Re-programming of C. elegans male epidermal precursor fates by Wnt, Hox, and LIN-12/Notch activities.
Re-programming of C. elegans male epidermal precursor fates by Wnt, Hox, and LIN-12/Notch activities.
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DOI:
10.1016/j.ydbio.2010.05.008
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发表时间:
2010-09-01
影响因子:
2.7
通讯作者:
Sternberg, Paul W.
中科院分区:
文献类型:
--
作者:
Yu, Hui;Seah, Adeline;Sternberg, Paul W.
In C. elegans males, different subsets of ventral epidermal precursor (Pn.p) cells adopt distinct fates in a position-specific manner: three posterior cells, P(9–11).p, comprise the hook sensillum competence group (HCG) with three potential fates (1°, 2°, or 3°), while eight anterior cells, P(1–8).p, fuse with the hyp7 epidermal syncytium. Here we show that activation of the canonical BAR-1 β-catenin pathway of Wnt signaling alters the competence of P(3–8).p and specifies ectopic HCG-like fates. This fate transformation requires the Hox gene mab-5. In addition, misexpression of mab-5 in P(1–8).p is sufficient to establish HCG competence among these cells, as well as to generate ectopic HCG fates in combination with LIN-12 or EGF signaling. While increased Wnt signaling induces predominantly 1° HCG fates, increased LIN-12 or EGF signaling in combination with MAB-5 overexpression promotes 2° HCG fates in anterior Pn.p cells, suggesting distinctive functions of Wnt, LIN-12, and EGF signaling in specification of HCG fates. Lastly, wild-type mab-5 function is necessary for normal P(9–11).p fate specification, indicating that regulation of ectopic HCG fate formation revealed in anterior Pn.p cells reflect mechanisms of pattern formation during normal hook development.
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影响因子:
64.5
作者:
Inoue, T;Oz, HS;Sternberg, PW
通讯作者:
Sternberg, PW
影响因子:
64.8
作者:
Korswagen, HC;Herman, MA;Clevers, HC
通讯作者:
Clevers, HC
影响因子:
64.5
作者:
CLARK, SG;CHISHOLM, AD;HORVITZ, HR
通讯作者:
HORVITZ, HR
影响因子:
10.5
作者:
Gleason, JE;Korswagen, HC;Eisenmann, DM
通讯作者:
Eisenmann, DM
影响因子:
64.5
作者:
HERMAN, MA;VASSILIEVA, LL;HERMAN, RK
通讯作者:
HERMAN, RK