miR-196 regulates axial patterning and pectoral appendage initiation.
miR-196 regulates axial patterning and pectoral appendage initiation.
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DOI:
10.1016/j.ydbio.2011.07.014
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发表时间:
2011-09-15
影响因子:
2.7
通讯作者:
Postlethwait JH
中科院分区:
文献类型:
--
作者:
He X;Yan YL;Eberhart JK;Herpin A;Wagner TU;Schartl M;Postlethwait JH
Vertebrate Hox-clusters contain protein-coding genes that regulate body axis development and microRNA (miRNA) genes whose functions are not yet well understood. We over-expressed the Hox-cluster microRNA miR-196 in zebrafish embryos and found four specific, viable phenotypes: failure of pectoral fin bud initiation, deletion of the 6th pharyngeal arch, homeotic aberration and loss of rostral vertebrae, and reduced number of ribs and somites. Reciprocally, miR-196 knockdown evoked an extra pharyngeal arch, extra ribs, and extra somites, confirming endogenous roles of miR-196. miR-196 injection altered expression of hox genes and the signaling of retinoic acid through the retinoic acid receptor gene rarab. Knocking down rarab mimicked the pectoral fin phenotype of miR-196 over-expression, and reporter constructs tested in tissue culture and in embryos showed that the rarab 3’UTR is a miR-196 target for pectoral fin bud initiation. These results show that a Hox-cluster microRNA modulates development of axial patterning similar to nearby protein-coding Hox genes, and acts on appendicular patterning at least in part by modulating retinoic acid signaling.
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影响因子:
7
作者:
Amores, A;Suzuki, T;Postlethwait, JH
通讯作者:
Postlethwait, JH
影响因子:
5.3
作者:
Chen C;Zhang Y;Zhang L;Weakley SM;Yao Q
通讯作者:
Yao Q
影响因子:
2.9
作者:
Bruce, AEE;Oates, AC;Ho, RK
通讯作者:
Ho, RK
影响因子:
3.7
作者:
Bayha E;Jørgensen MC;Serup P;Grapin-Botton A
通讯作者:
Grapin-Botton A
影响因子:
56.9
作者:
Finnerty, JR;Pang, K;Martindale, MQ
通讯作者:
Martindale, MQ