Control of foot differentiation in Hydra: Phylogenetic footprinting indicates interaction of head, bud and foot patterning systems
Control of foot differentiation in Hydra: Phylogenetic footprinting indicates interaction of head, bud and foot patterning systems
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水螅足分化的控制:系统发育足迹表明头、芽和足图案系统的相互作用
DOI:
10.1016/j.mod.2005.04.010
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发表时间:
2005
影响因子:
2.6
通讯作者:
T. Bosch
中科院分区:
文献类型:
--
作者:
S. Siebert;S. Thomsen;M. M. Reimer;T. Bosch
Homeodomain transcription factor CnNK-2 seems to play a major role in foot formation in Hydra. Recently, we reported in vitro evidence indicating that CnNK-2 has autoregulatory features and regulates expression of the morphogenetic peptide pedibin. We proposed that CnNK-2 and pedibin synergistically orchestrate foot differentiation processes [Thomsen, S., Till, A., Wittlieb, J., Beetz, C., Khalturin, K., Bosch, T. C., 2004. Control of foot differentiation in Hydra: in vitro evidence that the NK-2 homeobox factor CnNK-2 autoregulates its own expression and uses pedibin as target gene. Mech. Dev. 121, 195–204]. Here, we further analyzed the regulatory network controlling foot formation in Hydra. By phylogenetic footprinting we compared the CnNK-2 5′-flanking sequence from two closely related species, Hydra vulgaris and Hydra oligactis. Unexpectedly, we detected a highly conserved binding site for HNF-3β, a vertebrate Forkhead transcription factor, in the CnNK-2 5′-flanking region. The Hydra HNF-3β homolog budhead is predominantly expressed in the apical region of the body column and early during budding. Budhead is absent from tissue expressing CnNK-2 and thought to be involved in determining tissue for head differentiation [Martinez, D.E., Dirksen, M.L., Bode, P. M., Jamrich, M., Steele, R.E., Bode, H.R., 1997. Budhead, a fork head/HNF-3β homolog, is expressed during axis formation and head specification in hydra. Dev. Biol. 192, 523–536]. By electrophoretic mobility shift assays we demonstrate an in vitro interaction between recombinant budhead protein and the interspecific conserved HNF-3β binding motif in the CnNK-2 5′-flanking region. Our results strengthen the view of CnNK-2 as an important regulator during foot patterning processes. Furtheron, they point to budhead as a candidate for a transcriptional regulator of CnNK-2 and to an interaction of foot and head patterning processes in Hydra on the molecular level.
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影响因子:
4.6
作者:
Ann Grens;E. Mason;J. Marsh;H. Bode
通讯作者:
Ann Grens;E. Mason;J. Marsh;H. Bode
DOI:
10.1242/dev.127.1.129
发表时间:
2000
期刊:
Development (Cambridge, England)
影响因子:
--
作者:
Yan,L;Fei,K;Zhang,J;Dexter,S;SarrasJr,MP
通讯作者:
SarrasJr,MP
DOI:
10.1242/dev.126.3.517
发表时间:
1999
期刊:
Development (Cambridge, England)
影响因子:
--
作者:
Grens,A;Shimizu,H;Hoffmeister,SA;Bode,HR;Fujisawa,T
通讯作者:
Fujisawa,T
DOI:
10.1242/dev.126.23.5245
发表时间:
1999
期刊:
Development (Cambridge, England)
影响因子:
--
作者:
Broun,M;Sokol,S;Bode,HR
通讯作者:
Bode,HR
影响因子:
--
作者:
Sethi, Richa;Ananta, Jeyarama S.;Karmonik, Christof;Zhong, Meng;Fung, Steve H.;Liu, Xuewu;Li, King;Ferrari, Mauro;Wilson, Lon J.;Decuzzi, Paolo
通讯作者:
Decuzzi, Paolo