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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2009.9
- 수록면
- 217 - 227 (11page)
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Immunotherapy with regulatory T lymphocytes is considered to be an attractive new therapeutic modality to prevent allograft rejection. The success of this new therapy is critically dependent on the preparation of highly effective and enough number of regulatory T cells. Here, we tried to establish a proper strategy for the ex vivo expansion of regulatory T cells and evaluated their characteristics. CD4?CD25<SUP>h+</SUP>CD62L? T cells were isolated from the recipient mice and weekly stimulated with various stimuli in the presence of IL-2. The most efficient protocol for the expansion of regulatory T cells maintaining Foxp3 expression and regulatory activity was the three cycles stimulation with donor bone marrow-derived dendritic cells (BM-DCs) which yielded around 400 fold expansion of regulatory T cells. The in vitro-expanded regulatory T cells expressing lymph node homing receptors on their cell surface, were composed of polyclonal population, and did not acquire the ability to produce effector cytokines. Importantly, these expanded regulatory T cells induced a modest prolongation of skin allograft survival when combined with transient T cell depletion in recipient mice. These data indicate that our protocol could be used to obtain an effective population of natural regulatory T cells available for the regulatory T cell therapy to prevent allograft rejection.
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