Second cistron in CACNA1A gene encodes a transcription factor mediating cerebellar development and SCA6.
Second cistron in CACNA1A gene encodes a transcription factor mediating cerebellar development and SCA6.
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DOI:
10.1016/j.cell.2013.05.059
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发表时间:
2013-07-03
期刊:
影响因子:
64.5
通讯作者:
Gomez CM
中科院分区:
文献类型:
--
作者:
Du X;Wang J;Zhu H;Rinaldo L;Lamar KM;Palmenberg AC;Hansel C;Gomez CM
The CACNA1A gene, encoding the voltage-gated calcium channel subunit α1A, is involved in pre- and postsynaptic Ca2+ signaling, gene expression, and several genetic neurological disorders. We found that CACNA1A employs a novel strategy to directly coordinate a gene expression program, using a bicistronic mRNA bearing a cryptic internal ribosomal entry site (IRES). The first cistron encodes the well-characterized α1A subunit. The second expresses a newly-recognized transcription factor, α1ACT, that coordinates expression of a program of genes involved in neural and Purkinje cell development. α1ACT also contains the polyglutamine (polyQ) tract that, when expanded, causes spinocerebellar ataxia type 6 (SCA6). When expressed as an independent polypeptide, α1ACT, bearing an expanded polyQ tract, lacks transcription factor function and neurite outgrowth properties, causes cell death in culture, and leads to ataxia and cerebellar atrophy in transgenic mice. Suppression of CACNA1A IRES function in SCA6 may be a potential therapeutic strategy.
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影响因子:
5.3
作者:
Matsushita, K;Wakamori, M;Imoto, K
通讯作者:
Imoto, K
影响因子:
64.8
作者:
Cruts, Marc;Gijselinck, Ilse;Van Broeckhoven, Christine
通讯作者:
Van Broeckhoven, Christine
影响因子:
64.8
作者:
LASPADA, AR;WILSON, EM;FISCHBECK, KH
通讯作者:
FISCHBECK, KH
影响因子:
4.5
作者:
Marqueze-Pouey, Beatrice;Martin-Moutot, Nicole;Seagar, Michael
通讯作者:
Seagar, Michael
DOI:
10.1083/jcb.138.5.1089
发表时间:
1997-09-08
期刊:
The Journal of cell biology
影响因子:
--
作者:
Cimato TR;Ettinger MJ;Zhou X;Aletta JM
通讯作者:
Aletta JM