TGFβ Neutralization within Cardiac Allografts by Decorin Gene Transfer Attenuates Chronic Rejection

被引:18
作者
Faust, Susan M. [2 ]
Lu, Guanyi
Wood, Sherri C.
Bishop, D. Keith [1 ,2 ,3 ]
机构
[1] Univ Michigan, Transplant Immunol Res Lab, Sect Gen Surg, Med Ctr,Dept Surg,Sch Med, Ann Arbor, MI 48109 USA
[2] Univ Michigan, Grad Program Cellular & Mol Biol, Sch Med, Ann Arbor, MI 48109 USA
[3] Univ Michigan, Grad Program Immunol, Sch Med, Ann Arbor, MI 48109 USA
关键词
GROWTH-FACTOR-BETA; REGULATORY T-CELLS; TRANSFORMING GROWTH-FACTOR-BETA-1; PROTEOGLYCANS DECORIN; IMMUNE-RESPONSE; DIFFERENTIATION; TRANSPLANTATION; EXPRESSION; FIBROBLASTS; INDUCTION;
D O I
10.4049/jimmunol.0902736
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
Chronic allograft rejection (CR) is the leading cause of late graft failure following organ transplantation. CR is a progressive disease, characterized by deteriorating graft function, interstitial fibrosis, cardiac hypertrophy, and occlusive neointima development. TGF beta, known for its immunosuppressive qualities, plays a beneficial role in the transplant setting by maintaining alloreactive T cells in a hyporesponsive state, but has also been implicated in promoting graft fibrosis and CR. In the mouse vascularized cardiac allograft model, transient depletion of CD4(+) cells promotes graft survival but leads to CR, which is associated with intragraft TGF beta expression. Decorin, an extracellular matrix protein, inhibits both TGF beta bioactivity and gene expression. In this study, gene transfer of decorin into cardiac allografts was used to assess the impact of intragraft TGF beta neutralization on CR, systemic donor-reactive T cell responses, and allograft acceptance. Decorin gene transfer and neutralization of TGF beta in cardiac allografts significantly attenuated interstitial fibrosis, cardiac hypertrophy, and improved graft function, but did not result in systemic donor-reactive T cell responses. Thus, donor-reactive T and B cells remained in a hyporesponsive state. These findings indicate that neutralizing intragraft TGF beta inhibits the cytokine's fibrotic activities, but does not reverse its beneficial systemic immunosuppressive qualities. The Journal of Immunology, 2009, 183: 7307-7313.
引用
收藏
页码:7307 / 7313
页数:7
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