Functional compatibility of Rho family genes in vivo.
Rho家族基因在体内的功能相容性。
基本信息
- 批准号:15570145
- 负责人:
- 金额:$ 2.11万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2003
- 资助国家:日本
- 起止时间:2003 至 2004
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
We have developed the exchangeable gene trap system. The reporter gene, β-geo, can be replaced into any other DNA of interest through Cre-mutant lox site-specific recombination.The Ayu17-52 mouse line is the Rhoa gene knockout mouse line produced by the exchangeable gene trap method. Rho family proteins are Ras-related small GTPases that regulate a variety of cellular processes. Its function in vivo is still unclear.The purpose of this research project is to clear up the functional compatibility of Rho family genes in vivo.Heterozygous β-geo(Rhoa^<+/geo>) mice showed severe growth retardation, and most of them died in a few weeks after birth.At the first step, Rho1 gene of yeast, one of homologues of mouse Rhoa, was knocked in the trap allele instead of the β-geo gene. Heterozygous Rho1 knock in mice showed no growth retardation. At the second step, human skeletal muscle α actin(HSA) gene promoter was knocked in the trap allele instead of the β-geo gene. At the third step, mouse Rhoc cDNA was knocked in the trap allele instead of the β-geo gene. These replacements could rescue the phenotype of heterozygote. Finaly, we have tested a replacement of reporter gene from β-geo to EGFP.After replacement, the change of the phenotype was observed, too. The phenotype was disappeared completely in heterozygous EGFP(Rhoa^<+/BGFP>) mice. Since the both of β-geo and EGFP gene are expressed quite strongly and ubiquitously, the strong expression of β-geo protein might affect the phenotype severely.Homozygous EGFP(Rhoa^<EGFP/EGFP>) mice show embryonic lethality like as homozygous Rho1 knock in (Rhoa^<Rho1/Rho1>) mice. It means that this is the phenotype of Rhoa protein deficiency. Now, we are investigating if Rhoc replacement might rescue the phenotype of homozygote.
我们开发了可交换的基因捕获系统。报告基因β-geo可以通过Cre突变lox位点特异性重组替换到任何感兴趣的DNA中,Ayu 17 -52小鼠系是通过可交换基因诱捕法产生的Rhoa基因敲除小鼠系。Rho家族蛋白是Ras相关的小GTP酶,其调节多种细胞过程。本研究的目的是阐明Rho家族基因在体内的功能相容性,杂合子β-geo(Rhoa^<+/geo>)小鼠表现出严重的生长迟缓,大多数在出生后几周内死亡,首先敲除小鼠Rhoa同源物之一的酵母Rho 1基因的trap等位基因,以替代β-geo基因。杂合Rho 1敲除小鼠未表现出生长迟缓。第二步,敲除人骨骼肌α肌动蛋白(HSA)基因启动子中的trap等位基因,而不是β-geo基因。在第三步中,敲除小鼠Rhoc cDNA中的陷阱等位基因而不是β-geo基因。这些替换可以挽救杂合子的表型。最后,我们将报告基因从β-geo替换为EGFP,观察替换后细胞表型的变化。在杂合EGFP(Rhoa^<+/BGFP>)小鼠中,表型完全消失。由于β-geo基因和EGFP基因都在小鼠体内广泛表达,因此β-geo蛋白的高表达可能会严重影响其表型,纯合EGFP(Rhoa^<EGFP/EGFP>)小鼠表现出与纯合Rho 1敲入(Rhoa^<Rho 1/Rho 1>)小鼠相似的胚胎致死性。这意味着这是Rhoa蛋白缺乏症的表型。现在,我们正在研究Rhoc替换是否可以挽救纯合子的表型。
项目成果
期刊论文数量(16)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
これを守らないと罰せられます〜2月19日施行! 遺伝子組換え生物等規制法〜
不遵守的话会受到惩罚的~2月19日实施转基因生物管理法~
- DOI:
- 发表时间:2004
- 期刊:
- 影响因子:0
- 作者:Taniwaki;T.;Araki.M.;et al.;荒木 正健
- 通讯作者:荒木 正健
Characterization of an exchangeable gene trap using pU-17 carrying a stop codon-bgeo cassette.
使用携带终止密码子-bgeo 盒的 pU-17 表征可交换基因陷阱。
- DOI:
- 发表时间:2005
- 期刊:
- 影响因子:0
- 作者:Taniwaki;T.;Araki.M.;et al.
- 通讯作者:et al.
Generation of high-affinity antibody against T cell-dependent antigen in ganp gene-transgenic mouse.
在 ganp 基因转基因小鼠中产生针对 T 细胞依赖性抗原的高亲和力抗体。
- DOI:
- 发表时间:2005
- 期刊:
- 影响因子:0
- 作者:N.Sakaguchi;T.Kimura;S.Matsushita;S.Fujimura;J.Shibata;M.Araki;T.Sakamoto;C.Minoda;K.Kuwahara
- 通讯作者:K.Kuwahara
RNA干渉は鶏心筋の一次培養細胞の筋蛋白質トロポニンTの発現を抑制した
RNA 干扰抑制原代培养鸡心肌细胞中肌肉蛋白肌钙蛋白 T 的表达。
- DOI:
- 发表时间:2004
- 期刊:
- 影响因子:0
- 作者:豊田 直二;荒木_正健;他
- 通讯作者:他
Myopathy phenotype in transgenic mice expressing mutated PABPN1 as a model of oculopharyngeal muscular dystrophy
- DOI:10.1093/hmg/ddh017
- 发表时间:2004-01-15
- 期刊:
- 影响因子:3.5
- 作者:Hino, H;Araki, K;Yamamura, K
- 通讯作者:Yamamura, K
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ARAKI Masatake其他文献
ARAKI Masatake的其他文献
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{{ truncateString('ARAKI Masatake', 18)}}的其他基金
Establishment of Cre-driver mouse lines by using the Exchangeable Gene Trap Ckones.
使用可交换基因陷阱 Ckones 建立 Cre-driver 小鼠品系。
- 批准号:
23300159 - 财政年份:2011
- 资助金额:
$ 2.11万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Expression Analysis of the Exchangeable Gene Trap Clones by X-gal Staining
X-gal 染色可交换基因捕获克隆的表达分析
- 批准号:
20300146 - 财政年份:2008
- 资助金额:
$ 2.11万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Development of the in situ RT-PCR method to aim at the analysis of gene trap clones
开发用于分析基因陷阱克隆的原位 RT-PCR 方法
- 批准号:
09680728 - 财政年份:1997
- 资助金额:
$ 2.11万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
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