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  1. Article ; Online: Ciliogenesis and Hedgehog signalling are suppressed downstream of KRAS during acinar-ductal metaplasia in mouse.

    Bangs, Fiona K / Miller, Paul / O'Neill, Eric

    Disease models & mechanisms

    2020  Volume 13, Issue 7

    Abstract: Pancreatic ductal adenocarcinoma (PDAC) is the third leading cause of cancer-related deaths worldwide, but has a 5-year survival rate of only 7% primarily due to late diagnosis and ineffective therapies. To treat or even prevent PDAC, it is vital that we ...

    Abstract Pancreatic ductal adenocarcinoma (PDAC) is the third leading cause of cancer-related deaths worldwide, but has a 5-year survival rate of only 7% primarily due to late diagnosis and ineffective therapies. To treat or even prevent PDAC, it is vital that we understand the initiating events that lead to tumour onset. PDAC develops from preneoplastic lesions, most commonly pancreatic intraepithelial neoplasias (PanINs), driven by constitutive activation of KRAS. In patients, PanINs are associated with regions of acinar-to-ductal metaplasia (ADM) where, in response to inflammation, acini dedifferentiate to a pancreatic progenitor-like fate. In healthy tissue this process is reversible leading to regeneration of the pancreas; however, in the presence of oncogenic KRAS, regeneration is blocked and ADM can give rise to PanIN lesions. Here, we used a 3D mouse acinar culture that recapitulates ADM
    MeSH term(s) Adenocarcinoma in Situ/genetics ; Adenocarcinoma in Situ/metabolism ; Adenocarcinoma in Situ/pathology ; Animals ; Aurora Kinase A/genetics ; Aurora Kinase A/metabolism ; Carcinoma, Pancreatic Ductal/genetics ; Carcinoma, Pancreatic Ductal/metabolism ; Carcinoma, Pancreatic Ductal/pathology ; Cell Culture Techniques ; Cells, Cultured ; Cilia/genetics ; Cilia/metabolism ; Cilia/pathology ; Female ; Gene Expression Regulation, Neoplastic ; Genes, ras ; Hedgehog Proteins/metabolism ; Histone Deacetylase 2/genetics ; Histone Deacetylase 2/metabolism ; Male ; Metaplasia ; Mice, Inbred C57BL ; Mice, Transgenic ; Mutation ; Pancreatic Cyst/genetics ; Pancreatic Cyst/metabolism ; Pancreatic Cyst/pathology ; Pancreatic Neoplasms/genetics ; Pancreatic Neoplasms/metabolism ; Pancreatic Neoplasms/pathology ; Signal Transduction
    Chemical Substances Hedgehog Proteins ; Aurka protein, mouse (EC 2.7.11.1) ; Aurora Kinase A (EC 2.7.11.1) ; Hdac2 protein, mouse (EC 3.5.1.98) ; Histone Deacetylase 2 (EC 3.5.1.98)
    Language English
    Publishing date 2020-07-30
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2451104-3
    ISSN 1754-8411 ; 1754-8403
    ISSN (online) 1754-8411
    ISSN 1754-8403
    DOI 10.1242/dmm.044289
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Primary Cilia and Mammalian Hedgehog Signaling.

    Bangs, Fiona / Anderson, Kathryn V

    Cold Spring Harbor perspectives in biology

    2017  Volume 9, Issue 5

    Abstract: It has been a decade since it was discovered that primary cilia have an essential role in Hedgehog (Hh) signaling in mammals. This discovery came from screens in the mouse that identified a set of genes that are required for both normal Hh signaling and ... ...

    Abstract It has been a decade since it was discovered that primary cilia have an essential role in Hedgehog (Hh) signaling in mammals. This discovery came from screens in the mouse that identified a set of genes that are required for both normal Hh signaling and for the formation of primary cilia. Since then, dozens of mouse mutations have been identified that disrupt cilia in a variety of ways and have complex effects on Hedgehog signaling. Here, we summarize the genetic and developmental studies used to deduce how Hedgehog signal transduction is linked to cilia and the complex effects that perturbation of cilia structure can have on Hh signaling. We conclude by describing the current status of our understanding of the cell-type-specific regulation of ciliogenesis and how that determines the ability of cells to respond to Hedgehog ligands.
    MeSH term(s) Animals ; Cilia/physiology ; Hedgehog Proteins/metabolism ; Mammals/physiology ; Signal Transduction
    Chemical Substances Hedgehog Proteins
    Language English
    Publishing date 2017-05-01
    Publishing country United States
    Document type Journal Article ; Review
    ISSN 1943-0264
    ISSN (online) 1943-0264
    DOI 10.1101/cshperspect.a028175
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Ciliogenesis and Hedgehog signalling are suppressed downstream of KRAS during acinar-ductal metaplasia in mouse

    Fiona K. Bangs / Paul Miller / Eric O'Neill

    Disease Models & Mechanisms, Vol 13, Iss

    2020  Volume 7

    Abstract: Pancreatic ductal adenocarcinoma (PDAC) is the third leading cause of cancer-related deaths worldwide, but has a 5-year survival rate of only 7% primarily due to late diagnosis and ineffective therapies. To treat or even prevent PDAC, it is vital that we ...

    Abstract Pancreatic ductal adenocarcinoma (PDAC) is the third leading cause of cancer-related deaths worldwide, but has a 5-year survival rate of only 7% primarily due to late diagnosis and ineffective therapies. To treat or even prevent PDAC, it is vital that we understand the initiating events that lead to tumour onset. PDAC develops from preneoplastic lesions, most commonly pancreatic intraepithelial neoplasias (PanINs), driven by constitutive activation of KRAS. In patients, PanINs are associated with regions of acinar-to-ductal metaplasia (ADM) where, in response to inflammation, acini dedifferentiate to a pancreatic progenitor-like fate. In healthy tissue this process is reversible leading to regeneration of the pancreas; however, in the presence of oncogenic KRAS, regeneration is blocked and ADM can give rise to PanIN lesions. Here, we used a 3D mouse acinar culture that recapitulates ADM in vitro to explore how KRAS prevents regeneration. Regeneration is regulated by Hedgehog (Hh) signalling, which is transduced via the primary cilium. In wild-type acini, cilia assemble upon ADM and Hh target gene expression is upregulated; however, ciliogenesis and Hh signalling are suppressed during ADM in cells expressing oncogenic KRAS. We show that ciliogenesis fails due to ectopic activation of the cilium disassembly pathway, which is mediated by AurkA, a direct transcriptional target of KRAS. Inhibition of AurkA is able to rescue primary cilia and restore Hh signalling. We suggest that this could be used as a mechanism to prevent the formation of early lesions and thereby prevent progression to PDAC.
    Keywords acinar-ductal metaplasia ; hedgehog signalling ; kras ; pancreatic ductal adenocarcinoma ; primary cilia ; Medicine ; R ; Pathology ; RB1-214
    Subject code 570
    Language English
    Publishing date 2020-07-01T00:00:00Z
    Publisher The Company of Biologists
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: The Meckel syndrome- associated protein MKS1 functionally interacts with components of the BBSome and IFT complexes to mediate ciliary trafficking and hedgehog signaling.

    Goetz, Sarah C / Bangs, Fiona / Barrington, Chloe L / Katsanis, Nicholas / Anderson, Kathryn V

    PloS one

    2017  Volume 12, Issue 3, Page(s) e0173399

    Abstract: The importance of primary cilia in human health is underscored by the link between ciliary dysfunction and a group of primarily recessive genetic disorders with overlapping clinical features, now known as ciliopathies. Many of the proteins encoded by ... ...

    Abstract The importance of primary cilia in human health is underscored by the link between ciliary dysfunction and a group of primarily recessive genetic disorders with overlapping clinical features, now known as ciliopathies. Many of the proteins encoded by ciliopathy-associated genes are components of a handful of multi-protein complexes important for the transport of cargo to the basal body and/or into the cilium. A key question is whether different complexes cooperate in cilia formation, and whether they participate in cilium assembly in conjunction with intraflagellar transport (IFT) proteins. To examine how ciliopathy protein complexes might function together, we have analyzed double mutants of an allele of the Meckel syndrome (MKS) complex protein MKS1 and the BBSome protein BBS4. We find that Mks1; Bbs4 double mutant mouse embryos exhibit exacerbated defects in Hedgehog (Hh) dependent patterning compared to either single mutant, and die by E14.5. Cells from double mutant embryos exhibit a defect in the trafficking of ARL13B, a ciliary membrane protein, resulting in disrupted ciliary structure and signaling. We also examined the relationship between the MKS complex and IFT proteins by analyzing double mutant between Mks1 and a hypomorphic allele of the IFTB component Ift172. Despite each single mutant surviving until around birth, Mks1; Ift172avc1 double mutants die at mid-gestation, and exhibit a dramatic failure of cilia formation. We also find that Mks1 interacts genetically with an allele of Dync2h1, the IFT retrograde motor. Thus, we have demonstrated that the MKS transition zone complex cooperates with the BBSome to mediate trafficking of specific trans-membrane receptors to the cilium. Moreover, the genetic interaction of Mks1 with components of IFT machinery suggests that the transition zone complex facilitates IFT to promote cilium assembly and structure.
    MeSH term(s) Animals ; Biological Transport ; Cells, Cultured ; Ciliary Motility Disorders/metabolism ; Encephalocele/metabolism ; Flagella/metabolism ; Hedgehog Proteins/metabolism ; Mice ; Microscopy, Electron, Scanning ; Microscopy, Fluorescence ; Microtubule-Associated Proteins/metabolism ; Polycystic Kidney Diseases/metabolism ; Protein Binding ; Proteins/metabolism ; Proteins/physiology ; Retinitis Pigmentosa
    Chemical Substances BBS4 protein, mouse ; Hedgehog Proteins ; MKS1 protein, mouse ; Microtubule-Associated Proteins ; Proteins
    Language English
    Publishing date 2017-03-14
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0173399
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Lineage specificity of primary cilia in the mouse embryo.

    Bangs, Fiona K / Schrode, Nadine / Hadjantonakis, Anna-Katerina / Anderson, Kathryn V

    Nature cell biology

    2015  Volume 17, Issue 2, Page(s) 113–122

    Abstract: Primary cilia are required for vertebrate cells to respond to specific intercellular signals. Here we define when and where primary cilia appear in the mouse embryo using a transgenic line that expresses ARL13B-mCherry in cilia and Centrin 2-GFP in ... ...

    Abstract Primary cilia are required for vertebrate cells to respond to specific intercellular signals. Here we define when and where primary cilia appear in the mouse embryo using a transgenic line that expresses ARL13B-mCherry in cilia and Centrin 2-GFP in centrosomes. Primary cilia first appear on cells of the epiblast at E6.0 and are subsequently present on all derivatives of the epiblast. In contrast, extraembryonic cells of the visceral endoderm and trophectoderm lineages have centrosomes but no cilia. Stem cell lines derived from embryonic lineages recapitulate the in vivo pattern: epiblast stem cells are ciliated, whereas trophoblast stem cells and extraembryonic endoderm (XEN) stem cells lack cilia. Basal bodies in XEN cells are mature and can form cilia when the AURKA-HDAC6 cilium disassembly pathway is inhibited. The lineage-dependent distribution of cilia is stable throughout much of gestation, defining which cells in the placenta and yolk sac are able to respond to Hedgehog ligands.
    MeSH term(s) ADP-Ribosylation Factors/metabolism ; Animals ; Basal Bodies/metabolism ; Cell Line ; Cell Lineage ; Chickens ; Cilia/metabolism ; Embryo Implantation ; Embryo, Mammalian/cytology ; Embryo, Mammalian/metabolism ; Endoderm/cytology ; Endoderm/metabolism ; Female ; Gastrulation ; Mice ; Pregnancy ; Yolk Sac/cytology ; Yolk Sac/metabolism
    Chemical Substances Arl13b protein, mouse ; ADP-Ribosylation Factors (EC 3.6.5.2)
    Language English
    Publishing date 2015-02
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 1474722-4
    ISSN 1476-4679 ; 1465-7392
    ISSN (online) 1476-4679
    ISSN 1465-7392
    DOI 10.1038/ncb3091
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: The Meckel syndrome- associated protein MKS1 functionally interacts with components of the BBSome and IFT complexes to mediate ciliary trafficking and hedgehog signaling.

    Sarah C Goetz / Fiona Bangs / Chloe L Barrington / Nicholas Katsanis / Kathryn V Anderson

    PLoS ONE, Vol 12, Iss 3, p e

    2017  Volume 0173399

    Abstract: The importance of primary cilia in human health is underscored by the link between ciliary dysfunction and a group of primarily recessive genetic disorders with overlapping clinical features, now known as ciliopathies. Many of the proteins encoded by ... ...

    Abstract The importance of primary cilia in human health is underscored by the link between ciliary dysfunction and a group of primarily recessive genetic disorders with overlapping clinical features, now known as ciliopathies. Many of the proteins encoded by ciliopathy-associated genes are components of a handful of multi-protein complexes important for the transport of cargo to the basal body and/or into the cilium. A key question is whether different complexes cooperate in cilia formation, and whether they participate in cilium assembly in conjunction with intraflagellar transport (IFT) proteins. To examine how ciliopathy protein complexes might function together, we have analyzed double mutants of an allele of the Meckel syndrome (MKS) complex protein MKS1 and the BBSome protein BBS4. We find that Mks1; Bbs4 double mutant mouse embryos exhibit exacerbated defects in Hedgehog (Hh) dependent patterning compared to either single mutant, and die by E14.5. Cells from double mutant embryos exhibit a defect in the trafficking of ARL13B, a ciliary membrane protein, resulting in disrupted ciliary structure and signaling. We also examined the relationship between the MKS complex and IFT proteins by analyzing double mutant between Mks1 and a hypomorphic allele of the IFTB component Ift172. Despite each single mutant surviving until around birth, Mks1; Ift172avc1 double mutants die at mid-gestation, and exhibit a dramatic failure of cilia formation. We also find that Mks1 interacts genetically with an allele of Dync2h1, the IFT retrograde motor. Thus, we have demonstrated that the MKS transition zone complex cooperates with the BBSome to mediate trafficking of specific trans-membrane receptors to the cilium. Moreover, the genetic interaction of Mks1 with components of IFT machinery suggests that the transition zone complex facilitates IFT to promote cilium assembly and structure.
    Keywords Medicine ; R ; Science ; Q
    Subject code 612
    Language English
    Publisher Public Library of Science (PLoS)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: The kinesin-4 protein Kif7 regulates mammalian Hedgehog signalling by organizing the cilium tip compartment.

    He, Mu / Subramanian, Radhika / Bangs, Fiona / Omelchenko, Tatiana / Liem, Karel F / Kapoor, Tarun M / Anderson, Kathryn V

    Nature cell biology

    2014  Volume 16, Issue 7, Page(s) 663–672

    Abstract: Mammalian Hedgehog (Hh) signal transduction requires a primary cilium, a microtubule-based organelle, and the Gli-Sufu complexes that mediate Hh signalling, which are enriched at cilia tips. Kif7, a kinesin-4 family protein, is a conserved regulator of ... ...

    Abstract Mammalian Hedgehog (Hh) signal transduction requires a primary cilium, a microtubule-based organelle, and the Gli-Sufu complexes that mediate Hh signalling, which are enriched at cilia tips. Kif7, a kinesin-4 family protein, is a conserved regulator of the Hh signalling pathway and a human ciliopathy protein. Here we show that Kif7 localizes to the cilium tip, the site of microtubule plus ends, where it limits cilium length and controls cilium structure. Purified recombinant Kif7 binds the plus ends of growing microtubules in vitro, where it reduces the rate of microtubule growth and increases the frequency of microtubule catastrophe. Kif7 is not required for normal intraflagellar transport or for trafficking of Hh pathway proteins into cilia. Instead, a central function of Kif7 in the mammalian Hh pathway is to control cilium architecture and to create a single cilium tip compartment, where Gli-Sufu activity can be correctly regulated.
    MeSH term(s) Animals ; Axoneme/genetics ; Axoneme/metabolism ; Cell Line ; Cells, Cultured ; Cilia/chemistry ; Cilia/metabolism ; Fibroblasts/metabolism ; HEK293 Cells ; Hedgehog Proteins/metabolism ; Humans ; Kinesins/genetics ; Kinesins/metabolism ; Mice ; Microtubules/metabolism ; Mutation ; NIH 3T3 Cells ; Protein Binding ; Protein Transport ; Recombinant Proteins/genetics ; Recombinant Proteins/metabolism ; Signal Transduction
    Chemical Substances Hedgehog Proteins ; Recombinant Proteins ; Kif7 protein, mouse (EC 3.6.1.-) ; Kinesins (EC 3.6.4.4)
    Language English
    Publishing date 2014-06-22
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 1474722-4
    ISSN 1476-4679 ; 1465-7392
    ISSN (online) 1476-4679
    ISSN 1465-7392
    DOI 10.1038/ncb2988
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Enhancer elements upstream of the SHOX gene are active in the developing limb.

    Durand, Claudia / Bangs, Fiona / Signolet, Jason / Decker, Eva / Tickle, Cheryll / Rappold, Gudrun

    European journal of human genetics : EJHG

    2009  Volume 18, Issue 5, Page(s) 527–532

    Abstract: Léri-Weill Dyschondrosteosis (LWD) is a dominant skeletal disorder characterized by short stature and distinct bone anomalies. SHOX gene mutations and deletions of regulatory elements downstream of SHOX resulting in haploinsufficiency have been found in ... ...

    Abstract Léri-Weill Dyschondrosteosis (LWD) is a dominant skeletal disorder characterized by short stature and distinct bone anomalies. SHOX gene mutations and deletions of regulatory elements downstream of SHOX resulting in haploinsufficiency have been found in patients with LWD. SHOX encodes a homeodomain transcription factor and is known to be expressed in the developing limb. We have now analyzed the regulatory significance of the region upstream of the SHOX gene. By comparative genomic analyses, we identified several conserved non-coding elements, which subsequently were tested in an in ovo enhancer assay in both chicken limb bud and cornea, where SHOX is also expressed. In this assay, we found three enhancers to be active in the developing chicken limb, but none were functional in the developing cornea. A screening of 60 LWD patients with an intact SHOX coding and downstream region did not yield any deletion of the upstream enhancer region. Thus, we speculate that SHOX upstream deletions occur at a lower frequency because of the structural organization of this genomic region and/or that SHOX upstream deletions may cause a phenotype that differs from the one observed in LWD.
    MeSH term(s) Animals ; Chick Embryo ; Chickens/genetics ; Chromosomes, Human, X/genetics ; Conserved Sequence/genetics ; DNA, Intergenic/genetics ; Enhancer Elements, Genetic/genetics ; Extremities/embryology ; Genetic Testing ; Genome, Human/genetics ; Homeodomain Proteins/genetics ; Humans ; Sequence Homology, Nucleic Acid ; Short Stature Homeobox Protein ; Telomere/genetics
    Chemical Substances DNA, Intergenic ; Homeodomain Proteins ; SHOX protein, human ; Short Stature Homeobox Protein
    Language English
    Publishing date 2009-12-09
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1141470-4
    ISSN 1476-5438 ; 1018-4813
    ISSN (online) 1476-5438
    ISSN 1018-4813
    DOI 10.1038/ejhg.2009.216
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: 3D expression patterns of cell cycle genes in the developing chick wing and comparison with expression patterns of genes implicated in digit specification.

    Welten, Monique / Pavlovska, Gordana / Chen, Yu / Teruoka, Yuko / Fisher, Malcolm / Bangs, Fiona / Towers, Matthew / Tickle, Cheryll

    Developmental dynamics : an official publication of the American Association of Anatomists

    2011  Volume 240, Issue 5, Page(s) 1278–1288

    Abstract: Sonic hedgehog (Shh) signalling controls integrated specification of digit pattern and growth in the chick wing but downstream gene networks remain to be unravelled. We analysed 3D expression patterns of genes encoding cell cycle regulators using Optical ...

    Abstract Sonic hedgehog (Shh) signalling controls integrated specification of digit pattern and growth in the chick wing but downstream gene networks remain to be unravelled. We analysed 3D expression patterns of genes encoding cell cycle regulators using Optical Projection Tomography. Hierarchical clustering of spatial matrices of gene expression revealed a dorsal layer of the wing bud, in which almost all genes were expressed, and that genes encoding positive cell cycle regulators had similar expression patterns while those of N-myc and CyclinD2 were distinct but closely related. We compared these patterns computationally with those of genes implicated in digit specification and Ptch1, 50 genes in total. Nineteen genes have similar posterior expression to Ptch1, including Hoxd13, Sall1, Hoxd11, and Bmp2, all likely Gli targets in mouse limb, and cell cycle genes, N-myc, CyclinD2. We suggest that these genes contribute to a network integrating digit specification and growth in response to Shh.
    MeSH term(s) Animals ; Bone Morphogenetic Protein 2/genetics ; Bone Morphogenetic Protein 2/metabolism ; Chick Embryo ; Chickens ; Extremities/embryology ; Extremities/physiology ; Gene Expression Regulation, Developmental/genetics ; Gene Expression Regulation, Developmental/physiology ; Genes, cdc/physiology ; Homeodomain Proteins/genetics ; Homeodomain Proteins/metabolism ; Transcription Factors/genetics ; Transcription Factors/metabolism ; Wings, Animal/embryology ; Wings, Animal/metabolism
    Chemical Substances Bone Morphogenetic Protein 2 ; Homeodomain Proteins ; Transcription Factors
    Language English
    Publishing date 2011-05
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1102541-4
    ISSN 1097-0177 ; 1058-8388
    ISSN (online) 1097-0177
    ISSN 1058-8388
    DOI 10.1002/dvdy.22633
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Generation of mice with functional inactivation of talpid3, a gene first identified in chicken.

    Bangs, Fiona / Antonio, Nicole / Thongnuek, Peerapat / Welten, Monique / Davey, Megan G / Briscoe, James / Tickle, Cheryll

    Development (Cambridge, England)

    2011  Volume 138, Issue 15, Page(s) 3261–3272

    Abstract: Specification of digit number and identity is central to digit pattern in vertebrate limbs. The classical talpid(3) chicken mutant has many unpatterned digits together with defects in other regions, depending on hedgehog (Hh) signalling, and exhibits ... ...

    Abstract Specification of digit number and identity is central to digit pattern in vertebrate limbs. The classical talpid(3) chicken mutant has many unpatterned digits together with defects in other regions, depending on hedgehog (Hh) signalling, and exhibits embryonic lethality. The talpid(3) chicken has a mutation in KIAA0586, which encodes a centrosomal protein required for the formation of primary cilia, which are sites of vertebrate Hh signalling. The highly conserved exons 11 and 12 of KIAA0586 are essential to rescue cilia in talpid(3) chicken mutants. We constitutively deleted these two exons to make a talpid3(-/-) mouse. Mutant mouse embryos lack primary cilia and, like talpid(3) chicken embryos, have face and neural tube defects but also defects in left/right asymmetry. Conditional deletion in mouse limb mesenchyme results in polydactyly and in brachydactyly and a failure of subperisoteal bone formation, defects that are attributable to abnormal sonic hedgehog and Indian hedgehog signalling, respectively. Like talpid(3) chicken limbs, the mutant mouse limbs are syndactylous with uneven digit spacing as reflected in altered Raldh2 expression, which is normally associated with interdigital mesenchyme. Both mouse and chicken mutant limb buds are broad and short. talpid3(-/-) mouse cells migrate more slowly than wild-type mouse cells, a change in cell behaviour that possibly contributes to altered limb bud morphogenesis. This genetic mouse model will facilitate further conditional approaches, epistatic experiments and open up investigation into the function of the novel talpid3 gene using the many resources available for mice.
    MeSH term(s) Animals ; Chick Embryo ; Chickens/genetics ; Cilia/metabolism ; Embryo, Mammalian/abnormalities ; Embryo, Mammalian/anatomy & histology ; Embryo, Mammalian/physiology ; Female ; Gene Expression Regulation, Developmental ; Hedgehog Proteins/genetics ; Hedgehog Proteins/metabolism ; Limb Buds/abnormalities ; Limb Buds/anatomy & histology ; Limb Buds/embryology ; Limb Buds/physiology ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Mice, Knockout ; Morphogenesis/genetics ; Osteogenesis/physiology ; Proteins/genetics ; Proteins/metabolism ; Signal Transduction/physiology
    Chemical Substances Hedgehog Proteins ; Proteins ; Shh protein, mouse
    Language English
    Publishing date 2011-05-25
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 90607-4
    ISSN 1477-9129 ; 0950-1991
    ISSN (online) 1477-9129
    ISSN 0950-1991
    DOI 10.1242/dev.063602
    Database MEDical Literature Analysis and Retrieval System OnLINE

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