Genetic and Cellular Mechanisms of Temporal Lobe Epilepsy

颞叶癫痫的遗传和细胞机制

• 批准号: 10661839
• 负责人: Sattar Khoshkhoo
• 金额: $ 24.08万
• 依托单位: BRIGHAM AND WOMEN'S HOSPITAL
• 依托单位国家: 美国
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-07-15 至 2027-04-30
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/10661839
• 关键词: Address; Advisory Committees; Affect; Autopsy; BRAF gene; Biomedical Research; Blood Vessels; Boston; Brain; Cell physiology; Cells; Chronic; Complement; Conceptions; Cortical Dysplasia; DNA; DNA Sequence Alteration; DNA analysis; Data; Development; Diagnostic; Disease; Environment; Epilepsy; Epileptogenesis; Event; Excision; FRAP1 gene; Fostering; Freezing; Ganglioglioma; Gene Expression; Genes; Genetic; Genetic Research; Genetic Transcription; Genomics; Goals; Hippocampus; Hospitals; Human; Human Genetics; In Situ; Individual; Institution; Lesion; Link; MAP Kinase Gene; MAPK Signaling Pathway Pathway; Magnetic Resonance Imaging; Mediating; Medical; Mentors; Molecular; Morbidity - disease rate; Mosaicism; Mutation; N-Methyl-D-Aspartate Receptors; Neurologic; Neurology; Neurons; Operative Surgical Procedures; Partial Epilepsies; Pathogenesis; Pathogenicity; Pathway interactions; Patients; Pediatric Hospitals; Persons; Physicians; Play; Positioning Attribute; Program Development; Publishing; RNA; RNA analysis; Ras/Raf; Refractory; Reporting; Research; Research Personnel; Research Training; Resected; Resistance; Resources; Rodent; Role; Scientist; Sclerosis; Seizures; Signal Transduction; Somatic Mutation; Specificity; Techniques; Temporal Lobe; Temporal Lobe Epilepsy; Tissues; Training; Trauma; United States National Institutes of Health; Variant; Woman; brain tissue; career; career development; cell type; clinical training; comparative; deep sequencing; diagnostic strategy; experience; frontal lobe; gain of function; gene panel; genetic variant; medical schools; mind control; mouse model; mutant; nervous system disorder; neuropsychiatric disorder; neurotrophic factor; next generation sequencing; novel; overexpression; professor; programs; single nucleus RNA-sequencing; skills; transcriptome; transcriptome sequencing; tumor

PROJECT SUMMARY / ABSTRACT This NIH K08 proposal, describes a five-year career development program in epilepsy genetics research. Through this program, Dr. Khoshkhoo will receive training in human genetics, the experimental and analytic aspects of next generation sequencing, and single cell genomics. This new skillset will complement Dr. Khoshkhoo’s prior research and clinical training, and ideally position him to transition to an independent investigator position studying the functional and molecular mechanisms of genetic variants in epilepsy. The institutional resources available through Brigham and Women’s Hospital (BWH), Boston Children’s Hospital (BCH), and Harvard Medical School (HMS) are world class and they provide the ideal environment to foster the career developmental of young physician-scientists. Dr. Khoshkhoo’s mentor for this proposal, Dr. Christopher Walsh (a Professor of Neurology at HMS and HHMI Investigator at BCH), is a leader in genetics and genomics of human neurologic diseases. Dr. Walsh has a long track record for mentoring other trainees to successful careers in biomedical research. In addition, Dr. Khoshkhoo has assembled a group of collaborators with complementary expertise, and an Advisory Committee with extensive experience in mentoring physician- scientists to develop independent research programs. The primary scientific objective of this proposal is to identify the role of pathogenic post-zygotic (somatic) mutations (variants) in temporal lobe epilepsy (TLE), and to characterize the cell-type specific and transcriptional mechanisms through which these variants contribute to the development of epilepsy. Dr. Khoshkhoo provides pilot data indicating that a subset of sporadic TLE cases harbor likely pathogenic somatic variants, which supports his central hypothesis that genetic and transcriptional dysregulation caused by somatic variants plays a key role in TLE pathogenesis. This proposal will systemically examine surgical TLE resections for the presence of these somatic variants and investigate their cellular and transcriptional mechanisms. To achieve these objectives, a combination of ultra-deep gene panel sequencing, Parallel RNA and DNA analysis after Deep sequencing (PRDD-seq), and single nucleus RNA sequencing (snRNA-seq) will be employed. These state of the art strategies will aim to: (1) identify pathogenic somatic variants in surgically resected hippocampal tissue from TLE patients and post-mortem neurotypical individuals; (2) determine the cell-type(s) of mutant cells in TLE cases with known pathogenic somatic variants; and (3) examine the downstream gene expression changes caused by these variants in TLE. These studies will not only help establish somatic variants as a novel mechanism for TLE pathogenesis, but also investigate their cellular and molecular mechanisms in situ. Overall, this proposal introduces a new conceptual and experimental framework for studying TLE and the findings may have immediate diagnostic and treatment implications.

项目摘要/摘要 这份NIH K08提案描述了癫痫遗传学研究的五年职业发展计划。 通过这个项目，Khoshkhu博士将接受人类遗传学、实验和分析方面的培训 下一代测序和单细胞基因组学方面。这一新技能将补充Dr。 Khoshkhu之前的研究和临床培训，并理想地使他过渡到独立的 研究癫痫中基因变异的功能和分子机制的研究人员职位。 通过布里格姆妇女医院(BWH)、波士顿儿童医院(BWH)提供的机构资源 医院(BCH)和哈佛医学院(HMS)都是世界级的，它们为 促进青年内科科学家的职业发展。Khoshkhu博士是这项提议的导师。 克里斯托弗·沃尔什(HMS神经学教授、BCH HHMI研究员)是遗传学领域的领军人物 以及人类神经系统疾病的基因组学。沃尔什博士长期指导其他受训人员 在生物医学研究方面取得成功的职业。此外，霍什霍博士还召集了一组合作者 具有互补的专业知识，以及一个在指导医生方面具有丰富经验的咨询委员会- 科学家制定独立的研究计划。 这项建议的主要科学目标是确定致病合子后(躯体)的作用。 颞叶癫痫(TLE)的突变(变体)，并表征细胞类型特异性和 这些变异体参与癫痫发生的转录机制。Dr。 Khoshkhoo提供的试点数据表明，散发性TLE病例的子集可能含有致病性躯体 这支持了他的中心假说，即基因和转录失调是由 体细胞变异在TLE的发病机制中起关键作用。这项提案将系统地检查外科TLE 切除这些体细胞变异体并研究它们的细胞和转录 机制。 为了实现这些目标，超深层基因面板测序、并行RNA和DNA 深度测序后分析(PRDD-SEQ)和单核RNA测序(SnRNA-SEQ)将 受雇的。这些最先进的策略将旨在：(1)在外科手术中识别致病的体细胞变异 切除TLE患者和死后神经典型个体的海马区组织；(2)测定 已知致病体细胞变异的TLE病例的细胞类型(S)突变细胞；以及(3)检查 TLE中这些变异引起的下游基因表达的变化。这些研究不仅有助于 建立体细胞变异作为TLE发病的新机制，但也要研究它们的细胞和 原位分子机制。总体而言，这项提议引入了一个新的概念和实验框架。 对TLE的研究和发现可能具有直接的诊断和治疗意义。