Analysis of Spatial & Temporal Dependence of Rhombic Lip Derivatives on Math1

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• 批准号: 7364180
• 负责人: STEPHEN M MARICICH
• 金额: $ 2.84万
• 依托单位: BAYLOR COLLEGE OF MEDICINE
• 依托单位国家: 美国
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-03-01 至 2008-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7364180
• 关键词: Advisory Committees; Affect; Autistic Disorder; BHLH Protein; Basic Science; Behavioral; Birth; Brain Stem; Breathing; Bromodeoxyuridine; Cell Nucleus; Cell division; Cells; Cerebellum; Code; Condition; Cues; DNA Binding; Data; Dependence; Development; Disease; Disruption; Ear Nervous System; Embryo; Embryonic Development; Embryonic Nervous System; Environment; Epithelium; Failure; Gene Expression; Genes; Goals; Human; Knock-out; Label; Laboratory Research; Lip structure; Location; Maps; Mediating; Medicine; Mentors; Methods; Morbidity - disease rate; Mus; Neurologic; Neurons; Patients; Phenotype; Physicians; Physiological; Population; Research; Respiration; Role; Running; Scientist; Series; Site; Specific qualifier value; Sudden infant death syndrome; System; Testing; Time; Training; base; behavior test; brain malformation; career; cell type; college; combinatorial; design; hindbrain; insight; malformation; mortality; precursor cell; prevent; research study; respiratory; success; transcription factor

Disruptions of hindbrain development are implicated in multiple human disorders that cause significant morbidity and mortality such as Chiari malformations, sudden infant death syndrome and autism. The Mathl gene encodes a basic helix-loop-helix transcription factor whose function is necessaryfor the creation of multiple neuronal subtypes in the developing hindbrain, including those involved in breathing control. My proposal seeks to understand how Mathl contributes to normal hindbrain development in an effort to better understand derangements that cause serious neurodevelopmental human conditions. My goal is to determine how spatial and temporal cues specify the cellular fates of MafM-lineal cells derived from the rhombic lip. The specific aims of the project are to 1) disrupt Math1function in a spatially- restricted manner to define the sites of origin of various rhombic lip derivatives; 2) determine the time of origin of Ma#77-lineal cells; and 3) selectively eliminate Mathl-dependent cell populations based on time of origin. I will use conditional knockout systemsto test the hypothesis that disruption of Mathl in a spatial- or time-dependent manner causes deletion of specific subsets of neurons, resulting in different phenotypes depending on the cell groups that are affected. This strategy will allow me to construct a spatial and temporal fate map of the murine rhombic lip, pinpoint neurons essential for breathing control, and evaluate physiological and behavioral consequences resulting from loss of specific neuronal subsets in the hindbrain. My overall career goal is to become an independent physician/scientist who focuses on understanding congenital neurological abnormalities. I will spend the majority of my time running a basic research laboratory, but I will also see a select group of patients with brain malformations. My ultimate goal is to characterize and identify genes that are responsible for these abnormalities in the hopes of better understanding what causes them and how they may be effectively prevented or treated, if possible. Baylor College of Medicine provides the perfect environment for my success. My mentor, Dr. Huda Zoghbi, is an internationally known physician/scientist with a tremendous training record. Departmental support of my research career, interaction with a Scientific Advisory Committee, and formal coursework at Baylor and elsewhere will also help me to achieve my goals.

后脑发育的中断与多种人类疾病有关，这些疾病会导致严重的