Reversal of spontaneous autoimmune insulitis in nonobese diabetic mice by soluble lymphotoxin receptor.

Reversal of spontaneous autoimmune insulitis in nonobese diabetic mice by soluble lymphotoxin receptor.
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DOI:
10.1084/jem.193.11.1327
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发表时间:
2001-06-04
期刊:
The Journal of experimental medicine
影响因子:
--
通讯作者:
Fu YX
Fu YX
中科院分区:
其他
文献类型:
--
作者:
Wu Q;Salomon B;Chen M;Wang Y;Hoffman LM;Bluestone JA;Fu YX

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自发性自身免疫性糖尿病的一个显著特征是胰腺内淋巴滤泡结构的原型形成。已证明,光氧合酶(LT)在脾脏淋巴滤泡的形成中起重要作用。为探讨LT介导的微环境在胰岛素依赖型糖尿病(insulin-dependent diabetes mellitus,IDDM)发病机制中的作用,将LTβ受体-免疫球蛋白融合蛋白(LTβR-Ig)给予非肥胖糖尿病小鼠。早期应用LTβR-Ig可预防胰岛炎和IDDM的发生,提示LT在胰岛炎的发生发展中起重要作用。在疾病晚期进行LTβR-Ig治疗也可显著逆转胰岛炎并预防糖尿病。此外,在过继转移模型中,LTβR-Ig治疗可预防致糖尿病性T细胞导致的IDDM发展。因此,LTβR-Ig可以破坏胰岛中建立良好的淋巴微环境,这是IDDM发生和发展所必需的。
One striking feature of spontaneous autoimmune diabetes is the prototypic formation of lymphoid follicular structures within the pancreas. Lymphotoxin (LT) has been shown to play an important role in the formation of lymphoid follicles in the spleen. To explore the potential role of LT-mediated microenvironment in the pathogenesis of insulin-dependent diabetes mellitus (IDDM), an LTβ receptor–immunoglobulin fusion protein (LTβR–Ig) was administered to nonobese diabetic mice. Early treatment with LTβR–Ig prevented insulitis and IDDM, suggesting that LT plays a critical role in the insulitis development. LTβR–Ig treatment at a late stage of the disease also dramatically reversed insulitis and prevented diabetes. Moreover, LTβR–Ig treatment prevented the development of IDDM by diabetogenic T cells in an adoptive transfer model. Thus, LTβR–Ig can disassemble the well established lymphoid microenvironment in the islets, which is required for the development and progression of IDDM.
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