Suppression of autoimmune disease after vaccination with autoreactive T cells that express Qa-1 peptide complexes.

Suppression of autoimmune disease after vaccination with autoreactive T cells that express Qa-1 peptide complexes.
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使用表达 Qa-1 肽复合物的自身反应性 T 细胞接种疫苗后可抑制自身免疫性疾病。

DOI:
10.1172/jci20772
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发表时间:
2004
期刊:
The Journal of clinical investigation.
影响因子:
--
通讯作者:
Cantor,Harvey
Cantor,Harvey
中科院分区:
--
文献类型:
--
作者:
Panoutsakopoulou,Vily;Huster,KatharinaM;McCarty,Nami;Feinberg,Evan;Wang,Rijian;Wucherpfennig,KaiW;Cantor,Harvey

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自身反应性 T 细胞引发自身免疫性疾病的能力已有充分记录。减毒自身反应性 T 细胞免疫(T 细胞疫苗接种或 TCV)可诱导 T 细胞依赖性自身免疫反应抑制,这一发现为利用调节性 T 细胞抑制自身免疫性疾病提供了可能性。然而,TCV 的临床应用进展缓慢,部分原因是其潜在机制仍存在不确定性。我们在两种小鼠自身免疫模型中研究了 TCV 诱导的疾病抵抗力的分子基础:单纯疱疹病毒 1(KOS 株)诱导的疱疹基质角膜炎和非肥胖糖尿病 (NOD) 小鼠的小鼠自身免疫性糖尿病。我们发现 TCV 的治疗效果取决于抑制性 CD8 细胞的激活,这些细胞特异性识别自身反应性 CD4 细胞表达的 Qa-1 结合肽。我们阐明了 Qa-1 和自肽之间的分子相互作用,产生具有生物活性的配体,能够诱导抑制性 CD8 细胞并将其靶向自身反应性 CD4 细胞。这些研究表明,用带有人类等效鼠 Qa-1 (HLA-E) 的肽脉冲细胞进行疫苗接种可能代表了自身免疫性疾病细胞治疗的一种方便且有效的临床方法。
The ability of autoreactive T cells to provoke autoimmune disease is well documented. The finding that immunization with attenuated autoreactive T cells (T cell vaccination, or TCV) can induce T cell–dependent inhibition of autoimmune responses has opened the possibility that regulatory T cells may be harnessed to inhibit autoimmune disease. Progress in the clinical application of TCV, however, has been slow, in part because the underlying mechanism has remained clouded in uncertainty. We have investigated the molecular basis of TCV-induced disease resistance in two murine models of autoimmunity: herpes simplex virus-1 (KOS strain)–induced herpes stromal keratitis and murine autoimmune diabetes in non-obese diabetic (NOD) mice. We find that the therapeutic effects of TCV depend on activation of suppressive CD8 cells that specifically recognize Qa-1–bound peptides expressed by autoreactive CD4 cells. We clarify the molecular interaction between Qa-1 and self peptides that generates biologically active ligands capable of both inducing suppressive CD8 cells and targeting them to autoreactive CD4 cells. These studies suggest that vaccination with peptide-pulsed cells bearing the human equivalent of murine Qa-1 (HLA-E) may represent a convenient and effective clinical approach to cellular therapy of autoimmune disease.
DOI: 10.4049/jimmunol.162.9.5398
发表时间: 1999-05
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