Characterisation of the role and regulation of Ultrabithorax in sculpting fine-scale leg morphology
Characterisation of the role and regulation of Ultrabithorax in sculpting fine-scale leg morphology
复制标题
Ultrabithorax 在雕刻精细腿部形态中的作用和调节的表征
DOI:
10.1101/2020.06.17.152918
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Buffry A
中科院分区:
文献类型:
--
作者:
Buffry A
Hox genes are expressed during embryogenesis and determine the regional identity of animal bodies along the antero-posterior axis. However, they also function post-embryonically to sculpt fine-scale morphology. To better understand how Hox genes are integrated into post-embryonic gene regulatory networks, we further analysed the role and regulation ofUltrabithorax(Ubx) during leg development inDrosophila melanogaster.Ubxregulates several aspects of bristle and trichome patterning on the femurs of the second (T2) and third (T3) leg pairs. We found that repression of trichomes in the proximal posterior region of the T2 femur by Ubx is likely mediated by activation of the expression ofmicroRNA-92aandmicroRNA-92bby this Hox protein. Furthermore, we identified a novel enhancer ofUbxthat recapitulates the temporal and regional activity of this gene in T2 and T3 legs. We then used transcription factor (TF) binding motif analysis in regions of accessible chromatin in T2 leg cells to predict and functionally test TFs that may regulate theUbxleg enhancer. We also tested the role of the Ubx co-factors Homothorax (Hth) and Extradenticle (Exd) in T2 and T3 femurs. We found several TFs that may act upstream or in concert with Ubx to modulate trichome patterning along the proximo-distal axis of developing femurs and that the repression of trichomes also requires Hth and Exd. Taken together our results provide insights into howUbxis integrated into a post-embryonic gene regulatory network to determine fine-scale leg morphology.
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影响因子:
5.5
作者:
Giraud G;Paul R;Duffraisse M;Khan S;Shashidhara LS;Merabet S
通讯作者:
Merabet S
影响因子:
14.9
作者:
Rivera J;Keränen SVE;Gallo SM;Halfon MS
通讯作者:
Halfon MS
DOI:
10.1002/j.1460-2075.1986.tb04497.x
发表时间:
1986
期刊:
The EMBO Journal
影响因子:
--
作者:
M. Peifer;W. Bender
通讯作者:
W. Bender
影响因子:
4.6
作者:
Kenneth D. Irvine;J. Botas;Sanjaya Jha;Richard S. Mann;D. Hogness
通讯作者:
D. Hogness
影响因子:
7
作者:
Siepel, A;Bejerano, G;Haussler, D
通讯作者:
Haussler, D