Biodistribution and PK modeling of rat vs. human systems

大鼠与人体系统的生物分布和 PK 建模

基本信息

批准号：
10079898
负责人：
MICHAEL L SHULER
金额：
$ 22.63万
依托单位：
HESPEROS, LLC
依托单位国家：
美国
项目类别：
财政年份：
2020
资助国家：
美国
起止时间：
2020-09-11 至 2021-02-28
项目状态：
已结题

来源：
https://reporter.nih.gov/project-details/10079898
关键词：
Academia Acute Address Adult Animal Model Animal Sources Animals Attention Biodistribution Biological Markers Blood Blood - brain barrier anatomy Bolus Infusion Brain Cardiac Cell Survival Cells Cellular Morphology Chemicals Chronic Clinical Clinical Trials Consumption Data Development Devices Disease Disease model Dose Drug Delivery Systems Drug Kinetics Drug Transport Drug or Chemical Endothelium Evaluation Exposure to Failure Female Gastrointestinal tract structure Generations Goals Grant Health Human In Vitro Industry Intellectual Property Intravenous Investigation Laboratories Lead Learning Literature Liver Long-Term Potentiation Measurement Mechanics Memory Metabolism Microelectrodes Microfluidics Modeling Muscle Neonatal Neurons Oral Organ Organ Model Outcome Parents Pharmaceutical Preparations Pharmacodynamics Pharmacologic Substance Pharmacotherapy Phase Phenotype Physiological Physiology Pre-Clinical Model Preclinical Testing Property Publishing Qi Rare Diseases Rattus Research Route Serum Services Site Small Business Innovation Research Grant System Techniques Testing Therapeutic Tissues Toxic effect Toxicology Treatment Protocols Underserved Population Vision Work absorption aged base biological systems body on a chip body system cantilever cell type cost effective drug metabolism experience experimental study human data human model improved in vitro Model in vivo induced pluripotent stem cell interest male mathematical model microphysiology system models and simulation nutrient metabolism pharmacodynamic model pharmacokinetic model pharmacokinetics and pharmacodynamics physiologically based pharmacokinetics pre-clinical programs response shear stress species difference success tool

项目摘要

Project Summary/Abstract We propose to construct multi organ microphysiological systems (“Body-on-a-Chip” or BoaCs) from human and rat cells to use as a basis to understand species differences in response to exposure to drugs or chemicals in a system to evaluate biodistribution. A GI tract/BBB/neuronal BoaC will be constructed in Phase I and liver added in Phase II. This work will directly test whether such in vitro models can accurately reproduce species differences in response to known drugs. A preclinical model based on human cells that can accurately predict human response should lead to better decisions on whether exposure to a chemical or chemical mixture will be harmful to humans. Also, the tissues can exchange metabolites and the dose dynamics in the body of both parental compounds and metabolites are better represented than when a single cell type is exposed to a bolus dose. In addition, by comparing acute to chronic effects it will enable prediction on clinical trial success as well for determining PK of the compounds. In addition, the comparison of animal cells derived from iPSCs will enable the assessment of whether they can be substituted for primary animal cells. If successful, this could lead to stable cell sources for the animal models and reduce the number of animals needed for these studies. Changes in LTP will be utilized as it is a functional measurement of neuronal activity known to correlate with changes in memory and learning. The integration of this neuronal module with a human-on-a-chip system that includes a blood-brain-barrier (BBB) and GI tract. Inclusion of the liver in Phase II also allows investigation of the effect of metabolites in addition to the parent compound. To construct a well defined system we will use a common serum free medium which mimics key features of blood. Hickman has developed microelectrode arrays and cantilever systems that are integrated on chip that allow for noninvasive electronic and mechanical readouts for not only acute but also chronic tests as well. To improve operability and enable a low volume system for eventual metabolite evaluation, we will use a pumpless system (Sung, et al. 210) and self contained devices. We will also utilize microfluidic analytical components for rapid and sensitive biomarker assessment. The system will be modeled by simulation using CFD to establish acceptable ranges for consumption of nutrients and drug metabolism as well as shear stress and to predict drug concentration profiles in the system. We also will partner with Dr. Stephan Schmidt, an expert in drug-disease modeling and simulation approaches, to develop pharmacokinetic/pharmacodynamic (PBPK/PD) models to relate the in vitro studies to clinical outcomes. We believe that this technique will lead to more accurate and cost-effective assessment of the efficacy and toxicological potential of drugs chemicals or chemical mixtures and this approach will have a major impact on improving human health. Further, the combination of a multi-organ in vitro model with PBPK/PD modeling offers an opportunity to integrate direct experimental observations with a physiologically realistic mathematical model which will facilitate extrapolation of in vitro data to improved prediction of human response.

项目概要/摘要我们建议构建人体多器官微生理系统（“芯片上的身体”或BoaCs）和大鼠细胞作为了解药物或化学品暴露反应的物种差异的基础在评估生物分布的系统中将在第一阶段和肝脏中构建。第二阶段添加的这项工作将直接测试这种体外模型是否能够准确地复制物种。基于人体细胞的临床前模型，可以准确预测对已知药物的反应差异。人类的反应应该导致更好的决定是否接触化学品或化学混合物会受到影响。此外，组织可以交换体内的代谢物和剂量动态。与单一细胞类型暴露于推注相比，母体化合物和代谢物得到更好的体现此外，通过比较急性和慢性效应，还可以预测临床试验的成功。此外，还可以比较源自 iPSC 的动物细胞。评估它们是否可以替代原代动物细胞如果成功的话，这可能会导致为动物模型提供稳定的细胞来源，并减少这些研究所需的动物数量。将利用 LTP 的变化，因为它是已知与相关的神经活动的功能测量该神经模块与人类芯片系统的集成 II 期包括血脑屏障 (BBB) 和胃肠道，还可以对肝脏进行研究。为了构建一个明确的系统，我们将使用一个希克曼开发了模仿血液关键特征的常见无血清培养基。和集成在芯片上的悬臂系统，可实现非侵入式电子和机械读数不仅适用于急性测试，也适用于慢性测试，以提高可操作性并实现低容量系统。最终的代谢物评估，我们将使用无泵系统（Sung 等人，210）和独立设备。我们还将利用微流体分析组件进行快速、灵敏的生物标志物评估。将使用 CFD 进行模拟建模，以确定营养素和药物消耗的可接受范围我们也将与您合作。与药物疾病建模和模拟方法专家 Stephan Schmidt 博士一起开发我们将体外研究与临床结果联系起来的药代动力学/药效学 (PBPK/PD) 模型。相信这项技术将带来更准确和更具成本效益的疗效评估药物或化学混合物的毒理学潜力，这种方法将对此外，多器官体外模型与 PBPK/PD 模型的结合提供了改善人类健康的机会。将直接实验观察与生理学现实数学模型相结合的机会这将有助于体外数据的外推，以改进对人类反应的预测。