhong S, Wang Q, Liu T, Liu X, Yin Y, Hu Y, Wei D, Liu Z. Ultrahigh-Energy Density Lithium-Ion Cable Battery Based on the Carbon-Nanotube Woven Macrofilms. Small 2018; 14:e1800414. [PMID: 29683272 DOI: 10.1002/smll.201800414] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 03/16/2018] [Indexed: 04/14/2023]
Abstract
Moore's law predicts the performance of integrated circuit doubles every two years, lasting for more than five decades. However, the improvements of the performance of energy density in batteries lag far behind that. In addition, the poor flexibility, insufficient-energy density, and complexity of incorporation into wearable electronics remain considerable challenges for current battery technology. Herein, a lithium-ion cable battery is invented, which is insensitive to deformation due to its use of carbon nanotube (CNT) woven macrofilms as the charge collectors. An ultrahigh-tap density of 10 mg cm-2 of the electrodes can be obtained, which leads to an extremely high-energy density of 215 mWh cm-3 . The value is approximately seven times than that of the highest performance reported previously. In addition, the battery displays very stable rate performance and lower internal resistance than conventional lithium-ion batteries using metal charge collectors. Moreover, it demonstrates excellent convenience for connecting electronics as a new strategy is applied, in which both electrodes can be integrated into one end by a CNT macrorope. Such an ultrahigh-energy density lithium-ion cable battery provides a feasible way to power wearable electronics with commercial viability.
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Affiliation(s)
- Ziping Wu
- School of Materials Science and Engineering, Jiangxi University of Science and Technology, 86 Hong Qi Road, Ganzhou, 341000, P. R. China
- Center for Nanochemistry (CNC), College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China
| | - Kaixi Liu
- School of Materials Science and Engineering, Jiangxi University of Science and Technology, 86 Hong Qi Road, Ganzhou, 341000, P. R. China
| | - Chao Lv
- School of Materials Science and Engineering, Jiangxi University of Science and Technology, 86 Hong Qi Road, Ganzhou, 341000, P. R. China
| | - Shengwen Zhong
- School of Materials Science and Engineering, Jiangxi University of Science and Technology, 86 Hong Qi Road, Ganzhou, 341000, P. R. China
| | - Qinghui Wang
- School of Materials Science and Engineering, Jiangxi University of Science and Technology, 86 Hong Qi Road, Ganzhou, 341000, P. R. China
| | - Ting Liu
- School of Materials Science and Engineering, Jiangxi University of Science and Technology, 86 Hong Qi Road, Ganzhou, 341000, P. R. China
| | - Xianbin Liu
- School of Materials Science and Engineering, Jiangxi University of Science and Technology, 86 Hong Qi Road, Ganzhou, 341000, P. R. China
| | - Yanhong Yin
- School of Materials Science and Engineering, Jiangxi University of Science and Technology, 86 Hong Qi Road, Ganzhou, 341000, P. R. China
| | - Yingyan Hu
- School of Materials Science and Engineering, Jiangxi University of Science and Technology, 86 Hong Qi Road, Ganzhou, 341000, P. R. China
| | - Di Wei
- Beijing Graphene Institute, Beijing, 100094, P. R. China
| | - Zhongfan Liu
- Center for Nanochemistry (CNC), College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China
- Beijing Graphene Institute, Beijing, 100094, P. R. China
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Man M, Ye L, Lv C, Wang Z, Jeong S, Elias P. 281 Enhancement of epidermal function delays relapse of psoriasis. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.287] [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: 10/17/2022]
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199
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Wang T, Hong Y, Han H, Lv C, Jia B, Cao X, Han Q, Lu K, Li H, Fu Z, Lin J. [Cloning, eukaryotic expressing and function analysis of Schistosoma japonicum apoptosis gene Sjcaspase3]. Sheng Wu Gong Cheng Xue Bao 2018; 32:889-900. [PMID: 29019211 DOI: 10.13345/j.cjb.150478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
For further research of the apoptosis mechanism of Schistosoma japonicum (S. japonicum). The cDNA encoding Sjcaspase3 of Schistosoma japonicum was amplified by polymerase chain reaction (PCR) technique, which contained 900 nucleotides and encoded 299 amino acids. The theory molecular weight and isoelectric point (PI) of the deduced protein is 33.5 kDa and 6.39, respectively. Real-time PCR was used to analyze the transcription profiles of Sjcaspase3 at different development stages of S. japonicum. The results showed that this gene was expressed in all stages of S. japonicum with the highest expression in 21d worms, and the level of gene transcription in 42 d female worms was higher than that of male worms. The recombinant plasmid pXJ40-FLAG-Sjcaspase3 was constructed and transfection into Hela cells successfully. Real-time PCR and Western blotting analysis showed Sjcaspase3 was successfully expressed in Hela cells. Enzyme activity analysis revealed that recombinant Sjcaspase3 possessed the activity to cut substrate DEVD. Flow cytometry proved that Sjcaspase3 could induce early apoptosis of Hela cells. The results provide the basis for proceeding further study on the biological function of Sjcaspase3 and better understand the apoptosis mechanism of S. japonicum.
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Affiliation(s)
- Tao Wang
- Key Laboratory of Animal Parasitology, Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai 200241, China
| | - Yang Hong
- Key Laboratory of Animal Parasitology, Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai 200241, China
| | - Hongxiao Han
- Key Laboratory of Animal Parasitology, Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai 200241, China
| | - Chao Lv
- Key Laboratory of Animal Parasitology, Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai 200241, China
| | - Bingguang Jia
- Key Laboratory of Animal Parasitology, Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai 200241, China
| | - Xiaodan Cao
- Key Laboratory of Animal Parasitology, Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai 200241, China
| | - Qian Han
- Key Laboratory of Animal Parasitology, Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai 200241, China
| | - Ke Lu
- Key Laboratory of Animal Parasitology, Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai 200241, China
| | - Hao Li
- Key Laboratory of Animal Parasitology, Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai 200241, China
| | - Zhiqiang Fu
- Key Laboratory of Animal Parasitology, Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai 200241, China
| | - Jiaojiao Lin
- Key Laboratory of Animal Parasitology, Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai 200241, China
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Zhang S, Li J, Zhou G, Mu D, Yan J, Xing J, Yao Z, Sheng H, Li D, Lv C, Sun B, Hong Q, Guo H. Aurora-A regulates autophagy through the Akt pathway in human prostate cancer. Cancer Biomark 2018; 19:27-34. [PMID: 28269749 DOI: 10.3233/cbm-160238] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
BACKGROUND Aurora A kinase is frequently overexpressed in a variety of tumor types, including the prostate. However, the function of Aurora A in autophagy in prostate cancer has not been investigated. Here, we aimed to study the functioning mechanism and autophagy associated signaling pathways of Aurora A in prostate cancer. METHODS To investigate the biological function of Aurora A, down-regulation of Aurora A was performed followed by functional testing assays. Immunohistochemistry was used to detect the expression of Aurora A in human prostate cancer specimens. CCK8, Transwell, flow cytometric analysis and measurement of tumor formation in nude mice were performed to test the effects of Aurora A down-regulation in vivo and in vitro. Signaling pathway analysis was performed by using Western blot. Autophagy activity was measured by monitoring the expression levels of LC3-II. RESULTS Aurora A overexpression was significantly higher in human prostate cancer specimens than in BPH. Furthermore, Aurora A knockdown inhibited the proliferation of prostate cancer cells by suppressing the Akt pathway, indicating that Akt is a novel Aurora A substrate in prostate cancer. Additionally, Aurora A down-regulation prompts autophagy in prostate cancer cells. Most importantly, Aurora A ablation almost fully abrogates tumorigenesis in nude mice, suggesting that Aurora A is a key oncogenic effector in prostate cancer. CONCLUSIONS Taken together, our data suggest that Aurora-A plays an important role in the suppression of autophagy by inhibiting the phosphorylation of Akt, which in turn prevents autophagy-induced apoptosis in prostate cancer.
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