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Jubala CM, Lamerato-Kozicki AR, Borakove M, Lang J, Gardner LA, Coffey D, Helm KM, Schaack J, Baier M, Cutter GR, Bellgrau D, Modiano JF. MHC-dependent desensitization of intrinsic anti-self reactivity. Cancer Immunol Immunother 2009; 58:171-85. [PMID: 18523772 PMCID: PMC2585149 DOI: 10.1007/s00262-008-0535-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2008] [Accepted: 05/12/2008] [Indexed: 10/22/2022]
Abstract
The survival of naive T cells is compromised in the absence of molecules encoded by the major histocompatibility complex (MHC) while antigen-experienced T cells survive. We hypothesized that survival pressures in an in vivo, MHC-deficient environment would permit enrichment of less frequent antigen-experienced autoreactive cells at the expense of the majority of antigen naive T cells. To test this hypothesis, we generated MHC class I- and class II-deficient mice in NOD and C57Bl/6 (B6) backgrounds, and examined the capacity of adoptively transferred autoimmune-prone NOD T cells, or non-autoimmune prone naive B6 T cells, respectively, to reject transplanted wild-type pancreatic islets or transplantable tumors in the MHC-deficient mice. In the MHC-deficient environment, CD4 T cells acquired self-hostile properties (islet rejection and tumor invasion) that were independent from their genetic propensity for autoreactivity, while CD8 T cells required appropriate prior exposure to antigen in order to survive and function (reject tumor) in this environment; however, disengagement of Tob1, a negative regulator of proliferation, led to a reverse phenotype with regard to persistence of CD4 and CD8 T cells in the MHC-deficient environment. Our data suggest that self-peptide/MHC interactions have dual roles to facilitate survival and restrain autoreactivity, thus acting as integral components of an intrinsic network of negative regulation that maintains tolerance.
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Affiliation(s)
| | - Angela R. Lamerato-Kozicki
- University of Colorado Cancer Center, Aurora, CO USA
- Integrated Department of Immunology, University of Colorado, Denver, CO USA
- Present Address: Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI USA
| | - Michelle Borakove
- Integrated Department of Immunology, University of Colorado, Denver, CO USA
| | - Julie Lang
- Integrated Department of Immunology, University of Colorado, Denver, CO USA
| | | | - David Coffey
- Integrated Department of Immunology, University of Colorado, Denver, CO USA
| | - Karen M. Helm
- University of Colorado Cancer Center, Aurora, CO USA
| | - Jerome Schaack
- University of Colorado Cancer Center, Aurora, CO USA
- Department of Microbiology, University of Colorado, Denver, CO USA
| | - Monika Baier
- Department of Biostatistics, University of Alabama at Birmingham, Birmingham, AL USA
- Present Address: Clinical & Regulatory Affairs/Biometrics Department Biostatistician, Novartis Pharma GmbH, Roonstrasse 25, 90429 Nuernberg, Germany
| | - Gary R. Cutter
- Department of Biostatistics, University of Alabama at Birmingham, Birmingham, AL USA
| | - Donald Bellgrau
- University of Colorado Cancer Center, Aurora, CO USA
- Integrated Department of Immunology, University of Colorado, Denver, CO USA
- Integrated Department of Immunology, National Jewish Medical and Research Center, 1400 Jackson St. K503, Denver, CO 80206 USA
| | - Jaime F. Modiano
- University of Colorado Cancer Center, Aurora, CO USA
- Integrated Department of Immunology, University of Colorado, Denver, CO USA
- Department of Veterinary Clinical Sciences and Masonic Cancer Center, University of Minnesota, 455 VMC MMC6194, 1365 Gortner Avenue, St. Paul, MN 55108 USA
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Lee SH, Mizutani N, Mizutani M, Luo Y, Zhou H, Kaplan C, Kim SW, Xiang R, Reisfeld RA. Endoglin (CD105) is a target for an oral DNA vaccine against breast cancer. Cancer Immunol Immunother 2006; 55:1565-74. [PMID: 16565828 PMCID: PMC11030801 DOI: 10.1007/s00262-006-0155-5] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2005] [Accepted: 03/06/2006] [Indexed: 10/24/2022]
Abstract
Endoglin (CD105), a co-receptor in the TGF-beta receptor complex, is over-expressed on proliferating endothelial cells in the breast tumor neovasculature and thus offers an attractive target for anti-angiogenic therapy. Here we report the anti-angiogenic/anti-tumor effects achieved in a prophylactic setting with an oral DNA vaccine encoding murine endoglin, carried by double attenuated Salmonella typhimurium (dam-, AroA-) to a secondary lymphoid organ, i.e., Peyer's patches . We demonstrate that an endoglin vaccine elicited activation of antigen-presenting dendritic cells, coupled with immune responses mediated by CD8+ T cells against endoglin-positive target cells. Moreover, we observed suppression of angiogenesis only in mice administered with the endoglin vaccine as compared to controls. These data suggest that a CD8+ T cell-mediated immune response induced by this vaccine effectively suppressed dissemination of pulmonary metastases of D2F2 breast carcinoma cells presumably by eliminating proliferating endothelial cells in the tumor vasculature. It is anticipated that vaccine strategies such as this may contribute to future therapies for breast cancer.
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Affiliation(s)
- Sung-Hyung Lee
- Department of Immunology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037 USA
| | - Noriko Mizutani
- Department of Immunology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037 USA
| | - Masato Mizutani
- Department of Immunology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037 USA
| | - Yunping Luo
- Department of Immunology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037 USA
| | - He Zhou
- Department of Immunology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037 USA
| | - Charles Kaplan
- Department of Immunology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037 USA
| | - Sung-Woo Kim
- Department of Immunology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037 USA
| | - Rong Xiang
- Department of Immunology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037 USA
| | - Ralph A. Reisfeld
- Department of Immunology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037 USA
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Zheng SY, Li DC, Zhang ZD, Zhao J, Ge JF. Anti-gastric cancer active immunity induced by FasL/B7-1 gene-modified tumor cells. World J Gastroenterol 2005; 11:3204-11. [PMID: 15929168 PMCID: PMC4316049 DOI: 10.3748/wjg.v11.i21.3204] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To study the activation of cytotoxic T lymphocytes (CTLs) against gastric cancer cells induced by FasL/B7-1 (FB-11) gene-modified tumor cells, and to explore whether co-expression of FasL and B7-1 in SGC-7901 tumor cells could initiate synergistic antitumor effect.
METHODS: FasL and B7-1 genes were transfected into human SGC-7901 gastric cancer cells with adenovirus vectors. The positive clones were selected by G418. FasL and B7-1 genes were detected by flow cytometry and RT-PCR. Abdominal infiltrating lymphocytes and sensitized spleen cells were obtained from mice that were immunized with SGC-7901/FB-11 or wild type SGC-7901 cells intraperitoneally, and cytotoxicity of these CTLs against tumor cells was determined by MTT assay.
RESULTS: Flow cytometry and RT-PCR showed that FasL and B7-1 genes were highly expressed. FasL and B7-1 transfected cancer cells had a high apoptosis index. DNA laddering suggested that FasL and B7-1 genes induced gastric cancer cell apoptosis. FasL+/B7-1+SGC-7901 cells (SGC-7901/FB-11) were inoculated subcutaneously in the dorsal skin of C57BL/6 mice and then decreased their tumorigenicity greatly (z = 2.15-46.10, P<0.01). SGC-7901/FB-11 cell-sensitized mice obtained protective immune activity against the rechallenge of wild type SGC-7901 cells (z = 2.06-44.30, P<0.05). The cytotoxicity of CTLs induced by SGC-7901/FB-11 cells against SGC-7901 was significantly higher than that of CTLs activated by wild-type SGC-7901 cells (84.1±2.4% vs 30.5±2.3%, P<0.05).
CONCLUSION: FasL and B7-1 genes can effectively promote the activity of CTLs against gastric cancer cells. FasL/B7-1 molecules play an important role in CTL cytotoxicity.
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Affiliation(s)
- Shi-Ying Zheng
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Suzhou University, Suzhou 215006, Jiangsu Province, China. syzheng88@ sina.com
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