Local Gurken signaling and dynamic MAPK activation during Drosophila oogenesis
Local Gurken signaling and dynamic MAPK activation during Drosophila oogenesis
复制标题
果蝇卵子发生过程中的局部 Gurken 信号传导和动态 MAPK 激活
DOI:
10.1016/s0925-4773(98)00228-7
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发表时间:
1999
影响因子:
2.6
通讯作者:
S. Roth
中科院分区:
文献类型:
--
作者:
F. Peri;Christian Bökel;S. Roth
During Drosophila melanogaster oogenesis Gurken, a TGF-α like protein localized close to the oocyte nucleus, activates the MAPK cascade via the Drosophila EGF receptor (DER). Activation of this pathway induces different cell fates in the overlying follicular epithelium, specifying the two dorsolaterally positioned respiratory appendages and the dorsalmost cells separating them. Signal-associated internalization of Gurken protein into follicle cells demonstrates that the Gurken signal is spatially restricted and of constant intensity during mid-oogenesis. At the same time MAPK activation evolves in a spatially and temporally dynamic way and resolves into a complex pattern that presages the position of the appendages. Therefore, different dorsal follicle cell fates are not determined by a Gurken morphogen gradient. Instead they are specified by secondary signal amplification and refinement processes that integrate the Gurken signal with positive and negative feedback mechanisms generated by target genes of the DER pathway.
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DOI:
10.1242/dev.120.9.2457
发表时间:
1994
期刊:
Development (Cambridge, England)
影响因子:
--
作者:
Neuman-Silberberg,FS;Schupbach,T
通讯作者:
Schupbach,T
DOI:
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发表时间:
1994-06
期刊:
The Journal of biological chemistry
影响因子:
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作者:
Peter J. Dempsey;R. J. Coffey
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影响因子:
4.6
作者:
Deng, WM;Schneider, M;Ruohola-Baker, H
通讯作者:
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DOI:
10.1242/dev.124.19.3871
发表时间:
1997
期刊:
Development (Cambridge, England)
影响因子:
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作者:
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通讯作者:
Schüpbach,T