Mechanisms of Liver Disease Progression by Hepatitis C Virus

丙型肝炎病毒导致肝病进展的机制

基本信息

批准号：
8516026
负责人：
Ranjit Ray
金额：
$ 30.34万
依托单位：
SAINT LOUIS UNIVERSITY
依托单位国家：
美国
项目类别：
财政年份：
2009
资助国家：
美国
起止时间：
2009-08-01 至 2016-06-30
项目状态：
已结题

来源：
https://reporter.nih.gov/project-details/8516026
关键词：
Address Affect Applications Grants Cell Culture Techniques Chronic Hepatitis C Complementary DNA Core Protein Cytokine Activation Data Diabetes Mellitus Disease Progression Epidemiologic Studies Extracellular Matrix Genes Goals Health Hepatic Fibrogenesis Hepatic Stellate Cell Hepatitis C Hepatitis C virus Hepatocyte Human Infection Inflammatory Insulin Resistance Insulin Resistance Pathway Insulin Signaling Pathway Interleukin-6 Knowledge Kupffer Cells Lead Length Liver Liver Fibrosis Liver diseases Mediating Mediator of activation protein Metabolic Molecular Non-Insulin-Dependent Diabetes Mellitus Pathologic Pathway interactions Patients Phosphorylation Polyproteins Prevalence Replicon Research Proposals Role Serine Steatohepatitis Transgenic Mice Viral Proteins base cellular targeting cytokine fibrogenesis follow-up forkhead protein hepatitis C virus nucleocapsid protein insulin receptor serine kinase insulin signaling liver function novel therapeutic intervention prevent protein function stellate cell therapeutic target virus core

项目摘要

DESCRIPTION (provided by applicant): Hepatitis C virus (HCV) often causes persistent infection in humans, which may lead to progressive liver disease. We hypothesize that disease progression from chronic HCV infection is attributed, at least in part, to the effect of HCV core protein on the expression of host cellular genes. Our long term goal is to understand the underlying mechanisms behind HCV mediated liver disease progression. We were among the first to identify many intriguing functions related to HCV core protein, which may significantly contribute to disease progression. However, there are critical gaps in our understanding of the key cellular targets and molecular mechanisms by which core protein exerts these functions alone or in context to other HCV proteins. HCV induces hepatocellular insulin resistance and hepatic fibrogenesis. Our focus in this grant application is to examine the underlying mechanisms of HCV induced insulin resistance and fibrogenesis as a follow up to our preliminary data provided with this application. The current research proposal includes complementary but independent aims to address our hypothesis. Aim 1 will investigate the mechanism of IRS phosphorylation by HCV core protein, Aim 2 will investigate the functional correlates of HCV core protein induced metabolic regulators, and Aim 3 will evaluate the role of HCV core protein in hepatic fibrosis. Studies will also be performed using full-length cDNA, replicon or cell culture grown HCV to provide a molecular basis for HCV core protein functions in context to other HCV proteins. Knowledge on the molecular determinants involved in HCV mediated disease progression will open avenues for novel therapeutic approach.

描述（由申请人提供）：丙型肝炎病毒（HCV）经常引起人类持续感染，可能导致进行性肝病。我们假设慢性 HCV 感染引起的疾病进展至少部分归因于 HCV 核心蛋白对宿主细胞基因表达的影响。我们的长期目标是了解 HCV 介导的肝病进展背后的潜在机制。我们是最早发现与 HCV 核心蛋白相关的许多有趣功能的人之一，这些功能可能对疾病进展有显着贡献。然而，我们对核心蛋白单独或与其他 HCV 蛋白结合发挥这些功能的关键细胞靶点和分子机制的理解存在重大差距。 HCV 诱导肝细胞胰岛素抵抗和肝纤维化。我们在本次拨款申请中的重点是检查 HCV 诱导的胰岛素抵抗和纤维形成的潜在机制，作为我们随本次申请提供的初步数据的后续行动。当前的研究提案包括补充但独立的目标来解决我们的假设。目标 1 将研究 HCV 核心蛋白磷酸化 IRS 的机制，目标 2 将研究 HCV 核心蛋白诱导的代谢调节因子的功能相关性，目标 3 将评估 HCV 核心蛋白在肝纤维化中的作用。还将使用全长 cDNA、复制子或细胞培养物培养的 HCV 进行研究，为 HCV 核心蛋白相对于其他 HCV 蛋白的功能提供分子基础。有关 HCV 介导的疾病进展的分子决定因素的知识将为新的治疗方法开辟途径。