Overexpression of a Zebrafish ARNT2-like Factor Represses CYP1A Transcription in ZLE Cells
Overexpression of a Zebrafish ARNT2-like Factor Represses CYP1A Transcription in ZLE Cells
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斑马鱼 ARNT2 样因子的过度表达抑制 ZLE 细胞中 CYP1A 转录
DOI:
10.1007/s101260000001
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发表时间:
2000
影响因子:
3
通讯作者:
Chin
中科院分区:
文献类型:
--
作者:
Wen;Jun;H. Hsu;Z. Kong;Chin
Abstract: Aryl hydrocarbon receptor nuclear translocator (ARNT) factors belong to a novel basic-helix-loop-helix–PAS (bHLH-PAS) transcription factor family that controls a variety of physiological and developmental processes. In a previous study, we obtained a partial complementary DNA fragment of an ARNT2-like factor from zebrafish embryo, liver, and other tissues by reverse transcription–polymerase chain reaction. In an effort to characterize the function of this factor, we screened an embryonic complementary DNA library and obtained a complete cDNA of this ARNT2-like factor, zARNT2A. The deduced protein sequence of zARNT2A encompasses the basic-helix-loop-helix and PAS-A/B motifs and shares highest sequence similarity with the amino-terminal half of mouse ARNT2 factor. However, it lacks a carboxy-terminal transactivation motif following the PAS-A/B motifs. Transient expression of zARNT2A in cultured cells resulted in repression of TCDD-dependent CYP1A transcription. Whole-mount in situ hybridization revealed that zARNT2A is expressed in brain and pronephros at prime-5 stages. In adult fish, zARNT2A messenger RNA is transcribed in a wide range of tissues, which indicates that zARNT2A and its corresponding signal transduction mechanisms have important roles in fish development and other physiological aspects.
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影响因子:
3.9
作者:
Powell,WH;Karchner,SI;Bright,R;Hahn,ME
通讯作者:
Hahn,ME
影响因子:
4
作者:
Mann, RS;Affolter, M
通讯作者:
Affolter, M
DOI:
10.1073/pnas.95.6.2844
发表时间:
1998-03
影响因子:
11.1
作者:
J. Powell-Coffman;C. Bradfield;William B. Wood
通讯作者:
J. Powell-Coffman;C. Bradfield;William B. Wood
DOI:
10.1016/s0021-9258(18)31725-3
发表时间:
1994-12
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Sanjay Jain;K. M. Dolwick;J. Schmidt;Christopher A. Bradfield
通讯作者:
Sanjay Jain;K. M. Dolwick;J. Schmidt;Christopher A. Bradfield
DOI:
10.1073/pnas.94.25.13743
发表时间:
1997-12-09
影响因子:
11.1
作者:
Hahn, ME;Karchner, SI;Perera, SA
通讯作者:
Perera, SA