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Mi Y, Wang Y, Liu Y, Dang W, Xu L, Tan S, Liu L, Chen G, Liu Y, Li N, Hou Y. Kellerin alleviates cerebral ischemic injury by inhibiting ferroptosis via targeting Akt-mediated transcriptional activation of Nrf2. Phytomedicine 2024; 128:155406. [PMID: 38520834 DOI: 10.1016/j.phymed.2024.155406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 01/15/2024] [Accepted: 02/01/2024] [Indexed: 03/25/2024]
Abstract
BACKGROUND Ischemic stroke (IS) is characterized as a detrimental cerebrovascular disease with high mortality and disability. Ferroptosis is a novel mechanism involved in neuronal death. There is a close connection between IS and ferroptosis, and inhibiting ferroptosis may provide an effective strategy for treating IS. Our previous investigations have discovered that kellerin, the active compound of Ferula sinkiangensis K. M. Shen, possesses the capability to shield against cerebral ischemia injury. PURPOSE Our objective is to clarify the relationship between the neuroprotective properties of kellerin against IS and its ability to modulate ferroptosis, and investigate the underlying regulatory pathway. STUDY DESIGN We investigated the impact and mechanism of kellerin in C57BL/6 mice underwent middle cerebral artery occlusion/reperfusion (MCAO/R) as well as SH-SY5Y cells exposed to oxygen-glucose deprivation/ re-oxygenation (OGD/R). METHODS The roles of kellerin on neurological severity, cerebral infarction and edema were investigated in vivo. The regulatory impacts of kellerin on ferroptosis, mitochondrial damage and Akt/Nrf2 pathway were explored. Molecular docking combined with drug affinity responsive target stability assay (DARTS) and cellular thermal shift assay (CETSA) were performed to analyze the potential target proteins for kellerin. RESULTS Kellerin protected against IS and inhibited ferroptosis in vivo. Meanwhile, kellerin improved the neuronal damage caused by OGD/R and suppressed ferroptosis by inhibiting the production of mitochondrial ROS in vitro. Further we found that kellerin directly interacted with Akt and enhanced its phosphorylation, leading to the increase of Nrf2 nuclear translocation and its downstream antioxidant genes expression. Moreover, kellerin's inhibitory effect on ferroptosis and mitochondrial ROS release was eliminated by inhibiting Akt/Nrf2 pathway. CONCLUSIONS Our study firstly demonstrates that the neuroprotective properties of kellerin against IS are related to suppressing ferroptosis through inhibiting the production of mitochondrial ROS, in which its modulation on Akt-mediated transcriptional activation of Nrf2 plays an important role. This finding shed light on the potential mechanism that kellerin exerts therapeutic effects in IS.
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Affiliation(s)
- Yan Mi
- Key Laboratory of Bioresource Research and Development of Liaoning Province, College of Life and Health Sciences, National Frontiers Science Center for Industrial Intelligence and Systems Optimization, Key Laboratory of Data Analytics and Optimization for Smart Industry, Ministry of Education, Northeastern University, Shenyang, PR China
| | - Yongping Wang
- Key Laboratory of Bioresource Research and Development of Liaoning Province, College of Life and Health Sciences, National Frontiers Science Center for Industrial Intelligence and Systems Optimization, Key Laboratory of Data Analytics and Optimization for Smart Industry, Ministry of Education, Northeastern University, Shenyang, PR China
| | - Yeshu Liu
- Key Laboratory of Bioresource Research and Development of Liaoning Province, College of Life and Health Sciences, National Frontiers Science Center for Industrial Intelligence and Systems Optimization, Key Laboratory of Data Analytics and Optimization for Smart Industry, Ministry of Education, Northeastern University, Shenyang, PR China
| | - Wen Dang
- School of Traditional Chinese Materia Medica, Key Laboratory of Innovative Traditional Chinese Medicine for Major Chronic Diseases of Liaoning Province, Key Laboratory for TCM Material Basis Study and Innovative Drug Development of Shenyang City, Shenyang Pharmaceutical University, Shenyang, PR China
| | - Libin Xu
- Key Laboratory of Bioresource Research and Development of Liaoning Province, College of Life and Health Sciences, National Frontiers Science Center for Industrial Intelligence and Systems Optimization, Key Laboratory of Data Analytics and Optimization for Smart Industry, Ministry of Education, Northeastern University, Shenyang, PR China
| | - Shaowen Tan
- Key Laboratory of Bioresource Research and Development of Liaoning Province, College of Life and Health Sciences, National Frontiers Science Center for Industrial Intelligence and Systems Optimization, Key Laboratory of Data Analytics and Optimization for Smart Industry, Ministry of Education, Northeastern University, Shenyang, PR China
| | - Linge Liu
- Key Laboratory of Bioresource Research and Development of Liaoning Province, College of Life and Health Sciences, National Frontiers Science Center for Industrial Intelligence and Systems Optimization, Key Laboratory of Data Analytics and Optimization for Smart Industry, Ministry of Education, Northeastern University, Shenyang, PR China
| | - Gang Chen
- School of Traditional Chinese Materia Medica, Key Laboratory of Innovative Traditional Chinese Medicine for Major Chronic Diseases of Liaoning Province, Key Laboratory for TCM Material Basis Study and Innovative Drug Development of Shenyang City, Shenyang Pharmaceutical University, Shenyang, PR China
| | - Yueyang Liu
- Shenyang Key Laboratory of Vascular Biology, Science and Research Center, Department of Pharmacology, Shenyang Medical College, Shenyang, PR China.
| | - Ning Li
- School of Traditional Chinese Materia Medica, Key Laboratory of Innovative Traditional Chinese Medicine for Major Chronic Diseases of Liaoning Province, Key Laboratory for TCM Material Basis Study and Innovative Drug Development of Shenyang City, Shenyang Pharmaceutical University, Shenyang, PR China.
| | - Yue Hou
- Key Laboratory of Bioresource Research and Development of Liaoning Province, College of Life and Health Sciences, National Frontiers Science Center for Industrial Intelligence and Systems Optimization, Key Laboratory of Data Analytics and Optimization for Smart Industry, Ministry of Education, Northeastern University, Shenyang, PR China.
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Dang W, Feng J, Li D, Fan M, Zhao L. A dataset of storm surge reconstructions in the Western North Pacific using CNN. Sci Data 2024; 11:405. [PMID: 38649677 PMCID: PMC11035666 DOI: 10.1038/s41597-024-03249-5] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 04/10/2024] [Indexed: 04/25/2024] Open
Abstract
The relatively short duration of available tide gauge records poses challenges for conducting comprehensive statistical analyses of storm surges in the Western North Pacific. To address this issue, we employ a convolutional neural network model to reconstruct the maximum daily storm surge at 160 tide gauges from 1900 to 2010 in the Western North Pacific. The reconstructed dataset serves multiple purposes. Firstly, it facilitates the identification of regions where notable changes in the storm surges have occurred in the past. Additionally, the dataset enables long-term analyses of the storm surge climate, offering insights into historical patterns and variations. Furthermore, it provides a solid foundation for conducting robust extreme value analyses. To ensure accessibility, the data are publicly available through a repository, allowing for easy access and utilization by the broader scientific community and the general public. Overall, our research contributes to the field of oceanography by providing a dataset that aids in understanding the historical storm surge dynamics in the Western North Pacific region.
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Affiliation(s)
- Wen Dang
- Key Laboratory of Marine Resource Chemistry and Food Technology (TUST), Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Jianlong Feng
- Key Laboratory of Marine Resource Chemistry and Food Technology (TUST), Tianjin University of Science and Technology, Tianjin, 300457, China.
| | - Delei Li
- Key Laboratory of Ocean Observation and Forecasting, Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.
| | - Mengzhen Fan
- Key Laboratory of Marine Resource Chemistry and Food Technology (TUST), Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Liang Zhao
- Key Laboratory of Marine Resource Chemistry and Food Technology (TUST), Tianjin University of Science and Technology, Tianjin, 300457, China
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Bai S, Dang W, Hong W, Liao W, Smith RD. The prevalence of hepatitis B in Chinese general population from 2018 to 2022: a systematic review and meta-analysis. BMC Infect Dis 2024; 24:211. [PMID: 38365596 PMCID: PMC10870619 DOI: 10.1186/s12879-024-09103-8] [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] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 02/05/2024] [Indexed: 02/18/2024] Open
Abstract
BACKGROUND Within China, Hepatitis B virus (HBV) infection remains widely prevalent and one of the major public health problems. There have been only two previous estimates of its prevalence at the population level in China, with the latest survey conducted in 2006. A meta-analysis estimated the prevalence of HBV within China between 2013 and 2017 as 7%. This review provides an updated estimate of HBV prevalence in China from 2018 to 2022. METHODS Systematic searches of literature from January 1, 2018 to December 25, 2022 were conducted in four international databases (Medline, Web of Science, Embase, Cochrane Database of Systematic Reviews) and three Chinese databases (CNKI, CBM, and WanFang data). Random-effects meta-analyses were conducted to calculate the pooled HBV prevalence with 95% confidence intervals in the overall population and subgroups. Publication bias, heterogeneity between studies, and study quality were assessed. RESULTS Twenty-five articles were included in the meta-analysis. The pooled prevalence of HBV infection in the Chinese general population from 2018 to 2022 was 3% (95%CI: 2-4%). The prevalence of HBV infection was similar between males and females (both 3%), while rural areas had a higher prevalence than urban areas (3% vs 2%). The highest prevalence of HBV was reported in the eastern provinces (4, 95%CI: 2-6%). The HBV prevalence of people aged ≥18 years old (6, 95%CI: 4-8%) was higher than people aged < 18 years old (0, 95%CI: 0-1%). CONCLUSION Compared to the previous meta-analysis prevalence in 2013-2017, the updated meta-analysis estimated prevalence of HBV infection (3%) from 2018 to 2020 showed a decreasing trend, suggesting China had moved into a lower intermediate epidemic area (2-5%). However, the prevalence of HBV in rural areas and eastern regions was still higher than the national average. People aged ≥18 years old showed a higher HBV prevalence. HBV prevention should be prioritized in the highest-prevalence areas and high-risk populations. Due to heterogeneity in data collection methods among studies, there remains a need for systematic surveillance of nationwide HBV prevalence.
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Affiliation(s)
- Shuwen Bai
- Department of Public Health and Medicinal Administration, Faculty of Health Sciences, University of Macau, Macao SAR, China
| | - Wen Dang
- Department of Public Health and Medicinal Administration, Faculty of Health Sciences, University of Macau, Macao SAR, China
| | - Wenying Hong
- Department of Public Health and Medicinal Administration, Faculty of Health Sciences, University of Macau, Macao SAR, China
| | - Wenyu Liao
- Department of Public Health and Medicinal Administration, Faculty of Health Sciences, University of Macau, Macao SAR, China
| | - Robert David Smith
- Department of Public Health and Medicinal Administration, Faculty of Health Sciences, University of Macau, Macao SAR, China.
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Zhang S, Yuan M, He D, Dang W, Zhang W. Long-term follow-up of brain regional changes and the association with cognitive impairment in quarantined COVID-19 survivors. Eur Arch Psychiatry Clin Neurosci 2024:10.1007/s00406-023-01741-4. [PMID: 38319396 DOI: 10.1007/s00406-023-01741-4] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 12/11/2023] [Indexed: 02/07/2024]
Abstract
OBJECTIVE This study aimed to evaluate the neuropsychiatric symptoms of quarantined COVID-19 survivors 15 months after discharge and explore its potential association with structural and functional brain changes and inflammation. METHODS A total of 51 quarantined COVID-19 survivors and 74 healthy controls were included in this study. Cognitive function was assessed using the THINC-integrated tool. Structural brain changes were examined through both surface- and volume-based analyses, and functional changes were assessed using resting-state amplitude low-frequency fluctuation (ALFF). Serum inflammatory markers were measured by a multiplexed flow cytometric assay. RESULTS COVID-19 survivors exhibited subjective cognitive decline compared to healthy controls, despite no significant differences in objective cognitive tasks. Structural analysis revealed significantly increased gray matter volume and cortical surface area in the left transverse temporal gyrus (Heschl's gyrus) in quarantined COVID-19 survivors. This enlargement was negatively correlated with cognitive impairment. The ALFF analysis showed decreased neural activity in multiple brain regions. Elevated levels of serum inflammatory markers were also found in COVID-19 survivors, including MIP-1a, MIP-1b, TNF-a, and IL-8, which correlated with functional abnormalities. CONCLUSIONS Our findings indicate a subjective cognitive decline in quarantined COVID-19 survivors 15 months after discharge, which is associated with brain structural alterations in the left Heschl's gyrus. The observed elevation of inflammatory markers suggests a potential mechanism involving inflammation-induced neurogenesis. These results contribute to our understanding of the possible mechanisms underlying long-term neuropsychiatric consequences of COVID-19 and highlight the need for further research to develop targeted interventions.
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Affiliation(s)
- Simai Zhang
- West China Biomedical Big Data Center, West China Hospital, Sichuan University, No. 37 Guoxue Street, Chengdu, 610041, China
- Med-X Center for Informatics, Sichuan University, Chengdu, 610041, China
| | - Minlan Yuan
- Mental Health Center, West China Hospital, Sichuan University, Chengdu, 610041, China.
| | - Danmei He
- Mental Health Center, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Wen Dang
- Mental Health Center, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Wei Zhang
- West China Biomedical Big Data Center, West China Hospital, Sichuan University, No. 37 Guoxue Street, Chengdu, 610041, China.
- Med-X Center for Informatics, Sichuan University, Chengdu, 610041, China.
- Mental Health Center, West China Hospital, Sichuan University, Chengdu, 610041, China.
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Zhong Y, Tian X, Jiang X, Dang W, Cheng M, Li N, Liu Y. Novel Ziyuglycoside II derivatives inhibit MCF-7 cell proliferation via inducing apoptosis and autophagy. Bioorg Chem 2023; 139:106752. [PMID: 37499529 DOI: 10.1016/j.bioorg.2023.106752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 07/18/2023] [Accepted: 07/22/2023] [Indexed: 07/29/2023]
Abstract
A series of novel ziyuglycoside II derivatives were synthesized based on the classical 1,2,3-triazole moiety. Among the tested derivatives (Z-1 - Z-15), the compound Z-15 demonstrated the most potent antiproliferative effect on K562, MCF-7 and MV411 cell lines. Moreover, Z-15 did not show obvious cytotoxicity on MCF-10A cell, a human normal mammary epithelial cell. The cell colony formation assay showed that, compared to ziyuglycoside II and 5-fluorouracil, Z-15 could inhibit cell proliferation more robustly. Wound healing assays indicated that Z-15 could significantly inhibit MCF-7 cell migration. Further mechanistic research revealed that Z-15 induced mitochondrial-mediated apoptosis and autophagy in MCF-7 cell line in a dose-dependent manner.
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Affiliation(s)
- Ye Zhong
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Xing Tian
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Xinyue Jiang
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Wen Dang
- School of Traditional Chinese Materia Medica, Key Laboratory of Innovative Traditional Chinese Medicine for Major Chronic Diseases of Liaoning Province, Key Laboratory for TCM Material Basis Study and Innovative Drug Development of Shenyang City, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Maosheng Cheng
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Ning Li
- School of Traditional Chinese Materia Medica, Key Laboratory of Innovative Traditional Chinese Medicine for Major Chronic Diseases of Liaoning Province, Key Laboratory for TCM Material Basis Study and Innovative Drug Development of Shenyang City, Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Yang Liu
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, China.
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Wang X, Tang J, Dang W, Xie Z, Zhang F, Hao X, Sun S, Liu X, Luo Y, Li M, Gu Y, Wang Y, Chen Q, Shen X, Xu L. Isolation and Characterization of Three Pseudomonas aeruginosa Viruses with Therapeutic Potential. Microbiol Spectr 2023; 11:e0463622. [PMID: 37125933 PMCID: PMC10269630 DOI: 10.1128/spectrum.04636-22] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 03/24/2023] [Indexed: 05/02/2023] Open
Abstract
As one of the most common pathogens of opportunistic and hospital-acquired infections, Pseudomonas aeruginosa is associated with resistance to diverse antibiotics, which represents a significant challenge to current treatment modalities. Phage therapy is considered a promising alternative to conventional antimicrobials. The characterization and isolation of new bacteriophages and the concurrent evaluation of their therapeutic potential are fundamental for phage therapy. In this study, we employed an enrichment method and a double-layer agar overlay to isolate bacteriophages that infect P. aeruginosa strains PAO1 and PA14. Three phages (named PA_LZ01, PA_LZ02, and PA_LZ03) were isolated and showed icosahedral heads and contractile tails. Following full-genome sequencing, we found that phage PA_LZ01 contained a genome of 65,367 bp in size and harbored 90 predicted open reading frames (ORFs), phage PA_LZ02 contained a genome of 57,243 bp in size and harbored 75 predicted ORFs, and phage PA_LZ03 contained a genome of 57,367 bp in size and carried 77 predicted ORFs. Further comparative analysis showed that phage PA_LZ01 belonged to the genus Pbunavirus genus, phage PA_LZ02 belonged to the genus Pamexvirus, and phage PA_LZ03 belonged to the family Mesyanzhinovviridae. Next, we demonstrated that these phages were rather stable at different temperatures and pHs. One-step growth curves showed that the burst size of PA_LZ01 was 15 PFU/infected cell, and that of PA_LZ02 was 50 PFU/infected cell, while the titer of PA_LZ03 was not elevated. Similarly, the biofilm clearance capacities of PA_LZ01 and PA_LZ02 were also higher than that of PA_LZ03. Therapeutically, PA_LZ01 and PA_LZ02 treatment led to decreased bacterial loads and inflammatory responses in a mouse model. In conclusion, we isolated three phages that can infect P. aeruginosa, which were stable in different environments and could reduce bacterial biofilms, suggesting their potential as promising candidates to treat P. aeruginosa infections. IMPORTANCE Phage therapy is a promising therapeutic option for treating bacterial infections that do not respond to common antimicrobial treatments. Biofilm-mediated infections are particularly difficult to treat with traditional antibiotics, and the emergence of antibiotic-resistant strains has further complicated the situation. Pseudomonas aeruginosa is a bacterial pathogen that causes chronic infections and is highly resistant to many antibiotics. The library of phages that target P. aeruginosa is expanding, and the isolation of new bacteriophages is constantly required. In this study, three bacteriophages that could infect P. aeruginosa were isolated, and their biological characteristics were investigated. In particular, the isolated phages are capable of reducing biofilms formed by P. aeruginosa. Further analysis indicates that treatment with PA_LZ01 and PA_LZ02 phages reduces bacterial loads and inflammatory responses in vivo. This study isolated and characterized bacteriophages that could infect P. aeruginosa, which offers a resource for phage therapy.
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Affiliation(s)
- Xiao Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Jingjing Tang
- State Key Laboratory of Crop Stress Biology for Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Wen Dang
- State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Zhen Xie
- State Key Laboratory of Crop Stress Biology for Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Fuhua Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Xinwei Hao
- State Key Laboratory of Crop Stress Biology for Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Sihuai Sun
- State Key Laboratory of Crop Stress Biology for Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Xuan Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Yi Luo
- State Key Laboratory of Crop Stress Biology for Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Mengyuan Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Yanchao Gu
- State Key Laboratory of Crop Stress Biology for Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Yao Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Qiwei Chen
- State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Xihui Shen
- State Key Laboratory of Crop Stress Biology for Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Lei Xu
- State Key Laboratory of Crop Stress Biology for Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
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Yuan M, Liu B, Yang B, Dang W, Xie H, Lui S, Qiu C, Zhu H, Zhang W. Dysfunction of default mode network characterizes generalized anxiety disorder relative to social anxiety disorder and post-traumatic stress disorder. J Affect Disord 2023; 334:35-42. [PMID: 37127115 DOI: 10.1016/j.jad.2023.04.099] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 01/03/2023] [Revised: 04/04/2023] [Accepted: 04/26/2023] [Indexed: 05/03/2023]
Abstract
BACKGROUND The perseverative cognition of generalized anxiety disorder (GAD) is distinctive compared to other anxiety disorders. However, the disease-specific and shared neuropathophysiological mechanisms of GAD remain unclear. METHODS We recruited medication-free patients of GAD (N = 33), social anxiety disorder (SAD; N = 36), post-traumatic stress disorder (PTSD; N = 59), and healthy controls (HC; N = 50). All subjects underwent clinical assessments and resting-state functional magnetic resonance imaging. We compared both the amplitude low-frequency fluctuation (ALFF) and seed-based functional connectivity across the whole brain, using the significantly different regions from the ALFF analyses as seed regions, followed by post-hoc tests. RESULTS We found that ALFF of the left angular gyrus (AG), left inferior parietal lobule (IPL), left precentral gyrus, left middle temporal gyrus, and left cerebellum were higher in GAD compared with SAD, PTSD and HC. This trend was further corroborated by the higher functional connectivity between left AG and bilateral IPL, left inferior temporal gyrus, and left medial prefrontal cortex (mPFC) in GAD. In addition, GAD and SAD both showed abnormally higher left AG-right insula connectivity. Significant correlations were found between anxiety symptom severity and the left AG regional activity and left AG-left mPFC connectivity. LIMITATIONS We did not compare the differences in neuroimaging between GAD and other anxiety disorders, such as panic disorder. CONCLUSIONS The default mode network dysfunction may underlie the distinctive perseverative thoughts of GAD relative to other anxiety disorders, and left AG-right insula connectivity may reflect somatic anxiety of anxiety disorder spectrum.
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Affiliation(s)
- Minlan Yuan
- Mental Health Center and Psychiatric Laboratory, the State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, China; Huaxi Brain Research Center, West China Hospital of Sichuan University, Chengdu, China
| | - Bo Liu
- Mental Health Center and Psychiatric Laboratory, the State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, China; Huaxi Brain Research Center, West China Hospital of Sichuan University, Chengdu, China
| | - Biao Yang
- Department of Abdominal Oncology, West China Hospital, Sichuan University, Chengdu, China
| | - Wen Dang
- West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, China; Medical Big Data Center, Sichuan University, Chengdu, China
| | - Hua Xie
- Children's National Hospital and Center for Neuroscience, Washington, DC, USA
| | - Su Lui
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Changjian Qiu
- Mental Health Center and Psychiatric Laboratory, the State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, China; Huaxi Brain Research Center, West China Hospital of Sichuan University, Chengdu, China; Mental Health Center, West China Hospital of Sichuan University, No. 37 GuoXue Xiang, Chengdu 610041, China.
| | - Hongru Zhu
- Mental Health Center and Psychiatric Laboratory, the State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, China; Huaxi Brain Research Center, West China Hospital of Sichuan University, Chengdu, China; Med-X Center for Informatics, Sichuan University, Chengdu 610041, Sichuan, China; Mental Health Center, West China Hospital of Sichuan University, No. 37 GuoXue Xiang, Chengdu 610041, China.
| | - Wei Zhang
- Mental Health Center and Psychiatric Laboratory, the State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, China; Huaxi Brain Research Center, West China Hospital of Sichuan University, Chengdu, China; West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, China; Medical Big Data Center, Sichuan University, Chengdu, China
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He D, Yuan M, Dang W, Bai L, Yang R, Wang J, Ma Y, Liu B, Liu S, Zhang S, Liao X, Zhang W. Long term neuropsychiatric consequences in COVID-19 survivors: Cognitive impairment and inflammatory underpinnings fifteen months after discharge. Asian J Psychiatr 2023; 80:103409. [PMID: 36549172 PMCID: PMC9751007 DOI: 10.1016/j.ajp.2022.103409] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [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: 10/08/2022] [Revised: 12/08/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022]
Abstract
BACKGROUND Emerging evidence shows that cognitive dysfunction may occur following coronavirus disease 19 (COVID-19) infection which is one of the most common symptoms reported in researches of "Long COVID". Several inflammatory markers are known to be elevated in COVID-19 survivors and the relationship between long-term inflammation changes and cognitive function remains unknown. METHODS We assessed cognitive function and neuropsychiatric symptoms of 66 COVID-19 survivors and 79 healthy controls (HCs) matched with sex, age, and education level using a digital, gamified cognitive function evaluation tool and questionnaires at 15 months after discharge. Venous blood samples were collected to measure cytokine levels. We performed correlation analyses and multiple linear regression analysis to identify the factors potentially related to cognitive function. RESULTS The COVID-19 survivors performed less well on the Trails (p = 0.047) than the HCs, but most of them did not report subjective neuropsychiatric symptoms. Intensive care unit experience (β = -2.247, p < 0.0001) and self-perceived disease severity (β = -1.522, p = 0.007) were positively correlated, whereas years of education (β = 0.098, p = 0.013) was negatively associated with the performance on the Trails. Moreover, the abnormally elevated TNF-α levels (r = -0.19, p = 0.040) were negatively correlated with performance on the Trails in COVID-19 group. CONCLUSION Our findings suggest that COVID-19 survivors show long-term cognitive impairment in executive function, even at 15 months after discharge. Serum TNF-α levels may be an underlying mechanism of long-term cognitive impairment in patients recovering from COVID-19.
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Affiliation(s)
- Danmei He
- Mental Health Center and Psychiatric Laboratory, West China Hospital of Sichuan University, Chengdu, China; West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, China; Med-X Center for Informatics, Sichuan University, Chengdu, China
| | - Minlan Yuan
- Mental Health Center and Psychiatric Laboratory, West China Hospital of Sichuan University, Chengdu, China; Huaxi Brain Research Center, West China Hospital of Sichuan University, Chengdu, China.
| | - Wen Dang
- Mental Health Center and Psychiatric Laboratory, West China Hospital of Sichuan University, Chengdu, China; West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, China; Med-X Center for Informatics, Sichuan University, Chengdu, China
| | - Lin Bai
- Mental Health Center and Psychiatric Laboratory, West China Hospital of Sichuan University, Chengdu, China
| | - Runnan Yang
- Mental Health Center and Psychiatric Laboratory, West China Hospital of Sichuan University, Chengdu, China
| | - Jingyi Wang
- Mental Health Center and Psychiatric Laboratory, West China Hospital of Sichuan University, Chengdu, China
| | - Yao Ma
- Mental Health Center and Psychiatric Laboratory, West China Hospital of Sichuan University, Chengdu, China
| | - Bo Liu
- Mental Health Center and Psychiatric Laboratory, West China Hospital of Sichuan University, Chengdu, China
| | - Shiyu Liu
- Mental Health Center and Psychiatric Laboratory, West China Hospital of Sichuan University, Chengdu, China
| | - Simai Zhang
- West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, China; Med-X Center for Informatics, Sichuan University, Chengdu, China
| | - Xiao Liao
- Mental Health Center and Psychiatric Laboratory, West China Hospital of Sichuan University, Chengdu, China
| | - Wei Zhang
- Mental Health Center and Psychiatric Laboratory, West China Hospital of Sichuan University, Chengdu, China; West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, China; Med-X Center for Informatics, Sichuan University, Chengdu, China; Huaxi Brain Research Center, West China Hospital of Sichuan University, Chengdu, China.
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9
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Dang W, Meng C, Wang J, Zhou D, Chen G, Li N. Exploration of the Binding Modes of Toll-Like Receptor 4 Competitive Inhibitors: A Combined Ligand-Based and Target-Based Approach. ChemMedChem 2023; 18:e202200690. [PMID: 36651317 DOI: 10.1002/cmdc.202200690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/14/2023] [Accepted: 01/17/2023] [Indexed: 01/19/2023]
Abstract
The interactions of Toll-like receptor 4 (TLR4) with competitive inhibitors were investigated by a combined ligand-based and target-based approach. Firstly, the ligand-based pharmacophore model of the reported TLR4 inhibitors was constructed by utilizing the common feature method, which included three hydrophobic groups and a hydrogen bond receptor. The Schrödinger software suite glide module was used to dock inhibitors with proteins and verify the importance of these four interaction points from the target level. Then, molecular dynamics, alanine scanning mutagenesis, and binding free energy calculation were used to identify the key amino acids in the binding mode. In addition, blind docking proved that the TLR4 inhibitor does not bind to TLR4 itself like other TLR family proteins. Based on this, we also screened a class of sesquiterpene coumarins which possibly have TLR4 inhibitory activity and will conduct a detailed study later. Together, this study revealed the interactions between TLR4 protein and its competitive inhibitors, which shed light on better access for developing its novel inhibitors.
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Affiliation(s)
- Wen Dang
- School of Traditional Chinese Materia Medica, Key Laboratory for TCM Material Basis Study and Innovative Drug Development of Shenyang City, Shenyang Pharmaceutical University, Shenyang, 110016, P.R. China
| | - Churen Meng
- School of Traditional Chinese Materia Medica, Key Laboratory for TCM Material Basis Study and Innovative Drug Development of Shenyang City, Shenyang Pharmaceutical University, Shenyang, 110016, P.R. China
| | - Jian Wang
- Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang, 110016, PR China
| | - Di Zhou
- School of Traditional Chinese Materia Medica, Key Laboratory for TCM Material Basis Study and Innovative Drug Development of Shenyang City, Shenyang Pharmaceutical University, Shenyang, 110016, P.R. China
| | - Gang Chen
- School of Traditional Chinese Materia Medica, Key Laboratory for TCM Material Basis Study and Innovative Drug Development of Shenyang City, Shenyang Pharmaceutical University, Shenyang, 110016, P.R. China
| | - Ning Li
- School of Traditional Chinese Materia Medica, Key Laboratory for TCM Material Basis Study and Innovative Drug Development of Shenyang City, Shenyang Pharmaceutical University, Shenyang, 110016, P.R. China
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Dang W, Li T, Xu F, Wang Y, Yang F, Zheng H. Modeling senecavirus a replication in immortalized porcine alveolar macrophages triggers a robust interferon-mediated immune response that conversely constrains viral replication. Virology 2023; 578:141-153. [PMID: 36571990 DOI: 10.1016/j.virol.2022.12.001] [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: 08/10/2022] [Revised: 11/27/2022] [Accepted: 12/02/2022] [Indexed: 12/23/2022]
Abstract
Senecavirus A (SVA) is a newly emerging causative agent of vesicular diseases in swine characterized with wide genetic diversity and rapid evolution. The lack of immunologically active cell culture model impedes the study of SVA-specific innate immunity. Here, an immortalized porcine alveolar macrophages 3D4/21 strongly and productively supported replication of two SVA strains. To elaborate global and dynamic host immune response, we demonstrated that 3D4/21 intrinsically expressed canonical ISGs which were important for pre-empting viral infection. Moreover, 3D4/21 were constitutively abundant in RIG-I-like receptors (RLRs) RIG-I and MDA5 necessary for sensing RNA virus infection, thereby enabling 3D4/21 cells to establish persistent and efficient antiviral status, in particular the most dramatic and sustained expression of type I/II interferons and inflammatory and innate immune genes critical for constraining SVA replication. Our study reveals a pivotal regulatory connection between virus and host that points to the SVA pathogenesis and potential vaccine development.
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Affiliation(s)
- Wen Dang
- State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China
| | - Tao Li
- State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China
| | - Fan Xu
- State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China
| | - Yannan Wang
- Lanzhou University Second Hospital, The Department of Radiology, Lanzhou, 730030, China
| | - Fan Yang
- State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China
| | - Haixue Zheng
- State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China.
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Hao Z, Dang W, Zhu Q, Xu J. Long non-coding RNA UCA1 regulates MPP +-induced neuronal damage through the miR-671-5p/KPNA4 pathway in SK-N-SH cells. Metab Brain Dis 2022; 38:961-972. [PMID: 36515797 DOI: 10.1007/s11011-022-01118-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 10/30/2022] [Indexed: 12/15/2022]
Abstract
Parkinson's disease (PD) is an age-related neurodegenerative disease. Long non-coding RNA urothelial carcinoma-associated 1 (UCA1) is involved in the pathogenesis of PD. However, the pathogenesis of PD regulated by UCA1 has not been fully explained. We used 1-Methyl-4-phenylpyridinium (MPP+)-induced SK-N-SH cells for functional analysis. Expression levels of UCA1, microRNA (miR)-671-5p, and KPNA4 (karyopherin subunit alpha 4) mRNA were detected using quantitative real-time polymerase chain reaction (qRT-PCR). Cell viability and apoptosis were analyzed using MTT (3-(4,5-Dimethylthiazol-2-yl)-2,5-Diphenyltetrazolium Bromide) or flow cytometry assays. Some protein levels were measured by western blotting. The levels of pro-inflammatory cytokines were tested by ELISA (enzyme-linked immunosorbent assay). The levels of LDH (lactate dehydrogenase), MDA (malondialdehyde), and SOD (superoxide dismutase) were measured using corresponding kits. The relationship between UCA1 or KPNA4 and miR-671-5p was verified by dual-luciferase reporter assay and/or RNA immunoprecipitation (RIP) assay. MPP+ induced UCA1 expression in SK-N-SH cells in a concentration-dependent manner or time-dependent manner. UCA1 knockdown reduced MPP+-induced apoptosis, inflammation, and oxidative stress in SK-N-SH cells. MiR-671-5p was downregulated while KPNA4 was upregulated in MPP+-treated SK-N-SH cells. UCA1 sponged miR-671-5p to regulate KPNA4 expression. MiR-671-5p inhibition counteracted UCA1 knockdown-mediated influence on apoptosis, inflammation, and oxidative stress of MPP+-induced SK-N-SH cells. KPNA4 overexpression offset the inhibitory influence of miR-671-5p mimic on apoptosis, inflammation, and oxidative stress of MPP+-treated SK-N-SH cells. UCA1 inhibition reduced MPP+-induced neuronal damage through the miR-671-5p/KPNA4 pathway in SK-N-SH cells, providing a novel mechanism to understand the pathogenesis of PD.
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Affiliation(s)
- Zhengheng Hao
- Department of Neurosurgery, Second Hospital of Shanxi Medical University, No. 382, Wuyi Road, Xinghualing District, Taiyuan City, Shanxi Province, 030001, China
| | - Wen Dang
- Department of Pharmacy, Second Hospital of Shanxi Medical University, 030001, Taiyuan, Shanxi, China
| | - Qingfeng Zhu
- Department of Neurosurgery, Second Hospital of Shanxi Medical University, No. 382, Wuyi Road, Xinghualing District, Taiyuan City, Shanxi Province, 030001, China.
| | - Jianxing Xu
- Department of Neurosurgery, Second Hospital of Shanxi Medical University, No. 382, Wuyi Road, Xinghualing District, Taiyuan City, Shanxi Province, 030001, China
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Xu F, Dang W, Li T, Wang Y, Yang F, Zheng H. IFIT3 mediated the type I interferon antiviral response by targeting Senecavirus A entry, assembly and release pathways. Vet Microbiol 2022; 275:109594. [DOI: 10.1016/j.vetmic.2022.109594] [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: 04/27/2022] [Revised: 09/28/2022] [Accepted: 10/26/2022] [Indexed: 11/06/2022]
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Dang W, Li T, Xu F, Wang Y, Yang F, Zheng H. Establishment of a CRISPR/Cas9 knockout library for screening type I interferon-inducible antiviral effectors in pig cells. Front Immunol 2022; 13:1016545. [PMID: 36505425 PMCID: PMC9732717 DOI: 10.3389/fimmu.2022.1016545] [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: 08/11/2022] [Accepted: 10/26/2022] [Indexed: 11/26/2022] Open
Abstract
Diseases caused by emerging swine viruses had a great economic impact, constituting a new challenge for researchers and practicing veterinarians. Innate immune control of viral pathogen invasion is mediated by interferons (IFNs), resulting in transcriptional elevation of hundreds of IFN-stimulated genes (ISGs). However, the ISG family is vast and species-specific, and despite remarkable advancements in uncovering the breadth of IFN-induced gene expression in mouse and human, it is less characterized with respect to the repertoire of porcine ISGs and their functional annotation. Herein, with the application of RNA-sequencing (RNA-Seq) gene profiling, the breadth of IFN-induced gene expression in the context of type I IFN stimulation was explored by using IBRS-2 cell, a commonly used high-efficient cultivation system for porcine picornaviruses. By establishing inclusion criteria, a total of 359 ISGs were selected. Aiming to identify key effectors mediating type I IFN inhibition of swine viruses, a CRISPR/Cas9 knockout library of 1908 sgRNAs targeting 5' constitutive exons of 359 ISGs with an average of 5 to 6 sgRNAs per gene was constructed. Using VSV-eGFP (vesicular stomatitis virus, fused with GFP) as a model virus, a subset of highest-ranking candidates were identified, including previously validated anti-VSV genes IRF9, IFITM3, LOC100519082 and REC8, as well as several novel hits. This approach attains a high level of feasibility and reliability, and a high rate of hit identification, providing a forward-looking platform to systematically profile the effectors of type I IFN antiviral response against porcine viruses.
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Affiliation(s)
- Wen Dang
- State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Tao Li
- State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Fan Xu
- State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Yannan Wang
- Lanzhou University Second Hospital, Department of Radiology, Lanzhou, China
| | - Fan Yang
- State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Haixue Zheng
- State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China,*Correspondence: Haixue Zheng,
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14
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Yang R, Cao Y, He D, Dang W, Qiu C, Zhang W. Social anxiety disorder in an adolescent with agenesis of the corpus callosum: a case report. BMC Psychiatry 2022; 22:714. [PMID: 36384487 PMCID: PMC9670649 DOI: 10.1186/s12888-022-04332-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 10/22/2022] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND The agenesis of corpus callosum (ACC) could impair the connectivity of the hemispheres of the cerebral cortex and cause cognitive impairments, social and behavioral issues, and even psychiatric disorders. Although social deficits are common in ACC patients, it is rare for a social anxiety disorder to occur. CASE PRESENTATION To report a 17-year-old adolescent with complete ACC associated with social anxiety disorder, depression, impulsive behavior, and other neurodevelopmental defects such as intellectual disabilities. His avoidance and fear were improved after treatment with sertraline. CONCLUSIONS This is the first report of social anxiety disorder in ACC patients. The possible relationship between brain structural abnormities and anxiety syndrome should be investigated in more studies.
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Affiliation(s)
- Runnan Yang
- grid.412901.f0000 0004 1770 1022Mental Health Center, West China Hospital, Sichuan University, 28 Dianxin Street, Chengdu, Sichuan China
| | - Yuan Cao
- grid.412901.f0000 0004 1770 1022Department of Nuclear Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan China ,grid.412901.f0000 0004 1770 1022Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan China
| | - Danmei He
- grid.412901.f0000 0004 1770 1022West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, Sichuan China
| | - Wen Dang
- grid.412901.f0000 0004 1770 1022West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, Sichuan China
| | - Changjian Qiu
- Mental Health Center, West China Hospital, Sichuan University, 28 Dianxin Street, Chengdu, Sichuan, China.
| | - Wei Zhang
- Mental Health Center, West China Hospital, Sichuan University, 28 Dianxin Street, Chengdu, Sichuan, China.
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Guo T, Dang W, Zhou Y, Zhou D, Meng Q, Xu L, Chen G, Lin B, Qing D, Sun Y, Hou Y, Li N. Sesquiterpene coumarins isolated from Ferula bungeana and their anti-neuroinflammatory activities. Bioorg Chem 2022; 128:106102. [PMID: 35998519 DOI: 10.1016/j.bioorg.2022.106102] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Revised: 08/10/2022] [Accepted: 08/14/2022] [Indexed: 11/02/2022]
Abstract
This is the first study to profile natural sesquiterpene coumarins (SCs) in Ferula bungeana, a medicinal plant of the genus Ferula in China. Eight undescribed sesquiterpene coumarins (1-8), along with six known ones (9-14) were obtained from the whole plant of F. bungeana. These unreported SCs (1-8) enriched the structural diversity of natural SCs, especially these with the hydroxy or carbonyl group at C-7' and a hydroperoxy group at C-7' or C-8'. Compounds (9-14) were reported for the first time from this plant. The in vitro anti-neuroinflammatory activity assay showed that compounds 2 and 9 showed stronger inhibitory effect on nitric oxide (NO) production in lipopolysaccharide (LPS)-induced BV-2 microglia, compared with positive control minocycline, and compounds 5 and 10 showed moderate inhibitory effects.
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Affiliation(s)
- Tingting Guo
- School of Traditional Chinese Materia Medica, Key Laboratory for TCM Material Basis Study and Innovative Drug Development of Shenyang City, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Wen Dang
- School of Traditional Chinese Materia Medica, Key Laboratory for TCM Material Basis Study and Innovative Drug Development of Shenyang City, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Yaping Zhou
- School of Traditional Chinese Materia Medica, Key Laboratory for TCM Material Basis Study and Innovative Drug Development of Shenyang City, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Di Zhou
- School of Traditional Chinese Materia Medica, Key Laboratory for TCM Material Basis Study and Innovative Drug Development of Shenyang City, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Qingqi Meng
- College of Life and Health Sciences, Northeastern University, Shenyang 110004, China; State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin, China
| | - Libin Xu
- College of Life and Health Sciences, Northeastern University, Shenyang 110004, China; State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin, China
| | - Gang Chen
- School of Traditional Chinese Materia Medica, Key Laboratory for TCM Material Basis Study and Innovative Drug Development of Shenyang City, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Bin Lin
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Degang Qing
- XinJiang Institute of Chinese Materia Medica and Ethnodrug, Urumqi, China
| | - Yu Sun
- XinJiang Institute of Chinese Materia Medica and Ethnodrug, Urumqi, China
| | - Yue Hou
- College of Life and Health Sciences, Northeastern University, Shenyang 110004, China; State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin, China.
| | - Ning Li
- School of Traditional Chinese Materia Medica, Key Laboratory for TCM Material Basis Study and Innovative Drug Development of Shenyang City, Shenyang Pharmaceutical University, Shenyang 110016, China.
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Abstract
Pathogens of viral origin produce a large variety of infectious diseases in livestock. It is essential to establish the best practices in animal care and an efficient way to stop and prevent infectious diseases that impact animal husbandry. So far, the greatest way to combat the disease is to adopt a vaccine policy. In the fight against infectious diseases, vaccines are very popular. Vaccination's fundamental concept is to utilize particular antigens, either endogenous or exogenous to induce immunity against the antigens or cells. In light of how past emerging and reemerging infectious diseases and pandemics were handled, examining the vaccination methods and technological platforms utilized for the animals may provide some useful insights. New vaccine manufacturing methods have evolved because of developments in technology and medicine and our broad knowledge of immunology, molecular biology, microbiology, and biochemistry, among other basic science disciplines. Genetic engineering, proteomics, and other advanced technologies have aided in implementing novel vaccine theories, resulting in the discovery of new ruminant vaccines and the improvement of existing ones. Subunit vaccines, recombinant vaccines, DNA vaccines, and vectored vaccines are increasingly gaining scientific and public attention as the next generation of vaccines and are being seen as viable replacements to conventional vaccines. The current review looks at the effects and implications of recent ruminant vaccine advances in terms of evolving microbiology, immunology, and molecular biology.
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Affiliation(s)
- Sk Mohiuddin Choudhury
- State Key Laboratory of Veterinary Etiological Biology, National Foot and Mouth Disease Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - XuSheng Ma
- State Key Laboratory of Veterinary Etiological Biology, National Foot and Mouth Disease Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Wen Dang
- State Key Laboratory of Veterinary Etiological Biology, National Foot and Mouth Disease Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - YuanYuan Li
- Gansu Agricultural University, Lanzhou, China
| | - HaiXue Zheng
- State Key Laboratory of Veterinary Etiological Biology, National Foot and Mouth Disease Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
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Dang W, Liu Y, Zhou Q, Duan Y, Gan H, Wang L, Zhu Q, Xie C, Hu A. Risk factors of medical device-related pressure injury in intensive care units. J Clin Nurs 2021; 31:1174-1183. [PMID: 34309103 DOI: 10.1111/jocn.15974] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 06/29/2021] [Accepted: 06/30/2021] [Indexed: 02/05/2023]
Abstract
OBJECTIVES Intensive care unit (ICU) patients are at high risk of medical device related pressure injury (MDRPI). This study aims to ascertain the MDRPI prevalence in ICU patients and analyse the risk factors of MDRPI. BACKGROUND The occurrence of MDRPI not only increases hospitalisation time with pain and economic burden, but also causes medical disputes. A better understanding of this condition will increase knowledge and facilitate the ability to recognise and prevent MDRPI for clinical nursing staff. However, there are few multicentre studies of MDRPI prevalence in ICU patients in China. DESIGN A cross-sectional study design was employed. METHODS Data from 694 patients in 66 adult ICU at 30 hospitals in China were included between October 2018 and March 2019. The stage of each MDRPI was determined according to the definitions of National Pressure Ulcer Advisory Panel. The study methods were followed by the STORBE guidelines. RESULTS The overall prevalence rate of MDRPI was 13.1% (91/694), with 98 anatomic locations in total. The most common stages of MDRPI were stage 1 (54.1%, 53/98), stage 2 (15.3%, 15/98) and mucosal membrane pressure injury (15.3%, 15/98). MDRPI mainly occurred in the finger (32.7%, 32/98), followed by nose (18.4%, 18/98). The prevalence rate of MDRPI caused by CPAP or BiPAP masks (25%) was highest. Lower Braden scores and having skin oedema were risk factors for MDRPI in adult ICU patients. CONCLUSION The prevalence of MDRPI in this study was still high. Nurses should take these related factors into consideration when taking care of ICU patients, and appropriate prevention measures should be adopted to decrease the prevalence of MDRPI. RELEVANCE TO CLINICAL PRACTICE The study can help to improve the PI prevention efforts in ICU patients specific to medical device related PI.
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Affiliation(s)
- Wen Dang
- School of Nursing, Sun Yat-sen University, Guangzhou, China.,Mental Health Centre, West China Hospital, Sichuan University, Chengdu, China
| | - Yuan Liu
- The Third Affilated Hospital of Sun Yat-sen University, Lingnan Hospital, Guangzhou, China
| | - Qing Zhou
- The Third Affilated Hospital of Sun Yat-sen University, Lingnan Hospital, Guangzhou, China
| | - Yuyu Duan
- State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Huaxiu Gan
- Zhujiang Hospital of Southern Medical University, Guangzhou, China
| | - Lin Wang
- Zhongshan People's Hospital, Zhongshan, China
| | | | - Chunyan Xie
- People's Hospital of Yangjiang, Yangjiang, China
| | - Ailing Hu
- The Third Affilated Hospital of Sun Yat-sen University, Lingnan Hospital, Guangzhou, China
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18
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Pan F, Wang X, Wen B, Wang C, Xu Y, Dang W, Zhang M. Development of walnut oil and almond oil blends for improvements in nutritional and oxidative stability. Grasas y Aceites 2020. [DOI: 10.3989/gya.0920192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
For the increase in oxidative stability and phytonutrient contents of walnut oil (WO), 5, 10, 20 and 30% blends with almond oil (AO) were prepared. The fatty acid compositions and the micronutrients of the oil samples such as tocopherol, phytosterol and squalene were measured by GC-MS and HPLC. It was found that the proportions of PUFAs/SFAs in blended oils with high AO contents were lowered, and the blends contained higher levels of tocopherols, phytosterols and squalene than those of pure WO. The 60 °C oven accelerated oxidation test was used to determine the oxidative stability of the blended oil. The fatty acid composition, micronutrients and oxidation products were determined. The results showed that the oxidation stability of the blended oil increased with an increasing proportion of AO. In addition, a significant negative correlation between micronutrient and oxidation products was observed as the number of days of oxidation increased.
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Dang W, Zhu Z. MicroRNA-1249 targets four-jointed box kinase 1 and reduces cell proliferation, migration and invasion of colon adenocarcinoma. J Gene Med 2020; 22:e3183. [PMID: 32159255 DOI: 10.1002/jgm.3183] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Revised: 03/10/2020] [Accepted: 03/10/2020] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND MiR-1249 was demonstrated to be dysregulated and related to prognosis in cancers. It has been reported to be significantly down-regulated in colon adenocarcinoma (COAD). The present study aimed to explore the clinical value and biological roles of miR-1249 in the progression of COAD. METHODS miRWalk was applied to predict potential targets of miR-1249. We investigated the expression patterns of miR-1249 and its potential target Four-Jointed Box Kinase 1 (FJX1) in COAD samples from The Cancer Genome Atlas (TCGA) or ONCOMINE database. Kaplan-Meier with a log-rank test was used to reveal the relationship between overall survival (OS) and miR-1249/FJX1. The predictive ability of miR-1249/FJX1 was investigated using univariate and multivariate Cox regression models. CCK-8 and Transwell assays were performed to determine whether miR-1249 was connected with cell viability, migration and invasion. A luciferase reporter assay was applied to verify the association of miR-1249 and FJX1 as its predicted target gene. RESULTS We predicted and confirmed FJX1 to be a target gene of miR-1249. MiR-1249 was down-regulated in COAD samples and cell lines. Univariate and multivariate analysis showed that the expression of FJX1 could be regarded as independent predictor for COAD. Moreover, miR-1249 and FJX1 were respectively the indicators of favorable and poor OS. MiR-1249 over-expression repressed cell growth, migration and invasion. Overexpression of FJX1 in cells treated with miR-1249 mimic abolished the inhibitory effect of miR-1249 on cell growth, migration and invasion. CONCLUSIONS miR-1249 exerts a suppressive effect on cell proliferation, migration and invasion in COAD, which is possibly achieved via modulating FJX1.
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Affiliation(s)
- Wen Dang
- General Surgery, The Fifth People's Hospital of Jinan, Jinan, Shandong, China
| | - Zhen Zhu
- Department of Gastrointestinal Surgery, Jining First People's Hosptial, Jining, Shandong, China
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20
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Dang W, Ma JT, Chen H, Yuan F, Ma XM, Zhan J. [Analysis of infection status and recombination types of norovirus in patients with acute gastroenteritis in the Ningxia Hui Autonomous Region from 2016 to 2017]. Zhonghua Yu Fang Yi Xue Za Zhi 2019; 53:811-816. [PMID: 31378041 DOI: 10.3760/cma.j.issn.0253-9624.2019.08.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the infection status and recombination of Norovirus in patients with acute gastroenteritis in Ningxia. Methods: The specimens of 10 sentinel hospitals in Ningxia were collected from 2016 to 2017. Real-time quantitative PCR was used for nucleic acid detection. GⅡ-positive samples were amplified by RT-PCR for the RdRp and Capsid regions, then sequenced and genotyped. Evolution analysis was performed using software such as MEGA-X, and recombination analysis was performed using Simplot 3.5.1 and RDP4. Results: The age of the 2 334 cases was 1.42 (0.68, 7.69) years old, 1 133 cases in 2016 and 1 201 cases in 2017, 1 343 and 991 cases for males and females respectively. The positive rate of Norovirus GⅠ genogroup was 0.86% (20/2 334), and GⅡ genogroup was 14.82% (346/2 334). A total of 78 recombinant strains were sequenced and 12 recombinant types were found. GⅡ.Pe/GⅡ.4Sydney_2012 and GⅡ.P12/GⅡ.3 were the main epidemic strains, accounting for 35.90% (28 strains) and 32.05% (25 strain) respectively, followed by GⅡ.P16/GⅡ.2 accounting for 12.82% (10 strains). Among them,GⅡ.P7/GⅡ.6 (2 strains), GⅡ.P12/GⅡ.3 (6 strains), GⅡ.P16/GⅡ.1 (2 strains), GⅡ.P16/GⅡ.2 (5 strains), GⅡ.Pe/GⅡ.4 (7 strains) were detected for the first time in Ningxia. Recombinant strains were all intergenotype recombination, and the recombination breakpionts were all located within ORF1. Conclusion: Norovirus infection in Ningxia area was mainly in GⅡ genogroup from 2016 to 2017, and most of them were recombinant strains. GⅡ.Pe/GⅡ.4Sydney_2012 and GⅡ.P12/GⅡ.3 were the main epidemic strains, followed by GⅡ.P16/GⅡ. 2.
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Affiliation(s)
- W Dang
- School of Public Health and Management of Ningxia Medical University, Yinchuan 750004, China
| | - J T Ma
- School of Public Health and Management of Ningxia Medical University, Yinchuan 750004, China
| | - H Chen
- School of Public Health and Management of Ningxia Medical University, Yinchuan 750004, China
| | - F Yuan
- School of Public Health and Management of Ningxia Medical University, Yinchuan 750004, China
| | - X M Ma
- School of Public Health and Management of Ningxia Medical University, Yinchuan 750004, China
| | - J Zhan
- Viral Department, Ningxia Center for Disease Control and Prevention, Yinchuan 750004, China
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21
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Dang W, Shang S, Zhang X, Yu Y, Irwin DM, Wang Z, Zhang S. A novel 13-plex STR typing system for individual identification and parentage testing of donkeys (Equus asinus). Equine Vet J 2019; 52:290-297. [PMID: 31398262 DOI: 10.1111/evj.13158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 04/24/2019] [Accepted: 07/27/2019] [Indexed: 11/28/2022]
Abstract
BACKGROUND Previous studies investigating donkey parentage and genetic diversity used horse-specific multiplex systems. However, several mis-allele and null-allele issues were found with some of the horse primers when used in donkeys. In 2017, the International Society for Animal Genetics (ISAG) recommended 13 dinucleotide short tandem repeats (STRs) (AHT4, ASB23, HMS2, HMS3, HMS6, HMS7, HMS18, HTG7, HTG10, TKY297, TKY312, TKY337 and TKY343) as a core panel that should be used to identify individuals and to test for parentage in donkeys. To date, no single multiplex STR typing system containing all 13 donkey STRs recommended by the ISAG has been reported. OBJECTIVES To establish a novel and donkey-specific multiplex STR typing system containing all 13 recommended STRs. STUDY DESIGN Assay development and validation in field population. METHODS Primers for seven of the STRs were redesigned and conditions for polymerase chain reaction (PCR) were optimised. We analysed the allele sequences, sensitivity, species-specificity and stutter ratios of this new system. RESULTS A 13-plex STR typing system for donkey was established. A full profile could be generated from a single PCR reaction using as little as 5 ng of DNA template with the 13 pairs of primers labelled with fluorescent dyes. An allele ladder, containing 101 alleles from the 13 STRs, was generated. No full genotype profile was generated with these primers if DNA from humans, or 11 other commonly encountered animals, was used. Genotypes could be generated for the horse and horse-donkey hybrids (mule and hinny). Stutter ratios and population genetic parameters were calculated based on samples from 150 donkeys. The combined probabilities of paternity exclusion for this system were 0.988907326 (CPEduo) and 0.999665018 (CPEtrio). MAIN LIMITATIONS This system cannot detect sex. CONCLUSIONS Our results indicate that our donkey-specific 13-plex STR typing system is sensitive, species-specific and robust for individual identification, paternity testing and population genetic analysis in donkeys, and has potential forensic applications.
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Affiliation(s)
- W Dang
- Institute of Equine Sciences, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, China
| | - S Shang
- Institute of Equine Sciences, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, China
| | - X Zhang
- Liaoning Province Engineering Center of Modern Agricultural Production Base, Shenyang, China
| | - Y Yu
- Institute of Equine Sciences, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, China
| | - D M Irwin
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | - Z Wang
- Institute of Equine Sciences, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, China
| | - S Zhang
- Institute of Equine Sciences, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, China
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22
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Li P, Zhu Z, Zhang X, Dang W, Li L, Du X, Zhang M, Wu C, Xue Q, Liu X, Zheng H, Nan Y. The Nucleoprotein and Phosphoprotein of Peste des Petits Ruminants Virus Inhibit Interferons Signaling by Blocking the JAK-STAT Pathway. Viruses 2019; 11:v11070629. [PMID: 31288481 PMCID: PMC6669484 DOI: 10.3390/v11070629] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [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: 06/17/2019] [Revised: 07/03/2019] [Accepted: 07/06/2019] [Indexed: 12/24/2022] Open
Abstract
Peste des petits ruminants virus (PPRV) is associated with global peste des petits ruminants resulting in severe economic loss. Peste des petits ruminants virus dampens host interferon-based signaling pathways through multiple mechanisms. Previous studies deciphered the role of V and C in abrogating IFN-β production. Moreover, V protein directly interacted with signal transducers and activators of transcription 1 (STAT1) and STAT2 resulting in the impairment of host IFN responses. In our present study, PPRV infection inhibited both IFN-β- and IFN-γ-induced activation of IFN-stimulated response element (ISRE) and IFN-γ-activated site (GAS) element, respectively. Both N and P proteins, functioning as novel IFN response antagonists, markedly suppressed IFN-β-induced ISRE and IFN-γ-induced GAS promoter activation to impair downstream upregulation of various interferon-stimulated genes (ISGs) and prevent STAT1 nuclear translocation. Specifically, P protein interacted with STAT1 and subsequently inhibited STAT1 phosphorylation, whereas N protein neither interacted with STAT1 nor inhibited STAT1 phosphorylation as well as dimerization, suggesting that the N and P protein antagonistic effects were different. Though they differed in their relationship to STAT1, both proteins blocked JAK-STAT signaling, severely negating the host antiviral immune response. Our study revealed a new mechanism employed by PPRV to evade host innate immune response, providing a platform to study the interaction of paramyxoviruses and host response.
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Affiliation(s)
- Pengfei Li
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China
- State Key Laboratory of Veterinary Etiological Biology, National Foot and Mouth Diseases Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Zixiang Zhu
- State Key Laboratory of Veterinary Etiological Biology, National Foot and Mouth Diseases Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Xiangle Zhang
- State Key Laboratory of Veterinary Etiological Biology, National Foot and Mouth Diseases Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Wen Dang
- State Key Laboratory of Veterinary Etiological Biology, National Foot and Mouth Diseases Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Linlin Li
- State Key Laboratory of Veterinary Etiological Biology, National Foot and Mouth Diseases Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Xiaoli Du
- State Key Laboratory of Veterinary Etiological Biology, National Foot and Mouth Diseases Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Miaotao Zhang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China
| | - Chunyan Wu
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China
| | - Qinghong Xue
- China Institute of Veterinary Drug Control, Beijing100081, China
| | - Xiangtao Liu
- State Key Laboratory of Veterinary Etiological Biology, National Foot and Mouth Diseases Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Haixue Zheng
- State Key Laboratory of Veterinary Etiological Biology, National Foot and Mouth Diseases Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China.
| | - Yuchen Nan
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China.
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23
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Shang S, Zhang M, Zhao Y, Dang W, Hua P, Zhang S, Wang Z. Development and validation of a novel 13‐plex
PCR
system for commonly used short tandem repeats in horses (
Equus caballus
). Equine Vet J 2018; 51:688-695. [DOI: 10.1111/evj.13047] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 11/13/2018] [Indexed: 11/30/2022]
Affiliation(s)
- S. Shang
- Institute of Equine Sciences College of Animal Science and Veterinary Medicine Shenyang Agricultural University Shenyang PR China
- College of Food Science Shenyang Agricultural University Shenyang PR China
| | - M. Zhang
- College of Economics and Management Shenyang Agricultural University Shenyang PR China
| | - Y. Zhao
- Institute of Equine Sciences College of Animal Science and Veterinary Medicine Shenyang Agricultural University Shenyang PR China
| | - W. Dang
- Institute of Equine Sciences College of Animal Science and Veterinary Medicine Shenyang Agricultural University Shenyang PR China
| | - P. Hua
- School of Ecological and Environmental Sciences East China Normal University Shanghai PR China
| | - S. Zhang
- Institute of Equine Sciences College of Animal Science and Veterinary Medicine Shenyang Agricultural University Shenyang PR China
| | - Z. Wang
- Institute of Equine Sciences College of Animal Science and Veterinary Medicine Shenyang Agricultural University Shenyang PR China
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24
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Affiliation(s)
- Wen Dang
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, the Netherlands
| | - Yuebang Yin
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, the Netherlands
| | - Maikel P Peppelenbosch
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, the Netherlands
| | - Qiuwei Pan
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, the Netherlands
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25
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Masterson SP, Zhou N, Akers BK, Dang W, Bickford ME. Ultrastructural and optogenetic dissection of V1 corticotectal terminal synaptic properties. J Comp Neurol 2018; 527:833-842. [PMID: 30255935 DOI: 10.1002/cne.24538] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [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: 05/14/2018] [Revised: 08/27/2018] [Accepted: 09/06/2018] [Indexed: 11/08/2022]
Abstract
The superior colliculus (SC) is a major site of sensorimotor integration in which sensory inputs are processed to initiate appropriate motor responses. Projections from the primary visual cortex (V1) to the SC have been shown to exert a substantial influence on visually induced behavior, including "freezing." However, it is unclear how V1 corticotectal terminals affect SC circuits to mediate these effects. To investigate this, we used anatomical and optogenetic techniques to examine the synaptic properties of V1 corticotectal terminals. Electron microscopy revealed that V1 corticotectal terminals labeled by anterograde transport primarily synapse (93%) on dendrites that do not contain gamma aminobutyric acid (GABA). This preference was confirmed using optogenetic techniques to photoactivate V1 corticotectal terminals in slices of the SC maintained in vitro. In a mouse line in which GABAergic SC interneurons express green fluorescent protein (GFP), few GFP-labeled cells (11%) responded to activation of corticotectal terminals. In contrast, 67% of non-GABAergic cells responded to activation of V1 corticotectal terminals. Biocytin-labeling of recorded neurons revealed that wide-field vertical (WFV) and non-WFV cells were activated by V1 corticotectal inputs. However, WFV cells were activated in the most uniform manner; 85% of these cells responded with excitatory postsynaptic potentials (EPSPs) that maintained stable amplitudes when activated with light trains at 1-20 Hz. In contrast, in the majority of non-WFV cells, the amplitude of evoked EPSPs varied across trials. Our results suggest that V1 corticotectal projections may initiate freezing behavior via uniform activation of the WFV cells, which project to the pulvinar nucleus.
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Affiliation(s)
- S P Masterson
- Anatomical Sciences and Neurobiology, University of Louisville, Louisville, Kentucky
| | - N Zhou
- Anatomical Sciences and Neurobiology, University of Louisville, Louisville, Kentucky
| | - B K Akers
- Anatomical Sciences and Neurobiology, University of Louisville, Louisville, Kentucky
| | - W Dang
- Anatomical Sciences and Neurobiology, University of Louisville, Louisville, Kentucky
| | - M E Bickford
- Anatomical Sciences and Neurobiology, University of Louisville, Louisville, Kentucky
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26
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Dang W, Xu L, Yin Y, Chen S, Wang W, Hakim MS, Chang KO, Peppelenbosch MP, Pan Q. IRF-1, RIG-I and MDA5 display potent antiviral activities against norovirus coordinately induced by different types of interferons. Antiviral Res 2018; 155:48-59. [PMID: 29753657 DOI: 10.1016/j.antiviral.2018.05.004] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [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: 01/21/2018] [Revised: 04/06/2018] [Accepted: 05/08/2018] [Indexed: 11/19/2022]
Abstract
Norovirus represents the main cause of acute nonbacterial gastroenteritis worldwide. In immunocompromised patients, it bears high risk of causing chronic infection with significant morbidity and mortality. The lack of specific treatment prompts the development of anti-norovirus agents. In this study, we have investigated the role of interferon (IFN) response and evaluated antiviral activities of different IFNs against human norovirus (HuNoV) replication using a HuNoV replicon model. We found that HuNoV RNA replication was sensitive to all types of IFNs, including IFNα (type I), IFNγ (type II), IFNλ1 and 3 (type III). IFNs canonically induce interferon-stimulated genes (ISGs) to exert their antiviral activities. By profiling a subset of important human ISGs using an overexpression approach, we have identified RTP4 and HPSE as moderate anti-norovirus ISGs, whereas IRF-1, RIG-I (also known as DDX58) and MDA5 (also known as IFIH1) were identified as potent anti-norovirus effectors. Interestingly, type I and III IFNs coordinately induced IRF-1, RIG-I and MDA5; whereas type II IFN predominantly induced IRF-1 to exhibit their anti-norovirus activities. Combination of different IFNs revealed that IFNγ worked cooperatively with type I or type III IFNs to induce ISGs and subsequently inhibit HuNoV replication. Of note, replication of HuNoV did not interfere with antiviral IFN response. In summary, we showed the potent anti-norovirus activities of different types of IFNs and identified the key anti-norovirus effectors. These findings are important for understanding norovirus-host interactions and developing antiviral therapies.
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Affiliation(s)
- Wen Dang
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, Netherlands
| | - Lei Xu
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, Netherlands
| | - Yuebang Yin
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, Netherlands
| | - Sunrui Chen
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, Netherlands
| | - Wenshi Wang
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, Netherlands
| | - Mohamad S Hakim
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, Netherlands
| | - Kyeong-Ok Chang
- Department of Diagnostic Medicine and Pathobiology, College of Veterinary Medicine, Kansas State University, USA
| | - Maikel P Peppelenbosch
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, Netherlands
| | - Qiuwei Pan
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, Netherlands.
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27
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Yin Y, Chen S, Hakim MS, Wang W, Xu L, Dang W, Qu C, Verhaar AP, Su J, Fuhler GM, Peppelenbosch MP, Pan Q. 6-Thioguanine inhibits rotavirus replication through suppression of Rac1 GDP/GTP cycling. Antiviral Res 2018; 156:92-101. [PMID: 29920300 PMCID: PMC7113846 DOI: 10.1016/j.antiviral.2018.06.011] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2017] [Revised: 06/11/2018] [Accepted: 06/15/2018] [Indexed: 02/06/2023]
Abstract
Rotavirus infection has emerged as an important cause of complications in organ transplantation recipients and might play a role in the pathogenesis of inflammatory bowel disease (IBD). 6-Thioguanine (6-TG) has been widely used as an immunosuppressive drug for organ recipients and treatment of IBD in the clinic. This study aims to investigate the effects and mode-of-action of 6-TG on rotavirus replication. Human intestinal Caco2 cell line, 3D model of human primary intestinal organoids, laboratory rotavirus strain (SA11) and patient-derived rotavirus isolates were used. We have demonstrated that 6-TG significantly inhibits rotavirus replication in these intestinal epithelium models. Importantly, gene knockdown or knockout of Rac1, the cellular target of 6-TG, significantly inhibited rotavirus replication, indicating the supportive role of Rac1 for rotavirus infection. We have further demonstrated that 6-TG can effectively inhibit the active form of Rac1 (GTP-Rac1), which essentially mediates the anti-rotavirus effect of 6-TG. Consistently, ectopic over-expression of GTP-Rac1 facilitates but an inactive Rac1 (N17) or a specific Rac1 inhibitor (NSC23766) inhibits rotavirus replication. In conclusion, we have identified 6-TG as an effective inhibitor of rotavirus replication via the inhibition of Rac1 activation. Thus, for transplantation patients or IBD patients infected with rotavirus or at risk of rotavirus infection, the choice of 6-TG as a treatment appears rational. 6-TG inhibits rotavirus infection. Rac1, the cellular target of 6-TG, supports rotavirus infection. 6-TG inhibits the active form of Rac1 (GTP-Rac1) to exert the anti-rotavirus effect.
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Affiliation(s)
- Yuebang Yin
- Center for Biomedical Research, Northwest Minzu University, Lanzhou, China; Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands; Institute of Subtropical Agriculture, Chinese Academic of Sciences, Changsha 410125, China
| | - Sunrui Chen
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Mohamad S Hakim
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands; Department of Microbiology, Faculty of Medicine, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Wenshi Wang
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Lei Xu
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Wen Dang
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Changbo Qu
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Auke P Verhaar
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Junhong Su
- Center for Biomedical Research, Northwest Minzu University, Lanzhou, China; Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands; Medical Faculty, Kunming University of Science and Technology, Kunming, PR China
| | - Gwenny M Fuhler
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Maikel P Peppelenbosch
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Qiuwei Pan
- Center for Biomedical Research, Northwest Minzu University, Lanzhou, China; Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands.
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28
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Sharifabadi AD, Korevaar DA, McGrath TA, van Es N, Frank RA, Cherpak L, Dang W, Salameh JP, Nguyen F, Stanley C, McInnes MDF. Reporting bias in imaging: higher accuracy is linked to faster publication. Eur Radiol 2018; 28:3632-3639. [PMID: 29564596 DOI: 10.1007/s00330-018-5354-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 12/28/2017] [Accepted: 01/24/2018] [Indexed: 12/12/2022]
Abstract
OBJECTIVES The objective of this study was to evaluate whether higher reported accuracy estimates are associated with shorter time to publication among imaging diagnostic accuracy studies. METHODS We included primary imaging diagnostic accuracy studies, included in meta-analyses from systematic reviews published in 2015. For each primary study, we extracted accuracy estimates, participant recruitment periods and publication dates. Our primary outcome was the association between Youden's index (sensitivity + specificity - 1, a single measure of diagnostic accuracy) and time to publication. RESULTS We included 55 systematic reviews and 781 primary studies. Study completion dates were missing for 238 (30%) studies. The median time from completion to publication in the remaining 543 studies was 20 months (IQR 14-29). Youden's index was negatively correlated with time from completion to publication (rho = -0.11, p = 0.009). This association remained significant in multivariable Cox regression analyses after adjusting for seven study characteristics: hazard ratio of publication was 1.09 (95% CI 1.03-1.16, p = 0.004) per unit increase for logit-transformed estimates of Youden's index. When dichotomizing Youden's index by a median split, time from completion to publication was 20 months (IQR 13-33) for studies with a Youden's index below the median, and 19 months (14-27) for studies with a Youden's index above the median (p = 0.104). CONCLUSION Imaging diagnostic accuracy studies with higher accuracy estimates were weakly associated with a shorter time to publication. KEY POINTS • Higher accuracy estimates are weakly associated with shorter time to publication. • Lag in time to publication remained significant in multivariate Cox regression analyses. • No correlation between accuracy and time from submission to publication was identified.
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Affiliation(s)
| | - D A Korevaar
- Department of Clinical Epidemiology, Biostatistics and Bioinformatics, Academic Medical Center, Amsterdam, The Netherlands
| | - T A McGrath
- Department of Radiology-Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - N van Es
- Department of Vascular Medicine, Academic Medical Center, Room F4-139, Meibergdreef 9, 1105, AZ, Amsterdam, The Netherlands
| | - R A Frank
- Department of Radiology-Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - L Cherpak
- Department of Radiology-Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - W Dang
- Department of Radiology-Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - J P Salameh
- School of Epidemiology and Public Health, University of Ottawa, Ottawa, ON, Canada
| | - F Nguyen
- Department of Radiology-Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - C Stanley
- Dalhousie University, Halifax, NS, Canada
| | - M D F McInnes
- Department of Radiology, Clinical Epidemiology Program, Ottawa Hospital Research Institute, University of Ottawa, Room c159 Ottawa Hospital Civic Campus, 1053 Carling Ave., Ottawa, ON, K1Y 4E9, Canada.
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29
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Dang W, Yin Y, Wang Y, Wang W, Su J, Sprengers D, van der Laan LJW, Felczak K, Pankiewicz KW, Chang KO, Koopmans MPG, Metselaar HJ, Peppelenbosch MP, Pan Q. Inhibition of Calcineurin or IMP Dehydrogenase Exerts Moderate to Potent Antiviral Activity against Norovirus Replication. Antimicrob Agents Chemother 2017; 61:e01095-17. [PMID: 28807916 PMCID: PMC5655111 DOI: 10.1128/aac.01095-17] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [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: 05/26/2017] [Accepted: 08/05/2017] [Indexed: 12/14/2022] Open
Abstract
Norovirus is a major cause of acute gastroenteritis worldwide and has emerged as an important issue of chronic infection in transplantation patients. Since no approved antiviral is available, we evaluated the effects of different immunosuppressants and ribavirin on norovirus and explored their mechanisms of action by using a human norovirus (HuNV) replicon-harboring model and a surrogate murine norovirus (MNV) infectious model. The roles of the corresponding drug targets were investigated by gain- or loss-of-function approaches. We found that the calcineurin inhibitors cyclosporine (CsA) and tacrolimus (FK506) moderately inhibited HuNV replication. Gene silencing of their cellular targets, cyclophilin A, FKBP12, and calcineurin, significantly inhibited HuNV replication. A low concentration, therapeutically speaking, of mycophenolic acid (MPA), an uncompetitive IMP dehydrogenase (IMPDH) inhibitor, potently and rapidly inhibited norovirus replication and ultimately cleared HuNV replicons without inducible resistance following long-term drug exposure. Knockdown of the MPA cellular targets IMPDH1 and IMPDH2 suppressed HuNV replication. Consistent with the nucleotide-synthesizing function of IMPDH, exogenous guanosine counteracted the antinorovirus effects of MPA. Furthermore, the competitive IMPDH inhibitor ribavirin efficiently inhibited norovirus and resulted in an additive effect when combined with immunosuppressants. The results from this study demonstrate that calcineurin phosphatase activity and IMPDH guanine synthase activity are crucial in sustaining norovirus infection; thus, they can be therapeutically targeted. Our results suggest that MPA shall be preferentially considered immunosuppressive medication for transplantation patients at risk of norovirus infection, whereas ribavirin represents as a potential antiviral for both immunocompromised and immunocompetent patients with norovirus gastroenteritis.
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Affiliation(s)
- Wen Dang
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Yuebang Yin
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Yijin Wang
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Wenshi Wang
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Junhong Su
- Medical Faculty, Kunming University of Science and Technology, Kunming, People's Republic of China
| | - Dave Sprengers
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Luc J W van der Laan
- Department of Surgery, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Krzysztof Felczak
- Center for Drug Design, University of Minnesota, Minneapolis, Minnesota, USA
| | | | - Kyeong-Ok Chang
- Department of Diagnostic Medicine and Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas, USA
| | - Marion P G Koopmans
- Department of Viroscience, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Herold J Metselaar
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Maikel P Peppelenbosch
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Qiuwei Pan
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
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Dang W. H3K36ME3 PROMOTES LONGEVITY BY SUPPRESSING AGE-ASSOCIATED INTRAGENIC CRYPTIC TRANSCRIPTION. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- W. Dang
- Huffington Center on Aging, Baylor College of Medicine, Houston, Texas
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31
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Yin Y, Dang W, Zhou X, Xu L, Wang W, Cao W, Chen S, Su J, Cai X, Xiao S, Peppelenbosch MP, Pan Q. PI3K-Akt-mTOR axis sustains rotavirus infection via the 4E-BP1 mediated autophagy pathway and represents an antiviral target. Virulence 2017; 9:83-98. [PMID: 28475412 PMCID: PMC5955461 DOI: 10.1080/21505594.2017.1326443] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [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] [Indexed: 12/19/2022] Open
Abstract
Rotavirus infection is a major cause of severe dehydrating diarrhea in infants younger than 5 y old and in particular cases of immunocompromised patients irrespective to the age of the patients. Although vaccines have been developed, antiviral therapy is an important complement that cannot be substituted. Because of the lack of specific approved treatment, it is urgent to facilitate the cascade of further understanding of the infection biology, identification of druggable targets and the final development of effective antiviral therapies. PI3K-Akt-mTOR signaling pathway plays a vital role in regulating the infection course of many viruses. In this study, we have dissected the effects of PI3K-Akt-mTOR signaling pathway on rotavirus infection using both conventional cell culture models and a 3D model of human primary intestinal organoids. We found that PI3K-Akt-mTOR signaling is essential in sustaining rotavirus infection. Thus, blocking the key elements of this pathway, including PI3K, mTOR and 4E-BP1, has resulted in potent anti-rotavirus activity. Importantly, a clinically used mTOR inhibitor, rapamycin, potently inhibited both experimental and patient-derived rotavirus strains. This effect involves 4E-BP1 mediated induction of autophagy, which in turn exerts anti-rotavirus effects. These results revealed new insights on rotavirus-host interactions and provided new avenues for antiviral drug development.
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Affiliation(s)
- Yuebang Yin
- a Department of Gastroenterology and Hepatology , Erasmus MC-University Medical Center , Rotterdam , The Netherlands
| | - Wen Dang
- a Department of Gastroenterology and Hepatology , Erasmus MC-University Medical Center , Rotterdam , The Netherlands
| | - Xinying Zhou
- a Department of Gastroenterology and Hepatology , Erasmus MC-University Medical Center , Rotterdam , The Netherlands
| | - Lei Xu
- a Department of Gastroenterology and Hepatology , Erasmus MC-University Medical Center , Rotterdam , The Netherlands
| | - Wenshi Wang
- a Department of Gastroenterology and Hepatology , Erasmus MC-University Medical Center , Rotterdam , The Netherlands
| | - Wanlu Cao
- a Department of Gastroenterology and Hepatology , Erasmus MC-University Medical Center , Rotterdam , The Netherlands
| | - Sunrui Chen
- a Department of Gastroenterology and Hepatology , Erasmus MC-University Medical Center , Rotterdam , The Netherlands
| | - Junhong Su
- b Medical Faculty, Kunming University of Science and Technology , Kunming , P. R. China
| | - Xuepeng Cai
- c State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences (CAAS) , Lanzhou , P. R. China
| | - Shaobo Xiao
- d State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University , Wuhan , P. R. China
| | - Maikel P Peppelenbosch
- a Department of Gastroenterology and Hepatology , Erasmus MC-University Medical Center , Rotterdam , The Netherlands
| | - Qiuwei Pan
- a Department of Gastroenterology and Hepatology , Erasmus MC-University Medical Center , Rotterdam , The Netherlands
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Su Q, Liu H, Yuan X, Zhang X, Dang W, Zhang J, Qin Y, Men B, Zhao X, Xiao Y, Sun R. Retraction Note to: The Interaction Effects of Temperature and Humidity on Emergency Room Visits for Respiratory Diseases in Beijing, China. Cell Biochem Biophys 2017; 76:327. [PMID: 28526909 DOI: 10.1007/s12013-017-0803-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Q Su
- Emergency Department, The First Affiliated Hospital of General Hospital of PLA, Beijing, People's Republic of China
| | - H Liu
- Emergency Department, The First Affiliated Hospital of General Hospital of PLA, Beijing, People's Republic of China
| | - X Yuan
- Emergency Department, The First Affiliated Hospital of General Hospital of PLA, Beijing, People's Republic of China
| | - X Zhang
- Emergency Department, The First Affiliated Hospital of General Hospital of PLA, Beijing, People's Republic of China
| | - W Dang
- Emergency Department, The First Affiliated Hospital of General Hospital of PLA, Beijing, People's Republic of China
| | - J Zhang
- Emergency Department, The First Affiliated Hospital of General Hospital of PLA, Beijing, People's Republic of China
| | - Y Qin
- Emergency Department, The First Affiliated Hospital of General Hospital of PLA, Beijing, People's Republic of China
| | - B Men
- Emergency Department, The First Affiliated Hospital of General Hospital of PLA, Beijing, People's Republic of China
| | - X Zhao
- Emergency Department, The First Affiliated Hospital of General Hospital of PLA, Beijing, People's Republic of China.
| | - Y Xiao
- Respiratory Department, The First Affiliated Hospital of General Hospital of PLA, Beijing, People's Republic of China
| | - R Sun
- Emergency Department, The General Hospital of PLA, Beijing, People's Republic of China
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Lopez P, Aguilar T, Wu R, Krishnan A, Kong D, Patel J, Javier H, Dang W, Wong D, Zhu D, Dodd J, Shad Y, Humayun M, Hinton D, Clegg D, Johnson L, Lin C, Hsu D, Couture L. 445. cGMP Compliant Production for Human Embryonic Stem Cell Derived Retinal Pigment Epithelial Cells on a Synthetic Substrate for the Treatment of Non-Neovascular Age-Related Macular Degeneration for Phase I Clinical Study. Mol Ther 2016. [DOI: 10.1016/s1525-0016(16)33254-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Wang K, Jia F, Dang W, Zhao Y, Zhu R, Sun M, Qiu S, An X, Ma Z, Zhu Y, Yan J, Kong Z, Yan W, Wang R. Antifungal effect and action mechanism of antimicrobial peptide polybia-CP. J Pept Sci 2015; 22:28-35. [PMID: 26680221 DOI: 10.1002/psc.2835] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 10/10/2015] [Accepted: 10/13/2015] [Indexed: 11/10/2022]
Abstract
The incidence of life-threatening invasive fungal infections increased significantly in recent years. However, the antifungal therapeutic options are very limited. Antimicrobial peptides are a class of potential lead chemical for the development of novel antifungal agents. Antimicrobial peptide polybia-CP was purified from the venom of the social wasp Polybia paulista. In this study, we synthesized polybia-CP and determined its antifungal effects against a series of Candidian species. Our results showed that polybia-CP has potent antifungal activity and fungicidal activity against the tested fungal cells with a proposed membrane-active action mode. In addition, polybia-CP could induce the increase of cellular reactive oxygen species production, which would attribute to its antifungal activity. In conclusion, the present study suggests that polybia-CP has potential as an antifungal agent or may offer a new strategy for antifungal therapeutic option.
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Affiliation(s)
- Kairong Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou, 730000, China
| | - Fengjing Jia
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou, 730000, China
| | - Wen Dang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou, 730000, China
| | - Yanyan Zhao
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou, 730000, China
| | - Ranran Zhu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou, 730000, China
| | - Mengyang Sun
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou, 730000, China
| | - Shuai Qiu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou, 730000, China
| | - Xiaoping An
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou, 730000, China
| | - Zelin Ma
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou, 730000, China
| | - Yuanyuan Zhu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou, 730000, China
| | - Jiexi Yan
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou, 730000, China
| | - Ziqing Kong
- Institute of Food Safety, State Key Laboratory Base of Food Quality and Safety, Ministry of Science and Technology, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Wenjin Yan
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou, 730000, China
| | - Rui Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou, 730000, China
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Yogeswaran N, Dang W, Navaraj W, Shakthivel D, Khan S, Polat E, Gupta S, Heidari H, Kaboli M, Lorenzelli L, Cheng G, Dahiya R. New materials and advances in making electronic skin for interactive robots. Adv Robot 2015. [DOI: 10.1080/01691864.2015.1095653] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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36
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Dang W, Tang H, Cao H, Wang L, Zhang X, Tian W, Pang X, Li K, Chen T. Strategy of STAT3β cell-specific expression in macrophages exhibits antitumor effects on mouse breast cancer. Gene Ther 2015; 22:977-83. [PMID: 26181625 DOI: 10.1038/gt.2015.70] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 04/27/2015] [Accepted: 06/18/2015] [Indexed: 01/05/2023]
Abstract
Recent studies underscore the importance of crosstalk between tumor-associated macrophages (TAMs) and tumor cells in cancer progression and metastasis. In our study, AdCD68STAT3β, a recombinant adenovirus containing a STAT3β gene driven by CD68 macrophage-specific promoter, was used to suppress STAT3 and the downstream signaling pathways in TAMs. The results showed that STAT3β gene under the control of CD68 macrophage-specific promoter was only expressed in macrophages, which significantly inhibited the motility and invasion of breast cancer cells when co-cultured with 4T1 cells. Moreover, cell-specific STAT3β expression in TAMs extended survival of tumor-bearing mice and suppressed breast tumor growth, angiogenesis and metastasis, by regulating the crosstalk between tumor cells and TAMs. Therefore, our study provided a novel strategy for the antitumor effects of STAT3β.
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Affiliation(s)
- W Dang
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China
| | - H Tang
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China
| | - H Cao
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China
| | - L Wang
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China
| | - X Zhang
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China
| | - W Tian
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China
| | - X Pang
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China
| | - K Li
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China
| | - T Chen
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China
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Wang K, Dang W, Xie J, Zhu R, Sun M, Jia F, Zhao Y, An X, Qiu S, Li X, Ma Z, Yan W, Wang R. Antimicrobial peptide protonectin disturbs the membrane integrity and induces ROS production in yeast cells. Biochimica et Biophysica Acta (BBA) - Biomembranes 2015. [DOI: 10.1016/j.bbamem.2015.07.008] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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38
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Yin Y, Bijvelds M, Dang W, Xu L, van der Eijk AA, Knipping K, Tuysuz N, Dekkers JF, Wang Y, de Jonge J, Sprengers D, van der Laan LJW, Beekman JM, Ten Berge D, Metselaar HJ, de Jonge H, Koopmans MPG, Peppelenbosch MP, Pan Q. Modeling rotavirus infection and antiviral therapy using primary intestinal organoids. Antiviral Res 2015; 123:120-31. [PMID: 26408355 DOI: 10.1016/j.antiviral.2015.09.010] [Citation(s) in RCA: 127] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 09/18/2015] [Accepted: 09/19/2015] [Indexed: 01/06/2023]
Abstract
Despite the introduction of oral vaccines, rotavirus still kills over 450,000 children under five years of age annually. The absence of specific treatment prompts research aiming at further understanding of pathogenesis and the development of effective antiviral therapy, which in turn requires advanced experimental models. Given the intrinsic limitations of the classical rotavirus models using immortalized cell lines infected with laboratory-adapted strains in two dimensional cultures, our study aimed to model infection and antiviral therapy of both experimental and patient-derived rotavirus strains using three dimensional cultures of primary intestinal organoids. Intestinal epithelial organoids were successfully cultured from mouse or human gut tissues. These organoids recapitulate essential features of the in vivo tissue architecture, and are susceptible to rotavirus. Human organoids are more permissive to rotavirus infection, displaying an over 10,000-fold increase in genomic RNA following 24h of viral replication. Furthermore, infected organoids are capable of producing infectious rotavirus particles. Treatment of interferon-alpha or ribavirin inhibited viral replication in organoids of both species. Importantly, human organoids efficiently support the infection of patient-derived rotavirus strains and can be potentially harnessed for personalized evaluation of the efficacy of antiviral medications. Therefore, organoids provide a robust model system for studying rotavirus-host interactions and assessing antiviral medications.
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Affiliation(s)
- Yuebang Yin
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Marcel Bijvelds
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Wen Dang
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Lei Xu
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | | | | | - Nesrin Tuysuz
- Department of Cell Biology, Erasmus MC Stem Cell Institute, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Johanna F Dekkers
- Department of Pediatric Pulmonology/Laboratory of Translational Immunology, Wilhelmina Children's Hospital, University Medical Centre, Utrecht, The Netherlands
| | - Yijin Wang
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Jeroen de Jonge
- Department of Surgery, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Dave Sprengers
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Luc J W van der Laan
- Department of Surgery, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Jeffrey M Beekman
- Department of Pediatric Pulmonology/Laboratory of Translational Immunology, Wilhelmina Children's Hospital, University Medical Centre, Utrecht, The Netherlands
| | - Derk Ten Berge
- Department of Cell Biology, Erasmus MC Stem Cell Institute, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Herold J Metselaar
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Hugo de Jonge
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Marion P G Koopmans
- Department of Viroscience, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Maikel P Peppelenbosch
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
| | - Qiuwei Pan
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, Rotterdam, The Netherlands.
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Zhang R, Wang F, Kang J, Wang X, Yin D, Dang W, Duan J. Prevalence of multidrug resistant Gram-positive cocci in a Chinese hospital over an 8-year period. Int J Clin Exp Med 2015; 8:9462-9469. [PMID: 26309609 PMCID: PMC4538018] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Accepted: 05/26/2015] [Indexed: 06/04/2023]
Abstract
Gram-positive cocci are common causes of bloodstream and nosocomial infections, and their multi-drug resistance is an increasingly serious problem. The present study aimed to assess the prevalence of multi-drug-resistant Gram-positive cocci in a Chinese population. In this retrospective study, data about Gram-positive cocci from in-patients (January 2006 and December 2013) at the Second Hospital of Shanxi Medical University, Taiyuan, China, were reviewed. Antimicrobial susceptibility profile of the isolated Gram-positive cocci was evaluated using the disk diffusion method. Antibiotic resistance was determined according to the Clinical and Laboratory Standards Institute 2009 guidelines. The prevalence of drug resistance was determined, as well as correlation coefficients for various drugs between the resistance rate and year of sample collection. A total of 7789 Gram-positive cocci isolates were found, including 2576 (33%) coagulase-negative Staphylococci, 1477 (19%) Staphylococci aureus, 1343 (17%) Enterococcus faecalis, and 1139 (15%) Enterococcus faecium. The proportions of methicillin-resistant Staphylococci aureus (MRSA) and methicillin-resistant Staphylococci (MRS) were 31.5% (465/1477) and 61.6% (1587/2576), respectively. Among all isolates, MRS had much higher drug resistance rate than methicillin-sensitive Staphylococci (P<0.05). E. faecalis had a higher multi-drug resistance rate than E. faecium (P<0.01). Interestingly, MRSA resistance rates declined over the years, showing a negative correlation coefficient for all drugs, with significance for levofloxacin, azithromycin, erythromycin, and clindamycin (P<0.05), but not sulphamethoxazole/trimethoprim (P=0.057) and gentamicin (P=0.186). These results indicated that Staphylococci were the predominant Gram-positive cocci isolated. There was a trend of decreasing MRSA in the population studied.
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Affiliation(s)
- Ruiqin Zhang
- Department of Pharmacy, The Second Hospital of Shanxi Medical UniversityTaiyuan 030000, Shanxi Province, China
| | - Fengzhi Wang
- Department of Medicine, The Second Hospital of Shanxi Medical UniversityTaiyuan 030000, Shanxi Province, China
| | - Jianbang Kang
- Department of Pharmacy, The Second Hospital of Shanxi Medical UniversityTaiyuan 030000, Shanxi Province, China
| | - Xinchun Wang
- Department of Pharmacy, The Second Hospital of Shanxi Medical UniversityTaiyuan 030000, Shanxi Province, China
| | - Donghong Yin
- Department of Pharmacy, The Second Hospital of Shanxi Medical UniversityTaiyuan 030000, Shanxi Province, China
| | - Wen Dang
- Department of Pharmacy, The Second Hospital of Shanxi Medical UniversityTaiyuan 030000, Shanxi Province, China
| | - Jinju Duan
- Department of Pharmacy, The Second Hospital of Shanxi Medical UniversityTaiyuan 030000, Shanxi Province, China
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40
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Wang K, Yan J, Dang W, Xie J, Yan B, Yan W, Sun M, Zhang B, Ma M, Zhao Y, Jia F, Zhu R, Chen W, Wang R. Dual antifungal properties of cationic antimicrobial peptides polybia-MPI: membrane integrity disruption and inhibition of biofilm formation. Peptides 2014; 56:22-9. [PMID: 24642357 DOI: 10.1016/j.peptides.2014.03.005] [Citation(s) in RCA: 40] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Revised: 03/06/2014] [Accepted: 03/09/2014] [Indexed: 12/14/2022]
Abstract
With the increasing emergence of resistant fungi, the discovery and development of novel antifungal therapeutics were urgently needed. Compared with conventional antibiotics, the limited propensity of AMPs to induce resistance in pathogens has attracted great interest. In the present study, the antifungal activity and its mechanism-of-action of polybia-MPI, a cationic peptide from the venom of Social wasp Polybia Paulista was investigated. We demonstrated that polybia-MPI could potently inhibit the growth of Candida albicans (C. albicans) and Candida glabrata (C. glabrata). The 50% inhibitory concentrations (IC50) of Polybia-MPI against cancer cells were much higher than the MICs against the tested C. albicans and C. glabrata cells, indicating that polybia-MPI had high selectivity between the fungal and mammalian cells. Our results also indicated that membrane disturbance mechanism was involved in the antifungal activity. Furthermore, polybia-MPI could inhibit the bio film forming of C. glabrata, which was frequently associated with clinically significant biofilm. These results suggest that polybia-MPI has great advantages in the development of antifungal agents.
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Affiliation(s)
- Kairong Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou 730000, PR China
| | - Jiexi Yan
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou 730000, PR China
| | - Wen Dang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou 730000, PR China
| | - Junqiu Xie
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou 730000, PR China
| | - Bo Yan
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou 730000, PR China
| | - Wenjin Yan
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou 730000, PR China
| | - Mengyang Sun
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou 730000, PR China
| | - Bangzhi Zhang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou 730000, PR China
| | - Mingxia Ma
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou 730000, PR China
| | - Yanyan Zhao
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou 730000, PR China
| | - Fengjing Jia
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou 730000, PR China
| | - Ranran Zhu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou 730000, PR China
| | - Wei Chen
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou 730000, PR China
| | - Rui Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, 222 Tian Shui South Road, Lanzhou 730000, PR China.
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Wang K, Dang W, Yan J, Chen R, Liu X, Yan W, Zhang B, Xie J, Zhang J, Wang R. Membrane perturbation action mode and structure-activity relationships of Protonectin, a novel antimicrobial peptide from the venom of the neotropical social wasp Agelaia pallipes pallipes. Antimicrob Agents Chemother 2013; 57:4632-9. [PMID: 23836163 PMCID: PMC3811433 DOI: 10.1128/aac.02311-12] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2012] [Accepted: 06/20/2013] [Indexed: 01/12/2023] Open
Abstract
With the extensive use of antibiotics, multidrug-resistant bacteria emerge frequently. New antimicrobial agents with novel modes of action are urgently needed. It is now widely accepted that antimicrobial peptides (AMPs) could be promising alternatives to conventional antibiotics. In this study, we aimed to study the antimicrobial activity and mechanism of action of protonectin, a cationic peptide from the venom of the neotropical social wasp Agelaia pallipes pallipes. We demonstrated that protonectin exhibits potent antimicrobial activity against a spectrum of bacteria, including multidrug-resistant strains. To further understand this mechanism, the structural features of protonectin and its analogs were studied by circular dichroism (CD). The CD spectra demonstrated that protonectin and its natural analog polybia-CP formed a typical α-helical conformation in the membrane-mimicking environment, while its proline-substituted analog had much lower or even no α-helix conformation. Molecular dynamics simulations indicated that the α-helical conformation in the membrane is required for the exhibition of antibacterial activity. In conclusion, protonectin exhibits potent antimicrobial activity by disruption of the integrity of the bacterial membrane, and its α-helical confirmation in the membrane is essential for this action.
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Affiliation(s)
- Kairong Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, People's Republic of China
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Wang K, Yan J, Dang W, Liu X, Chen R, Zhang J, Zhang B, Zhang W, Kai M, Yan W, Yang Z, Xie J, Wang R. Membrane active antimicrobial activity and molecular dynamics study of a novel cationic antimicrobial peptide polybia-MPI, from the venom of Polybia paulista. Peptides 2013; 39:80-8. [PMID: 23159560 DOI: 10.1016/j.peptides.2012.11.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Revised: 11/02/2012] [Accepted: 11/02/2012] [Indexed: 01/18/2023]
Abstract
As the frequent emergence of the resistant bacteria, the development of new agents with a new action mode attracts a great deal of interest. It is now widely accepted that antimicrobial peptides (AMPs) are promising alternatives to conventional antibiotics. In this study, antimicrobial peptide polybia-MPI and its analogs were synthesized and their antibacterial activity was studied. Our results revealed that polybia-MPI has potent antibacterial activity against both Gram-positive and Gram-negative bacteria. Its ability to make PI permeate into bacteria and lead to the leakage of calcein from model membrane LUVs, suggests a killing mechanism involving membrane perturbation. SEM and TEM microscopy experiments verified that the morphology of bacteria was changed greatly under the treatment of polybia-MPI. Compared with the conventional chemotherapy, polybia-MPI targets the cell membrane rather than entering into the cell to exert its antibacterial activity. Furthermore, molecular dynamics (MD) simulations were employed to investigate the mechanism of membrane perturbation. The results indicated that the α-helical conformation in the membrane is required for the exhibition of antibacterial activity and the membrane disturbance by polybia-MPI is a cooperative process. In conclusion, with the increasing resistance to conventional antibiotics, there is no doubt that polybia-MPI could offer a new strategy to defend the resistant bacteria.
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Affiliation(s)
- Kairong Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, PR China.
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Wang K, Yan J, Liu X, Zhang J, Chen R, Zhang B, Dang W, Zhang W, Kai M, Song J, Wang R. Novel cytotoxity exhibition mode of polybia-CP, a novel antimicrobial peptide from the venom of the social wasp Polybia paulista. Toxicology 2011; 288:27-33. [DOI: 10.1016/j.tox.2011.06.014] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2011] [Revised: 06/22/2011] [Accepted: 06/24/2011] [Indexed: 01/19/2023]
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Su N, Zhang L, Fei F, Hu H, Wang K, Hui H, Jiang XF, Li X, Zhen HN, Li J, Cao BP, Dang W, Qu Y, Zhou F. The brain-derived neurotrophic factor is associated with alcohol dependence-related depression and antidepressant response. Brain Res 2011; 1415:119-26. [PMID: 21880305 DOI: 10.1016/j.brainres.2011.08.005] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2011] [Revised: 07/14/2011] [Accepted: 08/03/2011] [Indexed: 11/30/2022]
Abstract
Brain-derived neurotrophic factor (BDNF) plays an essential role in neuronal survival, proliferation, and synaptic remodeling and modulates the function of many other neurotransmitters. Additionally, it likely underlies neurodegenerative and psychiatric disorders, including alcohol dependence-related depression (AD-D). Here, we investigated the possible association between three single nucleotide polymorphisms (SNPs) of the BDNF gene (rs13306221, rs6265, rs16917204) and AD-D. Of 548 patients with alcohol dependence (AD), 166 had AD-D and 312 healthy controls. Response to 8-week sertraline treatment was also assessed. The frequency of the A allele of rs6265 (Val66Met) was significantly higher in AD-D patients than in the healthy controls (p=0.009 after Bonferroni correction). The analysis revealed a strong association between the rs6265 genotype distribution and AD-D (p=0.005 after Bonferroni correction), and the A allele of rs6265 was significantly overrepresented in AD-D patients compared to AD without depression (AD-nD) patients (p=0.001 after Bonferroni correction). Additionally, carriers of the A allele of rs6265 responded better to sertraline treatment (p=0.001). Our results suggested a novel association between BDNF rs6265 and AD-D. These findings might lead to earlier detection of AD-D, perhaps providing better tools for clinical care of these patients in the future.
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Affiliation(s)
- N Su
- Department of Neurosurgery, Xi Jing Hospital, Fourth Military Medical University, Xi'an, Shannxi, PR China.
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Ausubel LJ, Meseck M, Derecho I, Lopez P, Knoblauch C, McMahon R, Anderson J, Dunphy N, Quezada V, Khan R, Huang P, Dang W, Luo M, Hsu D, Woo SLC, Couture L. Current good manufacturing practice production of an oncolytic recombinant vesicular stomatitis viral vector for cancer treatment. Hum Gene Ther 2011; 22:489-97. [PMID: 21083425 DOI: 10.1089/hum.2010.159] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Vesicular stomatitis virus (VSV) is an oncolytic virus currently being investigated as a promising tool to treat cancer because of its ability to selectively replicate in cancer cells. To enhance the oncolytic property of the nonpathologic laboratory strain of VSV, we generated a recombinant vector [rVSV(MΔ51)-M3] expressing murine gammaherpesvirus M3, a secreted viral chemokine-binding protein that binds to a broad range of mammalian chemokines with high affinity. As previously reported, when rVSV(MΔ51)-M3 was used in an orthotopic model of hepatocellular carcinoma (HCC) in rats, it suppressed inflammatory cell migration to the virus-infected tumor site, which allowed for enhanced intratumoral virus replication leading to increased tumor necrosis and substantially prolonged survival. These encouraging results led to the development of this vector for clinical translation in patients with HCC. However, a scalable current Good Manufacturing Practice (cGMP)-compliant manufacturing process has not been described for this vector. To produce the quantities of high-titer virus required for clinical trials, a process that is amenable to GMP manufacturing and scale-up was developed. We describe here a large-scale (50-liter) vector production process capable of achieving crude titers on the order of 10(9) plaque-forming units (PFU)/ml under cGMP. This process was used to generate a master virus seed stock and a clinical lot of the clinical trial agent under cGMP with an infectious viral titer of approximately 2 × 10(10) PFU/ml (total yield, 1 × 10(13) PFU). The lot has passed all U.S. Food and Drug Administration-mandated release testing and will be used in a phase 1 clinical translational trial in patients with advanced HCC.
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Affiliation(s)
- L J Ausubel
- Center for Biomedicine and Genetics, and Center for Applied Technology Development, Beckman Research Institute of City of Hope, Duarte, CA 91010, USA.
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Abstract
AIM To investigate the effect of copper on the virulence of Edwardsiella tarda. METHODS AND RESULTS The pathogenic Edw. tarda strain TX5 was cultured under copper-stressed conditions and examined for any potential alteration in capacities that are associated with pathogenicity. The results showed that compared to untreated TX5, Cu-treated TX5 exhibits reduced planktonic and biofilm growth, an impaired ability to adhere to host mucus, modulation of host immune response, and dissemination in host blood and liver. Consistent with these observations, the overall bacterial virulence of Cu-treated TX5 is significantly attenuated. SDS-PAGE analyses of whole cell protein production showed that Cu-treated TX5 differs from the untreated TX5 in its production of at least one protein. Quantitative real time reverse transcriptase PCR analyses showed that copper treatment decreased the expression of virulence-associated genes encoding components of the type III and type VI secretion systems, the Eth haemolysin system, and the LuxS/AI-2 quorum-sensing system. CONCLUSIONS Prolonged exposure to copper has multiple effects on TX5 and results in significant attenuation of bacterial virulence. SIGNIFICANCE AND IMPACT OF THE STUDY The results of this study demonstrate that copper treatment has a broad and profound effect on the virulence-associated capacities of TX5, which is exerted at least in part at the transcription level. These findings provide new insights to the antimicrobial mechanism of copper.
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Affiliation(s)
- Y-H Hu
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
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Zhukovsky E, Chu S, Bernett M, Karki S, Dang W, Hammond P, Edler C, Polder N, Chan C, Jacinto J, Desjarlais J. XmAb Fc engineered anti-CD19 monoclonal antibodies with enhanced in vitro efficacy against multiple lymphoma cell lines. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.3021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
3021 Background: CD19 is a pan-B cell surface receptor that is expressed from early stages of pre-B cell development through terminal differentiation into plasma cells. It is an attractive immunotherapy target for cancers of lymphoid origin since it is also expressed on the vast majority of Non-Hodgkin Lymphoma (NHL) cells as well as some leukemias. Despite major improvements in response rates and progression free survival the majority of NHL patients will relapse under the current combination chemotherapy with anti-CD20. Thus salvage regimens with new non-cross resistant antibody therapies are warranted. Methods: We employ our XmAb antibody engineering technology to increase the affinity of IgG antibodies for Fc gamma receptors (FcγR), improve the effector function of antibodies, and significantly increases their antitumor potency; we also we humanize and affinity mature such antibodies. Results: The XmAb technology was applied to a humanized anti-CD19 antibody to engineer a variant with significantly enhanced (10- to 100-fold) antibody-dependent cell-mediated cytotoxicity (ADCC). The resulting XmAb CD19 variant was assayed for ADCC against multiple cell lines representative of follicular lymphoma (FL), chronic lymphocytic leukemia (CLL), B-cell acute lymphoblastic leukemia (B-ALL), mantle cell lymphoma (MCL), hairy cell leukemia (HCL), chronic myelogenous leukemia (CML), and Burkitt’s lymphoma (BL). The ADCC activity of the XmAb CD19 was in striking contrast to a wild type IgG1 version of the antibody that mediates little ADCC. Moreover, ADCC potency and efficacy of the anti-CD19 Fc variant antibody were superior to that of rituximab: CLL - 10- and 1.5-fold higher, ALL - 10- and 100-fold higher, and HCL - 6- and 1.2-fold higher, respectively. Further, we observed no correlation between ADCC and antigen expression based on the measured cell surface density of CD19 for these cell lines. Conclusions: The increased affinity for FcγRs exhibited by the anti-CD19 Fc variant antibody overcomes much of the dependence of cytotoxicity on surface antigen density. Our data suggest that the anti-CD19 Fc variant antibody engineered for increased effector function could be a promising next-generation NHL immunotherapeutic. No significant financial relationships to disclose.
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Vafa O, Kharki S, Vielmetter J, Chamberlain A, Hammond P, Dang W, Carmichael D, Kunkel L, Barbosa M, Desjarlais J. Anti-EpCAM XmAb antibodies with improved cytotoxicity. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.12506] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
12506 Background: The epithelial cell adhesion molecule (EpCAM), also known as epithelial protein 2 (EGP-2) or 17–1A antigen, is a trans-membrane protein expressed on the surfaces of most carcinomas, including those of pancreatic, colorectal, prostate, breast, kidney, lung, and ovarian origins. Moderate affinity antibodies (Abs) such as 17–1A (Kd ∼ 10−7 nM) have been safe in humans albeit with limited clinical efficacy. Attempts to improve clinical efficacy by enhancing antigen affinity (Kd ∼ 10−9 nM) have led to serious clinical toxicity, including pancreatitis. These observations raise the question of whether a moderate affinity Ab with enhanced effector function will be both safe and clinically efficacious. Methods: We applied our proprietary XmAb™ technologies to humanize the 17–1A variable domain and engineer a human IgG1 Fc domain to increase affinity for the activating receptor FcγRIIIa. Ab binding to Ep-CAM or to Fc receptors was tested with Biacore and/or AlphaScreen binding assays. In vitro cytotoxic activity against representative cancer cell lines was measured with Antibody Dependent Cell-mediated Cytotoxicity (ADCC) assays, using human PBMC as effector cells. Results: Humanized anti-EpCAM Abs have affinity for EpCAM similar to the parent 17–1A. Affinity for the activating FcγRIIIa was increased 100-fold relative to a control Ab with an IgG1 Fc domain. As expected, these Abs exhibit dramatically enhanced ADCC against multiple cancer cell lines relative to 17–1A and IgG1 control Abs. Despite their moderate affinity for EpCAM, these novel Abs have in vitro cytotoxicity comparable to the high affinity Ab ING-1. CDC activities of these Abs were similar to chimeric 17–1A. Conclusions: We have demonstrated that antibodies with moderate affinity for EpCAM and increased FcγRIIIa affinity exhibit superior cancer cell killing via an ADCC mechanism. The humanized nature and the increased cytotoxicity of anti-EpCAM XmAb™ antibodies make them promising candidates for clinical development of a novel pan-carcinoma Ab that is superior to 17–1A. [Table: see text]
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Carmichael DF, Desjarlais JR, Lazar GA, Dang W, Vafa O, Vielmetter J, Karki S, Dahiyat B. Engineering antibodies to enhance efector functions. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.2551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Affiliation(s)
- B S Nikolajczyk
- Rosenstiel Research Center and Department of Biology, Brandeis University, Waltham, Massachusetts 02454
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