Discovery of Bone Formation Genes through Integrative Genomics

通过整合基因组学发现骨形成基因

• 批准号: 8848036
• 负责人: Charles R Farber
• 金额: $ 34.74万
• 依托单位: UNIVERSITY OF VIRGINIA
• 依托单位国家: 美国
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-07-11 至 2017-05-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8848036
• 关键词: Affect; Alleles; Biological; Bone Density; Bone Development; Calcium Channel; Calvaria; Candidate Disease Gene; Cells; Chemicals; Cilia; Complex; Data; Fracture; Gene Expression Profile; Genes; Genetic; Genomics; Heterozygote; Homologous Gene; Human; Immunoprecipitation; In Vitro; Mechanics; Mediating; Messenger RNA; Mus; Osteoblasts; Osteocalcin; Osteocytes; Osteogenesis; Pathway Analysis; Phenotype; Play; Post-Transcriptional Regulation; Proprotein Convertase 1; Protein Binding; Proteins; Quantitative Trait Loci; RNA-Binding Proteins; Regulation; Risk; Role; Series; Signal Pathway; Signal Transduction; Surface; System; Technology; Testing; Tissues; Transcript; Transgenic Organisms; base; bone; bone cell; bone mass; crosslink; gene discovery; genetic approach; genetic variant; in vivo; innovation; microCT; novel; osteoblast differentiation; polycystic kidney disease 1 protein; receptor; research study

DESCRIPTION (provided by applicant): The aim of this proposal is to define the role of Bicaudal-C homolog 1 (Bicc1) in bone. Using an innovative systems genetics approach in the mouse we predicted that Bicc1 was the basis of a BMD quantitative trait locus (QTL). Bicc1 is an RNA-binding protein that has been implicated in the regulation of primary cilia. In this proposal, we demonstrate that jcpk mice, which are heterozygous for a Bicc1 null allele, are osteopenic and that genetic variants in human BICC1 gene are associated with BMD. Moreover, Bicc1 is highly expressed in differentiating osteoblasts and Bicc1 knockdown in primary calvarial osteoblasts impairs differentiation. We also show that Bicc1 regulates Pkd2, which is thought to be a critical component of the primary cilia on osteoblasts. Based on these data we hypothesize that Bicc1 influences BMD through an osteoblast and Pkd2 dependent mechanism. In Specific Aim 1 a series of in vitro and in vivo interaction experiments will be used to determine if the actions of Bicc1 on osteoblast differentiation and BMD are via the regulation of Pkd2 levels. In Specific Aim 2 we will determine if Bicc1 regulates BMD in an osteoblast-specific manner. This will be accomplished by ablating Bicc1 in osteoblasts using the cre-loxP technology and characterizing bone mass using microCT and histomorphometry. Transcriptional network analysis will also be used to further characterize Bicc1 function. The proposed studies will significantly advance our understanding of a novel BMD gene.

描述（由申请人提供）：该提案的目的是定义Bicaudal-C同源物1（BICC1）在骨骼中的作用。使用创新的系统遗传学方法，我们预测BICC1是BMD定量性状基因座（QTL）的基础。 BICC1是一种RNA结合蛋白，与原发性纤毛的调节有关。在该提案中，我们证明了BICC1无效等位基因杂合的JCPK小鼠是骨质减少剂，并且人BICC1基因中的遗传变异与BMD有关。此外，BICC1在分化成骨细胞和原代成骨细胞中的BICC1敲低中高度表达。我们还表明，BICC1调节PKD2，这被认为是成骨细胞中主要纤毛的关键组成部分。基于这些数据，我们假设BICC1通过成骨细胞和PKD2依赖机制影响BMD。在特定目标1中，将使用一系列体外和体内相互作用实验来确定BICC1对成骨细胞分化和BMD的作用是否通过PKD2水平的调节。在特定目标2中，我们将确定BICC1是否以成骨细胞特异性方式调节BMD。这将通过使用CRE-LoxP技术在成骨细胞中烧蚀BICC1来实现，并使用MicroCT和Histormorphormetry来表征骨骼质量。转录网络分析还将用于进一步表征BICC1函数。拟议的研究将大大提高我们对新型BMD基因的理解。

项目成果

Systems genetics: a novel approach to dissect the genetic basis of osteoporosis.

• DOI: 10.1007/s11914-012-0112-5
• 发表时间: 2012-09
• 期刊: CURRENT OSTEOPOROSIS REPORTS
• 影响因子: 4.3
• 作者: Farber, Charles R.

Systems-level analysis of genome-wide association data.

• DOI: 10.1534/g3.112.004788
• 发表时间: 2013-01
• 期刊: G3 (Bethesda, Md.)
• 作者: Farber CR

Contemporary Approaches for Identifying Rare Bone Disease Causing Genes.

• DOI: 10.4248/br201304001
• 发表时间: 2013
• 期刊: Bone research
• 影响因子: 12.7
• 作者: Farber CR;Clemens TL
• 通讯作者: Clemens TL

RhoA determines lineage fate of mesenchymal stem cells by modulating CTGF-VEGF complex in extracellular matrix.

• DOI: 10.1038/ncomms11455
• 发表时间: 2016-04-29
• 期刊: Nature communications
• 影响因子: 16.6
• 作者: Li C;Zhen G;Chai Y;Xie L;Crane JL;Farber E;Farber CR;Luo X;Gao P;Cao X;Wan M
• 通讯作者: Wan M