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Singh S, Nampoothiri S, Narayanan DL, Chaudhry C, Salvankar S, Girisha KM. Biallelic loss of function variants in FUZ result in an orofaciodigital syndrome. Eur J Hum Genet 2024:10.1038/s41431-024-01619-6. [PMID: 38702430 DOI: 10.1038/s41431-024-01619-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 04/03/2024] [Accepted: 04/18/2024] [Indexed: 05/06/2024] Open
Abstract
Orofaciodigital syndrome is a distinctive subtype of skeletal ciliopathies. Disease-causing variants in the genes encoding the CPLANE complex result in a wide variety of skeletal dysplasia with disturbed ciliary functions. The phenotypic spectrum includes orofaciodigital syndrome and short rib polydactyly syndrome. FUZ, as a part of the CPLANE complex, is involved in intraflagellar vesicular trafficking within primary cilia. Previously, the variants, c.98_111+9del and c.851G>T in FUZ were identified in two individuals with a skeletal ciliopathy, manifesting digital anomalies (polydactyly, syndactyly), orofacial cleft, short ribs and cardiac defects. Here, we present two novel variants, c.601G>A and c.625_636del in biallelic state, in two additional subjects exhibiting phenotypic overlap with the previously reported cases. Our findings underscore the association between biallelic loss of function variants in FUZ and skeletal ciliopathy akin to orofaciodigital syndrome.
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Affiliation(s)
- Swati Singh
- Department of Medical Genetics, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Sheela Nampoothiri
- Department of Paediatric Genetics, Amrita Institute of Medical Sciences and Research Centre, Kochi, India
| | - Dhanya Lakshmi Narayanan
- Department of Medical Genetics, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | | | | | - Katta M Girisha
- Department of Medical Genetics, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India.
- Suma Genomics Private Limited, Manipal, India.
- Department of Genetics, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Sultanate of Oman.
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Liu Z, Sa G, Zhang Z, Wu Q, Zhou J, Yang X. Regulatory role of primary cilia in oral and maxillofacial development and disease. Tissue Cell 2024; 88:102389. [PMID: 38714113 DOI: 10.1016/j.tice.2024.102389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 04/11/2024] [Accepted: 04/16/2024] [Indexed: 05/09/2024]
Abstract
Primary cilia have versatile functions, such as receiving signals from the extracellular microenvironment, mediating signaling transduction, and transporting ciliary substances, in tissue and organ development and clinical disease pathogenesis. During early development (embryos within 10 weeks) in the oral and maxillofacial region, defects in the structure and function of primary cilia can result in severe craniofacial malformations. For example, mice with mutations in the cilia-related genes Kif3a and IFT88 exhibit midline expansion and cleft lip/palate, which occur due to abnormalities in the fusion of the single frontonasal prominence and maxillary prominences. In the subsequent development of the oral and maxillofacial region, we discussed the regulatory role of primary cilia in the development of the maxilla, mandible, Meckel cartilage, condylar cartilage, lip, tongue, and tooth, among others. Moreover, primary cilia are promising regulators in some oral and maxillofacial diseases, such as tumors and malocclusion. We also summarize the regulatory mechanisms of primary cilia in oral and maxillofacial development and related diseases, including their role in various signaling transduction pathways. For example, aplasia of submandibular glands in the Kif3a mutant mice is associated with a decrease in SHH signaling within the glands. This review summarizes the similarities and specificities of the role of primary cilia in tissue and organ development and disease progression in the oral and maxillofacial region, which is expected to contribute several ideas for the treatment of primary cilia-related diseases.
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Affiliation(s)
- Zhan Liu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, PR China
| | - Guoliang Sa
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, PR China; Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Wuhan University, Wuhan, PR China
| | - Zhuoyu Zhang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, PR China
| | - Qingwei Wu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, PR China
| | - Jing Zhou
- School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Jinan, PR China
| | - Xuewen Yang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, PR China; Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Wuhan University, Wuhan, PR China.
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Caiaffa CD, Ambekar YS, Singh M, Lin YL, Wlodarczyk B, Aglyamov SR, Scarcelli G, Larin KV, Finnell RH. Disruption of Fuz in mouse embryos generates hypoplastic hindbrain development and reduced cranial nerve ganglia. Dev Dyn 2024. [PMID: 38501709 DOI: 10.1002/dvdy.702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 02/07/2024] [Accepted: 02/20/2024] [Indexed: 03/20/2024] Open
Abstract
BACKGROUND The brain and spinal cord formation is initiated in the earliest stages of mammalian pregnancy in a highly organized process known as neurulation. Environmental or genetic interferences can impair neurulation, resulting in clinically significant birth defects known collectively as neural tube defects. The Fuz gene encodes a subunit of the CPLANE complex, a macromolecular planar polarity effector required for ciliogenesis. Ablation of Fuz in mouse embryos results in exencephaly and spina bifida, including dysmorphic craniofacial structures due to defective cilia formation and impaired Sonic Hedgehog signaling. RESULTS We demonstrate that knocking Fuz out during embryonic mouse development results in a hypoplastic hindbrain phenotype, displaying abnormal rhombomeres with reduced length and width. This phenotype is associated with persistent reduction of ventral neuroepithelial stiffness in a notochord adjacent area at the level of the rhombomere 5. The formation of cranial and paravertebral ganglia is also impaired in these embryos. CONCLUSIONS This study reveals that hypoplastic hindbrain development, identified by abnormal rhombomere morphology and persistent loss of ventral neuroepithelial stiffness, precedes exencephaly in Fuz ablated murine mutants, indicating that the gene Fuz has a critical function sustaining normal neural tube development and neuronal differentiation.
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Affiliation(s)
- Carlo Donato Caiaffa
- Center for Precision Environmental Health, Baylor College of Medicine, Houston, Texas, USA
- Department of Pediatrics, Dell Pediatric Research Institute, University of Texas at Austin Dell Medical School, Austin, Texas, USA
| | - Yogeshwari S Ambekar
- Department of Biomedical Engineering, University of Houston, Houston, Texas, USA
| | - Manmohan Singh
- Department of Biomedical Engineering, University of Houston, Houston, Texas, USA
| | - Ying Linda Lin
- Center for Precision Environmental Health, Baylor College of Medicine, Houston, Texas, USA
| | - Bogdan Wlodarczyk
- Center for Precision Environmental Health, Baylor College of Medicine, Houston, Texas, USA
| | - Salavat R Aglyamov
- Department of Biomedical Engineering, University of Houston, Houston, Texas, USA
| | - Giuliano Scarcelli
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland, USA
| | - Kirill V Larin
- Department of Biomedical Engineering, University of Houston, Houston, Texas, USA
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, Texas, USA
| | - Richard H Finnell
- Center for Precision Environmental Health, Baylor College of Medicine, Houston, Texas, USA
- Department of Molecular and Cellular Biology, Molecular and Human Genetics and Medicine, Baylor College of Medicine, Houston, Texas, USA
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Lodge EJ, Barrell WB, Liu KJ, Andoniadou CL. The Fuzzy planar cell polarity protein (FUZ), necessary for primary cilium formation, is essential for pituitary development. J Anat 2024; 244:358-367. [PMID: 37794731 PMCID: PMC10780146 DOI: 10.1111/joa.13961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 09/19/2023] [Accepted: 09/20/2023] [Indexed: 10/06/2023] Open
Abstract
The primary cilium is an essential organelle that is important for normal cell signalling during development and homeostasis but its role in pituitary development has not been reported. The primary cilium facilitates signal transduction for multiple pathways, the best-characterised being the SHH pathway, which is known to be necessary for correct pituitary gland development. FUZ is a planar cell polarity (PCP) effector that is essential for normal ciliogenesis, where the primary cilia of Fuz-/- mutants are shorter or non-functional. FUZ is part of a group of proteins required for recruiting retrograde intraflagellar transport proteins to the base of the organelle. Previous work has reported ciliopathy phenotypes in Fuz-/- homozygous null mouse mutants, including neural tube defects, craniofacial abnormalities, and polydactyly, alongside PCP defects including kinked/curly tails and heart defects. Interestingly, the pituitary gland was reported to be missing in Fuz-/- mutants at 14.5 dpc but the mechanisms underlying this phenotype were not investigated. Here, we have analysed the pituitary development of Fuz-/- mutants. Histological analyses reveal that Rathke's pouch (RP) is initially induced normally but is not specified and fails to express LHX3, resulting in hypoplasia and apoptosis. Characterisation of SHH signalling reveals reduced pathway activation in Fuz-/- mutant relative to control embryos, leading to deficient specification of anterior pituitary fate. Analyses of the key developmental signals FGF8 and BMP4, which are influenced by SHH, reveal abnormal patterning in the ventral diencephalon, contributing further to abnormal RP development. Taken together, our analyses suggest that primary cilia are required for normal pituitary specification through SHH signalling.
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Affiliation(s)
- Emily J. Lodge
- Centre for Craniofacial and Regenerative BiologyKing's College LondonLondonUK
| | - William B. Barrell
- Centre for Craniofacial and Regenerative BiologyKing's College LondonLondonUK
| | - Karen J. Liu
- Centre for Craniofacial and Regenerative BiologyKing's College LondonLondonUK
| | - Cynthia L. Andoniadou
- Centre for Craniofacial and Regenerative BiologyKing's College LondonLondonUK
- Department of Medicine IIIUniversity Hospital Carl Gustav Carus, Technische Universität DresdenDresdenGermany
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Chen ZS, Ou M, Taylor S, Dafinca R, Peng SI, Talbot K, Chan HYE. Mutant GGGGCC RNA prevents YY1 from binding to Fuzzy promoter which stimulates Wnt/β-catenin pathway in C9ALS/FTD. Nat Commun 2023; 14:8420. [PMID: 38110419 PMCID: PMC10728118 DOI: 10.1038/s41467-023-44215-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 12/05/2023] [Indexed: 12/20/2023] Open
Abstract
The GGGGCC hexanucleotide repeat expansion mutation in the chromosome 9 open reading frame 72 (C9orf72) gene is a major genetic cause of amyotrophic lateral sclerosis and frontotemporal dementia (C9ALS/FTD). In this study, we demonstrate that the zinc finger (ZF) transcriptional regulator Yin Yang 1 (YY1) binds to the promoter region of the planar cell polarity gene Fuzzy to regulate its transcription. We show that YY1 interacts with GGGGCC repeat RNA via its ZF and that this interaction compromises the binding of YY1 to the FuzzyYY1 promoter sites, resulting in the downregulation of Fuzzy transcription. The decrease in Fuzzy protein expression in turn activates the canonical Wnt/β-catenin pathway and induces synaptic deficits in C9ALS/FTD neurons. Our findings demonstrate a C9orf72 GGGGCC RNA-initiated perturbation of YY1-Fuzzy transcriptional control that implicates aberrant Wnt/β-catenin signalling in C9ALS/FTD-associated neurodegeneration. This pathogenic cascade provides a potential new target for disease-modifying therapy.
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Affiliation(s)
- Zhefan Stephen Chen
- School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
- Oxford Motor Neuron Disease Centre, Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DU, UK
| | - Mingxi Ou
- School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Stephanie Taylor
- Oxford Motor Neuron Disease Centre, Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DU, UK
| | - Ruxandra Dafinca
- Oxford Motor Neuron Disease Centre, Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DU, UK
- Kavli Institute for Nanoscience Discovery, University of Oxford, Dorothy Crowfoot Hodgkin Building, South Parks Road, Oxford, OX1 3QU, UK
| | - Shaohong Isaac Peng
- School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Kevin Talbot
- Oxford Motor Neuron Disease Centre, Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DU, UK.
- Kavli Institute for Nanoscience Discovery, University of Oxford, Dorothy Crowfoot Hodgkin Building, South Parks Road, Oxford, OX1 3QU, UK.
| | - Ho Yin Edwin Chan
- School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China.
- Gerald Choa Neuroscience Institute, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China.
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6
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Caiaffa CD, Ambekar YS, Singh M, Lin YL, Wlodarczyk B, Aglyamov SR, Scarcelli G, Larin KV, Finnell R. Disruption of Fuz in mouse embryos generates hypoplastic hindbrain development and reduced cranial nerve ganglia. bioRxiv 2023:2023.08.04.552068. [PMID: 37577618 PMCID: PMC10418252 DOI: 10.1101/2023.08.04.552068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
The formation of the brain and spinal cord is initiated in the earliest stages of mammalian pregnancy in a highly organized process known as neurulation. Convergent and extension movements transforms a flat sheet of ectodermal cells into a narrow and elongated line of neuroepithelia, while a major source of Sonic Hedgehog signaling from the notochord induces the overlying neuroepithelial cells to form two apposed neural folds. Afterward, neural tube closure occurs by synchronized coordination of the surface ectoderm and adjacent neuroepithelial walls at specific axial regions known as neuropores. Environmental or genetic interferences can impair neurulation resulting in neural tube defects. The Fuz gene encodes a subunit of the CPLANE complex, which is a macromolecular planar polarity effector required for ciliogenesis. Ablation of Fuz in mouse embryos results in exencephaly and spina bifida, including dysmorphic craniofacial structures due to defective cilia formation and impaired Sonic Hedgehog signaling. In this work, we demonstrate that knocking Fuz out during embryonic mouse development results in a hypoplastic hindbrain phenotype, displaying abnormal rhombomeres with reduced length and width. This phenotype is associated with persistent loss of ventral neuroepithelial stiffness, in a notochord adjacent area at the level of the rhombomere 5, preceding the development of exencephaly in Fuz ablated mutants. The formation of cranial and paravertebral ganglia is also impaired in these embryos, indicating that Fuz has a critical function sustaining normal neural tube development and neuronal differentiation. SIGNIFICANCE STATEMENT Neural tube defects (NTDs) are a common cause of disability in children, representing the second most common congenital structural malformation in humans following only congenital cardiovascular malformations. NTDs affect approximately 1 to 2 pregnancies per 1000 births every year worldwide, when the mechanical forces folding the neural plate fails to close at specific neuropores located anteriorly (cranial) or posteriorly (caudal) along the neural tube, in a process known as neurulation, which happens throughout the third and fourth weeks of human pregnancy.
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7
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Jin S, Campbell EJ, Ip CK, Layfield S, Bathgate RAD, Herzog H, Lawrence AJ. Molecular Profiling of VGluT1 AND VGluT2 Ventral Subiculum to Nucleus Accumbens Shell Projections. Neurochem Res 2023:10.1007/s11064-023-03921-z. [PMID: 37017888 DOI: 10.1007/s11064-023-03921-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 03/14/2023] [Accepted: 03/24/2023] [Indexed: 04/06/2023]
Abstract
The nucleus accumbens shell is a critical node in reward circuitry, encoding environments associated with reward. Long-range inputs from the ventral hippocampus (ventral subiculum) to the nucleus accumbens shell have been identified, yet their precise molecular phenotype remains to be determined. Here we used retrograde tracing to identify the ventral subiculum as the brain region with the densest glutamatergic (VGluT1-Slc17a7) input to the shell. We then used circuit-directed translating ribosome affinity purification to examine the molecular characteristics of distinct glutamatergic (VGluT1, VGluT2-Slc17a6) ventral subiculum to nucleus accumbens shell projections. We immunoprecipitated translating ribosomes from this population of projection neurons and analysed molecular connectomic information using RNA sequencing. We found differential gene enrichment across both glutamatergic projection neuron subtypes. In VGluT1 projections, we found enrichment of Pfkl, a gene involved in glucose metabolism. In VGluT2 projections, we found a depletion of Sparcl1 and Dlg1, genes known to play a role in depression- and addiction-related behaviours. These findings highlight potential glutamatergic neuronal-projection-specific differences in ventral subiculum to nucleus accumbens shell projections. Together these data advance our understanding of the phenotype of a defined brain circuit.
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Affiliation(s)
- Shubo Jin
- The Florey Institute of Neuroscience and Mental Health, Melbourne Brain Centre, The University of Melbourne, Parkville, Melbourne, VIC, 3052, Australia
- Florey Department of Neuroscience and Mental Health, The University of Melbourne, Parkville, Melbourne, VIC, 3010, Australia
| | - Erin J Campbell
- The Florey Institute of Neuroscience and Mental Health, Melbourne Brain Centre, The University of Melbourne, Parkville, Melbourne, VIC, 3052, Australia.
- Florey Department of Neuroscience and Mental Health, The University of Melbourne, Parkville, Melbourne, VIC, 3010, Australia.
| | - Chi Kin Ip
- Neuroscience Division, Garvan Institute of Medical Research, Darlinghurst, Sydney, NSW, 2010, Australia
- Faculty of Medicine, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Sharon Layfield
- The Florey Institute of Neuroscience and Mental Health, Melbourne Brain Centre, The University of Melbourne, Parkville, Melbourne, VIC, 3052, Australia
- Florey Department of Neuroscience and Mental Health, The University of Melbourne, Parkville, Melbourne, VIC, 3010, Australia
| | - Ross A D Bathgate
- The Florey Institute of Neuroscience and Mental Health, Melbourne Brain Centre, The University of Melbourne, Parkville, Melbourne, VIC, 3052, Australia
- Florey Department of Neuroscience and Mental Health, The University of Melbourne, Parkville, Melbourne, VIC, 3010, Australia
- Department of Biochemistry and Pharmacology, The University of Melbourne, Parkville, Melbourne, VIC, 3010, Australia
| | - Herbert Herzog
- Neuroscience Division, Garvan Institute of Medical Research, Darlinghurst, Sydney, NSW, 2010, Australia
- Faculty of Medicine, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Andrew J Lawrence
- The Florey Institute of Neuroscience and Mental Health, Melbourne Brain Centre, The University of Melbourne, Parkville, Melbourne, VIC, 3052, Australia.
- Florey Department of Neuroscience and Mental Health, The University of Melbourne, Parkville, Melbourne, VIC, 3010, Australia.
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Paese CLB, Chang CF, Kristeková D, Brugmann SA. Pharmacological intervention of the FGF-PTH axis as a potential therapeutic for craniofacial ciliopathies. Dis Model Mech 2022; 15:275968. [PMID: 35818799 PMCID: PMC9403750 DOI: 10.1242/dmm.049611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 07/05/2022] [Indexed: 11/20/2022] Open
Abstract
Ciliopathies represent a disease class characterized by a broad range of phenotypes including polycystic kidneys and skeletal anomalies. Ciliopathic skeletal phenotypes are among the most common and most difficult to treat due to a poor understanding of the pathological mechanisms leading to disease. Using an avian model (talpid2) for a human ciliopathy with both kidney and skeletal anomalies (Orofaciodigital syndrome 14), we identified disruptions in the FGF23-PTH axis that resulted in reduced calcium uptake in the developing mandible and subsequent micrognathia. While pharmacological intervention with the FDA-approved pan-FGFR inhibitor AZD4547 alone rescued expression of the FGF target Sprouty2, it did not significantly rescue micrognathia. In contrast, treatment with a cocktail of AZD4547 and Teriparatide acetate, a PTH agonist and FDA-approved treatment for osteoporosis, resulted in a molecular, cellular, and phenotypic rescue of ciliopathic micrognathia in talpid2 mutants. Together, these data provide novel insight into pathological molecular mechanisms associated with ciliopathic skeletal phenotypes and a potential therapeutic strategy for a pleiotropic disease class with limited to no treatment options.
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Affiliation(s)
- Christian Louis Bonatto Paese
- Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Ching-Fang Chang
- Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Daniela Kristeková
- Laboratory of Molecular Morphogenesis, Institute of Animal Physiology and Genetics, v.v.i., Czech Academy of Sciences, Brno 602 00, Czech Republic.,Department of Experimental Biology, Faculty of Science, Masaryk University, Brno 625 00, Czech Republic
| | - Samantha A Brugmann
- Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.,Division of Plastic Surgery, Department of Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
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9
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Barrell WB, Adel Al-Lami H, Goos JAC, Swagemakers SMA, van Dooren M, Torban E, van der Spek PJ, Mathijssen IMJ, Liu KJ. Identification of a novel variant of the ciliopathic gene FUZZY associated with craniosynostosis. Eur J Hum Genet 2022; 30:282-290. [PMID: 34719684 PMCID: PMC8904458 DOI: 10.1038/s41431-021-00988-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 10/04/2021] [Accepted: 10/14/2021] [Indexed: 11/08/2022] Open
Abstract
Craniosynostosis is a birth defect occurring in approximately one in 2000 live births, where premature fusion of the cranial bones inhibits growth of the skull during critical periods of brain development. The resulting changes in skull shape can lead to compression of the brain, causing severe complications. While we have some understanding of the molecular pathology of craniosynostosis, a large proportion of cases are of unknown genetic aetiology. Based on studies in mouse, we previously proposed that the ciliopathy gene Fuz should be considered a candidate craniosynostosis gene. Here, we report a novel variant of FUZ (c.851 G > C, p.(Arg284Pro)) found in monozygotic twins presenting with craniosynostosis. To investigate whether Fuz has a direct role in regulating osteogenic fate and mineralisation, we cultured primary osteoblasts and mouse embryonic fibroblasts (MEFs) from Fuz mutant mice. Loss of Fuz resulted in increased osteoblastic mineralisation. This suggests that FUZ protein normally acts as a negative regulator of osteogenesis. We then used Fuz mutant MEFs, which lose functional primary cilia, to test whether the FUZ p.(Arg284Pro) variant could restore FUZ function during ciliogenesis. We found that expression of the FUZ p.(Arg284Pro) variant was sufficient to partially restore cilia numbers, but did not mediate a comparable response to Hedgehog pathway activation. Together, this suggests the osteogenic effects of FUZ p.(Arg284Pro) do not depend upon initiation of ciliogenesis.
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Affiliation(s)
- William B Barrell
- Centre for Craniofacial and Regenerative Biology, King's College London, London, SE1 9RT, UK
| | - Hadeel Adel Al-Lami
- Centre for Craniofacial and Regenerative Biology, King's College London, London, SE1 9RT, UK
- Department of Orthodontics, College of Dentistry, University of Baghdad, Baghdad, Iraq
| | - Jacqueline A C Goos
- Department of Plastic and Reconstructive Surgery and Hand Surgery, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Sigrid M A Swagemakers
- Department of Bioinformatics, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Marieke van Dooren
- Department of Plastic and Reconstructive Surgery and Hand Surgery, Erasmus University Medical Centre, Rotterdam, The Netherlands
- Department of Clinical Genetics, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Elena Torban
- Department of Medicine, McGill University Health Centre, Montreal, Canada
| | - Peter J van der Spek
- Department of Bioinformatics, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Irene M J Mathijssen
- Department of Plastic and Reconstructive Surgery and Hand Surgery, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Karen J Liu
- Centre for Craniofacial and Regenerative Biology, King's College London, London, SE1 9RT, UK.
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10
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Jaruga A, Ksiazkiewicz J, Kuzniarz K, Tylzanowski P. Orofacial Cleft and Mandibular Prognathism-Human Genetics and Animal Models. Int J Mol Sci 2022; 23:ijms23020953. [PMID: 35055138 PMCID: PMC8779325 DOI: 10.3390/ijms23020953] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 12/24/2021] [Accepted: 01/13/2022] [Indexed: 12/12/2022] Open
Abstract
Many complex molecular interactions are involved in the process of craniofacial development. Consequently, the network is sensitive to genetic mutations that may result in congenital malformations of varying severity. The most common birth anomalies within the head and neck are orofacial clefts (OFCs) and prognathism. Orofacial clefts are disorders with a range of phenotypes such as the cleft of the lip with or without cleft palate and isolated form of cleft palate with unilateral and bilateral variations. They may occur as an isolated abnormality (nonsyndromic-NSCLP) or coexist with syndromic disorders. Another cause of malformations, prognathism or skeletal class III malocclusion, is characterized by the disproportionate overgrowth of the mandible with or without the hypoplasia of maxilla. Both syndromes may be caused by the presence of environmental factors, but the majority of them are hereditary. Several mutations are linked to those phenotypes. In this review, we summarize the current knowledge regarding the genetics of those phenotypes and describe genotype-phenotype correlations. We then present the animal models used to study these defects.
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Affiliation(s)
- Anna Jaruga
- Laboratory of Molecular Genetics, Department of Biomedical Sciences, Medical University of Lublin, Chodzki 1, 20-093 Lublin, Poland; (A.J.); (J.K.)
| | - Jakub Ksiazkiewicz
- Laboratory of Molecular Genetics, Department of Biomedical Sciences, Medical University of Lublin, Chodzki 1, 20-093 Lublin, Poland; (A.J.); (J.K.)
- Center for Molecular and Vascular Biology, Department of Cardiovascular Sciences, University of Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Krystian Kuzniarz
- Department of Maxillofacial Surgery, Medical University of Lublin, Staszica 11, 20-081 Lublin, Poland;
| | - Przemko Tylzanowski
- Laboratory of Molecular Genetics, Department of Biomedical Sciences, Medical University of Lublin, Chodzki 1, 20-093 Lublin, Poland; (A.J.); (J.K.)
- Department of Development and Regeneration, University of Leuven, Herestraat 49, 3000 Leuven, Belgium
- Correspondence:
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11
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Kim SE, Robles-Lopez K, Cao X, Liu K, Chothani PJ, Bhavani N, Rahman L, Mukhopadhyay S, Wlodarczyk BJ, Finnell RH. Wnt1 Lineage Specific Deletion of Gpr161 Results in Embryonic Midbrain Malformation and Failure of Craniofacial Skeletal Development. Front Genet 2021; 12:761418. [PMID: 34887903 PMCID: PMC8650154 DOI: 10.3389/fgene.2021.761418] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 11/04/2021] [Indexed: 11/13/2022] Open
Abstract
Sonic hedgehog (Shh) signaling regulates multiple morphogenetic processes during embryonic neurogenesis and craniofacial skeletal development. Gpr161 is a known negative regulator of Shh signaling. Nullizygous Gpr161 mice are embryonic lethal, presenting with structural defects involving the neural tube and the craniofacies. However, the lineage specific role of Gpr161 in later embryonic development has not been thoroughly investigated. We studied the Wnt1-Cre lineage specific role of Gpr161 during mouse embryonic development. We observed three major gross morphological phenotypes in Gpr161 cKO (Gpr161 f/f; Wnt1-Cre) fetuses; protrusive tectum defect, encephalocele, and craniofacial skeletal defect. The overall midbrain tissues were expanded and cell proliferation in ventricular zones of midbrain was increased in Gpr161 cKO fetuses, suggesting that protrusive tectal defects in Gpr161 cKO are secondary to the increased proliferation of midbrain neural progenitor cells. Shh signaling activity as well as upstream Wnt signaling activity were increased in midbrain tissues of Gpr161 cKO fetuses. RNA sequencing further suggested that genes in the Shh, Wnt, Fgf and Notch signaling pathways were differentially regulated in the midbrain of Gpr161 cKO fetuses. Finally, we determined that cranial neural crest derived craniofacial bone formation was significantly inhibited in Gpr161 cKO fetuses, which partly explains the development of encephalocele. Our results suggest that Gpr161 plays a distinct role in midbrain development and in the formation of the craniofacial skeleton during mouse embryogenesis.
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Affiliation(s)
- Sung-Eun Kim
- Department of Pediatrics, Dell Pediatric Research Institute, University of Texas at Austin Dell Medical School, Austin, TX, United States
| | - Karla Robles-Lopez
- Department of Pediatrics, Dell Pediatric Research Institute, University of Texas at Austin Dell Medical School, Austin, TX, United States.,Center for Precision Environmental Health, Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, United States
| | - Xuanye Cao
- Center for Precision Environmental Health, Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, United States
| | - Kristyn Liu
- Department of Pediatrics, Dell Pediatric Research Institute, University of Texas at Austin Dell Medical School, Austin, TX, United States
| | - Pooja J Chothani
- Department of Pediatrics, Dell Pediatric Research Institute, University of Texas at Austin Dell Medical School, Austin, TX, United States
| | - Nikitha Bhavani
- Department of Pediatrics, Dell Pediatric Research Institute, University of Texas at Austin Dell Medical School, Austin, TX, United States
| | - Lauren Rahman
- Department of Pediatrics, Dell Pediatric Research Institute, University of Texas at Austin Dell Medical School, Austin, TX, United States
| | - Saikat Mukhopadhyay
- Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Bogdan J Wlodarczyk
- Center for Precision Environmental Health, Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, United States
| | - Richard H Finnell
- Department of Pediatrics, Dell Pediatric Research Institute, University of Texas at Austin Dell Medical School, Austin, TX, United States.,Center for Precision Environmental Health, Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, United States.,Departments of Molecular and Human Genetics and Medicine, Baylor College of Medicine, Houston, TX, United States
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12
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Nakamura M, Yang MC, Ashida K, Mayanagi M, Sasano Y. Calcification and resorption of mouse Meckel's cartilage analyzed by von Kossa and tartrate-resistant acid phosphatase histochemistry and scanning electron microscopy/energy-dispersive X-ray spectrometry. Anat Sci Int 2021; 97:213-220. [PMID: 34859366 DOI: 10.1007/s12565-021-00643-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 11/24/2021] [Indexed: 11/30/2022]
Abstract
Meckel's cartilage is essential for the normal development of the mandible. The fate of the intermediate portion of Meckel's cartilage is unique as most of it disappears soon after birth except for the part that forms the sphenomandibular ligament. The mechanism of the disappearance of Meckel's cartilage is unknown; therefore, this study was designed to investigate the process of Meckel's cartilage degradation, focusing on cartilage matrix calcification and the appearance of chondroclasts. Developing mouse mandibles at embryonic days 15, 16, 17, and 18, and postnatal day 2 were processed for whole-mount staining with alcian blue and alizarin red. The mandibles on embryonic days 15, 16, 17, and 18 were fixed and embedded in paraffin. Adjacent sections were processed for von Kossa and tartrate-resistant acid phosphatase (TRAP) histochemistry and scanning electron microscopy/energy-dispersive X-ray spectrometry (SEM/EDS). Calcification and the element concentrations of calcium, phosphorus, and carbon were examined with von Kossa histochemistry and SEM/EDS. The involvement of chondroclasts was investigated using TRAP histochemistry. The results demonstrated that the intermediate portion of Meckel's cartilage is resorbed by chondroclasts after chondrocyte hypertrophy and cartilage matrix calcification and that the mineral concentration of calcified Meckel's cartilage is comparable to that of the surrounding bone. This study contributes to the understanding of the mechanism of Meckel's cartilage resorption and provides useful insights into the development of the mandible.
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Affiliation(s)
- Megumi Nakamura
- Division of Craniofacial Development and Tissue Biology, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575, Japan.
| | - Mu-Chen Yang
- Division of Craniofacial Development and Tissue Biology, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575, Japan
| | - Keijyu Ashida
- Division of Craniofacial Development and Tissue Biology, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575, Japan
| | - Miyuki Mayanagi
- Division of Craniofacial Development and Tissue Biology, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575, Japan
| | - Yasuyuki Sasano
- Division of Craniofacial Development and Tissue Biology, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575, Japan
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13
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Arrigo AB, Lin JHI. Endocytic Protein Defects in the Neural Crest Cell Lineage and Its Pathway Are Associated with Congenital Heart Defects. Int J Mol Sci 2021; 22:ijms22168816. [PMID: 34445520 PMCID: PMC8396181 DOI: 10.3390/ijms22168816] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 08/09/2021] [Accepted: 08/10/2021] [Indexed: 02/02/2023] Open
Abstract
Endocytic trafficking is an under-appreciated pathway in cardiac development. Several genes related to endocytic trafficking have been uncovered in a mutagenic ENU screen, in which mutations led to congenital heart defects (CHDs). In this article, we review the relationship between these genes (including LRP1 and LRP2) and cardiac neural crest cells (CNCCs) during cardiac development. Mice with an ENU-induced Lrp1 mutation exhibit a spectrum of CHDs. Conditional deletion using a floxed Lrp1 allele with different Cre drivers showed that targeting neural crest cells with Wnt1-Cre expression replicated the full cardiac phenotypes of the ENU-induced Lrp1 mutation. In addition, LRP1 function in CNCCs is required for normal OFT lengthening and survival/expansion of the cushion mesenchyme, with other cell lineages along the NCC migratory path playing an additional role. Mice with an ENU-induced and targeted Lrp2 mutation demonstrated the cardiac phenotype of common arterial trunk (CAT). Although there is no impact on CNCCs in Lrp2 mutants, the loss of LRP2 results in the depletion of sonic hedgehog (SHH)-dependent cells in the second heart field. SHH is known to be crucial for CNCC survival and proliferation, which suggests LRP2 has a non-autonomous role in CNCCs. In this article, other endocytic trafficking proteins that are associated with CHDs that may play roles in the NCC pathway during development, such as AP1B1, AP2B1, FUZ, MYH10, and HECTD1, are reviewed.
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Affiliation(s)
- Angelo B. Arrigo
- Department of Developmental Biology, University of Pittsburgh, Pittsburgh, PA 15224, USA;
| | - Jiuann-Huey Ivy Lin
- Department of Developmental Biology, University of Pittsburgh, Pittsburgh, PA 15224, USA;
- Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA 15224, USA
- Correspondence: ; Tel.: +1-412-692-7366; Fax: +1-412-692-5169
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14
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Fabik J, Psutkova V, Machon O. The Mandibular and Hyoid Arches-From Molecular Patterning to Shaping Bone and Cartilage. Int J Mol Sci 2021; 22:7529. [PMID: 34299147 PMCID: PMC8303155 DOI: 10.3390/ijms22147529] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/02/2021] [Accepted: 07/05/2021] [Indexed: 12/16/2022] Open
Abstract
The mandibular and hyoid arches collectively make up the facial skeleton, also known as the viscerocranium. Although all three germ layers come together to assemble the pharyngeal arches, the majority of tissue within viscerocranial skeletal components differentiates from the neural crest. Since nearly one third of all birth defects in humans affect the craniofacial region, it is important to understand how signalling pathways and transcription factors govern the embryogenesis and skeletogenesis of the viscerocranium. This review focuses on mouse and zebrafish models of craniofacial development. We highlight gene regulatory networks directing the patterning and osteochondrogenesis of the mandibular and hyoid arches that are actually conserved among all gnathostomes. The first part of this review describes the anatomy and development of mandibular and hyoid arches in both species. The second part analyses cell signalling and transcription factors that ensure the specificity of individual structures along the anatomical axes. The third part discusses the genes and molecules that control the formation of bone and cartilage within mandibular and hyoid arches and how dysregulation of molecular signalling influences the development of skeletal components of the viscerocranium. In conclusion, we notice that mandibular malformations in humans and mice often co-occur with hyoid malformations and pinpoint the similar molecular machinery controlling the development of mandibular and hyoid arches.
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Affiliation(s)
- Jaroslav Fabik
- Department of Developmental Biology, Institute of Experimental Medicine of the Czech Academy of Sciences, 14220 Prague, Czech Republic; (J.F.); (V.P.)
- Department of Cell Biology, Faculty of Science, Charles University, 12800 Prague, Czech Republic
| | - Viktorie Psutkova
- Department of Developmental Biology, Institute of Experimental Medicine of the Czech Academy of Sciences, 14220 Prague, Czech Republic; (J.F.); (V.P.)
- Department of Cell Biology, Faculty of Science, Charles University, 12800 Prague, Czech Republic
| | - Ondrej Machon
- Department of Developmental Biology, Institute of Experimental Medicine of the Czech Academy of Sciences, 14220 Prague, Czech Republic; (J.F.); (V.P.)
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15
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Chen ZS, Lin X, Chan TF, Chan HYE. Pan-cancer investigation reveals mechanistic insights of planar cell polarity gene Fuz in carcinogenesis. Aging (Albany NY) 2021; 13:7259-7283. [PMID: 33658400 PMCID: PMC7993721 DOI: 10.18632/aging.202582] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Accepted: 01/13/2021] [Indexed: 04/14/2023]
Abstract
The fuzzy planar cell polarity protein (Fuz) is an effector component of the planar cell polarity (PCP) signaling. Together with other core and effector proteins, the PCP pathway controls polarized cell movements. Fuz was also reported as a negative regulator of cell survival. In this study, we performed a pan-cancer survey to demonstrate the role of Fuz in multiple types of cancer. In head-neck squamous cell carcinoma and lung adenocarcinoma tumor samples, a reduction of Fuz transcript expression was detected. This coincides with the poor overall survival probabilities of these patients. We further showed that Fuz promoter hypermethylation contributes to its transcriptional downregulation. Meanwhile, we also identified a relatively higher mutation frequency at the 404th arginine amino acid residue in the coding sequence of Fuz locus, and further demonstrated that mutant Fuz proteins perturb the pro-apoptotic function of Fuz. In summary, our study unveiled an intriguing relationship between Fuz dysregulation and cancer prognosis, and further provides mechanistic insights of Fuz's involvement in carcinogenesis.
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Affiliation(s)
- Zhefan Stephen Chen
- Nexus of Rare Neurodegenerative Diseases, School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
- School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Xiao Lin
- School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Ting-Fung Chan
- School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
- Gerald Choa Neuroscience Centre, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Ho Yin Edwin Chan
- Nexus of Rare Neurodegenerative Diseases, School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
- School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
- Gerald Choa Neuroscience Centre, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
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16
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Bonatto Paese CL, Brooks EC, Aarnio-Peterson M, Brugmann SA. Ciliopathic micrognathia is caused by aberrant skeletal differentiation and remodeling. Development 2021; 148:148/4/dev194175. [PMID: 33589509 DOI: 10.1242/dev.194175] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 01/13/2021] [Indexed: 12/16/2022]
Abstract
Ciliopathies represent a growing class of diseases caused by defects in microtubule-based organelles called primary cilia. Approximately 30% of ciliopathies are characterized by craniofacial phenotypes such as craniosynostosis, cleft lip/palate and micrognathia. Patients with ciliopathic micrognathia experience a particular set of difficulties, including impaired feeding and breathing, and have extremely limited treatment options. To understand the cellular and molecular basis for ciliopathic micrognathia, we used the talpid2 (ta2 ), a bona fide avian model for the human ciliopathy oral-facial-digital syndrome subtype 14. Histological analyses revealed that the onset of ciliopathic micrognathia in ta2 embryos occurred at the earliest stages of mandibular development. Neural crest-derived skeletal progenitor cells were particularly sensitive to a ciliopathic insult, undergoing unchecked passage through the cell cycle and subsequent increased proliferation. Furthermore, whereas neural crest-derived skeletal differentiation was initiated, osteoblast maturation failed to progress to completion. Additional molecular analyses revealed that an imbalance in the ratio of bone deposition and resorption also contributed to ciliopathic micrognathia in ta2 embryos. Thus, our results suggest that ciliopathic micrognathia is a consequence of multiple aberrant cellular processes necessary for skeletal development, and provide potential avenues for future therapeutic treatments.
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Affiliation(s)
- Christian Louis Bonatto Paese
- Division of Developmental Biology, Department of Pediatrics Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA.,Division of Plastic Surgery, Department of Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Evan C Brooks
- Division of Developmental Biology, Department of Pediatrics Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA.,Division of Plastic Surgery, Department of Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Megan Aarnio-Peterson
- Division of Developmental Biology, Department of Pediatrics Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA.,Division of Plastic Surgery, Department of Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Samantha A Brugmann
- Division of Developmental Biology, Department of Pediatrics Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA .,Division of Plastic Surgery, Department of Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA.,Shriners Children's Hospital, Cincinnati, OH 45229, USA
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17
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Svandova E, Anthwal N, Tucker AS, Matalova E. Diverse Fate of an Enigmatic Structure: 200 Years of Meckel's Cartilage. Front Cell Dev Biol 2020; 8:821. [PMID: 32984323 PMCID: PMC7484903 DOI: 10.3389/fcell.2020.00821] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 08/03/2020] [Indexed: 12/16/2022] Open
Abstract
Meckel's cartilage was first described by the German anatomist Johann Friedrich Meckel the Younger in 1820 from his analysis of human embryos. Two hundred years after its discovery this paper follows the development and largely transient nature of the mammalian Meckel's cartilage, and its role in jaw development. Meckel's cartilage acts as a jaw support during early development, and a template for the later forming jaw bones. In mammals, its anterior domain links the two arms of the dentary together at the symphysis while the posterior domain ossifies to form two of the three ear ossicles of the middle ear. In between, Meckel's cartilage transforms to a ligament or disappears, subsumed by the growing dentary bone. Several human syndromes have been linked, directly or indirectly, to abnormal Meckel's cartilage formation. Herein, the evolution, development and fate of the cartilage and its impact on jaw development is mapped. The review focuses on developmental and cellular processes that shed light on the mechanisms behind the different fates of this cartilage, examining the control of Meckel's cartilage patterning, initiation and maturation. Importantly, human disorders and mouse models with disrupted Meckel's cartilage development are highlighted, in order to understand how changes in this cartilage impact on later development of the dentary and the craniofacial complex as a whole. Finally, the relative roles of tissue interactions, apoptosis, autophagy, macrophages and clast cells in the removal process are discussed. Meckel's cartilage is a unique and enigmatic structure, the development and function of which is starting to be understood but many interesting questions still remain.
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Affiliation(s)
- Eva Svandova
- Institute of Animal Physiology and Genetics, Academy of Sciences, Brno, Czechia
| | - Neal Anthwal
- Centre for Craniofacial and Regenerative Biology, King’s College London, Guy’s Hospital, London, United Kingdom
| | - Abigail S. Tucker
- Centre for Craniofacial and Regenerative Biology, King’s College London, Guy’s Hospital, London, United Kingdom
| | - Eva Matalova
- Institute of Animal Physiology and Genetics, Academy of Sciences, Brno, Czechia
- Department of Physiology, University of Veterinary and Pharmaceutical Sciences, Brno, Czechia
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18
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Eliason S, Sharp T, Sweat M, Sweat YY, Amendt BA. Ectodermal Organ Development Is Regulated by a microRNA-26b-Lef-1-Wnt Signaling Axis. Front Physiol 2020; 11:780. [PMID: 32760291 PMCID: PMC7372039 DOI: 10.3389/fphys.2020.00780] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 06/15/2020] [Indexed: 12/25/2022] Open
Abstract
The developmental role of Lef-1 in ectodermal organs has been characterized using Lef-1 murine knockout models. We generated a Lef-1 conditional over-expression (COEL) mouse to determine the role of Lef-1 expression in epithelial structures at later stages of development after endogenous expression switches to the mesenchyme. Lef-1 over expression (OE) in the oral epithelium creates a new dental epithelial stem cell niche that significantly increases incisor growth. These data indicate that Lef-1 expression is switched off in the dental epithelial at early stages to maintain the stem cell niche and regulate incisor growth. Bioinformatics analyses indicated that miR-26b expression increased coinciding with decreased Lef-1 expression in the dental epithelium. We generated a murine model over-expressing miR-26b that targets endogenous Lef-1 expression and Lef-1-related developmental mechanisms. miR-26b OE mice have ectodermal organ defects including a lack of incisors, molars, and hair similar to the Lef-1 null mice. miR-26b OE rescues the Lef-1 OE phenotype demonstrating a critical genetic and developmental role for miR-26b in the temporal and spatial expression of Lef-1 in epithelial tissues. Lef-1 expression regulates Wnt signaling and Wnt target genes as well as cell proliferation mechanisms, while miR-26b OE reduced the levels of Wnt target gene expression. The extra stem cell compartment in the COEL mice expressed Lef-1 suggesting that Lef-1 is a stem cell factor, which was absent in the miR-26b OE/COEL rescue mice. This is the first demonstration of a microRNA OE mouse model that has ectodermal organ defects. These findings demonstrate that the levels of Lef-1 are critical for development and establish a role for miR-26b in the regulation of ectodermal organ development through the control of Lef-1 expression and an endogenous stem cell niche.
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Affiliation(s)
- Steve Eliason
- Department of Anatomy and Cell Biology, The University of Iowa, Iowa City, IA, United States.,Craniofacial Anomalies Research Center, The University of Iowa, Iowa City, IA, United States
| | - Thad Sharp
- Department of Anatomy and Cell Biology, The University of Iowa, Iowa City, IA, United States.,Craniofacial Anomalies Research Center, The University of Iowa, Iowa City, IA, United States
| | - Mason Sweat
- Department of Anatomy and Cell Biology, The University of Iowa, Iowa City, IA, United States.,Craniofacial Anomalies Research Center, The University of Iowa, Iowa City, IA, United States
| | - Yan Y Sweat
- Department of Anatomy and Cell Biology, The University of Iowa, Iowa City, IA, United States.,Craniofacial Anomalies Research Center, The University of Iowa, Iowa City, IA, United States
| | - Brad A Amendt
- Department of Anatomy and Cell Biology, The University of Iowa, Iowa City, IA, United States.,Craniofacial Anomalies Research Center, The University of Iowa, Iowa City, IA, United States.,Iowa Institute for Oral Health Research, The University of Iowa, Iowa City, IA, United States
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19
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Rosenfeld CS, Hekman JP, Johnson JL, Lyu Z, Ortega MT, Joshi T, Mao J, Vladimirova AV, Gulevich RG, Kharlamova AV, Acland GM, Hecht EE, Wang X, Clark AG, Trut LN, Behura SK, Kukekova AV. Hypothalamic transcriptome of tame and aggressive silver foxes (Vulpes vulpes) identifies gene expression differences shared across brain regions. Genes Brain Behav 2019; 19:e12614. [PMID: 31605445 DOI: 10.1111/gbb.12614] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 10/02/2019] [Accepted: 10/03/2019] [Indexed: 12/15/2022]
Abstract
The underlying neurological events accompanying dog domestication remain elusive. To reconstruct the domestication process in an experimental setting, silver foxes (Vulpes vulpes) have been deliberately bred for tame vs aggressive behaviors for more than 50 generations at the Institute for Cytology and Genetics in Novosibirsk, Russia. The hypothalamus is an essential part of the hypothalamic-pituitary-adrenal axis and regulates the fight-or-flight response, and thus, we hypothesized that selective breeding for tameness/aggressiveness has shaped the hypothalamic transcriptomic profile. RNA-seq analysis identified 70 differentially expressed genes (DEGs). Seven of these genes, DKKL1, FBLN7, NPL, PRIMPOL, PTGRN, SHCBP1L and SKIV2L, showed the same direction expression differences in the hypothalamus, basal forebrain and prefrontal cortex. The genes differentially expressed across the three tissues are involved in cell division, differentiation, adhesion and carbohydrate processing, suggesting an association of these processes with selective breeding. Additionally, 159 transcripts from the hypothalamus demonstrated differences in the abundance of alternative spliced forms between the tame and aggressive foxes. Weighted gene coexpression network analyses also suggested that gene modules in hypothalamus were significantly associated with tame vs aggressive behavior. Pathways associated with these modules include signal transduction, interleukin signaling, cytokine-cytokine receptor interaction and peptide ligand-binding receptors (eg, G-protein coupled receptor [GPCR] ligand binding). Current studies show the selection for tameness vs aggressiveness in foxes is associated with unique hypothalamic gene profiles partly shared with other brain regions and highlight DEGs involved in biological processes such as development, differentiation and immunological responses. The role of these processes in fox and dog domestication remains to be determined.
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Affiliation(s)
- Cheryl S Rosenfeld
- Bond Life Sciences Center, University of Missouri, Columbia, Missouri.,Biomedical Sciences, University of Missouri, Columbia, Missouri.,Thompson Center for Autism and Neurobehavioral Disorders, University of Missouri, Columbia, Missouri.,MU Informatics Institute, University of Missouri, Columbia, Missouri
| | - Jessica P Hekman
- Department of Animal Sciences, College of Agricultural, Consumer, and Environmental Sciences, University of Illinois, Urbana, Illinois.,The Broad Institute of MIT and Harvard, Cambridge, Massachusetts
| | - Jennifer L Johnson
- Department of Animal Sciences, College of Agricultural, Consumer, and Environmental Sciences, University of Illinois, Urbana, Illinois
| | - Zhen Lyu
- Department of Computer Science, University of Missouri, Columbia, Missouri
| | - Madison T Ortega
- Bond Life Sciences Center, University of Missouri, Columbia, Missouri.,Biomedical Sciences, University of Missouri, Columbia, Missouri
| | - Trupti Joshi
- Bond Life Sciences Center, University of Missouri, Columbia, Missouri.,MU Informatics Institute, University of Missouri, Columbia, Missouri.,Department of Computer Science, University of Missouri, Columbia, Missouri.,Department of Health Management and Informatics, University of Missouri, Columbia, Missouri
| | - Jiude Mao
- Bond Life Sciences Center, University of Missouri, Columbia, Missouri.,Biomedical Sciences, University of Missouri, Columbia, Missouri
| | - Anastasiya V Vladimirova
- The Laboratory of Evolutionary Genetics, Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Rimma G Gulevich
- The Laboratory of Evolutionary Genetics, Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Anastasiya V Kharlamova
- The Laboratory of Evolutionary Genetics, Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Gregory M Acland
- Baker Institute for Animal Health, Cornell University, College of Veterinary Medicine, Ithaca, New York
| | - Erin E Hecht
- Department of Human Evolutionary Biology, Harvard University, Cambridge, Massachusetts
| | - Xu Wang
- Department of Pathobiology, Auburn University, College of Veterinary Medicine, Auburn, Alabama
| | - Andrew G Clark
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York
| | - Lyudmila N Trut
- The Laboratory of Evolutionary Genetics, Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Susanta K Behura
- MU Informatics Institute, University of Missouri, Columbia, Missouri.,Division of Animal Sciences, University of Missouri, Columbia, Missouri
| | - Anna V Kukekova
- Department of Animal Sciences, College of Agricultural, Consumer, and Environmental Sciences, University of Illinois, Urbana, Illinois
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20
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Kitamura A, Kawasaki M, Kawasaki K, Meguro F, Yamada A, Nagai T, Kodama Y, Trakanant S, Sharpe PT, Maeda T, Takagi R, Ohazama A. Ift88 is involved in mandibular development. J Anat 2019; 236:317-324. [PMID: 31657471 DOI: 10.1111/joa.13096] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/04/2019] [Indexed: 12/16/2022] Open
Abstract
The mandible is a crucial organ in both clinical and biological fields due to the high frequency of congenital anomalies and the significant morphological changes during evolution. Primary cilia play a critical role in many biological processes, including the determination of left/right axis patterning, the regulation of signaling pathways, and the formation of bone and cartilage. Perturbations in the function of primary cilia are known to cause a wide spectrum of human diseases: the ciliopathies. Craniofacial dysmorphologies, including mandibular deformity, are often seen in patients with ciliopathies. Mandibular development is characterized by chondrogenesis and osteogenesis; however, the role of primary cilia in mandibular development is not fully understood. To address this question, we generated mice with mesenchymal deletions of the ciliary protein, Ift88 (Ift88fl/fl ;Wnt1Cre). Ift88fl/fl ;Wnt1Cre mice showed ectopic mandibular bone formation, whereas Ift88 mutant mandible was slightly shortened. Meckel's cartilage was modestly expanded in Ift88fl/fl ;Wnt1Cre mice. The downregulation of Hh signaling was found in most of the mesenchyme of Ift88 mutant mandible. However, mice with a mesenchymal deletion of an essential molecule for Hh signaling activity, Smo (Smofl/fl ;Wnt1Cre), showed only ectopic mandibular formation, whereas Smo mutant mandible was significantly shortened. Ift88 is thus involved in chondrogenesis and osteogenesis during mandibular development, partially through regulating Sonic hedgehog (Shh) signaling.
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Affiliation(s)
- Atsushi Kitamura
- Division of Oral Anatomy, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Division of Oral and Maxillofacial Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Maiko Kawasaki
- Division of Oral Anatomy, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Centre for Craniofacial Development and Regeneration, Dental Institute, Guy's Hospital, King's College London, London, UK
| | - Katsushige Kawasaki
- Division of Oral Anatomy, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Centre for Craniofacial Development and Regeneration, Dental Institute, Guy's Hospital, King's College London, London, UK.,Research Center for Advanced Oral Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Fumiya Meguro
- Division of Oral Anatomy, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Akane Yamada
- Division of Oral Anatomy, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Division of Oral and Maxillofacial Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Takahiro Nagai
- Division of Oral Anatomy, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Division of Oral and Maxillofacial Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yasumitsu Kodama
- Division of Oral and Maxillofacial Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Supaluk Trakanant
- Division of Oral Anatomy, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Division of Orthodontics, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Paul T Sharpe
- Centre for Craniofacial Development and Regeneration, Dental Institute, Guy's Hospital, King's College London, London, UK
| | - Takeyasu Maeda
- Division of Oral Anatomy, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Research Center for Advanced Oral Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Faculty of Dental Medicine, University of Airlangga, Surabaya, Indonesia
| | - Ritsuo Takagi
- Division of Oral and Maxillofacial Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Atsushi Ohazama
- Division of Oral Anatomy, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Centre for Craniofacial Development and Regeneration, Dental Institute, Guy's Hospital, King's College London, London, UK
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21
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Manocha S, Farokhnia N, Khosropanah S, Bertol JW, Santiago J, Fakhouri WD. Systematic review of hormonal and genetic factors involved in the nonsyndromic disorders of the lower jaw. Dev Dyn 2019; 248:162-172. [PMID: 30576023 DOI: 10.1002/dvdy.8] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 11/30/2018] [Accepted: 12/14/2018] [Indexed: 12/14/2022] Open
Abstract
Mandibular disorders are among the most common birth defects in humans, yet the etiological factors are largely unknown. Most of the neonates affected by mandibular abnormalities have a sequence of secondary anomalies, including airway obstruction and feeding problems, that reduce the quality of life. In the event of lacking corrective surgeries, patients with mandibular congenital disorders suffer from additional lifelong problems such as sleep apnea and temporomandibular disorders, among others. The goal of this systematic review is to gather evidence on hormonal and genetic factors that are involved in signaling pathways and interactions that are potentially associated with the nonsyndromic mandibular disorders. We found that members of FGF and BMP pathways, including FGF8/10, FGFR2/3, BMP2/4/7, BMPR1A, ACVR1, and ACVR2A/B, have a prominent number of gene-gene interactions among all identified genes in this review. Gene ontology of the 154 genes showed that the functional gene sets are involved in all aspects of cellular processes and organogenesis. Some of the genes identified by the genome-wide association studies of common mandibular disorders are involved in skeletal formation and growth retardation based on animal models, suggesting a potential direct role as genetic risk factors in the common complex jaw disorders. Developmental Dynamics 248:162-172, 2019. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Srishti Manocha
- Center for Craniofacial Research, Department of Diagnostic and Biomedical Sciences, School of Dentistry, University of Texas Health Science Center at Houston, Houston, Texas
| | - Nadia Farokhnia
- Center for Craniofacial Research, Department of Diagnostic and Biomedical Sciences, School of Dentistry, University of Texas Health Science Center at Houston, Houston, Texas
| | - Sepideh Khosropanah
- Ostrow School of Dentistry, University of Southern California, California, Los Angeles
| | - Jessica W Bertol
- Center for Craniofacial Research, Department of Diagnostic and Biomedical Sciences, School of Dentistry, University of Texas Health Science Center at Houston, Houston, Texas
| | - Joel Santiago
- Pró-Reitoria de Pesquisa e Pós-graduação (PRPPG), Universidade do Sagrado Coração, Jardim Brasil, Bauru, Sao Paulo, Brazil
| | - Walid D Fakhouri
- Center for Craniofacial Research, Department of Diagnostic and Biomedical Sciences, School of Dentistry, University of Texas Health Science Center at Houston, Houston, Texas.,Department of Pediatrics, McGovern Medical School, University of Texas Health Science Center, Houston, Texas
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22
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Sun Z, da Fontoura CSG, Moreno M, Holton NE, Sweat M, Sweat Y, Lee MK, Arbon J, Bidlack FB, Thedens DR, Nopoulos P, Cao H, Eliason S, Weinberg SM, Martin JF, Moreno-Uribe L, Amendt BA. FoxO6 regulates Hippo signaling and growth of the craniofacial complex. PLoS Genet 2018; 14:e1007675. [PMID: 30286078 PMCID: PMC6197693 DOI: 10.1371/journal.pgen.1007675] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 10/22/2018] [Accepted: 08/31/2018] [Indexed: 12/17/2022] Open
Abstract
The mechanisms that regulate post-natal growth of the craniofacial complex and that ultimately determine the size and shape of our faces are not well understood. Hippo signaling is a general mechanism to control tissue growth and organ size, and although it is known that Hippo signaling functions in neural crest specification and patterning during embryogenesis and before birth, its specific role in postnatal craniofacial growth remains elusive. We have identified the transcription factor FoxO6 as an activator of Hippo signaling regulating neonatal growth of the face. During late stages of mouse development, FoxO6 is expressed specifically in craniofacial tissues and FoxO6-/- mice undergo expansion of the face, frontal cortex, olfactory component and skull. Enlargement of the mandible and maxilla and lengthening of the incisors in FoxO6-/- mice are associated with increases in cell proliferation. In vitro and in vivo studies demonstrated that FoxO6 activates Lats1 expression, thereby increasing Yap phosphorylation and activation of Hippo signaling. FoxO6-/- mice have significantly reduced Hippo Signaling caused by a decrease in Lats1 expression and decreases in Shh and Runx2 expression, suggesting that Shh and Runx2 are also linked to Hippo signaling. In vitro, FoxO6 activates Hippo reporter constructs and regulates cell proliferation. Furthermore PITX2, a regulator of Hippo signaling is associated with Axenfeld-Rieger Syndrome causing a flattened midface and we show that PITX2 activates FoxO6 expression. Craniofacial specific expression of FoxO6 postnatally regulates Hippo signaling and cell proliferation. Together, these results identify a FoxO6-Hippo regulatory pathway that controls skull growth, odontogenesis and face morphology.
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Affiliation(s)
- Zhao Sun
- Department of Anatomy and Cell Biology, and the Craniofacial Anomalies Research Center, Carver College of Medicine, The University of Iowa, Iowa City, IA, United States of America
| | - Clarissa S. G. da Fontoura
- Iowa Institute for Oral Health Research, College of Dentistry, The University of Iowa, Iowa City, IA, United States of America
| | - Myriam Moreno
- Department of Anatomy and Cell Biology, and the Craniofacial Anomalies Research Center, Carver College of Medicine, The University of Iowa, Iowa City, IA, United States of America
| | - Nathan E. Holton
- Department of Orthodontics, College of Dentistry, The University of Iowa, Iowa City, IA, United States of America
| | - Mason Sweat
- Department of Anatomy and Cell Biology, and the Craniofacial Anomalies Research Center, Carver College of Medicine, The University of Iowa, Iowa City, IA, United States of America
| | - Yan Sweat
- Department of Anatomy and Cell Biology, and the Craniofacial Anomalies Research Center, Carver College of Medicine, The University of Iowa, Iowa City, IA, United States of America
| | - Myoung Keun Lee
- Department of Oral Biology, School of Dental Medicine, University of Pittsburgh, Pittsburgh PA, United States of America
| | - Jed Arbon
- Private practice, Cary, North Carolina United States of America
| | | | - Daniel R. Thedens
- Department of Psychiatry, Carver College of Medicine, The University of Iowa, Iowa City, IA, United States of America
| | - Peggy Nopoulos
- Department of Psychiatry, Carver College of Medicine, The University of Iowa, Iowa City, IA, United States of America
| | - Huojun Cao
- Iowa Institute for Oral Health Research, College of Dentistry, The University of Iowa, Iowa City, IA, United States of America
| | - Steven Eliason
- Department of Anatomy and Cell Biology, and the Craniofacial Anomalies Research Center, Carver College of Medicine, The University of Iowa, Iowa City, IA, United States of America
| | - Seth M. Weinberg
- Department of Oral Biology, School of Dental Medicine, University of Pittsburgh, Pittsburgh PA, United States of America
| | - James F. Martin
- Department of Physiology, Baylor College of Medicine, Houston, TX, United States of America
| | - Lina Moreno-Uribe
- Iowa Institute for Oral Health Research, College of Dentistry, The University of Iowa, Iowa City, IA, United States of America
- Department of Orthodontics, College of Dentistry, The University of Iowa, Iowa City, IA, United States of America
| | - Brad A. Amendt
- Department of Anatomy and Cell Biology, and the Craniofacial Anomalies Research Center, Carver College of Medicine, The University of Iowa, Iowa City, IA, United States of America
- Iowa Institute for Oral Health Research, College of Dentistry, The University of Iowa, Iowa City, IA, United States of America
- Department of Orthodontics, College of Dentistry, The University of Iowa, Iowa City, IA, United States of America
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23
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Chen ZS, Li L, Peng S, Chen FM, Zhang Q, An Y, Lin X, Li W, Koon AC, Chan TF, Lau KF, Ngo JCK, Wong WT, Kwan KM, Chan HYE. Planar cell polarity gene Fuz triggers apoptosis in neurodegenerative disease models. EMBO Rep 2018; 19:embr.201745409. [PMID: 30026307 DOI: 10.15252/embr.201745409] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 06/15/2018] [Accepted: 06/22/2018] [Indexed: 01/04/2023] Open
Abstract
Planar cell polarity (PCP) describes a cell-cell communication process through which individual cells coordinate and align within the plane of a tissue. In this study, we show that overexpression of Fuz, a PCP gene, triggers neuronal apoptosis via the dishevelled/Rac1 GTPase/MEKK1/JNK/caspase signalling axis. Consistent with this finding, endogenous Fuz expression is upregulated in models of polyglutamine (polyQ) diseases and in fibroblasts from spinocerebellar ataxia type 3 (SCA3) patients. The disruption of this upregulation mitigates polyQ-induced neurodegeneration in Drosophila We show that the transcriptional regulator Yin Yang 1 (YY1) associates with the Fuz promoter. Overexpression of YY1 promotes the hypermethylation of Fuz promoter, causing transcriptional repression of Fuz Remarkably, YY1 protein is recruited to ATXN3-Q84 aggregates, which reduces the level of functional, soluble YY1, resulting in Fuz transcriptional derepression and induction of neuronal apoptosis. Furthermore, Fuz transcript level is elevated in amyloid beta-peptide, Tau and α-synuclein models, implicating its potential involvement in other neurodegenerative diseases, such as Alzheimer's and Parkinson's diseases. Taken together, this study unveils a generic Fuz-mediated apoptotic cell death pathway in neurodegenerative disorders.
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Affiliation(s)
- Zhefan Stephen Chen
- Laboratory of Drosophila Research, School of Life Sciences Faculty of Science The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China.,Biochemistry Program, School of Life Sciences Faculty of Science The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Li Li
- Laboratory of Drosophila Research, School of Life Sciences Faculty of Science The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China.,Biochemistry Program, School of Life Sciences Faculty of Science The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Shaohong Peng
- Laboratory of Drosophila Research, School of Life Sciences Faculty of Science The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China.,Biochemistry Program, School of Life Sciences Faculty of Science The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Francis M Chen
- Cell and Molecular Biology Program, School of Life Sciences Faculty of Science The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Qian Zhang
- Laboratory of Drosophila Research, School of Life Sciences Faculty of Science The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China.,Biochemistry Program, School of Life Sciences Faculty of Science The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Ying An
- Laboratory of Drosophila Research, School of Life Sciences Faculty of Science The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China.,Biochemistry Program, School of Life Sciences Faculty of Science The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Xiao Lin
- Biochemistry Program, School of Life Sciences Faculty of Science The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Wen Li
- Biochemistry Program, School of Life Sciences Faculty of Science The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Alex Chun Koon
- Laboratory of Drosophila Research, School of Life Sciences Faculty of Science The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China.,Biochemistry Program, School of Life Sciences Faculty of Science The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Ting-Fung Chan
- Biochemistry Program, School of Life Sciences Faculty of Science The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China.,Cell and Molecular Biology Program, School of Life Sciences Faculty of Science The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China.,Molecular Biotechnology Program, School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China.,Gerald Choa Neuroscience Centre, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Kwok-Fai Lau
- Biochemistry Program, School of Life Sciences Faculty of Science The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China.,Cell and Molecular Biology Program, School of Life Sciences Faculty of Science The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China.,Molecular Biotechnology Program, School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Jacky Chi Ki Ngo
- Biochemistry Program, School of Life Sciences Faculty of Science The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China.,Cell and Molecular Biology Program, School of Life Sciences Faculty of Science The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Wing Tak Wong
- Cell and Molecular Biology Program, School of Life Sciences Faculty of Science The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Kin Ming Kwan
- Cell and Molecular Biology Program, School of Life Sciences Faculty of Science The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China.,Partner State Key Laboratory of Agrobiotechnology (CUHK), The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China.,Centre for Cell and Developmental Biology, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Ho Yin Edwin Chan
- Laboratory of Drosophila Research, School of Life Sciences Faculty of Science The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China .,Biochemistry Program, School of Life Sciences Faculty of Science The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China.,Cell and Molecular Biology Program, School of Life Sciences Faculty of Science The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China.,Molecular Biotechnology Program, School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China.,Gerald Choa Neuroscience Centre, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
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24
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Logjes RJH, Breugem CC, Van Haaften G, Paes EC, Sperber GH, van den Boogaard MJH, Farlie PG. The ontogeny of Robin sequence. Am J Med Genet A 2018; 176:1349-1368. [PMID: 29696787 DOI: 10.1002/ajmg.a.38718] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 12/17/2017] [Accepted: 03/23/2018] [Indexed: 02/06/2023]
Abstract
The triad of micrognathia, glossoptosis, and concomitant airway obstruction defined as "Robin sequence" (RS) is caused by oropharyngeal developmental events constrained by a reduced stomadeal space. This sequence of abnormal embryonic development also results in an anatomical configuration that might predispose the fetus to a cleft palate. RS is heterogeneous and many different etiologies have been described including syndromic, RS-plus, and isolated forms. For an optimal diagnosis, subsequent treatment and prognosis, a thorough understanding of the embryology and pathogenesis is necessary. This manuscript provides an update about our current understanding of the development of the mandible, tongue, and palate and possible mechanisms involved in the development of RS. Additionally, we provide the reader with an up-to-date summary of the different etiologies of this phenotype and link this to the embryologic, developmental, and genetic mechanisms.
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Affiliation(s)
- Robrecht J H Logjes
- Department of Plastic and Reconstructive Surgery, University Medical Center Utrecht, Wilhelmina Children's Hospital Utrecht, Utrecht, The Netherlands
| | - Corstiaan C Breugem
- Department of Plastic and Reconstructive Surgery, University Medical Center Utrecht, Wilhelmina Children's Hospital Utrecht, Utrecht, The Netherlands
| | - Gijs Van Haaften
- Department of Genetics, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Emma C Paes
- Department of Plastic and Reconstructive Surgery, University Medical Center Utrecht, Wilhelmina Children's Hospital Utrecht, Utrecht, The Netherlands
| | - Geoffrey H Sperber
- Faculty of Medicine and Dentistry, University of Alberta, Alberta, Canada
| | | | - Peter G Farlie
- Royal Children's Hospital, Murdoch Children's Research Institute, Parkville, Australia
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25
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Navarro N, Murat Maga A. Genetic mapping of molar size relations identifies inhibitory locus for third molars in mice. Heredity (Edinb) 2018; 121:1-11. [PMID: 29302051 DOI: 10.1038/s41437-017-0033-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 10/26/2017] [Accepted: 10/30/2017] [Indexed: 12/22/2022] Open
Abstract
Molar size in Mammals shows considerable disparity and exhibits variation similar to that predicted by the Inhibitory Cascade model. The importance of such developmental systems in favoring evolutionary trajectories is also underlined by the fact that this model can predict macroevolutionary patterns. Using backcross mice, we mapped QTL for molar sizes controlling for their sequential development. Genetic controls for upper and lower molars appear somewhat similar, and regions containing genes implied in dental defects drive this variation. We mapped three relationship QTLs (rQTL) modifying the control of the mesial molars on the focal third molar. These regions overlap Shh, Sostdc1, and Fst genes, which have pervasive roles in development and should be buffered against new variation. It has theoretically been shown that rQTL produces new variation channeled in the direction of adaptive changes. Our results provide evidence that evolutionary/disease patterns of tooth size variation could result from such a non-random generating process.
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Affiliation(s)
- Nicolas Navarro
- EPHE, PSL Research University Paris, F-21000, Dijon, France. .,Biogéosciences, UMR CNRS 6282, Université Bourgogne Franche-Comté, F-21000, Dijon, France.
| | - A Murat Maga
- Division of Craniofacial Medicine, Department of Pediatrics, University of Washington, Seattle, WA, 98105, USA.,Center for Developmental Biology and Regenerative Medicine, Seattle Children's Research Institute, Seattle, WA, 98101, USA
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26
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Agbu SO, Liang Y, Liu A, Anderson KV. The small GTPase RSG1 controls a final step in primary cilia initiation. J Cell Biol 2017; 217:413-427. [PMID: 29038301 PMCID: PMC5748968 DOI: 10.1083/jcb.201604048] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 08/18/2016] [Accepted: 09/21/2017] [Indexed: 12/11/2022] Open
Abstract
Primary cilia are essential for normal development and tissue homeostasis, but the mechanisms that remodel the centriole to promote cilia initiation are not well understood. Agbu et al. report that mouse RSG1, a small GTPase, regulates a late step in cilia initiation, downstream of TTBK2 and the CPLANE protein INTU. Primary cilia, which are essential for normal development and tissue homeostasis, are extensions of the mother centriole, but the mechanisms that remodel the centriole to promote cilia initiation are poorly understood. Here we show that mouse embryos that lack the small guanosine triphosphatase RSG1 die at embryonic day 12.5, with developmental abnormalities characteristic of decreased cilia-dependent Hedgehog signaling. Rsg1 mutant embryos have fewer primary cilia than wild-type embryos, but the cilia that form are of normal length and traffic Hedgehog pathway proteins within the cilium correctly. Rsg1 mother centrioles recruit proteins required for cilia initiation and dock onto ciliary vesicles, but axonemal microtubules fail to elongate normally. RSG1 localizes to the mother centriole in a process that depends on tau tubulin kinase 2 (TTBK2), the CPLANE complex protein Inturned (INTU), and its own GTPase activity. The data suggest a specific role for RSG1 in the final maturation of the mother centriole and ciliary vesicle that allows extension of the ciliary axoneme.
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Affiliation(s)
- Stephanie O Agbu
- Developmental Biology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY.,Biochemistry, Cell and Molecular Biology Program, Weill Graduate School of Medical Sciences of Cornell University, New York, NY
| | - Yinwen Liang
- Developmental Biology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Aimin Liu
- Department of Biology, Eberly College of Science, The Pennsylvania State University, University Park, PA
| | - Kathryn V Anderson
- Developmental Biology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY
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27
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Cela P, Hampl M, Shylo NA, Christopher KJ, Kavkova M, Landova M, Zikmund T, Weatherbee SD, Kaiser J, Buchtova M. Ciliopathy Protein Tmem107 Plays Multiple Roles in Craniofacial Development. J Dent Res 2017; 97:108-117. [PMID: 28954202 DOI: 10.1177/0022034517732538] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
A broad spectrum of human diseases called ciliopathies is caused by defective primary cilia morphology or signal transduction. The primary cilium is a solitary organelle that responds to mechanical and chemical stimuli from extracellular and intracellular environments. Transmembrane protein 107 (TMEM107) is localized in the primary cilium and is enriched at the transition zone where it acts to regulate protein content of the cilium. Mutations in TMEM107 were previously connected with oral-facial-digital syndrome, Meckel-Gruber syndrome, and Joubert syndrome exhibiting a range of ciliopathic defects. Here, we analyze a role of Tmem107 in craniofacial development with special focus on palate formation, using mouse embryos with a complete knockout of Tmem107. Tmem107-/- mice were affected by a broad spectrum of craniofacial defects, including shorter snout, expansion of the facial midline, cleft lip, extensive exencephaly, and microphthalmia or anophthalmia. External abnormalities were accompanied by defects in skeletal structures, including ossification delay in several membranous bones and enlargement of the nasal septum or defects in vomeronasal cartilage. Alteration in palatal shelves growth resulted in clefting of the secondary palate. Palatal defects were caused by increased mesenchymal proliferation leading to early overgrowth of palatal shelves followed by defects in their horizontalization. Moreover, the expression of epithelial stemness marker SOX2 was altered in the palatal shelves of Tmem107-/- animals, and differences in mesenchymal SOX9 expression demonstrated the enhancement of neural crest migration. Detailed analysis of primary cilia revealed region-specific changes in ciliary morphology accompanied by alteration of acetylated tubulin and IFT88 expression. Moreover, Shh and Gli1 expression was increased in Tmem107-/- animals as shown by in situ hybridization. Thus, TMEM107 is essential for proper head development, and defective TMEM107 function leads to ciliary morphology disruptions in a region-specific manner, which may explain the complex mutant phenotype.
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Affiliation(s)
- P Cela
- 1 Institute of Animal Physiology and Genetics, CAS, Brno, Czech Republic.,2 Department of Physiology, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
| | - M Hampl
- 1 Institute of Animal Physiology and Genetics, CAS, Brno, Czech Republic.,3 Department of Experimental Biology, Faculty of Sciences, Masaryk University, Brno, Czech Republic
| | - N A Shylo
- 4 Department of Genetics, Yale University, School of Medicine, New Haven, CT, USA
| | - K J Christopher
- 4 Department of Genetics, Yale University, School of Medicine, New Haven, CT, USA
| | - M Kavkova
- 5 CEITEC-Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - M Landova
- 1 Institute of Animal Physiology and Genetics, CAS, Brno, Czech Republic.,3 Department of Experimental Biology, Faculty of Sciences, Masaryk University, Brno, Czech Republic
| | - T Zikmund
- 5 CEITEC-Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - S D Weatherbee
- 4 Department of Genetics, Yale University, School of Medicine, New Haven, CT, USA
| | - J Kaiser
- 5 CEITEC-Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - M Buchtova
- 1 Institute of Animal Physiology and Genetics, CAS, Brno, Czech Republic.,3 Department of Experimental Biology, Faculty of Sciences, Masaryk University, Brno, Czech Republic
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28
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Abstract
Primary cilium is a solitary organelle that emanates from the surface of most postmitotic mammalian cells and serves as a sensory organelle, transmitting the mechanical and chemical cues to the cell. Primary cilia are key coordinators of various signaling pathways during development and maintenance of tissue homeostasis. The emerging evidence implicates primary cilia function in tooth development. Primary cilia are located in the dental epithelium and mesenchyme at early stages of tooth development and later during cell differentiation and production of hard tissues. The cilia are present when interactions between both the epithelium and mesenchyme are required for normal morphogenesis. As the primary cilium coordinates several signaling pathways essential for odontogenesis, ciliary defects can interrupt the latter process. Genetic or experimental alterations of cilia function lead to various developmental defects, including supernumerary or missing teeth, enamel and dentin hypoplasia, or teeth crowding. Moreover, dental phenotypes are observed in ciliopathies, including Bardet-Biedl syndrome, Ellis-van Creveld syndrome, Weyers acrofacial dysostosis, cranioectodermal dysplasia, and oral-facial-digital syndrome, altogether demonstrating that primary cilia play a critical role in regulation of both the early odontogenesis and later differentiation of hard tissue-producing cells. Here, we summarize the current evidence for the localization of primary cilia in dental tissues and the impact of disrupted cilia signaling on tooth development in ciliopathies.
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Affiliation(s)
- M Hampl
- 1 Institute of Animal Physiology and Genetics, v.v.i., Czech Academy of Sciences, Brno, Czech Republic.,2 Department of Experimental Biology, Masaryk University, Brno, Czech Republic
| | - P Cela
- 1 Institute of Animal Physiology and Genetics, v.v.i., Czech Academy of Sciences, Brno, Czech Republic.,3 Department of Physiology, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
| | - H L Szabo-Rogers
- 4 Department of Oral Biology, School of Dental Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.,5 Center for Craniofacial Engineering, McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | | | - H Dosedelova
- 1 Institute of Animal Physiology and Genetics, v.v.i., Czech Academy of Sciences, Brno, Czech Republic
| | - P Krejci
- 6 Department of Biology, Faculty of Medicine, Masaryk University, Brno, Czech Republic.,7 International Clinical Research Center, St. Anne's University Hospital, Brno, Czech Republic
| | - M Buchtova
- 1 Institute of Animal Physiology and Genetics, v.v.i., Czech Academy of Sciences, Brno, Czech Republic.,2 Department of Experimental Biology, Masaryk University, Brno, Czech Republic
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Yang N, Leung ELH, Liu C, Li L, Eguether T, Jun Yao XJ, Jones EC, Norris DA, Liu A, Clark RA, Roop DR, Pazour GJ, Shroyer KR, Chen J. INTU is essential for oncogenic Hh signaling through regulating primary cilia formation in basal cell carcinoma. Oncogene 2017; 36:4997-5005. [PMID: 28459465 PMCID: PMC5578876 DOI: 10.1038/onc.2017.117] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Revised: 12/29/2016] [Accepted: 03/23/2017] [Indexed: 12/30/2022]
Abstract
Inturned (INTU), a cilia and planar polarity effector (CPLANE), performs prominent ciliogenic functions during morphogenesis, such as in the skin. INTU is expressed in adult tissues but its role in tissue maintenance is unknown. Here, we report that the expression of the INTU gene is aberrantly elevated in human basal cell carcinoma (BCC), coinciding with increased primary cilia formation and activated hedgehog (Hh) signaling. Disrupting Intu in an oncogenic mutant Smo (SmoM2)-driven BCC mouse model prevented the formation of BCC through suppressing primary cilia formation and Hh signaling, suggesting that Intu performs a permissive role during BCC formation. INTU is essential for IFT-A complex assembly during ciliogenesis. To further determine whether Intu is directly involved in the activation of Hh signaling downstream of ciliogenesis, we examined the Hh signaling pathway in mouse embryonic fibroblasts, which readily respond to Hh pathway activation. Depleting Intu blocked SAG-induced Hh pathway activation, whereas the expression of Gli2ΔN, a constitutively active Gli2, restored Hh pathway activation in Intu-deficient cells, suggesting that INTU functions upstream of Gli2 activation. In contrast, overexpressing Intu did not promote ciliogenesis or Hh signaling. Taken together, data obtained from this study suggest that INTU is indispensable during BCC tumorigenesis and that its aberrant upregulation is likely a prerequisite for primary cilia formation during Hh-dependent tumorigenesis.
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Affiliation(s)
- N Yang
- Department of Pathology, Stony Brook University, Stony Brook, NY, USA
| | - E L-H Leung
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - C Liu
- Department of Pathology, Stony Brook University, Stony Brook, NY, USA
| | - L Li
- Department of Dermatology, Peking Union Medical College Hospital, Beijing, China
| | - T Eguether
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA, USA
| | - X-J Jun Yao
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - E C Jones
- Department of Dermatology, Stony Brook University, Stony Brook, NY, USA
| | - D A Norris
- Charles C. Gates Center for Regenerative Medicine, University of Colorado Denver, Aurora, CO, USA
| | - A Liu
- Department of Biology, Eberly College of Science, Pennsylvania State University, University Park, PA, USA
| | - R A Clark
- Department of Dermatology, Stony Brook University, Stony Brook, NY, USA
| | - D R Roop
- Charles C. Gates Center for Regenerative Medicine, University of Colorado Denver, Aurora, CO, USA.,Department of Dermatology, University of Colorado Denver, Aurora, CO, USA
| | - G J Pazour
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA, USA
| | - K R Shroyer
- Department of Pathology, Stony Brook University, Stony Brook, NY, USA
| | - J Chen
- Department of Pathology, Stony Brook University, Stony Brook, NY, USA.,State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China.,Department of Dermatology, Stony Brook University, Stony Brook, NY, USA
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30
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Schock EN, Struve JN, Chang CF, Williams TJ, Snedeker J, Attia AC, Stottmann RW, Brugmann SA. A tissue-specific role for intraflagellar transport genes during craniofacial development. PLoS One 2017; 12:e0174206. [PMID: 28346501 PMCID: PMC5367710 DOI: 10.1371/journal.pone.0174206] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 03/06/2017] [Indexed: 01/13/2023] Open
Abstract
Primary cilia are nearly ubiquitous, cellular projections that function to transduce molecular signals during development. Loss of functional primary cilia has a particularly profound effect on the developing craniofacial complex, causing several anomalies including craniosynostosis, micrognathia, midfacial dysplasia, cleft lip/palate and oral/dental defects. Development of the craniofacial complex is an intricate process that requires interactions between several different tissues including neural crest cells, neuroectoderm and surface ectoderm. To understand the tissue-specific requirements for primary cilia during craniofacial development we conditionally deleted three separate intraflagellar transport genes, Kif3a, Ift88 and Ttc21b with three distinct drivers, Wnt1-Cre, Crect and AP2-Cre which drive recombination in neural crest, surface ectoderm alone, and neural crest, surface ectoderm and neuroectoderm, respectively. We found that tissue-specific conditional loss of ciliary genes with different functions produces profoundly different facial phenotypes. Furthermore, analysis of basic cellular behaviors in these mutants suggests that loss of primary cilia in a distinct tissue has unique effects on development of adjacent tissues. Together, these data suggest specific spatiotemporal roles for intraflagellar transport genes and the primary cilium during craniofacial development.
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Affiliation(s)
- Elizabeth N. Schock
- Division of Plastic Surgery, Department of Surgery, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Division of Developmental Biology, Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Jaime N. Struve
- Division of Plastic Surgery, Department of Surgery, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Division of Developmental Biology, Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Ching-Fang Chang
- Division of Plastic Surgery, Department of Surgery, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Division of Developmental Biology, Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Trevor J. Williams
- Department of Craniofacial Biology, University of Colorado School of Dental Medicine, Aurora, Colorado, United States of America
| | - John Snedeker
- Division of Human Genetics, Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Aria C. Attia
- Division of Human Genetics, Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Rolf W. Stottmann
- Division of Developmental Biology, Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Division of Human Genetics, Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Samantha A. Brugmann
- Division of Plastic Surgery, Department of Surgery, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Division of Developmental Biology, Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
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Adler PN, Wallingford JB. From Planar Cell Polarity to Ciliogenesis and Back: The Curious Tale of the PPE and CPLANE proteins. Trends Cell Biol 2017; 27:379-390. [PMID: 28153580 DOI: 10.1016/j.tcb.2016.12.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Revised: 11/28/2016] [Accepted: 12/23/2016] [Indexed: 12/29/2022]
Abstract
Why some genes are more popular than others remains an open question, but one example of this phenomenon involves the genes controlling planar cell polarity (PCP), the polarization of cells within a plane of a tissue. Indeed, the so-called 'core' PCP genes such as dishevelled, frizzled, and prickle have been extensively studied both in animal models and by human genetics. By contrast, other genes that influence PCP signaling have received far less attention. Among the latter are inturned, fuzzy, and fritz, but recent work should bring these once obscure regulators into the limelight. We provide here a brief history of planar polarity effector (PPE) and CPLANE (ciliogenesis and planar polarity effector) proteins, discuss recent advances in understanding their molecular mechanisms of action, and describe their roles in human disease.
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Affiliation(s)
- Paul N Adler
- Departments of Biology and Cell Biology, University of Virginia School of Medicine, Charlottesville, VA 22908, USA
| | - John B Wallingford
- Department of Molecular Biosciences, University of Texas at Austin, Austin, TX 78712, USA.
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Abstract
The tongue and mandible have common origins. They arise simultaneously from the mandibular arch and are coordinated in their development and growth, which is evident from several clinical conditions such as Pierre Robin sequence. Here, we review in detail the molecular networks controlling both mandible and tongue development. We also discuss their mechanical relationship and evolution as well as the potential for stem cell-based therapies for disorders affecting these organs.
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Affiliation(s)
- Carolina Parada
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, California, USA.
| | - Yang Chai
- Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, California, USA.
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Abstract
Cleft palate, including complete or incomplete cleft palates, soft palate clefts, and submucosal cleft palates, is the most frequent congenital craniofacial anomaly in humans. Multifactorial conditions, including genetic and environmental factors, induce the formation of cleft palates. The process of palatogenesis is temporospatially regulated by transcription factors, growth factors, extracellular matrix proteins, and membranous molecules; a single ablation of these molecules can result in a cleft palate in vivo. Studies on knockout mice were reviewed in order to identify genetic errors that lead to cleft palates. In this review, we systematically describe these mutant mice and discuss the molecular mechanisms of palatogenesis.
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Schock EN, Chang CF, Struve JN, Chang YT, Chang J, Delany ME, Brugmann SA. Using the avian mutant talpid2 as a disease model for understanding the oral-facial phenotypes of oral-facial-digital syndrome. Dis Model Mech 2015; 8:855-66. [PMID: 26044959 PMCID: PMC4527291 DOI: 10.1242/dmm.020222] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 05/28/2015] [Indexed: 12/22/2022] Open
Abstract
Oral-facial-digital syndrome (OFD) is a ciliopathy that is characterized by oral-facial abnormalities, including cleft lip and/or palate, broad nasal root, dental anomalies, micrognathia and glossal defects. In addition, these individuals have several other characteristic abnormalities that are typical of a ciliopathy, including polysyndactyly, polycystic kidneys and hypoplasia of the cerebellum. Recently, a subset of OFD cases in humans has been linked to mutations in the centriolar protein C2 Ca(2+)-dependent domain-containing 3 (C2CD3). Our previous work identified mutations in C2CD3 as the causal genetic lesion for the avian talpid(2) mutant. Based on this common genetic etiology, we re-examined the talpid(2) mutant biochemically and phenotypically for characteristics of OFD. We found that, as in OFD-affected individuals, protein-protein interactions between C2CD3 and oral-facial-digital syndrome 1 protein (OFD1) are reduced in talpid(2) cells. Furthermore, we found that all common phenotypes were conserved between OFD-affected individuals and avian talpid(2) mutants. In light of these findings, we utilized the talpid(2) model to examine the cellular basis for the oral-facial phenotypes present in OFD. Specifically, we examined the development and differentiation of cranial neural crest cells (CNCCs) when C2CD3-dependent ciliogenesis was impaired. Our studies suggest that although disruptions of C2CD3-dependent ciliogenesis do not affect CNCC specification or proliferation, CNCC migration and differentiation are disrupted. Loss of C2CD3-dependent ciliogenesis affects the dispersion and directional persistence of migratory CNCCs. Furthermore, loss of C2CD3-dependent ciliogenesis results in dysmorphic and enlarged CNCC-derived facial cartilages. Thus, these findings suggest that aberrant CNCC migration and differentiation could contribute to the pathology of oral-facial defects in OFD.
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Affiliation(s)
- Elizabeth N Schock
- Division of Plastic Surgery, Department of Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA Division of Developmental Biology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Ching-Fang Chang
- Division of Plastic Surgery, Department of Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA Division of Developmental Biology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Jaime N Struve
- Division of Plastic Surgery, Department of Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA Division of Developmental Biology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Ya-Ting Chang
- Division of Plastic Surgery, Department of Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA Division of Developmental Biology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Julie Chang
- University of Cincinnati, Cincinnati, OH 45229, USA
| | - Mary E Delany
- College of Agricultural and Environmental Sciences, Department of Animal Science, University of California Davis, Davis, CA 95616, USA
| | - Samantha A Brugmann
- Division of Plastic Surgery, Department of Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA Division of Developmental Biology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
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35
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Miyashita T. Fishing for jaws in early vertebrate evolution: a new hypothesis of mandibular confinement. Biol Rev Camb Philos Soc 2015; 91:611-57. [DOI: 10.1111/brv.12187] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Revised: 03/18/2015] [Accepted: 03/19/2015] [Indexed: 12/21/2022]
Affiliation(s)
- Tetsuto Miyashita
- Department of Biological Sciences; University of Alberta; Edmonton Alberta T6G 2E9 Canada
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36
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Price KE, Haddad Y, Fakhouri WD. Analysis of the Relationship Between Micrognathia and Cleft Palate: A Systematic Review. Cleft Palate Craniofac J 2015; 53:e34-44. [PMID: 25658963 DOI: 10.1597/14-238] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Objective To gather data from relevant experimental and observational studies to determine the relationship between micrognathia and cleft palate. The goal is to raise awareness and motivate clinicians to consider the cause and effect relationship when confronted with patients with cleft palate, even if there is no clearly noticeable mandibular abnormality. Design Several electronic databases were systematically examined to find articles for this review, using search terms including "cleft palate," "micrognathia," "tongue," and "airway obstruction." PubMed was the source of all the articles chosen to be included. Exclusion criteria included case reports, articles focused on treatment options, and articles only tangentially related to cleft palate and/or micrognathia. Results A total of 930 articles were screened for relevance, and 82 articles were chosen for further analysis. Evidence gathered in this review includes a variety of etiological factors that are causative or associated with both micrognathia and cleft palate. Observational studies relating the two abnormalities are also included. Much of the included literature recognizes a cause-and-effect relationship between micrognathia and cleft palate. Conclusion On the basis of the published data, we suggest that micrognathia does induce cleft palate in humans and animals. With knowledge of this causative relationship, clinicians should consider the importance of gathering cephalometric data on the mandibles and tongues of patients presenting with isolated cleft palate to determine whether they have micrognathia as well. With more data, patterns may emerge that could give insight into the complex etiology of nonsyndromic cleft palate.
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Sharp T, Wang J, Li X, Cao H, Gao S, Moreno M, Amendt BA. A pituitary homeobox 2 (Pitx2):microRNA-200a-3p:β-catenin pathway converts mesenchymal cells to amelogenin-expressing dental epithelial cells. J Biol Chem 2014; 289:27327-27341. [PMID: 25122764 PMCID: PMC4175363 DOI: 10.1074/jbc.m114.575654] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Revised: 08/12/2014] [Indexed: 12/21/2022] Open
Abstract
Pitx2, Wnt/β-catenin signaling, and microRNAs (miRs) play a critical role in the regulation of dental stem cells during embryonic development. In this report, we have identified a Pitx2:β-catenin regulatory pathway involved in epithelial cell differentiation and conversion of mesenchymal cells to amelogenin expressing epithelial cells via miR-200a. Pitx2 and β-catenin are expressed in the labial incisor cervical loop or epithelial stem cell niche, with decreased expression in the differentiating ameloblast cells of the mouse lower incisor. Bioinformatics analyses reveal that miR-200a-3p expression is activated in the pre-ameloblast cells to enhance epithelial cell differentiation. We demonstrate that Pitx2 activates miR-200a-3p expression and miR-200a-3p reciprocally represses Pitx2 and β-catenin expression. Pitx2 and β-catenin interact to synergistically activate gene expression during odontogenesis and miR-200a-3p attenuates their expression and directs differentiation. To understand how this mechanism controls cell differentiation and cell fate, oral epithelial and odontoblast mesenchymal cells were reprogrammed by a two-step induction method using Pitx2 and miR-200a-3p. Conversion to amelogenin expressing dental epithelial cells involved an up-regulation of the stem cell marker Sox2 and proliferation genes and decreased expression of mesenchymal markers. E-cadherin expression was increased as well as ameloblast specific factors. The combination of Pitx2, a regulator of dental stem cells and miR-200a converts mesenchymal cells to a fully differentiated dental epithelial cell type. This pathway and reprogramming can be used to reprogram mesenchymal or oral epithelial cells to dental epithelial (ameloblast) cells, which can be used in tissue repair and regeneration studies.
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Affiliation(s)
- Thad Sharp
- Department of Anatomy and Cell Biology, Carver College of Medicine, University of Iowa, Iowa City, Iowa 52242
| | - Jianbo Wang
- Institute of Biosciences and Technology, Texas A&M Health Science Center, Houston, Texas 77030, and
| | - Xiao Li
- Department of Anatomy and Cell Biology, Carver College of Medicine, University of Iowa, Iowa City, Iowa 52242
| | - Huojun Cao
- Institute of Biosciences and Technology, Texas A&M Health Science Center, Houston, Texas 77030, and
| | - Shan Gao
- Institute of Biosciences and Technology, Texas A&M Health Science Center, Houston, Texas 77030, and
| | - Myriam Moreno
- Department of Anatomy and Cell Biology, Carver College of Medicine, University of Iowa, Iowa City, Iowa 52242
| | - Brad A Amendt
- Department of Anatomy and Cell Biology, Carver College of Medicine, University of Iowa, Iowa City, Iowa 52242,; Craniofacial Anomalies Research Center, Carver College of Medicine, University of Iowa, Iowa City, Iowa 52242.
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Wang Y, Yan J, Lee H, Lu Q, Adler PN. The proteins encoded by the Drosophila Planar Polarity Effector genes inturned, fuzzy and fritz interact physically and can re-pattern the accumulation of "upstream" Planar Cell Polarity proteins. Dev Biol 2014; 394:156-69. [PMID: 25072625 DOI: 10.1016/j.ydbio.2014.07.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Revised: 07/15/2014] [Accepted: 07/18/2014] [Indexed: 12/12/2022]
Abstract
The frizzled/starry night pathway regulates planar cell polarity in a wide variety of tissues in many types of animals. It was discovered and has been most intensively studied in the Drosophila wing where it controls the formation of the array of distally pointing hairs that cover the wing. The pathway does this by restricting the activation of the cytoskeleton to the distal edge of wing cells. This results in hairs initiating at the distal edge and growing in the distal direction. All of the proteins encoded by genes in the pathway accumulate asymmetrically in wing cells. The pathway is a hierarchy with the Planar Cell Polarity (PCP) genes (aka the core genes) functioning as a group upstream of the Planar Polarity Effector (PPE) genes which in turn function as a group upstream of multiple wing hairs. Upstream proteins, such as Frizzled accumulate on either the distal and/or proximal edges of wing cells. Downstream PPE proteins accumulate on the proximal edge under the instruction of the upstream proteins. A variety of types of data support this hierarchy, however, we have found that when over expressed the PPE proteins can alter both the subcellular location and level of accumulation of the upstream proteins. Thus, the epistatic relationship is context dependent. We further show that the PPE proteins interact physically and can modulate the accumulation of each other in wing cells. We also find that over expression of Frtz results in a marked delay in hair initiation suggesting that it has a separate role/activity in regulating the cytoskeleton that is not shared by other members of the group.
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Affiliation(s)
- Ying Wang
- Biology Department and Cell Biology Department, University of Virginia, Charlottesville, VA 22903, USA
| | - Jie Yan
- Biology Department and Cell Biology Department, University of Virginia, Charlottesville, VA 22903, USA
| | - Haeryun Lee
- Biology Department and Cell Biology Department, University of Virginia, Charlottesville, VA 22903, USA
| | - Qiuheng Lu
- Biology Department and Cell Biology Department, University of Virginia, Charlottesville, VA 22903, USA
| | - Paul N Adler
- Biology Department and Cell Biology Department, University of Virginia, Charlottesville, VA 22903, USA.
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Zhang Z, Kim K, Li X, Moreno M, Sharp T, Goodheart MJ, Safe S, Dupuy AJ, Amendt BA. MicroRNA-26b represses colon cancer cell proliferation by inhibiting lymphoid enhancer factor 1 expression. Mol Cancer Ther 2014; 13:1942-51. [PMID: 24785257 DOI: 10.1158/1535-7163.mct-13-1000] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
microRNAs (miR) can act as oncogenes and tumor suppressors and several miRs are associated with cancer development and progression through the modulation of multiple cellular processes. miR26b is downregulated in several cancers and tumors and miR26b directly targets the lymphoid enhancer factor 1 (Lef1)3'UTR and inhibits endogenous Lef1 expression. We report that miR26b expression is associated with human colon cancer through the regulation of LEF1 expression in colon cancer cells. Analyses of multiple colon cancer cell lines revealed an inverse correlation between miR26b and LEF1 expression. Normal human colon cells express low levels of LEF1 and high levels of miR26b; however, human colon cancer cells have decreased miR26b expression and increased LEF1 expression. We demonstrate that miR26b expression is a potent inhibitor of colon cancer cell proliferation and significantly decreases LEF1 expression. The LEF1-regulated genes cyclin D1 and c-Myc were indirectly repressed by miR26b and this was consistent with decreased proliferation. miR26b overexpression in SW480 colon cancer cells also inhibited tumor growth in nude mice and this was due to decreased tumor growth and not apoptosis. Analyses of human colon cancer databases also demonstrated a link between miR26b and LEF1 expression. c-Myc expression is associated with multiple cancers and we propose that miR26b may act as a potential therapeutic agent in reducing cancer cell proliferation through repressing LEF1 activation of c-Myc and cyclin D1 expression.
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Affiliation(s)
- Zichao Zhang
- Authors' Affiliations: Craniofacial Anomalies Research Center, and
| | - KyoungHyun Kim
- Department of Environmental Health, University of Cincinnati, Cincinnati, Ohio; and
| | - Xiao Li
- Authors' Affiliations: Craniofacial Anomalies Research Center, and
| | - Myriam Moreno
- Authors' Affiliations: Craniofacial Anomalies Research Center, and
| | - Thad Sharp
- Authors' Affiliations: Craniofacial Anomalies Research Center, and
| | | | | | - Adam J Dupuy
- Department of Anatomy and Cell Biology, University of Iowa, Iowa City, Iowa
| | - Brad A Amendt
- Authors' Affiliations: Craniofacial Anomalies Research Center, and
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Mishina Y, Snider TN. Neural crest cell signaling pathways critical to cranial bone development and pathology. Exp Cell Res. 2014;325:138-147. [PMID: 24509233 DOI: 10.1016/j.yexcr.2014.01.019] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Accepted: 01/17/2014] [Indexed: 01/08/2023]
Abstract
Neural crest cells appear early during embryogenesis and give rise to many structures in the mature adult. In particular, a specific population of neural crest cells migrates to and populates developing cranial tissues. The ensuing differentiation of these cells via individual complex and often intersecting signaling pathways is indispensible to growth and development of the craniofacial complex. Much research has been devoted to this area of development with particular emphasis on cell signaling events required for physiologic development. Understanding such mechanisms will allow researchers to investigate ways in which they can be exploited in order to treat a multitude of diseases affecting the craniofacial complex. Knowing how these multipotent cells are driven towards distinct fates could, in due course, allow patients to receive regenerative therapies for tissues lost to a variety of pathologies. In order to realize this goal, nucleotide sequencing advances allowing snapshots of entire genomes and exomes are being utilized to identify molecular entities associated with disease states. Once identified, these entities can be validated for biological significance with other methods. A crucial next step is the integration of knowledge gleaned from observations in disease states with normal physiology to generate an explanatory model for craniofacial development. This review seeks to provide a current view of the landscape on cell signaling and fate determination of the neural crest and to provide possible avenues of approach for future research.
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Jia M, Chen S, Zhang B, Liang H, Feng J, Zong Z. Effects of constitutive β-catenin activation on vertebral bone growth and remodeling at different postnatal stages in mice. PLoS One 2013; 8:e74093. [PMID: 24066100 DOI: 10.1371/journal.pone.0074093] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Accepted: 07/26/2013] [Indexed: 11/19/2022] Open
Abstract
Background and Objective The Wnt/β-catenin signaling pathway is essential for controlling bone mass; however, little is known about the variable effects of the constitutive activation of β-catenin (CA-β-catenin) on bone growth and remodeling at different postnatal stages. The goal of the present study was to observe the effects of CA-β-catenin on vertebral bone growth and remodeling in mice at different postnatal stages. In particular, special attention was paid to whether CA-β-catenin has detrimental effects on these processes. Methods Catnblox(ex 3) mice were crossed with mice expressing the TM-inducible Cre fusion protein, which could be activated at designated time points via injection of tamoxifen. β-catenin was stabilized by tamoxifen injection 3 days, and 2, 4, 5, and 7 months after birth, and the effects lasted for one month. Radiographic imaging, micro-computed tomography, immunohistochemistry, and safranin O and tartrate-resistant acid phosphatase staining were employed to observe the effects of CA-β-catenin on vertebral bone growth and remodeling. Results CA-β-catenin in both early (3 days after birth) and late stages (2, 4, 5, and 7 months after birth) increased bone formation and decreased bone resorption, which together increased vertebral bone volume. However, when β-catenin was stabilized in the early stage, vertebral linear growth was retarded, and the mice demonstrated shorter statures. In addition, the newly formed bone was mainly immature and located close to the growth plate. In contrast, when β-catenin was stabilized in the late stage, vertebral linear growth was unaffected, and the newly formed bone was mainly mature and evenly distributed throughout the vertebral body. Conclusions CA-β-catenin in both early and late stages of growth can increase vertebral bone volume, but β-catenin has differential effects on vertebral growth and remodeling when activated at different postnatal stages.
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Tabler JM, Barrell WB, Szabo-Rogers HL, Healy C, Yeung Y, Perdiguero EG, Schulz C, Yannakoudakis BZ, Mesbahi A, Wlodarczyk B, Geissmann F, Finnell RH, Wallingford JB, Liu KJ. Fuz mutant mice reveal shared mechanisms between ciliopathies and FGF-related syndromes. Dev Cell 2013; 25:623-35. [PMID: 23806618 PMCID: PMC3697100 DOI: 10.1016/j.devcel.2013.05.021] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Revised: 03/29/2013] [Accepted: 05/23/2013] [Indexed: 12/25/2022]
Abstract
Ciliopathies are a broad class of human disorders with craniofacial dysmorphology as a common feature. Among these is high arched palate, a condition that affects speech and quality of life. Using the ciliopathic Fuz mutant mouse, we find that high arched palate does not, as commonly suggested, arise from midface hypoplasia. Rather, increased neural crest expands the maxillary primordia. In Fuz mutants, this phenotype stems from dysregulated Gli processing, which in turn results in excessive craniofacial Fgf8 gene expression. Accordingly, genetic reduction of Fgf8 ameliorates the maxillary phenotypes. Similar phenotypes result from mutation of oral-facial-digital syndrome 1 (Ofd1), suggesting that aberrant transcription of Fgf8 is a common feature of ciliopathies. High arched palate is also a prevalent feature of fibroblast growth factor (FGF) hyperactivation syndromes. Thus, our findings elucidate the etiology for a common craniofacial anomaly and identify links between two classes of human disease: FGF-hyperactivation syndromes and ciliopathies. A genetic model for high arched palate, commonly seen in human craniofacial syndromes In ciliopathic mice, Fgf8 overexpression leads to cranial neural crest hyperplasia Enlargement of the maxillary primordia underlies high arched palate in Fuz mutants An etiological link between ciliopathies and FGF-hyperactivation syndromes
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Affiliation(s)
- Jacqueline M Tabler
- Department of Craniofacial Development and Stem Cell Biology, Dental Institute, King's College London, London SE1 9RT, UK
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Stewart K, Uetani N, Hendriks W, Tremblay ML, Bouchard M. Inactivation of LAR family phosphatase genes Ptprs and Ptprf causes craniofacial malformations resembling Pierre-Robin sequence. Development 2013; 140:3413-22. [DOI: 10.1242/dev.094532] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Leukocyte antigen related (LAR) family receptor protein tyrosine phosphatases (RPTPs) regulate the fine balance between tyrosine phosphorylation and dephosphorylation that is crucial for cell signaling during development and tissue homeostasis. Here we show that LAR RPTPs are required for normal development of the mandibular and maxillary regions. Approximately half of the mouse embryos lacking both Ptprs (RPTPσ) and Ptprf (LAR) exhibit micrognathia (small lower jaw), cleft palate and microglossia/glossoptosis (small and deep tongue), a phenotype closely resembling Pierre-Robin sequence in humans. We show that jaw bone and cartilage patterning occurs aberrantly in LAR family phosphatase-deficient embryos and that the mandibular arch harbors a marked decrease in cell proliferation. Analysis of signal transduction in embryonic tissues and mouse embryonic fibroblast cultures identifies an increase in Bmp-Smad signaling and an abrogation of canonical Wnt signaling associated with loss of the LAR family phosphatases. A reactivation of β-catenin signaling by chemical inhibition of GSK3β successfully resensitizes LAR family phosphatase-deficient cells to Wnt induction, indicating that RPTPs are necessary for normal Wnt/β-catenin pathway activation. Together these results identify LAR RPTPs as important regulators of craniofacial morphogenesis and provide insight into the etiology of Pierre-Robin sequence.
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Affiliation(s)
- Katherine Stewart
- Goodman Cancer Research Centre, Department of Biochemistry, McGill University, Montreal, 1160 Pine Avenue W. Montreal, QC H3A 1A3, Canada
| | - Noriko Uetani
- Goodman Cancer Research Centre, Department of Biochemistry, McGill University, Montreal, 1160 Pine Avenue W. Montreal, QC H3A 1A3, Canada
| | - Wiljan Hendriks
- Department of Cell Biology, Nijmegen, Radboud University Nijmegen Medical Centre, PO Box 9101, 6500 HB Nijmegen, The Netherlands
| | - Michel L. Tremblay
- Goodman Cancer Research Centre, Department of Biochemistry, McGill University, Montreal, 1160 Pine Avenue W. Montreal, QC H3A 1A3, Canada
| | - Maxime Bouchard
- Goodman Cancer Research Centre, Department of Biochemistry, McGill University, Montreal, 1160 Pine Avenue W. Montreal, QC H3A 1A3, Canada
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Wang Y, Zheng Y, Chen D, Chen Y. Enhanced BMP signaling prevents degeneration and leads to endochondral ossification of Meckel's cartilage in mice. Dev Biol 2013; 381:301-11. [PMID: 23891934 DOI: 10.1016/j.ydbio.2013.07.016] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2013] [Revised: 07/02/2013] [Accepted: 07/16/2013] [Indexed: 10/26/2022]
Abstract
Meckel's cartilage is a transient supporting tissue of the embryonic mandible in mammals, and disappears by taking different ultimate cell fate along the distal-proximal axis, with the majority (middle portion) undergoing degeneration and chondroclastic resorption. While a number of factors have been implicated in the degeneration and resorption processes, signaling pathways that trigger this degradation are currently unknown. BMP signaling has been implicated in almost every step of chondrogenesis. In this study, we used Noggin mutant mice as a model for gain-of-BMP signaling function to investigate the function of BMP signaling in Meckel's cartilage development, with a focus on the middle portion. We showed that Bmp2 and Bmp7 are expressed in early developing Meckels' cartilage, but their expression disappears thereafter. In contrast, Noggin is expressed constantly in Meckel's cartilage throughout the entire gestation period. In the absence of Noggin, Meckel's cartilage is significantly thickened attributing to dramatically elevated cell proliferation rate associated with enhanced phosphorylated Smad1/5/8 expression. Interestingly, instead of taking a degeneration fate, the middle portion of Meckel's cartilage in Noggin mutants undergoes chondrogenic differentiation and endochondral ossification contributing to the forming mandible. Chondrocyte-specific expression of a constitutively active form of BMPRIa but not BMPRIb leads to enlargement of Meckel's cartilage, phenocopying the consequence of Noggin deficiency. Our results demonstrate that elevated BMP signaling prevents degeneration and leads to endochondral ossification of Meckel's cartilage, and support the idea that withdrawal of BMP signaling is required for normal Meckel's cartilage development and ultimate cell fate.
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Affiliation(s)
- Ying Wang
- Department of Operative Dentistry and Endodontics, College of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi Province, PR China
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Li X, Florez S, Wang J, Cao H, Amendt BA. Dact2 represses PITX2 transcriptional activation and cell proliferation through Wnt/beta-catenin signaling during odontogenesis. PLoS One 2013; 8:e54868. [PMID: 23349981 PMCID: PMC3551926 DOI: 10.1371/journal.pone.0054868] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Accepted: 12/19/2012] [Indexed: 11/19/2022] Open
Abstract
Dact proteins belong to the Dapper/Frodo protein family and function as cytoplasmic attenuators in Wnt and TGFβ signaling. Previous studies show that Dact1 is a potent Wnt signaling inhibitor by promoting degradation of β-catenin. We report a new mechanism for Dact2 function as an inhibitor of the canonical Wnt signaling pathway by interacting with PITX2. PITX2 is a downstream transcription factor in Wnt/β-catenin signaling, and PITX2 synergizes with Lef-1 to activate downstream genes. Immunohistochemistry verified the expression of Dact2 in the tooth epithelium, which correlated with Pitx2 epithelial expression. Dact2 loss of function and PITX2 gain of function studies reveal a feedback mechanism for controlling Dact2 expression. Pitx2 endogenously activates Dact2 expression and Dact2 feeds back to repress Pitx2 transcriptional activity. A Topflash reporter system was employed showing PITX2 activation of Wnt signaling, which is attenuated by Dact2. Transient transfections demonstrate the inhibitory effect of Dact2 on critical dental epithelial differentiation factors during tooth development. Dact2 significantly inhibits PITX2 activation of the Dlx2 and amelogenin promoters. Multiple lines of evidence conclude the inhibition is achieved by the physical interaction between Dact2 and Pitx2 proteins. The loss of function of Dact2 also reveals increased cell proliferation due to up-regulated Wnt downstream genes, cyclinD1 and cyclinD2. In summary, we have identified a novel role for Dact2 as an inhibitor of the canonical Wnt pathway in embryonic tooth development through its regulation of cell proliferation and differentiation.
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Affiliation(s)
- Xiao Li
- Department of Anatomy and Cell Biology, The University of Iowa, Iowa City, Iowa, United States of America
| | - Sergio Florez
- Department of Anatomy and Cell Biology, The University of Iowa, Iowa City, Iowa, United States of America
| | - Jianbo Wang
- Department of Anatomy and Cell Biology, The University of Iowa, Iowa City, Iowa, United States of America
| | - Huojun Cao
- Department of Anatomy and Cell Biology, The University of Iowa, Iowa City, Iowa, United States of America
| | - Brad A. Amendt
- Department of Anatomy and Cell Biology, The University of Iowa, Iowa City, Iowa, United States of America
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Zilber Y, Babayeva S, Seo JH, Liu JJ, Mootin S, Torban E. The PCP effector Fuzzy controls cilial assembly and signaling by recruiting Rab8 and Dishevelled to the primary cilium. Mol Biol Cell 2013; 24:555-65. [PMID: 23303251 PMCID: PMC3583660 DOI: 10.1091/mbc.e12-06-0437] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
During vertebrate development, the PCP pathway controls multiple cellular processes. Loss of the gene for the PCP effector Fuzzy affects formation of primary cilia via mostly unknown mechanisms. We report that Fuzzy localizes to the primary cilia and orchestrates delivery of Rab8 and Dishevelled to the primary cilium; loss of Fuzzy affects cilia-dependent signaling. The planar cell polarity (PCP) pathway controls multiple cellular processes during vertebrate development. Recently the PCP pathway was implicated in ciliogenesis and in ciliary function. The primary cilium is an apically projecting solitary organelle that is generated via polarized intracellular trafficking. Because it acts as a signaling nexus, defects in ciliogenesis or cilial function cause multiple congenital anomalies in vertebrates. Loss of the PCP effector Fuzzy affects PCP signaling and formation of primary cilia; however, the mechanisms underlying these processes are largely unknown. Here we report that Fuzzy localizes to the basal body and ciliary axoneme and is essential for ciliogenesis by delivering Rab8 to the basal body and primary cilium. Fuzzy appears to control subcellular localization of the core PCP protein Dishevelled, recruiting it to Rab8-positive vesicles and to the basal body and cilium. We show that loss of Fuzzy results in inhibition of PCP signaling and hyperactivation of the canonical WNT pathway. We propose a mechanism by which Fuzzy participates in ciliogenesis and affects both canonical WNT and PCP signaling.
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Affiliation(s)
- Yulia Zilber
- Department of Medicine, McGill University, Montreal, QC H3A 2B4, Canada
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Abstract
The primary cilium is a highly conserved environmental sensor and modulator of fluid movement in tubular structures. The growing recognition of mutations among its many components has led to the discovery of new disorders collectively called ciliopathies. Ciliary dysfunction disturbs a variety of signaling pathways along its basal body and axoneme that are critical for embryonic development and cell and organ homeostasis. Among the many pathways, here we discuss the emerging role of Wnt proteins in morphogenic signaling and ciliary biology during health and disease.
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Affiliation(s)
- Edwin C Oh
- Center for Human Disease Modeling, Department of Cell Biology, 466 Nanaline Building, Duke University, Durham, NC 27710, USA
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