Analysis of mutants with altered shh activity and posterior digit loss supports a biphasic model for shh function as a morphogen and mitogen.
Analysis of mutants with altered shh activity and posterior digit loss supports a biphasic model for shh function as a morphogen and mitogen.
复制标题
对 shh 活性改变和后指缺失的突变体的分析支持 shh 作为形态发生素和有丝分裂原发挥作用的双相模型。
DOI:
10.1002/dvdy.22637
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发表时间:
2011
期刊:
影响因子:
--
通讯作者:
Mackem,Susan
中科院分区:
文献类型:
--
作者:
Zhu,Jianjian;Mackem,Susan
Sonic hedgehog (Shh) controls the number and type of digits formed. Using a conditional genetic approach for timed removal ofShh, we previously proposed a biphasic model of Shh function: a transient patterning phase, during which digit progenitors are specified, and an extended proliferative phase, during which expansion of progenitor pools enables digit formation. Other models favor a close integration of digit patterning and expansion, with sequential promotion to more posterior identity over time, apparently supported by some mutants with selective posterior digit loss. To further test these models, we analyzed the dynamics of Shh activity in several oligodactylous mutants with different types of digit loss. The profile of Shh activity and phenotypic outcome in these mutants supports a biphasic over an integrated temporal model.Eomesoderminexpression, as an independent marker of posterior digit identity, confirmed that proper digit 4 specification requires only the transient phase of Shh activity. Developmental Dynamics 240:1303–1310, 2011. © 2011 Wiley‐Liss, Inc.
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DOI:
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发表时间:
1981
影响因子:
11.1
作者:
A. Notides;N. Lerner;D. E. Hamilton
通讯作者:
D. E. Hamilton
影响因子:
4.1
作者:
J. Renoir;J. Mester;T. Buchou;M. Catelli;P. Tuohimaa;N. Binart;I. Joab;C. Radanyi;E. Baulieu
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影响因子:
2.9
作者:
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通讯作者:
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DOI:
10.1111/j.1432-1033.1985.tb08703.x
发表时间:
1985
期刊:
European journal of biochemistry
影响因子:
--
作者:
P. Baskevitch;H. Rochefort
通讯作者:
H. Rochefort
DOI:
--
发表时间:
1978
期刊:
影响因子:
--
作者:
Sherman Mr;Pickering La;Rollwagen Fm;Miller Lk
通讯作者:
Miller Lk