FGF-regulated Etv genes are essential for repressing Shh expression in mouse limb buds.
FGF-regulated Etv genes are essential for repressing Shh expression in mouse limb buds.
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DOI:
10.1016/j.devcel.2009.02.008
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发表时间:
2009-04
影响因子:
11.8
通讯作者:
Sun, Xin
中科院分区:
文献类型:
--
作者:
Zhang, Zhen;Verheyden, Jamie M.;Hassell, John A.;Sun, Xin
Anterior-posterior (A-P) patterning of the vertebrate limb is controlled by sonic hedgehog (SHH) signaling, and the precise restriction of Shh expression to the posterior limb bud is essential for its polarizing effect. Fibroblast growth factor (FGF) signaling, a key control of proximal-distal (P-D) limb outgrowth, is known to promote Shh expression in the posterior limb bud. Here we show that conditional knockout of FGF-activated transcription factor genes Etv4 and Etv5 in mouse led to ectopic Shh expression in the anterior limb bud, and a preaxial polydactyly (PPD) skeletal phenotype. These unexpected results suggest that ETV4 and ETV5 act downstream of FGF signaling to inhibit Shh expression in the anterior limb bud. This finding elucidates a novel aspect of the mechanism coordinating limb development along the A-P and P-D axes.
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影响因子:
2.7
作者:
Chiang, C;Litingtung, Y;Fallon, JF
通讯作者:
Fallon, JF
影响因子:
5.3
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Laing, MA;Coonrod, S;Hassell, JA
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64.5
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