Alpha-1-Adrenergic Receptor Subtypes in the Cells of the Human Heart

人类心脏细胞中的 Alpha-1-肾上腺素能受体亚型

• 批准号: 7919951
• 负责人: Brian C Jensen
• 金额: $ 13.24万
• 依托单位: UNIV OF NORTH CAROLINA CHAPEL HILL
• 依托单位国家: 美国
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2014-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7919951
• 关键词: Address; Affect; Agonist; American; Animal Model; Animals; Area; Attention; Binding; Biological Assay; Biology; California; Cardiac; Cardiac Myocytes; Cardiology; Catecholamines; Cell Death; Cells; Cessation of life; Clinical; Coronary; Coronary artery; Data; Development; Disease; Drug or chemical Tissue Distribution; Endothelial Cells; Fibroblasts; Fibrosis; Fostering; Foundations; Goals; Heart; Heart Hypertrophy; Heart failure; Human; Hypertrophy; Institution; Internal Medicine; Investigation; Ischemic Preconditioning; Knockout Mice; Knowledge; Laboratories; Mediating; Medical center; Medicine; Mentors; Molecular; Mus; Muscle Cells; Myocardium; Physicians; Physiological; Play; Principal Investigator; Process; Research; Research Personnel; Resources; Role; Sampling; San Francisco; Science; Scientist; Smooth Muscle; Smooth Muscle Myocytes; System; Testing; Tissue Banking; Tissue Banks; Tissue Model; Tissues; Toxic effect; Training; Training Programs; Universities; Work; abstracting; alpha-1 adrenergic receptors; animal data; career; career development; cell type; design; experience; heart cell; mouse model; novel; programs; receptor; skills; success; tool; vasoconstriction

DESCRIPTION (provided by applicant): This proposal outlines a 5-year training plan designed to equip the applicant with tools that will foster his success as an academic investigator with a focus on translational heart failure (HF) research. He has completed rigorous clinical training in both internal medicine and cardiology and has spent the past two years acquiring experience in molecular cardiology in the mentor's laboratory. He is now poised for a career in academic medicine, and the proposed program offers an exceptional opportunity to promote his development into an independent physician-scientist. The mentor, Dr. Paul Simpson, will oversee the project and the career development of the applicant. Dr. Simpson is highly respected in the field of molecular cardiology and internationally-recognized for his contributions to our understanding of cardiac hypertrophy and alpha-1-adrenergic receptor (AR) biology. He also is a trained cardiologist who has guided the successful development of many physician-scientists, hence he is a perfect mentor for this project. UCSF is an ideal setting for the proposed training program, offering expertise in nearly every area of biomedical science, and there is a deep commitment from the institution to the development of the applicant as an independent investigator. The research plan follows naturally from the applicant's recent novel work identifying the tissue distribution of the 3 alpha-1-AR subtypes in the human heart. Abundant data from animal studies, including knockout mouse models created by the mentor, show that the alpha-1 A and alpha-IB subtypes play beneficial roles in the heart and protect against HF. Surprisingly, the function of the human cardiac alpha-1-AR subtypes is unknown, and alpha-1-ARs have never been studied in human heart cells. To address these significant gaps in our knowledge, we propose the following 3 Specific Aims: (I) Maintain and expand the UCSF/San Francisco VA Human Heart Tissue Bank; (M) Identify the alpha-1-AR subtypes in myocytes and fibroblasts from non-failing and failing human hearts, and test their function using isolated cell and whole tissue models; (III) Identify the functional alpha-1-AR subtypes in human coronary smooth muscle and endothelial cells. Collectively these Aims will establish a broader understanding of human cardiac alpha-1-AR biology and the mechanisms of HF. This training program will provide the applicant with valuable skills that will allow him to use human systems to test hypotheses generated in animal models and will serve as the foundation for a successful career in translational HF investigation. RELEVANCE: Abundant data from cell and animal studies show that alpha-1-adrenergic receptors (ARs) play beneficial roles in the heart and protect against heart failure (HF), but little is known about these receptors in the human heart. HF is a major clinical problem in the US, and new treatments are badly needed. The proposed work will expand significantly our knowledge of alpha-1-ARs in the human heart and is essential to the long-term aim of the project, which is the development of a novel therapy for HF targeting alpha-1-ARs. (End of abstract)

描述(由申请者提供)：本建议书概述了一项为期5年的培训计划，旨在为申请者提供工具，帮助他成为一名专注于转化性心力衰竭(HF)研究的学术研究人员。他完成了内科和心脏病学方面的严格临床培训，并在过去两年里在导师的实验室获得了分子心脏病学方面的经验。他现在准备从事学术医学事业，拟议中的项目提供了一个难得的机会，促进他发展成为一名独立的内科科学家。导师保罗·辛普森博士将监督该项目和申请者的职业发展。辛普森博士在分子心脏病学领域备受尊敬，并因其对我们了解心肌肥厚和α-1-肾上腺素能受体(AR)生物学的贡献而受到国际认可。他也是一位训练有素的心脏病专家，曾指导过许多内科科学家的成功发展，因此他是这个项目的完美导师。加州大学旧金山分校是拟议中的培训计划的理想环境，提供几乎所有生物医学领域的专业知识，该机构对申请者作为独立研究人员的发展有着坚定的承诺。这项研究计划自然源于申请人最近的一项新工作，该工作确定了人体心脏中3个α-1-AR亚型的组织分布。来自动物研究的大量数据，包括导师创建的基因敲除小鼠模型，表明α-1A和α-IB亚型在心脏中起到有益的作用，并防止心衰。令人惊讶的是，人类心脏α-1-AR亚型的功能尚不清楚，而且α-1-AR从未在人类心脏细胞中被研究过。为了解决我们知识上的这些重大差距，我们提出了以下三个具体目标：(I)维护和扩大UCSF/San Francisco VA人类心脏组织库；(M)鉴定非衰竭和衰竭心脏的肌细胞和成纤维细胞中的α-1-AR亚型，并使用分离细胞和全组织模型测试它们的功能；(Iii)鉴定人冠状动脉平滑肌和内皮细胞的功能性α-1-AR亚型。总而言之，这些目标将建立对人类心脏α-1-AR生物学和HF机制的更广泛的理解。该培训计划将为申请者提供宝贵的技能，使他能够使用人类系统来测试动物模型中产生的假设，并将作为翻译研究领域成功职业生涯的基础。相关性：来自细胞和动物研究的大量数据表明，α-1-肾上腺素能受体(ARs)在心脏中发挥有益的作用，并预防心力衰竭(HF)，但对人类心脏中的这些受体知之甚少。心力衰竭在美国是一个主要的临床问题，迫切需要新的治疗方法。这项拟议的工作将极大地扩展我们对人类心脏中α-1-ARs的了解，并对该项目的长期目标至关重要，该项目的长期目标是开发一种针对α-1-ARs的新型治疗方法。(摘要结束)