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Jiang D, An X, Xu Q, Mo G, Ling W, Ji C, Wang Z, Wang X, Sun Q, Kang B. Effects of ferritin heavy chain on oxidative stress, cell proliferation and apoptosis in geese follicular granulosa cells. Br Poult Sci 2024:1-10. [PMID: 38456722 DOI: 10.1080/00071668.2024.2315086] [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: 10/22/2023] [Accepted: 12/02/2023] [Indexed: 03/09/2024]
Abstract
1. The ferritin heavy chain (FHC) has a vital impact on follicular development in geese, due to its ability to regulate apoptosis of granulosa cells (GCs) and follicular atresia. However, its specific regulatory mechanisms remain unclear. The present study characterised how FHC regulates oxidative stress, cell proliferation and apoptosis in goose GCs by interfering with and overexpressing the FHC gene.2. After 72 h of interference with FHC expression, the activity of GCs decreased remarkably (p < 0.05), reactive oxygen species (ROS) levels and the expression levels of antioxidant enzyme genes catalase (CAT), superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) increased significantly (p < 0.05). The overexpression of FHC for 72 h was found to significantly reduce the expression of CAT and SOD genes (p < 0.05).3. Interfering with FHC expression revealed that the expression levels of the cell proliferation gene Aurora kinase A (AURORA-A) were significantly decreased (p < 0.05), while the expression levels of the apoptosis genes B-cell lymphoma-2 (BCL-2) and cysteine aspartate-specific protease 8 (CASPASE 8) increased (p < 0.05). Further research has shown that, when interfering with FHC expression for 72 h, apoptosis rate increased by 1.19-fold (p < 0.05), but the current data showed a lower apoptosis rate after FHC overexpression by 59.41%, 63.39%, and 52.31% at three different treatment times (p < 0.05).4. In conclusion, FHC improved the antioxidant capacity of GCs, promotes GCs proliferation, and inhibits GCs apoptosis of ovarian follicles in Sichuan white geese.
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Affiliation(s)
- D Jiang
- State Key Laboratory of Swine and Poultry Breeding Industry,College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P. R. China
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P. R. China
| | - X An
- State Key Laboratory of Swine and Poultry Breeding Industry,College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P. R. China
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P. R. China
| | - Q Xu
- State Key Laboratory of Swine and Poultry Breeding Industry,College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P. R. China
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P. R. China
| | - G Mo
- State Key Laboratory of Swine and Poultry Breeding Industry,College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P. R. China
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P. R. China
| | - W Ling
- State Key Laboratory of Swine and Poultry Breeding Industry,College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P. R. China
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P. R. China
| | - C Ji
- State Key Laboratory of Swine and Poultry Breeding Industry,College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P. R. China
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P. R. China
| | - Z Wang
- State Key Laboratory of Swine and Poultry Breeding Industry,College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P. R. China
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P. R. China
| | - X Wang
- State Key Laboratory of Swine and Poultry Breeding Industry,College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P. R. China
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P. R. China
| | - Q Sun
- State Key Laboratory of Swine and Poultry Breeding Industry,College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P. R. China
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P. R. China
| | - B Kang
- State Key Laboratory of Swine and Poultry Breeding Industry,College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P. R. China
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P. R. China
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Li Q, Lin L, Shou P, Liu K, Xue Y, Hu M, Ling W, Huang Y, Du L, Zheng C, Wang X, Zheng F, Zhang T, Wang Y, Shao C, Melino G, Shi Y, Wang Y. MHC class Ib-restricted CD8 + T cells possess strong tumoricidal activities. Proc Natl Acad Sci U S A 2023; 120:e2304689120. [PMID: 37856544 PMCID: PMC10614629 DOI: 10.1073/pnas.2304689120] [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: 03/22/2023] [Accepted: 08/28/2023] [Indexed: 10/21/2023] Open
Abstract
The importance of classical CD8+ T cells in tumor eradication is well acknowledged. However, the anti-tumor activity of MHC (major histocompatibility complex) Ib-restricted CD8+ T (Ib-CD8+ T) cells remains obscure. Here, we show that CX3CR1-expressing Ib-CD8+ T cells (Ib-restricted CD8+ T cells) highly express cytotoxic factors, austerely resist exhaustion, and effectively eliminate various tumors. These Ib-CD8+ T cells can be primed by MHC Ia (MHC class Ia molecules) expressed on various cell types for optimal activation in a Tbet-dependent manner. Importantly, MHC Ia does not allogeneically activate Ib-CD8+ T cells, rather, sensitizes these cells for T cell receptor activation. Such effects were observed when MHC Ia+ cells were administered to tumor-bearing Kb-/-Db-/-mice. A similar population of tumoricidal CX3CR1+CD8+ T cells was identified in wild-type mice and melanoma patients. Adoptive transfer of Ib-CD8+ T cells to wild-type mice inhibited tumor progression without damaging normal tissues. Taken together, we demonstrate that MHC class Ia can prime Ib-CD8+ T cells for robust tumoricidal activities.
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Affiliation(s)
- Qing Li
- Chinese Academy of Sciences Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai200031, China
| | - Liangyu Lin
- Chinese Academy of Sciences Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai200031, China
| | - Peishun Shou
- Chinese Academy of Sciences Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai200031, China
| | - Keli Liu
- Chinese Academy of Sciences Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai200031, China
| | - Yueqing Xue
- Chinese Academy of Sciences Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai200031, China
| | - Mingyuan Hu
- Chinese Academy of Sciences Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai200031, China
| | - Weifang Ling
- Chinese Academy of Sciences Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai200031, China
| | - Yin Huang
- Chinese Academy of Sciences Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai200031, China
| | - Liming Du
- Chinese Academy of Sciences Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai200031, China
| | - Chunxing Zheng
- Chinese Academy of Sciences Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai200031, China
| | - Xuefeng Wang
- Chinese Academy of Sciences Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai200031, China
| | - Fanjun Zheng
- Chinese Academy of Sciences Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai200031, China
| | - Tao Zhang
- Chinese Academy of Sciences Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai200031, China
| | - Yu Wang
- Chinese Academy of Sciences Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai200031, China
| | - Changshun Shao
- The Third Affiliated Hospital of Soochow University, State Key Laboratory of Radiation Medicine and Protection, Institutes for Translational Medicine, Soochow University, Suzhou, Jiangsu215123, China
| | - Gerry Melino
- Department of Experimental Medicine, Tor Vergata Oncoscience Research, University of Rome Tor Vergata, Rome00133, Italy
| | - Yufang Shi
- Chinese Academy of Sciences Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai200031, China
- The Third Affiliated Hospital of Soochow University, State Key Laboratory of Radiation Medicine and Protection, Institutes for Translational Medicine, Soochow University, Suzhou, Jiangsu215123, China
| | - Ying Wang
- Chinese Academy of Sciences Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai200031, China
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Ji X, Tao R, Sun LY, Xu XL, Ling W. Down-regulation of long non-coding RNA DUXAP8 suppresses proliferation, metastasis and EMT by modulating miR-498 through TRIM44-mediated AKT/mTOR pathway in non-small-cell lung cancer. Eur Rev Med Pharmacol Sci 2021; 24:3152-3165. [PMID: 32271433 DOI: 10.26355/eurrev_202003_20682] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The long non-coding RNA double homeobox A pseudogene 8 (DUXAP8) was reported to be involved in the initiation and development of multiple cancers. However, the detailed biological role of DUXAP8 in non-small-cell lung cancer (NSCLC) remains unclear. Herein, we aimed to explore the biological function and molecular mechanism of DUXAP8 in NSCLC. PATIENTS AND METHODS The levels of DUXAP8, microRNA-498 (miR-498) and tripartite motif-44 (TRIM44) were detected by Quantitative Real-time polymerase chain reaction (qRT-PCR). The cell proliferation, migration and invasion were detected by 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and transwell assays. Protein expression levels were detected by Western blot. The target relationships among DUXAP8, miR-498 and TRIM44 were predicted by starBase2.0 and confirmed using luciferase reporter and RNA pull-down assays. To detect the role of DUXAP8 in vivo, tumor xenografts were created. RESULTS DUXAP8 and TRIM44 were upregulated in NSCLC tissues and cell lines, while miR-498 was downregulated. Functionally, knockdown of DUXAP8 could repress proliferation, migration, invasion, Epithelial-Mesenchymal Transition (EMT) and phosphorylation of AKT/mTOR in NSCLC cells. This inhibition could be restored by inhibiting miR-498 or overexpressing TRIM44. Furthermore, we also observed a positive correlation between DUXAP8 and TRIM44 expression, while the expressions of miR-498 and DUXAP8, as well as miR-498 and TRIM44, were negatively correlated in NSCLC tissues. Importantly, DUXAP8 could regulate the expression of TRIM44 via miR-498. Moreover, knockdown of DUXAP8 notably decreased the xenograft tumor volume, weight and number of metastatic nodules in vivo. CONCLUSIONS Our results identified that LncRNA DUXAP8 could regulate cell proliferation, metastasis and EMT in NSCLC cells by inhibiting miR-498 through the activation of TRIM44-mediated AKT/mTOR pathway.
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Affiliation(s)
- X Ji
- Department of Respiratory and Critical Care Medicine, Lin Yi People's Hospital, Lin Yi, Shandong, China.
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Karasiewicz K, He S, Tess K, Ling W, Jhun K, Kaufmann G, Zeldis JB, Ji H, Hariri R, Zhang X. Abstract 2188: Generation and characterization of human placental-derived CD19 CAR-T cells using viral vectors. Cancer Res 2020. [DOI: 10.1158/1538-7445.am2020-2188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction: Celularity, Inc. is developing a CD19 CAR-T cell therapy using an allogeneic platform derived from postpartum human placental cells. To augment the CD19 CAR expression and activity of Placental-derived T (P-T) cells, we have evaluated the use of various lentiviral (LV) vectors, as well as a retroviral (RV) CD19 CAR construct and assessed the effects of each virus on the phenotypic characteristics and activity of our cells. Fully humanized scFv CD19 constructs have been shown to be less immunogenic with improved persistence and efficacy in patients (Sommermeyer, et. al. Leukemia, 2017), so human (Hu) vs. mouse (Ms) scFv CD19 CAR constructs were also evaluated.
Experimental Procedures: Isolated P-T cells were activated and transduced with various Ms and Hu scFv CD19 CAR viral vectors, including two Ms scFv LV sequences (containing 4-1BB costimulatory domains), three different Hu scFv LV sequences (two containing 4-1BB and one containing CD28 costimulatory domains), and one Ms scFv RV sequence (containing 4-1BB costimulatory domain). In vitro functional activity of these P-T CD19 CAR cells was assessed against CD19+ Burkitt's Lymphoma (Daudi) and Acute lymphoblastic Leukemia (NALM6) cell lines in cytotoxicity assays. In vivo anti-tumor activity of P-T Ms scFv CD19 CAR LV vs. RV cells was assessed using a disseminated lymphoma xenograft model in NSG mice.
Results: All CD19 CAR constructs containing the 4-1BB costimulatory domain resulted in high transduction efficiency in P-T cells: Ms LV: 32-70% (n=4); Hu LV: 26-42% (n=2); Ms RV: 22-52% (n=6). P-T cells transduced with LV resulted in lower frequency of CD8+ T cells (9-42%), as compared to cells transduced with RV (46-59%), and consequently had lower CD8+ CD19 CAR+ (of CD3+) expression (LV: 2.8-6.4%; RV: 14-30%). In vitro, all CD19 CAR constructs specifically lysed CD19+ Daudi/ Nalm6 targets in cytotoxicity assays. In vivo, both P-T Ms scFv CD19 CAR LV and RV cells significantly reduced tumor burden and improved survival over the vehicle control. P-T CD19 CAR RV cells demonstrated superior anti-tumor activity over P-T CD19 CAR LV with 100% survival out to day 120, while the CD19 CAR LV treated group succumbed to 100% mortality by day 70.
Summary: We have demonstrated the ability to generate P-T CD19 CAR cells using a variety of viral vectors containing the 4-1BB costimulatory domain. Transduction of P-T cells using Hu vs. Ms scFv CD19 CAR sequences resulted in comparable CD19 CAR expression and in vitro cytotoxic activity, whereas use of LV vs. RV had an impact on the phenotypic characteristic of the cells and resulted in differences in the in vivo tumor activity of the cells.
Citation Format: Kathy Karasiewicz, Shuyang He, Kristina Tess, Weifang Ling, Kevin Jhun, Gunnar Kaufmann, Jerome B. Zeldis, Henry Ji, Robert Hariri, Xiaokui Zhang. Generation and characterization of human placental-derived CD19 CAR-T cells using viral vectors [abstract]. In: Proceedings of the Annual Meeting of the American Association for Cancer Research 2020; 2020 Apr 27-28 and Jun 22-24. Philadelphia (PA): AACR; Cancer Res 2020;80(16 Suppl):Abstract nr 2188.
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Affiliation(s)
| | | | | | | | | | | | | | - Henry Ji
- 2Sorrento Therapeutics, Inc, San Diego, CA
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Wang X, Chen X, Zhang H, Pang J, Lin J, Xu X, Yang L, Ma J, Ling W, Chen Y. Circulating retinol-binding protein 4 is associated with the development and regression of non-alcoholic fatty liver disease. Diabetes & Metabolism 2020; 46:119-128. [DOI: 10.1016/j.diabet.2019.04.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 04/28/2019] [Accepted: 04/28/2019] [Indexed: 02/07/2023]
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Li Q, Chen Q, Zhang H, Xu Z, Wang X, Pang J, Ma J, Ling W, Li D. Associations of serum magnesium levels and calcium-magnesium ratios with mortality in patients with coronary artery disease. Diabetes Metab 2019; 46:384-391. [PMID: 31870835 DOI: 10.1016/j.diabet.2019.12.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 12/05/2019] [Accepted: 12/10/2019] [Indexed: 11/26/2022]
Abstract
AIMS Low magnesium (Mg) and high calcium (Ca) levels are linked to increased cardiovascular disease (CVD) risk in the general population. This prospective study assessed whether there are any independent associations of serum Mg levels and Ca-Mg ratios with mortality in patients with coronary artery disease (CAD). METHODS This prospective cohort study included 3380 CAD patients. Cox regression models were used to estimate associations of serum Mg and Ca-Mg ratio with risk of mortality. RESULTS A total of 562 deaths (331 due to CVD) were recorded during a 7.59-year (median) follow-up. Spline plots displayed U-shaped associations between serum Mg levels and Ca-Mg ratios and risk of mortality. When compared with a moderate group, adjusted hazard ratios (95% confidence intervals) for low Mg levels and high Ca-Mg ratios were 1.59 (1.30-1.95) and 1.31 (1.06-1.61) for all-cause mortality, and 1.71 (1.32-2.22) and 1.44 (1.09-1.89) for CVD mortality, respectively. There was also a tendency to increase risk of mortality in patients with high serum Mg levels and low Ca-Mg ratios. Associations of low serum Mg and high Ca-Mg ratio with risk of mortality did not change when stratified by gender, body mass index, CAD type, estimated glomerular filtration rate, use of diuretics, or history of diabetes or hypertension. CONCLUSION This study demonstrated that a moderate Ca-Mg ratio (range: 3.91-4.70) had the lowest mortality risk, and that low serum Mg and high Ca-Mg ratio were independent risk factors of mortality in CAD patients. Nevertheless, the optimal dose-response of Mg and Ca for mitigating CAD risk still requires further investigation.
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Affiliation(s)
- Q Li
- Department of Nutrition, School of Public Health, Sun Yat-sen University, 74, Zhongshan Rd 2, 510080 Guangzhou, Guangdong Province, PR China; Guangdong Provincial Key Laboratory of Food, Nutrition and Health, 510080 Guangzhou, Guangdong Province, PR China
| | - Q Chen
- Department of Cardiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, 510120 Guangzhou, Guangdong Province, PR China
| | - H Zhang
- Department of Nutrition, School of Public Health, Sun Yat-sen University, 74, Zhongshan Rd 2, 510080 Guangzhou, Guangdong Province, PR China; Guangdong Provincial Key Laboratory of Food, Nutrition and Health, 510080 Guangzhou, Guangdong Province, PR China
| | - Z Xu
- Department of Nutrition, School of Public Health, Sun Yat-sen University, 74, Zhongshan Rd 2, 510080 Guangzhou, Guangdong Province, PR China; Guangdong Provincial Key Laboratory of Food, Nutrition and Health, 510080 Guangzhou, Guangdong Province, PR China
| | - X Wang
- Department of Nutrition, School of Public Health, Sun Yat-sen University, 74, Zhongshan Rd 2, 510080 Guangzhou, Guangdong Province, PR China; Guangdong Provincial Key Laboratory of Food, Nutrition and Health, 510080 Guangzhou, Guangdong Province, PR China
| | - J Pang
- Department of Nutrition, School of Public Health, Sun Yat-sen University, 74, Zhongshan Rd 2, 510080 Guangzhou, Guangdong Province, PR China; Guangdong Provincial Key Laboratory of Food, Nutrition and Health, 510080 Guangzhou, Guangdong Province, PR China
| | - J Ma
- Department of Nutrition, School of Public Health, Sun Yat-sen University, 74, Zhongshan Rd 2, 510080 Guangzhou, Guangdong Province, PR China; Guangdong Provincial Key Laboratory of Food, Nutrition and Health, 510080 Guangzhou, Guangdong Province, PR China
| | - W Ling
- Department of Nutrition, School of Public Health, Sun Yat-sen University, 74, Zhongshan Rd 2, 510080 Guangzhou, Guangdong Province, PR China; Guangdong Provincial Key Laboratory of Food, Nutrition and Health, 510080 Guangzhou, Guangdong Province, PR China; Guangdong Engineering Technology Centre of Nutrition Transformation, 510080 Guangzhou, Guangdong Province, PR China.
| | - D Li
- Department of Nutrition, School of Public Health, Sun Yat-sen University, 74, Zhongshan Rd 2, 510080 Guangzhou, Guangdong Province, PR China; Guangdong Provincial Key Laboratory of Food, Nutrition and Health, 510080 Guangzhou, Guangdong Province, PR China; Guangdong Engineering Technology Centre of Nutrition Transformation, 510080 Guangzhou, Guangdong Province, PR China.
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Crist RC, Doyle GA, Nelson EC, Degenhardt L, Martin NG, Montgomery GW, Saxon AJ, Ling W, Berrettini WH. A polymorphism in the OPRM1 3'-untranslated region is associated with methadone efficacy in treating opioid dependence. Pharmacogenomics J 2016; 18:173-179. [PMID: 27958381 PMCID: PMC5468510 DOI: 10.1038/tpj.2016.89] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 11/07/2016] [Accepted: 11/14/2016] [Indexed: 11/10/2022]
Abstract
The mu-opioid receptor (MOR) is the primary target of methadone and buprenorphine. The primary neuronal transcript of the OPRM1 gene, MOR-1, contains a ~13kb 3′ untranslated region with five common haplotypes in European-Americans. We analyzed the effects of these haplotypes on the percentage of opioid positive urine tests in European-Americans (n = 582) during a 24-week, randomized, open-label trial of methadone or buprenorphine/naloxone (Suboxone) for the treatment of opioid dependence. A single haplotype, tagged by rs10485058, was significantly associated with patient urinalysis data in the methadone treatment group. Methadone patients with the A/A genotype at rs10485058 were less likely to have opioid-positive urine drug screens than those in the combined A/G and G/G genotypes group (Relative Risk = 0.76, 95% confidence intervals = 0.73–0.80, p = 0.0064). Genotype at rs10485058 also predicted self-reported relapse rates in an independent population of Australian patients of European descent (n = 1215) who were receiving opioid substitution therapy (p = 0.003). In silico analysis predicted that miR-95-3p would interact with the G, but not the A allele of rs10485058. Luciferase assays indicated miR-95-3p decreased reporter activity of constructs containing the G, but not the A allele of rs10485058, suggesting a potential mechanism for the observed pharmacogenetic effect. These findings suggest that selection of a medication for opioid dependence based on rs10485058 genotype might improve outcomes in this ethnic group.
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Affiliation(s)
- R C Crist
- Department of Psychiatry, Center for Neurobiology and Behavior, University of Pennsylvania School of Medicine, PA, Pennsylvania, USA
| | - G A Doyle
- Department of Psychiatry, Center for Neurobiology and Behavior, University of Pennsylvania School of Medicine, PA, Pennsylvania, USA
| | - E C Nelson
- Department of Psychiatry, Washington University School of Medicine, St Louis, MO, USA
| | - L Degenhardt
- National Drug and Alcohol Research Centre, UNSW Australia, Sydney, New South Wales, Australia
| | - N G Martin
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - G W Montgomery
- The University of Queensland, Herston, Queensland, Australia
| | - A J Saxon
- Veteran's Affairs Puget Sound Health Care System, Seattle, WA, USA
| | - W Ling
- University of California, Los Angeles, Integrated Substance Abuse Programs, Los Angeles, CA, USA
| | - W H Berrettini
- Department of Psychiatry, Center for Neurobiology and Behavior, University of Pennsylvania School of Medicine, PA, Pennsylvania, USA
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Ma X, Zhao Y, Zhang B, Ling W, Zhuo H, Jia H, Li P. Contrast-enhanced ultrasound for differential diagnosis of malignant and benign ovarian tumors: systematic review and meta-analysis. Ultrasound Obstet Gynecol 2016; 46:277-83. [PMID: 25644038 DOI: 10.1002/uog.14800] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2014] [Revised: 01/21/2015] [Accepted: 01/21/2015] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To assess the performance of contrast-enhanced ultrasound (CE-US) in the differential diagnosis of malignant and benign ovarian tumors. METHODS We conducted a comprehensive literature search of PubMed and EMBASE to identify published articles evaluating the diagnostic potential of CE-US for the differentiation of benign and malignant ovarian tumors. Inclusion criteria were: (1) the study assessed the accuracy (or sensitivity and specificity) of CE-US for diagnosis of benign and malignant ovarian tumors; (2) it used surgery and histopathology as the reference standard for distinguishing between benign and malignant tumors; (3) it included data allowing construction of a 2×2 contingency table for true- and false-positives and negatives. We present summary sensitivity, specificity, diagnostic odds ratio (OR) and areas under the summary receiver-operating characteristics curves (AUCs). RESULTS Preliminary screening identified 103 papers, of which 11 fulfilled our predefined inclusion criteria and underwent final analysis. The pooled sensitivity and specificity of CE-US for diagnosis of benign and malignant ovarian tumors were 93% (95% CI, 89-96%) and 95% (95% CI, 92-96%), respectively. The pooled diagnostic OR was 171.2 (95% CI, 65.9-444.6) and the AUC was 0.98. I(2) values of sensitivity, specificity and diagnostic OR were 38.3%, 31.7% and 48.4%, respectively, all indicating moderate heterogeneity. CONCLUSIONS The evidence from available studies suggests CE-US is useful for discriminating between benign and malignant ovarian tumors; however, further studies are needed to examine whether CE-US has improved diagnostic test accuracy compared with that of standard two-dimensional Doppler sonography.
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Affiliation(s)
- X Ma
- Cancer Center, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, Sichuan, PR China.,Department of Oncology, West China Hospital of Sichuan University, Chengdu, Sichuan, PR China
| | - Y Zhao
- Cancer Center, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, Sichuan, PR China
| | - B Zhang
- Department of Oncology, West China Hospital of Sichuan University, Chengdu, Sichuan, PR China
| | - W Ling
- Department of Ultrasound, West China Hospital of Sichuan University, Chengdu, Sichuan, PR China
| | - H Zhuo
- Department of Oncology, West China Hospital of Sichuan University, Chengdu, Sichuan, PR China
| | - H Jia
- Cancer Center, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, Sichuan, PR China
| | - P Li
- Department of Oncology, West China Hospital of Sichuan University, Chengdu, Sichuan, PR China
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Schulte M, Hser Y, Saxon A, Evans E, Li L, Huang D, Hillhouse M, Thomas C, Ling W. Risk Factors Associated with HCV Among Opioid-Dependent Patients in a Multisite Study. J Community Health 2016; 40:940-7. [PMID: 25814381 DOI: 10.1007/s10900-015-0016-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We examined risk factors associated with hepatitis C virus (HCV) infection among opioid-dependent patients enrolled into medication-assisted therapy (buprenorphine or methadone) to determine factors affecting chronic infection. Patients (N = 1039) were randomized as part of a larger, multisite clinical trial sponsored by the National Drug Abuse Treatment Clinical Trials Network assessing liver function. HCV status was first assessed with an antibody screen; if positive, then current infection was determined with an antigen screen testing for detectable virus. Patients were classified as HCV negative, HCV positive but have cleared the virus, or as having chronic HCV. Logistic regression analysis was used to examine demographic and behavioral correlates of the three groups. Thirty-four percent of patients were classified with chronic infection and 14% had evidence of prior infection with apparent clearing of the virus. Chronic infection was associated with recent injection drug use and cocaine use. Chronic HCV infection was also associated with being older and Hispanic. Age, ethnicity, and current drug use increase the likelihood of being chronically infected with HCV. Strategies targeting high risk subgroups can aid in preventing further disease escalation.
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Affiliation(s)
- M Schulte
- UCLA Integrated Substance Abuse Programs, Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, 11075 Santa Monica Blvd., Suite 200, Los Angeles, CA, 90025, USA,
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10
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Nosyk B, Bray JW, Wittenberg E, Aden B, Eggman AA, Weiss RD, Potter J, Ang A, Y-I H, Ling W, Schackman BR. Short term health-related quality of life improvement during opioid agonist treatment. Drug Alcohol Depend 2015; 157:121-8. [PMID: 26511766 PMCID: PMC4778423 DOI: 10.1016/j.drugalcdep.2015.10.009] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2015] [Revised: 10/06/2015] [Accepted: 10/06/2015] [Indexed: 10/22/2022]
Abstract
BACKGROUND Opioid dependence is associated with high levels of morbidity, yet sparse data exists regarding the health-related quality of life (HRQoL) of individuals with opioid dependence, particularly following treatment initiation. To inform cost-effectiveness analyses of treatment modalities, this study investigates short-term changes in HRQoL following enrollment into opioid agonist treatment (OAT), across treatment modalities and patient subgroups. METHODS Data was analyzed from the Starting Treatment with Agonist Replacement Therapies (START) and Prescription Opioid Addiction Treatment Studies (POATS) randomized controlled trials. Participants included individuals dependent on prescription opioids (POs) or heroin, receiving limited-term or time-unlimited treatment. PO- or heroin-users in START received buprenorphine/naloxone (BUP/NX) or methadone (MET) over 24 weeks. PO-users in POATS received psychosocial care and short-term (4-week) taper with BUP/NX, with non-responders offered subsequent extended (12-week) stabilization and taper. HRQoL was assessed using the short-form SF-6D while in and out of OAT, with distinction between MMT and BUP/NX in START. Linear mixed effects regression models were fitted to determine the independent effects of OAT on HRQoL and characterize HRQoL trajectories. RESULTS Treatment had a similar immediate and modest positive association with HRQoL in each patient subgroup. The association of OAT on HRQoL was statistically significant in each model, with effect sizes between 0.039 (heroin-users receiving BUP/NX) and 0.071 (PO-users receiving MET). After initial improvement, HRQoL decreased slightly, or increased at a diminished rate. CONCLUSIONS OAT, whether delivered in time-limited or unlimited form, using BUP/NX or MET, is associated with modest immediate HRQoL improvements, with diminishing benefits thereafter.
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Affiliation(s)
- B Nosyk
- BC Centre for Excellence in HIV/AIDS, Vancouver, BC, Canada; Faculty of Health Sciences, Simon Fraser University, Burnaby, BC, Canada.
| | - JW Bray
- University of North Carolina, Greensboro,Research Triangle International
| | | | - B Aden
- Department of Healthcare Policy and Research, Weill Cornell Medical College
| | - AA Eggman
- Department of Healthcare Policy and Research, Weill Cornell Medical College
| | - RD Weiss
- Harvard Medical School, Boston, MA,McLean Hospital, Belmont, MA
| | - J Potter
- Departments of Psychiatry and Anesthesiology (Pain Medicine), Faculty of Medicine, University of Texas Health Science Center, San Antonio, TX
| | - A Ang
- UCLA Integrated Substance Abuse Programs, Los Angeles CA
| | - Hser Y-I
- UCLA Integrated Substance Abuse Programs, Los Angeles CA
| | - W Ling
- UCLA Integrated Substance Abuse Programs, Los Angeles CA
| | - BR Schackman
- Department of Healthcare Policy and Research, Weill Cornell Medical College
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11
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Shen SW, Lu Y, Li F, Shen ZH, Xu M, Yao WF, Feng YB, Yun JT, Wang YP, Ling W, Qi HJ, Tong DX. The potential long-term effect of previous schistosome infection reduces the risk of metabolic syndrome among Chinese men. Parasite Immunol 2015; 37:333-9. [PMID: 25809087 DOI: 10.1111/pim.12187] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2014] [Accepted: 03/13/2015] [Indexed: 12/19/2022]
Affiliation(s)
- S.-W. Shen
- Wuxi No. 2 People's Hospital Affiliated to Nanjing Medical University; Wuxi City Jiangsu Province China
| | - Y. Lu
- Jiangsu Provincial Taihu Cadre's Sanatorium of Jiangsu Provincial People's Hospital Group; Wuxi City Jiangsu Province China
| | - F. Li
- Jiangsu Provincial Taihu Cadre's Sanatorium of Jiangsu Provincial People's Hospital Group; Wuxi City Jiangsu Province China
| | - Z.-H. Shen
- Jiangsu Provincial Taihu Cadre's Sanatorium of Jiangsu Provincial People's Hospital Group; Wuxi City Jiangsu Province China
| | - M. Xu
- Jiangsu Institute of Parasitic Diseases; Wuxi City Jiangsu Province China
| | - W.-F. Yao
- Wuxi No. 2 People's Hospital Affiliated to Nanjing Medical University; Wuxi City Jiangsu Province China
| | - Y.-B. Feng
- Jiangsu Provincial Taihu Cadre's Sanatorium of Jiangsu Provincial People's Hospital Group; Wuxi City Jiangsu Province China
| | - J.-T. Yun
- Jiangsu Provincial Taihu Cadre's Sanatorium of Jiangsu Provincial People's Hospital Group; Wuxi City Jiangsu Province China
| | - Y.-P. Wang
- Wuxi No. 2 People's Hospital Affiliated to Nanjing Medical University; Wuxi City Jiangsu Province China
| | - W. Ling
- Jiangsu Provincial Taihu Cadre's Sanatorium of Jiangsu Provincial People's Hospital Group; Wuxi City Jiangsu Province China
| | - H.-J. Qi
- Jiangsu Provincial Taihu Cadre's Sanatorium of Jiangsu Provincial People's Hospital Group; Wuxi City Jiangsu Province China
| | - D.-X. Tong
- Jiangsu Provincial Taihu Cadre's Sanatorium of Jiangsu Provincial People's Hospital Group; Wuxi City Jiangsu Province China
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Ling W, Zhigang H, Tian H, Bin Z, Xiaolin X, Hongxiu Z. HPV 16 infection up-regulates Piwil2, which affects cell proliferation and invasion in cervical cancer by regulating MMP-9 via the MAPK pathway. EUR J GYNAECOL ONCOL 2015; 36:647-654. [PMID: 26775345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
PURPOSE OF INVESTIGATION The present study aimed to investigate the effect of Piwil2 on proliferation and invasion of cervical cancer cells. MATERIALS AND METHODS Thirty-two HPV-positive or negative cervical cancer tissues and corresponding normal adjacent cervical tissues were obtained from General Hospital of Lanzhou Military Region. Piwil2 expression in these tissue samples, as well as two cervical cell lines were evaluated by quantitative real-time polymerase chain reaction (qRT-PCR) and immunohistochemical. A specific short hairpin RNA (shRNA) was used to knockdown the Piwil2 gene in SiHa cells. CCK-8 assay and flow cytometry (FCM) was used to evaluate cell proliferation. Cell invasion was detected by transwell chambers assays. Immunoblotting was used to assess the effect on relevant proteins. RESULT In the early stage (I A1-I B1) of curvival, 84.4% (27/32) tumor tissues have a more predominant expression of Piwil2 than the normal adjacent samples. Piwil2 overexpression was correlated with HPV16 infection (p < 0.05). Knockdown of Piwil2 gene in SiHa cells inhibited cell growth and invasion, and downregulated matrix metalloproteinase-9 (MMP-9) compared to scrambled shRNA transfected cells. Further analysis revealed that downregulation of Piwil2 gene induced inhibition of the MAPK signaling pathway activity. CONCLUSION Piwil2, which stimulated by HPV16 infection, plays an important role in regulating proliferation and invasion of cervical cells by regulating MMP-9 expression via alternation of the MAPK signaling pathway.
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Xue F, Dong CY, Su Y, Zhu H, Ling W, Liu Y, Xu H, Xiao W, Zhou S, Qi YP. Tumor-targeted therapy with a conditionally replicating mutant of HSV-1 induces regression of xenografted human hepatomas. Cancer Biol Ther 2014; 4:1234-9. [PMID: 16357508 DOI: 10.4161/cbt.4.11.2094] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The selectively oncolytic effects of mtHSV, a HSV icp34.5 mutant with lacz gene insertion, on several tumor cells in vitro and its antitumor effects by the intratumoral (IT) route to nude mice loaded the human hepatoma xenografts were explored. The mtHSV could conditionally replicate in and lyse Hep-3B (human hepatoma cells), Hep-2 (human larynx cancer cells) and SPC-A1 (human lung cancer cells), but not MRC-5 (human fibroblast cells). The 125 nude mice loaded with Hep-3B were randomly divided into five treatment groups and given three IT injections with three different dose of the mtHSV, adriamycin (ADM), or vehicle (supernatant of non-infected Vero cells). Significant tumor growth inhibition (30%-70%) was seen in the nude mice treated IT with mtHSV, whereas tumors treated IT with Vero supernatant displayed rapid tumor growth. The results of regular and biochemical blood examination, systemic necropsy and pathological slices showed that mtHSV almost has no side effect on treated mice. RT-PCR results revealed that the replication of mtHSV was exclusively confined to the treated tumors, but not to other organs. Our results provide further preclinical evidence that mtHSV may be used as an oncolytic agent for cancer therapy.
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Affiliation(s)
- Feng Xue
- State Key Laboratory of Virology, College of Life Science, Wuhan University, Wuhan, Hubei Province, PR China
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Abstract
We previously reported that the mutant virus of HSV (mtHSV) mediated tumor therapy was efficacious in Balb/c and nude mice. However, it is significant to know whether mtHSV works in HSV-1 tumor seropositive individuals because many patients with HSV-1 seropositivity have been found in clinical trial. Here we asked whether the oncolytic effect of mtHSV is influenced under condition of HSV-1 seropositivity. In this study, Balb/c mice were immunized intraperitoneally with mtHSV and HSV-1 F. Subsequently, HSV seropositive and naive Balb/c mice were inoculated with sarcoma 180 cells in the armpit of left forelimb and then were treated with mtHSV intratumorally. The results shown that the growth of tumor in HSV-1 F seropositive mice was inhibited dramatically after treatment with mtHSV; and significant differences in mean tumor growth ratio were found compared with the groups of mtHSV seropositive mice and naive mice. These data demonstrated that the effect of mtHSV-mediated tumor therapy couldn't be weaken but enhanced by HSV seropositivity. Furthermore, comparison of in vitro cytotoxicity to S-180 cells of PBMC from HSV seropositive and naive mice showed PBMC from HSV-1 F seropositive had the highest killing percentage. Cytokines transcription level of PBMC showed IFNgamma were enhanced remarkably in early and late infection stage in HSV seropositive mice, which implied that it could be an important factor to inhibit the tumor growth or eliminate the tumor directly.
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Affiliation(s)
- Huabin Zhu
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei, China
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Ling W, Zhang J, Yuan Z, Ren G, Zhang L, Chen X, Rabson AB, Roberts AI, Wang Y, Shi Y. Mesenchymal stem cells use IDO to regulate immunity in tumor microenvironment. Cancer Res 2014; 74:1576-87. [PMID: 24452999 DOI: 10.1158/0008-5472.can-13-1656] [Citation(s) in RCA: 141] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Mesenchymal stem cells (MSC) are present in most, if not all, tissues and are believed to contribute to tissue regeneration and the tissue immune microenvironment. Murine MSCs exert immunosuppressive effects through production of inducible nitric oxide synthase (iNOS), whereas human MSCs use indoleamine 2,3-dioxygenase (IDO). Thus, studies of MSC-mediated immunomodulation in mice may not be informative in the setting of human disease, although this critical difference has been mainly ignored. To address this issue, we established a novel humanized system to model human MSCs, using murine iNOS(-/-) MSCs that constitutively or inducibly express an ectopic human IDO gene. In this system, inducible IDO expression is driven by a mouse iNOS promoter that can be activated by inflammatory cytokine stimulation in a similar fashion as the human IDO promoter. These IDO-expressing humanized MSCs (MSC-IDO) were capable of suppressing T-lymphocyte proliferation in vitro. In melanoma and lymphoma tumor models, MSC-IDO promoted tumor growth in vivo, an effect that was reversed by the IDO inhibitor 1-methyl-tryptophan. We found that MSC-IDO dramatically reduced both tumor-infiltrating CD8(+) T cells and B cells. Our findings offer an important new line of evidence that interventional targeting of IDO activity could be used to restore tumor immunity in humans, by relieving IDO-mediated immune suppression of MSCs in the tumor microenvironment as well as in tumor cells themselves.
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MESH Headings
- Animals
- B-Lymphocytes/immunology
- B-Lymphocytes/metabolism
- CD8-Positive T-Lymphocytes/immunology
- CD8-Positive T-Lymphocytes/metabolism
- Cell Proliferation
- Cells, Cultured
- Humans
- Indoleamine-Pyrrole 2,3,-Dioxygenase/genetics
- Indoleamine-Pyrrole 2,3,-Dioxygenase/immunology
- Indoleamine-Pyrrole 2,3,-Dioxygenase/metabolism
- Mesenchymal Stem Cells/immunology
- Mesenchymal Stem Cells/metabolism
- Mice
- Mice, Inbred C57BL
- Nitric Oxide Synthase Type II/genetics
- Nitric Oxide Synthase Type II/immunology
- Nitric Oxide Synthase Type II/metabolism
- Promoter Regions, Genetic/genetics
- Promoter Regions, Genetic/immunology
- Tumor Microenvironment/genetics
- Tumor Microenvironment/immunology
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Affiliation(s)
- Weifang Ling
- Authors' Affiliations: Child Health Institute of New Jersey, Robert Wood Johnson Medical School, Rutgers, The State University of New Jersey, New Brunswick, New Jersey; and Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences/Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Krupitsky EM, Nunes EV, Ling W, Gastfriend DR, Memisoglu A, Blokhina EA, Silverman BL. [Injectable extended-release naltrexone for opioid dependence: an open label study of long-term safety and efficacy]. Zh Nevrol Psikhiatr Im S S Korsakova 2014; 114:49-56. [PMID: 25591636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To evaluate efficacy and safety of injectable extended-release naltrexone (XR-NTX, Vivitrol), an opioid receptor antagonist, in the treatment of opioid dependence, we carried out a 1-year open-label extension study. MATERIAL AND METHODS The study followed the initial 6-month randomized, double-blind, PBO-controlled investigation of XR-NTX, used in dose 380 mg, as a treatment for opioid dependence. The study was conducted at 13 clinical sites in Russia. The main measurements were monthly urine samples (efficacy) and adverse events (safety). RESULTS AND CONCLUSION The open-label extension included 114 patients (67 continued on XR-NTX and 47 switched from placebo). Overall, 62.3% (95% CI: 52.7%, 71.2%) of patients completed the extension. Urine testing revealed that 50.9% (41.5%, 60.4%) were abstinent from opioids at all assessments during the 1-year open-label phase. Adverse events were reported by 21.1% of patients. Elevations in liver function tests occurred in 16.7% of patients. No severe adverse events were reported. The data obtained demonstrate the long-term safety and efficacy of XR-NTX in opioid dependent patients.
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17
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Zhu Y, Ling W, Guo H, Song F, Ye Q, Zou T, Li D, Zhang Y, Li G, Xiao Y, Liu F, Li Z, Shi Z, Yang Y. Anti-inflammatory effect of purified dietary anthocyanin in adults with hypercholesterolemia: a randomized controlled trial. Nutr Metab Cardiovasc Dis 2013; 23:843-849. [PMID: 22906565 DOI: 10.1016/j.numecd.2012.06.005] [Citation(s) in RCA: 168] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2011] [Revised: 05/28/2012] [Accepted: 06/02/2012] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND AIM Atherosclerosis is a chronic inflammatory disease and previous studies have demonstrated that anthocyanin inhibits atherosclerosis. In the present study, we explored the effects of anthocyanins on inflammatory cytokines in hypercholesterolemic adults and cell lines. METHODS AND RESULTS A total of 150 subjects with hypercholesterolemia consumed a purified anthocyanin mixture (320 mg/d) or a placebo twice a day for 24 weeks in a randomized, double-blind trial. Anthocyanin consumption significantly decreased the levels of serum high sensitivity C-reactive protein (hsCRP) (-21.6% vs. -2.5%, P = 0.001), soluble vascular cell adhesion molecule-1 (sVCAM-1) (-12.3% vs. 0.4%, P = 0.005) and plasma IL-1β (-12.8% vs. -1.3%, P = 0.019) compared to the placebo. We also found a significant difference in the LDL-cholesterol (-10.4% vs. 0.3%, P = 0.030) and HDL-cholesterol level changes (14.0% vs. -0.9%, P = 0.036) between the two groups. In cell culture assays in vitro, purified anthocyanin mixture, delphinidin-3-Ο-β-glucoside (Dp-3g) and cyanidin-3-Ο-β-glucoside (Cy-3g) inhibited IL-6 and IL-1β-induced CRP production (P < 0.05) in HepG2 cell line and LPS-induced VCAM-1 secretion (P < 0.05) in porcine iliac artery endothelial cell line respectively in a dose-dependent manner. In addition, the reduction of inflammatory cytokines associated with anthocyanin mixture was stronger when compared with the effects of Dp-3g and Cy-3g separately (P < 0.05). CONCLUSIONS Anthocyanin mixture reduced the inflammatory response in hypercholesterolemic subjects. In addition, different anthocyanin compounds were found to have additive or synergistic effects in mediating anti-inflammatory responses in vitro cell culture assays.
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Affiliation(s)
- Y Zhu
- Guangdong Provincial Key Laboratory of Food, Nutrition, and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou, Guangdong Province, PR China; Department of Maternal and Child Health, School of Public Health, Sun Yat-Sen University, Guangzhou, Guangdong Province, PR China
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Tan C, Ling W, Soh T, Pang A, Voon P, Lee S. AOS26 Bevacizumab-induced hypertension and use of anti-hypertensive drugs is associated with improved outcome in patients with solid organ tumours treated with bevacizumab. Eur J Cancer 2012. [DOI: 10.1016/j.ejca.2012.02.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Krupitskiĭ EM, Nunes EV, Ling W, Illeperuma A, Gastfriend DR, Blokhina EA, Silverman BL. [Injectable extended-release naltrexone for opioid dependence: a double-blind, placebo-controlled, multicentre randomized trial]. Zh Nevrol Psikhiatr Im S S Korsakova 2012; 112:3-11. [PMID: 22951790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
UNLABELLED We aimed to assess the efficacy and safety of an injectable, once monthly extended-release formulation of the opioid antagonist naltrexone (XR-NTX) for treatment of patients with opioid dependence after detoxification. Two hundreds and fifty patients with opioid dependence were enrolled into the double-blind, placebo-controlled, randomized, 24-week trial. Patients aged 18 years or over who had inpatient detoxification and 7 days or more off all opioids were enrolled at 13 clinical sites in Russia. We randomly assigned patients (1:1) to either 380 mg XR-NTX (n=124) or placebo (n=126). Participants also received 12 biweekly counseling sessions. The primary endpoint was the response profile for confirmed abstinence during weeks 5-24 assessed by urine drug tests and self report of non-use. Secondary endpoints were self-reported opioid- free days, opioid craving scores, number of days of retention, and relapse to physiological opioid dependence. IN CONCLUSION XR-NTX represents a new treatment option. XR-NTX in conjunction with psychosocial treatment was more effective for treatment of opioid dependence compare to psychosocial support and placebo.
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Ye Q, Lian F, Chavez PRG, Chung J, Ling W, Seitz HK, Wang XD, French SW, Li X, Li J, Bardag-Gorce F, Oliva J, French BA, Maurel DB, Jaffre C, Fazzalari NL, Uzbekov R, Boisseau N, Rochefort GY, Pallu S, Benhamou C, Naassila M, Warnault V, Legastelois R, Vilpoux C, Botia B, Houchi H, Pierrefiche O, Jeanblanc J, Kervern M, Alaux S, Walther L, Hansson T, Andersson A, Alling C, Isaksson A, Hoiseth G, Nordal K, Morland J. FREE ORAL COMMUNICATIONS 5: ALCOHOL-RELATED LIVER DISEASES: BIOLOGICAL MARKERS * O5.1 * THE CYTOCHROME P450 2E1 INHIBITOR CHLORMETHIAZOLE INHIBITS HEPATIC ETHANOL-MEDIATED CARCINOGENESIS INDUCED BY DIETHYLNITROSAMINE. Alcohol Alcohol 2011. [DOI: 10.1093/alcalc/agr097] [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: 11/14/2022] Open
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Liu YH, Xie ZD, Ling W, Yuan Y, Lv XJ, Lu J, Hu XP, Zhao G, Zhu SN. Efficiency-enhanced optical parametric down conversion for mid-infrared generation on a tandem periodically poled MgO-doped stoichiometric lithium tantalate chip. Opt Express 2011; 19:17500-17505. [PMID: 21935116 DOI: 10.1364/oe.19.017500] [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] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We report an efficiency-enhanced mid-infrared generation via optical parametric down conversion. A tandem periodically-poled MgO-doped stoichiometric lithium tantalate crystal is used to realize on-chip generation and amplification of mid-infrared radiation inside an optical parametric oscillator cavity. We achieved 21.2% conversion efficiency (24% slope efficiency), which is among the highest efficiencies for the pump-to-mid-infrared conversion, with 1064 nm Nd class laser pump. The maximum average output power at 3.87 μm reached 635 mW with a 3.0 W pump.
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Affiliation(s)
- Y H Liu
- National Laboratory of Solid State Microstructures, College of Physics, Nanjing University, Nanjing, China
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Liu YH, Xie ZD, Ling W, Lv XJ, Zhu SN. Generation of a twin beam at the cesium line and telecom wavelength by cavity phase matching. Opt Lett 2011; 36:3139-3141. [PMID: 21847186 DOI: 10.1364/ol.36.003139] [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] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Cavity phase matching has been recently demonstrated as a phase-matching method for efficient nonlinear frequency conversion in a microcavity. Here we extend it to the Type I configuration using a sub-coherent-length optical parametric oscillator consisting of an MgO-doped lithium niobate crystal sheet. It generates a tunable single-longitudinal-mode twin beam, which covers the cesium D2 line of 852.1 nm and the extended band of optical communication. This microcavity is capable of peak output power of 58 kW with a maximum conversion efficiency of 18.5%. Broad applications in the areas of light-atom interaction, spectroscopy, optical telecommunication, and quantum optics can be expected.
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Affiliation(s)
- Y H Liu
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, 210093, China
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Yu Z, Shao W, Chiang Y, Foltz W, Zhang Z, Ling W, Fantus IG, Jin T. Oltipraz upregulates the nuclear factor (erythroid-derived 2)-like 2 [corrected](NRF2) antioxidant system and prevents insulin resistance and obesity induced by a high-fat diet in C57BL/6J mice. Diabetologia 2011; 54:922-34. [PMID: 21161163 DOI: 10.1007/s00125-010-2001-8] [Citation(s) in RCA: 137] [Impact Index Per Article: 10.5] [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: 08/18/2010] [Accepted: 11/03/2010] [Indexed: 12/23/2022]
Abstract
AIMS/HYPOTHESIS We investigated whether oltipraz, a nuclear respiratory factor 2 alpha subunit (NRF2) activator, improves insulin sensitivity and prevents the development of obesity in mice. METHODS C57BL/6J mice were fed with a low-fat diet (10% of energy as fat), a high-fat diet (HFD) (45% of energy as fat) or a HFD with oltipraz for 28 weeks. The effects of oltipraz on body weight, fat content, glucose disposal, insulin signalling, metabolic profiles and endogenous NRF2 functional status in the three groups of mice were investigated. RESULTS Oltipraz prevented or significantly attenuated the effect of HFD on glucose disposal, body weight and fat gain. Impairment of protein kinase B/Akt phosphorylation in this HFD-fed mouse model in response to intraperitoneal insulin injection was observed in adipose tissue, but not in the muscles, accompanied by inhibition of AMP-activated protein kinase signalling and activation of p70S6 kinase, as well as reduced GLUT4 content. These defects were attenuated by oltipraz administration. Nuclear content of NRF2 in adipose tissue was reduced by HFD feeding, associated with increased Keap1 mRNA expression and reduced production of haem oxygenase-1 and superoxide dismutase, increased protein oxidation, decreased plasma reduced:oxidised glutathione ratio and the appearance of macrophage marker F4/80. These defects were also restored by oltipraz. Finally, oltipraz attenuated HFD-induced inducible nitric oxide synthase overproduction. CONCLUSIONS/INTERPRETATION Impairment of the endogenous redox system is important in the development of obesity and insulin resistance in chronic HFD feeding. NRF2 activation represents a potential novel approach in the treatment and prevention of obesity and diabetes.
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Affiliation(s)
- Z Yu
- Guandong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, Public Health Institute, Sun Yat-Sen University, Guangzhou, People's Republic of China
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Xie ZD, Lv XJ, Liu YH, Ling W, Wang ZL, Fan YX, Zhu SN. Cavity phase matching via an optical parametric oscillator consisting of a dielectric nonlinear crystal sheet. Phys Rev Lett 2011; 106:083901. [PMID: 21405572 DOI: 10.1103/physrevlett.106.083901] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2010] [Indexed: 05/22/2023]
Abstract
We experimentally demonstrate cavity phase matching for the first time using a sheet optical parametric oscillator which is made of an x-cut KTiOPO(4) crystal sheet. This microcavity presents 220 kW peak power capability for near-frequency-degenerate parametric outputs with up to 23.8% slope efficiency. It also features unique spectral characteristics such as single-longitudinal-mode and narrow linewidth. These attractive properties predict broad applications of such a mini-device, such as terahertz generation, photonic integration, spectroscopy, and quantum information, etc.
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Affiliation(s)
- Z D Xie
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China.
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Ling W, Jiabao G, Yibin C, Tong L, Akira M, Hui Z. e0239 N-terminal pro-brain natriuretic peptide (NT-proBNP): a potential diagnostic biomarker for predicting cardiac dysfunction in patients with liver diseases. Heart 2010. [DOI: 10.1136/hrt.2010.208967.239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Xinyang H, Shanping Y, Jian-an W, Ling W. e0206 Bone marrow mesenchymal stem cell migration depends in part on Kv21 channel activity. Heart 2010. [DOI: 10.1136/hrt.2010.208967.206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Weng JY, Du X, Geng SX, Peng YW, Wang Z, Lu ZS, Wu SJ, Luo CW, Guo R, Ling W, Deng CX, Liao PJ, Xiang AP. Mesenchymal stem cell as salvage treatment for refractory chronic GVHD. Bone Marrow Transplant 2010; 45:1732-40. [PMID: 20818445 PMCID: PMC3035976 DOI: 10.1038/bmt.2010.195] [Citation(s) in RCA: 171] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Refractory chronic GVHD (cGVHD) is an important complication after allogeneic hematopoietic SCT and is prognostic of poor outcome. MSCs are involved in tissue repair and modulating immune responses in vitro and in vivo. From April 2005 to October 2008, 19 patients with refractory cGVHD were treated with MSCs derived from the BM of volunteers. The median dose of MSCs was 0.6 × 10(6) cells per kg body weight. Fourteen of 19 patients (73.7%) responded well to MSCs, achieving a CR (n=4) or a PR (n=10). The immunosuppressive agent could be tapered to less than 50% of the starting dose in 5 of 14 surviving patients, and five patients could discontinue immunosuppressive agents. The median duration between MSC administration and immunosuppressive therapy discontinuation was 324 days (range, 200-550 days). No patients experienced adverse events during or immediately after MSC infusion. The 2-year survival rate was 77.7% in this study. Clinical improvement was accompanied by the increasing ratio of CD5+CD19+/CD5-CD19+ B cells and CD8+CD28-/CD8+CD28+ T cells. In conclusion, transfusion of MSCs expanded in vitro, irrespective of the donor, might be a safe and effective salvage therapy for patients with steroid-resistant, cGVHD.
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Affiliation(s)
- J Y Weng
- Department of Haematology, Guangdong General Hospital, Academy of Medical Sciences, 106 Zhongshan Er Road, Guangzhou, Guangdong, PR China
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Li YR, Ling W, Chen FX, Fan XL. PP-138 Correlations of plasma lipid level with serum hepatitis C virus RNA and liver histopathological steatosis in patients with chronic hepatitis C. Int J Infect Dis 2010. [DOI: 10.1016/s1201-9712(10)60206-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Ren G, Zhang L, Wen T, Zhao X, Yuan ZR, Zhang J, Ling W, L'huillie A, Shao C, Shi Y. Tumor-derived mesenchymal stem cells enhance tumor development via nitric oxide (100.33). The Journal of Immunology 2010. [DOI: 10.4049/jimmunol.184.supp.100.33] [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] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
Mesenchymal stem cells (MSCs) have been widely applied in treating immune disorders due to their immunosuppressive capacity. However, a major concern for the clinical application of MSCs is their risk to promote tumorigenesis. In the meantime, there are increasing reports about the identification of MSCs from various tumor tissues. In this study, we compared the tumor-derived MSCs with bone marrow-derived MSCs (BM-MSCs) in vitro and in vivo. We found that only tumor-derived MSCs, but not BM-MSCs enhance tumor development. In vitro, tumor-derived MSCs had a similar capacity to suppress T cell receptor-induced T cell proliferation via nitric oxide (NO), but exhibited a more vigorous inhibition on the differentiation and maturation of dendritic cells, compared to BM-MSCs. Moreover, co-culture with tumor-derived MSCs led bone marrow cells to differentiate into more CD11b+Gr-1+ myeloid-derived suppressor cells (MDSCs), another NO-producing immunosuppressive cell population. In vivo, more MDSCs were also detected after administration of tumor-derived MSCs, but not BM-MSCs in tumor-bearing mice. Furthermore, tumor-derived MSCs, but not BM-MSCs significantly enhanced tumor growth, which was partially dependent on NO. Therefore, NO-dependent tumor promoting effect is likely not mediated by MSCs themselves, but through the indirect action of MDSCs. Our findings indicate a novel role of MSCs in tumor progression and provide new information for the clinical application of MSCs.
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Affiliation(s)
- Guangwen Ren
- 1Department of Molecular Genetics, Microbiology and Immunology, Robert Wood Johnson Medical School-UMDNJ, Piscataway, NJ
| | - Liying Zhang
- 1Department of Molecular Genetics, Microbiology and Immunology, Robert Wood Johnson Medical School-UMDNJ, Piscataway, NJ
| | - Ting Wen
- 2Department of Cell Biology and Neuroscience, Robert Wood Johnson Medical School-UMDNJ, Piscataway, NJ
| | - Xin Zhao
- 3Department of Genetics, Rutgers, The State University of New Jersey, Piscataway, NJ
| | - Zeng-rong Yuan
- 1Department of Molecular Genetics, Microbiology and Immunology, Robert Wood Johnson Medical School-UMDNJ, Piscataway, NJ
| | - Jimin Zhang
- 1Department of Molecular Genetics, Microbiology and Immunology, Robert Wood Johnson Medical School-UMDNJ, Piscataway, NJ
| | - Weifang Ling
- 1Department of Molecular Genetics, Microbiology and Immunology, Robert Wood Johnson Medical School-UMDNJ, Piscataway, NJ
| | - Andrew L'huillie
- 1Department of Molecular Genetics, Microbiology and Immunology, Robert Wood Johnson Medical School-UMDNJ, Piscataway, NJ
| | - Changshun Shao
- 3Department of Genetics, Rutgers, The State University of New Jersey, Piscataway, NJ
| | - Yufang Shi
- 1Department of Molecular Genetics, Microbiology and Immunology, Robert Wood Johnson Medical School-UMDNJ, Piscataway, NJ
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Ren G, Zhao X, Zhang L, Zhang J, L'Huillier A, Ling W, Roberts AI, Le AD, Shi S, Shao C, Shi Y. Inflammatory cytokine-induced intercellular adhesion molecule-1 and vascular cell adhesion molecule-1 in mesenchymal stem cells are critical for immunosuppression. J Immunol 2010; 184:2321-8. [PMID: 20130212 PMCID: PMC2881946 DOI: 10.4049/jimmunol.0902023] [Citation(s) in RCA: 461] [Impact Index Per Article: 32.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Cell-cell adhesion mediated by ICAM-1 and VCAM-1 is critical for T cell activation and leukocyte recruitment to the inflammation site and, therefore, plays an important role in evoking effective immune responses. However, we found that ICAM-1 and VCAM-1 were critical for mesenchymal stem cell (MSC)-mediated immunosuppression. When MSCs were cocultured with T cells in the presence of T cell Ag receptor activation, they significantly upregulated the adhesive capability of T cells due to the increased expression of ICAM-1 and VCAM-1. By comparing the immunosuppressive effect of MSCs toward various subtypes of T cells and the expression of these adhesion molecules, we found that the greater expression of ICAM-1 and VCAM-1 by MSCs, the greater the immunosuppressive capacity that they exhibited. Furthermore, ICAM-1 and VCAM-1 were found to be inducible by the concomitant presence of IFN-gamma and inflammatory cytokines (TNF-alpha or IL-1). Finally, MSC-mediated immunosuppression was significantly reversed in vitro and in vivo when the adhesion molecules were genetically deleted or functionally blocked, which corroborated the importance of cell-cell contact in immunosuppression by MSCs. Taken together, these findings reveal a novel function of adhesion molecules in immunoregulation by MSCs and provide new insights for the clinical studies of antiadhesion therapies in various immune disorders.
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MESH Headings
- Animals
- Antibodies, Neutralizing/immunology
- Antibodies, Neutralizing/pharmacology
- Cells, Cultured
- Coculture Techniques
- Culture Media, Conditioned/pharmacology
- Female
- Flow Cytometry
- Immunosuppression Therapy
- Inflammation Mediators/immunology
- Inflammation Mediators/metabolism
- Intercellular Adhesion Molecule-1/genetics
- Intercellular Adhesion Molecule-1/metabolism
- Interferon-gamma/immunology
- Interferon-gamma/metabolism
- Interleukin-1/immunology
- Interleukin-1/metabolism
- Male
- Mesenchymal Stem Cells/drug effects
- Mesenchymal Stem Cells/immunology
- Mesenchymal Stem Cells/metabolism
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Mice, Transgenic
- Receptors, Interferon/genetics
- Receptors, Interferon/metabolism
- Receptors, Tumor Necrosis Factor, Type I/genetics
- Receptors, Tumor Necrosis Factor, Type I/metabolism
- Reverse Transcriptase Polymerase Chain Reaction
- Spleen/cytology
- Spleen/immunology
- Spleen/metabolism
- T-Lymphocytes/immunology
- T-Lymphocytes/metabolism
- Tumor Necrosis Factor-alpha/immunology
- Tumor Necrosis Factor-alpha/metabolism
- Vascular Cell Adhesion Molecule-1/genetics
- Vascular Cell Adhesion Molecule-1/metabolism
- Interferon gamma Receptor
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Affiliation(s)
- Guangwen Ren
- Department of Molecular Genetics, Microbiology, and Immunology, Robert Wood Johnson Medical School-University of Medicine and Dentistry of New Jersey
| | - Xin Zhao
- Department of Molecular Genetics, Microbiology, and Immunology, Robert Wood Johnson Medical School-University of Medicine and Dentistry of New Jersey
| | - Liying Zhang
- Department of Molecular Genetics, Microbiology, and Immunology, Robert Wood Johnson Medical School-University of Medicine and Dentistry of New Jersey
| | - Jimin Zhang
- Department of Molecular Genetics, Microbiology, and Immunology, Robert Wood Johnson Medical School-University of Medicine and Dentistry of New Jersey
| | - Andrew L'Huillier
- Department of Molecular Genetics, Microbiology, and Immunology, Robert Wood Johnson Medical School-University of Medicine and Dentistry of New Jersey
| | - Weifang Ling
- Department of Molecular Genetics, Microbiology, and Immunology, Robert Wood Johnson Medical School-University of Medicine and Dentistry of New Jersey
| | - Arthur I. Roberts
- Department of Molecular Genetics, Microbiology, and Immunology, Robert Wood Johnson Medical School-University of Medicine and Dentistry of New Jersey
| | - Anh D. Le
- Center for Craniofacial Molecular Biology, University of Southern California School of Dentistry, Los Angeles, CA 90033
| | - Songtao Shi
- Center for Craniofacial Molecular Biology, University of Southern California School of Dentistry, Los Angeles, CA 90033
| | - Changshun Shao
- Department of Genetics, Rutgers, The State University of New Jersey, Piscataway, NJ 08854
| | - Yufang Shi
- Department of Molecular Genetics, Microbiology, and Immunology, Robert Wood Johnson Medical School-University of Medicine and Dentistry of New Jersey
- Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences/Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Xia M, Li G, Ma J, Ling W. Phosphoinositide 3-kinase mediates CD40 ligand-induced oxidative stress and endothelial dysfunction via Rac1 and NADPH oxidase 2. J Thromb Haemost 2010; 8:397-406. [PMID: 19895673 DOI: 10.1111/j.1538-7836.2009.03683.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVES CD40 ligand (CD40L) has been implicated as an inducer of reactive oxygen species (ROS) generation in endothelial cells, but definitive evidence for this and the in vivo relevance haves not been demonstrated fully. We thus investigated whether phosphoinositide 3-kinase (PI3K) was linked to ROS generation and endothelial reactivity in response to CD40L. METHODS AND RESULTS CD40L treatment activated PI3K activity by regulating the association between PI3K p85 and the CD40 receptor. CD40L exposure also stimulated the GTPase Rac1, which is known to activate NADPH oxidases, and enhanced ROS formation, whereas PI3K inhibition or depletion by small interfering RNA (siRNA) prevented these responses. Subsequently, PI3K overexpression activated Rac1 and increased ROS generation. These responses were not observed in the presence of inactive Rac1 or siRNA against the NADPH oxidase subunit NOX2. Protein kinase Czeta mediates PI3K-regulated NADPH oxidase activation by promoting cellular p47phox translocation. Importantly, PI3K inhibition prevented CD40L-mediated ROS generation and endothelial dysfunction in a mouse model. In summary, PI3K mediates CD40L-induced ROS production and subsequent endothelial dysfunction. CONCLUSIONS Targeting PI3K may provide a new therapeutic approach in diseases associated with oxidative stress and endothelial dysfunction.
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Affiliation(s)
- M Xia
- Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou, China.
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Ren G, Su J, Zhang L, Zhao X, Ling W, L'huillie A, Zhang J, Lu Y, Roberts AI, Ji W, Zhang H, Rabson AB, Shi Y. Species variation in the mechanisms of mesenchymal stem cell-mediated immunosuppression. Stem Cells 2010; 27:1954-62. [PMID: 19544427 DOI: 10.1002/stem.118] [Citation(s) in RCA: 452] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Bone marrow-derived mesenchymal stem cells (MSCs) hold great promise for treating immune disorders because of their immunoregulatory capacity, but the mechanism remains controversial. As we show here, the mechanism of MSC-mediated immunosuppression varies among different species. Immunosuppression by human- or monkey-derived MSCs is mediated by indoleamine 2,3-dioxygenase (IDO), whereas mouse MSCs utilize nitric oxide, under the same culture conditions. When the expression of IDO and inducible nitric oxide synthase (iNOS) were examined in human and mouse MSCs after stimulation with their respective inflammatory cytokines, we found that human MSCs expressed extremely high levels of IDO, and very low levels of iNOS, whereas mouse MSCs expressed abundant iNOS and very little IDO. Immunosuppression by human MSCs was not intrinsic, but was induced by inflammatory cytokines and was chemokine-dependent, as it is in mouse. These findings provide critical information about the immunosuppression of MSCs and for better application of MSCs in treating immune disorders.
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Affiliation(s)
- Guangwen Ren
- Department of Molecular Genetics, Microbiology and Immunology, Robert Wood Johnson Medical School-University of Medicine and Dentistry of New Jersey, Piscataway, New Jersey, USA
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Chunli L, Yuee Y, Zhiming W, Shushen L, Zede G, Bing L, Ling J, Hong J, Ling W, Dan L, Zhongde D. Influence of humic substances on the migration of237Np,238Pu and241Am in a weak loess aquifer. RADIOCHIM ACTA 2009. [DOI: 10.1524/ract.2001.89.6.387] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The influence of humic substances on the migration of radionuclides237Np,238Pu and241Am in a weak loess aquifer was investigated in situ with bisectional experimental columns. The experimental columns were constructed by connecting two undisturbed aquifer medium columns together, and inserted into the aquifer horizontally through holes pre-prepared in the wall of a vertical Experimental Shaft in an Underground Research Facility at the CIRP´s field test site. Quartz containing radionuclides3H,237Np,238Pu and241Am was introduced as point source and plane source at the central parts of the experimental columns, respectively. Outflow water of the experimental columns were collected and3H in the outflows were analyzed for calculating the water flow velocity in the experimental columns. When the experiment was completed, the experimental columns were dismounted and cut into slices and the activities of237Np,238Pu and241Am in the sliced samples were determined.The water flow velocity in the point source experimental column and in the plane source experimental column was calculated as 1.15±0.05 cm/d and 1.06±0.05 cm/d, respectively. The concentration distribution of237Np,238Pu and241Am in the experimental columns indicate that, adjacent to the source, the concentration of each radionuclide is very large and decreases abruptly as the distance increases. In addition, some other high concentration regions/points were observed. This phenomenon may suggest that multiple species of these radionuclides with different mobility may exist in the in-situ aquifer condition. The calculated apparent distribution coefficients (Kd, ml/g) of the main specie of these radionuclides with and without additional humic substances are 8.90×101and 8.90×102for237Np, 1.93×102and 9.48×102for238Pu, 7.60×102and 9.79×102for241Am, respectively. These data suggest that the introduction of additional humic substances into the aquifer may enhance the mobility of237Np and238Pu, while it has no obvious influence on the migration of241Am.
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Chunli L, Zhiming W, Shushen L, Yuee Y, Hong J, Bing L, Ling J, Ling W, Dan L, Zhongde D, Zhiming G. The migration of radionuclides237Np,238Pu and241Am in a weak loess aquifer: A field column experiment. RADIOCHIM ACTA 2009. [DOI: 10.1524/ract.2001.89.8.519] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The migration of radionuclides237Np,238Pu and241Am in a weak loess aquifer were investigated in-situ with a bisectional experimental column. The experimental column was constructed by connecting 2 undisturbed aquifer medium columns together and inserted into the aquifer horizontally through holes pre-prepared in the wall of a vertical experimental shaft in an Underground Research Facility at the CIRP´s field test site. Quartz containing radionuclides3H,237Np,238Pu and241Am was introduced as a point source at the center of the experimental column. Outflow water of the experimental column was collected and3H in the outflow was determined for calculating the water flow velocity through the experimental column. The experimental column was cut into slices of 0.3 cm long and the radioactivity of237Np,238Pu and241Am in the sliced soil samples was analyzed when the experiment was completed.The water flow velocity in the experimental column was calculated as 1.15±0.05 cm/d. The activity distribution of237Np,238Pu and241Am in the experimental column indicate that each radionuclide has a very strong activity distribution region adjacent to the source introduction point and decreases abruptly as the distance increases. In addition there are other secondary activity distribution regions with different strength and widths. The calculated apparent distribution coefficients of the main specie of these radionuclides is (8.90±1.51)×102ml/g for237Np, (9.48±1.61)×102ml/g for238Pu and (9.79±1.66)×102ml/g for241Am.
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Ling W, Xia M, Yang Y. Abstract: P1393 ANTHOCYANIN SUPPLEMENTATION IMPROVES THE SERUM LDL-C AND HDL-C LEVELS ASSOCIATED WITH CETP INHIBITION IN DYSLIPIDEMIC SUBJECTS. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)71401-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Ren G, Zhang L, Su J, Zhao X, Ling W, Roberts AI, Shi Y. Species Variation in the Mechanisms of Mesenchymal Stem Cell-Mediated Immunosuppression (141.45). The Journal of Immunology 2009. [DOI: 10.4049/jimmunol.182.supp.141.45] [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] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
Bone marrow derived mesenchymal stem cells (MSCs) hold great promise for treating immune disorders, although the immunoregulatory mechanisms remain largely controversial. Here we show that the mechanisms of MSC-mediated immunosuppression vary in different species. Under the same culture conditions, immunosuppression by MSCs derived from human or monkey was mediated by indoleamine 2, 3 dioxygenase (IDO), while immunosuppression by mouse MSCs depended on nitric oxide (NO). When the expression levels of inducible nitric oxide synthase (iNOS) and IDO were examined in mouse and human MSCs stimulated with their respective inflammatory cytokines, we found that human MSCs expressed high levels of IDO, but very low levels of iNOS, while mouse MSCs expressed high levels of iNOS and very little IDO. Except the executor molecules, moreover, the human and mouse MSCs shared some similarities. Like in mouse MSCs, immunosuppression by human MSCs was not intrinsic, but inducible by inflammatory cytokines. Additionally, IDO-mediated immunosuppression by human MSCs is also chemokine-dependent. These findings help to explain the apparently conflicting reports in the literatures and provide critical information to allow better application of human MSCs in treating immune disorders.
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Affiliation(s)
- Guangwen Ren
- 1Department of Molecular Genetics, Microbiology and Immunology, Robert Wood Johnson Medical School-University of Medicine and Dentistry of New Jersey, Piscataway, NJ
| | - Liying Zhang
- 1Department of Molecular Genetics, Microbiology and Immunology, Robert Wood Johnson Medical School-University of Medicine and Dentistry of New Jersey, Piscataway, NJ
| | - Juanjuan Su
- 2Kunming Primate Research Center, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China, People's Republic of
| | - Xin Zhao
- 1Department of Molecular Genetics, Microbiology and Immunology, Robert Wood Johnson Medical School-University of Medicine and Dentistry of New Jersey, Piscataway, NJ
| | - Weifang Ling
- 1Department of Molecular Genetics, Microbiology and Immunology, Robert Wood Johnson Medical School-University of Medicine and Dentistry of New Jersey, Piscataway, NJ
| | - Arthur I Roberts
- 1Department of Molecular Genetics, Microbiology and Immunology, Robert Wood Johnson Medical School-University of Medicine and Dentistry of New Jersey, Piscataway, NJ
| | - Yufang Shi
- 1Department of Molecular Genetics, Microbiology and Immunology, Robert Wood Johnson Medical School-University of Medicine and Dentistry of New Jersey, Piscataway, NJ
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Zhu H, Ling W, Hu B, Su Y, Qiu S, Xiao W, Qi Y. Adenovirus E1A reverses the resistance of normal primary human lung fibroblast cells to TRAIL through DR5 upregulation and caspase 8-dependent pathway. Cancer Biol Ther 2006; 5:180-8. [PMID: 16357524 DOI: 10.4161/cbt.5.2.2332] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Expression of the adenovirus serotype 5 (Ad5) E1A enhances tumor cells to apoptosis by TNF-alpha, Fas-ligand and TNF-related apoptosis-inducing ligand (TRAIL). In this study, we found that E1A expression reversed the resistance of normal primary human lung fibroblast cells (P-HLF) to TRAIL-induced apoptosis. Furthermore, TRAIL dramatically induced apoptosis of P-HLF cells that expressed E1A following either infection with Ad-E1A or transfection with pcDNA3-E1A. Further results demonstrated that E1A specifically upregulated DR5 levels but had nearly no effect on the levels of DR4. E1A dramatically upregulated the exogenous TRAIL, and then increased a substantial amount of TRAIL on the surface of P-HLF cells treated with the expression vectors, both Ad-TRAIL and pIRES-EGFP-TRAIL. The dominant negative FADD mutation (FADD-DN) results revealed that the apoptosis in Ad-E1A and Ad-TRAIL coinfected P-HLF cells was completely blocked following inhibition of the death receptors-associated apoptosis-inducing molecules FADD. Moreover, the caspase 8 inhibitor (Z-IETD-FMK) could efficiently block caspase 8 activation and resulted in inhibition of caspase 3 activation and cleavage. However, The caspase 9 specific inhibitor (Z-LEHD-FMK) could not counteract the synergistic effect of TRAIL-induced apoptosis in combination with E1A, and caspase 3 activation and cleavage were not inhibited by Z-LEHD-FMK. Thus, our results suggest that adenovirus E1A sensitizes P-HLF cells to TRAIL-induced apoptosis involving DR5 upregulation and the caspase 8-dependent pathway. These findings provide the first direct evidence for molecular mechanisms of adenovirus E1A gene products to sensitize normal cells to TRAIL-mediated apoptosis.
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Affiliation(s)
- Huabin Zhu
- Laboratory of Molecular Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei Province, P. R. China
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Lohiya S, Dang J, Yang X, Shoptaw S, Ling W. 352 LONG-TERM OUTCOMES FOR PHARMACOLOGICAL AND BEHAVIORAL TREATMENTS FOR METHAMPHETAMINE ABUSE. J Investig Med 2006. [DOI: 10.2310/6650.2005.x0004.351] [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: 11/18/2022]
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Lohiya S, Dang J, Yang X, Shoptaw S, Ling W. Long-Term Outcomes for Pharmacological and Behavioral Treatments for Methamphetamine Abuse. J Investig Med 2006. [DOI: 10.1177/108155890605401s235] [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: 01/09/2023]
Affiliation(s)
- S. Lohiya
- David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - J. Dang
- David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - X. Yang
- David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - S. Shoptaw
- David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - W. Ling
- David Geffen School of Medicine at UCLA, Los Angeles, CA
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Ling W, Xia M, Hou M, Zhu H, Ma J. Th-P15:221 Anthocyanins induce cholesterol efflux from mouse peritoneal macrophages. ATHEROSCLEROSIS SUPP 2006. [DOI: 10.1016/s1567-5688(06)82180-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Hu B, Zhu H, Qiu S, Su Y, Ling W, Xiao W, Qi Y. Enhanced TRAIL sensitivity by E1A expression in human cancer and normal cell lines: inhibition by adenovirus E1B19K and E3 proteins. Biochem Biophys Res Commun 2005; 325:1153-62. [PMID: 15555548 DOI: 10.1016/j.bbrc.2004.10.154] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2004] [Indexed: 11/23/2022]
Abstract
TNF-related apoptosis-inducing ligand (TRAIL) is a member of the TNF superfamily of cytokines that induces apoptosis in a variety of cancer cells, but not in normal cells. However, more and more tumor cells remain resistant to TRAIL, which limited its application for cancer therapy. Expression of the adenovirus serotype 5 (Ad5) E1A sensitizes tumor cells to apoptosis by TNF-alpha, Fas-ligand, and TRAIL. Here we asked whether E1A overcomes this resistance and enhances TRAIL-induced apoptosis in the tumor cells. Our results revealed that the tumor cell lines, HeLa and HepG2, with infection by Ad-E1A, were highly sensitive to TRAIL-induced apoptosis. Importantly, we found that in normal primary human lung fibroblast cells (HLF) TRAIL is capable of inducing apoptosis in combination with E1A as efficiently as in some tumor cell lines. The adenovirus type 5 encoding proteins, E1B19K and E3 gene products, have been shown to inhibit E1A and TRAIL-induced apoptosis of HLF cells by using the recombinant adenovirus AdDeltaE1B55K, with mutation of E1B55K, containing E1B19K and complete E3 region. Further results demonstrated that the expression of DR5 and TRAIL was down-regulated in the AdDeltaE1B55K co-infected HLF cells. These findings suggest that TRAIL may play an important role in limiting virus infections and the ability of adenovirus to inhibit killing may prolong acute and persistent infections. The results from this study have also suggested the possibility that the combination of E1A with TRAIL could be used in the treatment of human malignancy, or in the selection of the optimal adenovirus mutant as effective delivering vector for cancer therapy.
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Affiliation(s)
- Baoli Hu
- Key Laboratory of Virology, Ministry of Education, College of Life Sciences, Wuhan University, 430072, Wuhan, Hubei Province, PR China
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Doverty M, White JM, Somogyi AA, Bochner F, Ali R, Ling W. Comment on: Doverty et al., Hyperalgesic responses in methadone maintenance patients (Pain 2001;90;91–6). Pain 2002. [DOI: 10.1016/s0304-3959(02)00311-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Abstract
BACKGROUND LAAM and methadone are both full mu opiate agonists and have been shown to reduce dependence on heroin when given continuously under supervised dosing conditions. LAAM has a long duration of action requiring dosing every two or three days compared to methadone which requires daily dosing. LAAM is not as widely available internationally as methadone, and may be withdrawn from the market following ten cases of life-threatening cardiac arrhythmias and an association with QT prolongation. OBJECTIVES To compare the efficacy and acceptability of LAAM maintenance with methadone maintenance in the treatment of heroin dependence. SEARCH STRATEGY We searched MEDLINE (January 1966 to August 2000), PsycINFO (1887 to August 2000), EMBASE (January 1985 to August 2000), and the Cochrane Controlled Trials Register (Issue 2 2000). In addition we hand searched NIDA monographs until August 2000 and searched reference lists of articles. SELECTION CRITERIA All randomised controlled trials, controlled clinical trials and controlled prospective studies comparing LAAM and methadone maintenance for the treatment of heroin dependence and measuring outcomes of efficacy or acceptability were included. DATA COLLECTION AND ANALYSIS Data on retention in treatment, heroin use, side-effects and mortality were collected by two reviewers independently. A meta-analysis was performed using RevMan. Discrepancies were resolved by consensus. MAIN RESULTS Eighteen studies, (15 RCTs, 3 Controlled prospective studies) met the inclusion criteria for the review. Three were excluded from the meta-analysis due to lack of data on retention, heroin use or mortality. Cessation of allocated medication (11 studies, 1473 participants) was greater with LAAM than with methadone, (RR 1.36, 95%CI 1.07-1.73, p=0.001, NNT=7.7 (or 8)). Non-abstinence was less with LAAM (5 studies, 983 participants; RR 0.81, 95%CI 0.72-0.91, p=0.0003, NNT=9.1 (or 10)). In 10 studies (1441 participants) there were 6 deaths from a range of causes, 5 in participants assigned to LAAM (RR 2.28 (95%CI 0.59-8.9, p=0.2). other relevant outcomes, such as quality of life and criminal activity could not be analysed because of lack of information in the primary studies. REVIEWER'S CONCLUSIONS LAAM appears more effective than methadone at reducing heroin use. More LAAM patients than methadone ceased their allocated medication during the studies, but many transferred to methadone and so the significance of this is unclear. There was no difference in safety observed, although there was not enough evidence to comment on uncommon adverse events.
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Affiliation(s)
- N Clark
- Turning Point Alcohol & Drug Centre, 54-62 Gertrude St, Fitzroy, Victoria, Australia, 3065.
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Abstract
Pre-clinical research implicates dopaminergic neurotransmission as critical in producing the effects of stimulants. Previous stimulant challenge studies using volunteers treated with dopaminergic antagonists have generally failed to demonstrate reduction of subjective effects. We performed this study to determine whether repeated dosing with risperidone reduced the subjective effects of experimentally administered cocaine. Nine non-treatment seeking hospitalized cocaine-dependent volunteers received 40 mg cocaine IV before and following 5 days of treatment with risperidone, 2 mg per day. Risperidone pre-treatment reduced the self-rated 'high' produced by cocaine. Repeated, rather than single, dosing with a D2 antagonist may be necessary to reduce the subjective effects produced by cocaine. The degree of D2 receptor blockade produced by risperidone appears to be greater than the reduction in euphoric effects produced by cocaine, suggesting that mechanisms other than those involving D2 receptors may be important in drug-induced euphoria.
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Affiliation(s)
- T F Newton
- Department of Psychiatry and Biobehavioral Sciences, UCLA School of Medicine, Los Angeles, CA 90024, USA.
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45
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Abstract
Patients on methadone maintenance therapy are relatively intolerant of pain, a finding hypothesized to reflect a hyperalgesic state induced by chronic opioid administration. To explore if the intrinsic activity of the opioid maintenance agent might affect expression of hyperalgesia in this population, withdrawal latency for cold-pressor (CP) pain was compared between small groups of methadone-maintained (n = 18), buprenorphine-maintained (n = 18), and matched control (n = 18) subjects. The opioid-maintained groups had equal and significantly shorter withdrawal latencies than controls, however it is possible that high rates of continued illicit opioid use precluded finding differences between methadone and buprenorphine groups. Differential effects of maintenance agent were found for the few subjects without illicit opioid use, such that withdrawal latencies for methadone-maintained (n = 5) were less than for buprenorphine-maintained (n = 7) which were less than controls (n = 18). Diminished pain tolerance in patients receiving opioid maintenance treatment has significant clinical implications. More research is needed to determine if buprenorphine offers advantages over methadone in this regard.
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Affiliation(s)
- P Compton
- School of Nursing, University of California at Los Angeles (UCLA), Factor Building 4-246, Box 956918, Los Angeles, CA 90095-6918, USA.
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Mattick RP, Ali R, Auriacombe M, Davoli M, Faggiano F, Farrell M, Ferri M, Ling W. Cochrane Drugs and Alcohol Group: the development of systematic reviews of treatment outcome. Alcohol Alcohol 2001; 36:109-11. [PMID: 11259206 DOI: 10.1093/alcalc/36.2.109] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
- The aim of the Cochrane Collaboration is to promote review processes which address all aspects of health care and which can be viewed by clinicians to guide their day-to-day clinical practice. Recently, a Cochrane review group on drugs and alcohol has been developed. The Cochrane Review Group Editorial base is in Rome, Italy. There is an international editorial board with editors in the UK, Italy, France, Australia and the USA. So far, the group has published five reviews addressing treatment for opioid, cocaine and alcohol dependence. Additional reviews and protocols are in progress. A growing number of titles are registered with the group. Interested readers and potential reviewers and/or referees can contact the Cochrane Drugs and Alcohol Group Coordinator in Rome at the e-mail address: dacochrane@asplazio.it
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Affiliation(s)
- R P Mattick
- Cochrane Drugs and Alcohol Group, Agenzia di Sanità Pubblica Regione Lazio, Via di Santa Costanza 53, 00198 Rome, Italy
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Abstract
Although there are increasing reports of methamphetamine use, studies examining the cognitive consequences of methamphetamine have not been performed on a population currently using the drug. To characterize this population, 65 people currently using MA regularly and 65 non-users were given a battery of cognitive tests. The battery included recall, recognition, Digit Symbol, Trail Making A & B, Stroop, Wisconsin Card Sort, backward digit span, and the FAS test of verbal fluency. The methamphetamine users were significantly more impaired on recall tasks, digit symbol, Stroop color words, and Trail Making B, but scores fell within the normal ranges on the other measures.
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Affiliation(s)
- S L Simon
- VA Medications Development Research Unit, Long Beach, Calif., USA.
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Ji J, Si L, Fang W, Ling W. Interferon-gamma inhibits in situ expression of PDGF-beta mRNA by smooth muscle cells in injured rabbit arteries after transluminal balloon angioplasty. Chin Med J (Engl) 2001; 114:139-42. [PMID: 11780193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
Abstract
OBJECTIVE To elucidate the mechanism of interferon-gamma (IFN-gamma) to inhibit the restenosis after successful percutaneous transluminal angioplasty (PTA). METHODS A rabbit vascular restenotic model was constructed and the proliferation of intimal smooth muscle cells (SMCs) were observed by monitoring their expression of proliferating cell nuclear antigen (PCNA) and platelet-derived growth factor beta chain mRNA (PDGF-beta mRNA) at the indicated time points. RESULTS IFN-gamma could significantly inhibit the expression of PCNA by intimal SMCs one week after denudation, when counting 200 intimal cells for PCNA-positive reactions with an inhibitory rate of 88.50% (P < 0.001). IFN-gamma could downregulate in situ expression of PDGF-beta mRNA by these cells as we calculated the average number of PDGF-beta mRNA positive cells per square millimetre area at x 400 magnification with reduced rates of 86.85% in 1 week group (P < 0.001), of 93.66% in 2 week group (P < 0.001) and of 52.92% in 4 week group (0.02 < P < 0.05), respectively. CONCLUSIONS The local production of PDGF-beta by vascular intimal SMCs via an autocrine mechanism may be responsible for continuous proliferation of these cells and the formation of neointima after injury. This could be inhibited by IFN-gamma through downregulating the expression of PDGF-beta mRNA. These results provide an in vivo basis for IFN-gamma to be used clinically for the management of restenosis after percutaneous transluminal angioplasty.
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MESH Headings
- Angioplasty, Balloon
- Animals
- Arteries/drug effects
- Arteries/injuries
- Arteries/metabolism
- Endothelium, Vascular/drug effects
- Endothelium, Vascular/injuries
- Endothelium, Vascular/metabolism
- Gene Expression Regulation/drug effects
- In Situ Hybridization
- Interferon-gamma/pharmacology
- Male
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/pathology
- Platelet-Derived Growth Factor/genetics
- Proliferating Cell Nuclear Antigen/biosynthesis
- RNA, Messenger/drug effects
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Rabbits
- Tunica Intima/drug effects
- Tunica Intima/metabolism
- Tunica Intima/pathology
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Affiliation(s)
- J Ji
- Shenzhen Sunyixian Cardiovascular Hospital, Shenzhen 518001, China
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Abstract
Opioid substitution treatment for dependence may alter sensitivity to pain. Previous studies on pain sensitivity in methadone maintenance patients have yielded contradictory results. This study compared nociceptive responses between 16 patients on stable, once daily, doses of methadone and 16 matched control subjects. Two types of nociceptive stimuli were used: (1) electrical stimulation; and (2) a cold pressor test. Two parameters were measured: detection for onset of pain, and pain tolerance. Methadone patients were tested over an inter-dosing period: at the time of trough plasma methadone concentration (0 h), and 3 h after their daily dose. Control subjects were tested twice 3 h apart. Blood samples were collected to determine plasma methadone concentration. In methadone patients, trough to peak increases in mean R-(-)- and S-(+)-methadone concentrations (118 and 138 ng/ml to 185 and 259 ng/ml, respectively) resulted in significant increases in pain detection and tolerance values for both nociceptive stimuli. Using electrical stimulation, methadone patients' pain tolerance values were lower than controls at 0 h, but higher than controls at 3 h; no significant differences in pain detection values were found. For the cold pressor test, methadone patients detected pain significantly earlier than controls at 0 h, and were also substantially less pain tolerant than controls at both 0 and 3 h. There were no significant differences in pain detection values between the two groups at 3 h. Pain tolerance to pain detection ratios for methadone patients were significantly lower than controls for the cold pressor test at 0 and 3 h, and for electrical stimulation at 0 h only. In summary, the relative pain sensitivity of methadone maintenance patients is determined by the nature of the nociceptive stimulus (e.g. cold pressor test versus electrical stimulation), the plasma methadone concentration (trough versus peak plasma concentration), and whether thresholds are determined for detection of pain or pain tolerance. Although responding to changes in plasma methadone concentration, maintenance patients are markedly hyperalgesic to pain induced by the cold pressor test.
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Affiliation(s)
- M Doverty
- Department of Clinical and Experimental Pharmacology, University of Adelaide, SA 5005, Adelaide, Australia.
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Abstract
OBJECTIVE To determine and compare select temporal-distance measures of stepping-in-place with gait ability in 2 age-matched groups. DESIGN Repeated measures, matched research design. SETTING Gait laboratory and hospital outpatient unit. PARTICIPANTS Convenience sample recruited from within the community and the outpatient unit of a local rehabilitation hospital included 30 healthy adults (age range, 58.1 +/- 10.8yr) and 30 age-matched adults with hemiplegia (age range, 58.6 +/- 10.3yr), secondary to a cerebrovascular accident. INTERVENTIONS Subjects were videotaped in the sagittal plane performing stepping-in-place and while walking. Select temporal-distance measures obtained by manual calculations from the video recordings were determined for 3 20-second trials of each activity. MAIN OUTCOME MEASURES Single limb support duration (SLSD) of the lower extremities (LEs) and step frequency during stepping-in-place and during gait. RESULTS A significant difference was found between the step frequency of each activity for the adults with hemiplegia (p <.05), but not for the healthy adults. A significant difference was also found between SLSD of the same LE across activities for each group (p <.05). SLSD of each LE during each individual activity, stepping-in-place, or gait, was not significantly different for the healthy adults, indicating LE symmetry; but it was significantly different for the adults with hemiplegia (p <.05), indicating LE asymmetry. CONCLUSIONS Stepping-in-place incorporates reciprocal, rhythmic LE movement patterns similar to gait. And, although SLSD of the LEs was different between the activities in both groups, each group showed similar LE movement patterns during each individual activity. In addition, step frequency was consistent between the activities for the healthy adults. These results seem to indicate that the reciprocal, rhythmic LE movement patterns, which are invoked during gait, may also be invoked during stepping-in-place. However, further research is needed to enhance the data related to stepping-in-place and gait ability in clinical populations.
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