Establishment of embryonic stem cell lines from preimplantation mouse embryos homozygous for lethal mutations in the t-complex.

Establishment of embryonic stem cell lines from preimplantation mouse embryos homozygous for lethal mutations in the t-complex.
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从 T 复合物致死突变纯合的植入前小鼠胚胎中建立胚胎干细胞系。

DOI:
10.1016/0012-1606(87)90134-5
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发表时间:
1987
影响因子:
2.7
通讯作者:
Joyner,AL
Joyner,AL
中科院分区:
生物学3区
文献类型:
--
作者:
Martin,GR;Silver,LM;Fox,HS;Joyner,AL

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我们已经确定了胚胎干细胞(ESC)系可以从小鼠t复合物纯合突变的囊胚分离的内细胞团(ICMs)中建立的频率。大约三分之一的预期数量,即329个,由+ t w18小鼠的内部交配获得的胚胎建立的ESC系为t w18单倍型纯合子。这些t w18 t w18 ESC系在体外和体内形成多种细胞类型,包括软骨和肌肉等中胚层衍生物。基于这些和其他研究的数据,我们认为tw18致死等位基因所代表的基因的正常功能是胚胎中中胚层前体增殖/存活所必需的,而不是中胚层谱系的规范,并且该突变的致死效应仅在早期植入后胚胎的高度结构化环境中表达。在致死性tw5单倍型的研究中,我们发现获得的22个ESC系是突变纯合子。这些数据的分析,结合我们早期的研究结果(Magnuson, T., Epstein, CJ, Silver, LM, and Martin, GR (1982), Nature (London) 298, 750-753),表明tw5单倍型中发现的基因的纯合性不会降低细胞活力。相比之下,从+ t 0小鼠交配获得的胚胎中分离的16个ESC系是突变纯合子。对ICM衍生的原代干细胞菌落的基因型分析表明,纯合子ICM细胞不能在体外进行足够的增殖以产生ESC系。
We have determined the frequency at which embryonic stem cell (ESC) lines can be established from inner cell masses (ICMs) isolated from blastocysts homozygous for lethal mutations in the mouse t-complex. Approximately one-third of the expected number, 3 29, of the ESC lines established from embryos obtained by inter-se mating of+ t w18 mice are homozygous for the t w18 haplotype. These t w18 t w18 ESC lines form a variety of cell types in vitro and in vivo, including mesodermal derivatives such as cartilage and muscle. On the basis of these and data from other studies, we suggest that the normal function of the gene represented by the t w18 lethal allele is required for multiplication/survival of mesodermal precursors in the embryo rather than the specification of the mesodermal lineage, and that the lethal effects of this mutation are expressed in only the highly structured environment of the early postimplantation embryo. In studies of the lethal t w5 haplotype, we found that 2 2 ESC lines obtained are mutant homozygotes. Analysis of these data, in conjunction with the results of our earlier study (Magnuson, T., Epstein, CJ, Silver, LM, and Martin, GR (1982), Nature (London) 298, 750–753), suggests that homozygosity for the genes found in the t w5 haplotype does not reduce cell viability. By contrast, 0 16 ESC lines isolated from embryos obtained from matings of+ t 0 mice are mutant homozygotes. Analysis of the genotypes of ICM-derived primary stem cell colonies suggests that t 0 homozygous ICM cells are unable to undergo sufficient proliferation in vitro to give rise to ESC lines.
小鼠 T 复合体中两个区域控制传动比的证据。
DOI: 10.1017/s0016672300020632
发表时间: 1981
期刊: Genetical research
影响因子: --
作者:
J. Styrna;J. Klein
通讯作者: J. Klein
小鼠 T/t 位点突变体衍生的实验性畸胎瘤的发育相互作用研究
DOI: 10.1016/b978-0-12-398250-6.50036-5
发表时间: 1977
影响因子: --
作者:
D. Bennett;K. Artzt;T. Magnuson;M. Spiegelman
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DOI: --
发表时间: 1986
期刊: Cell
影响因子: 64.5
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一种由基因引起的小鼠胚胎外胚层肿瘤。
DOI: 10.1093/jnci/48.1.141
发表时间: 1972
期刊: Journal of the National Cancer Institute
影响因子: --
作者:
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通讯作者: D. Bennett
分子探针定义小鼠 t 复合体的不同区域
DOI: 10.1016/0092-8674(85)90309-5
发表时间: 1985
期刊: Cell
影响因子: 64.5
作者:
H. Fox;G. Martin;M. Lyon;B. Herrmann;A. Frischauf;H. Lehrach;L. Silver
通讯作者: L. Silver