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Miyahara Y, Khattar M, Schroder PM, Mierzejewska B, Deng R, Han R, Hancock W, Chen W, Stepkowski SM. Anti-TCRβ mAb induces long-term allograft survival by reducing antigen-reactive T cells and sparing regulatory T cells. Am J Transplant 2012; 12:1409-18. [PMID: 22420295 PMCID: PMC3365620 DOI: 10.1111/j.1600-6143.2012.04006.x] [Citation(s) in RCA: 17] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
TCR specific antibodies may modulate the TCR engagement with antigen-MHC complexes, and in turn regulate in vivo T cell responses to alloantigens. Herein, we found that in vivo administration of mAbs specific for mouse TCRβ (H57-597), TCRα or CD3 promptly reduced the number of CD4(+) and CD8(+) T cells in normal mice, but H57-597 mAb most potently increased the frequency of CD4(+) Foxp3(+) Treg cells. When mice were injected with staphylococcal enterotoxin B (SEB) superantigen and H57-597 mAb, the expansion of SEB-reactive Vβ8(+) T cells was completely abrogated while SEB-nonreactive Vβ2(+) T cells remained unaffected. More importantly, transient H57-597 mAb treatment exerted long-lasting effect in preventing T cell responses to alloantigens, and produced long-term cardiac allograft survival (>100 days) in 10 out of 11 recipients. While Treg cells were involved in maintaining donor-specific long-term graft survival, T cell homeostasis recovered over time and immunity was retained against third party allografts. Moreover, transient H57-597 mAb treatment significantly prolonged survival of skin allografts in naïve recipients as well as heart allografts in skin-sensitized recipients. Thus, transient modulation of the TCRβ chain by H57-597 mAb exhibits potent, long-lasting therapeutic effects to control alloimmune responses.
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Affiliation(s)
- Y. Miyahara
- Department of Medical Microbiology and Immunology, University of Toledo Medical College, Toledo, OH 43614, United States
| | - M. Khattar
- Department of Medical Microbiology and Immunology, University of Toledo Medical College, Toledo, OH 43614, United States
| | - P. M. Schroder
- Department of Medical Microbiology and Immunology, University of Toledo Medical College, Toledo, OH 43614, United States
| | - B. Mierzejewska
- Department of Medical Microbiology and Immunology, University of Toledo Medical College, Toledo, OH 43614, United States
| | - R. Deng
- Department of Medical Microbiology and Immunology, University of Toledo Medical College, Toledo, OH 43614, United States,Organ Transplantation Center, 1 Affiliated Hospital, Sun-Yat Sen University, Guangzhou, China 510080
| | - R. Han
- Department of Pathology and Laboratory Medicine, Children’s Hospital of Philadelphia and University of Pennsylvania School of Medicine, Philadelphia, PA 19104, United States
| | - W.W. Hancock
- Department of Pathology and Laboratory Medicine, Children’s Hospital of Philadelphia and University of Pennsylvania School of Medicine, Philadelphia, PA 19104, United States
| | - W. Chen
- Department of Medical Microbiology and Immunology, University of Toledo Medical College, Toledo, OH 43614, United States,Correspondence: Wenhao Chen, PhD and Stanislaw M. Stepkowski, PhD. Department of Medical Microbiology and Immunology, University of Toledo-Health Science Campus, 3000 Arlington Avenue, HEB 263A, Toledo, OH 43614. Telephone 419-383-6681, Fax 419-383-3002, ;
| | - S. M. Stepkowski
- Department of Medical Microbiology and Immunology, University of Toledo Medical College, Toledo, OH 43614, United States,Correspondence: Wenhao Chen, PhD and Stanislaw M. Stepkowski, PhD. Department of Medical Microbiology and Immunology, University of Toledo-Health Science Campus, 3000 Arlington Avenue, HEB 263A, Toledo, OH 43614. Telephone 419-383-6681, Fax 419-383-3002, ;
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