Budget Amount *help |
¥18,720,000 (Direct Cost: ¥14,400,000、Indirect Cost: ¥4,320,000)
Fiscal Year 2009: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2008: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2007: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
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Research Abstract |
Regulatory T (Treg) cells play an important role in graft tolerance. We examined whether a superagonistic monoclonal antibody specific for CD28 (CD28SA), using rat acute renal allograft model (Wistar to Lewis). CD28SA induced marked infiltration of Treg cells into the allografts. 90% of recipients treated with CD28SA survived over 100 days, and 70% survived with well-preserved graft function until graft harvest at 180 days. Furthermore, these long-surviving recipients showed donor-specific tolerance. In conclusion, CD28SA treatment successfully induces donor-specific tolerance with the involvement of Treg cells, and thus the therapeutic value of this approach warrants further investigation and preclinical studies.
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