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Early T Cell Activation Metrics Predict Graft-versus-Host Disease in a Humanized Mouse Model of Hematopoietic Stem Cell Transplantation
The Journal of Immunology ( IF 3.6 ) Pub Date : 2020-05-22 , DOI: 10.4049/jimmunol.2000054
Nicholas J Hess 1 , Amy W Hudson 2 , Peiman Hematti 3 , Jenny E Gumperz 4
Affiliation  

Key Points Xenogeneic transfer of human graft tissue does not lead to inevitable GVHD. The degree of GVHD response varies among clinical transplantation tissues. Peripheral blood T cell responses can predict GVHD development. Visual Abstract Acute graft-versus-host disease (GVHD) is a frequent complication of hematopoietic transplantation, yet patient risk stratification remains difficult, and prognostic biomarkers to guide early clinical interventions are lacking. We developed an approach to evaluate the potential of human T cells from hematopoietic grafts to produce GVHD. Nonconditioned NBSGW mice transplanted with titrated doses of human bone marrow developed GVHD that was characterized by widespread lymphocyte infiltration and organ pathology. Interestingly, GVHD was not an inevitable outcome in our system and was influenced by transplant dose, inflammatory status of the host, and type of graft. Mice that went on to develop GVHD showed signs of rapid proliferation in the human T cell population during the first 1–3 wk posttransplant and had elevated human IFN-γ in plasma that correlated negatively with the expansion of the human hematopoietic compartment. Furthermore, these early T cell activation metrics were predictive of GVHD onset 3–6 wk before phenotypic pathology. These results reveal an early window of susceptibility for pathological T cell activation following hematopoietic transplantation that is not simply determined by transient inflammation resulting from conditioning-associated damage and show that T cell parameters during this window can serve as prognostic biomarkers for risk of later GVHD development.

中文翻译:

早期 T 细胞激活指标预测造血干细胞移植人源化小鼠模型中的移植物抗宿主病

要点 人类移植组织的异种移植不会导致不可避免的 GVHD。GVHD 反应的程度因临床移植组织而异。外周血 T 细胞反应可以预测 GVHD 的发展。视觉摘要 急性移植物抗宿主病 (GVHD) 是造血移植的常见并发症,但患者风险分层仍然很困难,并且缺乏指导早期临床干预的预后生物标志物。我们开发了一种方法来评估来自造血移植物的人类 T 细胞产生 GVHD 的潜力。移植了滴定剂量的人骨髓的非条件性 NBSGW 小鼠发生了 GVHD,其特征是广泛的淋巴细胞浸润和器官病理学。有趣的是,GVHD 在我们的系统中并不是不可避免的结果,而是受移植剂量的影响,宿主的炎症状态和移植物类型。继续发展为 GVHD 的小鼠在移植后的前 1-3 周内显示出人类 T 细胞群快速增殖的迹象,并且血浆中的人类 IFN-γ 升高,这与人类造血区室的扩张呈负相关。此外,这些早期 T 细胞活化指标可预测表型病理学前 3-6 周 GVHD 的发作。这些结果揭示了造血移植后病理性 T 细胞激活的早期易感性窗口,这不仅仅是由条件相关损伤引起的短暂炎症决定的,并且表明该窗口期间的 T 细胞参数可以作为后期 GVHD 发展风险的预后生物标志物. 继续发展为 GVHD 的小鼠在移植后的前 1-3 周内显示出人类 T 细胞群快速增殖的迹象,并且血浆中的人类 IFN-γ 升高,这与人类造血区室的扩张呈负相关。此外,这些早期 T 细胞活化指标可预测表型病理学前 3-6 周 GVHD 的发作。这些结果揭示了造血移植后病理性 T 细胞激活的早期易感性窗口,这不仅仅是由条件相关损伤引起的短暂炎症决定的,并且表明该窗口期间的 T 细胞参数可以作为后期 GVHD 发展风险的预后生物标志物. 继续发展为 GVHD 的小鼠在移植后的前 1-3 周内显示出人类 T 细胞群快速增殖的迹象,并且血浆中的人类 IFN-γ 升高,这与人类造血区室的扩张呈负相关。此外,这些早期 T 细胞活化指标可预测表型病理学前 3-6 周 GVHD 的发作。这些结果揭示了造血移植后病理性 T 细胞激活的早期易感性窗口,这不仅仅是由条件相关损伤引起的短暂炎症决定的,并且表明该窗口期间的 T 细胞参数可以作为后期 GVHD 发展风险的预后生物标志物.
更新日期:2020-05-22
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