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Xie W, Wang M, Huang H, Yu Z, Jiang R, Yao S, Huang J, Hou Y, Fan B. NiFe MOF modified BiVO 4 photoanode with strong π-π conjugation enhances built-in electric field for boasting photoelectrochemical water oxidation. J Colloid Interface Sci 2024; 654:1492-1503. [PMID: 37923693 DOI: 10.1016/j.jcis.2023.10.144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 10/24/2023] [Accepted: 10/27/2023] [Indexed: 11/07/2023]
Abstract
The photoelectrochemical (PEC) performance ofBiVO4 is limited by sluggish kinetics and poor stability. In this work, a novel high-performance BiVO4/NiFe MOF(BPDC) photoanode is constructed by loading NiFe MOF with biphenyl-4,4'-dicarboxylic acid (BPDC) as an organic ligand on BiVO4 by a simple one-step hydrothermal method. The XPS, OCP, UPS, and KPFM show that the enhanced π-π conjugation effect causes more electrons transfer from the BiVO4 to the MOFs and affects the magnitude of the work function, leading to a strong built-in electric field to drive carrier separation and migration. Therefore, the BiVO4/NiFe MOF(BPDC) has a strong hole extraction and carrier separation capability to enhance photoelectrochemical water oxidation and improve photostability. The BiVO4/NiFe MOF(BPDC) photoanode has an enhanced photocurrent density of 4.16 mA cm-2 at 1.23 VRHE, which is 4.33 times higher than that of the pure BiVO4 (0.96 mA cm-2) photoanode with a negative shift of 376 mV in the onset potential plot, exhibiting excellent photostability of 7 h at 1.23 VRHE. This work demonstrates that the composite photoanodes constructed by BiVO4 and the MOFs with strong π-π conjugation are promising, which provides an effective strategy for the preparation of efficient and stable photoanodes.
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Affiliation(s)
- Wenhui Xie
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China
| | - Mi Wang
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, PR China
| | - Hongcheng Huang
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, PR China
| | - Zebin Yu
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, PR China.
| | - Ronghua Jiang
- School of Chemical and Environmental Engineering, Shaoguan University, Shaoguan 512005, PR China
| | - Shuangquan Yao
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China
| | - Jun Huang
- School of Civil Engineering and Architecture, Guangxi Minzu University, Nanning 530004, PR China
| | - Yanping Hou
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, PR China
| | - Ben Fan
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, PR China
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2
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Yang Y, Chen R, Rahman MU, Wei C, Fan B. The sprT Gene of Bacillus velezensis FZB42 Is Involved in Biofilm Formation and Bacilysin Production. Int J Mol Sci 2023; 24:16815. [PMID: 38069139 PMCID: PMC10706128 DOI: 10.3390/ijms242316815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 11/22/2023] [Accepted: 11/24/2023] [Indexed: 12/18/2023] Open
Abstract
Bacillus velezensis FZB42, a representative strain of plant-growth-promoting rhizobacteria (PGPR), can form robust biofilm and produce multiple antibiotics against a wild range of phytopathogens. In this study, we observed different biofilm morphology of the mutant Y4, derived from a TnYLB-1 transposon insertion library of B. velezensis FZB42. We identified that the transposon was inserted into the sprT gene in Y4. Our bioinformatics analysis revealed that the SprT protein is an unstable hydrophilic protein located in the cytoplasm. It is highly conserved in Bacillus species and predicted to function as a metalloprotease by binding zinc ions. We also demonstrated that ΔsprT significantly reduced the swarming ability of FZB42 by ~5-fold and sporulation capacity by ~25-fold. In addition, the antagonistic experiments showed that, compared to the wild type, the ΔsprT strain exhibited significantly reduced inhibition against Staphylococcus aureus ATCC-9144 and Phytophthora sojae, indicating that the inactivation of sprT led to decreased production of the antibiotic bacilysin. The HPLC-MS analysis confirmed that bacilysin was indeed decreased in the ΔsprT strain, and qPCR analysis revealed that ΔsprT down-regulated the expression of the genes for bacilysin biosynthesis. Our results suggest that the sprT gene plays a regulatory role in multiple characteristics of B. velezensis FZB42, including biofilm formation, swarming, sporulation, and antibiotic production.
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Affiliation(s)
- Yihan Yang
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing 210037, China;
- College of Life Science, Nanjing Forestry University, Nanjing 210037, China; (R.C.); (M.U.R.); (C.W.)
| | - Ruofu Chen
- College of Life Science, Nanjing Forestry University, Nanjing 210037, China; (R.C.); (M.U.R.); (C.W.)
| | - Mati Ur Rahman
- College of Life Science, Nanjing Forestry University, Nanjing 210037, China; (R.C.); (M.U.R.); (C.W.)
| | - Chunyue Wei
- College of Life Science, Nanjing Forestry University, Nanjing 210037, China; (R.C.); (M.U.R.); (C.W.)
| | - Ben Fan
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing 210037, China;
- College of Life Science, Nanjing Forestry University, Nanjing 210037, China; (R.C.); (M.U.R.); (C.W.)
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3
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Huang S, Zhang X, Song Z, Rahman MU, Fan B. Transcriptional Profiling and Transposon Mutagenesis Study of the Endophyte Pantoea eucalypti FBS135 Adapting to Nitrogen Starvation. Int J Mol Sci 2023; 24:14282. [PMID: 37762583 PMCID: PMC10532344 DOI: 10.3390/ijms241814282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 09/12/2023] [Accepted: 09/18/2023] [Indexed: 09/29/2023] Open
Abstract
The research on plant endophytes has been drawing a lot of attention in recent years. Pantoea belongs to a group of endophytes with plant growth-promoting activity and has been widely used in agricultural fields. In our earlier studies, Pantoea eucalypti FBS135 was isolated from healthy-growing Pinus massoniana and was able to promote pine growth. P. eucalypti FBS135 can grow under extremely low nitrogen conditions. To understand the mechanism of the low-nitrogen tolerance of this bacterium, the transcriptome of FBS135 in the absence of nitrogen was examined in this study. We found that FBS135 actively regulates its gene expression in response to nitrogen deficiency. Nearly half of the number (4475) of genes in FBS135 were differentially expressed under this condition, mostly downregulated, while it significantly upregulated many transportation-associated genes and some nitrogen metabolism-related genes. In the downregulated genes, the ribosome pathway-related ones were significantly enriched. Meanwhile, we constructed a Tn5 transposon library of FBS135, from which four genes involved in low-nitrogen tolerance were screened out, including the gene for the host-specific protein J, RNA polymerase σ factor RpoS, phosphoribosamine-glycine ligase, and serine acetyltransferase. Functional analysis of the genes revealed their potential roles in the adaptation to nitrogen limitation. The results obtained in this work shed light on the mechanism of endophytes represented by P. eucalypti FBS135, at the overall transcriptional level, to an environmentally limited nitrogen supply and provided a basis for further investigation on this topic.
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Affiliation(s)
- Shengquan Huang
- Department of Forestry, Nanjing Forestry University, Nanjing 210037, China (M.U.R.)
| | - Xiuyu Zhang
- Department of Biology and Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Zongwen Song
- Department of Forestry, Nanjing Forestry University, Nanjing 210037, China (M.U.R.)
| | - Mati Ur Rahman
- Department of Forestry, Nanjing Forestry University, Nanjing 210037, China (M.U.R.)
| | - Ben Fan
- Department of Forestry, Nanjing Forestry University, Nanjing 210037, China (M.U.R.)
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4
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Qiao J, Chen X, Xu X, Fan B, Guan YS, Yang H, Li Q. A metal-organic framework-based fluorescence resonance energy transfer nanoprobe for highly selective detection of Staphylococcus Aureus. J Mater Chem B 2023; 11:8519-8527. [PMID: 37606203 DOI: 10.1039/d3tb01428b] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Abstract
Survival and infection of pathogenic bacteria, such as Staphylococcus aureus (S. aureus), pose a serious threat to human health. Efficient methods for recognizing and quantifying low levels of bacteria are imperiously needed. Herein, we introduce a metal-organic framework (MOF)-based fluorescence resonance energy transfer (FRET) nanoprobe for ratiometric detection of S. aureus. The nanoprobe utilizes blue-emitting 7-hydroxycoumarin-4-acetic acid (HCAA) encapsulated inside zirconium (Zr)-based MOFs as the energy donor and green-emitting fluorescein isothiocyanate (FITC) as the energy acceptor. Especially, vancomycin (VAN) is employed as the recognition moiety to bind to the cell wall of S. aureus, leading to the disassembly of VAN-PEG-FITC from MOF HCAA@UiO-66. As the distance between the donor and acceptor increases, the donor signal correspondingly increases as the FRET signal decreases. By calculating the fluorescence intensity ratio, S. aureus can be quantified with a dynamic range of 1.05 × 103-1.05 × 107 CFU mL-1 and a detection limit of 12 CFU mL-1. Due to the unique high affinity of VAN to S. aureus, the nanoprobe shows high selectivity and sensitivity to S. aureus, even in real samples like lake water, orange juice, and saliva. The FRET-based ratiometric fluorescence bacterial detection method demonstrated in this work has a prospect in portable application and may reduce the potential threat of pathogens to human health.
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Affiliation(s)
- Jing Qiao
- Institute of Advanced Materials and School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China.
| | - Xuanbo Chen
- Institute of Advanced Materials and School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China.
| | - Xingliang Xu
- Institute of Advanced Materials and School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China.
| | - Ben Fan
- Institute of Advanced Materials and School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China.
| | - Ying-Shi Guan
- Institute of Advanced Materials and School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China.
| | - Hong Yang
- Institute of Advanced Materials and School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China.
| | - Quan Li
- Institute of Advanced Materials and School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China.
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5
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Pang H, Yu Z, Qin X, Fan B, Jiang R, Li S, Hou Y, Tang W, Wang M, Shi Z. Adjusting the valence band center of Co-Ni-bimetallic sulfides through lattice expansion and stacking faults triggered by strain engineering to boost oxygen evolution reaction. J Colloid Interface Sci 2023; 646:503-516. [PMID: 37209550 DOI: 10.1016/j.jcis.2023.05.071] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 05/06/2023] [Accepted: 05/11/2023] [Indexed: 05/22/2023]
Abstract
Stress engineering can improve catalytic performance by straining the catalyst lattice. An electrocatalyst, Co3S4/Ni3S2-10%Mo@NC, was prepared with abundant lattice distortion to boost oxygen evolution reaction (OER). With the assistance of the intramolecular steric hindrance effect of metal-organic frameworks, slow dissolution by MoO42- of the Ni substrate and recrystallization of Ni2+ was observed in the process of Co(OH)F crystal growth with mild temperature and short time reaction. The lattice expansion and stacking faults created defects inside the Co3S4 crystal, improved the material conductivity, optimized the valence band electron distribution of the material, and promoted the rapid conversion of the reaction intermediates. The presence of reactive intermediates of the OER under catalytic conditions was investigated using operando Raman spectroscopy. The electrocatalysts exhibited super high performance, a current density of 10 mA cm-2 at an overpotential of 164 mV and 100 mA cm-2 at 223 mV, which were comparable to those of integrated RuO2. Our work for the first time demonstrates that the dissolution-recrystallization triggered by strain engineering is a good modulation approach to adjust the structure and surface activity of catalyst, suggesting promising industrial application.
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Affiliation(s)
- Han Pang
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, P.R.China
| | - Zebin Yu
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, P.R.China.
| | - Xuanning Qin
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, P.R.China
| | - Ben Fan
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, P.R.China
| | - Ronghua Jiang
- School of Chemical and Environmental Engineering, Shaoguan University, Shaoguan 512005, P. R. China
| | - Shuang Li
- School of Environmental Science and Technology, Dalian University of Technology, Dalian 116023, P. R. China
| | - Yanping Hou
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, P.R.China
| | - Wenjun Tang
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, P.R.China
| | - Mi Wang
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, P.R.China
| | - Zhikai Shi
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, P.R.China
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6
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Zhang X, Geng K, Wu N, Hu G, Fan B, He J, Qiao W. Sustained anaerobic degradation of 4-chloro-2-methylphenoxyacetic acid by acclimated sludge in a continuous-flow reactor. Chemosphere 2023; 330:138749. [PMID: 37086982 DOI: 10.1016/j.chemosphere.2023.138749] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 04/19/2023] [Accepted: 04/20/2023] [Indexed: 05/03/2023]
Abstract
4-Chloro-2-methylphenoxyacetic acid (MCPA) is a widely used herbicide across the world. MCPA is persistent and easily transports into anoxic environment, such as groundwater, sediments and deep soils. However, little research on anaerobic microbial degradation of MCPA was carried out. The functional microorganisms as well as the catabolic pathway are still unknown. In this research, an anaerobic MCPA-degrading bacterial consortium was enriched from the river sediment near a pesticide-manufacturing plant. After about 6 months' acclimation, the MCPA transformation rate of the consortium reached 4.32 μmol g-1 day-1, 25 times faster than that of the original sludge. 96% of added MCPA (2.5 mM) was degraded within 9 d of incubation. Three metabolites including 4-chloro-2-methylphenol (MCP), 2-methylphenol (2-MP) and phenol were identified during the anaerobic degradation of MCPA. An anaerobic catabolic pathway was firstly proposed: firstly, MCPA was transformed to MCP via the cleavage of the aryl ether, then MCP was reductively dechlorinated to 2-MP which was further demethylated to phenol. The 16S rRNA gene amplicon sequencing revealed a substantial shift in the bacterial community composition after the acclimation. SBR1031, Acidaminococcaceae, Aminicenantales, Syntrophorhabdus, Acidaminobacter, Bacteroidetes_vadinHA17, Methanosaeta, Bathyarchaeia, KD4-96, Anaeromyxobacter, and Dehalobacter were significantly increased in the enriched consortium after acclimation, and positively correlated with the anaerobic degradation of MCPA as suggested by heat map correlation analysis. This study provides a basis for further elucidation of the anaerobic catabolism of MCPA, and contributes to developing efficient and low-cost anaerobic treatment technologies for MCPA pollution.
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Affiliation(s)
- Xuan Zhang
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing, 210095, China
| | - Keke Geng
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing, 210095, China
| | - Ningning Wu
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing, 210095, China
| | - Gang Hu
- Laboratory Centre of Life Science, College of Life Science, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, PR China
| | - Ben Fan
- College of Forest Resources and Environment, Nanjing Forestry University, Nanjing, Jiangsu, 210037, PR China
| | - Jian He
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing, 210095, China
| | - Wenjing Qiao
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing, 210095, China.
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Nakamura Y, Yoshida S, Arita Y, Takeshita R, Kimura K, Aida Y, Asai S, Maezawa Y, Yoshitomi K, Chen W, Soma T, Kobayashi M, Fujiwara M, Fan B, Ishikawa Y, Fukuda S, Waseda Y, Tanaka H, Yokoyama M, Jinzaki M, Fujii Y. Can we avoid second transurethral resection according to VI-RADS score in patients with high-risk non-muscle-invasive bladder cancer? Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00645-0] [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: 02/12/2023]
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8
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Fukuda S, Kobayashi M, Chen W, Fan B, Liu F, Afari J, Dhanji S, Ghassemzadeh S, Shah A, Schmeusser B, Greenwald R, Medline A, Kamal F, Ali A, Nakayama A, Meagher M, Patil D, Tanaka H, Saito K, Derweesh I, Master V, Fujii Y. Impact of preoperative C-reactive protein level on oncological outcomes after nephrectomy in patients with high-risk renal cell carcinoma: An analysis from the International Marker Consortium for Renal Cancer (INMARC) cohort. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00507-9] [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: 02/12/2023]
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9
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Zheng Z, Wei S, Xie W, Ren L, Fan B, Fu H, Yang D. Determination and comparison of effective moisture diffusivity of carrot (core and cortex) during hot air drying. J FOOD PROCESS ENG 2022. [DOI: 10.1111/jfpe.14236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Zhaohui Zheng
- College of Engineering China Agricultural University Beijing China
| | - Shuo Wei
- College of Engineering China Agricultural University Beijing China
- College of Tobacco Science Henan Agricultural University Henan Zhengzhou China
| | - Weijun Xie
- College of Engineering China Agricultural University Beijing China
- College of Mechanical and Electronic Engineering Nanjing Forestry University Nanjing China
| | - Liuyang Ren
- College of Engineering China Agricultural University Beijing China
| | - Ben Fan
- College of Engineering China Agricultural University Beijing China
| | - Hanyu Fu
- College of Engineering China Agricultural University Beijing China
| | - Deyong Yang
- College of Engineering China Agricultural University Beijing China
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He J, Smith‐Hall C, Zhou W, Zhou W, Wang Y, Fan B. Uncovering caterpillar fungus (
Ophiocordyceps sinensis
) consumption patterns and linking them to conservation interventions. Conservat Sci and Prac 2022. [DOI: 10.1111/csp2.12759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Affiliation(s)
- Jun He
- National Centre for Borderland Ethnic Studies in Southwest China Yunnan University Kunming China
| | - Carsten Smith‐Hall
- Department of Food and Resource Economics (IFRO) University of Copenhagen Frederiksberg C Denmark
| | - Wen Zhou
- National Centre for Borderland Ethnic Studies in Southwest China Yunnan University Kunming China
| | - Weijia Zhou
- National Centre for Borderland Ethnic Studies in Southwest China Yunnan University Kunming China
- Institute of Ethnic Culture Dali University Dali China
| | - Yunshang Wang
- School of International Relations Yunnan University Kunming China
| | - Ben Fan
- National Centre for Borderland Ethnic Studies in Southwest China Yunnan University Kunming China
- Centre for Southeast Asia Studies Kyoto University Kyoto Japan
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11
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Wang F, Fan B, Chen C, Zhang W. Acrylamide causes neurotoxicity by inhibiting glycolysis and causing the accumulation of carbonyl compounds in BV2 microglial cells. Food Chem Toxicol 2022; 163:112982. [DOI: 10.1016/j.fct.2022.112982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 03/26/2022] [Accepted: 03/30/2022] [Indexed: 10/18/2022]
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12
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Ding X, Guo Y, Ye J, Wu X, Lin S, Chen F, Zhu L, Huang L, Song X, Zhang Y, Dai L, Xi X, Huang J, Wang K, Fan B, Li D. Population differentiation and epidemic tracking of Bursaphelenchus xylophilus in China based on chromosome-level assembly and whole-genome sequencing data. Pest Manag Sci 2022; 78:1213-1226. [PMID: 34839581 PMCID: PMC9300093 DOI: 10.1002/ps.6738] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 11/09/2021] [Accepted: 11/28/2021] [Indexed: 05/13/2023]
Abstract
BACKGROUND Bursaphelenchus xylophilus, the pinewood nematode, kills millions of pine trees worldwide every year, and causes enormous economic and ecological losses. Despite extensive research on population variation, there is little understanding of the population-wide variation spectrum in China. RESULTS We sequenced an inbred B. xylophilus strain using Pacbio+Illumina+Bionano+Hi-C and generated a chromosome-level assembly (AH1) with six chromosomes of 77.1 Mb (chromosome N50: 12 Mb). The AH1 assembly shows very high continuity and completeness, and contains novel genes with potentially important functions compared with previous assemblies. Subsequently, we sequenced 181 strains from China and the USA and found ~7.8 million single nucleotide polymorphisms (SNPs). Analysis shows that the B. xylophilus population in China can be divided into geographically bounded subpopulations with severe cross-infection and potential migrations. In addition, distribution of B. xylophilus is dominated by temperature zones while geographically associated SNPs are mainly located on adaptation related GPCR gene families, suggesting the nematode has been evolving to adapt to different temperatures. A machine-learning based epidemic tracking method has been established to predict their geographical origins, which can be applied to any other species. CONCLUSION Our study provides the community with the first high-quality chromosome-level assembly which includes a comprehensive catalogue of genetic variations. It provides insights into population structure and effective tracking method for this invasive species, which facilitates future studies to address a variety of applied, genomic and evolutionary questions in B. xylophilus as well as related species.
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Affiliation(s)
- Xiaolei Ding
- Co‐Innovation Center for Sustainable Forestry in Southern China, College of ForestryNanjing Forestry UniversityNanjingChina
- Jiangsu Key Laboratory for Prevention and Management of Invasive SpeciesNanjingChina
- Zilkha Neurogenetic Institute, University of Southern CaliforniaLos AngelesCAUSA
| | - Yunfei Guo
- Zilkha Neurogenetic Institute, University of Southern CaliforniaLos AngelesCAUSA
- Department of Preventive MedicineUniversity of Southern CaliforniaLos AngelesCAUSA
| | - Jianren Ye
- Co‐Innovation Center for Sustainable Forestry in Southern China, College of ForestryNanjing Forestry UniversityNanjingChina
- Jiangsu Key Laboratory for Prevention and Management of Invasive SpeciesNanjingChina
| | - Xiaoqin Wu
- Co‐Innovation Center for Sustainable Forestry in Southern China, College of ForestryNanjing Forestry UniversityNanjingChina
- Jiangsu Key Laboratory for Prevention and Management of Invasive SpeciesNanjingChina
| | - Sixi Lin
- Co‐Innovation Center for Sustainable Forestry in Southern China, College of ForestryNanjing Forestry UniversityNanjingChina
- Jiangsu Key Laboratory for Prevention and Management of Invasive SpeciesNanjingChina
| | - Fengmao Chen
- Co‐Innovation Center for Sustainable Forestry in Southern China, College of ForestryNanjing Forestry UniversityNanjingChina
- Jiangsu Key Laboratory for Prevention and Management of Invasive SpeciesNanjingChina
| | - Lihua Zhu
- Co‐Innovation Center for Sustainable Forestry in Southern China, College of ForestryNanjing Forestry UniversityNanjingChina
- Jiangsu Key Laboratory for Prevention and Management of Invasive SpeciesNanjingChina
| | - Lin Huang
- Co‐Innovation Center for Sustainable Forestry in Southern China, College of ForestryNanjing Forestry UniversityNanjingChina
- Jiangsu Key Laboratory for Prevention and Management of Invasive SpeciesNanjingChina
| | - Xiaofeng Song
- Department of Biomedical EngineeringNanjing University of Aeronautics and AstronauticsNanjingChina
| | - Yi Zhang
- Co‐Innovation Center for Sustainable Forestry in Southern China, College of ForestryNanjing Forestry UniversityNanjingChina
- Jiangsu Key Laboratory for Prevention and Management of Invasive SpeciesNanjingChina
| | - Ling Dai
- Co‐Innovation Center for Sustainable Forestry in Southern China, College of ForestryNanjing Forestry UniversityNanjingChina
- Jiangsu Key Laboratory for Prevention and Management of Invasive SpeciesNanjingChina
| | - Xiaotong Xi
- Co‐Innovation Center for Sustainable Forestry in Southern China, College of ForestryNanjing Forestry UniversityNanjingChina
- Jiangsu Key Laboratory for Prevention and Management of Invasive SpeciesNanjingChina
| | - Jinsi Huang
- Co‐Innovation Center for Sustainable Forestry in Southern China, College of ForestryNanjing Forestry UniversityNanjingChina
- Jiangsu Key Laboratory for Prevention and Management of Invasive SpeciesNanjingChina
| | - Kai Wang
- Zilkha Neurogenetic Institute, University of Southern CaliforniaLos AngelesCAUSA
- Department of Preventive MedicineUniversity of Southern CaliforniaLos AngelesCAUSA
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, Children's Hospital of PhiladelphiaPhiladelphiaPAUSA
- Department of Pathology and Laboratory MedicineUniversity of PennsylvaniaPhiladelphiaPAUSA
| | - Ben Fan
- Co‐Innovation Center for Sustainable Forestry in Southern China, College of ForestryNanjing Forestry UniversityNanjingChina
- Jiangsu Key Laboratory for Prevention and Management of Invasive SpeciesNanjingChina
| | - De‐Wei Li
- The Connecticut Agricultural Experiment Station Valley LaboratoryWindsorCTUSA
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Ishikawa Y, Uehara S, Ishihara K, Hirose K, Soma T, Fujiwara M, Kobayashi M, Fan B, Nakamura Y, Uchida Y, Fukuda S, Tanaka H, Yoshida S, Yokoyama M, Matsuoka Y, Fujii Y. Variability in diagnostic performance of non-muscle invasive bladder cancer for each region using fluorescence cystoscopy with orally administered 5-aminolevulinic acid. Eur Urol 2022. [DOI: 10.1016/s0302-2838(22)00317-7] [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: 11/30/2022]
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Ishikawa Y, Sho U, Ishihara K, Hirose K, Soma T, Fujiwara M, Kobayashi M, Fan B, Nakamura Y, Uchida Y, Fukuda S, Tanaka H, Yoshida S, Yokoyama M, Matsuoka Y, Fujii Y. Orally administered 5-aminolevulinic acid can cause intraoperative hypotension in patients with bladder cancer undergoing transurethral resection. Eur Urol 2022. [DOI: 10.1016/s0302-2838(22)00332-3] [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: 11/28/2022]
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15
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Ding L, Sun Q, Yu Z, Sun L, Jiang R, Hou Y, Huang J, Zhong T, Chen H, Lian C, Fan B. Adjusting the match-degree between electron library and surface-active sites and forming surface polarization in MOF-based photo-cocatalysts for accelerating electron transfer. Catal Sci Technol 2022. [DOI: 10.1039/d2cy01323a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Ni-CoP supported by a carbon matrix as the cocatalyst is synthesized by precisely controlling the pyrolysis temperature for the metal–organic framework, then loaded onto the CdS host catalyst by means of self-assembly for photocatalytic hydrogen production.
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Affiliation(s)
- Ling Ding
- MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Guangxi key Laboratory of Processing for Nonferrous Featured Metals and Materials, School of Resources, Environment and Materials, Nanning 530004, Guangxi, P.R. China
| | - Qianqian Sun
- MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Guangxi key Laboratory of Processing for Nonferrous Featured Metals and Materials, School of Resources, Environment and Materials, Nanning 530004, Guangxi, P.R. China
| | - Zebin Yu
- MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Guangxi key Laboratory of Processing for Nonferrous Featured Metals and Materials, School of Resources, Environment and Materials, Nanning 530004, Guangxi, P.R. China
| | - Lei Sun
- School of Chemical Engineering and Technology, Hainan University, Haikou 570228, PR China
| | - Ronghua Jiang
- School of Chemical and Environmental Engineering, Shaoguan University, Shaoguan 512005, P. R. China
| | - Yanping Hou
- MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Guangxi key Laboratory of Processing for Nonferrous Featured Metals and Materials, School of Resources, Environment and Materials, Nanning 530004, Guangxi, P.R. China
| | - Jun Huang
- College of Civil Engineering & Architecture, Guangxi University, Nanning 530004, P. R. China
| | - Tao Zhong
- MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Guangxi key Laboratory of Processing for Nonferrous Featured Metals and Materials, School of Resources, Environment and Materials, Nanning 530004, Guangxi, P.R. China
| | - Huajiao Chen
- MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Guangxi key Laboratory of Processing for Nonferrous Featured Metals and Materials, School of Resources, Environment and Materials, Nanning 530004, Guangxi, P.R. China
| | - CuiFang Lian
- MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Guangxi key Laboratory of Processing for Nonferrous Featured Metals and Materials, School of Resources, Environment and Materials, Nanning 530004, Guangxi, P.R. China
| | - Ben Fan
- MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Guangxi key Laboratory of Processing for Nonferrous Featured Metals and Materials, School of Resources, Environment and Materials, Nanning 530004, Guangxi, P.R. China
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Han X, Shen D, Xiong Q, Bao B, Zhang W, Dai T, Zhao Y, Borriss R, Fan B. The Plant-Beneficial Rhizobacterium Bacillus velezensis FZB42 Controls the Soybean Pathogen Phytophthora sojae Due to Bacilysin Production. Appl Environ Microbiol 2021; 87:e0160121. [PMID: 34550751 PMCID: PMC8580012 DOI: 10.1128/aem.01601-21] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 09/14/2021] [Indexed: 11/20/2022] Open
Abstract
Soybean root rot caused by the oomycete Phytophthora sojae is a serious soilborne disease threatening soybean production in China. Bacillus velezensis FZB42 is a model strain for Gram-positive plant growth-promoting rhizobacteria and is able to produce multiple antibiotics. In this study, we demonstrated that B. velezensis FZB42 can efficiently antagonize P. sojae. The underlying mechanism for the inhibition was then investigated. The FZB42 mutants deficient in the synthesis of lipopeptides (bacillomycin D and fengycin), known to have antifungal activities, and polyketides (bacillaene, difficidin, and macrolactin), known to have antibacterial activities, were not impaired in their antagonism toward P. sojae; in contrast, mutants deficient in bacilysin biosynthesis completely lost their antagonistic activities toward P. sojae, indicating that bacilysin was responsible for the activity. Isolated pure bacilysin confirmed this inference. Bacilysin was previously shown to be antagonistic mainly toward prokaryotic bacteria rather than eukaryotes. Here, we found that bacilysin could severely damage the hyphal structures of P. sojae and lead to the loss of its intracellular contents. A device was invented allowing interactions between P. sojae and B. velezensis FZB42 on nutrient agar. In this manner, the effect of FZB42 on P. sojae was studied by transcriptomics. FZB42 significantly inhibited the expression of P. sojae genes related to growth, macromolecule biosynthesis, pathogenicity, and ribosomes. Among them, the genes for pectate lyase were the most significantly downregulated. Additionally, we showed that bacilysin effectively prevents soybean sprouts from being infected by P. sojae and could antagonize diverse Phytophthora species, such as Phytophthora palmivora, P. melonis, P. capsici, P. litchi, and, most importantly, P. infestans. IMPORTANCEPhytophthora spp. are widespread eukaryotic phytopathogens and often extremely harmful. Phytophthora can infect many types of plants important to agriculture and forestry and thus cause large economic losses. Perhaps due to inappropriate recognition of Phytophthora as a common pathogen in history, research on the biological control of Phytophthora is limited. This study shows that B. velezensis FZB42 can antagonize various Phytophthora species and prevent the infection of soybean seedlings by P. sojae. The antibiotic produced by FZB42, bacilysin, which was already known to have antibacterial effectiveness, is responsible for the inhibitory action against Phytophthora. We further showed that some Phytophthora genes and pathways may be targeted in future biocontrol studies. Therefore, our data provide a basis for the development of new tools for the prevention and control of root and stem rot in soybean and other plant diseases caused by Phytophthora.
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Affiliation(s)
- Xingshan Han
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Dongxia Shen
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Qin Xiong
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China
| | - Beihua Bao
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Wenbo Zhang
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Tingting Dai
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Yinjuan Zhao
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Rainer Borriss
- Institut für Biologie, Humboldt Universität Berlin, Greifswald, Germany
| | - Ben Fan
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
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Ding M, Cui H, Li B, Zou B, Xu Y, Fan B, Li W, Ma L, Yu J, Wang L. Integrating Preoperative CT and Clinical Factors for Lymph Node Metastasis Prediction in Esophageal Cancer by Feature-Wise Attentional Graph Neural Network (FAGNN). Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.545] [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: 11/26/2022]
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18
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Yang L, Li B, Xu Y, Zou B, Fan B, Qin W, Fan X, Zhang D, Wang L. The Role of Adjuvant Chemotherapy in Patients With Stage IB Non-Small Cell Lung Cancer. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1288] [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: 11/28/2022]
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Fan X, Li B, Wang S, Fan B, Wang C, Yang L, Qin W, Zhang D, Wang L. Prophylactic Cranial Irradiation-Related Lymphopenia Affects Progression-Free Survival in Patients With Small Cell Lung Cancer. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Wang R, Wu S, Qian D, Zhang Y, Fan B, Hu M. A Lung Cancer Auxiliary Diagnostic Method: Deep Learning Based Mediastinal Lymphatic Partitions Segmentation for Cancer Staging. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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21
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Cao X, Li Y, Fan J, Zhao Y, Borriss R, Fan B. Two Lysine Sites That Can Be Malonylated Are Important for LuxS Regulatory Roles in Bacillus velezensis. Microorganisms 2021; 9:microorganisms9061338. [PMID: 34205485 PMCID: PMC8233902 DOI: 10.3390/microorganisms9061338] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 05/13/2021] [Accepted: 06/09/2021] [Indexed: 11/28/2022] Open
Abstract
S-ribosylhomocysteine lyase (LuxS) has been shown to regulate bacterial multicellular behaviors, typically biofilm formation. However, the mechanisms for the regulation are still mysterious. We previously identified a malonylation modification on K124 and K130 of the LuxS in the plant growth-promoting rhizobacterium B. velezensis (FZB42). In this work, we investigated the effects of the two malonylation sites on biofilm formation and other biological characteristics of FZB42. The results showed that the K124R mutation could severely impair biofilm formation, swarming, and sporulation but promote AI-2 production, suggesting inhibitory effects of high-level AI-2 on the features. All mutations (K124R, K124E, K130R, and K130E) suppressed FZB42 sporulation but increased its antibiotic production. The double mutations generally had a synergistic effect or at least equal to the effects of the single mutations. The mutation of K130 but not of K124 decreased the in vitro enzymatic activity of LuxS, corresponding to the conservation of K130 among various Bacillus LuxS proteins. From the results, we deduce that an alternative regulatory circuit may exist to compensate for the roles of LuxS upon its disruption. This study broadens the understanding of the biological function of LuxS in bacilli and underlines the importance of the two post-translational modification sites.
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Affiliation(s)
- Xianming Cao
- College of Forestry, Nanjing Forestry University, Nanjing 210037, China; (X.C.); (Y.L.); (Y.Z.)
| | - Yulong Li
- College of Forestry, Nanjing Forestry University, Nanjing 210037, China; (X.C.); (Y.L.); (Y.Z.)
| | - Jialu Fan
- College of Life Sciences, Nanjing Normal University, Nanjing 210046, China;
| | - Yinjuan Zhao
- College of Forestry, Nanjing Forestry University, Nanjing 210037, China; (X.C.); (Y.L.); (Y.Z.)
| | - Rainer Borriss
- Institut für Biologie, Humboldt Universität Berlin, 10115 Berlin, Germany;
- Nord Reet UG, Marienstr. 27a, 17489 Greifswald, Germany
| | - Ben Fan
- College of Forestry, Nanjing Forestry University, Nanjing 210037, China; (X.C.); (Y.L.); (Y.Z.)
- Correspondence:
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22
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Li B, Li W, Fan B, Zou B, Jiang C, Sun X, Yu J, Wang L. Efficacy of Radiotherapy In Oligometastatic Esophageal Squamous Cell Cancer Patients: New Evidence From A Retrospective Study. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1857] [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: 11/25/2022]
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23
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Li B, Jiang C, Pang L, Fan B, Zou B, Ding M, Sun X, Yu J, Wang L. Toxicity Profile of Combining Immune Checkpoint Inhibitors and Thoracic Radiotherapy in Non-Small Cell Lung Cancer: A Systematic Analysis of Literature. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1260] [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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Fan B, Chen LP, Yuan YH, Xiao HN, Lv XS, Xia ZY. MiR-15a-3p suppresses the growth and metastasis of ovarian cancer cell by targeting Twist1. Eur Rev Med Pharmacol Sci 2020; 23:1934-1946. [PMID: 30915736 DOI: 10.26355/eurrev_201903_17232] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To investigate the roles of miR-15a-3p in ovarian cancer cell growth and metastasis. PATIENTS AND METHODS A key role of miR-15a-3p was identified via gene profiling and bioinformatics analysis. The impact of miR-15a-3p on ovarian cancer cell growth, migration and invasion was measured by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT), wound-healing and transwell invasion assays. Bioinformatics and luciferase reporter assays were applied to identify that twist family BHLH transcription factor 1 (Twist1) was the target gene of miR-15a-3p. The miR-15a-3p level and the expression of Twist1 were detected using quantitative Real-time polymerase chain reaction (qRT-PCR) assay. The expressions of N-cadherin and E-cadherin were measured by immunofluorescence staining. Small interfering RNA targeting Twist1 and pCDNA3.1 containing Twist1 were applied to decrease and increase the expression of Twist1, respectively. RESULTS miR-15a-3p was markedly down-regulated in ovarian cancer. Exogenous up-regulation of miR-15a-3p inhibited the growth, colony formation, migration and invasion of ovarian cancer cell in vitro. Furthermore, a xenograft model indicated that miR-15a-3p inhibited tumour growth and the metastatic potential of ovarian cancer cell in vivo. We found that Twist1 was the direct target of miR-15a-3p in ovarian cancer and that its expression was negatively correlated with the level of miR-15a-3p in ovarian cancer tissues. Up-regulation of miR-15a-3p rescued the inhibitory impact of miR-15a-3p on ovarian cancer cell growth, migration and invasion. Finally, down-regulation of Twist1 mimicked the suppressive effects of miR-15a-3p on ovarian cancer cell. CONCLUSIONS We demonstrated that miR-15a-3p is down-regulated in ovarian cancer. Up-regulation of miR-15a-3p restrains the growth and metastasis of ovarian cancer cell by regulating Twist1.
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Affiliation(s)
- B Fan
- Obstetrics and Gynecology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, China.
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Fan B, Li L, Xiao DJ, Xu T. Study of miR-26a inhibiting epithelial-mesenchymal transition and invasion of Tu686 cell line through SMAD1. Eur Rev Med Pharmacol Sci 2020; 23:217-224. [PMID: 30657563 DOI: 10.26355/eurrev_201901_16767] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE This study aims to investigate the effect of miR-26a on the epithelial-mesenchymal transition (EMT) and invasion of Tu686 cell line through SMAD1. MATERIALS AND METHODS Tu686 Squamous cell carcinoma of head and neck (SCCHN) cell strains were divided into the miR-26a group, miR-NC group, co-transfection group and blank control group. Among them, the miR-26a group only transfected miR-26a mimics, the miR-NC group only transfected miR-26a negative control, the co-transfection group transfected miR-26a mimics and pcDNA3.1-SMAD1 plasmid. The qRT-PCR method was used for the detection of the expressions of miR-26a and SMAD1 in each group of cells, transwell assay for the detection of the invasion ability of each group of cells and Western blot for detecting the expression level of SMAD1 and the expressions of EMT-related proteins E-cadherin and N-cadherin. RESULTS The relative expression of miR-26a in the miR-26a group was significantly higher than that in the miR-NC group and blank control group, and the relative expression in the co-transfection group was significantly higher than that in the miR-NC and blank control groups. The relative expression of SMAD1 in the miR-26a group was significantly lower than that in the miR-NC and blank control groups, and the relative expression in the co-transfection group was lower than that in the miR-NC and blank control groups, and higher than that in the miR-26a group (all p<0.05). There was no significant difference between the miR-NC group and the blank control group (p>0.05). CONCLUSIONS miR-26a may reduce the expression level of SMAD1, affect the expression of EMT-related proteins, inhibit the EMT function of Tu686 cells of squamous cell carcinoma of head and neck, and inhibit the invasion of them.
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Affiliation(s)
- B Fan
- Department of Otorhinolaryngology, Wuxi No. 2 People's Hospital, Wuxi, P.R. China.
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Song Z, Lu Y, Liu X, Wei C, Oladipo A, Fan B. Evaluation of Pantoea eucalypti FBS135 for pine (Pinus massoniana) growth promotion and its genome analysis. J Appl Microbiol 2020; 129:958-970. [PMID: 32329126 DOI: 10.1111/jam.14673] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 04/16/2020] [Accepted: 04/18/2020] [Indexed: 12/15/2022]
Abstract
AIMS Pinus massoniana is one of the most widely distributed forest plants in China. In this study, we isolated a bacterial endophyte (designated FBS135) from apical buds and needles of P. massoniana. Investigations were performed to understand the effects of the strain on pine growth, its genomic features and the functions of the plasmids it carries. METHODS AND RESULTS Based on its morphological features and 16S rRNA sequence, strain FBS135 was primarily identified as Pantoea eucalypti. We found that FBS135 not only promoted the growth of P. massoniana seedlings, but also significantly increased the survival rate of pine seedlings. The whole genome of FBS135 was sequenced, which revealed that the bacterium carries one chromosome and four plasmids. Its chromosome is 4 023 751 bp in size and contains dozens of genes involved in plant symbiosis. Curing one of the four plasmids, pPant1, resulted in a decrease in the size of the FBS135 colonies and the loss of the ability to synthesize yellow pigment, indicating that this plasmid may be very important for FBS135. CONCLUSIONS Pantoea eucalypti FBS135 has a genomic basis to be implicated in plant-associated lifestyle and was established to have the capability to promote pine growth. SIGNIFICANCE AND IMPACT OF THE STUDY To the best of our knowledge, this is the first report that such a bacterial species, P. eucalypti, was isolated from pine trees and evidenced to have pine beneficial activities. Our results elucidate the ecological effects of endophytes on forest plants as well as endophyte-plant interaction mechanisms.
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Affiliation(s)
- Z Song
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Y Lu
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
| | - X Liu
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
| | - C Wei
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
| | - A Oladipo
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
| | - B Fan
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
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Ezzati G, Fenton O, Healy MG, Christianson L, Feyereisen GW, Thornton S, Chen Q, Fan B, Ding J, Daly K. Impact of P inputs on source-sink P dynamics of sediment along an agricultural ditch network. J Environ Manage 2020; 257:109988. [PMID: 31868644 DOI: 10.1016/j.jenvman.2019.109988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 12/02/2019] [Accepted: 12/11/2019] [Indexed: 06/10/2023]
Abstract
Phosphorus (P) loss from intensive dairy farms is a pressure on water quality in agricultural catchments. At farm scale, P sources can enter in-field drains and open ditches, resulting in transfer along ditch networks and delivery into nearby streams. Open ditches could be a potential location for P mitigation if the right location was identified, depending on P sources entering the ditch and the source-sink dynamics at the sediment-water interface. The objective of this study was to identify the right location along a ditch to mitigate P losses on an intensive dairy farm. High spatial resolution grab samples for water quality, along with sediment and bankside samples, were collected along an open ditch network to characterise the P dynamics within the ditch. Phosphorus inputs to the ditch adversely affected water quality, and a step change in P concentrations (increase in mean dissolved reactive phosphorus (DRP) from 0.054 to 0.228 mg L-1) midway along the section of the ditch sampled, signalled the influence of a point source entering the ditch. Phosphorus inputs altered sediment P sorption properties as P accumulated along the length of the ditch. Accumulation of bankside and sediment labile extractable P, Mehlich 3 P (M3P) (from 13 to 97 mg kg-1) resulted in a decrease in P binding energies (k) to < 1 L mg-1 at downstream points and raised the equilibrium P concentrations (EPC0) from 0.07 to 4.61 mg L-1 along the ditch. The increase in EPC0 was in line with increasing dissolved and total P in water, demonstrating the role of sediment downstream in this ditch as a secondary source of P to water. Implementation of intervention measures are needed to both mitigate P loss and remediate sediment to restore the sink properties. In-ditch measures need to account for a physicochemical lag time before improvements in water quality will be observed.
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Affiliation(s)
- G Ezzati
- Teagasc, Environmental Research Centre, Johnstown Castle, Co. Wexford, Ireland; Civil Engineering, College of Science and Engineering, Ryan Institute, National University of Ireland, Galway, Galway, Ireland
| | - O Fenton
- Teagasc, Environmental Research Centre, Johnstown Castle, Co. Wexford, Ireland
| | - M G Healy
- Civil Engineering, College of Science and Engineering, Ryan Institute, National University of Ireland, Galway, Galway, Ireland
| | - L Christianson
- Department of Crop Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - G W Feyereisen
- USDA-Agricultural Research Service (ARS), St. Paul, MN, USA
| | - S Thornton
- Groundwater Protection and Restoration Group, Kroto Research Institute, University of Sheffield, Sheffield, United Kingdom
| | - Q Chen
- Beijing Key Larboratory of Farmyard Soil Pollution Prevention-control and Remediation; College of Resourse and Environmental Sciences, China Agricultural Univerisy, Beijing, 100193, PR China
| | - B Fan
- Beijing Key Larboratory of Farmyard Soil Pollution Prevention-control and Remediation; College of Resourse and Environmental Sciences, China Agricultural Univerisy, Beijing, 100193, PR China
| | - J Ding
- Beijing Key Larboratory of Farmyard Soil Pollution Prevention-control and Remediation; College of Resourse and Environmental Sciences, China Agricultural Univerisy, Beijing, 100193, PR China
| | - K Daly
- Teagasc, Environmental Research Centre, Johnstown Castle, Co. Wexford, Ireland.
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Fan B, Wang C, Ding X, Zhu B, Song X, Borriss R. AmyloWiki: an integrated database for Bacillus velezensis FZB42, the model strain for plant growth-promoting Bacilli. Database (Oxford) 2020; 2019:5520604. [PMID: 31219564 PMCID: PMC6585148 DOI: 10.1093/database/baz071] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 04/27/2019] [Accepted: 05/07/2019] [Indexed: 12/23/2022]
Abstract
Since its isolation 20 years ago, many studies have been devoted to Bacillus velezensis FZB42 (former name Bacillus amyloliquefaciens subsp. plantarum FZB42), which has been gradually accepted as a model organism for Gram-positive rhizobacteria. FZB42 is different from another widely studied bacterial strain, Bacillus subtilis 168, in its many features that are closely associated with plants. FZB42 represents a large group of Bacillus isolates that are beneficial to plants and of great importance in agriculture. In this work a database for FZB42 named 'AmyloWiki' is built to integrate all information of FZB42 available to date. The information includes the genomic, transcriptomic, proteomic, post-translational data as well as FZB42 unique genes, protein regulators, mutant availability, publications and etc. The website is built up with PHP and MySQL with a function of keyword searching, browsing, data-downloading and other functions.
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Affiliation(s)
- Ben Fan
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing 210037, China
| | - Cong Wang
- Department of Biomedical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
| | - Xiaolei Ding
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing 210037, China
| | - Bingyao Zhu
- Department of General Microbiology, Institute of Microbiology and Genetics, Georg-August University Göttingen, Grisebachstr. 8, D-37077 Göttingen, Germany
| | - Xiaofeng Song
- Department of Biomedical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
| | - Rainer Borriss
- Institut für Biologie, Humboldt Universität Berlin, 10115 Berlin, Germany, and Nord Reet UG, Marienstr. 27a, 17489 Greifswald, Germany
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Abstract
Textured surfaces, comprised of grooves filled with air, e.g., air-filled surfaces (AFS), or with liquid, e.g., liquid-filled surfaces (LFS), significantly influence fluid flows and the related electrokinetic streaming potential (Vs). Here, electroosmotic mobility related tensorial effects on the Vs were experimentally investigated. A significant modulation of the Vs, as high as 100%, due to transverse pressure gradients, was demonstrated. The study yields insights into understanding geometrical effects in electrolyte flows with implications to the establishment of local electric fields, energy generation, and biological separations.
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Affiliation(s)
- B Fan
- Program in Materials Science, Department of Mechanical Engineering , University of California, San Diego , La Jolla , California 92093 , United States
| | - P R Bandaru
- Program in Materials Science, Department of Mechanical Engineering , University of California, San Diego , La Jolla , California 92093 , United States
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30
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Fan B, Wang C, Song X, Ding X, Wu L, Wu H, Gao X, Borriss R. Corrigendum: Bacillus velezensis FZB42 in 2018: The Gram-Positive Model Strain for Plant Growth Promotion and Biocontrol. Front Microbiol 2019; 10:1279. [PMID: 31244802 PMCID: PMC6580152 DOI: 10.3389/fmicb.2019.01279] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Accepted: 05/22/2019] [Indexed: 11/28/2022] Open
Affiliation(s)
- Ben Fan
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Cong Wang
- Department of Biomedical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China
| | - Xiaofeng Song
- Department of Biomedical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China
| | - Xiaolei Ding
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Liming Wu
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, and Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, China
| | - Huijun Wu
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, and Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, China
| | - Xuewen Gao
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, and Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, China
| | - Rainer Borriss
- Institut für Biologie, Humboldt Universität Berlin, Berlin, Germany.,Nord Reet UG, Greifswald, Germany
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31
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Zhao Y, Fan W, Xu T, Tay FR, Gutmann JL, Fan B. Evaluation of several instrumentation techniques and irrigation methods on the percentage of untouched canal wall and accumulated dentine debris in C‐shaped canals. Int Endod J 2019; 52:1354-1365. [DOI: 10.1111/iej.13119] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 03/18/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Y. Zhao
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei‐MOST) & Key Laboratory of Oral Biomedicine Ministry of Education School & Hospital of Stomatology Wuhan University Wuhan China
| | - W. Fan
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei‐MOST) & Key Laboratory of Oral Biomedicine Ministry of Education School & Hospital of Stomatology Wuhan University Wuhan China
| | - T. Xu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei‐MOST) & Key Laboratory of Oral Biomedicine Ministry of Education School & Hospital of Stomatology Wuhan University Wuhan China
| | - F. R. Tay
- Department of Endodontics The Dental College of Georgia Augusta University Augusta GA USA
| | - J. L. Gutmann
- Department of Restorative Science/Endodontics Texas A&M University Baylor College of Dentistry Dallas TX USA
| | - B. Fan
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei‐MOST) & Key Laboratory of Oral Biomedicine Ministry of Education School & Hospital of Stomatology Wuhan University Wuhan China
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Liu B, Peng Q, Sheng M, Hu S, Qian M, Fan B, He J. Directed Evolution of Sulfonylurea Esterase and Characterization of a Variant with Improved Activity. J Agric Food Chem 2019; 67:836-843. [PMID: 30585487 DOI: 10.1021/acs.jafc.8b06198] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Esterase SulE detoxicates a variety of sulfonylurea herbicides through de-esterification. SulE exhibits high activity against thifensulfuron-methyl but low activity against other sulfonylureas. In this study, two variants, m2311 (P80R) and m0569 (P80R and G176A), with improved activity were screened from a mutation library constructed by error-prone PCR. Variant m2311 showed a higher activity against sulfonylureas in comparison variant m0569 and was further investigated. The kcat/ Km value of variant m2311 for metsulfuron-methyl, sulfometuron-methyl, chlorimuron-ethyl, tribenuron-methyl, and ethametsulfuron-methyl increased by 3.20-, 1.72-, 2.94-, 2.26- and 2.96-fold, respectively, in comparison with the wild type. Molecular modeling suggested that the activity improvement of variant m2311 is due to the substitution of Pro80 by arginine, leading to the formation of new hydrogen bonds between the enzyme and substrate. This study facilitates further elucidation of the structure and function of SulE and provides an improved gene resource for the detoxification of sulfonylurea residues and the genetic engineering of sulfonylurea-resistant crops.
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Affiliation(s)
- Bin Liu
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences , Nanjing Agricultural University , Nanjing 210095 , Jiangsu , People's Republic of China
| | - Qian Peng
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences , Nanjing Agricultural University , Nanjing 210095 , Jiangsu , People's Republic of China
| | - Mengyao Sheng
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences , Nanjing Agricultural University , Nanjing 210095 , Jiangsu , People's Republic of China
| | - Shishan Hu
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences , Nanjing Agricultural University , Nanjing 210095 , Jiangsu , People's Republic of China
| | - Meng Qian
- Laboratory Centre of Life Science, College of Life Sciences , Nanjing Agricultural University , Nanjing 210095 , Jiangsu , People's Republic of China
| | - Ben Fan
- College of Forest Resources and Environment , Nanjing Forestry University , Nanjing , Jiangsu , People's Republic of China
| | - Jian He
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences , Nanjing Agricultural University , Nanjing 210095 , Jiangsu , People's Republic of China
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33
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Chen HF, Jiang QJ, Qiu YQ, Chen XC, Fan B, Wang Y, Wang DN. Hollow-Core-Photonic-Crystal-Fiber-Based Miniaturized Sensor for the Detection of Aggregation-Induced-Emission Molecules. Anal Chem 2018; 91:780-784. [PMID: 30475594 DOI: 10.1021/acs.analchem.8b03219] [Citation(s) in RCA: 8] [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: 11/28/2022]
Abstract
A miniature sensor for detection of aggregation-induced-emission (AIE) molecules is proposed in this work. The sensing head is fabricated by use of hollow-core photonic crystal fiber with a core diameter of about 4.8 μm. The cladding holes are sealed with a fusion splicing technique, and the central hole remains open to allow the filtration of solution with AIE molecules. When the solution is excited by an ultraviolet lamp, the fluorescence is received by a fiber-optic spectrometer. The fluorescence intensity is associated with the concentration of AIE molecules and the infiltrated-core length. In the whole process of the experiments, the output-peak wavelength is stable, which indicates that the existing forms of AIE particles are stable, and the fluorescence reabsorption can be neglected. The experimental results obtained are in accordance with traditional microplate-spectrophotometer methods. The most exciting result is that the amount of sample measured can be as low as 0.36 nL, which allows the detection of AIE molecules at only 0.02 pmol. In addition, the miniature sensor was successfully applied to the detection of an AIE-based bioprobe for evaluating the activity of the dipeptidyl-peptidase 4 (DPP-4) inhibitor sitagliptin with an IC50 of 59.80 ± 3.06 nM. The advantages of small device size and nanoliter-scale sample volumes suggest that the proposed sensor is promising for many biosensing applications.
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Affiliation(s)
- H F Chen
- College of Optical and Electronic Technology , China Jiliang University , Hangzhou , Zhejiang 310018 , China.,State Key Laboratory of Advanced Optical Communication Systems and Networks , Shanghai Jiaotong University , Shanghai 200000 , China
| | - Q J Jiang
- College of Optical and Electronic Technology , China Jiliang University , Hangzhou , Zhejiang 310018 , China.,State Key Laboratory of Advanced Optical Communication Systems and Networks , Shanghai Jiaotong University , Shanghai 200000 , China
| | - Y Q Qiu
- College of Optical and Electronic Technology , China Jiliang University , Hangzhou , Zhejiang 310018 , China
| | - X C Chen
- College of Pharmaceutical Sciences , Zhejiang University , Hangzhou , Zhejiang 310058 , China
| | - B Fan
- College of Pharmaceutical Sciences , Zhejiang University , Hangzhou , Zhejiang 310058 , China
| | - Y Wang
- College of Pharmaceutical Sciences , Zhejiang University , Hangzhou , Zhejiang 310058 , China
| | - D N Wang
- College of Optical and Electronic Technology , China Jiliang University , Hangzhou , Zhejiang 310018 , China
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34
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Fan B, Wang C, Song X, Ding X, Wu L, Wu H, Gao X, Borriss R. Bacillus velezensis FZB42 in 2018: The Gram-Positive Model Strain for Plant Growth Promotion and Biocontrol. Front Microbiol 2018; 9:2491. [PMID: 30386322 PMCID: PMC6198173 DOI: 10.3389/fmicb.2018.02491] [Citation(s) in RCA: 165] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 09/28/2018] [Indexed: 12/31/2022] Open
Abstract
Bacillus velezensis FZB42, the model strain for Gram-positive plant-growth-promoting and biocontrol rhizobacteria, has been isolated in 1998 and sequenced in 2007. In order to celebrate these anniversaries, we summarize here the recent knowledge about FZB42. In last 20 years, more than 140 articles devoted to FZB42 have been published. At first, research was mainly focused on antimicrobial compounds, apparently responsible for biocontrol effects against plant pathogens, recent research is increasingly directed to expression of genes involved in bacteria–plant interaction, regulatory small RNAs (sRNAs), and on modification of enzymes involved in synthesis of antimicrobial compounds by processes such as acetylation and malonylation. Till now, 13 gene clusters involved in non-ribosomal and ribosomal synthesis of secondary metabolites with putative antimicrobial action have been identified within the genome of FZB42. These gene clusters cover around 10% of the whole genome. Antimicrobial compounds suppress not only growth of plant pathogenic bacteria and fungi, but could also stimulate induced systemic resistance (ISR) in plants. It has been found that besides secondary metabolites also volatile organic compounds are involved in the biocontrol effect exerted by FZB42 under biotic (plant pathogens) and abiotic stress conditions. In order to facilitate easy access to the genomic data, we have established an integrating data bank ‘AmyloWiki’ containing accumulated information about the genes present in FZB42, available mutant strains, and other aspects of FZB42 research, which is structured similar as the famous SubtiWiki data bank.
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Affiliation(s)
- Ben Fan
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Cong Wang
- Department of Biomedical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China
| | - Xiaofeng Song
- Department of Biomedical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China
| | - Xiaolei Ding
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Liming Wu
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, and Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, China
| | - Huijun Wu
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, and Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, China
| | - Xuewen Gao
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, and Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, China
| | - Rainer Borriss
- Institut für Biologie, Humboldt Universität Berlin, Berlin, Germany.,Nord Reet UG, Greifswald, Germany
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35
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Fan B, Bhattacharya A, Bandaru PR. Enhanced voltage generation through electrolyte flow on liquid-filled surfaces. Nat Commun 2018; 9:4050. [PMID: 30283012 PMCID: PMC6170469 DOI: 10.1038/s41467-018-06297-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [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: 03/22/2018] [Accepted: 08/28/2018] [Indexed: 11/10/2022] Open
Abstract
The generation of electrical voltage through the flow of an electrolyte over a charged surface may be used for energy transduction. Here, we show that enhanced electrical potential differences (i.e., streaming potential) may be obtained through the flow of salt water on liquid-filled surfaces that are infiltrated with a lower dielectric constant liquid, such as oil, to harness electrolyte slip and associated surface charge. A record-high figure of merit, in terms of the voltage generated per unit applied pressure, of 0.043 mV Pa−1 is obtained through the use of the liquid-filled surfaces. In comparison with air-filled surfaces, the figure of merit associated with the liquid-filled surface increases by a factor of 1.4. These results lay the basis for innovative surface charge engineering methodology for the study of electrokinetic phenomena at the microscale, with possible application in new electrical power sources. Superhydrophobic surfaces are expected to increase streaming potential, but are hindered by the presence of air. Here the authors enhance streaming potential by flowing high-dielectric salt water over liquid-filled surfaces infiltrated with low-dielectric liquid, harnessing electric slip and surface charge.
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Affiliation(s)
- B Fan
- Department of Mechanical Engineering, University of California, San Diego, La Jolla, 92093-0411, CA, USA
| | - A Bhattacharya
- Department of Mechanical Engineering, University of California, San Diego, La Jolla, 92093-0411, CA, USA
| | - P R Bandaru
- Department of Mechanical Engineering, University of California, San Diego, La Jolla, 92093-0411, CA, USA. .,Program in Materials Science, University of California, San Diego, La Jolla, 92093-0411, CA, USA.
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36
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Canbazoglu FM, Fan B, Vemuri K, Bandaru PR. Enhanced Solar Thermal Evaporation of Ethanol-Water Mixtures, through the Use of Porous Media. Langmuir 2018; 34:10523-10528. [PMID: 30130406 DOI: 10.1021/acs.langmuir.8b01731] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A significant enhancement of solar irradiation induced evaporation of water, and ethanol-water mixtures, through the use of carbon foam based porous media, is demonstrated. A relationship between the consequent rate of mass loss, with respect to the equilibrium vapor pressure, dynamic viscosity, surface tension, and density, was developed to explain experimental observations. The evaporative heat loss was parametrized through two convective heat transfer coefficients-one related to the surface and another related to the vapor external to the surface. The work promotes a better understanding of thermal processes in binary liquid mixtures with applications ranging from phase separation to distillation and desalination.
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Affiliation(s)
- F M Canbazoglu
- Department of Mechanical Engineering , University of California, San Diego , La Jolla , California , United States
| | - B Fan
- Department of Mechanical Engineering , University of California, San Diego , La Jolla , California , United States
| | - K Vemuri
- Department of Mechanical Engineering , University of California, San Diego , La Jolla , California , United States
| | - P R Bandaru
- Department of Mechanical Engineering , University of California, San Diego , La Jolla , California , United States
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37
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Kazemi L, Fan B, Sommer M, George K, Stranix-Chibanda L, Shepherd J. Tracking of Spine BMD (Bone Mineral Density) in Infants Exposed to TDF (Tenofovir Disproxil Fumarate) Medication in Utero and/or during Breast Feeding. J Clin Densitom 2018. [DOI: 10.1016/j.jocd.2017.10.033] [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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38
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Katzman WB, Vittinghoff E, Lin F, Schafer A, Long RK, Wong S, Gladin A, Fan B, Allaire B, Kado DM, Lane NE. Targeted spine strengthening exercise and posture training program to reduce hyperkyphosis in older adults: results from the study of hyperkyphosis, exercise, and function (SHEAF) randomized controlled trial. Osteoporos Int 2017; 28:2831-2841. [PMID: 28689306 PMCID: PMC5873977 DOI: 10.1007/s00198-017-4109-x] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 05/31/2017] [Indexed: 01/01/2023]
Abstract
A 6-month randomized controlled trial of spine-strengthening exercise and posture training reduced both radiographic and clinical measures of kyphosis. Participants receiving the intervention improved self-image and satisfaction with their appearance. Results suggest that spine-strengthening exercise and postural training may be an effective treatment option for older adults with hyperkyphosis. INTRODUCTION The purpose of the present study is to determine in a randomized controlled trial whether spine-strengthening exercises improve Cobb angle of kyphosis in community-dwelling older adults. METHODS We recruited adults ≥60 years with kyphosis ≥40° and enrolled 99 participants (71 women, 28 men), mean age 70.6 ± 0.6 years, range 60-88, with baseline Cobb angle 57.4 ± 12.5°. The intervention included group spine-strengthening exercise and postural training, delivered by a physical therapist, 1-h, three times weekly for 6 months. Controls received four group health education meetings. The primary outcome was change in the gold standard Cobb angle of kyphosis measured from standing lateral spine radiographs. Secondary outcomes included change in kyphometer-measured kyphosis, physical function (modified Physical Performance Test, gait speed, Timed Up and Go, Timed Loaded Standing, 6-Min Walk), and health-related quality of life (HRQoL) (PROMIS global health and physical function indexes, SRS-30 self-image domain). ANCOVA was used to assess treatment effects on change from baseline to 6 months in all outcomes. RESULTS There was a -3.0° (95% CI -5.2, -0.8) between-group difference in change in Cobb angle, p = 0.009, favoring the intervention and approximating the magnitude of change from an incident vertebral fracture. Kyphometer-measured kyphosis (p = 0.03) and SRS-30 self-esteem (p < 0.001) showed favorable between-group differences in change, with no group differences in physical function or additional HRQoL outcomes, p > 0.05. CONCLUSIONS Spine-strengthening exercise and posture training over 6 months reduced kyphosis compared to control. Our randomized controlled trial results suggest that a targeted kyphosis-specific exercise program may be an effective treatment option for older adults with hyperkyphosis. TRIAL REGISTRATION NUMBER AND NAME OF TRIAL REGISTER ClinicalTrials.gov; identifier NCT01751685.
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Affiliation(s)
- W B Katzman
- University of California, 1500 Owens Street, San Francisco, CA, 94158, USA.
| | - E Vittinghoff
- University of California, 550 16th. Street, San Francisco, CA, 94158, USA
| | - F Lin
- University of California, 550 16th. Street, San Francisco, CA, 94158, USA
| | - A Schafer
- University of California, 4150 Clement St, San Francisco, CA, 94121, USA
- San Francisco Veterans Affairs Health Care System, 4150 Clement St, San Francisco, CA, 94121, USA
| | - R K Long
- University of California, 550 16th. Street, San Francisco, CA, 94143, USA
| | - S Wong
- University of California, 1500 Owens Street, San Francisco, CA, 94158, USA
| | - A Gladin
- Kaiser Permanente Northern CA, San Francisco Medical Center, 1635 Divisadero Street, Suite 300, San Francisco, CA, 94115, USA
| | - B Fan
- University of California, 400 Parnassus Avenue, San Francisco, CA, 94117, USA
| | - B Allaire
- Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA, 02215, USA
| | - D M Kado
- University of California, 9500 Gilman Dr, La Jolla, CA, 92093, USA
| | - N E Lane
- University of California, 4625 Second Avenue, Suite 2000, Sacramento, CA, 95616, USA
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Parrot D, Oppong-Danquah E, Fan B, Tasdemir D. Molecular Networking for Identification of Enhanced Chemical Inventories of Baltic Marine Fungi. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- D Parrot
- GEOMAR Centre for Marine Biotechnology, Research Unit Marine Natural Product Chemistry, GEOMAR Helmholtz Centre for Ocean Research Kiel, Am Kiel-Kanal 44, Kiel, Germany
| | - E Oppong-Danquah
- GEOMAR Centre for Marine Biotechnology, Research Unit Marine Natural Product Chemistry, GEOMAR Helmholtz Centre for Ocean Research Kiel, Am Kiel-Kanal 44, Kiel, Germany
| | - B Fan
- GEOMAR Centre for Marine Biotechnology, Research Unit Marine Natural Product Chemistry, GEOMAR Helmholtz Centre for Ocean Research Kiel, Am Kiel-Kanal 44, Kiel, Germany
| | - D Tasdemir
- GEOMAR Centre for Marine Biotechnology, Research Unit Marine Natural Product Chemistry, GEOMAR Helmholtz Centre for Ocean Research Kiel, Am Kiel-Kanal 44, Kiel, Germany
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Li X, Yang S, Dong K, Tang Z, Li K, Fan B, Wang Z, Liu B. Identification of positive selection signatures in pigs by comparing linkage disequilibrium variances. Anim Genet 2017; 48:600-605. [DOI: 10.1111/age.12574] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/11/2017] [Indexed: 11/26/2022]
Affiliation(s)
- X. Li
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education; Key Laboratory of Pig Genetics and Breeding of Ministry of Agriculture; Huazhong Agricultural University; Wuhan Hubei 430070 China
- The Cooperative Innovation Center for Sustainable Pig Production; Wuhan Hubei 430070 China
- Department of Agricultural, Food and Nutritional Science; University of Alberta; Edmonton AB T6G 2P5 Canada
| | - S. Yang
- College of Animal Science and Technology; Zhejiang A&F University; Lin'an Zhejiang 311300 China
| | - K. Dong
- The Key Laboratory for Domestic Animal Genetic Resources and Breeding of Ministry of Agriculture of China; Institute of Animal Science; Chinese Academy of Agricultural Sciences; Beijing 100193 China
| | - Z. Tang
- The Key Laboratory for Domestic Animal Genetic Resources and Breeding of Ministry of Agriculture of China; Institute of Animal Science; Chinese Academy of Agricultural Sciences; Beijing 100193 China
| | - K. Li
- The Key Laboratory for Domestic Animal Genetic Resources and Breeding of Ministry of Agriculture of China; Institute of Animal Science; Chinese Academy of Agricultural Sciences; Beijing 100193 China
| | - B. Fan
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education; Key Laboratory of Pig Genetics and Breeding of Ministry of Agriculture; Huazhong Agricultural University; Wuhan Hubei 430070 China
| | - Z. Wang
- Department of Agricultural, Food and Nutritional Science; University of Alberta; Edmonton AB T6G 2P5 Canada
| | - B. Liu
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education; Key Laboratory of Pig Genetics and Breeding of Ministry of Agriculture; Huazhong Agricultural University; Wuhan Hubei 430070 China
- The Cooperative Innovation Center for Sustainable Pig Production; Wuhan Hubei 430070 China
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41
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Cosman F, Krege JH, Looker AC, Schousboe JT, Fan B, Sarafrazi Isfahani N, Shepherd JA, Krohn KD, Steiger P, Wilson KE, Genant HK. Spine fracture prevalence in a nationally representative sample of US women and men aged ≥40 years: results from the National Health and Nutrition Examination Survey (NHANES) 2013-2014. Osteoporos Int 2017; 28:1857-1866. [PMID: 28175980 PMCID: PMC7422504 DOI: 10.1007/s00198-017-3948-9] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 01/26/2017] [Indexed: 12/13/2022]
Abstract
UNLABELLED Spine fracture prevalence is similar in men and women, increasing from <5 % in those <60 to 11 % in those 70-79 and 18 % in those ≥80 years. Prevalence was higher with age, lower bone mineral density (BMD), and in those meeting criteria for spine imaging. Most subjects with spine fractures were unaware of them. INTRODUCTION Spine fractures have substantial medical significance but are seldom recognized. This study collected contemporary nationally representative spine fracture prevalence data. METHODS Cross-sectional analysis of 3330 US adults aged ≥40 years participating in NHANES 2013-2014 with evaluable Vertebral Fracture Assessment (VFA). VFA was graded by semiquantitative measurement. BMD and an osteoporosis questionnaire were collected. RESULTS Overall spine fracture prevalence was 5.4 % and similar in men and women. Prevalence increased with age from <5 % in those <60 to 11 % in those 70-79 and 18 % in those ≥80 years. Fractures were more common in non-Hispanic whites and in people with lower body mass index and BMD. Among subjects with spine fracture, 26 % met BMD criteria for osteoporosis. Prevalence was higher in subjects who met National Osteoporosis Foundation (NOF) criteria for spine imaging (14 vs 4.7 %, P < 0.001). Only 8 % of people with a spine fracture diagnosed by VFA had a self-reported fracture, and among those who self-reported a spine fracture, only 21 % were diagnosed with fracture by VFA. CONCLUSION Spine fracture prevalence is similar in women and men and increases with age and lower BMD, although most subjects with spine fracture do not meet BMD criteria for osteoporosis. Since most (>90 %) individuals were unaware of their spine fractures, lateral spine imaging is needed to identify these women and men. Spine fracture prevalence was threefold higher in individuals meeting NOF criteria for spine imaging (∼1 in 7 undergoing VFA). Identifying spine fractures as part of comprehensive risk assessment may improve clinical decision making.
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Affiliation(s)
- F Cosman
- Regional Bone Center, Helen Hayes Hospital, Route 9W, West Haverstraw, NY, 10993, USA.
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, NY, USA.
| | - J H Krege
- Eli Lilly and Company, Indianapolis, IN, USA
| | - A C Looker
- National Center for Health Statistics, Centers for Disease Control and Prevention, Hyattsville, MD, USA
| | - J T Schousboe
- HealthPartners Institute and Park Nicollet Clinic, HealthPartners, Minneapolis, MN, USA
| | - B Fan
- Department of Radiology, University of California, San Francisco, CA, USA
| | - N Sarafrazi Isfahani
- National Center for Health Statistics, Centers for Disease Control and Prevention, Hyattsville, MD, USA
| | - J A Shepherd
- Department of Radiology, University of California, San Francisco, CA, USA
| | - K D Krohn
- Eli Lilly and Company, Indianapolis, IN, USA
| | - P Steiger
- Parexel International, Waltham, MA, USA
| | | | - H K Genant
- Department of Radiology, University of California, San Francisco, CA, USA
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Looker AC, Sarafrazi Isfahani N, Fan B, Shepherd JA. Trends in osteoporosis and low bone mass in older US adults, 2005-2006 through 2013-2014. Osteoporos Int 2017; 28:1979-1988. [PMID: 28315954 PMCID: PMC7891684 DOI: 10.1007/s00198-017-3996-1] [Citation(s) in RCA: 105] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 02/28/2017] [Indexed: 11/25/2022]
Abstract
This study examined trends in osteoporosis and low bone mass in older US adults between 2005 and 2014 using bone mineral density (BMD) data from the National Health and Nutrition Examination Survey (NHANES). Osteoporosis and low bone mass appear to have increased at the femur neck but not at the lumbar spine during this period. INTRODUCTION Recent preliminary data from Medicare suggest that the decline in hip fracture incidence among older US adults may have plateaued in 2013-2014, but comparable data on BMD trends for this time period are currently lacking. This study examined trends in the prevalence of osteoporosis and low bone mass since 2005 using BMD data from NHANES. The present study also updated prevalence estimates to 2013-2014 and included estimates for non-Hispanic Asians. METHODS Femur neck and lumbar spine BMD by DXA were available for 7954 adults aged 50 years and older from four NHANES survey cycles between 2005-2006 and 2013-2014. RESULTS Significant trends (quadratic or linear) were observed for the femur neck (mean T-score and osteoporosis in both sexes; low bone mass in women) but not for the lumbar spine. The trend in femur neck status was somewhat U-shaped, with prevalences being most consistently significantly higher (by 1.1-6.6 percentage points) in 2013-2014 than 2007-2008. Adjusting for changes in body mass index, smoking, milk intake, and physician's diagnosis of osteoporosis between surveys did not change femur neck trends. In 2013-2014, the percent of older adults with osteoporosis was 6% at the femur neck, 8% at the lumbar spine, and 11% at either site. CONCLUSIONS There was some evidence of a decline in femur neck BMD between 2005-2006 and 2013-2014, but not in lumbar spine BMD. Changes in the risk factors that could be examined did not explain the femur neck BMD trends.
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Affiliation(s)
- A C Looker
- Division of Health and Nutrition Examination Surveys, National Center for Health Statistics, Centers for Disease Control and Prevention, 3311 Toledo Road, Room 3416, Hyattsville, MD, 20782, USA.
| | - N Sarafrazi Isfahani
- Division of Health and Nutrition Examination Surveys, National Center for Health Statistics, Centers for Disease Control and Prevention, 3311 Toledo Road, Room 3416, Hyattsville, MD, 20782, USA
| | - B Fan
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA
| | - J A Shepherd
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA
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Abstract
BACKGROUND Sepsis-induced cardiomyopathy is a well-known cause of mortality. Recent evidence has highlighted the important role of myricetin in anti-inflammation and anti-oxidative stress. However, little is known about its effect on endotoxin-induced cardiomyopathy. We examined the effect of myricetin on lipopolysaccharide (LPS)-induced cardiomyocyte injury and the underlying mechanisms in vitro. METHODS mRNA expression of interleukin (IL)-1beta, IL-6, and tumor necrosis factor (TNF)-alpha was examined via reverse transcription-quantitative polymerase chain reaction (RT-qPCR). Protein expression levels of NF-κB/p65, IκB, IL-1beta, IL-6, and TNF-alpha were assesses via Western blotting. Immunofluorescence (IF) was used to determine the nuclear translocation of p65. Commercial kits were employed to detect the level of oxidative markers and to quantify NF-κB/p65 both in the cytoplasm and the nucleus. Finally, terminal deoxy-nucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) was performed to evaluate the apoptosis of H9c2 cardiomyocytes. RESULTS The results showed that myricetin blunted the overexpression of IL-1beta, IL-6, and TNF-alpha markedly by inhibiting the NF-κB/P65 signaling pathway. Furthermore, myricetin treatment led to the downregulation of reactive oxygen species (ROS) accompanied by increased expression of superoxide dismutase and glutathione peroxidase. TUNEL-positive nuclei were rarely detected following myricetin treatment. CONCLUSION Our findings suggest that myricetin is a valuable protective agent against endotoxin-induced early inflammatory responses in H9c2 cardiomyocytes, which involves regulation of ROS and the IκB/NF-κb signaling pathway.
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Affiliation(s)
- S Chen
- School of Pharmacy, Hubei University of Science and Technology, 437100, Hubei Xianning, China
| | - B Fan
- School of Pharmacy, Hubei University of Science and Technology, 437100, Hubei Xianning, China.
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Fan B, Blom J, Klenk HP, Borriss R. Bacillus amyloliquefaciens, Bacillus velezensis, and Bacillus siamensis Form an "Operational Group B. amyloliquefaciens" within the B. subtilis Species Complex. Front Microbiol 2017; 8:22. [PMID: 28163698 PMCID: PMC5247444 DOI: 10.3389/fmicb.2017.00022] [Citation(s) in RCA: 187] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 01/04/2017] [Indexed: 11/13/2022] Open
Abstract
The plant growth promoting model bacterium FZB42T was proposed as the type strain of Bacillus amyloliquefaciens subsp. plantarum (Borriss et al., 2011), but has been recently recognized as being synonymous to Bacillus velezensis due to phylogenomic analysis (Dunlap C. et al., 2016). However, until now, majority of publications consider plant-associated close relatives of FZB42 still as "B. amyloliquefaciens." Here, we reinvestigated the taxonomic status of FZB42 and related strains in its context to the free-living soil bacterium DSM7T, the type strain of B. amyloliquefaciens. We identified 66 bacterial genomes from the NCBI data bank with high similarity to DSM7T. Dendrograms based on complete rpoB nucleotide sequences and on core genome sequences, respectively, clustered into a clade consisting of three tightly linked branches: (1) B. amyloliquefaciens, (2) Bacillus siamensis, and (3) a conspecific group containing the type strains of B. velezensis, Bacillus methylotrophicus, and B. amyloliquefaciens subsp. plantarum. The three monophyletic clades shared a common mutation rate of 0.01 substitutions per nucleotide position, but were distantly related to Bacillus subtilis (0.1 substitutions per nucleotide position). The tight relatedness of the three clusters was corroborated by TETRA, dDDH, ANI, and AAI analysis of the core genomes, but dDDH and ANI values were found slightly below species level thresholds when B. amyloliquefaciens DSM7T genome sequence was used as query sequence. Due to these results, we propose that the B. amyloliquefaciens clade should be considered as a taxonomic unit above of species level, designated here as "operational group B. amyloliquefaciens" consisting of the soil borne B. amyloliquefaciens, and plant associated B. siamensis and B. velezensis, whose members are closely related and allow identifying changes on the genomic level due to developing the plant-associated life-style.
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Affiliation(s)
- Ben Fan
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University Nanjing, China
| | - Jochen Blom
- Bioinformatics and Systems Biology, Justus-Liebig-Universität Giessen Giessen, Germany
| | | | - Rainer Borriss
- Fachgebiet Phytomedizin, Institut für Agrar- und Gartenbauwissenschaften, Humboldt Universität zu BerlinBerlin, Germany; Nord Reet UGGreifswald, Germany
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Fan B, Yin YS, Sun G, Zhu LY, Liu W, Pi XE, Fei DB, Peng LH, Wang X, Yang YS. [Effects of different carbohydrates on the simulation of human intestinal bacterial flora with in vitro culture]. Zhonghua Nei Ke Za Zhi 2017; 55:381-5. [PMID: 27143189 DOI: 10.3760/cma.j.issn.0578-1426.2016.05.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To investigate the optimal growth condition of human fecal bacterial flora in vitro by comparing the effect of different carbohydrates as cultural media. METHODS Three fecal samples (1, 2, 3) were collected and inoculated into a single-stage chemostat system, in which starch medium (VI) and starch polysaccharide medium(XP) were used. Samples were collected for bacterial genomic DNA extraction and polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) analysis. Bacterial composition and short chain fatty acid (SCFA) were then analyzed. RESULTS The single stage chemostat system reached steady after operating 8 days, when evaluated by the PCR-DGGE. Bacterial 16s rRNA high-throughput sequencing showed that the intestinal bacteria of these three volunteers was mainly composed of four bacterial phyla, namely, Bacteroidetes, Firmicutes, Proteobacteria and Actinobacteria. When the influence of bacterial abundance was considered, the similarity of bacterial composition between the original fecal samples to the harvested flora after culture was 0.847, 0.825, 0.968 in VI medium and 0.927, 0.926, 0.836 in XP medium, respectively. The similarity was decreased to 0.553, 0.580, 0.623 with VI medium and 0.617, 0.520, 0.574 with XP medium, when the number of bacterial species was considered. The variation of host individual also influenced the simulation. VI medium favored fecal sample 3, while XP medium more benefited sample 1 and 2. Bacteroides and Lachnospiraceae_incertae_sedis grew in both VI and XP medium. However, some species were only detected in VI medium and some were specifically found in the XP medium. The SCFA concentration in fermenters was 15-35 mmol/L, mainly propionate and butyrate. CONCLUSIONS The chemostat system works for stimulating human gut bacterial flora in vitro. The bacterial composition is affected by different carbohydrate in the culture medium yet with close simulation higher than 80%.
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Affiliation(s)
| | - Y S Yin
- Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | | | | | | | | | | | | | | | - Y S Yang
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing 100853, China
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Fan B, Li YL, Li L, Peng XJ, Bu C, Wu XQ, Borriss R. Malonylome of the plant growth promoting rhizobacterium with potent biocontrol activity, Bacillus amyloliquefaciens FZB42. Data Brief 2016; 10:548-550. [PMID: 28070544 PMCID: PMC5219606 DOI: 10.1016/j.dib.2016.12.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2016] [Revised: 12/09/2016] [Accepted: 12/14/2016] [Indexed: 01/13/2023] Open
Abstract
The data presented in this article are related to the publication entitled "Malonylome analysis of rhizobacterium Bacillus amyloliquefaciens FZB42 reveals involvement of lysine malonylation in polyketide synthesis and plant-bacteria interactions"(doi:10.1016/j.jprot.2016.11.022) (B. Fan, Y. Li, L. Li et al.) [1]. This article presented the raw information of all malonyllysine sites identified by LC-MS/MS in the Bacillus amyloliquefaciens FZB42. Further, the functional features and conservation of the malonylated peptide/proteins were analyzed and made publicly available to enable critical or extended analyses.
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Affiliation(s)
- Ben Fan
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, 210037 Nanjing, China
| | - Yu-Long Li
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, 210037 Nanjing, China
| | - Lei Li
- RNA Biology Group, Institute for Molecular Infection Biology, University of Würzburg, 97080 Würzburg, Germany
| | - Xiao-Jun Peng
- Jingjie PTM Biolabs (Hangzhou) Co. Ltd., Hangzhou 310018, China
| | - Chen Bu
- Jingjie PTM Biolabs (Hangzhou) Co. Ltd., Hangzhou 310018, China
| | - Xiao-Qin Wu
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, 210037 Nanjing, China
| | - Rainer Borriss
- Fachgebiet Phytomedizin, Albrecht Daniel Thaer Institut für Agrar- und Gartenbauwissenschaften, Lebenswissenschaftliche Fakultät, Humboldt Universität zu Berlin, 14195 Berlin, Germany
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Abstract
The alternative sigma factor D is known to be involved in at least three biological processes in Bacilli: flagellin synthesis, methyl-accepting chemotaxis and autolysin synthesis. Although many Bacillus genes have been identified as SigD regulon, the list may be not be complete. With microarray-based systemic screening, we found a set of genes downregulated in the sigD knockout mutant of the plant growth-promoting rhizobacterium B. amyloliquefaciens subsp. plantarum FZB42. Eight genes (appA, blsA, dhaS, spoVG, yqgA, RBAM_004640, RBAM_018080 and ytk) were further confirmed by quantitative PCR and/or northern blot to be controlled by SigD at the transcriptional level. These genes are hitherto not reported to be controlled by SigD. Among them, four genes are of unknown function and two genes (RBAM_004640 and RBAM_018080), absent in the model strain B. subtilis 168, are unique to B. amyloliquefaciens stains. The eight genes are involved in sporulation, biofilm formation, metabolite transport and several other functions. These findings extend our knowledge of the regulatory network governed by SigD in Bacillus and will further help to decipher the roles of the genes.
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Affiliation(s)
- Ben Fan
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing 210037, China.,Institut für Biologie/Bakteriengenetik, Humboldt Universität zu Berlin, Chausseestrasse 117, Berlin D-10115, Germany
| | - Yu-Long Li
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing 210037, China
| | - Aruljothi Mariappan
- Institut für Biologie/Bakteriengenetik, Humboldt Universität zu Berlin, Chausseestrasse 117, Berlin D-10115, Germany
| | - Anke Becker
- LOEWE Center for Synthetic Microbiology, Marburg an der Lahn, Philipps-Universität Marburg, Marburg 35037, Germany
| | - Xiao-Qin Wu
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing 210037, China
| | - Rainer Borriss
- Institut für Biologie/Bakteriengenetik, Humboldt Universität zu Berlin, Chausseestrasse 117, Berlin D-10115, Germany .,Fachgebiet Phytomedizin, Albrecht Daniel Thaer Institut für Agrar- und Gartenbauwissenschaften, Lebenswissenschaftliche Fakultät, Humboldt Universität zu Berlin, Berlin 14195, Germany
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Fan B, Li YL, Li L, Peng XJ, Bu C, Wu XQ, Borriss R. Malonylome analysis of rhizobacterium Bacillus amyloliquefaciens FZB42 reveals involvement of lysine malonylation in polyketide synthesis and plant-bacteria interactions. J Proteomics 2016; 154:1-12. [PMID: 27939684 DOI: 10.1016/j.jprot.2016.11.022] [Citation(s) in RCA: 29] [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: 09/28/2016] [Revised: 11/24/2016] [Accepted: 11/30/2016] [Indexed: 12/21/2022]
Abstract
Using the combination of affinity enrichment and high-resolution LC-MS/MS analysis, we performed a large-scale lysine malonylation analysis in the model representative of Gram-positive plant growth-promoting rhizobacteria (PGPR), Bacillus amyloliquefaciens FZB42. Altogether, 809 malonyllysine sites in 382 proteins were identified. The bioinformatic analysis revealed that lysine malonylation occurs on the proteins involved in a variety of biological functions including central carbon metabolism, fatty acid biosynthesis and metabolism, NAD(P) binding and translation machinery. A group of proteins known to be implicated in rhizobacterium-plant interaction were also malonylated; especially, the enzymes responsible for antibiotic production including polyketide synthases (PKSs) and nonribosomal peptide synthases (NRPSs) were highly malonylated. Furthermore, our analysis showed malonylation occurred on proteins structure with higher surface accessibility and appeared to be conserved in many bacteria but not in archaea. The results provide us valuable insights into the potential roles of lysine malonylation in governing bacterial metabolism and cellular processes. BIOLOGICAL SIGNIFICANCE Although in mammalian cells some important findings have been discovered that protein malonylation is related to basic metabolism and chronic disease, few studies have been performed on prokaryotic malonylome. In this study, we determined the malonylation profiles of Bacillus amyloliquefaciens FZB42, a model organism of Gram-positive plant growth-promoting rhizobacteria. FZB42 is known for the extensive investigations on its strong ability of producing antimicrobial polyketides and its potent activities of stimulating plant growth. Our analysis shows that malonylation is highly related to the polyketide synthases and the proteins involved bacterial interactions with plants. The results not only provide one of the first malonylomes for exploring the biochemical nature of bacterial proteins, but also shed light on the better understanding of bacterial antibiotic biosynthesis and plant-microbe interaction.
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Affiliation(s)
- Ben Fan
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, 210037 Nanjing, China.
| | - Yu-Long Li
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, 210037 Nanjing, China.
| | - Lei Li
- RNA Biology Group, Institute for Molecular Infection Biology, University of Würzburg, 97080 Würzburg, Germany.
| | - Xiao-Jun Peng
- Jingjie PTM Biolabs (Hangzhou) Co. Ltd., Hangzhou 310018, China.
| | - Chen Bu
- Jingjie PTM Biolabs (Hangzhou) Co. Ltd., Hangzhou 310018, China.
| | - Xiao-Qin Wu
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, 210037 Nanjing, China.
| | - Rainer Borriss
- Fachgebiet Phytomedizin, Albrecht Daniel Thaer Institut für Agrar- und Gartenbauwissenschaften, Lebenswissenschaftliche Fakultät, Humboldt Universität zu Berlin, 14195 Berlin, Germany.
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Che L, Fan B, Pilo MG, Xu Z, Liu Y, Cigliano A, Cossu A, Palmieri G, Pascale RM, Porcu A, Vidili G, Serra M, Dombrowski F, Ribback S, Calvisi DF, Chen X. Jagged 1 is a major Notch ligand along cholangiocarcinoma development in mice and humans. Oncogenesis 2016; 5:e274. [PMID: 27918553 PMCID: PMC5177771 DOI: 10.1038/oncsis.2016.73] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [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: 07/25/2016] [Revised: 09/26/2016] [Accepted: 10/10/2016] [Indexed: 02/07/2023] Open
Abstract
Intrahepatic cholangiocarcinoma (ICC) is a rare yet deadly malignancy with limited treatment options. Activation of the Notch signalling cascade has been implicated in cholangiocarcinogenesis. However, while several studies focused on the Notch receptors required for ICC development, little is known about the upstream inducers responsible for their activation. Here, we show that the Jagged 1 (Jag1) ligand is almost ubiquitously upregulated in human ICC samples when compared with corresponding non-tumorous counterparts. Furthermore, we found that while overexpression of Jag1 alone does not lead to liver tumour development, overexpression of Jag1 synergizes with activated AKT signalling to promote liver carcinogenesis in AKT/Jag1 mice. Histologically, tumours consisted exclusively of ICC, with hepatocellular tumours not occurring in AKT/Jag1 mice. Furthermore, tumours from AKT/Jag1 mice exhibited extensive desmoplastic reaction, an important feature of human ICC. At the molecular level, we found that both AKT/mTOR and Notch cascades are activated in AKT/Jag1 ICC tissues, and that the Notch signalling is necessary for ICC development in AKT/Jag1 mice. In human ICC cell lines, silencing of Jag1 via specific small interfering RNA reduces proliferation and increases apoptosis. Finally, combined inhibition of AKT and Notch pathways is highly detrimental for the in vitro growth of ICC cell lines. In summary, our study demonstrates that Jag1 is an important upstream inducer of the Notch signalling in human and mouse ICC. Targeting Jag1 might represent a novel therapeutic strategy for the treatment of this deadly disease.
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Affiliation(s)
- L Che
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, China.,Department of Bioengineering and Therapeutic Sciences and Liver Center, University of California, San Francisco, CA, USA
| | - B Fan
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, China.,Department of Bioengineering and Therapeutic Sciences and Liver Center, University of California, San Francisco, CA, USA
| | - M G Pilo
- Institute of Pathology, University of Greifswald, Greifswald, Germany
| | - Z Xu
- Department of Bioengineering and Therapeutic Sciences and Liver Center, University of California, San Francisco, CA, USA.,Department of Gastroenterology, Guizhou Provincial People's Hospital, The Affiliated People's Hospital of Guizhou Medical University, Guiyang, China
| | - Y Liu
- Department of Gastroenterology, 307 Hospital of PLA, Beijing, China
| | - A Cigliano
- Institute of Pathology, University of Greifswald, Greifswald, Germany
| | - A Cossu
- Unit of Pathology, Azienda Ospedaliero Universitaria Sassari, Sassari, Italy
| | - G Palmieri
- Institute of Biomolecular Chemistry, National Research Council, Sassari, Italy
| | - R M Pascale
- Department of Clinical and Experimental Medicine, University of Sassari, Sassari, Italy
| | - A Porcu
- Department of Clinical and Experimental Medicine, University of Sassari, Sassari, Italy
| | - G Vidili
- Department of Clinical and Experimental Medicine, University of Sassari, Sassari, Italy
| | - M Serra
- Institute of Pathology, University of Greifswald, Greifswald, Germany
| | - F Dombrowski
- Institute of Pathology, University of Greifswald, Greifswald, Germany
| | - S Ribback
- Institute of Pathology, University of Greifswald, Greifswald, Germany
| | - D F Calvisi
- Institute of Pathology, University of Greifswald, Greifswald, Germany.,Department of Clinical and Experimental Medicine, University of Sassari, Sassari, Italy
| | - X Chen
- Department of Bioengineering and Therapeutic Sciences and Liver Center, University of California, San Francisco, CA, USA
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50
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Hu M, Fan B, Ma J, Xue S, Zhao S, Fu Z, Yu J. FLT Positron Emission Tomography/Computed Tomography for Survival Prediction in Patients With High-Grade Glioma Treated With Postoperative Chemoradiation Therapy. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.853] [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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