Rationally Designed, Target-specific Imaging Probes for Nephro-urology Diagnoses

项目标题：合理设计、靶向特定的成像探头用于肾泌尿外科诊断 项目摘要 该项目的重点是放射性核素肾脏特异性探针的新设计和测试。 成像。不同于临床上使用的现有标准护理示踪剂依赖于被动摄取和 清除机制，我们的重组探针基于定位肾脏的靶向设计 功能，包括肾小球的过滤和近端小管的蛋白质分类。这种方法 实现具有分子特异性的功能性肾脏成像。我们采用了融合策略来设计 探针，在该探针中，我们将选定的血浆蛋白的模块化片段连接起来，形成新的杂交探针。 这些模块节段是可以单独与其同源肾脏相互作用的功能单元 感受器。因此，预计每个探头将沿着引导的肾内通道和 顺序地与预定受体相互作用。这种新颖的方法前景看好，如 概念验证研究，并将继续进行，以衡量肾脏的不同功能。我们 将通过三个相互关联和协同的具体目标来实现我们的研究目标，这三个目标是 用于测量肾功能和病理生理学的关键方面，包括肾小球 滤过和肾小管重摄取(Aim 1)、肾小球密度(Aim 2)和早期病理改变 过滤屏障(目标3)。研究将酌情在急性和慢性环境中进行 使用相关的肾脏疾病模型，如缺血/再灌注损伤、肾毒性、高血压 和自身免疫，这是人类常见肾脏疾病的代表。总体而言，我们的新探测器 旨在直接满足肾脏疾病早期和特定标记物的需求。成像 来自这些探测器的数据将为推动技术向 他们最终将其转化为病人护理。

Project Title: Rationally Designed, Target-specific Imaging Probes for Nephro-urology Diagnoses Project Summary The project focuses on novel design and testing of kidney-specific probes for radionuclide renal imaging. Unlike existing standard-of-care tracers used in the clinic that rely on passive uptake and clearance mechanisms, our recombinant probes are based on targeted design for mapping kidney functions, including filtration at the glomerulus and protein sorting at the proximal tubule. This approach enables functional renal imaging with molecular specificity. We adapted a fusion strategy in designing the probes, in which we joined modular segments of selected plasma proteins to form new hybrid probes. These modular segments are the functional units that can individually interact with their cognate renal receptors. Accordingly, it is anticipated that each probe will follow a guided intrarenal passage and sequentially interactions with intended receptors. This novel approach holds promise, as demonstrated in proof-of-concept studies and will continue to be pursued, for measuring distinct functions of the kidney. We will accomplish our research goal via three interconnected and synergistic Specific Aims, which are designed for measuring critical aspects of the renal function and pathophysiology, including glomerular filtration and tubular reuptake (Aim 1), glomerular density (Aim 2), and the early pathological changes in the filtration barrier (Aim 3). The studies will be conducted in acute and chronic settings as appropriate using relevant kidney disease models such as ischemic/reperfusion injury, nephrotoxicity, hypertension and autoimmunity, which are representative of common renal diseases in humans. Overall, our new probes are intended for directly addressing the needs for early and specific markers of renal diseases. The imaging data from these probes will provide important mechanistic insights for advancing the technologies toward their ultimate translation to patient care.