Diversity Supplement: Directing Tryptophan Immunometabolism to Ameliorate Liver Ischemic-Reperfusion Injury

联系PD/PI：Keselowsky，Benjamin G 项目摘要/摘要 许多不同的疾病状态和手术干预导致了一段时间的不充分 组织/器官供血(即缺血)，当血流量减少时，会导致再灌注损伤 恢复，称为缺血再灌注损伤(IRI)。IRI导致局部炎症，细胞死亡， 过度的组织破坏和可能的器官衰竭。移植就是这样的例子， 创伤、心肌梗死、中风，尤其是IRI是肝功能障碍的主要原因。 以及肝脏手术后的衰竭。不幸的是，目前临床上还没有可用的治疗方法。 练习解决IRI，其中主要问题是有害的全身副作用和毒性 现有药物的价值。 为了解决这个问题，我们正在创新一种新的治疗技术，旨在通过编程 免疫细胞通过引导色氨酸进入代谢状态阻止过度炎症 通过将一种酶送入循环而进行的新陈代谢。这代表了一种新的反 炎症/免疫抑制生物药物，可能限制全身毒性/副作用 影响，并有可能显著减少免疫损害。缺乏治疗选择 肝脏IRI和体内初步数据目录有力地支持了基本原理 IDO作为一种创新的新型抗炎剂的前景，使这一提议具有非常重要的意义。 展望未来，成功将打开机会，扩大到其他消炎药 例如，用于移植的供体移植物的预处理。 项目摘要/摘要第6页

Contact PD/PI: Keselowsky, Benjamin G Project Summary/Abstract Many different disease states and surgical interventions result in a period of inadequate tissue/organ blood supply (i.e., ischemia), that result in reperfusion injury when blood flow is restored, known as ischemia-reperfusion injury (IRI). IRI causes local inflammation, cell death, excessive tissue destruction and possible organ failure. Examples are found in transplantation, trauma, myocardial infarction, stroke, and in particular, IRI is a main cause of liver dysfunction and failure after liver surgery. Unfortunately, there are currently no therapies available in clinical practice addressing IRI, where a major problem is the harmful systemic side effects and toxicities of existing drugs. To address this problem, we are innovating a new therapeutic technology aiming to program immune cells toward a metabolic state blocking excessive inflammation by directing tryptophan metabolism through delivery of an enzyme into circulation. This represents a new class of anti- inflammatory/immunosuppressive biologic drug, with potential to limit systemic toxicities/side effects, and with potential to be significantly less immunocompromising. Lack of treatment options for liver IRI and a catalog of in vivo preliminary data strongly supporting the foundational rationale of IDO as an innovative new anti-inflammatory agent, make this proposal highly significant. Looking to the future, success would open opportunity to expand to other anti-inflammatory applications, for example, pre-conditioning donor grafts for transplantation. Project Summary/Abstract Page 6