Human 7- to -globin gene switching in transgenic mice

Human 7- to -globin gene switching in transgenic mice
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转基因小鼠中人类 7-珠蛋白基因转换

DOI:
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发表时间:
2007
期刊:
影响因子:
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通讯作者:
T. Townes
T. Townes
中科院分区:
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文献类型:
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作者:
R. Behringer;T. M. Ryan;R. Palmiter;R. Brinster;T. Townes

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以往的研究表明,在转基因小鼠中,人7和~-珠蛋白基因的组织特异性和时间特异性表达是正确的,但表达量极低。当通常位于人13-珠蛋白基因座上游的红细胞特异性DNA酶I超敏(HS)位点分别与7”或13-珠蛋白基因融合时,表达增加到内源性小鼠珠蛋白水平,但时间特异性丧失。相反,当HS序列与含有7和13珠蛋白基因的片段结合时,恢复了正确的发育调节。我们认为,人类7”至13-珠蛋白基因开关在发展过程中的结果,从竞争的个别珠蛋白基因家族成员的相互作用与HS序列和影响这些竞争性相互作用的因素决定时间特异性。
Previous studies demonstrated correct tissueand temporal-specific expression of human 7and ~-globin genes in transgenic mice; however, expression was extremely low. When the erythroid-specific DNase I superhypersensitive (HS) sites that are normally located upstream of the human 13-globin locus were fused individually to 7" or 13-globin genes, expression increased to endogenous mouse globin levels but temporal specificity was lost. In contrast, when the HS sequences were combined with fragments containing both 7" and 13-globin genes, correct developmental regulation was restored. We suggest that human 7" to 13-globin gene switching during development results from competition of individual globin gene family members for interaction with the HS sequences and that factors influencing these competitive interactions determine temporal specificity.
单个红细胞特异性 DNase I 超敏感位点可激活转基因小鼠中高水平的人类 β-珠蛋白基因表达。
DOI: 10.1101/gad.3.3.314
发表时间: 1989
影响因子: 10.5
作者:
Ryan,TM;Behringer,RR;Martin,NC;Townes,TM;Palmiter,RD;Brinster,RL
通讯作者: Brinster,RL
转基因小鼠中功能性人血红蛋白的合成。
DOI: 10.1126/science.2772649
发表时间: 1989
期刊: Science (New York, N.Y.)
影响因子: --
作者:
Behringer,RR;Ryan,TM;Reilly,MP;Asakura,T;Palmiter,RD;Brinster,RL;Townes,TM
通讯作者: Townes,TM
DOI: 10.1073/pnas.82.19.6384
发表时间: 1985-01-01
影响因子: 11.1
作者:
TUAN, D;SOLOMON, W;LONDON, IM
通讯作者: LONDON, IM
DOI: 10.1073/pnas.82.13.4438
发表时间: 1985-01-01
影响因子: 11.1
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转基因小鼠中人珠蛋白基因的发育调控。
DOI: 10.1101/sqb.1985.050.01.046
发表时间: 1985
期刊: Cold Spring Harbor symposia on quantitative biology
影响因子: --
作者:
Costantini,F;Radice,G;Magram,J;Stamatoyannopoulos,G;Papayannopoulou,T;Chada,K
通讯作者: Chada,K