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Peng Y, Luo G, Zhou J, Wang X, Hu J, Cui Y, Li XC, Tan J, Yang S, Zhan R, Yang J, He W, Wu J. CD86 is an activation receptor for NK cell cytotoxicity against tumor cells. PLoS One 2013; 8:e83913. [PMID: 24349559 PMCID: PMC3859666 DOI: 10.1371/journal.pone.0083913] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Accepted: 11/10/2013] [Indexed: 01/17/2023] Open
Abstract
CTLA4Ig has been successfully used in the clinic for suppression of T cell activation. However, patients treated with CTLA4Ig experienced reduced incidence of tumors than predicted, but the underlying mechanism remains unknown. In this paper, we showed that brief administration of CTLA4Ig significantly reduced tumor metastasis and prolonged the survival of host mice bearing B16 melanoma. Depletion of NK cells prior to CTLA4Ig administration eliminated the CTLA4Ig-mediated anti-tumor activity. CTLA4Ig enhanced NK cell cytotoxicity to tumor cells via up-regulation of NK cell effecter molecules CD107a and perforin in vivo. In addition, we demonstrated that, upon activation, NK cells could significantly increase the expression of CD86 both in vitro and in vivo, and ligation of CD86 with CTLA4Ig significantly increased the ability of NK cells to kill tumor cells. Furthermore, a human NK cell line that expressed high level of CD86 was directly activated by CTLA4Ig so that killing of tumor targets was enhanced; this enhanced killing could be inhibited by blocking CD86. Our findings uncover a novel function of CTLA4Ig in tumor immunity and suggest that CD86 on NK cells is an activating receptor and closely involved in the CTLA4Ig-mediated anti-tumor response.
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MESH Headings
- Abatacept
- Animals
- B7-2 Antigen/genetics
- B7-2 Antigen/immunology
- Cell Line, Tumor
- Humans
- Immunity, Cellular/drug effects
- Immunity, Cellular/genetics
- Immunoconjugates/pharmacology
- Immunosuppressive Agents/pharmacology
- Killer Cells, Natural/immunology
- Killer Cells, Natural/pathology
- Lymphocyte Activation/drug effects
- Lymphocyte Activation/genetics
- Lysosomal Membrane Proteins/genetics
- Lysosomal Membrane Proteins/immunology
- Melanoma/drug therapy
- Melanoma/genetics
- Melanoma/immunology
- Melanoma/pathology
- Mice
- Mice, SCID
- Neoplasms, Experimental/drug therapy
- Neoplasms, Experimental/genetics
- Neoplasms, Experimental/immunology
- Neoplasms, Experimental/pathology
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Affiliation(s)
- Yanmeng Peng
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory for Disease, Proteomics, Chongqing, China
| | - Gaoxing Luo
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory for Disease, Proteomics, Chongqing, China
| | - Junyi Zhou
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory for Disease, Proteomics, Chongqing, China
| | - Xiaojuan Wang
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory for Disease, Proteomics, Chongqing, China
| | - Jie Hu
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory for Disease, Proteomics, Chongqing, China
| | - Yanyan Cui
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory for Disease, Proteomics, Chongqing, China
| | - Xian C. Li
- Center for Immunobiology Research, Transplant Immunology Program, Houston Methodist Hospital, Houston, Texas, United States of America
| | - Jianglin Tan
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory for Disease, Proteomics, Chongqing, China
| | - Sisi Yang
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory for Disease, Proteomics, Chongqing, China
| | - Rixing Zhan
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory for Disease, Proteomics, Chongqing, China
| | - Junjie Yang
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory for Disease, Proteomics, Chongqing, China
| | - Weifeng He
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory for Disease, Proteomics, Chongqing, China
| | - Jun Wu
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory for Disease, Proteomics, Chongqing, China
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Gorczynski RM, Chen Z, Fu XM, Zeng H. Increased expression of the novel molecule OX-2 is involved in prolongation of murine renal allograft survival. Transplantation 1998; 65:1106-14. [PMID: 9583873 DOI: 10.1097/00007890-199804270-00016] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Portal venous (p.v.) peritransplant immunization with dendritic cells from bone marrow cultures, along with cyclosporine (10 mg/kg), produces antigen-specific increased renal allograft survival compared with recipients receiving intravenous (i.v.) immunization. Increased survival is associated with altered cytokine production from recipient T cells restimulated with donor antigen. We used a suppressive subtractive hybridization approach to explore a role in the regulation of transplant rejection for other genes differentially expressed after p.v. immunization. METHODS Subtractive hybridization was performed using tissue from p.v. and i.v. immunized mice and a novel polymerase chain reaction-based approach. A gene-bank search was used to identify the source of the differentially expressed cDNAs. One product, the mouse homologue of rat OX-2, was further analyzed using Western gels and FACS analysis of dendritic cells (NLDC145+) isolated from p.v.-immunized mice. RESULTS Eighty cDNA clones were obtained by suppressive subtractive hybridization. Differential expression was confirmed in Northern RNA blots. One clone showed sequence homology to a gene encoding a molecule on rat dendritic cells (MRC OX-2), with homology to genes encoding the costimulatory molecules CD80 (B7-1) and CD86 (B7-2). In p.v.-immunized mice, a monoclonal antibody to the rat OX-2 molecule identified, by Western blot analysis, increased expression of a molecule with molecular weight (43 kDa) analogous to rat MRC-OX-2; labels (by FACS analysis) indentified increased numbers of a population of cells staining with NLDC145; and blocks indentified increased graft survival. CONCLUSION Our data suggest that OX-2 is functionally important in the increased graft survival seen in p.v.-immunized mice receiving renal allografts.
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MESH Headings
- Animals
- Antibodies, Monoclonal
- Antigens, CD
- Antigens, Surface/analysis
- Antigens, Surface/biosynthesis
- Antigens, Surface/genetics
- Base Sequence
- Bone Marrow Cells/cytology
- Bone Marrow Cells/immunology
- Cloning, Molecular
- Cytokines/biosynthesis
- DNA Primers
- DNA, Complementary
- Dendritic Cells/immunology
- Dendritic Cells/transplantation
- Graft Survival/immunology
- Humans
- Immunosuppression Therapy/methods
- In Situ Hybridization
- Isoantigens/immunology
- Kidney Transplantation/immunology
- Membrane Glycoproteins/biosynthesis
- Mice
- Mice, Inbred C3H
- Mice, Inbred C57BL
- Molecular Sequence Data
- Polymerase Chain Reaction
- Portal Vein/immunology
- Rats
- Sequence Alignment
- Sequence Homology, Nucleic Acid
- T-Lymphocytes/immunology
- Time Factors
- Transplantation, Homologous
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Affiliation(s)
- R M Gorczynski
- The Toronto Hospital, Department of Surgery and Immunology, University of Toronto, Ontario, Canada
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Gorczynski RM, Fu XM, Issekutz T, Cohen Z. Differential regulation of rejection of small intestinal and skin allografts in rats by injection of antibodies to ICAM-1 or the integrins alpha 4, alpha L, or beta 2. Cell Immunol 1998; 184:74-82. [PMID: 9626338 DOI: 10.1006/cimm.1998.1260] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Female Lewis (LEW) rats received orthotopic small intestinal transplantation (SIT), or tail skin grafts from female (Lewis x Brown Norway)F1 (LBNF1) rats, along with peritransplant portal venous (pv) infusion of LBNF1 bone marrow-derived dendritic cells derived from male donors. All animals received im injection with cyclosporin A (5 mg/kg) for 3 consecutive days following transplantation. In some cases rats received intravenous injections, at 2-day intervals, with 1 mg of monoclonal antibodies to ICAM-1 or the integrins alpha 4, alpha L, or beta 2, or combinations of these reagents. Cells were harvested from the recipient rats at different times posttransplantation, and single cell suspensions were analyzed by FACS for expression of CD3+, CD4+, CD8+, alpha beta TcR+, and gamma delta TcR+ cells. Other tissue samples were used for histopathological assessment of rejection. We also investigated donor-specific and third-party (Wistar-Furth, Wi) restimulation of host lymphocytes from MLN, PLN, and PP for production of different cytokines in vitro. Of the various antibodies tested, only anti-alpha 4, but not anti-alpha L, -beta 2, nor -ICAM-1 led to further increased graft survival of LBNF1 SIT beyond that seen with pv-infused cells alone (30 days vs 19 days), while the combination of anti-alpha L (or beta 2) and ICAM-1 produced further significantly increased survival of skin grafts (30 days vs 21 days). For both SIT and skin-grafted animals increased graft survival was associated with decreased production of IL-2 and IFN-gamma and increased production of IL-4 and IL-10 from tissues local to the graft (PP and draining LN, respectively), with less significant alterations in tissues distant to the graft (PLN for SIT, and MLN for skin grafts). While, as reported previously, pv-immunized SIT rats showed increased gamma delta TCR+ cells within the SIT in association with increased graft survival, treatment with anti-alpha 4 diminished this increase in gamma delta TCR+ cells, while simultaneously increasing SIT survival. Nevertheless, the bias toward increased IL-10 production, and decreased IFN-gamma production, from cells of animals showing increased survival was maintained. These data suggest that local graft infiltration with gamma delta TCR+ cells following pv immunization is not necessary for prolongation of survival in this model system, although functional changes in the local cytokines milieu may be important.
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MESH Headings
- Animals
- Antibodies, Monoclonal/immunology
- Antigens, CD/physiology
- CD18 Antigens/physiology
- Cytokines/biosynthesis
- Female
- Graft Rejection
- Integrin alpha4
- Intercellular Adhesion Molecule-1/physiology
- Intestine, Small/transplantation
- Lymphocyte Function-Associated Antigen-1/physiology
- Male
- Rats
- Rats, Inbred BN
- Rats, Inbred Lew
- Rats, Wistar
- Receptors, Antigen, T-Cell, gamma-delta/physiology
- Skin Transplantation/immunology
- Transplantation, Homologous
- Vascular Cell Adhesion Molecule-1/physiology
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Affiliation(s)
- R M Gorczynski
- Department of Surgery, University of Toronto Transplant Research, Ontario, Canada
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