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Effects of Xinfeng capsule on the Fas/FasL-mediated apoptotic pathway in patients with rheumatoid arthritis. J TRADIT CHIN MED 2018. [DOI: 10.1016/s0254-6272(18)30893-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Kharazmi S, Ataie Kachoie E, Behjatnia SAA. Cotton Leaf Curl Multan Betasatellite DNA as a Tool to Deliver and Express the Human B-Cell Lymphoma 2 (Bcl-2) Gene in Plants. Mol Biotechnol 2016; 58:362-72. [PMID: 27041273 DOI: 10.1007/s12033-016-9935-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The betasatellite DNA associated with Cotton leaf curl Multan virus (CLCuMB) contains a single complementary-sense ORF, βC1, which is a pathogenicity determinant. CLCuMB was able to replicate in plants in the presence of diverse helper geminiviruses, including Tomato leaf curl virus-Australia (TLCV-Au), Iranian isolate of Tomato yellow leaf curl virus (TYLCV-[Ab]), and Beet curly top virus (BCTV-Svr), and can be used as a plant gene delivery vector. To test the hypothesis that CLCuMB has the potential to act as an animal gene delivery vector, a specific insertion construct was produced by the introduction of a human B-cell lymphoma 2 (Bcl-2) cDNA into a mutant DNA of CLCuMB in which the βC1 was deleted (β∆C1). The recombinant βΔC1-Bcl-2 construct was successfully replicated in tomato and tobacco plants in the presence of TLCV-Au, BCTV-Svr and TYLCV-[Ab]. Real-time PCR and Western blot analyses of plants containing the replicative forms of recombinant βΔC1-Bcl-2 DNA showed that Bcl-2 gene was expressed in an acceptable level in these plants, indicating that β∆C1 can be used as a tool to deliver and express animal genes in plants. This CLCuMB-based system, having its own promoter activity, offers the possibility of production of animal recombinant proteins in plants.
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Affiliation(s)
- Sara Kharazmi
- Institute of Biotechnology, Shiraz University, Shiraz, Iran
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Lu CL, Xu J, Yao HJ, Luo KL, Li JM, Wu T, Wu GZ. Inhibition of human 67-kDa laminin receptor sensitizes multidrug resistance colon cancer cell line SW480 for apoptosis induction. Tumour Biol 2015; 37:1319-25. [PMID: 26293895 DOI: 10.1007/s13277-015-3873-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 07/30/2015] [Indexed: 11/26/2022] Open
Abstract
The adhesion mediated drug resistance in cancer cells resulted from adhesion of the extracellular matrix is a major cause for multidrug resistance (MDR) and leads chemotherapeutic failure for colon cancer. In this study, we explored the role of 67-kDa laminin receptor (67LR) in chemotherapeutic drug resistance in colon cancer cells. SiRNA-mediated knockdown of 67LR decreased the cell adhesion when laminins were applied. Moreover, 67LR knockdown increased the expression of pro-apoptotic gene Bax but inhibited the expression of anti-apoptotic gene Bcl-2. Enhanced apoptosis was observed in 67LR siRNA-transfected SW480 cell when the cell was treated with doxorubicin for apoptosis induction. Furthermore, MTT assay revealed that the IC50 of chemotherapeutic toward SW480 cell adhesion to laminins was reduced after 67LR knockdown, indicating there was a significant increase of drug sensitivity in SW480 cell. In conclusion, our study demonstrated that 67LR plays a considerable role in the development of colon cancer MDR.
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Affiliation(s)
- Chun-Lei Lu
- Department of Gastrointestinal Surgery, No. 101 Hospital of PLA, No. 101, Xingyuan Bei Road, Wuxi, Jiangsu, 214044, China.
| | - Jian Xu
- Department of Gastrointestinal Surgery, No. 101 Hospital of PLA, No. 101, Xingyuan Bei Road, Wuxi, Jiangsu, 214044, China
| | - Hao-Jie Yao
- Department of Gastrointestinal Surgery, No. 101 Hospital of PLA, No. 101, Xingyuan Bei Road, Wuxi, Jiangsu, 214044, China
| | - Kun-Lun Luo
- Department of Gastrointestinal Surgery, No. 101 Hospital of PLA, No. 101, Xingyuan Bei Road, Wuxi, Jiangsu, 214044, China
| | - Jie-Ming Li
- Department of Gastrointestinal Surgery, No. 101 Hospital of PLA, No. 101, Xingyuan Bei Road, Wuxi, Jiangsu, 214044, China
| | - Tao Wu
- Department of Gastrointestinal Surgery, No. 101 Hospital of PLA, No. 101, Xingyuan Bei Road, Wuxi, Jiangsu, 214044, China
| | - Guo-Zhong Wu
- Department of Gastrointestinal Surgery, No. 101 Hospital of PLA, No. 101, Xingyuan Bei Road, Wuxi, Jiangsu, 214044, China.
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Dittmar L, Mohr E, Kleist C, Ehser S, Demirdizen H, Sandra-Petrescu F, Hundemer M, Opelz G, Terness P. Immunosuppressive properties of mitomycin C-incubated human myeloid blood cells (MIC) in vitro. Hum Immunol 2015; 76:480-7. [PMID: 26074415 DOI: 10.1016/j.humimm.2015.06.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Revised: 04/01/2015] [Accepted: 06/02/2015] [Indexed: 10/23/2022]
Abstract
Previous animal studies showed that donor-derived blood cells treated with mitomycin C (MMC) prolong allograft survival when injected into recipients. This model was effective with whole blood, peripheral blood mononuclear cells (PBMC) (monocytes being the active cell subpopulation) or dendritic cells. In view of a potential clinical application, we study now the immunosuppressive properties of human myeloid cells in vitro. Mature dendritic cells (generated from naïve monocytes) or monocytes treated with mitomycin C do not or only weakly inhibit allogeneic T cells in vitro, whereas cells in an early differentiation state between monocytes and DC exert suppressive activity when treated with MMC. In contrast, DC generated from MMC-treated monocytes show the morphology and phenotype of early immature DC (iDC) and suppress T-cell responses. It is known that untreated monocytes injected into a recipient encounter a cytokine milieu which differentiates them to stimulatory DC. In our in vitro experiment MMC-treated monocytes cultured in a DC-maturing milieu transform themselves into suppressive early iDC. This reproduces a process which takes place when administering MMC-monocytes to a recipient. In conclusion, human MMC-DC or MMC-monocytes are not or only weakly suppressive in vitro. When MMC-monocytes are differentiated to DC the resulting cells become suppressive.
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Affiliation(s)
- Laura Dittmar
- Department of Transplantation Immunology, Institute for Immunology, University of Heidelberg, Im Neuenheimer Feld 305, 69120 Heidelberg, Germany.
| | - Elisabeth Mohr
- Department of Transplantation Immunology, Institute for Immunology, University of Heidelberg, Im Neuenheimer Feld 305, 69120 Heidelberg, Germany.
| | - Christian Kleist
- Department of Transplantation Immunology, Institute for Immunology, University of Heidelberg, Im Neuenheimer Feld 305, 69120 Heidelberg, Germany.
| | - Sandra Ehser
- Department of Transplantation Immunology, Institute for Immunology, University of Heidelberg, Im Neuenheimer Feld 305, 69120 Heidelberg, Germany.
| | - Haydar Demirdizen
- Department of Transplantation Immunology, Institute for Immunology, University of Heidelberg, Im Neuenheimer Feld 305, 69120 Heidelberg, Germany.
| | - Flavius Sandra-Petrescu
- Department of Transplantation Immunology, Institute for Immunology, University of Heidelberg, Im Neuenheimer Feld 305, 69120 Heidelberg, Germany.
| | - Michael Hundemer
- Department of Internal Medicine V, University of Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany.
| | - Gerhard Opelz
- Department of Transplantation Immunology, Institute for Immunology, University of Heidelberg, Im Neuenheimer Feld 305, 69120 Heidelberg, Germany.
| | - Peter Terness
- Department of Transplantation Immunology, Institute for Immunology, University of Heidelberg, Im Neuenheimer Feld 305, 69120 Heidelberg, Germany.
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Wang Y, Wang S, Cui W, He J, Wang Z, Yang X. Olive leaf extract inhibits lead poisoning-induced brain injury. Neural Regen Res 2014; 8:2021-9. [PMID: 25206510 PMCID: PMC4146066 DOI: 10.3969/j.issn.1673-5374.2013.22.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Accepted: 07/27/2013] [Indexed: 11/18/2022] Open
Abstract
Olive leaves have an antioxidant capacity, and olive leaf extract can protect the blood, spleen and hippocampus in lead-poisoned mice. However, little is known about the effects of olive leaf extract on lead-induced brain injury. This study was designed to determine whether olive leaf extract can inhibit lead-induced brain injury, and whether this effect is associated with antioxidant capacity. First, we established a mouse model of lead poisoning by continuous intragastric administration of lead acetate for 30 days. Two hours after successful model establishment, lead-poisoned mice were given olive leaf extract at doses of 250, 500 or 1 000 mg/kg daily by intragastric administration for 50 days. Under the transmission electron microscope, olive leaf extract attenuated neuronal and capillary injury and reduced damage to organelles and the matrix around the capillaries in the frontal lobe of the cerebral cortex in the lead-poisoned mice. Olive leaf extract at a dose of 1 000 mg/kg had the greatest protective effect. Spectrophotometry showed that olive leaf extract significantly increased the activities of superoxide dismutase, catalase, alkaline phosphatase and acid phosphatase, while it reduced malondialdehyde content, in a dose-dependent manner. Furthermore, immunohistochemical staining revealed that olive leaf extract dose-dependently decreased Bax protein expression in the cerebral cortex of lead-poisoned mice. Our findings indicate that olive leaf extract can inhibit lead-induced brain injury by increasing antioxidant capacity and reducing apoptosis.
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Affiliation(s)
- Yu Wang
- Department of Biology and Chemistry, Longnan Teachers College, Chengxian 742500, Gansu Province, China
| | - Shengqing Wang
- Department of Biology and Chemistry, Longnan Teachers College, Chengxian 742500, Gansu Province, China
| | - Wenhui Cui
- Department of Biology and Chemistry, Longnan Teachers College, Chengxian 742500, Gansu Province, China
| | - Jiujun He
- Department of Biology and Chemistry, Longnan Teachers College, Chengxian 742500, Gansu Province, China
| | - Zhenfu Wang
- Department of Biology and Chemistry, Longnan Teachers College, Chengxian 742500, Gansu Province, China
| | - Xiaolu Yang
- Department of Biology and Chemistry, Longnan Teachers College, Chengxian 742500, Gansu Province, China
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Wang YZ, Tian FF, Yan M, Zhang JM, Liu Q, Lu JY, Zhou WB, Yang H, Li J. Delivery of an miR155 inhibitor by anti-CD20 single-chain antibody into B cells reduces the acetylcholine receptor-specific autoantibodies and ameliorates experimental autoimmune myasthenia gravis. Clin Exp Immunol 2014; 176:207-21. [PMID: 24387321 DOI: 10.1111/cei.12265] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/28/2013] [Indexed: 11/28/2022] Open
Abstract
MicroRNA-155 (miR155) is required for antibody production after vaccination with attenuated Salmonella. miR155-deficient B cells generated reduced germinal centre responses and failed to produce high-affinity immunoglobulin (Ig)G1 antibodies. In this study, we observed up-regulation of miR155 in the peripheral blood mononuclear cells (PBMCs) of patients with myasthenia gravis (MG), and miR155 was also up-regulated in torpedo acetylcholine receptor (T-AChR)-stimulated B cells. We used an inhibitor of miR155 conjugated to anti-CD20 single-chain antibody to treat both the cultured B cells and the experimental autoimmune MG (EAMG) mice. Our results demonstrated that silencing of miR155 by its inhibitor impaired the B cell-activating factor (BAFF)-R-related signalling pathway and reduced the translocation of nuclear factor (NF)-κB into the nucleus. Additionally, AChR-specific autoantibodies were reduced, which may be related to the altered amounts of marginal zone B cells and memory B cells in the spleens of EAMG mice. Our study suggests that miR155 may be a promising target for the clinical therapy of MG.
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Affiliation(s)
- Y-Z Wang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
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Mevorach D, Zuckerman T, Reiner I, Shimoni A, Samuel S, Nagler A, Rowe JM, Or R. Single infusion of donor mononuclear early apoptotic cells as prophylaxis for graft-versus-host disease in myeloablative HLA-matched allogeneic bone marrow transplantation: a phase I/IIa clinical trial. Biol Blood Marrow Transplant 2013; 20:58-65. [PMID: 24140121 DOI: 10.1016/j.bbmt.2013.10.010] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Accepted: 10/08/2013] [Indexed: 12/20/2022]
Abstract
Because of its potent immunomodulatory effect, an infusion of donor mononuclear early apoptotic cells (ApoCell) was tested in addition to cyclosporine and methotrexate as prophylaxis for acute graft-versus-host disease (GVHD) after HLA-matched myeloablative allogeneic hematopoietic stem cell transplantation (HSCT) from a related donor. In a phase I/IIa clinical trial, we treated 13 patients (median age, 37 years; range, 20 to 59 years) with hematologic malignancies: 7 patients with acute lymphoblastic leukemia, 5 patients with acute myeloid leukemia, and 1 patient with chronic myeloid leukemia, who received conventional myeloablative conditioning, with 35, 70, 140, or 210 × 10(6) cell/kg of donor ApoCell, on day -1 of transplantation. Engraftment was successful in all patients with median time to neutrophil recovery of 13 days (range, 11 to 19), and platelet recovery of 15 days (range, 11 to 59). Serious adverse effects were reported on 10 occasions in the trial, all of which were considered unrelated (n = 7) or unlikely to be related (n = 3) to ApoCell infusion. The nonrelapse mortality at day 100 and 180 after transplantation was 7.7% and the overall survival at 100 and 180 days after transplantation was 92% and 85%, respectively. All ApoCell preparations showed an in vitro significant tolerogenic effect upon interaction with dendritic cells. The overall incidence of acute grades II to IV GVHD was 23%, whereas among those receiving the 2 higher doses (n = 6), the rate was 0%. These results suggest that a single infusion of donor ApoCell in HLA-matched allogeneic HSCT is a safe and potentially effective prophylaxis for acute GVHD occurring after myeloablative conditioning. No dose limiting toxicity was observed. (Clinicaltrials.gov no. NCT00524784).
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Affiliation(s)
- Dror Mevorach
- The Rheumatology Research Center, Hadassah-Hebrew University Medical Center, Jerusalem, Israel.
| | - Tsila Zuckerman
- Department of Hematology and Bone Marrow Transplantation, Rambam Medical Center, Haifa, Israel
| | - Inna Reiner
- The Rheumatology Research Center, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Avichai Shimoni
- Division of Hematology and Bone Marrow Transplantation, Chaim Sheba Medical Center, Tel-Hashomer, Israel
| | - Simcha Samuel
- Department of Bone Marrow Transplantation and Cancer Immunotherapy, Hadassah University Medical Center, Jerusalem, Israel
| | - Arnon Nagler
- Division of Hematology and Bone Marrow Transplantation, Chaim Sheba Medical Center, Tel-Hashomer, Israel
| | - Jacob M Rowe
- Department of Hematology, Shaare Zedek, Jerusalem, Israel
| | - Reuven Or
- Department of Bone Marrow Transplantation and Cancer Immunotherapy, Hadassah University Medical Center, Jerusalem, Israel
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Griffith TS, Ferguson TA. Cell death in the maintenance and abrogation of tolerance: the five Ws of dying cells. Immunity 2011; 35:456-66. [PMID: 22035838 DOI: 10.1016/j.immuni.2011.08.011] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2011] [Revised: 08/11/2011] [Accepted: 08/29/2011] [Indexed: 02/07/2023]
Abstract
The mammalian immune system continually faces death in the form of its own dead and dying cells that arise during normal tissue turnover, infections, cellular damage, and cancer. Complex decisions must then be made that will permit a protective response to pathogens, while at the same time destroying tumors but not attacking vital systems of the host that could lead to autoimmunity. By using an investigative technique termed the five Ws (who, what, when, where, and why), we will examine how the immune system responds to antigens generated via cell death. This analysis will give us a better understanding of the molecular differences fundamental to tolerogenic or immunogenic cell death, the cells that sense and react to the dead cells, and the consequences of these fundamental elements on the maintenance or abrogation of tolerance.
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Affiliation(s)
- Thomas S Griffith
- Department of Urology, University of Minnesota, Minneapolis, MN 55455, USA.
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ZHOU H, CHEN ZH, XING ZS, WANG G, LUO ZG, QIN GQ, LI JJ, QIAN K, JIANG HT, WANG F, WANG Y, LIAO DF. Dendritic Cells Genetically Engineered to Express Fas Ligand Regulate T Lymphocyte Proliferation and Apoptosis*. PROG BIOCHEM BIOPHYS 2011. [DOI: 10.3724/sp.j.1206.2010.00222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ziaei A, Ramezani M, Wright L, Paetz C, Schneider B, Amirghofran Z. Identification of spathulenol in Salvia mirzayanii
and the immunomodulatory effects. Phytother Res 2010; 25:557-62. [DOI: 10.1002/ptr.3289] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2010] [Revised: 08/01/2010] [Accepted: 08/02/2010] [Indexed: 12/13/2022]
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Ren G, Su J, Zhao X, Zhang L, Zhang J, Roberts AI, Zhang H, Das G, Shi Y. Apoptotic cells induce immunosuppression through dendritic cells: critical roles of IFN-gamma and nitric oxide. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2008; 181:3277-84. [PMID: 18713999 DOI: 10.4049/jimmunol.181.5.3277] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Apoptotic cells induce immunosuppression through unknown mechanisms. To identify the underlying molecular mediators, we examined how apoptotic cells induce immunoregulation by dendritic cells (DC). We found that administration of DC exposed to apoptotic cells (DC(ap)) strongly inhibited the expansion of lymphocytes in draining lymph nodes in vivo and the subsequent Ag-specific activation of these lymphocytes ex vivo. Unexpectedly, DC(ap) supported T cell activation to a similar extent as normal DC in vitro, leading to proliferation and IL-2 production, except that DC(ap) did not support T cell production of IFN-gamma. Surprisingly, when DC(ap) were cocultured with normal DC, they completely lost their ability to support T cell activation, an effect reversed by anti-IFN-gamma or inhibitors of inducible NO synthase (iNOS). As expected, exposure to apoptotic cells rendered DC(ap) capable of producing much more NO in response to exogenous IFN-gamma than normal DC. Furthermore, DC(ap) from iNOS(-/-) or IFN-gammaR1(-/-) mice were not inhibitory in vitro or in vivo. Therefore, the IFN-gamma-induced production of NO by apoptotic cell-sensitized DC plays a key role in apoptotic cell-mediated immunosuppression.
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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, NJ 08854, USA
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