An SREBP-responsive microRNA operon contributes to a regulatory loop for intracellular lipid homeostasis.
An SREBP-responsive microRNA operon contributes to a regulatory loop for intracellular lipid homeostasis.
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DOI:
10.1016/j.cmet.2013.06.010
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发表时间:
2013-07-02
期刊:
影响因子:
29
通讯作者:
Osborne TF
中科院分区:
文献类型:
--
作者:
Jeon TI;Esquejo RM;Roqueta-Rivera M;Phelan PE;Moon YA;Govindarajan SS;Esau CC;Osborne TF
Sterol regulatory element binding proteins (SREBPs) have evolved as a focal point for linking lipid synthesis with other pathways that regulate cell growth and survival. Here, we have uncovered a polycistrionic micro-RNA locus that is activated directly by SREBP-2. Two of the encoded miRs, miR-182 and miR-96, negatively regulate expression of Fbxw7 and Insig-2 respectively, and both are known to negatively affect nuclear SREBP accumulation. Direct manipulation of this miR pathway alters nuclear SREBP levels and endogenous lipid synthesis. Thus, we have uncovered a new mechanism for regulation of intracellular lipid metabolism mediated by the concerted action of a pair of miRs that are expressed from the same SREBP-2 regulated miR locus and each targets a different protein of the multi-step pathway that regulates SREBP function. These studies reveal a miR “operon” analogous to the classic model for genetic control in bacterial regulatory systems.
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DOI:
10.1126/science.1189123
发表时间:
2010-06-18
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Najafi-Shoushtari SH;Kristo F;Li Y;Shioda T;Cohen DE;Gerszten RE;Näär AM
通讯作者:
Näär AM
影响因子:
4.8
作者:
Gerin, Isabelle;Clerbaux, Laure-Alix;Bommer, Guido T.
通讯作者:
Bommer, Guido T.
影响因子:
64.5
作者:
Krol, Jacek;Busskamp, Volker;Filipowicz, Witold
通讯作者:
Filipowicz, Witold
DOI:
10.1073/pnas.1005191107
发表时间:
2010-07-06
影响因子:
11.1
作者:
Marquart, Tyler J.;Allen, Ryan M.;Baldan, Angel
通讯作者:
Baldan, Angel
影响因子:
56.9
作者:
Nateri, AS;Riera-Sans, L;Behrens, A
通讯作者:
Behrens, A