Reactivation ofhprt on the inactive X chromosome with DNA demethylating agents

Reactivation ofhprt on the inactive X chromosome with DNA demethylating agents
复制标题

用 DNA 去甲基化剂重新激活失活 X 染色体上的 HPRT

DOI:
10.1007/bf01534893
复制
发表时间:
1989
期刊:
Somatic Cell and Molecular Genetics
影响因子:
--
通讯作者:
M. McBurney
M. McBurney
中科院分区:
--
文献类型:
--
作者:
A. Hockey;C. Adra;M. McBurney

文献摘要

参考文献

被引文献

相似文献

女性胚胎癌细胞系C86含有1条活性X染色体和1条非活性X染色体。在甲基亚硝胺诱变后,分离到了一个在活性X染色体上携带突变hprt基因的克隆,命名为C86AGM2。该hprtm等位基因编码一种HPRT酶,该酶具有不到1%的正常酶活性,不耐热,具有改变的等电点。在用去甲基化DNA的药物处理后,C86AGM2细胞中非活性X染色体上的HPRT+基因变得活跃,这取决于HPRT活性的出现,以及正常酶的热变性和电聚焦特性。如果在DNA去甲基化之前诱导C86AGM2细胞分化,则该HPRT+基因不表达。稳定表达hprtm和hprt+基因的C86AGM2细胞分化后均未失活。
The C86 line of female embryonal carcinoma cells contains one active and one inactive X chromosome. Following methylnitrosourea mutagenesis, a clone called C86AGM2 was isolated that carries a mutated hprtgene on the active X chromosome. This hprtmallele encodes an HPRT enzyme that has less than 1% normal enzyme activity, is thermolabile, and has an altered isoelectric point. Following treatment with drugs that demethylate DNA, the hprt+gene from the inactive X chromosome in C86AGM2 cells became active as determined by the appearance of HPRT activity with the thermodenaturation and electrofocusing characteristics of the normal enzyme. No expression of this hprt+gene occurred if C86AGM2 cells were induced to differentiate prior to DNA demethylation. Stable lines of C86AGM2 cells expressing both the hprtmand hprt+genes did not inactivate either gene following differentiation.
人肿瘤细胞系和新鲜儿科肿瘤外植体中可变的 5-甲基胞嘧啶水平。
DOI: --
发表时间: 1983
期刊: Cancer research
影响因子: 11.2
作者:
Flatau,E;Bogenmann,E;Jones,PA
通讯作者: Jones,PA
DOI: 10.1021/bi00326a010
发表时间: 1985-02
期刊: Biochemistry
影响因子: 2.9
作者:
U. Patel-Thombre;R. Borchardt
通讯作者: U. Patel-Thombre;R. Borchardt
DOI: 10.1016/s0021-9258(19)68144-5
发表时间: 1982-02
期刊: The Journal of biological chemistry
影响因子: --
作者:
F. Creusot;G. Acs;J. Christman
通讯作者: F. Creusot;G. Acs;J. Christman
小鼠和中国仓鼠的次黄嘌呤鸟嘌呤磷酸核糖基转移酶基因:cDNA重组体的构建和序列分析。
DOI: 10.1093/nar/10.21.6763
发表时间: 1982
影响因子: 14.9
作者:
Konecki,DS;Brennand,J;Fuscoe,JC;Caskey,CT;Chinault,AC
通讯作者: Chinault,AC
DOI: 10.1126/science.6164095
发表时间: 1981-01-01
期刊: SCIENCE
影响因子: 56.9
作者:
MOHANDAS, T;SPARKES, RS;SHAPIRO, LJ
通讯作者: SHAPIRO, LJ