» Articles » PMID: 9122207

Hedgehog Signaling Regulates Transcription Through Cubitus Interruptus, a Sequence-specific DNA Binding Protein

Overview
Specialty Science
Date 1997 Mar 18
PMID 9122207
Citations 34
Authors
Affiliations
Soon will be listed here.
Abstract

Hedgehog (Hh) is a member of a family of secreted proteins that direct patterning at multiple stages in both Drosophila and vertebrate development. During Drosophila embryogenesis, Hh protein is secreted by the cells of the posterior compartment of each segment. hh activates transcription of wingless (wg), gooseberry (gsb), and patched (ptc) in the cells immediately adjacent to Hh-secreting cells. Hh signaling is thought to involve the segment polarity gene cubitus interruptus (ci). ci encodes a zinc finger protein of the Gli family of sequence-specific DNA binding proteins. ci mRNA is expressed in all non-Hh expressing cells. Here we demonstrate ci activity is both necessary and sufficient to drive expression of Hh-responsive genes in the Drosophila embryos. We show that Ci is a sequence-specific DNA binding protein that drives transcription from the wg promoter in transiently transfected cells. We demonstrate that Ci binding sites in the wg promoter are necessary for this transcriptional activation. These data taken together provide strong evidence that Ci is a transcriptional effector of Hh signaling.

Citing Articles

Tai/NCOA2 suppresses the Hedgehog pathway by directly targeting the transcription factor Ci/GLI.

Yu X, Wang X, Ma K, Gao D, Deng Y, Zhou D Proc Natl Acad Sci U S A. 2024; 121(47):e2409380121.

PMID: 39531503 PMC: 11588115. DOI: 10.1073/pnas.2409380121.


Developmental origin of tendon diversity in .

Moucaud B, Prince E, Jagla K, Soler C Front Physiol. 2023; 14:1176148.

PMID: 37143929 PMC: 10151533. DOI: 10.3389/fphys.2023.1176148.


Patterning of the retina by the morphogenetic furrow.

Warren J, Kumar J Front Cell Dev Biol. 2023; 11:1151348.

PMID: 37091979 PMC: 10117938. DOI: 10.3389/fcell.2023.1151348.


The Hh pathway promotes cell apoptosis through Ci-Rdx-Diap1 axis.

Liu B, Ding Y, Sun B, Liu Q, Zhou Z, Zhan M Cell Death Discov. 2021; 7(1):263.

PMID: 34561426 PMC: 8463586. DOI: 10.1038/s41420-021-00653-3.


The Hippo pathway coactivator Yorkie can reprogram cell fates and create compartment-boundary-like interactions at clone margins.

Bairzin J, Emmons-Bell M, Hariharan I Sci Adv. 2020; 6(50).

PMID: 33298454 PMC: 7725458. DOI: 10.1126/sciadv.abe8159.


References
1.
Smith D, Johnson K . Single-step purification of polypeptides expressed in Escherichia coli as fusions with glutathione S-transferase. Gene. 1988; 67(1):31-40. DOI: 10.1016/0378-1119(88)90005-4. View

2.
Capdevila J, Guerrero I . Targeted expression of the signaling molecule decapentaplegic induces pattern duplications and growth alterations in Drosophila wings. EMBO J. 1994; 13(19):4459-68. PMC: 395378. DOI: 10.1002/j.1460-2075.1994.tb06768.x. View

3.
HOOPER J, Scott M . The Drosophila patched gene encodes a putative membrane protein required for segmental patterning. Cell. 1989; 59(4):751-65. DOI: 10.1016/0092-8674(89)90021-4. View

4.
Alexandre C, Jacinto A, Ingham P . Transcriptional activation of hedgehog target genes in Drosophila is mediated directly by the cubitus interruptus protein, a member of the GLI family of zinc finger DNA-binding proteins. Genes Dev. 1996; 10(16):2003-13. DOI: 10.1101/gad.10.16.2003. View

5.
Kinzler K, Vogelstein B . The GLI gene encodes a nuclear protein which binds specific sequences in the human genome. Mol Cell Biol. 1990; 10(2):634-42. PMC: 360861. DOI: 10.1128/mcb.10.2.634-642.1990. View