A single cell level measurement of StAR expression and activity in adrenal cells.
A single cell level measurement of StAR expression and activity in adrenal cells.
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DOI:
10.1016/j.mce.2016.08.015
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发表时间:
2017-02-05
影响因子:
4.1
通讯作者:
Jefcoate C
中科院分区:
文献类型:
--
作者:
Lee J;Yamazaki T;Dong H;Jefcoate C
The Steroidogenic acute regulatory protein (StAR) directs mitochondrial cholesterol uptake through a C-terminal cholesterol binding domain (CBD) and a 62 amino acid N-terminal regulatory domain (NTD) that contains an import sequence and conserved sites for inner membrane metalloproteases. Deletion of the NTD prevents mitochondrial import while maintaining steroidogenesis but with compromised cholesterol homeostasis. The rapid StAR-mediated cholesterol transfer in adrenal cells depends on concerted mRNA translation, p37 StAR phosphorylation and controlled NTD cleavage. The NTD controls this process with two cAMP-inducible modulators of, respectively, transcription and translation SIK1 and TIS11b/Znf36l1. High-resolution fluorescence in situ hybridization (HR-FISH) of StAR RNA resolves slow RNA splicing at the gene loci in cAMP-induced Y-1 cells and transfer of individual 3.5 kb mRNA molecules to mitochondria. StAR transcription depends on the CREB coactivator CRTC2 and PKA inhibition of the highly inducible suppressor kinase SIK1 and a basal counterpart SIK2. PKA-inducible TIS11b/Znf36l1 binds specifically to highly conserved elements in exon 7 thereby suppressing formation of mRNA and subsequent translation. Co-expression of SIK1, Znf36l1 with 3.5 kb StAR mRNA may limit responses to pulsatile signaling by ACTH while regulating the transition to more prolonged stress
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影响因子:
14.9
作者:
Chang WL;Tarn WY
通讯作者:
Tarn WY
影响因子:
3.7
作者:
Chen Y;Patel V;Bang S;Cohen N;Millar J;Kim SF
通讯作者:
Kim SF
影响因子:
--
作者:
Grozdanov, Petar N.;Stocco, Douglas M.
通讯作者:
Stocco, Douglas M.
DOI:
10.1038/nrm3072
发表时间:
2011-03
期刊:
Nature reviews. Molecular cell biology
影响因子:
--
作者:
通讯作者:
--
DOI:
10.1073/pnas.94.21.11540
发表时间:
1997-10-14
影响因子:
11.1
作者:
Caron, KM;Soo, SC;Parker, KL
通讯作者:
Parker, KL