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Therapeutic regulatory T-cell adoptive transfer ameliorates established murine chronic GVHD in a CXCR5-dependent manner
Blood ( IF 20.3 ) Pub Date : 2016-08-18 , DOI: 10.1182/blood-2016-05-715896
Cameron McDonald-Hyman 1 , Ryan Flynn 1 , Angela Panoskaltsis-Mortari 1 , Nicholas Peterson 1 , Kelli P A MacDonald 2 , Geoffrey R Hill 2 , Leo Luznik 3 , Jonathan S Serody 4 , William J Murphy 5 , Ivan Maillard 6 , David H Munn 7 , Laurence A Turka 8 , John Koreth 9 , Corey S Cutler 9 , Robert J Soiffer 9 , Joseph H Antin 9 , Jerome Ritz 9 , Bruce R Blazar 1
Affiliation  

Chronic graft-versus-host disease (cGVHD) is a major complication of allogeneic hematopoietic stem cell transplantation. In cGVHD, alloreactive T cells and germinal center (GC) B cells often participate in GC reactions to produce pathogenic antibodies. Although regulatory T cells (Tregs) can inhibit GC reactions, Treg numbers are reduced in cGVHD, contributing to cGVHD pathogenesis. Here, we explored 2 means to increase Tregs in cGVHD: interleukin-2/monoclonal antibody (IL-2/mAb) complexes and donor Treg infusions. IL-2/mAb complexes given over 1 month were efficacious in expanding Tregs and treating established cGVHD in a multi-organ-system disease mouse model characterized by GC reactions, antibody deposition, and lung dysfunction. In an acute GVHD (aGVHD) model, IL-2/mAb complexes given for only 4 days resulted in rapid mortality, indicating IL-2/mAb complexes can drive conventional T-cell (Tcon)-mediated injury. In contrast, Treg infusions, which uniformly suppress aGVHD, increased Treg frequency and were effective in preventing the onset of, and treating, established cGVHD. Efficacy was dependent upon CXCR5-sufficient Tregs homing to, and inhibiting, GC reactions. These studies indicate that the infusion of Tregs, especially ones enriched for GC homing, may be desirable for cGVHD therapy. Although IL-2/mAb complexes can be efficacious in cGVHD, a cautious approach needs to be taken in settings in which aGVHD elements, and associated Tcon, are present.

中文翻译:

治疗性调节性 T 细胞过继转移以 CXCR5 依赖性方式改善已建立的小鼠慢性 GVHD

慢性移植物抗宿主病 (cGVHD) 是异基因造血干细胞移植的主要并发症。在 cGVHD 中,同种异体反应性 T 细胞和生发中心 (GC) B 细胞经常参与 GC 反应以产生致病性抗体。尽管调节性 T 细胞 (Tregs) 可以抑制 GC 反应,但 cGVHD 中的 Treg 数量减少,有助于 cGVHD 发病机制。在这里,我们探索了两种增加 cGVHD 中 Treg 的方法:白细胞介素 2/单克隆抗体 (IL-2/mAb) 复合物和供体 Treg 输注。在以 GC 反应、抗体沉积和肺功能障碍为特征的多器官系统疾病小鼠模型中,给予 1 个月以上的 IL-2/mAb 复合物可有效扩大 Tregs 并治疗已建立的 cGVHD。在急性 GVHD (aGVHD) 模型中,仅给予 4 天的 IL-2/mAb 复合物导致快速死亡,表明 IL-2/mAb 复合物可以驱动传统的 T 细胞 (Tcon) 介导的损伤。相比之下,Treg 输注均匀抑制 aGVHD,增加了 Treg 频率,并有效预防和治疗已建立的 cGVHD。功效取决于 CXCR5 足够的 Treg 归巢并抑制 GC 反应。这些研究表明,输注 Treg,尤其是富含 GC 归巢的 Treg,可能是 cGVHD 治疗所需要的。尽管 IL-2/mAb 复合物在 cGVHD 中可能有效,但在存在 aGVHD 元件和相关 Tcon 的环境中需要采取谨慎的方法。建立 cGVHD。功效取决于 CXCR5 足够的 Treg 归巢并抑制 GC 反应。这些研究表明,输注 Treg,尤其是富含 GC 归巢的 Treg,可能是 cGVHD 治疗所需要的。尽管 IL-2/mAb 复合物在 cGVHD 中可能有效,但在存在 aGVHD 元件和相关 Tcon 的环境中需要采取谨慎的方法。建立 cGVHD。功效取决于 CXCR5 足够的 Treg 归巢并抑制 GC 反应。这些研究表明,输注 Treg,尤其是富含 GC 归巢的 Treg,可能是 cGVHD 治疗所需要的。尽管 IL-2/mAb 复合物在 cGVHD 中可能有效,但在存在 aGVHD 元件和相关 Tcon 的环境中需要采取谨慎的方法。
更新日期:2016-08-18
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