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Xu HY, Li RY, Yang ZQ, Qiu JF, Su YB, Lin CSK, Yang WD, Li HY, Zheng JW, Wang X. Continuous selenite biotransformation and biofuel production by marine diatom in the presence of fulvic acid. Bioresour Technol 2024; 401:130708. [PMID: 38636878 DOI: 10.1016/j.biortech.2024.130708] [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: 02/05/2024] [Revised: 03/26/2024] [Accepted: 04/15/2024] [Indexed: 04/20/2024]
Abstract
In this study, the biochemical response of Phaeodactylum tricornutum to varying concentrations of inorganic selenium (Se) was investigated. It was observed that, when combined with fulvic acid, P. tricornutum exhibited enhanced uptake and biotransformation of inorganic Se, as well as increased microalgal lipid biosynthesis. Notably, when subjected to moderate (5 and 10 mg/L) and high (20 and 40 mg/L) concentrations of selenite under fulvic acid treatment, there was a discernible redirection of carbon flux towards lipogenesis and protein biosynthesis from carbohydrates. In addition, the key parameters of microalgae-based biofuels aligned with the necessary criteria outlined in biofuel regulations. Furthermore, the Se removal capabilities of P. tricornutum, assisted by fulvic acid, were coupled with the accumulation of substantial amounts of organic Se, specifically SeCys. These findings present a viable and successful approach to establish a microalgae-based system for Se uptake and biotransformation.
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Affiliation(s)
- Hui-Ying Xu
- Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Ruo-Yu Li
- Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Zi-Qiang Yang
- Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, College of Life Science and Technology, Jinan University, Guangzhou 510632, China; Department of Cell Biology & Institute of Biomedicine National Engineering Research Center of Genetic Medicine, MOE Key Laboratory of Tumor Molecular Biology, Guangdong Provincial Key Laboratory of Bioengineering Medicine, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Jia-Fan Qiu
- Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Yu-Bin Su
- Department of Cell Biology & Institute of Biomedicine National Engineering Research Center of Genetic Medicine, MOE Key Laboratory of Tumor Molecular Biology, Guangdong Provincial Key Laboratory of Bioengineering Medicine, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Carol Sze Ki Lin
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR, China
| | - Wei-Dong Yang
- Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Hong-Ye Li
- Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Jian-Wei Zheng
- Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, College of Life Science and Technology, Jinan University, Guangzhou 510632, China; College of Food Science and Engineering, Foshan University, Foshan 528231, China.
| | - Xiang Wang
- Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, College of Life Science and Technology, Jinan University, Guangzhou 510632, China.
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Li L, Zhang M, Dong RF, Su YB, Ding Y. [Detection of MDM2 gene amplification by fluorescence in situ hybridization and its diagnostic value in low-grade osteosarcoma]. Zhonghua Bing Li Xue Za Zhi 2024; 53:237-242. [PMID: 38433050 DOI: 10.3760/cma.j.cn112151-20231014-00263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/05/2024]
Abstract
Objective: To investigate the diagnostic value of detecting MDM2 gene amplification by fluorescence in situ hybridization (FISH) in low-grade osteosarcoma (LGOS). Methods: Thirty cases of parosteal osteosarcoma (POS) and 14 cases of low-grade central osteosarcoma (LGCOS) from April 2009 to August 2022 at Beijing Jishuitan Hospital, Capital Medical University were analyzed for the presence of MDM2 gene amplification by FISH. Fifty-eight additional cases were used as negative controls (including 28 cases of fibrous dysplasia, 5 cases of giant cell tumor, 4 cases of conventional osteosarcoma, 2 cases each of periosteal osteosarcoma, reparative changes after fracture, pleomorphic undifferentiated sarcoma, low grade myofibroblastic sarcoma, fibrous dysplasia with malignant transformation, one case each of leiomyosarcoma, sclerosing epithelioid fibrosarcoma, malignant peripheral nerve sheath tumor, desmoplastic fibroma of bone, solitary fibrous tumor, aneurysmal bone cyst, clear cell chondrosarcoma, osteofibrous dysplasia, and 3 cases of unclassified spindle cell tumor). Results: Among the 30 patients with POS, 15 were male and 15 were female, ranging in age from 10 to 59 years (mean 35 years, median 30.5 years). Among the 14 patients with LGCOS, four were male and 10 were female, ranging in age from 15 to 56 years (mean 37 years, median 36 years). All except one case were successfully detected by FISH. MDM2 gene amplification was detected in 27 cases of POS (27/29,91.3%) and 8 cases of LGCOS (8/14). All the negative controls were negative for MDM2 gene amplification. The positive rate of MDM2 gene amplification was significantly different between the case group and the control group (P<0.05). The sensitivity and specificity of MDM2 gene amplification in diagnosing POS and LGCOS were 91.3% and 100.0%; and 57.1% and 100.0%, respectively. The sensitivity and specificity of MDM2 gene amplification in diagnosing LGOS (including POS and LGCOS) were 81.3% and 100.0%, respectively. In cases where MDM2 gene was amplified, the MDM2 amplified signal was clustered. Nine cases showed increased CEP12 signal different from polyploidy which was displayed as small and weak signal points or cloud flocculent and cluster signals. Conclusions: Detection of MDM2 gene amplification by FISH is a highly sensitive and specific marker for LGOS. The interpretation criteria for FISH detection of MDM2 amplification are currently not unified. The signal characteristics need more attention when interpreting.
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Affiliation(s)
- L Li
- Department of Pathology, Beijing Jishuitan Hospital, Capital Medical University, Beijing 100035, China
| | - M Zhang
- Department of Pathology, Beijing Jishuitan Hospital, Capital Medical University, Beijing 100035, China
| | - R F Dong
- Department of Pathology, Beijing Jishuitan Hospital, Capital Medical University, Beijing 100035, China
| | - Y B Su
- Department of Radiology, Beijing Jishuitan Hospital, Capital Medical University, Beijing 100035, China
| | - Y Ding
- Department of Pathology, Beijing Jishuitan Hospital, Capital Medical University, Beijing 100035, China
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Gong LH, Su YB, Fu G, Sun XQ, Ding Y. [Pediatric myofibroma/myofibromatosis of the soft tissue and bone: a clinicopathological analysis of 28 cases]. Zhonghua Bing Li Xue Za Zhi 2023; 52:147-152. [PMID: 36748135 DOI: 10.3760/cma.j.cn112151-20221017-00856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Objective: To investigate the clinicopathological features, diagnosis and differential diagnosis of pediatric myofibroma/myofibromatosis of the soft tissue and bone. Methods: All cases of pediatric myofibroma/myofibromatosis of the soft tissue and bone diagnosed between January 2011 and December 2018 were retrieved from the surgical pathology records in the Department of Pathology, Beijing Jishuitan Hospital, Beijing, China. Clinical and radiological data were collected. H&E and immunohistochemistry were used to examine histological and immunophenotypic features and to make the diagnosis and differential diagnosis. The relevant literature was also reviewed. Results: Twenty-eight cases of pediatric myofibroma/myofibromatosis of the soft tissue and bone were respectively collected. The patients' ages ranged from 2 months to 14 years, with a mean age of 7 years. There were 7 females and 21 males. There were 12 cases located in soft tissue, including the finger (n=9), upper arm (n=1) and foot (n=2). There were 14 cases located in the bone of limb, including the femur (n=8), tibia (n=4), clavicle (n=2), fibula (n=2) and radius (n=1). There were 2 cases of myofibromatosis involving multiple bones. Radiology showed lytic lesions in the bone. The proliferation of spindle-shaped myofibroblasts arranged in fascicles with indistinct eosinophilic cytoplasm and bland nuclei, with no pleomorphism and cytological atypia. The characteristic histologic structure was the biphasic nodular growth pattern with cellular and paucicellular regions. The tumors might arrange in a hemangiopericytoma-like pattern. The stroma varied between dense fibrosis and myxoid changes. The reactive new bone formation and inflammatory cell infiltration also existed. Immunohistochemical study showed that the SMA was positive. The surgical resections were performed. One of the patients had tumor recurrence as a result of 11-month follow-up. Conclusions: The pediatric myofibroma/myofibromatosis of the soft tissue and bone is a very rare benign tumor and has a good prognosis. It has a characteristic morphology and its differential diagnosis from other spindle cell tumors could be made with the immunohistochemical analysis.
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Affiliation(s)
- L H Gong
- Department of Pathology, Beijing Jishuitan Hospital, the Fourth Medical College of Peking University, Beijing 100035, China
| | - Y B Su
- Department of Radiology, Beijing Jishuitan Hospital, the Fourth Medical College of Peking University, Beijing 100035, China
| | - G Fu
- Department of Pediatric Orthopaedics, Beijing Jishuitan Hospital, the Fourth Medical College of Peking University, Beijing 100035, China
| | - X Q Sun
- Department of Pathology, Beijing Jishuitan Hospital, the Fourth Medical College of Peking University, Beijing 100035, China
| | - Y Ding
- Department of Pathology, Beijing Jishuitan Hospital, the Fourth Medical College of Peking University, Beijing 100035, China
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Fei J, Wang YS, Cheng H, Su YB, Zhong YJ, Zheng L. The Kandelia obovata transcription factor KoWRKY40 enhances cold tolerance in transgenic Arabidopsis. BMC Plant Biol 2022; 22:274. [PMID: 35659253 PMCID: PMC9166612 DOI: 10.1186/s12870-022-03661-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 05/27/2022] [Indexed: 05/16/2023]
Abstract
BACKGROUND WRKY transcription factors play key roles in plant development processes and stress response. Kandelia obovata is the most cold-resistant species of mangrove plants, which are the important contributors to coastal marine environment. However, there is little known about the WRKY genes in K. obovata. RESULTS In this study, a WRKY transcription factor gene, named KoWRKY40, was identified from mangrove plant K. obovata. The full-length cDNA of KoWRKY40 gene was 1420 nucleotide bases, which encoded 318 amino acids. The KoWRKY40 protein contained a typical WRKY domain and a C2H2 zinc-finger motif, which were common signatures to group II of WRKY family. The three-dimensional (3D) model of KoWRKY40 was formed by one α-helix and five β-strands. Evolutionary analysis revealed that KoWRKY40 has the closest homology with a WRKY protein from another mangrove plant Bruguiera gymnorhiza. The KoWRKY40 protein was verified to be exclusively located in nucleus of tobacco epidermis cells. Gene expression analysis demonstrated that KoWRKY40 was induced highly in the roots and leaves, but lowly in stems in K. obovata under cold stress. Overexpression of KoWRKY40 in Arabidopsis significantly enhanced the fresh weight, root length, and lateral root number of the transgenic lines under cold stress. KoWRKY40 transgenic Arabidopsis exhibited higher proline content, SOD, POD, and CAT activities, and lower MDA content, and H2O2 content than wild-type Arabidopsis under cold stress condition. Cold stress affected the expression of genes related to proline biosynthesis, antioxidant system, and the ICE-CBF-COR signaling pathway, including AtP5CS1, AtPRODH1, AtMnSOD, AtPOD, AtCAT1, AtCBF1, AtCBF2, AtICE1, AtCOR47 in KoWRKY40 transgenic Arabidopsis plants. CONCLUSION These results demonstrated that KoWRKY40 conferred cold tolerance in transgenic Arabidopsis by regulating plant growth, osmotic balance, the antioxidant system, and ICE-CBF-COR signaling pathway. The study indicates that KoWRKY40 is an important regulator involved in the cold stress response in plants.
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Affiliation(s)
- Jiao Fei
- State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301 China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, 511458 China
- Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, 510301 China
| | - You-Shao Wang
- State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301 China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, 511458 China
- Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, 510301 China
| | - Hao Cheng
- State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301 China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, 511458 China
- Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, 510301 China
| | - Yu-Bin Su
- Department of Cell Biology & Institute of Biomedicine, National Engineering Research Center of Genetic Medicine, MOE Key Laboratory of Tumor Molecular Biology, Guangdong Provincial Key Laboratory of Bioengineering Medicine, College of Life Science and Technology, Jinan University, Guangzhou, 510632 China
| | - Yong-Jia Zhong
- Root Biology Center, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
| | - Lei Zheng
- Root Biology Center, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
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Su YB, Tang XK, Zhu LP, Yang KX, Pan L, Li H, Chen ZG. Enhanced Biosynthesis of Fatty Acids Contributes to Ciprofloxacin Resistance in Pseudomonas aeruginosa. Front Microbiol 2022; 13:845173. [PMID: 35547113 PMCID: PMC9083408 DOI: 10.3389/fmicb.2022.845173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 03/14/2022] [Indexed: 11/13/2022] Open
Abstract
Antibiotic-resistant Pseudomonas aeruginosa is insensitive to antibiotics and difficult to deal with. An understanding of the resistance mechanisms is required for the control of the pathogen. In this study, gas chromatography-mass spectrometer (GC-MS)-based metabolomics was performed to identify differential metabolomes in ciprofloxacin (CIP)-resistant P. aeruginosa strains that originated from P. aeruginosa ATCC 27853 and had minimum inhibitory concentrations (MICs) that were 16-, 64-, and 128-fold (PA-R16CIP, PA-R64CIP, and PA-R128CIP, respectively) higher than the original value, compared to CIP-sensitive P. aeruginosa (PA-S). Upregulation of fatty acid biosynthesis forms a characteristic feature of the CIP-resistant metabolomes and fatty acid metabolome, which was supported by elevated gene expression and enzymatic activity in the metabolic pathway. The fatty acid synthase inhibitor triclosan potentiates CIP to kill PA-R128CIP and clinically multidrug-resistant P. aeruginosa strains. The potentiated killing was companied with reduced gene expression and enzymatic activity and the returned abundance of fatty acids in the metabolic pathway. Consistently, membrane permeability was reduced in the PA-R and clinically multidrug-resistant P. aeruginosa strains, which were reverted by triclosan. Triclosan also stimulated the uptake of CIP. These findings highlight the importance of the elevated biosynthesis of fatty acids in the CIP resistance of P. aeruginosa and provide a target pathway for combating CIP-resistant P. aeruginosa.
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Affiliation(s)
- Yu-Bin Su
- Department of Pediatrics and Department of Allergy, The Third Affiliated Hospital, State Key Laboratory of Bio-Control, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China.,Department of Cell Biology, Ministry of Education Key Laboratory of Tumor Molecular Biology, Guangdong Provincial Key Laboratory of Bioengineering Medicine, Institute of Biomedicine, National Engineering Research Center of Genetic Medicine, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Xi-Kang Tang
- Department of Pediatrics and Department of Allergy, The Third Affiliated Hospital, State Key Laboratory of Bio-Control, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China
| | - Ling-Ping Zhu
- Department of Pediatrics and Department of Allergy, The Third Affiliated Hospital, State Key Laboratory of Bio-Control, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China
| | - Ke-Xin Yang
- Department of Pediatrics and Department of Allergy, The Third Affiliated Hospital, State Key Laboratory of Bio-Control, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China
| | - Li Pan
- Department of Pediatrics and Department of Allergy, The Third Affiliated Hospital, State Key Laboratory of Bio-Control, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China
| | - Hui Li
- Department of Pediatrics and Department of Allergy, The Third Affiliated Hospital, State Key Laboratory of Bio-Control, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China
| | - Zhuang-Gui Chen
- Department of Pediatrics and Department of Allergy, The Third Affiliated Hospital, State Key Laboratory of Bio-Control, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China
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Dong RF, Gong LH, Su YB, Zhang W, Sun XQ, Ding Y. [Dedifferentiated adamantinoma: report of a case]. Zhonghua Bing Li Xue Za Zhi 2022; 51:234-236. [PMID: 35249289 DOI: 10.3760/cma.j.cn112151-20211028-00784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- R F Dong
- Department of Pathology, Beijing Jishuitan Hospital, Beijing 100035, China
| | - L H Gong
- Department of Pathology, Beijing Jishuitan Hospital, Beijing 100035, China
| | - Y B Su
- Department of Radiology, Beijing Jishuitan Hospital, Beijing 100035, China
| | - W Zhang
- Department of Pathology, Beijing Jishuitan Hospital, Beijing 100035, China
| | - X Q Sun
- Department of Pathology, Beijing Jishuitan Hospital, Beijing 100035, China
| | - Y Ding
- Department of Pathology, Beijing Jishuitan Hospital, Beijing 100035, China
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Yang J, Yang XL, Su YB, Peng XX, Li H. Activation of the TCA Cycle to Provide Immune Protection in Zebrafish Immunized by High Magnesium-Prepared Vibrio alginolyticus Vaccine. Front Immunol 2021; 12:739591. [PMID: 34950133 PMCID: PMC8688852 DOI: 10.3389/fimmu.2021.739591] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Accepted: 11/15/2021] [Indexed: 12/12/2022] Open
Abstract
Vaccines are safe and efficient in controlling bacterial diseases in the aquaculture industry and are in line with green farming. The present study develops a previously unreported approach to prepare a live-attenuated V. alginolyticus vaccine by culturing bacteria in a high concentration of magnesium to attenuate bacterial virulence. Furthermore, metabolomes of zebrafish immunized with the live-attenuated vaccines were compared with those of survival and dying zebrafish infected by V. alginolyticus. The enhanced TCA cycle and increased fumarate were identified as the most key metabolic pathways and the crucial biomarker of vaccine-mediated and survival fish, respectively. Exogenous fumarate promoted expression of il1β, il8, il21, nf-κb, and lysozyme in a dose-dependent manner. Among the five innate immune genes, the elevated il1β, il8, and lysozyme are overlapped in the vaccine-immunized zebrafish and the survival from the infection. These findings highlight a way in development of vaccines and exploration of the underlying mechanisms.
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Affiliation(s)
- Jun Yang
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Xiao-Li Yang
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yu-Bin Su
- Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes, Department of Biotechnology, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Xuan-Xian Peng
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Hui Li
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
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Fei J, Wang YS, Cheng H, Su YB. An efficient protein extraction method applied to mangrove plant Kandelia obovata leaves for proteomic analysis. Plant Methods 2021; 17:100. [PMID: 34587982 PMCID: PMC8482605 DOI: 10.1186/s13007-021-00800-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 09/12/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Mangroves plants, an important wetland system in the intertidal shores, play a vital role in estuarine ecosystems. However, there is a lack of a very effective method for extracting protein from mangrove plants for proteomic analysis. Here, we evaluated the efficiency of three different protein extraction methods for proteomic analysis of total proteins obtained from mangrove plant Kandelia obovata leaves. RESULTS The protein yield of the phenol-based (Phe-B) method (4.47 mg/g) was significantly higher than the yields of the traditional phenol (Phe) method (2.38 mg/g) and trichloroacetic acid-acetone (TCA-A) method (1.15 mg/g). The Phe-B method produced better two-dimensional electrophoresis (2-DE) protein patterns with high reproducibility regarding the number, abundance and coverage of protein spots. The 2-DE gels showed that 847, 650 and 213 unique protein spots were separated from the total K. obovata leaf proteins extracted by the Phe-B, Phe and TCA-A methods, respectively. Fourteen pairs of protein spots were randomly selected from 2-DE gels of Phe- and Phe-B- extracted proteins for identification by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF/TOF-MS) technique, and the results of three pairs were consistent. Further, oxygen evolving enhancer protein and elongation factor Tu could be observed in the 2-DE gels of Phe and Phe-B methods, but could only be detected in the results of the Phe-B methods, showing that Phe-B method might be the optimized choice for proteomic analysis. CONCLUSION Our data provides an improved Phe-B method for protein extraction of K. obovata and other mangrove plant tissues which is rich in polysaccharides and polyphenols. This study might be expected to be used for proteomic analysis in other recalcitrant plants.
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Affiliation(s)
- Jiao Fei
- State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301 China
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, 511458 China
- Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, 510301 China
| | - You-Shao Wang
- State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301 China
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, 511458 China
- Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, 510301 China
| | - Hao Cheng
- State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301 China
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, 511458 China
- Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, 510301 China
| | - Yu-Bin Su
- College of Life Science and Technology, Jinan University, Guangzhou, 510632 China
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Su YB, Zhao X, Chen LJ, Qian HL, Yan XP. Fabrication of G-quadruplex/porphyrin conjugated gold/persistent luminescence theranostic nanoprobe for imaging-guided photodynamic therapy. Talanta 2021; 233:122567. [PMID: 34215063 DOI: 10.1016/j.talanta.2021.122567] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 05/24/2021] [Accepted: 05/26/2021] [Indexed: 11/30/2022]
Abstract
Photodynamic therapy (PDT) received great attention in cancer therapy due to the advantages of negligible drug resistance, low side effects, and minimal invasiveness. Development of theranostic nanoprobes with specific imaging-guided PDT is of great significance in the field. Herein we report the fabrication of a novel theranostic nanoprobe porphyrin/G-quadruplex conjugated gold/persistent luminescence nanocomposites for imaging-guided PDT. The developed nanoprobe contains NIR-emitting persistent luminescent nanoparticles (PLNP) as the core for autofluorescence-free bioimaging and Au coating on PLNP for facile subsequent DNA conjugation. The DNA sequence is designed to contain G-rich AS1411 aptamer for recognizing the over-expressed cellular nucleolin of cancer cell and forming a G-quadruplex structure to combine with tetrakis (4-carboxyphenyl) porphyrin (TCPP) to realize PDT. The AS1411 aptamer-contained DNA conjugated Au-coated PLNP is rapidly prepared via a freezing method with high content of DNA and good aqueous stability. Meanwhile, TCPP is easily loaded into the G-quadruplex structure formed from G-rich AS1411 aptamer on the surface of Au/PLNP in presence of K+. The theranostic nanoprobe gives integrated merits of PLNP for autofluorescence-free bioimging, TCPP for PDT and AS1411 aptamer-contained DNA for specific binding to cancer cells. This work provides a new specially designed imaging-guided PDT nanoplatform for theranostics.
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Affiliation(s)
- Yu-Bin Su
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, 214122, China; Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Xu Zhao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, 214122, China; Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Li-Jian Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, 214122, China; Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Hai-Long Qian
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, 214122, China; Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Xiu-Ping Yan
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, 214122, China; Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China; Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China.
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10
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Fei J, Wang YS, Cheng H, Su YB, Zhong Y, Zheng L. Cloning and characterization of KoOsmotin from mangrove plant Kandelia obovata under cold stress. BMC Plant Biol 2021; 21:10. [PMID: 33407136 PMCID: PMC7789355 DOI: 10.1186/s12870-020-02746-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Accepted: 11/17/2020] [Indexed: 05/02/2023]
Abstract
BACKGROUND Low temperature is a major abiotic stress that seriously limits mangrove productivity and distribution. Kandelia obovata is the most cold-resistance specie in mangrove plants, but little is known about the molecular mechanism underlying its resistance to cold. Osmotin is a key protein associated with abiotic and biotic stress response in plants but no information about this gene in K. obovata was reported. RESULTS In this study, a cDNA sequence encoding osmotin, KoOsmotin (GenBank accession no. KP267758), was cloned from mangrove plant K. obovata. The KoOsmotin protein was composed of 221 amino acids and showed a calculated molecular mass of 24.11 kDa with pI 4.92. The KoOsmotin contained sixteen cysteine residues and an N-terminal signal peptide, which were common signatures to most osmotins and pathogenesis-related 5 proteins. The three-dimensional (3D) model of KoOsmotin, contained one α-helix and eleven β-strands, was formed by three characteristic domains. Database comparisons of the KoOsmotin showed the closest identity (55.75%) with the osmotin 34 from Theobroma cacao. The phylogenetic tree also revealed that the KoOsmotin was clustered in the branch of osmotin/OLP (osmotin-like protien). The KoOsmotin protein was proved to be localized to both the plasma membrane and cytoplasm by the subcellular localization analysis. Gene expression showed that the KoOsmotin was induced primarily and highly in the leaves of K. obovata, but less abundantly in stems and roots. The overexpressing of KoOsmotin conferred cold tolerance in Escherichia coli cells. CONCLUSION As we known, this is the first study to explore the osmotin of K. obovata. Our study provided valuable clues for further exploring the function of KoOsmotin response to stress.
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Affiliation(s)
- Jiao Fei
- State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, 511458, China
- Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, 510301, China
| | - You-Shao Wang
- State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China.
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, 511458, China.
- Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, 510301, China.
| | - Hao Cheng
- State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China.
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, 511458, China.
- Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, 510301, China.
| | - Yu-Bin Su
- College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Yongjia Zhong
- Root Biology Center, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Lei Zheng
- Root Biology Center, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
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11
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Dong RF, Li L, Su YB, Zhang M, Sun XQ, Ding Y. [Fibrocartilaginous mesenchymoma: report of a case]. Zhonghua Bing Li Xue Za Zhi 2021; 50:63-65. [PMID: 33396990 DOI: 10.3760/cma.j.cn112151-20200522-00403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- R F Dong
- Department of Pathology, Beijing Jishuitan Hospital, Beijing 100035, China
| | - L Li
- Department of Pathology, Beijing Jishuitan Hospital, Beijing 100035, China
| | - Y B Su
- Department of Radiology, Beijing Jishuitan Hospital, Beijing 100035, China
| | - M Zhang
- Department of Pathology, Beijing Jishuitan Hospital, Beijing 100035, China
| | - X Q Sun
- Department of Pathology, Beijing Jishuitan Hospital, Beijing 100035, China
| | - Y Ding
- Department of Pathology, Beijing Jishuitan Hospital, Beijing 100035, China
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12
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Wang C, Dong XS, Yang YY, Xu GJ, Wu MM, Yan FJ, Zhang LG, An L, Fu PS, Wang XR, Su YB, Meng QL. Metabolites in the TCA Cycle Promote Resistance to Chloramphenicol of Edwardsiella tarda. J Proteome Res 2020; 20:972-981. [PMID: 33231461 DOI: 10.1021/acs.jproteome.0c00725] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Antibiotic-resistant bacteria are a serious threat to human and animal health. Metabolite-enabled eradication of drug-resistant pathogens is an attractive strategy, and metabolite adjuvants, such as fumarate, are used for restoring the bactericidal ability of antibiotics. However, we show that metabolites in the TCA cycle increase the viability of Edwardsiella tarda against chloramphenicol (CAP), based on the survival assay of differential metabolites identified by LC-MS/MS. Furthermore, NADPH promotes CAP resistance in the CAP-resistant strain, while oxidants restore the bactericidal ability. Finally, we show that the intracellular redox state determines the sensitivity to CAP, and the total antioxidative capacity is decreased significantly in the antibiotic-resistant strain. Considering that the metabolites promote CAP resistance, metabolite adjuvants should be applied very cautiously. Overall, our research expands on the knowledge that the redox state is related to the bactericidal ability of CAP.
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Affiliation(s)
- Chao Wang
- Shandong Freshwater Fisheries Research Institute, Jinan 250013, China.,Shandong Provincial Key Laboratory of Freshwater Genetics and Breeding, Jinan 250013, China
| | - Xue-Sa Dong
- Shandong Freshwater Fisheries Research Institute, Jinan 250013, China.,Shandong Provincial Key Laboratory of Freshwater Genetics and Breeding, Jinan 250013, China
| | - Yan-Yan Yang
- Shandong Freshwater Fisheries Research Institute, Jinan 250013, China
| | - Guo-Jing Xu
- Shandong Freshwater Fisheries Research Institute, Jinan 250013, China
| | - Meng-Meng Wu
- Shandong Freshwater Fisheries Research Institute, Jinan 250013, China
| | - Fa-Jun Yan
- Shandong Freshwater Fisheries Research Institute, Jinan 250013, China
| | - Long-Gang Zhang
- Shandong Freshwater Fisheries Research Institute, Jinan 250013, China.,Shandong Provincial Key Laboratory of Freshwater Genetics and Breeding, Jinan 250013, China
| | - Li An
- Shandong Freshwater Fisheries Research Institute, Jinan 250013, China.,Shandong Provincial Key Laboratory of Freshwater Genetics and Breeding, Jinan 250013, China
| | - Pei-Sheng Fu
- Shandong Freshwater Fisheries Research Institute, Jinan 250013, China.,Shandong Provincial Key Laboratory of Freshwater Genetics and Breeding, Jinan 250013, China
| | - Xi-Rong Wang
- Shandong Freshwater Fisheries Research Institute, Jinan 250013, China.,Shandong Provincial Key Laboratory of Freshwater Genetics and Breeding, Jinan 250013, China
| | - Yu-Bin Su
- Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes, Department of Biotechnology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Qing-Lei Meng
- Shandong Freshwater Fisheries Research Institute, Jinan 250013, China.,Shandong Provincial Key Laboratory of Freshwater Genetics and Breeding, Jinan 250013, China
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13
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Li L, Su YB, Peng B, Peng XX, Li H. Metabolic mechanism of colistin resistance and its reverting in Vibrio alginolyticus. Environ Microbiol 2020; 22:4295-4313. [PMID: 32291842 DOI: 10.1111/1462-2920.15021] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 04/12/2020] [Indexed: 12/17/2022]
Abstract
Colistin is a last-line antibiotic against Gram-negative multidrug-resistant bacteria, but the increased resistance poses a huge challenge to this drug. However, the mechanisms underlying such resistance are largely unexplored. The present study first identified the mutations of two genes encoding AceF subunit of pyruvate dehydrogenase (PDH) and TetR family transcriptional regulator in colistin-resistant Vibrio alginolyticus (VA-RCT ) through genome sequencing. Then, gas chromatography-mass spectroscopy-based metabolomics was adopted to investigate metabolic responses since PDH plays a role in central carbon metabolism. Colistin resistance was associated with the reduction of the central carbon metabolism and energy metabolism, featuring the alteration of the pyruvate cycle, a recently characterized energy-producing cycle. Metabolites in the pyruvate cycle reprogramed colistin-resistant metabolome to colistin-sensitive metabolome, resulting in increased gene expression, enzyme activity or protein abundance of the cycle and sodium-translocating nicotinamide adenine dinucleotide-ubiquinone oxidoreductase. This reprogramming promoted the production of the proton motive force that enhances the binding between colistin and lipid A in lipopolysaccharide. Moreover, this metabolic approach was effective against VA-RCT in vitro and in vivo as well as other clinical isolates. These findings reveal a previously unknown mechanism of colistin resistance and develop a metabolome-reprogramming approach to promote colistin efficiency to combat with colistin-resistant bacteria.
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Affiliation(s)
- Lu Li
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou, 510006, China
| | - Yu-Bin Su
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou, 510006, China
- Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes, Department of Biotechnology, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Bo Peng
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou, 510006, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519000, China
| | - Xuan-Xian Peng
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou, 510006, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519000, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China
| | - Hui Li
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou, 510006, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519000, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China
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14
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Wang HK, Liang LS, He RG, Su YB, Mao P, Hu JZ. Comparative analysis of locking plates versus hook plates in the treatment of Neer type II distal clavicle fractures. J Int Med Res 2020; 48:300060520918060. [PMID: 32314621 PMCID: PMC7175064 DOI: 10.1177/0300060520918060] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Objective This study was performed to compare the clinical effects of locking plates (LPs) with those of hook plates (HPs) in the treatment of Neer type II distal clavicle fractures. Methods From August 2014 to April 2018, 64 patients with Neer type II distal clavicle fractures were treated in our department. The clinical effects were assessed with respect to the operation time, intraoperative blood loss, incision length, fracture healing, postoperative pain, postoperative complications, and postoperative shoulder joint function. Results There were no significant differences in the healing time, operation time, or intraoperative blood loss between the LP and HP groups. The incision length was significantly shorter in the LP than HP group, and the postoperative complication rate was significantly lower in the LP than HP group. The visual analog scale score, Constant–Murley score, and University of California Los Angeles score were significantly better in the LP than HP group. Conclusions Compared with HPs, the use of LPs involves a smaller incision in the treatment of Neer type II distal clavicle fractures and significantly reduces postoperative pain and complications. Therefore, priority can be given to the use of LPs in the treatment of Neer type II distal clavicle fractures.
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Affiliation(s)
- Hong-Kai Wang
- Department of Orthopaedics, The Second Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China
| | - Li-Sheng Liang
- Department of Orthopaedics, The Second Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China
| | - Ren-Gao He
- Department of Orthopaedics, The Second Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China
| | - Yu-Bin Su
- Department of Orthopaedics, The Second Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China
| | - Peng Mao
- Department of Orthopaedics, The Second Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China
| | - Jun-Zu Hu
- Department of Orthopaedics, The Second Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China
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15
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Su YB, Kuang SF, Peng XX, Li H. The depressed P cycle contributes to the acquisition of ampicillin resistance in Edwardsiella piscicida. J Proteomics 2019; 212:103562. [PMID: 31733415 DOI: 10.1016/j.jprot.2019.103562] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 10/03/2019] [Accepted: 10/18/2019] [Indexed: 02/07/2023]
Abstract
Antibiotic-resistant bacteria are an increasingly serious threat to human health and aquaculture. To further explore bacterial antibiotic resistance mechanism, iTRAQ is used to identify a differential proteome in ampicillin-resistant LTB4 (LTB4-RAMP), a strain of Edwardsiella piscicida. A total of 102 differentially proteins with 50 upregulation and 52 downregulation are identified. Since many of these changes are related to metabolism, interactive pathways explorer(iPath) is used to understand a global differentially metabolic response in LTB4-RAMP. This analysis identifies a global depressed metabolic modulation as the most characteristic feature of LTB4-RAMP. Lower membrane potential and ATP in LTB4-RAMP than control support that the central carbon metabolism and energy metabolism are reduced. Since the pyruvate cycle (the P cycle) plays a key role in the central carbon metabolism and energy metabolism, further investigation focuses on the P cycle and shows that expression of genes and activity of enzymes in the P cycle are decreased in LTB4-RAMP. These results support the conclusion that the depressed P cycle contributes to the acquisition of ampicillin resistance in E.piscicida. These findings indicate that the combination of proteomics and iPath analysis can provide a global metabolic profile, which helps us better understand the correlation between ampicillin resistance and cellular metabolism. SIGNIFICANCE: The present study uses iTRAQ to explore ampicillin resistance mechanism in Edwardsiella piscicida and finds many of these differential abundances of proteins are related to metabolism. IPath further identifies a global depressed metabolic modulation and characterizes the reduced pyruvate cycle as the most characteristic feature of the ampicillin-resistant E. piscicida, which is supported by reduced expression of genes and activity of enzymes in the pyruvate cycle. Consisitently, lower membrane potential and ATP are detetced. These results reveal the metabolic mechanism of ampicillin resistance and provide a solid proof to revert the resistance by reprogramming metabolomics.
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Affiliation(s)
- Yu-Bin Su
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, Guangdong Province Key Laboratory for Pharmaceutical Functional Genes, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou 510006, People's Republic of China; Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes, Department of Biotechnology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Su-Fang Kuang
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, Guangdong Province Key Laboratory for Pharmaceutical Functional Genes, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou 510006, People's Republic of China
| | - Xuan-Xian Peng
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, Guangdong Province Key Laboratory for Pharmaceutical Functional Genes, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou 510006, People's Republic of China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519000, China
| | - Hui Li
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, Guangdong Province Key Laboratory for Pharmaceutical Functional Genes, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou 510006, People's Republic of China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519000, China.
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16
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Zhang DC, Hu ZQ, Su YB, Hai B, Zhu XL, Zhu JF, Ma X. Simple method for liquid analysis by laser-induced breakdown spectroscopy (LIBS). Opt Express 2018; 26:18794-18802. [PMID: 30114051 DOI: 10.1364/oe.26.018794] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 06/04/2018] [Indexed: 06/08/2023]
Abstract
As a fast-developing technique for in situ multi-element analysis method, laser induced breakdown spectroscopy - LIBS is, however, developing slowly on liquid analysis due to some technical difficulties. We propose a new method, namely capillary mode, to quantify the concentrations of the elements in solution using LIBS. A Nd:YAG laser with repetition of 10 Hz were used to analyze the solution of Na2CrO4 and no any sample preparation in measurements. The experimental results show that the splashing of liquid induced by laser pulses is decreased significantly and the pollution of mirrors is avoided effectively using liquid capillary mode. The results of quantitative analysis for liquid are also improved than other method. The calibration curves of Cr and Na are well characterized by straight lines and the regression coefficient values of the linear fit are better than 0.998. The limits of detection (LODs) of Cr and Na are determined to be 28.9 mg/L and 1.0 mg/L in this work, respectively. The experimental results show that the liquid capillary mode provides a more practical and very simple approach to improve accuracy of quantitative element analysis in liquids by LIBS technique.
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17
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Ye JZ, Lin XM, Cheng ZX, Su YB, Li WX, Ali FM, Zheng J, Peng B. Identification and efficacy of glycine, serine and threonine metabolism in potentiating kanamycin-mediated killing of Edwardsiella piscicida. J Proteomics 2018; 183:34-44. [PMID: 29753025 DOI: 10.1016/j.jprot.2018.05.006] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [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: 12/18/2017] [Revised: 04/26/2018] [Accepted: 05/07/2018] [Indexed: 12/27/2022]
Abstract
We previously showed that glucose potentiated kanamycin to kill multidrug-resistant Edwardsiella piscicida through activation of the TCA cycle. However, whether other regulatory mechanism is involved requires further investigation. By quantitative proteomics technology, iTRAQ, we systematically mapped the altered proteins in the presence of glucose and identified 94 differentially expressed proteins. The analysis of the altered proteins by pathways, amino acid biosynthesis and metabolism were enriched. And the most significantly altered eight amino acids tyrosine, phenylalanine, valine, leucine, isoleucine, glycine, serine and threonine were investigated for their potentiation of kanamycin to kill EIB202, where glycine, serine and threonine showed the strongest efficacy than the others. The combinations of glycine and serine or glucose with glycine, serine or threonine had the best effects. Moreover, pyruvate dehydrogenase, α-ketoglutarate dehydrogenase and succinate dehydrogenase activities were increased as well as the proton motive force (PMF) and intracellular kanamycin. Finally, inhibitors that disrupt PMF production abolished the potentiation. These results shed light on the mechanism of how glucose promoting the amino acids biosynthesis and metabolism to potentiate kanamycin to kill antibiotic-resistant bacteria. More importantly, our results suggested that adjusting amino acid biosynthesis and metabolism might be a strategy to become phenotypic resistance to antibiotics in bacteria. SIGNIFICANCE Tackling antibiotic resistance is an emerging issue in current years. Despite the efforts made toward developing new antibiotics, the progress is still lagged behind expectation. Novel strategies are required. The use of metabolite to revert antibiotic resistant is highly appreciated in recent years due to the less toxicity, more economic and high efficacy. As a continued study of our previous report on glucose potentiating kanamycin to kill antibiotic-resistant bacteria. The current study further expands the previous discovery on the mechanism of how glucose potentiate this effect. This result provides more basis on the action of glucose in reverting antibiotic resistance. And more importantly, we may derive more metabolites other than glucose to manage antibiotic resistance.
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Affiliation(s)
- Jin-Zhou Ye
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China
| | - Xiang-Min Lin
- Fujian Provincial Key Laboratory, Agroecological Processing and Safety Monitoring, Key Laboratory of Crop Ecology and Molecular Physiology, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 35002, China
| | - Zhi-Xue Cheng
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Yu-Bin Su
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Wan-Xin Li
- Fujian Provincial Key Laboratory, Agroecological Processing and Safety Monitoring, Key Laboratory of Crop Ecology and Molecular Physiology, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 35002, China
| | - Far-Man Ali
- Fujian Provincial Key Laboratory, Agroecological Processing and Safety Monitoring, Key Laboratory of Crop Ecology and Molecular Physiology, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 35002, China
| | - Jun Zheng
- Faculty of Health Sciences, University of Macau, Macau, China
| | - Bo Peng
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China.
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Ye JZ, Su YB, Lin XM, Lai SS, Li WX, Ali F, Zheng J, Peng B. Alanine Enhances Aminoglycosides-Induced ROS Production as Revealed by Proteomic Analysis. Front Microbiol 2018; 9:29. [PMID: 29441044 PMCID: PMC5797687 DOI: 10.3389/fmicb.2018.00029] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [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: 08/29/2017] [Accepted: 01/08/2018] [Indexed: 12/23/2022] Open
Abstract
Metabolite-enabled killing of antibiotic-resistant pathogens by antibiotics is an attractive strategy to manage antibiotic resistance. Our previous study demonstrated that alanine or/and glucose increased the killing efficacy of kanamycin on antibiotic-resistant bacteria, whose action is through up-regulating TCA cycle, increasing proton motive force and enhancing antibiotic uptake. Despite the fact that alanine altered several metabolic pathways, other mechanisms could be potentially involved in alanine-mediated kanamycin killing of bacteria which remains to be explored. In the present study, we adopted proteomic approach to analyze the proteome changes induced by exogenous alanine. Our results revealed that the expression of three outer membrane proteins was altered and the deletion of nagE and fadL decreased the intracellular kanamycin concentration, implying their possible roles in mediating kanamycin transport. More importantly, the integrated analysis of proteomic and metabolomic data pointed out that alanine metabolism could connect to riboflavin metabolism that provides the source for reactive oxygen species (ROS) production. Functional studies confirmed that alanine treatment together with kanamycin could promote ROS production that in turn potentiates the killing of antibiotic-resistant bacteria. Further investigation showed that alanine repressed the transcription of antioxidant-encoding genes, and alanine metabolism to riboflavin metabolism connected with riboflavin metabolism through TCA cycle, glucogenesis pathway and pentose phosphate pathway. Our results suggest a novel mechanism by which alanine facilitates kanamycin killing of antibiotic-resistant bacteria via promoting ROS production.
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Affiliation(s)
- Jin-Zhou Ye
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, School of Life Sciences, Sun Yat-sen University, Guangzhou, China.,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Yu-Bin Su
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Xiang-Min Lin
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, Key Laboratory of Crop Ecology and Molecular Physiology, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Shi-Shi Lai
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Wan-Xin Li
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, Key Laboratory of Crop Ecology and Molecular Physiology, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Farman Ali
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, Key Laboratory of Crop Ecology and Molecular Physiology, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Jun Zheng
- Faculty of Health Sciences, University of Macau, Macau, China
| | - Bo Peng
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, School of Life Sciences, Sun Yat-sen University, Guangzhou, China.,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
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Wang L, Khoo BCC, Cheng XG, Brown K, Lewis JR, Su YB, Guo Z, Li K, Prince RL. Differences in femoral neck structure between elderly Caucasian and Chinese populations: a cross-sectional study of Perth-Beijing cohorts. Arch Osteoporos 2017; 12:72. [PMID: 28812206 DOI: 10.1007/s11657-017-0366-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 07/31/2017] [Indexed: 02/03/2023]
Abstract
UNLABELLED Structural skeletal differences of the femoral neck of older Beijing-Chinese and Perth-Caucasian women were compared; adjusting for frame size-related differences, Beijing-Chinese have lower periosteal width; however, indices of internal bone distribution suggest that Beijing-Chinese may exhibit increased resistance to fracture that may relate to the reduced hip fracture incidence. INTRODUCTION Ethnic differences in skeletal structure may relate to differences in hip fracture risk in Chinese and Caucasian populations. 2D mass, size, and structural biomechanics were compared in the two populations. METHODS Quantitative computed tomography-derived geometric variables were compared in age-matched community-derived female populations, 196 Beijing-Chinese 76.5 ± 4.8 (mean ± SD) years and 237 Perth-Caucasians 77.1 ± 5.0 years. These included scanned area (A), periosteal width (W), bone mineral content (BMC), aBMD, bone cross-sectional area (bCSA), section modulus (Z) and buckling ratio (BR). Assumption-free measures included sigma (σ), related to the distribution of bone in the scanned image previously identified as a predictor of hip fracture, and delta (δ), the center-of-mass displacement from the geometric center. RESULTS Compared to Beijing-Chinese, Perth-Caucasians were heavier (Beijing-Chinese 58.7 ± 11.8; Perth-Caucasians 66.1 ± 11.0 kg), taller (154.9 ± 16.7 vs 158.9 ± 6.0 cm), and had higher BMC, A, and W. After adjustment for frame size, BMC was not significantly different but W remained higher in Perth-Caucasians. Differences in variables aBMD, Z, BR, and σ favored higher resistance to failure with Beijing-Chinese before and after adjustment for frame size. δ was similar in both populations; bCSA was higher in Beijing-Chinese before adjustment for frame size but not after. CONCLUSIONS Bone mass differences in two populations were related to frame size differences. However, femoral neck width remained smaller in Beijing-Chinese suggesting effects of local genetic and environmental factors. In Beijing-Chinese participants compared to Perth-Caucasians, internal bone distribution suggests increased resistance to deformation if exposed to same force that may, in-part, relate to reduced incidence of hip fracture in Beijing-Chinese.
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Affiliation(s)
- L Wang
- Department of Radiology, Beijing Jishuitan Hospital, Xicheng District, Beijing, China
| | - B C C Khoo
- Medical Technology and Physics, Sir Charles Gairdner Hospital, Nedlands, Perth, WA, Australia.,School of Physics, University of Western Australia, Nedlands, WA, Australia.,School of Medicine and Pharmacology, University of Western Australia, Nedlands, WA, Australia
| | - X G Cheng
- Department of Radiology, Beijing Jishuitan Hospital, Xicheng District, Beijing, China
| | - K Brown
- Mindways Software, Austin, TX, USA
| | - J R Lewis
- School of Medicine and Pharmacology, University of Western Australia, Nedlands, WA, Australia.,Centre for Kidney Research, Children's Hospital at Westmead School of Public Health, Sydney Medical School, University of Sydney, Sydney, Australia
| | - Y B Su
- Department of Radiology, Beijing Jishuitan Hospital, Xicheng District, Beijing, China
| | - Z Guo
- Department of Radiology, Beijing Jishuitan Hospital, Xicheng District, Beijing, China
| | - K Li
- Department of Radiology, Beijing Jishuitan Hospital, Xicheng District, Beijing, China
| | - R L Prince
- School of Medicine and Pharmacology, University of Western Australia, Nedlands, WA, Australia. .,Department of Endocrinology and Diabetes, Sir Charles Gairdner Hospital, Nedlands, WA, Australia.
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Wang L, Cheng XG, Su YB, Brown K, Xu L, Li K, Zhang CX, Zhang Y, Duanmu YY, Wu XB, Wang MY. Sex-related variations in cortical and trabecular bone of the femoral neck in an elderly Chinese population. Osteoporos Int 2017; 28:2391-2399. [PMID: 28405730 DOI: 10.1007/s00198-017-4043-y] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Accepted: 04/05/2017] [Indexed: 10/19/2022]
Abstract
UNLABELLED Quantitative computed tomography (QCT) was used to investigate sex-related variations in cortical and trabecular bone of the femoral neck. Cortical bone thickness of women in the superior quadrant was thinner than that of men, and the cortex in all four quadrants was negatively associated with age in women. INTRODUCTION This cross-sectional study aimed to investigate sex-related similarities and differences in femoral neck structure in an elderly Chinese population by QCT bone investigational toolkit (BIT) analysis. METHODS This study included 207 male (67.9 ± 7.7 years; range, 55-87 years) and 400 female subjects (68.0 ± 8.7 years; range, 55-96 years). BIT module was used to measure cortical and trabecular bone in anatomic quadrants of the femoral neck. Measurements of cortical thickness (Ct.Th), cortical vBMD (Ct.vBMD), trabecular vBMD (Tb.vBMD), and integral vBMD (It.vBMD) at the femoral neck were determined in four anatomical sectors. RESULTS The greatest difference between sexes, after adjusting for age, height, and weight, was in Ct.Th of Quadrant Supero-anterior (SA), which was 27.4% lower in women (p<0.001). Ct.Th of Quadrant Supero-posterior (SP) was 15.1% lower in women (p = 0.027). Ct.Th and Tb.vBMD in all four quadrants appeared to be negatively associated with age in females, whereas no significant relationship was observed in males, except Ct.Th of Quadrant SP. CONCLUSIONS The superior femoral neck geometry between males and females was significantly different, even after adjustment for body size and age, and the sub-regional cortical and trabecular bone negatively age-related changes in women indicated that women apparently have a more vulnerable geometrical outcome with age for fractures than men.
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Affiliation(s)
- L Wang
- Department of Radiology, Beijing Jishuitan Hospital, Xicheng District, Beijing, China
| | - X G Cheng
- Department of Radiology, Beijing Jishuitan Hospital, Xicheng District, Beijing, China.
| | - Y B Su
- Department of Radiology, Beijing Jishuitan Hospital, Xicheng District, Beijing, China
| | - K Brown
- Mindways Software, Austin, TX, USA
| | - L Xu
- Department of Radiology, Beijing Jishuitan Hospital, Xicheng District, Beijing, China
| | - K Li
- Department of Radiology, Beijing Jishuitan Hospital, Xicheng District, Beijing, China
| | - C X Zhang
- Department of Radiology, Beijing Jishuitan Hospital, Xicheng District, Beijing, China
| | - Y Zhang
- Department of Radiology, Beijing Jishuitan Hospital, Xicheng District, Beijing, China
| | - Y Y Duanmu
- Department of Radiology, Beijing Jishuitan Hospital, Xicheng District, Beijing, China
| | - X B Wu
- Department of Traumatology and Orthopedic Surgery, Beijing Jishuitan Hospital, Xicheng District, Beijing, China
| | - M Y Wang
- Department of Traumatology and Orthopedic Surgery, Beijing Jishuitan Hospital, Xicheng District, Beijing, China
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21
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Li ZC, Su YB, Bi XH, Wang QY, Wang J, Zhao JB, Liu L, Wang FL, Li DF, Lai CH. Effects of lipid form and source on digestibility of fat and fatty acids in growing pigs. J Anim Sci 2017; 95:3103-3109. [PMID: 28727102 DOI: 10.2527/jas.2016.1268] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The objective of this study was to compare the effect of source (corn DDGS, rice bran, or soybean) or form of oil (extracted or intact) on apparent total tract digestibility (ATTD) and true total tract digestibility (TTTD) of acid-hydrolyzed ether extract (AEE) and fatty acids. The study determined and compared the ATTD or TTTD of AEE and fatty acids in extracted corn oil, rice oil, and soybean oil with intact oil in corn DDGS, full-fat rice bran, and full-fat soybean. Seventy-eight barrows (initial BW = 47.2 ± 3.9 kg; Duroc × Landrace × Yorkshire) were allotted to 1 of 13 dietary treatments in a randomized complete block design with 6 barrows in each dietary treatment. The 13 experimental diets included 1 cornstarch-soybean meal basal diet (AEE, 0.56%) and 3 diets containing 6% extracted oils (corn oil, rice oil, and soybean oil) and 9 diets supplemented with 3 levels of corn DDGS (17%, 34%, and 51%), full-fat rice bran (14%, 28%, and 42%), and full-fat soybean (12%, 24%, and 36%). These diets provided about 2%, 4%, and 6% intact oil, respectively. The barrows were housed in individual metabolism crates and were fed the assigned test diets at 4% of initial BW per day. A 5-d total collection of feces followed a 7-d diet adaptation period. The ATTD of AEE were calculated for each diet. The endogenous flow of AEE associated with each ingredient and values for TTTD were calculated using regression methods. The ATTD of AEE were greater ( < 0.05) for extracted oil than for intact oil. Compared to extracted oil, intact oil had lower ( < 0.01) ATTD of palmitic acid (C16:0), stearic acid (C18:0), oleic acid (C18:1), linoleic acid (C18:2), and linolenic acid (C18:3). However, a source by form interaction ( < 0.01) was observed for ATTD of C18:0, C18:2, and C18:3. The ATTD of C18:0, C18:2, and C18:3 in extracted corn and rice oil were greater compared with intact corn DDGS and rice oil ( < 0.05), while there was no significant difference for the ATTD of C18:0, C18:2, and C18:3 between extracted soybean oil and intact oil in full-fat soybean. In conclusion, lipids that are extracted have a greater digestibility compared with intact lipids, and this is especially true regarding saturated fatty acids. The ATTD of AEE in 2 forms of rice oil (intact oil and extracted oil) was less than the values in corn oil and soybean oil. The TTTD of AEE in corn DDGS and full-fat soybeans were greater than in full-fat rice bran.
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22
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Peng B, Wang C, Li H, Su YB, Ye JZ, Yang MJ, Jiang M, Peng XX. Outer Membrane Proteins form Specific Patterns in Antibiotic-Resistant Edwardsiella tarda. Front Microbiol 2017; 8:69. [PMID: 28210241 PMCID: PMC5288343 DOI: 10.3389/fmicb.2017.00069] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [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: 10/08/2016] [Accepted: 01/11/2017] [Indexed: 11/13/2022] Open
Abstract
Outer membrane proteins of Gram-negative bacteria play key roles in antibiotic resistance. However, it is unknown whether outer membrane proteins that respond to antibiotics behave in a specific manner. The present study specifically investigated the differentially expressed outer membrane proteins of an antibiotic-resistant bacterium, Edwardsiella tarda, a Gram-negative pathogen that can lead to unnecessary mass medication of antimicrobials and consequently resistance development in aquaculture and a spectrum of intestinal and extraintestinal diseases in humans. The comparison of a clinically isolated strain to the laboratory derived kanamycin-, tetracycline-, or chloramphenicol-resistant strains identified their respective outer membrane proteins expression patterns, which are distinct to each other. Similarly, the same approach was utilized to profile the patterns in double antibiotic-resistant bacteria. Surprisingly, one pattern is always dominant over the other as to these three antibiotics; the pattern of chloramphenicol is over tetracycline, which is over kanamycin. This type of pattern was also confirmed in clinically relevant multidrug-resistant bacteria. In addition, the presence of plasmid encoding antibiotic-resistant genes also alters the outer membrane protein profile in a similar manner. Our results demonstrate that bacteria adapt the antibiotic stress through the regulation of outer membrane proteins expression. And more importantly, different outer membrane protein profiles were required to cope with different antibiotics. This type of specific pattern provides the rationale for the development of novel strategy to design outer membrane protein arrays to identify diverse multidrug resistance profiles as biomarkers for clinical medication.
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Affiliation(s)
- Bo Peng
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, Guangdong Province Key Laboratory for Pharmaceutical Functional Genes, School of Life Sciences, Sun Yat-sen University Guangzhou, China
| | - Chao Wang
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, Guangdong Province Key Laboratory for Pharmaceutical Functional Genes, School of Life Sciences, Sun Yat-sen University Guangzhou, China
| | - Hui Li
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, Guangdong Province Key Laboratory for Pharmaceutical Functional Genes, School of Life Sciences, Sun Yat-sen University Guangzhou, China
| | - Yu-Bin Su
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, Guangdong Province Key Laboratory for Pharmaceutical Functional Genes, School of Life Sciences, Sun Yat-sen University Guangzhou, China
| | - Jin-Zhou Ye
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, Guangdong Province Key Laboratory for Pharmaceutical Functional Genes, School of Life Sciences, Sun Yat-sen University Guangzhou, China
| | - Man-Jun Yang
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, Guangdong Province Key Laboratory for Pharmaceutical Functional Genes, School of Life Sciences, Sun Yat-sen University Guangzhou, China
| | - Ming Jiang
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, Guangdong Province Key Laboratory for Pharmaceutical Functional Genes, School of Life Sciences, Sun Yat-sen University Guangzhou, China
| | - Xuan-Xian Peng
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, Guangdong Province Key Laboratory for Pharmaceutical Functional Genes, School of Life Sciences, Sun Yat-sen University Guangzhou, China
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Peng B, Su YB, Li H, Han Y, Guo C, Tian YM, Peng XX. Exogenous alanine and/or glucose plus kanamycin kills antibiotic-resistant bacteria. Cell Metab 2015; 21:249-262. [PMID: 25651179 DOI: 10.1016/j.cmet.2015.01.008] [Citation(s) in RCA: 277] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 11/02/2014] [Accepted: 01/13/2015] [Indexed: 01/18/2023]
Abstract
Multidrug-resistant bacteria are an increasingly serious threat to human and animal health. However, novel drugs that can manage infections by multidrug-resistant bacteria have proved elusive. Here we show that glucose and alanine abundances are greatly suppressed in kanamycin-resistant Edwardsiella tarda by GC-MS-based metabolomics. Exogenous alanine or glucose restores susceptibility of multidrug-resistant E. tarda to killing by kanamycin, demonstrating an approach to killing multidrug-resistant bacteria. The mechanism underlying this approach is that exogenous glucose or alanine promotes the TCA cycle by substrate activation, which in turn increases production of NADH and proton motive force and stimulates uptake of antibiotic. Similar results are obtained with other Gram-negative bacteria (Vibrio parahaemolyticus, Klebsiella pneumoniae, Pseudomonas aeruginosa) and Gram-positive bacterium (Staphylococcus aureus), and the results are also reproduced in a mouse model for urinary tract infection. This study establishes a functional metabolomics-based strategy to manage infection by antibiotic-resistant bacteria.
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Affiliation(s)
- Bo Peng
- Center for Proteomics and Metabolomics, State Key Laboratory of Biocontrol, School of Life Sciences, MOE Key Lab Aquat Food Safety, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, People's Republic of China; Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720-8197, USA
| | - Yu-Bin Su
- Center for Proteomics and Metabolomics, State Key Laboratory of Biocontrol, School of Life Sciences, MOE Key Lab Aquat Food Safety, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Hui Li
- Center for Proteomics and Metabolomics, State Key Laboratory of Biocontrol, School of Life Sciences, MOE Key Lab Aquat Food Safety, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Yi Han
- Center for Proteomics and Metabolomics, State Key Laboratory of Biocontrol, School of Life Sciences, MOE Key Lab Aquat Food Safety, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Chang Guo
- Center for Proteomics and Metabolomics, State Key Laboratory of Biocontrol, School of Life Sciences, MOE Key Lab Aquat Food Safety, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Yao-Mei Tian
- Center for Proteomics and Metabolomics, State Key Laboratory of Biocontrol, School of Life Sciences, MOE Key Lab Aquat Food Safety, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Xuan-Xian Peng
- Center for Proteomics and Metabolomics, State Key Laboratory of Biocontrol, School of Life Sciences, MOE Key Lab Aquat Food Safety, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, People's Republic of China.
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Chen L, Shao HJ, Su YB. Coimmunization of Agaricus blazei Murill extract with hepatitis B virus core protein through DNA vaccine enhances cellular and humoral immune responses. Int Immunopharmacol 2005; 4:403-9. [PMID: 15037217 DOI: 10.1016/j.intimp.2003.12.015] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2003] [Revised: 12/05/2003] [Accepted: 12/29/2003] [Indexed: 11/30/2022]
Abstract
DNA vaccines induce protective humoral and cell-mediated immune responses in several animal models. Agaricus blazei Murill (ABM) is particularly rich in polysaccharides, and has shown particularly strong results in treating and preventing cancers. The goal of this study was to investigate whether co-immunization of the fungus ABM with hepatitis B virus (HBV) core DNA vaccine could increase the immune responses. Compared with the control mice which received hepatitis B virus core antigen (HBcAg) alone, significant increase in not only the HBcAg-specific antibody response but also T cell proliferation was observed in mice which received HBcAg DNA vaccine plus ABM extract. These results suggest that ABM extract might represent an adjuvant to improve the efficacy of DNA vaccines in vivo.
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Affiliation(s)
- L Chen
- The Key Laboratory of Cell Biology and Tumor Cell Engineering, School of Life Sciences, Xiamen University, Xiamen, PR China
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Shao HJ, Chen L, Su YB. DNA Fragment Encoding Human IL-1β 163–171 Peptide Enhances the Immune Responses Elicited in Mice by DNA Vaccine against Foot-and-Mouth Disease. Vet Res Commun 2005; 29:35-46. [PMID: 15727290 DOI: 10.1023/b:verc.0000046743.27552.19] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [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: 11/12/2022]
Abstract
DNA vaccine has been tested for protection against foot-and-mouth disease. However, the relatively low efficacy of DNA vaccine in inducing immune responses in large animals has restricted its practical use. Interleukin-1 plays an essential role in amplifying both the cellular and humoral immune responses to foreign antigens, and may therefore represent a good candidate as an adjuvant of DNA vaccines. Since the inflammatory activity of IL-I may restrict its application in DNA vaccine treatment, we explored the possibilities of augmenting immune responses without unwanted inflammatory effects using the IL-1beta fragment (amino acids (aa) 163-171), which is essential for IL-1 receptor-1 binding. The DNA fragment encoding the human IL-1beta fragment (aa 163-171) was fused to foot-and-mouth disease virus (FMDV) DNA vaccine, and injected into mice to analyse its immune response. Compared with control mice receiving FMDV DNA vaccine alone, significant increases in the FMDV-specific antibody response and also in T cell proliferation were observed in mice receiving IL-1beta (163-171)-FMDV. These results suggested that DNA fragment encoding IL-1beta 163-171 peptide might represent a good candidate for an adjuvant of FMDV DNA vaccine.
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Affiliation(s)
- H J Shao
- The Key Laboratory of Cell Biology and Tumor Cell Engineering, School of Life Sciences, Xiamen University, Xiamen, 361005, China
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Su YB, Sohn S, Krown SE, Livingston PO, Wolchok JD, Quinn C, Williams L, Foster T, Sepkowitz KA, Chapman PB. Selective CD4+ lymphopenia in melanoma patients treated with temozolomide: a toxicity with therapeutic implications. J Clin Oncol 2004; 22:610-6. [PMID: 14726505 DOI: 10.1200/jco.2004.07.060] [Citation(s) in RCA: 173] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
PURPOSE Standard schedule temozolomide (TMZ; daily for 5 days every 4 weeks) is often used in melanoma patients, but phase III data show that it is no more effective than standard dacarbazine. Extended TMZ dosing regimens may be superior by delivering the drug continuously at a higher dose over time. Using an extended dosing schedule, we noted a high incidence of lymphopenia and occasional opportunistic infections (OIs). Here we report our retrospective experience in the first 97 patients. MATERIALS AND METHODS TMZ was administered at 75 mg/m(2)/d orally for 6 weeks every 8 weeks, although nine patients were treated continuously without a break. Seventeen patients were treated with TMZ alone; 73 patients received TMZ with thalidomide; seven patients received TMZ with low-dose interferon alfa. RESULTS Median duration of TMZ treatment was 113 days; 29% received > or = 24 weeks of therapy. Lymphopenia was seen in 60% of patients (absolute lymphocyte count < 800/microL) with a median of 101 days to lymphopenia. TMZ did not cause significant neutropenia or thrombocytopenia. Lymphopenia was not more common in patients treated concomitantly with thalidomide. In all patients analyzed for lymphocyte subsets, lymphopenia induced by TMZ affected the CD4(+) compartment preferentially. There were two documented OIs (Pneumocystis and Aspergillus pneumonia) as well as other infections indicative of T-cell dysfunction in another 21 patients. CONCLUSION TMZ at this dose and schedule results in CD4(+) lymphopenia in a majority of patients that can result in OIs. Pneumocystis pneumonia prophylaxis should be considered for patients who develop sustained lymphopenia on TMZ.
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Affiliation(s)
- Y B Su
- Department of Medicine, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY 10021, USA
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Ma XY, Su YB, Zhang FR, Li JF. Effects of vitamin E on the blastogenic response of splenocytes and lipofuscin contents in the hearts and brains of aged mice. J Environ Pathol Toxicol Oncol 1996; 15:51-3. [PMID: 9037264] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Semipurified diets containing 30 or 500 ppm of dl-alpha-tocopherol (VE) were fed for 12 weeks to young (3-month-old) and old (20-month-old) Swiss mice. We measured the blastogenic response of splenocytes, the serum VE, and the lipofuscin levels in brains and hearts. We found that old mice fed with 500 ppm VE diet had a significantly higher serum VE level and blastogenic response of splenocytes to concanavalin-A (ConA) and lipopolysaccharide (LPS) than those fed with 30 ppm VE diet (p < 0.01). However, the lipofuscin level in the brains and hearts of aged mice declined substantially with the VE supplementation (heart: p < 0.001, brain: p < 0.05). Furthermore, the effects of dietary VE on the serum VE and tissue lipofuscin content in aged mice were much more obvious than in the young animals.
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Affiliation(s)
- X Y Ma
- School of Public Health, N. Bethune Medical University, P.R. China
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Wang R, Su YB, Chen YZ. [Quantitative determination of diterpene alkaloids in Aconitum karakolicum Rap. using thin layer chromatography-densitometry]. Zhong Yao Tong Bao 1988; 13:33-4, 63. [PMID: 3416387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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