Regulatory Genomics: BAC-GFP Library of Control Genes

调控基因组学：BAC-GFP 对照基因文库

• 批准号: 7198055
• 负责人: ERIC H DAVIDSON
• 金额: $ 25.49万
• 依托单位: CALIFORNIA INSTITUTE OF TECHNOLOGY
• 依托单位国家: 美国
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-04-01 至 2009-03-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7198055
• 关键词: Appendix; Code; Communities; Complementary DNA; Data; Development; Embryo; Exons; Facility Construction Funding Category; Gene Expression; Gene Transfer; Genes; Genome; Genomics; Green Fluorescent Proteins; Internet; Laboratories; Larva; Letters; Libraries; Maps; Methods; Molecular Profiling; Pattern; Production; Proteins; Protocols documentation; Recombinants; Regulator Genes; Reporter; Research Personnel; Resources; Scientist; Sea Urchins; Site; Standards of Weights and Measures; Strongylocentrotus purpuratus; System; Techniques; Testing; Transcription factor genes; cDNA Library; egg; expression vector; genetic regulatory protein; homologous recombination; interest; programs; tool; transcription factor

DESCRIPTION (provided by applicant): We propose to develop a communal resource of BAC GFP expression vectors of all transcription factors expressed significantly in the embryo of the sea urchin, Strongylocentrotus purpuratus, the genomic sequence of which will go on line shortly. Critically, as shown by our laboratory, BAC GFP recombinants can be injected into eggs and with high efficiency, and they express accurately, capturing the entire cis-regulatory systems intact. This greatly accelerates detailed cis-regulatory analyses. These recombinants can also be used to introduce exogenous regulatory gene products in temporally and spatially restricted patterns within the embryo and larva. Both of these applications will greatly enhance analysis of how the genomic control systems which direct expression of regulatory genes prescribe early development. Specifically, we propose to isolate BAC recombinants for all relevant transcription factors (-100-200) in which the gene of interest is centrally located within the clone, and then to use standard homologous recombination techniques to replace the first exon of the endogenous gene with the coding sequence of the GFP reporter. An ongoing project within our laboratory has already established the expression profiles of most of the pertinent genes. We will then employ our methods for high throughput production of BAC-GFP recombinants in exon l of each gene, and build and authenticate each construct. GFP expression directed by each BAC recombinant will be analyzed to confirm faithful recapitulation of endogenous gene expression. We will also make BAC recombinants for any other gene encoding any kind of protein that scientists in the community may request. All information needed by other investigators to facilitate access and promote the use of these tools will be made available on the Sea Urchin Genome web site that is currently administrated by our laboratory. Numerous letters from outside investigators attesting interest in this facility are included as an Appendix to this application.

描述（由申请人提供）：我们建议开发一种BAC GFP表达载体的公共资源，该载体包含在海胆（Strongylocentrotus purpuratus）胚胎中显著表达的所有转录因子，其基因组序列将很快上线。关键的是，正如我们的实验室所示，BAC GFP重组体可以高效地注射到鸡蛋中，并且它们准确表达，完整地捕获整个顺式调控系统。这大大加速了详细的顺式监管分析。这些重组体也可用于在胚胎和幼虫内以时间和空间限制的模式引入外源调控基因产物。这两个应用将大大加强分析基因组控制系统，直接表达的调控基因规定早期发展。具体地，我们提出分离所有相关转录因子（~ 100 - 200）的BAC重组体，其中感兴趣的基因位于克隆内的中心，然后使用标准同源重组技术用GFP报告基因的编码序列替换内源基因的第一外显子。我们实验室正在进行的一个项目已经建立了大多数相关基因的表达谱。然后，我们将采用我们的方法在每个基因的外显子1中高通量产生BAC-GFP重组体，并构建和鉴定每个构建体。将分析由每个BAC重组体指导的GFP表达，以确认内源基因表达的忠实再现。我们还将为社区科学家可能要求的编码任何类型蛋白质的任何其他基因制造BAC重组体。其他研究人员所需的所有信息，以方便访问和促进使用这些工具将提供在海胆基因组网站，目前由我们的实验室管理。本申请的附录中包含了许多来自外部研究者的信件，证明了对该机构的兴趣。