Role of SIRT3 in fetal programming and kidney dysfunction

SIRT3 在胎儿编程和肾功能障碍中的作用

• 批准号: 8617272
• 负责人: KAREN R JONSCHER
• 金额: $ 13.09万
• 依托单位: UNIVERSITY OF COLORADO DENVER
• 依托单位国家: 美国
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-04-01 至 2018-01-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8617272
• 关键词: Acetylation; Adolescent; Adult; Affect; Albumins; Animal Model; Antioxidants; Appearance; Award; Biochemical; Bioinformatics; Biological Assay; Biological Markers; Biology; Biomedical Research; Blood Pressure; Cardiovascular Diseases; Career Choice; Cells; Child; Childhood; Clinical; Clinical Sciences; Collaborations; Collagen; Colorado; Communities; Comorbidity; Core Facility; Cyclic AMP-Responsive DNA-Binding Protein; Data; Deacetylase; Deposition; Development; Diabesity; Diabetes Mellitus; Diet; Disease; Educational Background; Endocrinologist; Endocrinology; Enzymes; Epidemic; Epithelial Cells; Etiology; Exposure to; Fatty Liver; Fatty acid glycerol esters; Female of child bearing age; Fetal Kidney; Functional disorder; Future; Genetic; Gestational Diabetes; Glomerular Filtration Rate; Glucose; Goals; Hepatic; Hyperglycemia; Hypertension; Hypoxia; Incidence; Infant; Injury; Institutes; Insulin; Insulin Resistance; Intervention; Intervention Studies; Investigation; Kidney; Kidney Diseases; Laboratories; Lactation; Lead; Leadership; Learning; Lipids; Liver; Liver diseases; Measures; Mediating; Medical; Mentors; Metabolic; Metabolic Diseases; Metabolic syndrome; Metabolism; Microscopy; Mitochondria; Modeling; Molecular; Molecular and Cellular Biology; Mothers; Mus; Nutritional; Nutritional Biochemistry; Obese Mice; Obesity; Obesity associated disease; Output; Overweight; Oxidative Stress; PQQ Cofactor; Pathogenesis; Perinatal Exposure; Phenotype; Play; Post-Translational Protein Processing; Pregnancy; Prevalence; Proteins; Proteomics; Protocols documentation; Public Health; Publications; Publishing; Regulation; Renal function; Research; Research Personnel; Resources; Role; Serum; Signaling Protein; Stress; Students; System; Techniques; Testing; Time; Tissues; Training; Translational Research; United States National Institutes of Health; Universities; Vascular Diseases; Weaning; Western World; Work; age related; animal data; base; career; career development; design; early onset; experience; fetal programming; good diet; human data; immunoaffinity chromatography; improved; in utero; indexing; innovation; inorganic phosphate; insight; interest; kidney metabolism; light microscopy; lipid metabolism; mature animal; member; metabolomics; method development; mitochondrial dysfunction; mouse model; nervous system disorder; nonhuman primate; novel; nutrition; offspring; podocyte; prevent; programs; protein metabolite; public health relevance; ranpirnase; response; skills; success; trend; urinary

DESCRIPTION (provided by applicant): An Applied Physicist and proteomics expert at the University of Colorado Denver, Dr. Karen Jonscher's overarching goal is to apply her unique skill set, and an innate ability to synergize information from varied fields, toward creative hypothesis development and the independent pursuit of an innovative and productive applied biomedical research career. Her long-term objective is to apply quantitative analytical and bioinformatic approaches to understand the role of mitochondrial dysfunction and oxidative stress in obesity- related disease. Her short-term focus, and the subject of the proposed research, is to investigate molecular mechanisms whereby exposure to maternal over-nutrition programs future changes in kidney mitochondrial dysfunction, resulting in early-onset nephropathy. This K25 award will provide Dr. Jonscher with the support necessary to accomplish the following goals: 1) attain the educational background required to firmly anchor her ideas in the underlying biology and nutritional biochemistry of the systems she is investigating, 2) obtain exposure to molecular and cellular biology approaches that are important for the proposed work and her future independent research, 3) learn to implement cutting-edge metabolomic techniques in her research, 4) become expert at state-of-the-art advanced microscopy techniques used to investigate protein signaling and lipid metabolism, 5) build new skills for mentoring success and academic leadership and 6) develop a research program that will allow her to successfully compete as an independent biomedical investigator. To achieve these goals, Dr. Jonscher has capitalized on the outstanding educational resources available at the University of Colorado Denver Downtown and Anschutz Medical Campuses, as well as those provided by the Colorado Clinical and Translational Science Institute (NIH UL1 TR000154), the Nutrition and Obesity Research Center (P30 DK048520), the Division of Endocrinology, Diabetes and Metabolism, the Advanced Light Microscopy Core Facility and the Metabolic Core Lab in the design of her career development and training plan. Importantly, she has assembled a world-renowned mentoring team comprised of primary mentor Dr. Jed Friedman, whose lab investigates metabolic and genetic causes and consequences of maternal obesity and gestational diabetes mellitus (GDM) on the early developmental origins of obesity; co- mentor Dr. Moshe Levi, an expert in renal pathophysiology and advanced microscopy, studying regulation of phosphate and lipid metabolism in the pathogenesis of obesity, diabetes mellitus and age-related renal and vascular disease; advisor Dr. Jane Reusch, a clinical endocrinologist focused on understanding how diabetes, hyperglycemia and oxidative stress modulate activity of the cAMP Response Element Binding Protein in vascular disease; advisor Dr. Robert Rucker, an expert nutritional biochemist interested in elucidating the mechanism of action of pyrroloquinoline quinone (PQQ) in cells and mitochondria; advisor Dr. Manisha Patel, whose expertise lies in the study of oxidative stress and mitochondrial dysfunction in neurological disease, and advisor Dr. Sean Colgan, an expert epithelial cell biologist focused on the mechanistic role of hypoxia in disease. Each team member will assist with specific aspects of the research plan, offering help with protocols and method development, troubleshooting, and data interpretation. These senior-level academicians will help guide Dr. Jonscher's career path, provide advice on leading a laboratory and successfully mentoring students, and enable her to establish new collaborations and networks within the broader scientific community that will facilitate her transition to independence. The emergence of adult metabolic disease epidemics in young children is an enormous public health concern and is the focus of Dr. Jonscher's research goals. Global factors that may play a key role in this etiology include maternal diet and metabolism; mitochondrial dysfunction and oxidative stress are potentially important molecular drivers. However, early cellular origins and tissue-specific dysfunction related to maternal over-nutrition, particularly in the kidney, remain to be identified and disease biomarkers are not well established. Dr. Jonscher's compelling and novel preliminary data show altered lipid accumulation, collagen deposition and protein hyperacetylation in kidneys from juvenile offspring exposed to maternal obesity, suggesting a role for acetylation in regulating the metabolic response to high lipid loads. She proposes to characterize quantitative histological, biochemical and cellular markers of early-onset kidney disease (Aim 1) and correlate them with functionally important proteomic and metabolomic changes (Aim 2) using a high-fat diet mouse model of developmental programming. Endpoints of Aims 1 and 2 will be reassessed following intervention using the anti-oxidant pyrroloquinoline quinone (PQQ) to rescue the phenotype (Aim 3). These will be the first studies to 1) quantify alterations in renal lipid metabolism inducd by maternal obesity, 2) determine functional consequences of protein hyperacetylation in kidney metabolism following maternal lipid exposure, 3) identify a potential role for SIRT3 in regulating mitochondrial response to maternal over-nutrition, and 4) administer a potent anti-oxidant during pregnancy and lactation to rescue developmentally programmed "lipotoxicity." Results from these studies will provide novel protein and metabolite targets for Dr. Jonscher's future independent investigations and fresh insights into mechanisms by which metabolic disease may be propagated.

描述（由申请人提供）：Karen Jonscher 博士是科罗拉多大学丹佛分校的应用物理学家和蛋白质组学专家，她的首要目标是运用她独特的技能和协同不同领域信息的天生能力，实现创造性假设的发展和独立追求创新和富有成效的应用生物医学研究生涯。她的长期目标是应用定量分析和生物信息学方法来了解线粒体功能障碍和氧化应激在肥胖相关疾病中的作用。她的短期重点和拟议研究的主题是调查分子机制，通过这些机制，母亲营养过剩会导致肾脏线粒体功能障碍的未来变化，从而导致早发性肾病。 该 K25 奖项将为 Jonscher 博士提供实现以下目标所需的支持：1) 获得所需的教育背景，将她的想法牢固地扎根于她正在研究的系统的基础生物学和营养生物化学中，2) 接触对拟议工作和未来独立研究非常重要的分子和细胞生物学方法，3) 学习在她的研究中实施尖端代谢组学技术，4) 成为专家 掌握用于研究蛋白质信号传导和脂质代谢的最先进的先进显微镜技术，5）培养指导成功和学术领导力的新技能，6）开发一个研究项目，使她能够作为独立的生物医学研究者成功竞争。 为了实现这些目标，Jonscher 博士利用了科罗拉多大学丹佛市中心分校和 Anschutz 医学院的优秀教育资源，以及科罗拉多临床和转化科学研究所 (NIH UL1 TR000154)、营养与肥胖研究中心 (P30 DK048520)、内分泌、糖尿病和代谢部门、先进光学显微镜核心提供的教育资源 设施和代谢核心实验室设计了她的职业发展和培训计划。重要的是，她组建了一支世界知名的指导团队，由主要导师 Jed Friedman 博士组成，他的实验室研究代谢和遗传原因以及孕产妇肥胖和妊娠糖尿病 (GDM) 对肥胖早期发育起源的影响；导师Moshe Levi博士是肾脏病理生理学和高级显微镜学专家，研究肥胖、糖尿病和与年龄相关的肾脏和血管疾病发病机制中磷酸盐和脂质代谢的调节；顾问 Jane Reusch 博士是一位临床内分泌学家，专注于了解糖尿病、高血糖和氧化应激如何调节血管疾病中 cAMP 反应元件结合蛋白的活性；顾问 Robert Rucker 博士，营养生物化学专家，致力于阐明吡咯喹啉醌 (PQQ) 在细胞和线粒体中的作用机制；顾问 Manisha Patel 博士的专长是神经系统疾病中氧化应激和线粒体功能障碍的研究，顾问 Sean Colgan 博士是一位上皮细胞生物学专家，专注于缺氧在疾病中的机制作用。每个团队成员将协助研究计划的特定方面，提供协议和方法开发、故障排除和数据解释方面的帮助。这些高级院士将帮助指导 Jonscher 博士的职业道路，提供有关领导实验室和成功指导学生的建议，并使她能够在更广泛的科学界建立新的合作和网络，从而促进她向独立的过渡。 成人代谢性疾病在幼儿中流行的出现是一个巨大的公共卫生问题，也是 Jonscher 博士研究目标的重点。可能在该病因中发挥关键作用的全局因素包括母亲的饮食和新陈代谢；线粒体功能障碍和氧化应激是潜在的重要分子驱动因素。然而，与母体营养过剩相关的早期细胞起源和组织特异性功能障碍，特别是在肾脏中，仍有待确定，并且疾病生物标志物尚未确定。 Jonscher 博士令人信服且新颖的初步数据显示，暴露于母亲肥胖的幼年后代肾脏中的脂质积累、胶原蛋白沉积和蛋白质过度乙酰化发生了改变，这表明乙酰化在调节对高脂质负荷的代谢反应中发挥着作用。她建议利用发育编程的高脂肪饮食小鼠模型来表征早发性肾病的定量组织学、生化和细胞标记（目标 1），并将其与功能上重要的蛋白质组和代谢组变化（目标 2）相关联。在使用抗氧化剂吡咯喹啉醌 (PQQ) 挽救表型（目标 3）进行干预后，将重新评估目标 1 和 2 的终点。这些将是第一个研究：1）量化孕产妇肥胖引起的肾脂质代谢变化，2）确定孕产妇脂质暴露后肾脏代谢中蛋白质过度乙酰化的功能后果，3）确定SIRT3在调节线粒体对孕产妇营养过剩反应中的潜在作用，以及4）在怀孕和哺乳期间施用有效的抗氧化剂来挽救 发育程序的“脂毒性”。这些研究的结果将为 Jonscher 博士未来的独立研究提供新的蛋白质和代谢靶点，并为代谢疾病传播机制提供新的见解。