Activation of the mouse proliferating cell nuclear antigen gene promoter by adenovirus type 12 E1A proteins.

Activation of the mouse proliferating cell nuclear antigen gene promoter by adenovirus type 12 E1A proteins.
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DOI:
10.1111/j.1349-7006.1992.tb00133.x
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发表时间:
1992-06
期刊:
Japanese journal of cancer research : Gann
影响因子:
--
通讯作者:
Matsukage A
Matsukage A
中科院分区:
其他
文献类型:
--
作者:
Yamaguchi M;Hayashi Y;Hirose F;Matsuoka S;Shiroki K;Matsukage A

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将携带小鼠增殖细胞核抗原(PCNA)基因5'侧翼区(转录起始位点的–1584至+47)的质粒与氯霉素乙酰转移酶(CAT)基因融合,然后与12型E1基因腺病毒表达质粒共转染至小鼠N18TG2细胞中。 E1A 基因产物的表达使 CAT 表达提高了 5 至 9 倍,但 E1B 基因产物的表达却没有。 RNase 保护分析表明,E1A 对 PCNA 基因启动子的激活是在转录步骤。 13S E1A和12S E1A均激活PCNA基因启动子,表明E1A的激活结构域位于13S和12S E1A产物的共同区域中。 El A 的主要靶区域被定位在 PCNA 基因的 68 个碱基对区域(‐21 至 +47)内,其中包括转录因子 PEA3 和 E2P 的共有序列,尽管包括 ATF(CREB)结合共有序列的上游区域(–83 至 – 21)在反式激活中具有额外的作用。
A plasmid carrying the 5′‐flanking region (– 1584 to + 47 with respect to the transcription initiation site) of the mouse proliferating cell nuclear antigen (PCNA) gene was fused with the chloramphenicol acetyltransferase (CAT) gene, and then cotransfected into mouse N18TG2 cells with expression plasmids for the adenovirus type 12 E1 genes. Expression of E1A gene products elevated the CAT expression by 5‐ to 9‐fold, but expression of the E1B gene product did not. RNase protection analysis revealed that the activation of the PCNA gene promoter by E1A was at the transcription step. Both the 13S E1A and the 12S E1A activated the PCNA gene promoter, indicating that the activation domain of El A resides in a common region(s) of 13S and 12S El A products. The major target region of El A was mapped within the 68 base‐pair region (‐21 to +47) of the PCNA gene, which includes consensus sequences for transcription factors PEA3 and E2P, although the upstream region (–83 to – 21) including ATF(CREB)‐binding consensus had an additional effect in the transactivation.
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期刊: BIOCHEMISTRY
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发表时间: 1991-11-01
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DOI: 10.1002/j.1460-2075.1990.tb07387.x
发表时间: 1990-07-01
期刊: EMBO JOURNAL
影响因子: 11.4
作者:
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通讯作者: NEVINS, JR