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Douka A, Goutzanis L, Vlachakis D, Chrousos GP, Yapijakis C. Molecular Modeling Analysis Provides Genotype-Phenotype Correlation Insights in a Patient with Ankyloblepharon-Ectodermal Dysplasia-Clefting Syndrome. Genes (Basel) 2023; 14:1246. [PMID: 37372427 DOI: 10.3390/genes14061246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 06/02/2023] [Accepted: 06/07/2023] [Indexed: 06/29/2023] Open
Abstract
Ankyloblepharon-ectodermal defects-cleft lip/palate (AEC) syndrome is a rare autosomal dominant disorder. AEC is caused by mutations in the TP63 gene that encodes the tumor suppressor p63 protein, itself involved in the regulation of epidermal proliferation, development, and differentiation. We present here a typical AEC case of a four-year-old girl with extensive skin erosions and erythroderma of the scalp and the trunk, and to a lesser extent of the limbs, nail dystrophy on the fingers and toes, xerophthalmia, a high-arched palate, oligodontia, and hypohidrosis. Mutation analysis of the TP63 gene detected a de novo missense mutation in exon 14 (c.1799G>T; p.Gly600Val). We discuss the phenotype-genotype correlation by presenting the clinical features of AEC in the patient, and the effect of the detected mutation in p63 structure and function using protein structural modeling, in view of similar cases in the literature. We performed a molecular modeling study in order to link the effect on the protein structure level of the missense mutation G600V. We noted that the introduction of the bulkier Valine residue in place of the slim Glycine residue caused a significantly altered 3D conformational arrangement of that protein region, pushing away the adjacent antiparallel α helix. We propose that the introduced locally altered structure of the G600V mutant p63 has a significant functional effect on specific protein-protein interactions, thus affecting the clinical phenotype.
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Affiliation(s)
- Anna Douka
- Unit of Orofacial Genetics, 1st Department of Pediatrics, School of Medicine, National Kapodistrian University of Athens, "Aghia Sophia" Children's Hospital, 11527 Athens, Greece
- Laboratory of Molecular Genetics, Cephalogenetics Center, 17675 Athens, Greece
| | - Lambros Goutzanis
- Department of Oral and Maxillofacial Surgery, School of Dentistry, National Kapodistrian University of Athens, 11527 Athens, Greece
| | - Dimitrios Vlachakis
- Laboratory of Genetics, Department of Biotechnology, School of Applied Biology and Biotechnology, Agricultural University of Athens, 11855 Athens, Greece
- University Research Institute for the Study of Genetic and Malignant Disorders in Childhood, Choremion Laboratory, "Aghia Sophia" Children's Hospital, 11527 Athens, Greece
| | - George P Chrousos
- University Research Institute for the Study of Genetic and Malignant Disorders in Childhood, Choremion Laboratory, "Aghia Sophia" Children's Hospital, 11527 Athens, Greece
| | - Christos Yapijakis
- Unit of Orofacial Genetics, 1st Department of Pediatrics, School of Medicine, National Kapodistrian University of Athens, "Aghia Sophia" Children's Hospital, 11527 Athens, Greece
- Laboratory of Molecular Genetics, Cephalogenetics Center, 17675 Athens, Greece
- University Research Institute for the Study of Genetic and Malignant Disorders in Childhood, Choremion Laboratory, "Aghia Sophia" Children's Hospital, 11527 Athens, Greece
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Harazono Y, Morita KI, Tonouchi E, Anzai E, Takahara N, Kohmoto T, Imoto I, Yoda T. TP63 mutation mapping information in TP63 mutation-associated syndromes. ADVANCES IN ORAL AND MAXILLOFACIAL SURGERY 2022. [DOI: 10.1016/j.adoms.2022.100253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Soares E, Zhou H. Master regulatory role of p63 in epidermal development and disease. Cell Mol Life Sci 2018; 75:1179-1190. [PMID: 29103147 PMCID: PMC5843667 DOI: 10.1007/s00018-017-2701-z] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 10/16/2017] [Accepted: 10/26/2017] [Indexed: 01/19/2023]
Abstract
The transcription factor p63 is a master regulator of epidermal development. Mutations in p63 give rise to human developmental diseases that often manifest epidermal defects. In this review, we summarize major p63 isoforms identified so far and p63 mutation-associated human diseases that show epidermal defects. We discuss key roles of p63 in epidermal keratinocyte proliferation and differentiation, emphasizing its master regulatory control of the gene expression pattern and epigenetic landscape that define epidermal fate. We subsequently review the essential function of p63 during epidermal commitment and transdifferentiation towards epithelial lineages, highlighting the notion that p63 is the guardian of the epithelial lineage. Finally, we discuss current therapeutic development strategies for p63 mutation-associated diseases. Our review proposes future directions for dissecting p63-controlled mechanisms in normal and diseased epidermal development and for developing therapeutic options.
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Affiliation(s)
- Eduardo Soares
- Department of Molecular Developmental Biology, Faculty of Science, Radboud Institute for Molecular Life Sciences, Radboud University, 274, Postbus 9101, 6500HB, Nijmegen, The Netherlands
- CAPES Foundation, Ministry of Education of Brazil, Brasília, Brazil
| | - Huiqing Zhou
- Department of Molecular Developmental Biology, Faculty of Science, Radboud Institute for Molecular Life Sciences, Radboud University, 274, Postbus 9101, 6500HB, Nijmegen, The Netherlands.
- Department of Human Genetics, Radboud University Medical Center, 855, Postbus 9101, 6500HB, Nijmegen, The Netherlands.
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Khalfi L, Hamama J, Mahroug L, Arrob A, Sabani H, El Khatib K. [Hay-Wells syndrome: A case report]. Arch Pediatr 2016; 23:163-6. [PMID: 26724982 DOI: 10.1016/j.arcped.2015.11.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Revised: 08/08/2015] [Accepted: 11/20/2015] [Indexed: 11/19/2022]
Abstract
Hay-Wells syndrome is a rare form of ectodermal dysplasia. We report a case of a 5-year-old girl, the daughter of non-consanguineous parents. She had the characteristic of facial dysmorphia of Hay-Wells syndrome. Molecular analysis confirmed diagnosis. The patient had a cleft palate, which is considered one of cardinal signs of this syndrome. She underwent Veau-Wardill-Kilner palatoplasty with satisfactory results. Through this case report, we describe the maxillofacial manifestations of this syndrome with a literature review.
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Affiliation(s)
- L Khalfi
- Service de stomatologie et chirurgie maxillo-faciale, hôpital militaire d'instruction Mohammed-V, 10100 Rabat, Maroc.
| | - J Hamama
- Service de stomatologie et chirurgie maxillo-faciale, hôpital militaire d'instruction Mohammed-V, 10100 Rabat, Maroc
| | - L Mahroug
- Service de stomatologie et chirurgie maxillo-faciale, hôpital militaire d'instruction Mohammed-V, 10100 Rabat, Maroc
| | - A Arrob
- Service de stomatologie et chirurgie maxillo-faciale, hôpital militaire d'instruction Mohammed-V, 10100 Rabat, Maroc
| | - H Sabani
- Service de stomatologie et chirurgie maxillo-faciale, hôpital militaire d'instruction Mohammed-V, 10100 Rabat, Maroc
| | - K El Khatib
- Service de stomatologie et chirurgie maxillo-faciale, hôpital militaire d'instruction Mohammed-V, 10100 Rabat, Maroc
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Shkoukani MA, Lawrence LA, Liebertz DJ, Svider PF. Cleft palate: A clinical review. ACTA ACUST UNITED AC 2014; 102:333-42. [DOI: 10.1002/bdrc.21083] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 10/27/2014] [Indexed: 01/30/2023]
Affiliation(s)
- Mahdi A. Shkoukani
- Department of Otolaryngology-Head and Neck Surgery; Wayne State University School of Medicine; Detroit Michigan
- Department of Otolaryngology-Head and Neck Surgery; Division of Craniofacial Surgery, Wayne State University School of Medicine; Detroit Michigan
- Division of Facial Plastic and Reconstructive Surgery; Wayne State University School of Medicine; Detroit Michigan
| | - Lauren A. Lawrence
- Department of Otolaryngology-Head and Neck Surgery; Wayne State University School of Medicine; Detroit Michigan
| | - Daniel J. Liebertz
- Department of Otolaryngology-Head and Neck Surgery; Wayne State University School of Medicine; Detroit Michigan
| | - Peter F. Svider
- Department of Otolaryngology-Head and Neck Surgery; Wayne State University School of Medicine; Detroit Michigan
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Biggs LC, Goudy SL, Dunnwald M. Palatogenesis and cutaneous repair: A two-headed coin. Dev Dyn 2014; 244:289-310. [PMID: 25370680 DOI: 10.1002/dvdy.24224] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Revised: 10/14/2014] [Accepted: 10/27/2014] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND The reparative mechanism that operates following post-natal cutaneous injury is a fundamental survival function that requires a well-orchestrated series of molecular and cellular events. At the end, the body will have closed the hole using processes like cellular proliferation, migration, differentiation and fusion. RESULTS These processes are similar to those occurring during embryogenesis and tissue morphogenesis. Palatogenesis, the formation of the palate from two independent palatal shelves growing towards each other and fusing, intuitively, shares many similarities with the closure of a cutaneous wound from the two migrating epithelial fronts. CONCLUSIONS In this review, we summarize the current information on cutaneous development, wound healing, palatogenesis and orofacial clefting and propose that orofacial clefting and wound healing are conserved processes that share common pathways and gene regulatory networks.
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Affiliation(s)
- Leah C Biggs
- Department of Pediatrics, Carver College of Medicine, The University of Iowa, Iowa City, Iowa
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van Straten C, Butow KW. Gene p63: In ectrodactyly-ectodermal dysplasia clefting, ankyloblepharon-ectodermal dysplasia, Rapp-Hodgkin syndrome. Ann Maxillofac Surg 2013; 3:58-61. [PMID: 23662261 PMCID: PMC3645613 DOI: 10.4103/2231-0746.110085] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
INTRODUCTION An analysis was made of three different syndromes associated with p63 gene mutations, known as ectrodactyly-ectodermal dysplasia-clefting syndrome (EEC), ankyloblepharon-ectodermal dysplasia clefting syndrome (AEC or Hay-Wells) and Rapp-Hodgkin syndrome (RHS). The postoperative complications associated with their cleft reconstructions were also evaluated. MATERIALS AND METHODS Extensive demographic information, in particular of the clinical appearances, associated malformations, and the types and complications of the reconstructive surgical procedures, were recorded of these syndromic cases occurring in a database of 3621 facial cleft deformity patients. The data was analyzed using the Microsoft Excel program. RESULTS A total of 10 (0.28%) cases of p63 associated syndromes were recorded: EEC (6), RHS (3), and AEC (1). The following clinical cleft appearances were noted - EEC = 6: CLA 1 -right side unilateral (female); CLAP 4 - right side (1) + left side (1) unilateral (male + female); bilateral (2) (males); hPsP 1 (female) (divided in 3 Black, 2 White, 1 Indian); RHS = 3: CLAP 2 (White males); hPsP 1 (White female); AEC = 1: CLAP bilateral (White male). Other features of the syndromes were: skin, hand, foot, tooth, hair and nail involvement, and light sensitivity. Postoperative complications included: (i) stenosis of nasal opening, especially after reconstruction of the bilateral cleft lip and the columella lengthening (2 cases), (ii) premaxilla-prolabium fusion (2 cases), (iii) repeated occurrence of oro-nasal fistula in the hard palate (4 cases), and (iv) dysgnathial development of midfacial structures (3 cases). DISCUSSION Three different p63 associated syndromes (EEC, AEC, and RHS) were diagnosed (0.27% of the total facial cleft deformities database). The majority of the cases presented with a bilateral CLAP in males only. A number of females and males had unilateral CLA. The hPsP-cleft was recorded in females only. The associated ectodermal component most probably had a profoundly negative influence on postoperatively wound healing, which was observed in particular at the nasal openings, the premaxilla sulcus and in the hard palate mucosa. The reconstruction of p63 associated syndromes is a greater challenge than the usual cleft reconstruction to the surgeon.
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Affiliation(s)
- Cornelia van Straten
- Department of Maxillo-facial and Oral Surgery, Facial Cleft Deformity Clinic, University of Pretoria, South Africa
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Dynamic expression of the p53 family members p63 and p73 in the mouse and human telencephalon during development and in adulthood. Brain Res 2010; 1372:29-40. [PMID: 21114965 DOI: 10.1016/j.brainres.2010.11.041] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2010] [Revised: 10/22/2010] [Accepted: 11/09/2010] [Indexed: 12/28/2022]
Abstract
p63 and p73, family members of the tumor suppressor p53, are critically involved in the life and death of mammalian cells. They display high homology and may act in concert. The p73 gene is relevant for brain development, and p73-deficient mice display important malformations of the telencephalon. In turn, p63 is essential for the development of stratified epithelia and may also play a part in neuronal survival and aging. We show here that p63 and p73 are dynamically expressed in the embryonic and adult mouse and human telencephalon. During embryonic stages, Cajal-Retzius cells derived from the cortical hem co-express p73 and p63. Comparison of the brain phenotypes of p63- and p73- deficient mice shows that only the loss of p73 function leads to the loss of Cajal-Retzius cells, whereas p63 is apparently not essential for brain development and Cajal-Retzius cell formation. In postnatal mice, p53, p63, and p73 are present in cells of the subventricular zone (SVZ) of the lateral ventricle, a site of continued neurogenesis. The neurogenetic niche is reduced in size in p73-deficient mice, and the numbers of young neurons near the ventricular wall, marked with doublecortin, Tbr1 and calretinin, are dramatically decreased, suggesting that p73 is important for SVZ proliferation. In contrast to their restricted expression during brain development, p73 and p63 are widely detected in pyramidal neurons of the adult human cortex and hippocampus at protein and mRNA levels, pointing to a role of both genes in neuronal maintenance in adulthood.
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Pettit S, Campbell PR. Ectrodactyly-ectodermal dysplasia-clefting syndrome: the oral hygiene management of a patient with EEC. SPECIAL CARE IN DENTISTRY 2010; 30:250-4. [PMID: 21044105 DOI: 10.1111/j.1754-4505.2010.00162.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Ectrodactyly-ectodermal dysplasia-clefting syndrome (EEC) is a rare genetic disorder. EEC was first described in 1970 and occurs in 7 of 10,000 people. This paper discusses the effects of EEC and the dental complications typically associated with this syndrome. It is important for dental practitioners to be aware of EEC due to the number of dental conditions associated with it. A case report is presented to discuss the dental management, especially issues related to oral hygiene, of a patient who had EEC.
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Affiliation(s)
- Stacy Pettit
- Department of Dental Hygiene, Baylor College of Dentistry, Dallas, Texas, USA.
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Cole P, Hatef DA, Kaufman Y, Magruder A, Bree A, Friedman E, Sindwani R, Hollier LH. Facial clefting and oroauditory pathway manifestations in ankyloblepharon-ectodermal defects-cleft lip/palate (AEC) syndrome. Am J Med Genet A 2009; 149A:1910-5. [DOI: 10.1002/ajmg.a.32836] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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