IMPROVED BIOARTIFICAL LIVER FUNCTION IN HEPATIC FAILURE

描述：（改编自申请人摘要）本申请 建议开发生物人工肝（BAL）作为桥接 用于肝移植或患者自发恢复的装置 急性肝功能衰竭 当前开发的BAL的问题是 肝细胞失去了重要的合成和生物转化 功能协调发展的 实验室的初步工作表明，细胞/细胞和 细胞/基质相互作用对于肝细胞分化是重要的， 功能 补助金的假设是，通过了解和 操纵参与细胞/基质和细胞/细胞的粘附受体 肝细胞分化和生物转化的相互作用， 改善，并因此改善BAL的功效。 具体目标 是：1. 为了证明大鼠和大鼠之间的粘附受体相互作用， 猪肝细胞和培养基质或其它肝细胞调节 生物转化功能; 2. P450的药物诱导是基质依赖性的 并将增强BAL的生物转化能力; 3. 到 证明由基质包埋肝细胞组成的优化BAL 用P450诱导剂的组合预处理的球状体将提供 在犬肝功能衰竭模型中的上级治疗功效。

DESCRIPTION: (Adapted from the applicant's abstract) This application proposes to develop a bioartificial liver (BAL) to be used as a bridging device to liver transplantation or for spontaneous recovery for patients with acute liver failure. The problems with the currently developed BAL are that the liver cells lose important synthetic and biotransformation functions. Preliminary work from the laboratory suggests that cell/cell and cell/matrix interactions are important for hepatocyte differentiation and function. The hypothesis of the grant is that by understanding and manipulating adhesion receptors involved in cell/matrix and cell/cell interactions that hepatocyte differentiation and biotransformation can be improved, and therefore improve the efficacy of a BAL. The Specific Aims are: 1. To demonstrate that adhesion receptor interactions between rat or porcine hepatocytes and the culture substratum or other liver cells regulate biotransformation functions; 2. Drug induction of P450 is matrix dependent and will enhance the biotransformation capacity of the BAL; 3. To demonstrate that an optimized BAL consisting of matrix entrapped hepatocyte spheroids pretreated with a combination of P450 inducers will provide superior therapeutic efficacy in a canine liver failure model.