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Jiang HY, Jiang ND, Wang L, Guo JJ, Chen KX, Dai YJ. Characterization of nitrilases from Variovorax boronicumulans that functions in insecticide flonicamid degradation and β-cyano-L-alanine detoxification. J Appl Microbiol 2022; 133:311-322. [PMID: 35365856 DOI: 10.1111/jam.15561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 03/04/2022] [Accepted: 03/28/2022] [Indexed: 11/27/2022]
Abstract
AIMS To characterize the functions of nitrilases of Variovorax boronicumulans CGMCC 4969 and evaluate flonicamid (FLO) degradation and β-cyano-L-alanine (Ala(CN)) detoxification by this bacterium. METHODS AND RESULTS V. boronicumulans CGMCC 4969 nitrilases (NitA and NitB) were purified and substrate specificity assay indicated that both of them degraded insecticide FLO to N-(4-trifluoromethylnicotinoyl)glycinamide (TFNG-AM) and 4-(trifluoromethyl)nicotinol glycine (TFNG). Ala(CN), a plant detoxification intermediate, was hydrolyzed by NitB. Escherichia coli overexpressing NitA and NitB degraded 41.2 and 93.8% of FLO (0.87 mmol·L-1 ) within 1 h, with half-lives of 1.30 and 0.25 h, respectively. NitB exhibited the highest nitrilase activity toward FLO. FLO was used as a substrate to compare their enzymatic properties. NitB was more tolerant to acidic conditions and organic solvents than NitA. Conversely, NitA was more tolerant to metal ions than NitB. CGMCC 4969 facilitated FLO degradation in soil and surface water and utilized Ala(CN) as a sole nitrogen source for growth. CONCLUSIONS CGMCC 4969 efficiently degraded FLO mediated by NitA and NitB; NitB was involved in Ala(CN) detoxification. SIGNIFICANCE AND IMPACT OF THE STUDY This study promotes our understanding of versatile functions of nitrilases from CGMCC 4969 that is promising for environmental remediation.
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Affiliation(s)
- H Y Jiang
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, Nanjing, People's Republic of China
| | - N D Jiang
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, Nanjing, People's Republic of China
| | - L Wang
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, Nanjing, People's Republic of China
| | - J J Guo
- Nanjing Normal University Zhongbei College, Zhenjiang, People's Republic of China
| | - K X Chen
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, Nanjing, People's Republic of China
| | - Y J Dai
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, Nanjing, People's Republic of China
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Yang WL, Dai ZL, Cheng X, Fan ZX, Jiang HY, Dai YJ. Biotransformation of insecticide flonicamid by Aminobacter sp. CGMCC 1.17253 via nitrile hydratase catalysed hydration pathway. J Appl Microbiol 2020; 130:1571-1581. [PMID: 33030814 DOI: 10.1111/jam.14880] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 09/10/2020] [Accepted: 09/28/2020] [Indexed: 12/11/2022]
Abstract
AIMS This study evaluates flonicamid biotransformation ability of Aminobacter sp. CGMCC 1.17253 and the enzyme catalytic mechanism involved. METHODS AND RESULTS Flonicamid transformed by resting cells of Aminobacter sp. CGMCC 1.17253 was carried out. Aminobacter sp. CGMCC 1.17253 converts flonicamid into N-(4-trifluoromethylnicotinoyl) glycinamide (TFNG-AM). Aminobacter sp. CGMCC 1.17253 transforms 31·1% of the flonicamid in a 200 mg l-1 conversion solution in 96 h. Aminobacter sp. CGMCC 1.17253 was inoculated in soil, and 72·1% of flonicamid with a concentration of 0·21 μmol g-1 was transformed in 9 days. The recombinant Escherichia coli expressing Aminobacter sp. CGMCC 1.17253 nitrile hydratase (NHase) and purified NHase were tested for the flonicamid transformation ability, both of them acquired the ability to transform flonicamid into TFNG-AM. CONCLUSIONS Aminobacter sp. CGMCC 1.17253 transforms flonicamid into TFNG-AM via hydration pathway mediated by cobalt-containing NHase. SIGNIFICANCE AND IMPACT OF THE STUDY This is the first report that bacteria of genus Aminobacter has flonicamid-transforming ability. This study enhances our understanding of flonicamid-degrading mechanism. Aminobacter sp. CGMCC 1.17253 has the potential for bioremediation of flonicamid pollution.
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Affiliation(s)
- W L Yang
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, Nanjing, People's Republic of China
| | - Z L Dai
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, Nanjing, People's Republic of China
| | - X Cheng
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, Nanjing, People's Republic of China
| | - Z X Fan
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, Nanjing, People's Republic of China
| | - H Y Jiang
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, Nanjing, People's Republic of China
| | - Y J Dai
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, Nanjing, People's Republic of China
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Ni D, Dong Y, Peng JP, Xu Y, Yang MX, Dai YJ. [Effect of different support angles on the fitness of removable partial denture framework fabricated using selective laser melting technique]. Zhonghua Kou Qiang Yi Xue Za Zhi 2020; 55:165-170. [PMID: 32193912 DOI: 10.3760/cma.j.issn.1002-0098.2020.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Objective: To evaluate the fitness of bilateral free-end dentition defect removable partial denture framework fabricated by selective laser melting (SLM) technique with different support angles. Methods: After the control group has been set to eliminate the system error, and according to the standard model of bilateral mandibular posterior teeth loss, eighteen titanium alloy removable partial denture frameworks fabricated by SLM technology were divided into 3 groups with support angles of 0° (horizontal group), 45°(45° group) and 90° (vertical group). Plaster cast with duplicated structure of tissue surface of the removable partial denture (RPD) framework was obtained. A three-dimensional scanner was used to scan original and duplicated plaster casts. The gaps between framework and the model in different parts were analyzed using Geomagic Qualify software to evaluate the fitness of the framework with visual method. Results: The framework fits on the plaster model completely, and its tissue surface fitted on the plaster model well. The deviation between frameworks and plaster casts was calculated as follow: the total deviations of the horizontal, 45°, and vertical group were (0.146±0.017), (0.182±0.015) and (0.185±0.022) mm respectively. The mean deviation of the horizontal group was significantly less than those of the 45° group and the vertical group (P<0.05). Moreover, there was no significant difference in the total deviation between the 45° group and the vertical group. The total deviation of occlusal rest of the horizontal group was significantly less than that of the 45° group (P<0.05). However, no significant difference was detected in the deviation of occlusal rest among the vertical group, the horizontal group, and the 45° group (P>0.05). There was no significant difference in the deviation of occlusal rest among the vertical group, the horizontal group, and the 45° group. The deviation of clasp of the horizontal group was significantly smaller than those of the 45° group and the vertical group (P<0.05). Whereas, there was no significant difference in the deviation of clasp between the 45° group and the 90° group (P>0.05). No significant difference was found in the deviation of lingual bar among the three groups (P>0.05). Conclusions: Among the three kinds of bilateral free-end dentition defect RPD framework fabricated by SLM in different support angles, horizontal printing was proved to reach the minimal deviation, even though the fitness of all three kinds of frameworks can fullfil clinical requirements according to previous studies.
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Affiliation(s)
- D Ni
- Department of Prosthodontics, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Y Dong
- Department of Prosthodontics, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - J P Peng
- Shanghai Reborn Medical Technology Co., Ltd, Shanghai 201112, China
| | - Y Xu
- Department of Prosthodontics, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - M X Yang
- Department of Prosthodontics, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Y J Dai
- Department of Prosthodontics, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
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Yao HH, Tang SM, Wang ZM, Zhang X, Chen XY, Gao L, Liu J, Dai YJ, Hu ZH, Zhang XW, Li ZG. [Study of bone mineral density and serum bone turnover markers in newly diagnosed systemic lupus erythematosus patients]. Beijing Da Xue Xue Bao Yi Xue Ban 2018; 50:998-1003. [PMID: 30562771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
OBJECTIVE To investigate the changes of bone mineral density (BMD) and serum bone turnover factor in newly diagnosed systemic lupus erythematous (SLE) patients. METHODS Eighty newly diagnosed SLE patients and 80 age and gender matched healthy controls were enrolled. None of the SLE patients had ever received glucocorticoid, immunosuppressive agents or vitamin D. BMD was measured at radius,lumbar spine and hip by dual X ray absorptiometry (DXA). Bone turnover markers including serum levels of tartrate-resistant acid phosphatase 5b (TRAP5b),bone alkaline phosphatase (BAP) and 25-hydroxy vitamin D3 (25-OH-VD3) were measured by enzyme-linked immunosorbent assay (ELISA). Logistic regression was employed to analyze the risk factors associated with decreased BMD. RESULTS Mean age of the SLE patients was (32.8±12.4) years, and 85% were female, none of whom were post-menopausal. BMD was significantly reduced in all the measured sites, compared with the healthy controls. Sixteen (20%) of the patients were osteopenic in at least one site measured locations. The serum levels of 25-OH-VD3 were markedly reduced in the newly diagnosed SLE patients than those of the normal controls [(46.1+12.3) nmol/L vs. (25.4+11.2) nmol/L, P<0.001)]. The serum levels of 25-OH-VD3 in the SLE patients with nephritis were much lower than those without nephritis (P=0.04). A significant negative correlation was demonstrated between the serum concentration of 25-OH-VD3 and the disease activity scores as measured by SLE disease activity index (SLEDAI) (r=-0.3,P=0.001). The serum TRAP5b concentration was positively correlated with SLEDAI (r=0.435,P=0.003). Age (P=0.058) and SLEDAI (P=0.085) were probably associated with decreased BMD in Logistic regression analysis. CONCLUSION The study showed reduced BMD in untreated SLE patients. The role of chronic inflammation was of probable importance in bone metabolism.
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Affiliation(s)
- H H Yao
- Department of Rheumatology and Immunology, Peking University People's Hospital,Beijing 100044, China
| | - S M Tang
- Department of Rheumatology and Immunology, Peking University People's Hospital,Beijing 100044, China
| | - Z M Wang
- Department of Rheumatology and Immunology, Peking University People's Hospital,Beijing 100044, China
| | - X Zhang
- Department of Rheumatology and Immunology, Peking University People's Hospital,Beijing 100044, China
| | - X Y Chen
- Department of Rheumatology and Immunology, Peking University People's Hospital,Beijing 100044, China
| | - L Gao
- Department of Rheumatology and Immunology, Peking University People's Hospital,Beijing 100044, China
| | - J Liu
- Department of Rheumatology and Immunology, Peking University People's Hospital,Beijing 100044, China
| | - Y J Dai
- Department of Rheumatology and Immunology, Peking University People's Hospital,Beijing 100044, China
| | - Z H Hu
- Department of Endocrinology, Peking University People's Hospital,Beijing 100044, China
| | - X W Zhang
- Department of Rheumatology and Immunology, Peking University People's Hospital,Beijing 100044, China
| | - Z G Li
- Department of Rheumatology and Immunology, Peking University People's Hospital,Beijing 100044, China
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Dai YJ, Hui KM, Zhang YH, Liu Y, Wang YQ, Zhao LJ, Lin L, Chai LQ, Wei S, Lan JF. Three STATs are involved in the regulation of the expression of antimicrobial peptides in the triangle sail mussel, Hyriopsis cumingii. Fish Shellfish Immunol 2017; 63:181-188. [PMID: 28214598 DOI: 10.1016/j.fsi.2017.02.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 02/06/2017] [Accepted: 02/10/2017] [Indexed: 05/25/2023]
Abstract
Janus kinase (Jak) and signal transducers and activators of transcription (STAT) signaling pathway is associated in antiviral and antibacterial immune response. Previous studies primarily investigated the function of STATs in mammals. For most invertebrates, only one STAT was found in each species, such as STAT92E was found in Drosophila melanogaster. The studies, which focus on the functional difference between various STATs in the same species of invertebrate, are limited. In the present study, three STATs (HcSTAT1, HcSTAT2 and HcSTAT3) were identified in triangle shell pearl mussel, Hyriopsis cumingii. Phylogenetic analysis showed that HcSTAT1 and HcSTAT3 were clustered with Homo sapiens STAT5, and HcSTAT2 was clustered with Pinctada fucata STAT and Crassostea gigas STAT6. All three STATs could be detected in all tested tissues (hemocytes, hepatopancreas, gill, mantle and foot), and were induced expression when challenged with Staphylococcus aureus or Aeromonas hydrophilia in hemocytes and hepatopancreas. HcSTAT1 regulated the expression of HcDef, HcWAP, HcThe and HcTNF. The expression of HcWAP and HcTNF was down-regulated in HcSTAT2-RNAi mussel. And HcSTAT3 affected the expression of HcTNF. The study is the first report of different functions in antibacterial immune responses between STATs in mollusks.
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Affiliation(s)
- Yun-Jia Dai
- State Key Laboratory of Cotton Biology, School of Life Sciences Henan University, Kaifeng 475004, China; Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
| | - Kai-Min Hui
- Jiangsu Key Laboratory for Biodiversity & Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal University, Nanjing 210046, China
| | - Ying-Hao Zhang
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
| | - Yan Liu
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
| | - Yu-Qing Wang
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
| | - Li-Juan Zhao
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; Guangzhou Key Laboratory of Aquatic Animal Diseases and Waterfowl Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong 510225, China
| | - Li Lin
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; Guangzhou Key Laboratory of Aquatic Animal Diseases and Waterfowl Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong 510225, China
| | - Lian-Qin Chai
- State Key Laboratory of Cotton Biology, School of Life Sciences Henan University, Kaifeng 475004, China.
| | - Shun Wei
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China.
| | - Jiang-Feng Lan
- State Key Laboratory of Cotton Biology, School of Life Sciences Henan University, Kaifeng 475004, China; Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Fishery Drug Development, Ministry of Agriculture, Key Laboratory of Aquatic Animal Immune Technology, Guangzhou 510380, China.
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Dai YJ, Wang YQ, Zhang YH, Liu Y, Li JQ, Wei S, Zhao LJ, Zhou YC, Lin L, Lan JF. The role of ficolin-like protein (PcFLP1) in the antibacterial immunity of red swamp crayfish (Procambarus clarkii). Mol Immunol 2017; 81:26-34. [PMID: 27888717 DOI: 10.1016/j.molimm.2016.11.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 11/14/2016] [Accepted: 11/18/2016] [Indexed: 01/04/2023]
Abstract
In invertebrates, ficolin-like proteins (FLPs) play important roles in innate immunity against pathogens. Previous studies primarily investigated the functions of FLPs in immune recognition, activation, and regulation. However, limited research has examined the functions of FLPs as immune effectors. In this work, a ficolin-like protein was identified in red swam crayfish (Procambarus clarkii) and designated as PcFLP1. Quantitative RT-PCR and western blot were employed to analyze the distribution and expression profiles of PcFLP1 in the tissues of the crayfish. The results indicated that PcFLP1 was present in all tested tissues, including hemocytes, heart, hepatopancreas, gill, stomach, and mid-intestine. The expression level of PcFLP1 was up-regulated in hemocytes, hepatopancreas and mid-intestines of the crayfish challenged with Vibrio parahaemolyticus. Further study demonstrated that PcFLP1 could protect the hepatopancreatic cells of crayfish from V. parahaemolyticus infection. The recombinant PcFLP1 enhanced bacterial elimination in crayfish, whereas the antibacterial action was inhibited after PcFLP1 was knocked down. Furthermore, PcFLP1 could bound to bacteria and inhibited bacterial replication. These results demonstrated that PcFLP1 plays an important role in the anti-Vibrio immunity of red swamp crayfish.
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Affiliation(s)
- Yun-Jia Dai
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Yu-Qing Wang
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Ying-Hao Zhang
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Yan Liu
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Jin-Quan Li
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Shun Wei
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Li-Juan Zhao
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Yong-Can Zhou
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, College of Marine Science, Hainan University, Haikou 570228, China
| | - Li Lin
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China; State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, College of Marine Science, Hainan University, Haikou 570228, China.
| | - Jiang-Feng Lan
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China.
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Lan JF, Wei S, Wang YQ, Dai YJ, Tu JG, Zhao LJ, Li XC, Qin QW, Chen N, Lin L. PcToll3 was involved in anti-Vibrio response by regulating the expression of antimicrobial peptides in red swamp crayfish, Procambarus clarkii. Fish Shellfish Immunol 2016; 57:17-24. [PMID: 27531577 DOI: 10.1016/j.fsi.2016.08.021] [Citation(s) in RCA: 6] [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] [Received: 04/27/2016] [Revised: 08/10/2016] [Accepted: 08/11/2016] [Indexed: 06/06/2023]
Abstract
Tolls and Toll-like receptors (TLRs) play an important role in host immune defenses by regulating the expression of antimicrobial peptides (AMPs) and cytokines, but the functional differences of crustacean Tolls from Drosophila Tolls or Mammal TLRs are largely unknown. A novel Toll receptor, named PcToll3, was identified from red swamp crayfish, Procambarus clarkii. It was widely expressed in all detected tissues, and its transcript in hemocytes was up-regulated at 12 h after Vibrio parahemolyticus (Vibrio) injection or at 24 h post white spot syndrome virus (WSSV) challenge. After knockdown of PcToll3, the activity of bacterial clearance was inhibited, and the expression levels of AMPs including Crustin1 (Cru1), Anti-lippopolysaccharide factor 1 (ALF1), and Lysozymes1 (Lys1), which could be up-regulated by Vibrio, were all affected. Meanwhile, PcToll3 silencing influenced the expression of myeloid differentiation factor 88 (PcMyd88), tumor necrosis factor-associated factor 6 (PcTRAF6), and PcDorsal, which were the counterparts of Drosophila Toll signaling pathway. Interestingly, PcToll3 silencing inhibited translocation of PcDorsal from cytoplasm to nucleus. Furthermore, the knockdown of PcDorsal also impaired the expression of AMPs after Vibrio challenge. Hence, we concluded that, besides participating in antiviral immunity, PcToll3 might also regulate the expression of Cru1 and Lys1 to participate in anti-Vibrio immune responses by promoting PcDorsal translocation into nucleus.
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Affiliation(s)
- Jiang-Feng Lan
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Shun Wei
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Yu-Qing Wang
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Yun-Jia Dai
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Jia-Gang Tu
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Li-Juan Zhao
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Xin-Cang Li
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
| | - Qi-Wei Qin
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Nan Chen
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China.
| | - Li Lin
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China; College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China.
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Zhao LL, Wang YQ, Dai YJ, Zhao LJ, Qin Q, Lin L, Ren Q, Lan JF. A novel C-type lectin with four CRDs is involved in the regulation of antimicrobial peptide gene expression in Hyriopsis cumingii. Fish Shellfish Immunol 2016; 55:339-347. [PMID: 27288254 DOI: 10.1016/j.fsi.2016.06.007] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 05/29/2016] [Accepted: 06/06/2016] [Indexed: 06/06/2023]
Abstract
C-type lectins (CTLs) are found in a wide number of invertebrates, and have been reported to participate in immune responses, such as the activation of prophenoloxidase, cell adhesion, bacterial clearance and phagocytosis. Previous studies on CTLs focused on the function of their carbohydrate recognition domains (CRDs). Currently, studies on lectins with multi-CRDs are limited. In this study, a lectin with four CRDs was cloned from Hyriopsis cumingii, and called HcLec4. HcLec4 was widely distributed in several tissues and was significantly down-regulated at the early stage (2 h) of bacterial infection. We further analyzed the bacteria and carbohydrate binding activities of HcLec4. The results showed that HcLec4 could bind to several bacteria, lipopolysaccharide (LPS) and peptidoglycan (PGN). In HcLec4 knockdown mussels, the bacterial clearance rate was increased, and the expression level of antimicrobial peptides (AMPs) was up-regulated. This study reveals that HcLec4 exerts its antibacterial effect by regulating the expression of AMPs at the early stage of bacterial infection.
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Affiliation(s)
- Ling-Ling Zhao
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, PR China; Jiangsu Key Laboratory for Biodiversity & Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210046, PR China
| | - Yu-Qing Wang
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, PR China
| | - Yun-Jia Dai
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, PR China
| | - Li-Juan Zhao
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, PR China
| | - Qiwei Qin
- College of Marine Sciences, South China Normal University, Guangzhou, 510642, PR China
| | - Li Lin
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, PR China
| | - Qian Ren
- Jiangsu Key Laboratory for Biodiversity & Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210046, PR China.
| | - Jiang-Feng Lan
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, PR China.
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Xu BH, Zhong L, Liu QL, Xiao TY, Su JM, Chen KJ, Wang HQ, Dai YJ, Chen J. Characterization of grass carp spleen transcriptome during GCRV infection. Genet Mol Res 2016; 15:gmr6650. [PMID: 27173223 DOI: 10.4238/gmr.15026650] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The aim of the study was to investigate the grass carp hemorrhagic infection pathway and its key-related genes. Grass carp reovirus (GCRV) might cause hemorrhagic disease in grass carps. Healthy grass carp fingerlings (N = 60) were divided into control and infected groups. Fish in the control group were intraperitoneally (ip) injected with 0.6% fish physiological saline; the infected group received 5,000,000 50% tissue culture infective doses of GCRV 873 standard strain, a double-stranded RNA (dsRNA) virus strain, ip, in 0.5 mL. Illumina HiSeqTM 2000 was used for transcriptome sequencing, and real-time polymerase chain reaction (PCR) used to detect complement factors II (C2), III (C3), and V (C5); profibrinolysin (PLG); and coagulation factor II (F2) expression. A total of 2,722,223 reads were detected in the control group, and 2,751,111 in the infected group. Among 11,023 unigenes obtained after transcriptome assembly, 10,021 unigenes were significantly differentially expressed. Gene ontology and KEGG analysis, a collection of databases dealing with genomes and biological pathways, were performed to classify unigenes into functional categories, to understand gene function and identify regulatory pathways. Real-time PCR analysis showed that C2, C3, C5, PLG, and F2 expression levels were down-regulated, confirming results of pathway-enrichment analysis. This is the first application of high-throughput sequencing technology to investigate the in vivo effects of GCRV, on genes and pathways involved in the immune response to infection in grass carp.
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Affiliation(s)
- B H Xu
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
| | - L Zhong
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
| | - Q L Liu
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
| | - T Y Xiao
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
| | - J M Su
- College of Animal Veterinary and Medicine, Hunan Agricultural University, Changsha, China
| | - K J Chen
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
| | - H Q Wang
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
| | - Y J Dai
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
| | - J Chen
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
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Wang Z, Chen YH, Dai YJ, Tan JM, Huang Y, Lan JF, Ren Q. A novel vertebrates Toll-like receptor counterpart regulating the anti-microbial peptides expression in the freshwater crayfish, Procambarus clarkii. Fish Shellfish Immunol 2015; 43:219-229. [PMID: 25573502 DOI: 10.1016/j.fsi.2014.12.038] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [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: 09/02/2014] [Revised: 12/24/2014] [Accepted: 12/27/2014] [Indexed: 06/04/2023]
Abstract
Toll-like receptors (TLRs) play an important role in regulation of anti-microbial peptides (AMPs) expression. A novel vertebrates TLR counterpart named PcToll, was firstly identified from the freshwater crayfish, Procambarus clarkii. Phylogenetic analysis showed that PcToll together with Drosophila melanogaster and Anopheles gambiae Toll9 were clustered with human Tolls. PcToll was mainly expressed in hepatopancreas and gills and it also could be detected in hemocytes, heart, stomach and intestine. PcToll was upregulated in hemocytes and gills post 24 h Vibrio anguillarum challenge. In hepatopancreas and intestine, the highest expression level of PcToll could be observed at 12 h V. anguillarum challenge. In hemocytes, PcToll went up post 24 h Staphylococcus aureus challenge and in gills, the expression level of PcToll showed no obvious change from 2 to 24 h S. aureus challenge. In hepatopancreas post 12 h S. aureus challenge, PcToll was upregulated and it showed obvious upregulation post 12 h S. aureus challenge in intestine. RNAi results showed that PcToll was involved in regulation of crustins (Cru1, Cru2), anti-lipopolysaccharide factor 2 (ALF2) and lysozyme 1 (Lys1) expression. Overexpression of PcToll in Drosophila S2 cells could induce Drosophila Attacin (Atta), Metchnikowin (Mtk), Drosomycin (Drs) and shrimp Penaeidin (PEN4) expression. From the results, it could be speculated that PcToll might play important roles in crayfish innate immune defense.
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Affiliation(s)
- Zheng Wang
- Jiangsu Key Laboratory for Biodiversity & Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210046, PR China
| | - Yi-Hong Chen
- MOE Key Laboratory of Aquatic Product Safety/State Key Laboratory of Biocontrol, School of Marine Sciences, Sun Yat-sen University, Guangzhou, PR China
| | - Yun-Jia Dai
- College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei 430070, PR China
| | - Jing-Min Tan
- Jiangsu Key Laboratory for Biodiversity & Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210046, PR China
| | - Ying Huang
- Jiangsu Key Laboratory for Biodiversity & Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210046, PR China
| | - Jiang-Feng Lan
- College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei 430070, PR China
| | - Qian Ren
- Jiangsu Key Laboratory for Biodiversity & Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210046, PR China.
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Li YN, Hu FL, Dai YJ, Li R, Ma XX, Du Y, Feng M, Jia Y, Zhang CF, Zhu L, Ascherman DP, Li ZG. Serum anti-lipocalin 2 IgG is a novel biomarker in the diagnosis of systemic lupus erythematosus. Lupus 2014; 23:868-75. [PMID: 24704774 DOI: 10.1177/0961203314530484] [Citation(s) in RCA: 13] [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: 07/22/2013] [Accepted: 03/11/2014] [Indexed: 11/17/2022]
Abstract
BACKGROUND Previous work suggests that lipocalin 2 is involved in the pathogenesis of systemic lupus erythematosus (SLE) and that this novel antigen could serve as a high-quality renal biomarker of acute kidney injury in SLE. However, serum lipocalin 2 antibody levels remain unclear. We have therefore undertaken this study to assess the level of serum IgG antibody against lipocalin 2 in different disease states and to evaluate the diagnostic value of this potential biomarker in SLE. METHODS Serum levels of anti-lipocalin IgG antibodies were measured by ELISA in 103 SLE patients, 93 rheumatoid arthritis (RA) patients, 29 primary Sjögren's syndrome (pSS) patients, 13 systemic sclerosis (SSc) patients, and 91 healthy controls. Diagnostic properties of anti-lipocalin IgG were determined by receiver-operating characteristic (ROC) curve analysis. RESULTS The level of serum anti-lipocalin IgG in patients with SLE was significantly higher than in patients with RA, pSS, SSc, or healthy controls (p < 0.05), effectively distinguishing SLE from other conditions with high sensitivity and specificity (49.5% and 90.7%, respectively). In ROC curve analysis, the area under the curve (AUC) is 0.783, with a 95% confidence interval (CI) extending from 0.729 to 0.839. Anti-lipocalin antibodies were present in 48.1% of anti-Sm-negative SLE patients, and also occurred in SLE patients lacking anti-dsDNA (52%) or anti-nucleosome antibodies (46.3%) antibodies. Finally, SLE patients with positive anti-lipocalin IgG possessed higher levels of IgA and CRP than the negative group (p < 0.05), clearly demonstrating a positive correlation between anti-lipocalin IgG and these laboratory parameters. CONCLUSIONS Anti-lipocalin 2 IgG is a promising biomarker for the diagnosis of SLE, particularly when obtained in conjunction with anti-Sm, anti-dsDNA, and anti-nucleosome antibody levels.
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Affiliation(s)
- Y N Li
- Department of Rheumatology & Immunology, Peking University People's Hospital, Beijing, China
| | - F L Hu
- Department of Rheumatology & Immunology, Peking University People's Hospital, Beijing, China
| | - Y J Dai
- Department of Rheumatology & Immunology, Peking University People's Hospital, Beijing, China
| | - R Li
- Department of Rheumatology & Immunology, Peking University People's Hospital, Beijing, China
| | - X X Ma
- Department of Rheumatology & Immunology, Peking University People's Hospital, Beijing, China
| | - Y Du
- Department of Rheumatology & Immunology, Peking University People's Hospital, Beijing, China
| | - M Feng
- Department of Rheumatology & Immunology, Peking University People's Hospital, Beijing, China
| | - Y Jia
- Department of Rheumatology & Immunology, Peking University People's Hospital, Beijing, China
| | - C F Zhang
- Clinical Epidemiology & Biostatistics, Peking University People's Hospital, Beijing, China
| | - L Zhu
- Department of Rheumatology & Immunology, Peking University People's Hospital, Beijing, China
| | - D P Ascherman
- Department of Medicine, Division of Rheumatology, University of Miami Miller School of Medicine, USA
| | - Z G Li
- Department of Rheumatology & Immunology, Peking University People's Hospital, Beijing, China
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Han YM, Wang RZ, Dai YJ, Xiong AH. Studies on the light permeance characteristic of a Fresnel lens group applied in high concentration solar energy. ACTA ACUST UNITED AC 2007. [DOI: 10.1088/1464-4258/9/11/004] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Abstract
Rubbery ormosil films with immobilized aminofluorescein (AF) were investigated to develop an optochemical sensor for the determination of ammonia in water. The gel precursors with tetramethoxysilane (TMOS) and dimethyldimethoxysilane (DiMeDMOS) were deposited on glass supports, and characterized in terms of response to pH, and to dissolved ammonia at constant pH. After preconditioning the sensing film was stable for 6 months. The detection limit for ammonia in water was 0.2 microg mL(-1) (S/N 2), the response being linearly dependent on concentration in the range of 0.5 to 80 microg mL(-1) ammonia. The response time was less than 5 min. The effects of sodium chloride concentration, temperature, and coexisting metal ions and compounds were investigated.
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Affiliation(s)
- X Chen
- Department of Chemistry, Xiamen University, China.
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Chu XM, Rui JZ, Zhou YG, Dai YJ, Cai WM, Ling SS. [Analysis of population pharmacokinetics with NONMEM in clinical patients treated with amikacin by intravenous infusion]. Yao Xue Xue Bao 1998; 31:881-5. [PMID: 9863218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Clinical data (n = 275) collected from 52 patients with respiratory tract infection receiving amikacin (AMK) by intravenous infusion were analysed with NONMEM, a computer program designed for estimating population pharmacokinetic parameters. Concentrations of AMK in serum were determined by fluorescence polarization immunoassay (FPIA). A two compartment open model was used for analysing AMK population pharmacokinetics. The influence of body weight (BW), creatinine clearance (CC), administration history (HIS) and state of pathology (chronic obstructional pulmonary disease, COPD) on pharmacokinetics was investigated. The pharmacokinetic parameters of AMK were shown to be influenced by creatinine clearance (CC) and COPD.
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Affiliation(s)
- X M Chu
- Department of Clinical Pharmacology, General Hospital of Armed Forces, Nanjing
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