Molecular Basis of Bladder Organogenesis

膀胱器官发生的分子基础

基本信息

批准号：
7171588
负责人：
PRAMOD P REDDY
金额：
$ 12.5万
依托单位：
CINCINNATI CHILDRENS HOSP MED CTR
依托单位国家：
美国
项目类别：
财政年份：
2005
资助国家：
美国
起止时间：
2005-02-01 至 2010-01-31
项目状态：
已结题

来源：
https://reporter.nih.gov/project-details/7171588
关键词：
Amphibia Animal Model Antibodies Apoptosis Appearance Atlases Biological Assay Biological Models Biological Process Bladder Bladder Diseases Bladder Dysfunction Bladder Exstrophy Bladder Tissue Bladder Urothelium Caliber Candidate Disease Gene Cataloging Catalogs Characteristics Child Classification Clinical Collaborations Connective Tissue Data Databases Development Developmental Biology Disease Dissection Distal Diverticulum Early Diagnosis Embryo Embryonic Development Endoderm Epithelial Epithelium Event Exhibits Experimental Animal Model Fertilization Fetal Development Functional disorder Future Gene Expression Gene Family Genes Genetic Genitourinary system Goals Grant Growth and Development function Heart Hindgut Histologic Histology Human In Situ Hybridization Incidence Incontinence Infant Infection Injection of therapeutic agent Kidney Kidney Failure Knowledge Larva Lead Ligands Live Birth Lower urinary tract Lung Mediating Mentors Mesenchymal Mesenchyme Modeling Molecular Molecular Biology Molecular Biology Techniques Molecular Profiling Morbidity - disease rate Morphogenesis Mothers Natural regeneration Neurogenic Bladder Operative Surgical Procedures Organ Organogenesis Outcome Pancreas Pathogenesis Pathway interactions Patients Pattern Phase Play Polymerase Chain Reaction Protein Biosynthesis Proteins Quality of life Reconstructive Surgical Procedures Reflux Regulation Relative (related person)Research Research Project Grants Research Proposals Reverse Transcriptase Polymerase Chain Reaction Role Screening Result Signal Transduction Signal Transduction Pathway Smooth Muscle Staging Staining method Stains Standards of Weights and Measures Stem cells Structure System Techniques Testing Therapeutic Intervention Thinking Time Tissue-Specific Gene Expression Tissues Transgenic Organisms Undifferentiated Urethra Urinary Incontinence Urinary tract Urinary tract infection Urine Urothelium Vertebrates Western Blotting Xenopus Xenopus oocyte base career cell growth clinically significant day detrusor muscle gene function high throughput screening improved innovation insight interest loss of function mutant novel prevent programs promoter receptor representational difference analysis research study response to injury urinary urinary bladder epithelium

项目摘要

DESCRIPTION (provided by applicant): Up to 1% of all human infants are born with some form of genitourinary abnormality, with a large proportion of them having involvement of the urinary bladder. Abnormal structure and/or function of the bladder results in significant morbidity, including infections, incontinence and even renal insufficiency. Because of its clinical significance, we have begun to study the molecular basis of organogenesis of the urinary bladder. Organogenesis requires the orderly execution of programs that regulate temporally and spatially defined cellular differentiation and proliferation. Surprisingly very little is actually known about the events that occur during normal bladder organogenesis. This is in part due to the lack of an appropriate experimental animal model with which to study the development of the fetal bladder. The long term goal of this proposal is to elucidate the molecular basis of urinary bladder organogenesis in vertebrates, using Xenopus as an experimental system. In our preliminary experiments, we have demonstrated that Xenopus is an ideal model for this proposal since the urinary bladder develops in the larval stage and can be readily accessed. Additionally, we have discovered that the Uroplakin family of genes is expressed very early in embryogenesis and bladder organogenesis. This is significant because Uroplakins have long been considered markers of terminal urothelial differentiation. This proposal seeks to extend our understanding of the molecular regulation of bladder organogenesis, and the role that Uroplakin plays in this developmental pathway with the following specific aims: (1) Identify and characterize the genes involved in bladder organogenesis; (2) Examine the mechanism(s) by which the genes identified in specific aim 1 regulate bladder organogenesis; (3) To determine the function of the Uroplakin genes in early embryogenesis and bladder organogenesis. Through these studies, the candidate will delineate the signal transduction pathways that regulate bladder organogenesis. The results of this proposal will significantly broaden our insights into bladder development, growth, regeneration and response to injury. This knowledge will be utilized to enhance the outcomes of current therapeutic interventions and improve the quality of life for patients with congenital or acquired bladder dysfunction.

描述（由申请人提供）：高达 1% 的人类婴儿出生时患有某种形式的泌尿生殖系统异常，其中很大一部分涉及膀胱。膀胱结构和/或功能异常会导致显着的发病率，包括感染、失禁甚至肾功能不全。由于其临床意义，我们已经开始研究膀胱器官发生的分子基础。器官发生需要有序执行调节时间和空间上定义的细胞分化和增殖的程序。令人惊讶的是，人们对正常膀胱器官发生过程中发生的事件实际上知之甚少。部分原因是缺乏合适的实验动物模型来研究胎儿膀胱的发育。该提案的长期目标是使用非洲爪蟾作为实验系统，阐明脊椎动物膀胱器官发生的分子基础。在我们的初步实验中，我们已经证明非洲爪蟾是该提议的理想模型，因为膀胱在幼虫阶段发育并且可以很容易地接近。此外，我们发现 Uroplakin 基因家族在胚胎发生和膀胱器官发生的早期就表达。这很重要，因为尿斑蛋白长期以来一直被认为是终末尿路上皮分化的标志物。该提案旨在扩展我们对膀胱器官发生的分子调控以及 Uroplakin 在这一发育途径中所发挥的作用的理解，其具体目标如下：（1）识别和表征参与膀胱器官发生的基因； (2) 检查特定目标 1 中鉴定的基因调节膀胱器官发生的机制； (3)确定Uroplakin基因在早期胚胎发生和膀胱器官发生中的功能。通过这些研究，候选人将描绘调节膀胱器官发生的信号转导途径。该提案的结果将显着拓宽我们对膀胱发育、生长、再生和损伤反应的认识。这些知识将用于增强当前治疗干预的效果，并改善先天性或后天性膀胱功能障碍患者的生活质量。