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Lv X, Mou T, Hua W, Liu Y, Li X, Ma Z. Overall Description and Predictors of Disruptive Behavior Toward Nurses in the Perioperative Arena. J Perianesth Nurs 2024:S1089-9472(23)00969-3. [PMID: 38206219 DOI: 10.1016/j.jopan.2023.09.004] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 09/01/2023] [Accepted: 09/14/2023] [Indexed: 01/12/2024]
Abstract
PURPOSE To investigate the prevalence, characteristics, causes, consequences, and predictors of and responses to disruptive behavior toward nurses in the perioperative arena. DESIGN A cross-sectional design using a network questionnaire platform. METHODS Nurses in the perioperative arena were recruited online in March 2020. Data on disruptive behavior toward nurses in the past 6 months and nurses' sociodemographic and environmental factors were collected. FINDINGS Nurses (N = 496) responded validly to the survey. In total, 82.1% of participants experienced disruptive behavior. Assignment of overwhelming workloads and verbal aggression were the most common behaviors, and surgeons were the major perpetrators. Perpetrators' intrapersonal issues were the most commonly perceived causes. A positive strategy was the most common strategy adopted by participants. Further, 80.8% of participants recounted their negative experiences, and more than half of respondents (59.9%) talked with their nursing colleagues. Nearly half of respondents (45.9%) did not report disruptive behavior. Negative emotions as an immediate effect were reported by 53.1% of the participants, and the most common long-term impact was decreased passion for work. Middle age, job position, practice environment, and system help were risk factors for experiencing disruptive behavior. CONCLUSIONS The prevalence of disruptive behavior toward nurses in the perioperative arena is high, and its ramifications should not be ignored. Health care institutions should urgently implement intervention strategies to reduce disruptive behavior toward nurses.
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Affiliation(s)
- Xiaofan Lv
- Department of Operating Rooms, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China
| | - Tong Mou
- Department of Operating Rooms, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China.
| | - Wei Hua
- Department of Operating Rooms, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China.
| | - Yue Liu
- Department of Anesthesiology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China.
| | - Xueyun Li
- Department of Operating Rooms, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China.
| | - Zhengliang Ma
- Department of Anesthesiology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China.
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Deng X, Wang J, Mou T, Pan L, Li B, Du C, Wu Q. Digital single-operator cholangioscopy-guided endoluminal radiofrequency of an intraductal papillary mucinous neoplasia of the main pancreatic duct. Endoscopy 2023; 55:E1079-E1080. [PMID: 37758214 PMCID: PMC10533356 DOI: 10.1055/a-2161-3286] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/30/2023]
Affiliation(s)
- Xin Deng
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jingwen Wang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Tong Mou
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Long Pan
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Bin Li
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Chengyou Du
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Qiao Wu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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Jiang ZM, Mou T, Sun Y, Su J, Yu LY, Zhang YQ. Environmental distribution and genomic characteristics of Solirubrobacter, with proposal of two novel species. Front Microbiol 2023; 14:1267771. [PMID: 38107860 PMCID: PMC10722151 DOI: 10.3389/fmicb.2023.1267771] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 11/03/2023] [Indexed: 12/19/2023] Open
Abstract
Solirubrobacter spp. were abundant in soil samples collected from deserts and other areas with high UV radiation. In addition, a novel Solirubrobacter species, with strain CPCC 204708T as the type, was isolated and identified from sandy soil sample collected from the Badain Jaran Desert of the Inner Mongolia autonomous region. Strain CPCC 204708T was Gram-stain positive, rod-shaped, non-motile, non-spore-forming, and grew optimally at 28-30°C, pH 7.0-8.0, and in the absence of NaCl. Analysis of the 16S rRNA gene sequence of strain CPCC 204708T showed its identity within the genus Solirubrobacter, with highest nucleotide similarities (97.4-98.2%) to other named Solirubrobacter species. Phylogenetic and genomic analyses indicated that the strain was most closely related to Solirubrobacter phytolaccae KCTC 29190T, while represented a distinct species, as confirmed from physiological properties and comparison. The name Solirubrobacter deserti sp. nov. was consequently proposed, with CPCC 204708T (= DSM 105495T = NBRC 112942T) as the type strain. Genomic analyses of the Solirubrobacter spp. also suggested that Solirubrobacter sp. URHD0082 represents a novel species, for which the name Candidatus "Solirubrobacter pratensis" sp. nov. was proposed. Genomic analysis of CPCC 204708T revealed the presence of genes related to its adaptation to the harsh environments of deserts and may also harbor genes functional in plant-microbe interactions. Pan-genomic analysis of available Solirubrobacter spp. confirmed the presence of many of the above genes as core components of Solirubrobacter genomes and suggests they may possess beneficial potential for their associate plant and may be important resources for bioactive compounds.
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Affiliation(s)
- Zhu-Ming Jiang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- State Key Laboratory of Dao-di Herb, Beijing, China
| | - Tong Mou
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- State Key Laboratory of Dao-di Herb, Beijing, China
| | - Ye Sun
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jing Su
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Li-Yan Yu
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yu-Qin Zhang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- State Key Laboratory of Dao-di Herb, Beijing, China
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4
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Yan P, Luo Y, Huang Z, Mou T, Yang H, Peng D, Wu Z. Establishment of a prognostic signature based on fatty acid metabolism genes in HCC associated with hepatitis B. BMC Gastroenterol 2023; 23:390. [PMID: 37957550 PMCID: PMC10644542 DOI: 10.1186/s12876-023-03026-5] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 11/01/2023] [Indexed: 11/15/2023] Open
Abstract
BACKGROUND Hepatitis B virus (HBV)-associated hepatocellular carcinoma (HCC) is one of the most common and deadly cancer and often accompanied by varying degrees of liver damage, leading to the dysfunction of fatty acid metabolism (FAM). This study aimed to investigate the relationship between FAM and HBV-associated HCC and identify FAM biomarkers for predicting the prognosis of HBV-associated HCC. METHODS Gene Set Enrichment Analysis (GSEA) was used to analyze the difference of FAM pathway between paired tumor and adjacent normal tissue samples in 58 HBV-associated HCC patients from the Gene Expression Omnibus (GEO) database. Next, 117 HBV-associated HCC patients from The Cancer Genome Atlas (TCGA) database were analyzed to establish a prognostic signature based on 42 FAM genes. Then, the prognostic signature was validated in an external cohort consisting of 30 HBV-associated HCC patients. Finally, immune infiltration analysis was performed to evaluate the FAM-related immune cells in HBV-associated HCC. RESULTS As a result, FAM pathway was clearly downregulated in tumor tissue of HBV-associated HCC, and survival analysis demonstrated that 12 FAM genes were associated with the prognosis of HBV-associated HCC. Lasso-penalized Cox regression analysis identified and established a five-gene signature (ACADVL, ACAT1, ACSL3, ADH4 and ECI1), which showed effective discrimination and prediction for the prognosis of HBV-associated HCC both in the TCGA cohort and the validation cohort. Immune infiltration analysis showed that the high-risk group, identified by FAM signature, of HBV-associated HCC had a higher ratio of Tregs, which was associated with the prognosis. CONCLUSIONS Collectively, these findings suggest that there is a strong connection between FAM and HBV-associated HCC, indicating a potential therapeutic strategy targeting FAM to block the accumulation of Tregs into the tumor microenvironment of HBV-associated HCC.
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Affiliation(s)
- Ping Yan
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Yuzhong District, Chongqing, 400016, China
| | - Yunhai Luo
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Yuzhong District, Chongqing, 400016, China
| | - Zuotian Huang
- Department of Hepatobiliary Pancreatic Tumor Center, Chongqing University Cancer Hospital, Chongqing, 400030, China
| | - Tong Mou
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Yuzhong District, Chongqing, 400016, China
| | - Hang Yang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Yuzhong District, Chongqing, 400016, China
| | - Dadi Peng
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Yuzhong District, Chongqing, 400016, China
| | - Zhongjun Wu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Yuzhong District, Chongqing, 400016, China.
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Cao J, Mou T, Mei B, Yao P, Han C, Gong X, Song P, Jiang Z, Frauenheim T, Xiao J, Xu W. Improved Electrocatalytic Activity and Stability by Single Iridium Atoms on Iron-based Layered Double Hydroxides for Oxygen Evolution. Angew Chem Int Ed Engl 2023; 62:e202310973. [PMID: 37667678 DOI: 10.1002/anie.202310973] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/28/2023] [Accepted: 09/04/2023] [Indexed: 09/06/2023]
Abstract
Full understanding to the origin of the catalytic performance of a supported nanocatalyst from the points of view of both the active component and support is significant for the achievement of high performance. Herein, based on a model electrocatalyst of single-iridium-atom-doped iron (Fe)-based layered double hydroxides (LDH) for oxygen evolution reaction (OER), we reveal the first completed origin of the catalytic performance of such supported nanocatalysts. Specially, besides the activity enhancement of Ir sites by LDH support, the stability of surface Fe sites is enhanced by doped Ir sites: DFT calculation shows that the Ir sites can reduce the activity and enhance the stability of the nearby Fe sites; while further finite element simulations indicate, the stability enhancement of distant Fe sites could be attributed to the much low concentration of OER reactant (hydroxyl ions, OH- ) around them induced by the much fast consumption of OH- on highly active Ir sites. These new findings about the interaction between the main active components and supports are applicable in principle to other heterogeneous nanocatalysts and provide a completed understanding to the catalytic performance of heterogeneous nanocatalysts.
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Affiliation(s)
- Jing Cao
- State Key Laboratory of Electroanalytical Chemistry and Jilin Province Key Laboratory of Low Carbon Chemical Power, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
- University of Science and Technology of China, Anhui, 230026, China
| | - Tong Mou
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Dalian National Laboratory for Clean Energy, Chinese Academy of Sciences, Dalian, 116023, P. R. China
- Beijing Computational Science Research Center, Beijing, 100193, P. R. China
| | - Bingbao Mei
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201800, P. R. China
| | - Pengfei Yao
- State Key Laboratory of Electroanalytical Chemistry and Jilin Province Key Laboratory of Low Carbon Chemical Power, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
- University of Science and Technology of China, Anhui, 230026, China
| | - Ce Han
- State Key Laboratory of Electroanalytical Chemistry and Jilin Province Key Laboratory of Low Carbon Chemical Power, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
- University of Science and Technology of China, Anhui, 230026, China
| | - Xue Gong
- State Key Laboratory of Electroanalytical Chemistry and Jilin Province Key Laboratory of Low Carbon Chemical Power, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
- University of Science and Technology of China, Anhui, 230026, China
| | - Ping Song
- State Key Laboratory of Electroanalytical Chemistry and Jilin Province Key Laboratory of Low Carbon Chemical Power, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
- University of Science and Technology of China, Anhui, 230026, China
| | - Zheng Jiang
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, 230026, China
| | - Thomas Frauenheim
- Shenzhen JL Computational and Applied Research Institute, Shenzhen, 518131, P. R. China
- Bremen Center for Computational Materials Science, University of Bremen, 28359, Bremen, Germany
- Beijing Computational Science Research Center, Beijing, 100193, P. R. China
| | - Jianping Xiao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Dalian National Laboratory for Clean Energy, Chinese Academy of Sciences, Dalian, 116023, P. R. China
- Beijing Computational Science Research Center, Beijing, 100193, P. R. China
| | - Weilin Xu
- State Key Laboratory of Electroanalytical Chemistry and Jilin Province Key Laboratory of Low Carbon Chemical Power, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
- University of Science and Technology of China, Anhui, 230026, China
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Deng Y, Mou T, Wang J, Su J, Yan Y, Zhang YQ. Characterization of three rapidly growing novel Mycobacterium species with significant polycyclic aromatic hydrocarbon bioremediation potential. Front Microbiol 2023; 14:1225746. [PMID: 37744919 PMCID: PMC10517868 DOI: 10.3389/fmicb.2023.1225746] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 08/28/2023] [Indexed: 09/26/2023] Open
Abstract
Mycobacterium species exhibit high bioremediation potential for the degradation of polycyclic aromatic hydrocarbons (PAHs) that are significant environmental pollutants. In this study, three Gram-positive, rapidly growing strains (YC-RL4T, MB418T, and HX176T) were isolated from petroleum-contaminated soils and were classified as Mycobacterium within the family Mycobacteriaceae. Genomic average nucleotide identity (ANI; < 95%) and digital DNA-DNA hybridization (dDDH; < 70%) values relative to other Mycobacterium spp. indicated that the strains represented novel species. The morphological, physiological, and chemotaxonomic characteristics of the isolates also supported their affiliation with Mycobacterium and their delineation as novel species. The strains were identified as Mycobacterium adipatum sp. nov. (type strain YC-RL4T = CPCC 205684T = CGMCC 1.62027T), Mycobacterium deserti sp. nov. (type strain MB418T = CPCC 205710T = KCTC 49782T), and Mycobacterium hippophais sp. nov. (type strain HX176T = CPCC 205372T = KCTC 49413T). Genes encoding enzymes involved in PAH degradation and metal resistance were present in the genomes of all three strains. Specifically, genes encoding alpha subunits of aromatic ring-hydroxylating dioxygenases were encoded by the genomes. The genes were also identified as core genes in a pangenomic analysis of the three strains along with 70 phylogenetically related mycobacterial strains that were previously classified as Mycolicibacterium. Notably, strain YC-RL4T could not only utilize phthalates as their sole carbon source for growth, but also convert di-(2-ethylhexyl) phthalate into phthalic acid. These results indicated that strains YC-RL4T, MB418T, and HX176T were important resources with significant bioremediation potential in soils contaminated by PAHs and heavy metals.
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Affiliation(s)
- Yang Deng
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- State Key Laboratory of Dao-di Herbs, Beijing, China
| | - Tong Mou
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- State Key Laboratory of Dao-di Herbs, Beijing, China
| | - Junhuan Wang
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jing Su
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yanchun Yan
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yu-Qin Zhang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- State Key Laboratory of Dao-di Herbs, Beijing, China
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Zong K, Peng D, Jiang P, Li Y, Cao Z, Wu Z, Mou T, Huang Z, Shen A, Wu Z, Zhou B. Derivation and validation of a novel preoperative risk prediction model for surgical site infection in pancreaticoduodenectomy and comparison of preoperative antibiotics with different risk stratifications in retrospective cohort. J Hosp Infect 2023; 139:228-237. [PMID: 37459915 DOI: 10.1016/j.jhin.2023.07.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 07/05/2023] [Accepted: 07/07/2023] [Indexed: 08/14/2023]
Abstract
BACKGROUND Surgical site infections (SSIs) are common postoperative complications of pancreaticoduodenectomy. AIM To develop a model for preoperative identification of the risk of SSI that may improve outcomes and guide preoperative antibiotics. METHODS The prediction model was built by meta-analysis. After literature search and inclusion, data extraction, and quantitative synthesis, the prediction model was established based on the pooled odds ratio of predictors. A single-centre retrospective cohort was the validation cohort. Receiver operating characteristic curves and area under the curve were used to assess the model's ability. We also created a decision curve and a calibration plot to assess the nomogram. The effects of prophylactic antibiotics on SSI were compared between groups by multivariable logistic regression with different risk stratifications. FINDINGS Twenty-eight studies were included in the meta-analysis, 17 studies in the derivation cohort. Age, male gender, body mass index, pancreatic duct diameter, high-risk diagnosis, and preoperative biliary drainage were selected to build the prediction model. The model was validated in an external cohort. The cut-off value was 3.5 and area under the curve (AUC) was 0.76 in open pancreaticoduodenectomy (OPD). In laparoscopic pancreaticoduodenectomy, the cut-off value was 4.5 and AUC was 0.69. Decision curve and calibration plot showed good usability of the model, especially in OPD. Multivariable logistic regression did not indicate differences between broad- and narrow-spectrum antibiotics for SSI in different risk stratifications. CONCLUSION The model can identify patients with a high risk of SSI preoperatively. The choice of prophylactic antibiotics under different risk stratifications should be investigated further.
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Affiliation(s)
- K Zong
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - D Peng
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - P Jiang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Y Li
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Z Cao
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Z Wu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - T Mou
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Z Huang
- Department of Hepatobiliary Pancreatic Tumor Center, Chongqing University Cancer Hospital, Chongqing, China
| | - A Shen
- Department of Hepatobiliary Pancreatic Tumor Center, Chongqing University Cancer Hospital, Chongqing, China
| | - Z Wu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
| | - B Zhou
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
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Deng X, Wang J, Mou T, Pan L, Du C, Wu Q. Case report: Single-operator peroral cholangioscopy system (SpyGlass) diagnosis of an extrahepatic biliary cystadenoma (video). Front Med (Lausanne) 2023; 10:1175034. [PMID: 37425323 PMCID: PMC10327893 DOI: 10.3389/fmed.2023.1175034] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 05/17/2023] [Indexed: 07/11/2023] Open
Abstract
Biliary cystadenoma is a type of rare liver cystic tumor. Intrahepatic biliary cystadenomas are the most common, while extrahepatic biliary cystadenomas are rarely seen. Biliary cystadenoma tends to occur in middle-aged to older women and there is a lack of specific preoperative diagnostic markers. Recent advancements in technology and the development of the SpyGlass system have led to an increased use of cholangioscopy. Herein, we report a patient in whom a space-occupying lesion was found in the bile duct by SpyGlass, and who later underwent radical surgery. The pathology report indicated that the final diagnosis was biliary cystadenoma. SpyGlass cholangioscopy may be a novel and effective diagnostic method for biliary cystadenoma.
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Affiliation(s)
- Xin Deng
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jingwen Wang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Tong Mou
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Long Pan
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Chengyou Du
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Qiao Wu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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9
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Lu J, Mou T, Wang C, Huang H, Han W. Research on Hysteretic Behavior of FRP-Confined Concrete Core-Encased Rebar. Polymers (Basel) 2023; 15:2728. [PMID: 37376375 DOI: 10.3390/polym15122728] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 06/16/2023] [Accepted: 06/17/2023] [Indexed: 06/29/2023] Open
Abstract
FRP-confined concrete core-encased rebar (FCCC-R) is a novel composite structure that has recently been proposed to effectively delay the buckling of ordinary rebar and enhance its mechanical properties by utilizing high-strength mortar or concrete and an FRP strip to confine the core. The purpose of this study was to study the hysteretic behavior of FCCC-R specimens under cyclic loading. Different cyclic loading systems were applied to the specimens and the resulting test data were analyzed and compared, in addition to revealing the mechanism of elongation and mechanical properties of the specimens under the different loading systems. Furthermore, finite-element simulation was performed for different FCCC-Rs using the ABAQUS software. The finite-element model was also used for the expansion parameter studies to analyze the effects of different influencing factors, including the different winding layers, winding angles of the GFRP strips, and the rebar-position eccentricity, on the hysteretic properties of FCCC-R. The test result indicates that FCCC-R exhibits superior hysteretic properties in terms of maximum compressive bearing capacity, maximum strain value, fracture stress, and envelope area of the hysteresis loop when compared to ordinary rebar. The hysteretic performance of FCCC-R increases as the slenderness ratio is increased from 10.9 to 24.5 and the constraint diameter is increased from 30 mm to 50 mm, respectively. Under the two cyclic loading systems, the elongation of the FCCC-R specimens is greater than that of ordinary rebar specimens with the same slenderness ratio. For different slenderness ratios, the range of maximum elongation improvement is about 10% to 25%, though there is still a large discrepancy compared to the elongation of ordinary rebar under monotonic tension. Despite the maximum compressive bearing capacity of FCCC-R is improved under cyclic loading, the internal rebars are more prone to buckling. The results of the finite-element simulation are in good agreement with the experimental results. According to the study of expansion parameters, it is found that the hysteretic properties of FCCC-R increase as the number of winding layers (one, three, and five layers) and winding angles (30°, 45°, and 60°) in the GFRP strips increase, while they decrease as the rebar-position eccentricity (0.15, 0.22, and 0.30) increases.
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Affiliation(s)
- Jingzhou Lu
- School of Civil Engineering, Yantai University, Yantai 264005, China
| | - Tong Mou
- School of Civil Engineering, Yantai University, Yantai 264005, China
| | - Chen Wang
- School of Civil Engineering, Yantai University, Yantai 264005, China
| | - Han Huang
- School of Civil Engineering, Yantai University, Yantai 264005, China
| | - Wenyu Han
- School of Civil Engineering, Yantai University, Yantai 264005, China
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Liu B, Wang J, Wang G, Jiang W, Li Z, Shi Y, Zhang J, Pei Q, Huang G, Wang L, Zhao S, Wu L, Zhang M, Wang W, Li X, Mou T, Zhang C, Ding Q. Hepatocyte-derived exosomes deliver H2AFJ to hepatic stellate cells and promote liver fibrosis via the MAPK/STMN1 axis activation. Int Immunopharmacol 2023; 115:109605. [PMID: 36608439 DOI: 10.1016/j.intimp.2022.109605] [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: 09/11/2022] [Revised: 12/12/2022] [Accepted: 12/13/2022] [Indexed: 01/06/2023]
Abstract
Hepatic stellate cells (HSCs) activate and acquire proliferative features in response to liver injury. However, mechanisms involved in the activation of fibrotic HSCs remain uncharacterized. This study aims at elaborating the mechanistic basis by which exosomal H2AFJ derived from hepatocytes might affect the activation of HSCs and liver fibrosis. Bioinformatics analysis based on transcriptomic RNA-seq data was used to screen out the downstream regulatory genes and pathways of H2AFJ. Mouse hepatocytes AML-12 cells were stimulated with CCl4 to mimic an in vitro microenvironment of liver fibrosis, from which exosomes were isolated. Next, HSCs were co-cultured with hepatocyte-derived exosomes followed by detection of HSC migration and invasion in the presence of manipulated H2AFJ and STMN1 expression and MAPK pathway inhibitor. It was found that H2AFJ was highly expressed in hepatocyte-derived exosomes after CCl4 stimulation. Hepatocyte-derived exosomal H2AFJ promoted HSC migration and invasion. H2AFJ upregulated c-jun-mediated STMN1 by activating the MAPK signaling pathway. Furthermore, in vivo experiments verified that silencing of H2AFJ attenuated liver fibrosis in mice, while restoration of STMN1 negated its effect. Collectively, hepatocyte-derived exosomal H2AFJ aggravated liver fibrosis by activating the MAPK/STMN1 signaling pathway. This study provides a potential therapeutic target for alleviating liver fibrosis.
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Affiliation(s)
- Bin Liu
- Department of Critical Care Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, PR China
| | - Jinchao Wang
- Department of Neurosurgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, PR China
| | - Guangchuan Wang
- Department of Gastroenterology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, PR China
| | - Wanli Jiang
- First Clinical School of Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250355, PR China
| | - Zhen Li
- Department of Gastroenterology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, PR China
| | - Yongjun Shi
- Department of Gastroenterology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, PR China
| | - Junyong Zhang
- Department of Gastroenterology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, PR China
| | - Qingshan Pei
- Department of Gastroenterology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, PR China
| | - Guangjun Huang
- Department of Gastroenterology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, PR China
| | - Lifen Wang
- Department of Gastroenterology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, PR China
| | - Shengqiang Zhao
- Department of Gastroenterology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, PR China
| | - Lei Wu
- Department of Gastroenterology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, PR China
| | - Mingyan Zhang
- Department of Gastroenterology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, PR China
| | - Wenwen Wang
- Department of Gastroenterology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, PR China
| | - Xiao Li
- Department of Gastroenterology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, PR China
| | - Tong Mou
- Department of Gastroenterology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, PR China
| | - Chunqing Zhang
- Department of Gastroenterology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, PR China
| | - Qian Ding
- Department of Gastroenterology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, PR China.
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Zhou J, Shi K, Huang W, Zhang Y, Chen Q, Mou T, Wu Z, Wei X. LncRNA RPPH1 acts as a molecular sponge for miR-122 to regulate Wnt1/β-catenin signaling in hepatocellular carcinoma. Int J Med Sci 2023; 20:23-34. [PMID: 36619232 PMCID: PMC9812802 DOI: 10.7150/ijms.68778] [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] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 11/06/2022] [Indexed: 12/23/2022] Open
Abstract
This study aimed to explore the role of lncRNA RPPH1 in hepatocellular carcinoma. The expression of RPPH1 and miR-122 was determined by Real-time PCR. Cell proliferation and colony formation assays were employed to monitor cell growth in vitro. Wound healing and Transwell assays were applied to detect cell migration and invasion. A dual-luciferase reporter assay was used to verify the interaction between RPPH1 and miR-122. The in vivo function of RPPH1 was illustrated by xenograft tumor models. The results showed that the expression of RPPH1 was markedly upregulated in human HCC specimens and cell lines compared to normal controls. However, the trend of miR-122 was the opposite. RPPH1 facilitates the proliferation, migration, and invasion of HCC cells and synchronously suppresses cell apoptosis. The dual-luciferase assay confirmed the relationship between RPPH1 and miR-122. Rescue experiments showed that RPPH1 acted as a competing endogenous RNA (ceRNA) by sponging miR-122 in HCC cells. Moreover, RPPH1 positively regulated the expression of Wnt1 and its downstream targets through miR-122. Our study demonstrates for the first time that RPPH1 promotes HCC progression via the miR-122/Wnt1/β-catenin axis, which may represent a valuable therapeutic target for patients with HCC.
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Affiliation(s)
- Jian Zhou
- Department of Hepatobiliary Surgery, The People's Hospital of Rongchang District, Chongqing, China.,Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Kun Shi
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Weifeng Huang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yuke Zhang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Qingsong Chen
- Department of Traumatology, Chongqing University Central Hospital, Chongqing, China
| | - Tong Mou
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zhongjun Wu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xufu Wei
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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12
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Peng D, Zong K, Yang H, Huang Z, Mou T, Jiang P, Wu Z. Malnutrition diagnosed by the Global Leadership Initiative on Malnutrition criteria predicting survival and clinical outcomes of patients with cancer: A systematic review and meta-analysis. Front Nutr 2022; 9:1053165. [PMID: 36562033 PMCID: PMC9763567 DOI: 10.3389/fnut.2022.1053165] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Accepted: 11/04/2022] [Indexed: 12/12/2022] Open
Abstract
Objectives Recently, some cohorts have looked into the use of Global Leadership Initiative on Malnutrition (GLIM) criteria in cancer patients. The objective of the current meta-analysis was to determine its utility in predicting clinical and survival outcomes for cancer patients. Method Searching and screening literature from PubMed, Web of Science and Embase until September 13, 2022 was performed by two researchers independently. According to the exclusion and inclusion criteria, articles reporting the impact of malnutrition diagnosed by GLIM on long-term survival and clinical outcomes were included. Data of interest were also extracted from the included papers. The stability of the pooled results was evaluated using sensitivity analysis. With the aid of subgroup analysis, heterogeneity was revealed. To assess publication bias, Egger's and Begg's tests were conducted. The influence of publication bias on the pooling risk estimate was examined using a trim-and-fill analysis. Results 15 studies that qualified for our study were identified. Pooled hazard ratio (HR) from both multivariate and univariate regression analysis showed a worse overall survival in GLIM-defined malnourished cancer patients than those in well-nourished status. Meanwhile, disease-free survival was also poorer in malnourished patients. Moreover, pooled odds ratio (OR) demonstrated that malnourished cancer patients were more likely to develop overall postoperative complications, complications ≥ Clavien-Dindo grade IIa and complications ≥ Clavien-Dindo grade IIIa. Two articles reported negative relation between GLIM-defined malnutrition and 30-day readmission/mortality. Conclusion GLIM-defined malnutrition possesses value in predicting poorer survival and clinical outcomes for cancer patients. Systematic review registration [https://www.crd.york.ac.uk/PROSPERO/display_record.php?RecordID=321094], identifier [CRD42022321094].
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Affiliation(s)
- Dadi Peng
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Kezhen Zong
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Hang Yang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zuotian Huang
- Department of Hepatobiliary Pancreatic Tumor Center, Chongqing University Cancer Hospital, Chongqing, China
| | - Tong Mou
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Puen Jiang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zhongjun Wu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China,*Correspondence: Zhongjun Wu,
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Mou T, Wang Y, Deák P, Li H, Long J, Fu X, Zhang B, Frauenheim T, Xiao J. Predictive Theoretical Model for the Selective Electroreduction of Nitrate to Ammonia. J Phys Chem Lett 2022; 13:9919-9927. [PMID: 36256962 DOI: 10.1021/acs.jpclett.2c02452] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The electrochemical reduction of nitrate (eNO3RR) emerges as a promising route for decentralized ammonia synthesis. However, the competitive production of nitrite at low overpotentials is a challenging issue. Herein, using the combination of density functional theory and microkinetic modeling, we show that the selectivity for NH3 surpasses that of NO2- at -0.66 VRHE, which nicely reproduced the experimental value on titania. NH2OH* → NH2* is the kinetically controlling step at a low overpotential for NH3 generation, while NO2* → HNO2 has the highest barrier to producing nitrite. Based on these mechanistic insights, we suggest that ΔG1 (NH2OH* → NH2*) - ΔG2 (NO2* → HNO2) can serve as a descriptor to predict the S(NO2-)/S(NH3) crossover potential. Such a model is verified by the experimental results on Ag, Cu, TiO2-x, Fe3O4, and Fe-MoS2 and can be extended to the Au catalyst. Thus, this work sheds light on the rational design of catalysts that are simultaneously energy-efficient and selective to NH3.
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Affiliation(s)
- Tong Mou
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Dalian National Laboratory for Clean Energy, Chinese Academy of Sciences, Dalian116023, P. R. China
- Shenzhen JL Computational and Applied Research Institute, Shenzhen518131, P. R. China
- Bremen Center for Computational Materials Science, University of Bremen, Bremen28359, Germany
| | - Yuting Wang
- School of Science, Institute of Molecular Plus, Tianjin University, Tianjin300072, P. R. China
| | - Peter Deák
- Bremen Center for Computational Materials Science, University of Bremen, Bremen28359, Germany
| | - Huan Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Dalian National Laboratory for Clean Energy, Chinese Academy of Sciences, Dalian116023, P. R. China
- University of Chinese Academy of Sciences, Beijing100049, P. R. China
| | - Jun Long
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Dalian National Laboratory for Clean Energy, Chinese Academy of Sciences, Dalian116023, P. R. China
| | - Xiaoyan Fu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Dalian National Laboratory for Clean Energy, Chinese Academy of Sciences, Dalian116023, P. R. China
| | - Bin Zhang
- School of Science, Institute of Molecular Plus, Tianjin University, Tianjin300072, P. R. China
| | - Thomas Frauenheim
- Shenzhen JL Computational and Applied Research Institute, Shenzhen518131, P. R. China
- Bremen Center for Computational Materials Science, University of Bremen, Bremen28359, Germany
- Beijing Computational Science Research Center, Beijing100193, P. R. China
| | - Jianping Xiao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Dalian National Laboratory for Clean Energy, Chinese Academy of Sciences, Dalian116023, P. R. China
- University of Chinese Academy of Sciences, Beijing100049, P. R. China
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Zong K, Peng D, Yang H, Huang Z, Luo Y, Wang Y, Xiang S, Li T, Mou T, Wu Z. Risk Factors for Weak Antibody Response of SARS-CoV-2 Vaccine in Adult Solid Organ Transplant Recipients: A Systemic Review and Meta-Analysis. Front Immunol 2022; 13:888385. [PMID: 35774786 PMCID: PMC9237843 DOI: 10.3389/fimmu.2022.888385] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 05/05/2022] [Indexed: 01/05/2023] Open
Abstract
ObjectiveThis is the first systematic review and meta-analysis to determine the factors that contribute to poor antibody response in organ transplant recipients after receiving the 2-dose severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccine.MethodData was obtained from Embase, PubMed, Web of Science, Cochrane Library, China National Knowledge Infrastructure (CNKI), and Chinese Biomedical Literature Database (CBM). Studies reporting factors associated with antibody responses to the 2-dose SARS-CoV-2 vaccine in solid organ transplant recipients were included in our study based on the inclusion and exclusion criteria. Two researchers completed the literature search, screening, and data extraction. Randomized models were used to obtain results. Egger’s test was performed to determine publication bias. Sensitivity analysis was performed to determine the stability of the result. The heterogeneity was determined using the Galbraith plot and subgroup analysis.ResultsA total of 29 studies were included in the present study. The factors included living donor, BNT162b2, tacrolimus, cyclosporine, antimetabolite, mycophenolic acid (MPA) or mycophenolate mofetil (MMF), azathioprine, corticosteroids, high-dose corticosteroids, belatacept, mammalian target of rapamycin (mTOR) inhibitor, tritherapy, age, estimated glomerular filtration rate (eGFR), hemoglobin, and tacrolimus level were significantly different. Multivariate analysis showed significant differences in age, diabetes mellitus, MPA or MMF, high-dose corticosteroids, tritherapy, and eGFR.ConclusionThe possible independent risk factors for negative antibody response in patients with organ transplants who received the 2-dose SARS-CoV-2 vaccine include age, diabetes mellitus, low eGFR, MPA or MMF, high-dose corticosteroids, and triple immunosuppression therapy. mTOR inhibitor can be a protective factor against weak antibody response.Systematic Review RegistrationPROSPERO, identifier CRD42021257965.
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15
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Huang J, Tan X, Li C, Wu R, Ran S, Tao Y, Mou T. Green Synthesis of Au-NPs on g-C 3N 4 Hybrid Nanomaterials Based on Supramolecular Pillar[6]arene and Its Applications for Catalysis. ACS Omega 2022; 7:18085-18093. [PMID: 35664603 PMCID: PMC9161382 DOI: 10.1021/acsomega.2c01603] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 05/06/2022] [Indexed: 06/14/2023]
Abstract
Gold nanoparticles (Au NPs) are installed in situ on the surfaces of graphitic carbon nitride (g-C3N4) based on supramolecular hydroxylatopillar[6]arene (P6). The Au NPs can be obtained via the redox reaction between HAuCl4 and P6 without any NH2-NH2, NaBH4, and other reductants, where AuCl4 - is reduced to Au0 by the -OH groups in the presence of OH-, and the -OH groups are oxidized into -COOH. First, P6 is loaded onto the surface of g-C3N4 via π-π interaction between P6 and g-C3N4, which offers a stabilized and reduced site for in situ anchoring of Au NPs. The hybrid nanomaterial Au-NPs@P6@g-C3N4 exhibits higher catalytic capability than the Pd/C catalyst in 4-nitrophenol (4-NP) reduction and methylene blue degradation, which opens a new avenue for designing more efficient hybrid nanomaterials for application in catalysis, sensing, and other fields.
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Affiliation(s)
- Juncao Huang
- Chongqing Preschool Education College, Chongqing 404047, P. R. China
| | - Xiaoping Tan
- Chongqing Preschool Education College, Chongqing 404047, P. R. China
- School of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing 408100, P. R. China
| | - Chaofan Li
- Chongqing Preschool Education College, Chongqing 404047, P. R. China
| | - Rui Wu
- School of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing 408100, P. R. China
| | - Shuqin Ran
- School of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing 408100, P. R. China
| | - Yuxin Tao
- School of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing 408100, P. R. China
| | - Tong Mou
- School of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing 408100, P. R. China
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Li T, Chen Q, Dai J, Huang Z, Luo Y, Mou T, Pu J, Yang H, Wei X, Wu Z. MicroRNA-141-3p attenuates oxidative stress-induced hepatic ischemia reperfusion injury via Keap1/Nrf2 pathway. Mol Biol Rep 2022; 49:7575-7585. [DOI: 10.1007/s11033-022-07570-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 05/05/2022] [Indexed: 11/30/2022]
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17
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Liu Y, Pu X, Qin X, Gong J, Huang Z, Luo Y, Mou T, Zhou B, Shen A, Wu Z. Neutrophil Extracellular Traps Regulate HMGB1 Translocation and Kupffer Cell M1 Polarization During Acute Liver Transplantation Rejection. Front Immunol 2022; 13:823511. [PMID: 35603144 PMCID: PMC9120840 DOI: 10.3389/fimmu.2022.823511] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 03/23/2022] [Indexed: 02/05/2023] Open
Abstract
Neutrophil extracellular traps (NETs) play important roles in hepatic ischemic reperfusion injury (IRI) and acute rejection (AR)-induced immune responses to inflammation. After liver transplantation, HMGB1, an inflammatory mediator, contributes to the development of AR. Even though studies have found that HMGB1 can promote NET formation, the correlation between NETs and HMGB1 in the development of AR following liver transplantation has not been elucidated. In this study, levels of serum NETs were significantly elevated in patients after liver transplantation. Moreover, we found that circulating levels of NETs were negatively correlated with liver function. In addition, liver transplantation and elevated extracellular HMGB1 promoted NET formation. The HMGB1/TLR-4/MAPK signaling pathway, which is initiated by HMGB1, participates in NET processes. Moreover, in the liver, Kupffer cells were found to be the main cells secreting HMGB1. NETs induced Kupffer cell M1 polarization and decreased the intracellular translocation of HMGB1 by inhibiting DNase-1. Additionally, co-treatment with TAK-242 (a TLR-4 inhibitor) and rapamycin more effectively alleviated the damaging effects of AR following liver transplantation than either drug alone.
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Affiliation(s)
- Yanyao Liu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xingyu Pu
- Department of Liver Surgery and Liver Transplantation Center, West China Hospital of Sichuan University, Chengdu, China
| | - Xiaoyan Qin
- Department of General Surgery and Trauma Surgery, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Children Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Children Health and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing, China
| | - Junhua Gong
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zuotian Huang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yunhai Luo
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Tong Mou
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Baoyong Zhou
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Ai Shen
- Department of Hepatobiliary Pancreatic Tumor Center, Chongqing University Cancer Hospital, Chongqing, China
| | - Zhongjun Wu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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Mou T, Quiroz J, Camargo PHC, Wang B. Localized Orbital Excitation Drives Bond Formation in Plasmonic Catalysis. ACS Appl Mater Interfaces 2021; 13:60115-60124. [PMID: 34874713 DOI: 10.1021/acsami.1c21607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Localized surface plasmons generated on metallic nanostructures can be used to accelerate molecular transformations; however, the efficiency is limited by the challenge to control the energy/charge transfer at the interfaces. Here, we combine density functional theory (DFT) calculations and experiments to reveal the mechanism of nitrophenol reduction on Au nanoparticles under visible-light irradiation and propose a strategy to further enhance the reaction rates. DFT calculations show a reduced activation barrier under electronic excitation on Au(111), thus explaining the measured higher rates under visible-light irradiation. Furthermore, we propose a heterostructure with Au nanoparticles covered by a thin film of hexagonal boron nitride; the latter is used to decouple the molecular orbitals from the metal to enable charge localization in the molecule. DFT calculations show that by this electronic decoupling, the activation barrier can be lowered by a factor of five. This work thus provides a valuable strategy for optimizing catalytic efficiency in plasmonic photocatalysis.
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Affiliation(s)
- Tong Mou
- Center for Interfacial Reaction Engineering and School of Chemical, Biological and Materials Engineering, Gallogly College of Engineering, University of Oklahoma, Norman, Oklahoma 73019, United States
- Shenzhen JL Computational Science and Applied Research Institute, Shenzhen, Guangdong 518131, China
| | - Jhon Quiroz
- Department of Chemistry, University of Helsinki, 00560 Helsinki, Finland
| | - Pedro H C Camargo
- Department of Chemistry, University of Helsinki, 00560 Helsinki, Finland
| | - Bin Wang
- Center for Interfacial Reaction Engineering and School of Chemical, Biological and Materials Engineering, Gallogly College of Engineering, University of Oklahoma, Norman, Oklahoma 73019, United States
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Li G, Zhao Z, Mou T, Tan Q, Wang B, Resasco D. Experimental and computational kinetics study of the liquid-phase hydrogenation of C C and C O bonds. J Catal 2021. [DOI: 10.1016/j.jcat.2021.09.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Luo Y, Zheng D, Mou T, Pu J, Huang Z, Chen W, Zhang Y, Wu Z. CMPK2 accelerates liver ischemia/reperfusion injury via the NLRP3 signaling pathway. Exp Ther Med 2021; 22:1358. [PMID: 34659504 PMCID: PMC8515557 DOI: 10.3892/etm.2021.10793] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 03/15/2021] [Indexed: 12/12/2022] Open
Abstract
Cytidine monophosphate kinase 2 (CMPK2) is a mitochondrial nucleotide monophosphate kinase which is important for the substrates of mitochondrial DNA synthesis and has been reported to participate in macrophage activation and the inflammatory response. The purpose of the present research was to determine the potential role of CMPK2 in hepatic ischemia/reperfusion (I/R) injury and to elucidate the underlying molecular mechanisms. The present study investigated the role of CMPK2 in regulating the NLRP3 pathway and liver dysfunction induced by hepatic I/R both in vivo and in vitro. It was revealed that hypoxia/reoxygenation (H/R) treatment enhanced the mRNA expression levels of CMPK2, NLRP3, IL-18, IL-1β and TNF-α in RAW 264.7 cells. The protein expression levels of IL-18, IL-1β and cleaved-caspase-1 were decreased following CMPK2 knockdown. Furthermore, the inhibition of AIM2 downregulated the expression level of IL-1β, IL-18 and cleaved-caspase-1 in the CMPK2 knockdown group followed by H/R treatment, while the inhibition of NLRP3 did not. CMPK2 deficiency also decreased alanine aminotransferase and aspartate aminotransferase expression in mice serum, as well as the pathological changes in the liver. Similarly, the release of IL-18 and IL-1β in mouse serum was also restrained with the decline of CMPK2. In conclusion, the results of the present study demonstrate that CMPK2 is indispensable for NLRP3 inflammasome activation, making CMPK2 an effective target to relieve the liver from I/R injury. In addition, the function of CMPK2 is closely associated with NLRP3 inflammasome activation, instead of AIM2.
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Affiliation(s)
- Yunhai Luo
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | - Daofeng Zheng
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | - Tong Mou
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | - Junliang Pu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | - Zuotian Huang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | - Wei Chen
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | - Yuke Zhang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | - Zhongjun Wu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
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Mou T, Long J, Frauenheim T, Xiao J. Advances in Electrochemical Ammonia Synthesis Beyond the Use of Nitrogen Gas as a Source. Chempluschem 2021; 86:1211-1224. [PMID: 34448548 DOI: 10.1002/cplu.202100356] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 08/19/2021] [Indexed: 11/09/2022]
Abstract
Electrocatalytic reduction of dinitrogen has emerged as a new strategy for ammonia synthesis. Despite being environmentally benign and energy-saving, it suffers from low conversion efficiency and short yield of ammonia because of the challenges of activating the inert N≡N bond at room temperature and atmospheric pressure. As a result of this, researchers proposed to reduce the nitrogenous species, one category of air and water pollutants, into valuable ammonia. Although remaining largely underexplored, this alternative approach shows promising efficiency for ammonia synthesis, while achieving high catalytic activity and selectivity remains challenging. In this Minireview, we summarize recent electrocatalytic performances of denitrification with selective formation to ammonia in terms of proposed active sites and reaction mechanisms. Additionally, we discuss the common issues in the state-of-the-art experimental tests and highlight the breakthroughs via computational screening of electrode materials. The aim of this is to steer the future research directions in the field, which is aiming for an optimal catalytic system with higher activity and selectivity for electrocatalytic denitrification.
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Affiliation(s)
- Tong Mou
- Shenzhen JL Computational Science and Applied Research Institute, Shenzhen, 518109, P. R. China
| | - Jun Long
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian, 116023, P. R. China
| | - Thomas Frauenheim
- Shenzhen JL Computational Science and Applied Research Institute, Shenzhen, 518109, P. R. China
- Bremen Center for Computational Materials Science, University of Bremen, Am Fallturm 1, 28359, Bremen, Germany
| | - Jianping Xiao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian, 116023, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
- Dalian National Laboratory for Clean Energy, Dalian, 116023, P. R. China
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22
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Pu JL, Huang ZT, Luo YH, Mou T, Li TT, Li ZT, Wei XF, Wu ZJ. Fisetin mitigates hepatic ischemia-reperfusion injury by regulating GSK3β/AMPK/NLRP3 inflammasome pathway. Hepatobiliary Pancreat Dis Int 2021; 20:352-360. [PMID: 34024736 DOI: 10.1016/j.hbpd.2021.04.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [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: 01/08/2021] [Accepted: 04/27/2021] [Indexed: 02/05/2023]
Abstract
BACKGROUND Hepatic ischemia-reperfusion (I/R) injury (IRI) represents a crucial challenge in liver transplantation. Fisetin has anti-inflammatory, anti-aging and anti-oxidative properties. This study aimed to examine whether fisetin mitigates hepatic IRI and examine its underlying mechanisms. METHODS Sham or warm hepatic I/R operated mice were pretreated with fisetin (5, 10 or 20 mg/kg). Hepatic histological assessments, TUNEL assays and serum aminotransferase measurements were performed. An in vitro hypoxia/reoxygenation (H/R) model using RAW264.7 macrophages pretreated with fisetin (2.5, 5 or 10 µmol/L) was also used. Serum and cell supernatant concentrations of interleukin-1β (IL-1β), IL-18 and tumor necrosis factor-α (TNF-α) were determined by enzyme-linked immunosorbent assay (ELISA). Protein levels of p-GSK3β, p-AMPK and NLR family pyrin domain-containing 3 (NLRP3)-associated proteins were detected by Western blotting. RESULTS Compared with the I/R group, fisetin pretreatment reduced pathological liver damage, serum aminotransferase levels, serum concentrations of IL-1β, IL-18 and TNF-α in the murine IRI model. Fisetin also reduced the expression of NLRP3 inflammasome-associated proteins (NLRP3, cleaved caspase-1, IL-1β and IL-18) in I/R-operated liver. The experiments in vitro showed that fisetin decreased the release of IL-1β, IL-18 and TNF-α, and reduced the expression of NLRP3 inflammasome-associated proteins in H/R-treated RAW264.7 cells. Moreover, fisetin increased the expressions of p-GSK3β and p-AMPK in both models, indicating that its anti-inflammatory effects were dependent on GSK3β/AMPK signaling. The anti-inflammatory effects of fisetin were partially inhibited by the AMPK specific inhibitor compound C. CONCLUSIONS Fisetin showed protective effects against hepatic IRI, countering inflammatory responses through mediating the GSK3β/AMPK/NLRP3 inflammasome pathway.
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Affiliation(s)
- Jun-Liang Pu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Zuo-Tian Huang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Yun-Hai Luo
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Tong Mou
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Ting-Ting Li
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Zhong-Tang Li
- Department of Anatomy, Basic Medical College, Chongqing Medical University, Chongqing 400016, China
| | - Xu-Fu Wei
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Zhong-Jun Wu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
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Brown O, Mou T, Lim S, Jones S, Kwasny M, Mueller M, Kenton K. 05 Do letters of recommendations for obstetrics and gynecology residency applicants differ by gender and race? a mixed-methods study. Am J Obstet Gynecol 2021. [DOI: 10.1016/j.ajog.2021.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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24
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Mou T, Brown O, Das D, Lewicky-Gaupp C, Kenton K, Bretschneider C. 20 Safety of abdominoplasty with concomitant hysterectomy: Do routes matter? Am J Obstet Gynecol 2021. [DOI: 10.1016/j.ajog.2021.04.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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25
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Das D, Brown O, Mou T, Bretschneider C, Kenton K, Geynisman-Tan J. 23 Repeat minimally invasive abdominal sacrocolpopexy for recurrent prolapse. Am J Obstet Gynecol 2021. [DOI: 10.1016/j.ajog.2021.04.166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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26
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Brown O, Mou T, Das D, Collins S, Kenton K, Bretschneider C. 19 Perioperative outcomes of laparoscopic sacrocolpopexy with or without hysterectomy: A secondary analysis of the national surgical quality improvement program (NSQIP) database. Am J Obstet Gynecol 2021. [DOI: 10.1016/j.ajog.2021.04.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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27
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Yan P, Huang Z, Mou T, Luo Y, Liu Y, Zhou B, Cao Z, Wu Z. Comprehensive analyses of competing endogenous RNA networks reveal potential biomarkers for predicting hepatocellular carcinoma recurrence. BMC Cancer 2021; 21:436. [PMID: 33879119 PMCID: PMC8058997 DOI: 10.1186/s12885-021-08173-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 04/09/2021] [Indexed: 02/21/2023] Open
Abstract
Background Hepatocellular carcinoma (HCC) is one of the most common and deadly malignant tumors, with a high rate of recurrence worldwide. This study aimed to investigate the mechanism underlying the progression of HCC and to identify recurrence-related biomarkers. Methods We first analyzed 132 HCC patients with paired tumor and adjacent normal tissue samples from the Gene Expression Omnibus (GEO) database to identify differentially expressed genes (DEGs). The expression profiles and clinical information of 372 HCC patients from The Cancer Genome Atlas (TCGA) database were next analyzed to further validate the DEGs, construct competing endogenous RNA (ceRNA) networks and discover the prognostic genes associated with recurrence. Finally, several recurrence-related genes were evaluated in two external cohorts, consisting of fifty-two and forty-nine HCC patients, respectively. Results With the comprehensive strategies of data mining, two potential interactive ceRNA networks were constructed based on the competitive relationships of the ceRNA hypothesis. The ‘upregulated’ ceRNA network consists of 6 upregulated lncRNAs, 3 downregulated miRNAs and 5 upregulated mRNAs, and the ‘downregulated’ network includes 4 downregulated lncRNAs, 12 upregulated miRNAs and 67 downregulated mRNAs. Survival analysis of the genes in the ceRNA networks demonstrated that 20 mRNAs were significantly associated with recurrence-free survival (RFS). Based on the prognostic mRNAs, a four-gene signature (ADH4, DNASE1L3, HGFAC and MELK) was established with the least absolute shrinkage and selection operator (LASSO) algorithm to predict the RFS of HCC patients, the performance of which was evaluated by receiver operating characteristic curves. The signature was also validated in two external cohort and displayed effective discrimination and prediction for the RFS of HCC patients. Conclusions In conclusion, the present study elucidated the underlying mechanisms of tumorigenesis and progression, provided two visualized ceRNA networks and successfully identified several potential biomarkers for HCC recurrence prediction and targeted therapies. Supplementary Information The online version contains supplementary material available at 10.1186/s12885-021-08173-0.
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Affiliation(s)
- Ping Yan
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Zuotian Huang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Tong Mou
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Yunhai Luo
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Yanyao Liu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Baoyong Zhou
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Zhenrui Cao
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Zhongjun Wu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China.
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Dai J, Chen Q, Huang W, Shi K, Zhang Y, Li T, Mou T, Huang Z, Wu Z. Liver kinase B1 attenuates liver ischemia/reperfusion injury via inhibiting the NLRP3 inflammasome. Acta Biochim Biophys Sin (Shanghai) 2021; 53:601-611. [PMID: 33783473 DOI: 10.1093/abbs/gmab030] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Indexed: 02/05/2023] Open
Abstract
Liver ischemia/reperfusion injury (IRI), a serious inflammatory response driven by innate immunity, occurs in liver surgeries such as liver resection and liver transplantation, leading to liver dysfunction, liver failure, and even rejection after transplantation. Liver kinase B1 (LKB1) plays a pivotal anti-inflammatory role in IRI. One of the most important factors involved in liver IRI is the aberrant activation of the nucleotide binding oligomerization domain like receptor (NLR) family, pyrin domain-containing 3 (NLRP3) inflammasome in Kupffer cells. However, the mechanisms underlying the effect of LKB1 on the NLRP3 inflammasome in liver IRI remain elusive. In this study, we found that the expression of LKB1 was decreased in liver IRI, while the NLRP3 inflammasome level was increased as shown, as revealed by RT-qPCR and western blot analysis. Furthermore, upregulation of LKB1 abrogated the expression of the NLRP3 inflammasome, which improved liver function and liver pathology in the liver IRI model in vivo. In vitro, overexpression of LKB1 inhibited the activation of NLRP3 inflammasome and nuclear factor-κB, while the inhibitory effect was reversed by silencing the expression of the forkhead box protein O1 in the RAW264.7 macrophage hypoxia/reoxygenation model. In conclusion, our results suggest that LKB1 exerts a protective effect against liver IRI by downregulating the NLRP3 inflammasome.
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Affiliation(s)
- Jiangwen Dai
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400042, China
| | - Qingsong Chen
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400042, China
| | - Weifeng Huang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400042, China
| | - Kun Shi
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400042, China
| | - Yuke Zhang
- Department of Urology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Tingting Li
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400042, China
| | - Tong Mou
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400042, China
| | - Zuotian Huang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400042, China
| | - Zhongjun Wu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400042, China
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Luo Y, Huang Z, Mou T, Pu J, Li T, Li Z, Yang H, Yan P, Wu Z, Wu Q. SET8 mitigates hepatic ischemia/reperfusion injury in mice by suppressing MARK4/NLRP3 inflammasome pathway. Life Sci 2021; 273:119286. [PMID: 33662429 DOI: 10.1016/j.lfs.2021.119286] [Citation(s) in RCA: 7] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 02/22/2021] [Accepted: 02/22/2021] [Indexed: 02/06/2023]
Abstract
AIMS Hepatic ischemia/reperfusion (I/R) injury is a critical factor affecting the prognosis of liver surgery. The aim of this study is to explore the effects of SET8 on hepatic I/R injury and the putative mechanisms. MAIN METHODS The expression of SET8 and MARK4 in I/R group and sham group were detected both in vivo and in vitro. In addition, mouse and RAW 264.7 cells were transfected with MARK4 siRNA and SET8 siRNA knockdown of MARK4 and SET8, respectively. The expression of SET8, MARK4 and NLRP3-associated proteins were detected after different treatments. The pathology of liver and the serologic detection were detected after different treatments. KEY FINDINGS Our present study identified SET domain-containing protein 8 (SET8) as an efficient protein, which can negatively regulate hepatic I/R-mediated inflammatory response and ameliorate hepatic I/R injury by suppressing microtubule affinity-regulating kinase 4 (MARK4)/ NLR family pyrin domain containing 3 (NLRP3) inflammasome pathway. The data showed that MARK4 deficiency inhibited hypoxia/reoxygenation (H/R)-induced NLRP3 inflammasome activation, while SET8 deficiency showed the opposite effect. We further demonstrated that SET8 restrained NLRP3 inflammasome activation by inhibiting MARK4. Moreover, we verified SET8 made protective effect on hepatic I/R injury. SIGNIFICANCE SET8 plays an essential role in hepatic ischemia/reperfusion injury in mice by suppressing MARK4/NLRP3 inflammasome pathway. Our results may offer a new strategy to mitigate hepatic I/R injury.
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Affiliation(s)
- Yunhai Luo
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zuotian Huang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Tong Mou
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Junliang Pu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Tingting Li
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zhongtang Li
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Hang Yang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Ping Yan
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zhongjun Wu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Qiao Wu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
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Gong J, Mou T, Wu H, Wu Z. Brg1 regulates murine liver regeneration by targeting miR-187-5p dependent on Hippo signalling pathway. J Cell Mol Med 2020; 24:11592-11602. [PMID: 32845093 PMCID: PMC7576256 DOI: 10.1111/jcmm.15776] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 08/02/2020] [Accepted: 08/05/2020] [Indexed: 12/20/2022] Open
Abstract
Brg1 and Hippo signalling pathway are abnormally expressed in many malignant tumours, especially in Hepatocellular carcinoma, but their role in liver regeneration (LR) is unknown. In our research, we investigated the role of Brg1 and Hippo signalling pathway in hepatocyte proliferation and LR. Following 2/3 partial hepatectomy (PH) in liver-specific Brg1 deleted mice (Brg1-/-) (KO) mice and sex-matched wild-type (WT), depletion of Brg1 in mouse embryos caused liver cell growth disorders and significantly decreased expression of miR-187-5p. We identified LATS1 as a target gene of miR-187-5p and the introduction of miR-187-5p decrease the expression of LATS1 and inactivated the Hippo signalling pathway, which facilitated the expression of cell cycle-related proteins, and rescues the inhibitory effect of Brg1 in LR. Taken together, our findings suggested that deletion of Brg1 inhibits hepatocyte proliferation and LR by targeting miR-187-5p dependent on Hippo signalling pathway.
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Affiliation(s)
- Junhua Gong
- Department of Hepatobiliary SurgeryThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
| | - Tong Mou
- Department of Hepatobiliary SurgeryThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
| | - Hao Wu
- Department of Hepatobiliary SurgeryThe Second Affiliated Hospital of Chongqing Medical UniversityChongqingChina
| | - Zhongjun Wu
- Department of Hepatobiliary SurgeryThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
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Mou T, Luo Y, Huang Z, Zheng D, Pu X, Shen A, Pu J, Li T, Dai J, Chen W, Wu Z. Inhibition of microRNA-128-3p alleviates liver ischaemia-reperfusion injury in mice through repressing the Rnd3/NF- κB axis. Innate Immun 2020; 26:528-536. [PMID: 32486927 PMCID: PMC7491242 DOI: 10.1177/1753425920928449] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 04/28/2020] [Accepted: 04/30/2020] [Indexed: 02/05/2023] Open
Abstract
Although liver ischaemia-reperfusion (I/R) injury remains the primary underlying reason for liver transplant failure or post-transplantation liver dysfunction, the underlying mechanism is still largely elusive. MicroRNAs (miRNA) are involved in multiple physiological and pathological processes, including inflammation. Here, we identified that the miR-128-3p/Rho family GTPase 3 (Rnd3)/NF-κB axis might play a critical role in liver I/R injury. Our results demonstrated that the level of miR-128-3p was negatively correlated with the Rnd3 level during liver I/R. Dual luciferase reporter assay results proved that Rnd3 mRNA was a direct target of miR-128-3p. Additionally, Western blotting and quantitative RT-PCR analyses revealed that knock-down of miR-128-3p could up-regulate Rnd3 mRNA and protein levels, thereby suppressing the NF-κB pathway through down-regulating NF-κB p65. Consequently, the serum levels of NF-κB-associated inflammatory factors and aspartate aminotransferase/alanine aminotransferase were decreased. Moreover, overexpression of Rnd3 could reverse the activation of NF-κB caused by miR-128-3p agomir during liver I/R injury. Overall, our study results suggest that repression of miR-128-3p can alleviate liver I/R injury through the miR-128-3p/Rnd3/NF-κB axis and may facilitate the development of novel protective approaches against liver I/R injury.
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Affiliation(s)
- Tong Mou
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, PR China
| | - Yunhai Luo
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, PR China
| | - Zuotian Huang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, PR China
| | | | - Xingyu Pu
- West China Hospital, Sichuan University, PR China
| | - Ai Shen
- Hepatobiliary Pancreatic Tumour Centre, Chongqing University Cancer Hospital, PR China
| | - Junliang Pu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, PR China
| | - Tingting Li
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, PR China
| | - Jiangwen Dai
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, PR China
| | - Wei Chen
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, PR China
| | - Zhongjun Wu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, PR China
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Liu M, Shi J, Mou T, Wang Y, Wu Z, Shen A. Systematic review of hepatic arterial infusion chemotherapy versus sorafenib in patients with hepatocellular carcinoma with portal vein tumor thrombosis. J Gastroenterol Hepatol 2020; 35:1277-1287. [PMID: 32052876 DOI: 10.1111/jgh.15010] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 02/07/2020] [Accepted: 02/09/2020] [Indexed: 01/27/2023]
Abstract
BACKGROUND AND AIM The prognosis of hepatocellular carcinoma (HCC) with portal vein tumor thrombosis (PVTT) is very poor. This study aimed to evaluate hepatic arterial infusion chemotherapy (HAIC) versus sorafenib (SORF) in the treatment of HCC with PVTT. METHODS Studies were identified online in Embase and MEDLINE before October 31, 2019. The end-points were overall survival (OS), progression-free survival (PFS), disease control rate (DCR), and safety. RESULTS Six studies with 417 cases were included in this systematic review. Meta-analyses demonstrated that HAIC is superior to SORF with respect to OS (hazard ratio [HR]: 0.50, 95% confidence interval: 0.38-0.66, P < 0.001) and PFS (HR: 0.47, 95% confidence interval: 0.31-0.73, P = 0.001) irrespective of research territoriality and study quality. Our systematic review also demonstrated that HAIC is superior to SORF with respect to DCR. Subgroup analysis demonstrated that the advantage is more obvious in the treatment of types III-IV PVTT with respect to OS (HR: 0.29, P < 0.001) and PFS(HR: 0.39, P < 0.001). HAIC caused more grades 3-4 neutropenia (HR: 10.71), anemia (HR: 7.55), leukopenia (HR: 10.38), and thrombocytopenia (HR: 13.09) than SORF. However, HAIC caused fewer cases of grades 3-4 aspartate aminotransferase rising (HR: 0.21), diarrhea (HR: 0.14), and hand-foot syndrome (HR: 0.14) than SORF. CONCLUSIONS This systematic review demonstrated that HAIC is superior to SORF in HCC with PVTT with respect to OS, PFS, and DCR, especially in HCC with types III-IV PVTT. HAIC caused more myelosuppression, whereas SORF is associated with diarrhea and hand-foot syndrome. Further randomized controlled trials are warranted.
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Affiliation(s)
- Miao Liu
- Gastrointestinal Tumor Center, Chongqing University Cancer Hospital, Chongqing, China
| | - Junyi Shi
- Department of Oncology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Tong Mou
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yang Wang
- Hepatobiliary Pancreatic Tumor Center, Chongqing University Cancer Hospital, Chongqing, China
| | - Zhongjun Wu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Ai Shen
- Hepatobiliary Pancreatic Tumor Center, Chongqing University Cancer Hospital, Chongqing, China
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de Freitas IC, Parreira LS, Barbosa ECM, Novaes BA, Mou T, Alves TV, Quiroz J, Wang YC, Slater TJ, Thomas A, Wang B, Haigh SJ, Camargo PHC. Design-controlled synthesis of IrO 2 sub-monolayers on Au nanoflowers: marrying plasmonic and electrocatalytic properties. Nanoscale 2020; 12:12281-12291. [PMID: 32319490 DOI: 10.1039/d0nr01875a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We develop herein plasmonic-catalytic Au-IrO2 nanostructures with a morphology optimized for efficient light harvesting and catalytic surface area; the nanoparticles have a nanoflower morphology, with closely spaced Au branches all partially covered by an ultrathin (1 nm) IrO2 shell. This nanoparticle architecture optimizes optical features due to the interactions of closely spaced plasmonic branches forming electromagnetic hot spots, and the ultra-thin IrO2 layer maximizes efficient use of this expensive catalyst. This concept was evaluated towards the enhancement of the electrocatalytic performances towards the oxygen evolution reaction (OER) as a model transformation. The OER can play a central role in meeting future energy demands but the performance of conventional electrocatalysts in this reaction is limited by the sluggish OER kinetics. We demonstrate an improvement of the OER performance for one of the most active OER catalysts, IrO2, by harvesting plasmonic effects from visible light illumination in multimetallic nanoparticles. We find that the OER activity for the Au-IrO2 nanoflowers can be improved under LSPR excitation, matching best properties reported in the literature. Our simulations and electrocatalytic data demonstrate that the enhancement in OER activities can be attributed to an electronic interaction between Au and IrO2 and to the activation of Ir-O bonds by LSPR excited hot holes, leading to a change in the reaction mechanism (rate-determinant step) under visible light illumination.
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Affiliation(s)
- Isabel C de Freitas
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Avenida Prof. Lineu Prestes, 748, 05508-000 São Paulo, SP, Brazil
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Young K, Mou T, Tavathia M, Geynisman-Tan J, Collins S, Mueller M, Lewicky-Gaupp C, Kenton K. 87: Truth or myth: Intraabdominal pressure increases in the lithotomy position. Am J Obstet Gynecol 2020. [DOI: 10.1016/j.ajog.2019.12.127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Chen W, Zheng D, Mou T, Pu J, Dai J, Huang Z, Luo Y, Zhang Y, Wu Z. Tle1 attenuates hepatic ischemia/reperfusion injury by suppressing NOD2/NF-κB signaling. Biosci Biotechnol Biochem 2020; 84:1176-1182. [PMID: 32114961 DOI: 10.1080/09168451.2020.1735928] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Liver damage induced by ischemia/reperfusion (I/R) remains a primary issue in multiple hepatic surgeries. Innate immune-mediated inflammatory responses during the reperfusion stage aggravate the injury. Nevertheless, the detailed mechanism of hepatic I/R has not been fully clarified yet. Our research focuses on the role of Transducin-like enhancer of split-1 (Tle1) in the liver I/R injury and the relation between Tle1 and Nucleotide-binding oligomerization domain 2 (NOD2). To answer these questions, we constructed mouse models of I/R and cell models of hypoxia/reoxygenation (H/R). We found decreased Tle1 accompanied by increased NOD2 during reperfusion. Mice pro-injected with Tle1-siRNA emerged aggravated liver dysfunction. Repression of Tle1 had a significant impact on NOD2 and downstream NF-κB signaling in vitro. However, alteration of NOD2 failed to affect the expression of Tle1. To conclude, our study demonstrates that Tle1 shelters the liver from I/R injury through suppression of NOD2-dependent NF-κB activation and subsequent inflammatory responses.
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Affiliation(s)
- Wei Chen
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Daofeng Zheng
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Tong Mou
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Junliang Pu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jiangwen Dai
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zuotian Huang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yunhai Luo
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yuke Zhang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zhongjun Wu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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Resasco J, Yang F, Mou T, Wang B, Christopher P, Resasco DE. Relationship between Atomic Scale Structure and Reactivity of Pt Catalysts: Hydrodeoxygenation of m-Cresol over Isolated Pt Cations and Clusters. ACS Catal 2019. [DOI: 10.1021/acscatal.9b04330] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Joaquin Resasco
- Department of Chemical Engineering, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Feifei Yang
- School of Chemical, Biological, and Materials Engineering and Center for Interfacial Reaction Engineering, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Tong Mou
- School of Chemical, Biological, and Materials Engineering and Center for Interfacial Reaction Engineering, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Bin Wang
- School of Chemical, Biological, and Materials Engineering and Center for Interfacial Reaction Engineering, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Phillip Christopher
- Department of Chemical Engineering, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Daniel E. Resasco
- School of Chemical, Biological, and Materials Engineering and Center for Interfacial Reaction Engineering, University of Oklahoma, Norman, Oklahoma 73019, United States
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Hughes NM, Mou T, O’Regan KN, Murphy P, O’Sullivan JN, Wolsztynski E, Huang J, Kennedy MP, Eary JF, O’Sullivan F. Tumor heterogeneity measurement using [18F] FDG PET/CT shows prognostic value in patients with non-small cell lung cancer. Eur J Hybrid Imaging 2018. [DOI: 10.1186/s41824-018-0043-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Quiroz J, Barbosa ECM, Araujo TP, Fiorio JL, Wang YC, Zou YC, Mou T, Alves TV, de Oliveira DC, Wang B, Haigh SJ, Rossi LM, Camargo PHC. Controlling Reaction Selectivity over Hybrid Plasmonic Nanocatalysts. Nano Lett 2018; 18:7289-7297. [PMID: 30352162 PMCID: PMC6348440 DOI: 10.1021/acs.nanolett.8b03499] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 10/15/2018] [Indexed: 05/21/2023]
Abstract
The localized surface plasmon resonance (LSPR) excitation in plasmonic nanoparticles has been used to accelerate several catalytic transformations under visible-light irradiation. In order to fully harness the potential of plasmonic catalysis, multimetallic nanoparticles containing a plasmonic and a catalytic component, where LSPR-excited energetic charge carriers and the intrinsic catalytic active sites work synergistically, have raised increased attention. Despite several exciting studies observing rate enhancements, controlling reaction selectivity remains very challenging. Here, by employing multimetallic nanoparticles combining Au, Ag, and Pt in an Au@Ag@Pt core-shell and an Au@AgPt nanorattle architectures, we demonstrate that reaction selectivity of a sequential reaction can be controlled under visible light illumination. The control of the reaction selectivity in plasmonic catalysis was demonstrated for the hydrogenation of phenylacetylene as a model transformation. We have found that the localized interaction between the triple bond in phenylacetylene and the Pt nanoparticle surface enables selective hydrogenation of the triple bond (relative to the double bond in styrene) under visible light illumination. Atomistic calculations show that the enhanced selectivity toward the partial hydrogenation product is driven by distinct adsorption configurations and charge delocalization of the reactant and the reaction intermediate at the catalyst surface. We believe these results will contribute to the use of plasmonic catalysis to drive and control a wealth of selective molecular transformations under ecofriendly conditions and visible light illumination.
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Affiliation(s)
- Jhon Quiroz
- Departamento
de Química Fundamental, Instituto de Química, Universidade de São Paulo, Avenido Prof. Lineu Prestes, 748, 05508-000 São Paulo, SP, Brazil
| | - Eduardo C. M. Barbosa
- Departamento
de Química Fundamental, Instituto de Química, Universidade de São Paulo, Avenido Prof. Lineu Prestes, 748, 05508-000 São Paulo, SP, Brazil
| | - Thaylan P. Araujo
- Departamento
de Química Fundamental, Instituto de Química, Universidade de São Paulo, Avenido Prof. Lineu Prestes, 748, 05508-000 São Paulo, SP, Brazil
| | - Jhonatan L. Fiorio
- Departamento
de Química Fundamental, Instituto de Química, Universidade de São Paulo, Avenido Prof. Lineu Prestes, 748, 05508-000 São Paulo, SP, Brazil
| | - Yi-Chi Wang
- School
of Materials, University of Manchester, Manchester M13 9PL, United Kingdom
| | - Yi-Chao Zou
- School
of Materials, University of Manchester, Manchester M13 9PL, United Kingdom
| | - Tong Mou
- Center
for Interfacial Reaction Engineering and School of Chemical, Biological,
and Materials Engineering, Gallogly College of Engineering, The University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Tiago V. Alves
- Departamento
de Físico-Química, Instituto de Química, Universidade Federal da Bahia Rua Barão de Jeremoabo, 147, 40170-115, Salvador, BA, Brazil
| | - Daniela C. de Oliveira
- Centro
Nacional de Pesquisa em Energia e Materiais, Laboratório Nacional
de Luz Síncrotron, 13083-970, Campinas, SP, Brazil
| | - Bin Wang
- Center
for Interfacial Reaction Engineering and School of Chemical, Biological,
and Materials Engineering, Gallogly College of Engineering, The University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Sarah J. Haigh
- School
of Materials, University of Manchester, Manchester M13 9PL, United Kingdom
| | - Liane M. Rossi
- Departamento
de Química Fundamental, Instituto de Química, Universidade de São Paulo, Avenido Prof. Lineu Prestes, 748, 05508-000 São Paulo, SP, Brazil
| | - Pedro H. C. Camargo
- Departamento
de Química Fundamental, Instituto de Química, Universidade de São Paulo, Avenido Prof. Lineu Prestes, 748, 05508-000 São Paulo, SP, Brazil
- E-mail:
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Affiliation(s)
- Brian M. Murphy
- Center for Catalytic Science and Technology, Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, Delaware 19716, United States
| | - Tong Mou
- Department of Chemical, Biological, and Materials Engineering, University of Oklahoma, 100 East Boyd Street, Norman, Oklahoma 73019, United States
| | - Bin Wang
- Department of Chemical, Biological, and Materials Engineering, University of Oklahoma, 100 East Boyd Street, Norman, Oklahoma 73019, United States
| | - Bingjun Xu
- Center for Catalytic Science and Technology, Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, Delaware 19716, United States
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Mou T, Wang B. Rational Surface Modification of Two-Dimensional Layered Black Phosphorus: Insights from First-Principles Calculations. ACS Omega 2018; 3:2445-2451. [PMID: 31458540 PMCID: PMC6641246 DOI: 10.1021/acsomega.7b01992] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 02/14/2018] [Indexed: 06/10/2023]
Abstract
Surface modification of atomically thin semiconductors enables their electronic, optical, chemical, and mechanical properties to be tailored and allows these nanosheets to be processed in solutions. Here, we report first-principles density functional theory calculations, through which we show chemical functionalization of black phosphorus using phenyl, phenolate, and nitrene species, which were widely investigated for carbon-based materials. We find that covalent functionalization using nitrene-derived species introduces a strong P-N dative bond at the interface without perturbing its intrinsic electronic structure. The Lewis basic and nucleophilic P atom attacks, through a free pair of electrons, the Lewis acidic nitrene species. These results are further compared to other nitrene-derived functional groups on black phosphorus, including N-methylbenzene, N-aminobenzene, and N-nitrobenzene. We find that by tuning the charge redistribution at the interface, the work function of black phosphorus can be tuned by more than 2 eV. These results suggest valuable tunability of the electronic properties of two-dimensional layered black phosphorus by covalent functionalization for future device applications.
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Barbosa ECM, Fiorio JL, Mou T, Wang B, Rossi LM, Camargo PHC. Reaction Pathway Dependence in Plasmonic Catalysis: Hydrogenation as a Model Molecular Transformation. Chemistry 2018; 24:12330-12339. [DOI: 10.1002/chem.201705749] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Indexed: 12/22/2022]
Affiliation(s)
- Eduardo C. M. Barbosa
- Departamento de Química Fundamental, Instituto de Química; Universidade de São Paulo; Av. Prof. Lineu Prestes, 748 05508-000 São Paulo, SP Brazil
| | - Jhonatan L. Fiorio
- Departamento de Química Fundamental, Instituto de Química; Universidade de São Paulo; Av. Prof. Lineu Prestes, 748 05508-000 São Paulo, SP Brazil
| | - Tong Mou
- Center for Interfacial Reaction Engineering and School of Chemical, Biological, and Materials Engineering, Gallogly College of Engineering; The University of Oklahoma; Norman OK USA
| | - Bin Wang
- Center for Interfacial Reaction Engineering and School of Chemical, Biological, and Materials Engineering, Gallogly College of Engineering; The University of Oklahoma; Norman OK USA
| | - Liane M. Rossi
- Departamento de Química Fundamental, Instituto de Química; Universidade de São Paulo; Av. Prof. Lineu Prestes, 748 05508-000 São Paulo, SP Brazil
| | - Pedro H. C. Camargo
- Departamento de Química Fundamental, Instituto de Química; Universidade de São Paulo; Av. Prof. Lineu Prestes, 748 05508-000 São Paulo, SP Brazil
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Li TT, Zhu D, Mou T, Guo Z, Pu JL, Chen QS, Wei XF, Wu ZJ. IL-37 induces autophagy in hepatocellular carcinoma cells by inhibiting the PI3K/AKT/mTOR pathway. Mol Immunol 2017; 87:132-140. [DOI: 10.1016/j.molimm.2017.04.010] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 04/09/2017] [Accepted: 04/13/2017] [Indexed: 12/18/2022]
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Abstract
Van der Waals heterostructures consisting of two-dimensional materials offer a platform to obtain materials by design and are very attractive owing to unique electronic states. Research on 2D van der Waals heterostructures (vdWH) has so far been focused on fabricating individually stacked atomically thin unary or binary crystals. Such systems include graphene, hexagonal boron nitride, and members of the transition metal dichalcogenide family. Here we present our experimental study of the optoelectronic properties of a naturally occurring vdWH, known as franckeite, which is a complex layered crystal composed of lead, tin, antimony, iron, and sulfur. We present here that thin film franckeite (60 nm < d < 100 nm) behaves as a narrow band gap semiconductor demonstrating a wide-band photoresponse. We have observed the band-edge transition at ∼1500 nm (∼830 meV) and high external quantum efficiency (EQE ≈ 3%) at room temperature. Laser-power-resolved and temperature-resolved photocurrent measurements reveal that the photocarrier generation and recombination are dominated by continuously distributed trap states within the band gap. To understand wavelength-resolved photocurrent, we also calculated the optical absorption properties via density functional theory. Finally, we have shown that the device has a fast photoresponse with a rise time as fast as ∼1 ms. Our study provides a fundamental understanding of the optoelectronic behavior in a complex naturally occurring vdWH, and may pave an avenue toward developing nanoscale optoelectronic devices with tailored properties.
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Affiliation(s)
- Kyle Ray
- Department of Physics and Astronomy, San Francisco State University , San Francisco, California 94132, United States
| | - Alexander E Yore
- Department of Physics and Astronomy, San Francisco State University , San Francisco, California 94132, United States
| | - Tong Mou
- School of Chemical, Biological and Materials Engineering, University of Oklahoma , Norman, Oklahoma 73019, United States
| | - Sauraj Jha
- Department of Physics and Astronomy, San Francisco State University , San Francisco, California 94132, United States
| | - Kirby K H Smithe
- Department of Electrical Engineering, Stanford University , Stanford, California 94305, United States
| | - Bin Wang
- School of Chemical, Biological and Materials Engineering, University of Oklahoma , Norman, Oklahoma 73019, United States
| | - Eric Pop
- Department of Electrical Engineering, Stanford University , Stanford, California 94305, United States
| | - A K M Newaz
- Department of Physics and Astronomy, San Francisco State University , San Francisco, California 94132, United States
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Li T, Zhu D, Mou T, Guo Z, Pu J, Wu Z. [Interleukin-37 induces apoptosis and autophagy of SMMC-7721 cells by inhibiting phosphorylation of mTOR]. Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi 2017; 33:440-445. [PMID: 28395710] [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: 06/07/2023]
Abstract
Objective To investigate the underlying mechanism by which interleukin-37 (IL-37) induces the apoptosis and autophagy in SMMC-7721 cells. Methods SMMC-7721 cells were incubated in vitro and divided into two groups, IL-37 treated group and control group. The cells were treated with (50, 100, 200) ng/mL of recombinant human interleukin-37 (rhIL-37). CCK-8 assay was used to detect the cell proliferation of SMMC-7721 cells. Cell apoptosis was measured by flow cytometry. Western blot analysis was performed to examine the expressions of apoptosis-related proteins, Bax, Bcl-2, and autophagy related proteins, microtubule-associated proteins 1 light chain 3 (LC3), beclin 1 and mammalian target of rapamycin (mTOR). Transmission electron microscopy (TEM) was used to observe the ultrastructures of autophagosomes. Results The rhIL-37 inhibited the proliferation of hepatocellular carcinoma SMMC-7721 cells. It induced the apoptosis and autophagy in SMMC-7721 cells. In the IL-37 treated group, the levels of Bax, LC3 and beclin 1 increased but Bcl-2 decreased. The phosphorylation of mTOR was inhibited in the IL-37 treated group. Autophagosome was obvious in the IL-37 treated group. Conclusion IL-37 induces the apoptosis and autophagy in SMMC-7721 cells, which may be related to the phosphorylation of mTOR.
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Affiliation(s)
- Tingting Li
- Department of Hepatobiliary Surgery, First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - Di Zhu
- Department of Hepatobiliary Surgery, First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - Tong Mou
- Department of Hepatobiliary Surgery, First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - Zhen Guo
- Department of Hepatobiliary Surgery, First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - Junliang Pu
- Department of Hepatobiliary Surgery, First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - Zhongjun Wu
- Department of Hepatobiliary Surgery, First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China. *Corresponding author, E-mail:
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Mou T, Zhu D, Wei X, Li T, Zheng D, Pu J, Guo Z, Wu Z. Identification and interaction analysis of key genes and microRNAs in hepatocellular carcinoma by bioinformatics analysis. World J Surg Oncol 2017; 15:63. [PMID: 28302149 PMCID: PMC5356276 DOI: 10.1186/s12957-017-1127-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 03/06/2017] [Indexed: 12/20/2022] Open
Abstract
Background Hepatocellular carcinoma (HCC) is the most common liver malignancy worldwide. However, present studies of its multiple gene interaction and cellular pathways still could not explain the initiation and development of HCC perfectly. To find the key genes and miRNAs as well as their potential molecular mechanisms in HCC, microarray data GSE22058, GSE25097, and GSE57958 were analyzed. Methods The microarray datasets GSE22058, GSE25097, and GSE57958, including mRNA and miRNA profiles, were downloaded from the GEO database and were analyzed using GEO2R. Functional and pathway enrichment analyses were performed using the DAVID database, and the protein–protein interaction (PPI) network was constructed using the Cytoscape software. Finally, miRDB was applied to predict the targets of the differentially expressed miRNAs (DEMs). Results A total of 115 differentially expressed genes (DEGs) were found in HCC, including 52 up-regulated genes and 63 down-regulated genes. The gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses from DAVID showed that up-regulated genes were significantly enriched in chromosome segregation and cell division, while the down-regulated genes were mainly involved in complement activation, protein activation cascades, carboxylic acid metabolic processes, oxoacid metabolic processes, and the immune response. From the PPI network, the 18 nodes with the highest degree were screened as hub genes. Among them, ESR1 was found to have close interactions with FOXO1, CXCL12, and GNAO1. In addition, a total of 64 DEMs were identified, which included 58 up-regulated miRNAs and 6 down-regulated miRNAs. ESR1 was potentially targeted by five miRNAs, including hsa-mir-18a and hsa-mir-221. Conclusions The roles of DEMs like hsa-mir-221 in HCC through interactions with DEGs such as ESR1 and CXCL12 may provide new clues for the diagnosis and treatment of HCC patients. Electronic supplementary material The online version of this article (doi:10.1186/s12957-017-1127-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Tong Mou
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Di Zhu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Xufu Wei
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Tingting Li
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Daofeng Zheng
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Junliang Pu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Zhen Guo
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Zhongjun Wu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China.
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Chen J, Song D, Luo Q, Mou T, Yang R, Chen H, He S, Yan X. Determination of Floridoside and Isofloridoside in Red Algae by High-Performance Liquid Chromatography–Tandem Mass Spectrometry. ANAL LETT 2014. [DOI: 10.1080/00032719.2014.905950] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Mou T, Kraas JR, Fung ET, Swope SL. Identification of a dynein molecular motor component in Torpedo electroplax; binding and phosphorylation of Tctex-1 by Fyn. FEBS Lett 1998; 435:275-81. [PMID: 9762924 DOI: 10.1016/s0014-5793(98)01069-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [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: 11/16/2022]
Abstract
The microtubule protein Tctex-1 was cloned from Torpedo electroplax, a biochemical model of the neuromuscular junction, using the unique domain of Fyn in the yeast two hybrid system. Binding of Tctex-1 and Fyn also occurred in vitro. Torpedo Tctex-1 was contained within the molecular motor protein dynein. A Src class kinase was also complexed with dynein. Tctex-1 was enriched in electric organ vs. skeletal muscle, was present in the postsynaptic membrane, and coprecipitated with the acetylcholine receptor. The sequence of Tctex-1 contained a tyrosine phosphorylation motif and Tctex-1 could be phosphorylated by Fyn in vitro and in vivo. These data demonstrated that Tctex-1-containing dynein is a cytoskeletal element at the acetylcholine receptor-enriched postsynaptic membrane and suggested that Tctex-1 may be a substrate for Fyn.
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Affiliation(s)
- T Mou
- Department of Neurology, Georgetown Institute for Cognitive and Computational Sciences, Georgetown University Medical Center, Washington, DC 20007, USA
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Zhu Y, Haddadian E, Mou T, Gross M, Liu J. Role of nucleation in the structure evolution of a magnetorheological fluid. Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics 1996; 53:1753-1759. [PMID: 9964436 DOI: 10.1103/physreve.53.1753] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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