Analysis of Homologous DNA Recombination using the chicken DT40 B cell line
使用鸡 DT40 B 细胞系进行同源 DNA 重组分析
基本信息
- 批准号:17390076
- 负责人:
- 金额:$ 9.09万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B)
- 财政年份:2005
- 资助国家:日本
- 起止时间:2005 至 2006
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
In higher eukaryotic cells, transfected DNA is occasionally integrated into the genome predominantly through random integration. A novel exception of this rule is chicken B lymphocyte lines, including DT40 cells, in which random integration and targeted one occur with similar frequencies. The goal of this project is to identify the molecular mechanisms underlying the efficient gene targeting in DT40 cells. While the mechanisms have not yet clarified, we have revealed a role of some factors in Homologous DNA Recombination (HR), as delineated below.(1) Yeast Rad18, E3 ubiquitin ligase is essential for postreplicational repair (PRR), but is not involved in HR. We found that Rad18 suppresses the toxic effect of nonhomolgous end-joining, and thereby facilitates HR (Saberi et al., 2007).(2) Ubc13, E3 ubiquitin ligase is involved in a type of PRR, but not in HR in lower eukaryotes. We found that Ubc13 plays a critical role in an initial step of HR dependent DSB repair (Zhao et al., 2007).(3) FBH1 seems to prevent aberrant HR by suppressing the assembly of Rad51 at DNA damage in the fission yeast. In DT40 cells, we found that FBH1 does not affect Rad51 accumulation, but acts in parallel with Bloom helicase to suppress HR at a late step (Kohzaki et al., 2007).
在高等真核细胞中,转染的DNA偶尔主要通过随机整合整合到基因组中。这一规则的一个新的例外是鸡B淋巴细胞系,包括DT 40细胞,其中随机整合和靶向整合以相似的频率发生。本项目的目标是确定DT 40细胞中有效基因靶向的分子机制。虽然机制尚未阐明,但我们已经揭示了一些因素在Homoprotein DNA扩增(HR)中的作用,如下所述。(1)酵母Rad18,E3泛素连接酶是复制后修复(PRR)所必需的,但不参与HR。我们发现Rad18抑制非同源末端连接的毒性作用,从而促进HR(Saberi等人,2007年)。(2)Ubc13,E3泛素连接酶在低等真核生物中参与一种PRR,但不参与HR。我们发现Ubc13在HR依赖性DSB修复的初始步骤中起关键作用(Zhao等人,2007年)。(3)FBH1似乎通过抑制Rad51在分裂酵母中DNA损伤处的组装来防止异常HR。在DT 40细胞中,我们发现FBH1不影响Rad51积累,但与Bloom解旋酶平行作用以在后期抑制HR(Kohzaki等人,2007年)。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Differential usage of non-homologous end-joining and homologous recombination in double strand break repair
- DOI:10.1016/j.dnarep.2006.05.022
- 发表时间:2006-09-08
- 期刊:
- 影响因子:3.8
- 作者:Sonoda, Eiichiro;Hochegger, Helfrid;Takeda, Shunichi
- 通讯作者:Takeda, Shunichi
Ubiquitin-binding motifs in REV1 protein are required for its role in the tolerance of DNA damage
- DOI:10.1128/mcb.01118-06
- 发表时间:2006-12-01
- 期刊:
- 影响因子:5.3
- 作者:Guo, Caixia;Tang, Tie-Shan;Friedberg, Errol C.
- 通讯作者:Friedberg, Errol C.
Involvement of vertebrate Polkappa in translesion DNA synthesis across DNA monoalkylation damage.
脊椎动物 Polkappa 参与跨 DNA 单烷基化损伤的跨损伤 DNA 合成。
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:Takenaka K;Ogi T;Okada T;Sonoda E;Guo C;Friedberg EC;Takeda S
- 通讯作者:Takeda S
REV1 protein interacts with PCNA: Significance of the REV1 BRCT domain in vitro and in vivo
- DOI:10.1016/j.molcel.2006.05.038
- 发表时间:2006-07-21
- 期刊:
- 影响因子:16
- 作者:Guo, Caixia;Sonoda, Eiichiro;Friedberg, Errol C.
- 通讯作者:Friedberg, Errol C.
RAD18 and poly(ADP-ribose) polymerase independently suppress the access of nonhomologous end joining to double-strand breaks and facilitate homologous recombination-mediated repair
- DOI:10.1128/mcb.01243-06
- 发表时间:2007-04-01
- 期刊:
- 影响因子:5.3
- 作者:Saberi, Alihossein;Hochegger, Helfrid;Takeda, Shunichi
- 通讯作者:Takeda, Shunichi
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TAKEDA Shunichi其他文献
TAKEDA Shunichi的其他文献
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{{ truncateString('TAKEDA Shunichi', 18)}}的其他基金
Development of a method for increasing gene-targeting efficiency in human cells
开发提高人类细胞基因靶向效率的方法
- 批准号:
25650006 - 财政年份:2013
- 资助金额:
$ 9.09万 - 项目类别:
Grant-in-Aid for Challenging Exploratory Research
Comprehensive Analysis of Ubiquitome during DNA damage response
DNA损伤反应过程中泛素组的综合分析
- 批准号:
23659152 - 财政年份:2011
- 资助金额:
$ 9.09万 - 项目类别:
Grant-in-Aid for Challenging Exploratory Research
Analysis of DNA damage response using gene-disrupted DT40 clones.
使用基因破坏的 DT40 克隆分析 DNA 损伤反应。
- 批准号:
20241012 - 财政年份:2008
- 资助金额:
$ 9.09万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
Reverse Genetic Analysis of DNA Damage responses in the Avian DT40 Cell Line and the Medaka Fish
鸟类 DT40 细胞系和青鳉鱼 DNA 损伤反应的反向遗传分析
- 批准号:
17013039 - 财政年份:2005
- 资助金额:
$ 9.09万 - 项目类别:
Grant-in-Aid for Scientific Research on Priority Areas
Analysis of genetic interactions of DNA repair pathways
DNA修复途径的遗传相互作用分析
- 批准号:
13480228 - 财政年份:2001
- 资助金额:
$ 9.09万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Molecular Analysis of homologous recombination-mediated gene trageting
同源重组介导的基因定位的分子分析
- 批准号:
13557010 - 财政年份:2001
- 资助金额:
$ 9.09万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Reverse Genetic Analysis of Homologous DNA Recombination in Higher Eukaryotes
高等真核生物中同源 DNA 重组的反向遗传分析
- 批准号:
10480192 - 财政年份:1998
- 资助金额:
$ 9.09万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Analysis of homologous DNA recombination using the chicken B-lymphocyte line
使用鸡 B 淋巴细胞系进行同源 DNA 重组分析
- 批准号:
10044274 - 财政年份:1998
- 资助金额:
$ 9.09万 - 项目类别:
Grant-in-Aid for Scientific Research (B).
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