NOVEL EXTRACELLULAR MATRIX PROTEIN IN FETAL HEART

该研究计划提出了克隆，表达特征， 一种新的细胞外基质蛋白的初步功能分析 发育中的老鼠心脏 编码这种蛋白质的基因（基因X）最初 是由候选人在工作时在人胎儿肾上腺中发现的 赞助商实验室 令人高兴的是，最近的观察表明， X基因在人胎心中有明显表达。 蛋白 同源性分析表明，X基因与 蛋白质和充分表征的细胞外基质蛋白，包括 纤维连接蛋白和腱生蛋白，这两种蛋白似乎在心脏病中很重要。 形态发生 人类基因产物的研究进展已经被 缺乏用于分析的高质量人体组织的可用性。 有 强有力的推定证据表明，X基因存在，并在胎儿中表达， 鼠心 对X基因功能的更全面了解 蛋白质授权开发模型动物系统，这是一个目标， 提案将完成。

The research plan proposes the cloning, characterization of expression and initial functional analysis of a novel extracellular matrix protein in the developing rat heart. The gene encoding this protein (gene X) initially was identified in the human fetal adrenal by the candidate while working in the sponsors laboratory. Happily, recent observations have shown that there is significant gene X expression in human fetal heart. Protein homology analysis has demonstrated significant homology between the gene X protein and well-characterized extracellular matrix proteins, including fibronectin and tenascin, both of which appear to be important in cardiac morphogenesis. Progress on the human gene product has been slowed by the lack of availability of high quality human tissues for analysis. There is strong presumptive evidence that gene X exists and is expressed in fetal rat heart. A more complete understanding of the function of the gene X protein mandates development of a model animal system, a goal which this proposal will accomplish.