MicroRNA-33 and the SREBP host genes cooperate to control cholesterol homeostasis.
MicroRNA-33 and the SREBP host genes cooperate to control cholesterol homeostasis.
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DOI:
10.1126/science.1189123
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发表时间:
2010-06-18
期刊:
影响因子:
--
通讯作者:
Näär AM
中科院分区:
文献类型:
--
作者:
Najafi-Shoushtari SH;Kristo F;Li Y;Shioda T;Cohen DE;Gerszten RE;Näär AM
Proper coordination of cholesterol biosynthesis and trafficking is essential to human health. The sterol regulatory element binding proteins (SREBPs) are key transcription regulators of genes involved in cholesterol biosynthesis/uptake. We show here that microRNAs (miR-33a/b) embedded within introns of the SREBP genes target the ATP-binding cassette transporter A1 (ABCA1), an important regulator of high-density lipoprotein (HDL) synthesis and reverse cholesterol transport, for post-transcriptional repression. Antisense inhibition of miR-33 in cell lines causes upregulation of ABCA1 expression and increased cholesterol efflux, and injection of mice on a western-type diet with locked nucleic acid (LNA)-antisense oligonucleotides results in elevated plasma HDL. Collectively, our findings indicate that miR-33 acts in concert with the SREBP host genes to control cholesterol homeostasis, and suggest that miR-33 may represent a therapeutic target for ameliorating cardiometabolic diseases.
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