Cardiac-Cell Mechanics at the Single-Cell Level: Properties and Interactions

单细胞水平的心脏细胞力学：属性和相互作用

基本信息

批准号：
7587559
负责人：
Delphine Dean
金额：
$ 15.76万
依托单位：
CLEMSON 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：
2009-07-01 至 2014-06-30
项目状态：
已结题

来源：
https://reporter.nih.gov/project-details/7587559
关键词：
Actins Address Adult Affect Animals Antibodies Atomic Force Microscopy B-Lymphocytes Biochemistry Biological Assay Biomedical Engineering Cadherins Cardiac Cardiac Myocytes Cell Communication Cell Culture Techniques Cell Therapy Cell physiology Cells Cellular biology Characteristics Coculture Techniques Collagen Complement Complex Computer Simulation Confocal Microscopy Connexins Coupling Cytoskeleton Data Defect Development Disease Educational workshop Electrical Engineering Engineering Equilibrium Extracellular Matrix Extracellular Matrix Proteins Fibroblasts Fibronectins Funding Future Gel Goals Hand Heart Heart Diseases Image Imaging Techniques In Vitro Individual Injury Knowledge Laminin Measurement Measures Mechanical Stress Mechanics Mentors Microtubules Modeling Molecular Molecular Biology Motion Muscle Cells Myocardial Infarction Nature Pathologic Processes Pathology Pattern Physiological Procedures Process Property Proteins Pump Rattus Regenerative Medicine Research Research Personnel Research Training Signal Transduction Solid South Carolina Stress Structure System Techniques Testing Theoretical model Time Tissue Engineering Tissues Touch sensation Traction Training Training Technics United States National Institutes of Health Universities Variant Work base cell type design experience in vivo mechanical behavior nanoindentation nanoscale polyacrylamide gels predictive modeling programs repaired scaffold skills three dimensional structure

项目摘要

DESCRIPTION (provided by applicant): This proposal describes a five-year training and research plan to broaden the Pi's electrical engineering background and help her gain experience in cardiac cell biology. To achieve this, the PI (Clemson University) will work closely with her mentors, Dr. Naren Vyavahare at Clemson University and Dr. Thomas Borg and Dr. Edie Goldsmith, at the University of South Carolina. The training plan includes 1) coursework in cell biology and biochemistry, 2) hands-on experimental technique training in cardiac cell culture and molecular biology assays, and 3) professional development activities through workshops and networking opportunities. The goal of this training to is allow the PI to gain the skills necessary to apply for independent NIH funding (e.g., R01) and to allow her to become a well-balanced biomedical engineering researcher. To complement the training, the PI proposes a research plan aimed at combining her engineering expertise with the cardiac cell biology techniques in which she will train. The complex interplay of cell function and mechanical stresses is important for many physiological and pathological processes, such as defects and diseases in mechanically active tissues like the heart. A solid understanding of this relationship would enable better design of in vitro constructs that could be used for tissue-engineered treatment of mechanically active tissues. Presently, the nature of these interactions is not fully understood, largely due to limitations in traditional single-cell mechanical measurement techniques. The proposed research focuses on understanding cardiac-cell mechanics and interactions as a function of the microenvironment. First, the mechanical properties of cardiomyocytes and fibroblasts as a function of the extracellular matrix will be assessed using atomic force microscopy. Then, the effect of cardiomyocyte-fibroblast interactions on cellular mechanics will be determined. Finally, structure-based cell-mechanics models will be built that will enable the use of data from imaging techniques to predict cardiac-cell mechanical properties. The long-term goal of this proposal is to better understand the mechanical coupling of cardiac cells. This understanding is critical for building effective micro- to macroscale models of cardiac tissue function, which is the key for developing in vivo repair strategies based on regenerative medicine.

描述（由申请人提供）：该建议描述了一项为期五年的培训和研究计划，以扩大PI的电气工程背景，并帮助她获得心脏细胞生物学的经验。为了实现这一目标，PI（Clemson University）将与她的导师，克莱姆森大学的Naren Vyavahare博士以及南卡罗来纳大学的Thomas Borg博士和Thomas Borg博士和Edie Goldsmith博士合作。培训计划包括1）细胞生物学和生物化学课程，2）心脏细胞培养和分子生物学测定法中动手实验技术培训，以及3）通过研讨会和网络机会的专业发展活动。这项培训的目的是使PI获得申请独立NIH资金（例如R01）所需的技能，并使她成为一名均衡的生物医学工程研究人员。为了补充培训，PI提出了一项研究计划，旨在将其工程专业知识与心脏细胞生物学技术相结合，并将其培训。细胞功能和机械应力的复杂相互作用对于许多生理和病理过程，例如心脏等机械活性组织中的缺陷和疾病很重要。对这种关系的扎实理解将使可以更好地设计体外构建体，这些构建体可用于机械活性组织的组织工程处理。目前，这些相互作用的性质尚未完全理解，这主要是由于传统的单细胞机械测量技术的局限性。拟议的研究重点是理解心脏机械和相互作用作为微环境的函数。首先，将使用原子力显微镜评估心肌细胞和成纤维细胞的机械性能作为细胞外基质的函数。然后，将确定心肌细胞纤维细胞相互作用对细胞力学的影响。最后，将建立基于结构的细胞力学模型，以便能够从成像技术中使用数据来预测心脏细胞机械性能。该提案的长期目标是更好地了解心脏细胞的机械耦合。这种理解对于建立心脏组织功能的有效微观模型至关重要，这是开发基于再生医学的体内维修策略的关键。