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Gram SB, Jørgensen ASF, Bygum A, Brusgaard K, Ousager LB. Identification of a founder variant AAGAB c.370C>T, p.Arg124Ter in patients with punctate palmoplantar keratoderma in Southern Denmark. Clin Genet 2024; 105:561-566. [PMID: 38311882 DOI: 10.1111/cge.14486] [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: 11/09/2023] [Revised: 12/19/2023] [Accepted: 01/05/2024] [Indexed: 02/06/2024]
Abstract
Palmoplantar keratoderma (PPK) is a heterogeneous group of rare skin diseases characterized by hyperkeratosis on the palms or soles. The subtype isolated punctate PPK is caused by heterozygous variants in AAGAB. We investigated if the variant AAGAB c.370C>T, p.Arg124Ter in patients with punctate PPK in the Region of Southern Denmark represented a founder variant and estimated the age to the most recent common ancestor. We performed haplotype analysis on samples from 20 patients diagnosed with punctate PPK and the AAGAB c.370C>T, p.Arg124Ter variant. Using the Gamma Method, we calculated the years to the most recent common ancestor. We also explored the presence of the variant in other populations through literature and databases (HGMD, ClinVar, and gnomAD). Our analysis revealed a shared haplotype of 3.0 Mb, suggesting shared ancestry. The ancestral haplogroup was estimated to an age of 12.1 generations (CI: 4.9-20.3) equivalent to approximately 339 years (CI: 137-568). This study confirms that the frequently observed variant AAGAB c.370C>T, p.Arg124Ter in punctate PPK among patients in the Region of Southern Denmark is caused by a founder variant. We recommend testing for the variant as initial screening in our region and potentially for all Danish patients presenting with punctate PPK.
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Affiliation(s)
- Stine Bjørn Gram
- Department of Clinical Genetics, Odense University Hospital, Odense, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
- European Reference Network for Rare Skin Diseases (ERN-Skin), Odense, Denmark
| | | | - Anette Bygum
- Department of Clinical Genetics, Odense University Hospital, Odense, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
- Hudklinikken Kolding, Kolding, Denmark
| | - Klaus Brusgaard
- Department of Clinical Genetics, Odense University Hospital, Odense, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Lilian Bomme Ousager
- Department of Clinical Genetics, Odense University Hospital, Odense, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
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2
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Clabbers JMK, Roemen GMJM, Rajan N, Shah A, Woo P, Arefi M, Vreeburg M, Steijlen PM, Gostyński A, van Geel M. HRAS mosaicism in linear palmoplantar keratoderma. J Eur Acad Dermatol Venereol 2024; 38:e382-e384. [PMID: 37909292 DOI: 10.1111/jdv.19613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 10/24/2023] [Indexed: 11/03/2023]
Affiliation(s)
- J M K Clabbers
- Department of Dermatology, Maastricht University Medical Centre+, Maastricht, The Netherlands
- Department of Dermatology, Haga Hospital, The Hague, The Netherlands
| | - G M J M Roemen
- Department of Pathology, Maastricht University Medical Centre +, Maastricht, The Netherlands
| | - N Rajan
- Department of Dermatology, Newcastle University, Newcastle, UK
| | - A Shah
- Department of Dermatology, Northampton General Hospital, Northampton, UK
| | - P Woo
- Department of Dermatology, Northampton General Hospital, Northampton, UK
| | - M Arefi
- Department of Dermatology, Newcastle University, Newcastle, UK
| | - M Vreeburg
- Department of Clinical Genetics, Maastricht University Medical Centre +, Maastricht, The Netherlands
| | - P M Steijlen
- Department of Dermatology, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - A Gostyński
- Department of Dermatology, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - M van Geel
- Department of Dermatology, Maastricht University Medical Centre+, Maastricht, The Netherlands
- Department of Clinical Genetics, Maastricht University Medical Centre +, Maastricht, The Netherlands
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3
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O'Toole EA, Kelsell DP, Caterina MJ, de Brito M, Hansen D, Hickerson RP, Hovnanian A, Kaspar R, Lane EB, Paller AS, Schwartz J, Shroot B, Teng J, Titeux M, Coulombe PA, Sprecher E. Pachyonychia Congenita: A Research Agenda Leading to New Therapeutic Approaches. J Invest Dermatol 2024; 144:748-754. [PMID: 38099888 DOI: 10.1016/j.jid.2023.10.030] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Accepted: 10/23/2023] [Indexed: 03/24/2024]
Abstract
Pachyonychia congenita (PC) is a dominantly inherited genetic disorder of cornification. PC stands out among other genodermatoses because despite its rarity, it has been the focus of a very large number of pioneering translational research efforts over the past 2 decades, mostly driven by a patient support organization, the Pachyonychia Congenita Project. These efforts have laid the ground for innovative strategies that may broadly impact approaches to the management of other inherited cutaneous and noncutaneous diseases. This article outlines current avenues of research in PC, expected outcomes, and potential hurdles.
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Affiliation(s)
- Edel A O'Toole
- Centre for Cell Biology and Cutaneous Research, Blizard Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom; Department of Dermatology, Royal London Hospital, Barts Health NHS Trust, London, United Kingdom
| | - David P Kelsell
- Centre for Cell Biology and Cutaneous Research, Blizard Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Michael J Caterina
- Department of Neurosurgery, Neurosurgery Pain Research Institute, Johns Hopkins School of Medicine, Baltimore, Maryland, USA; Department of Biological Chemistry, Johns Hopkins School of Medicine, Baltimore, Maryland, USA; The Solomon H. Snyder Department of Neuroscience, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
| | - Marianne de Brito
- Centre for Cell Biology and Cutaneous Research, Blizard Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - David Hansen
- Department of Dermatology, School of Medicine, University of Utah, Salt Lake City, Utah, USA
| | - Robyn P Hickerson
- Division of Biological Chemistry and Drug Discovery, University of Dundee, Dundee, United Kingdom
| | - Alain Hovnanian
- INSERM UMR 1163, Laboratory of genetic skin diseases, Institut Imagine, Université Paris Cité, Paris, France; Department of Genomic Medicine of Rare Diseases, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | | | - E Birgitte Lane
- A∗STAR Skin Research Laboratories, Skin Research Institute of Singapore, Singapore, Singapore
| | - Amy S Paller
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA; Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | | | | | - Joyce Teng
- Pediatric Dermatology, Stanford University School of Medicine, Stanford, California, USA
| | - Matthias Titeux
- INSERM UMR 1163, Laboratory of genetic skin diseases, Institut Imagine, Université Paris Cité, Paris, France
| | - Pierre A Coulombe
- Department of Cell & Developmental Biology, University of Michigan Medical School, Ann Arbor, Michigan, USA; Department of Dermatology, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Eli Sprecher
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Department of Human Molecular Genetics and Biochemistry, School of Medicine, Tel-Aviv University, Tel Aviv, Israel.
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4
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Nanda A, Chang YH, Cheng HC, Lai IT, Al-Lafi A, McGrath JA, Hsu CK. Autosomal recessive plantar keratoderma with ragged periungual hyperkeratosis caused by a homozygous missense variant in KRT16. Br J Dermatol 2024; 190:588-590. [PMID: 38170465 DOI: 10.1093/bjd/ljae001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 12/20/2023] [Accepted: 01/13/2024] [Indexed: 01/05/2024]
Abstract
In the present study, we report a consanguineous Kuwaiti pedigree with pseudo-dominant inheritance of a recessive KRT16 variant in which homozygotes had focal nonepidermolytic palmoplantar keratoderma accompanied by ragged periungual hyperkeratosis. The key value of this submission is that we believe we have identified the first autosomal recessive inherited skin disorder resulting from pathogenic variants in the keratin 16 gene, KRT16. Our findings expand both the genetic basis and phenotypic expression of inherited KRT16-related disorders.
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Affiliation(s)
- Arti Nanda
- As'ad Al-Hamad Dermatology Center, Kuwait
| | - Yi-Han Chang
- Department of Dermatology, National Cheng Kung University Hospital, College of Medicine
| | - Hui-Ching Cheng
- Department of Dermatology, National Cheng Kung University Hospital, College of Medicine
| | - I Tzu Lai
- Department of Dermatology, National Cheng Kung University Hospital, College of Medicine
| | | | - John A McGrath
- Department of Dermatology, National Cheng Kung University Hospital, College of Medicine
- St John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, London, UK
| | - Chao-Kai Hsu
- Department of Dermatology, National Cheng Kung University Hospital, College of Medicine
- International Research Center of Wound Repair and Regeneration (iWRR)
- Institute of Clinical Medicine, College of Medicine; National Cheng Kung University, Tainan, Taiwan
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Thakker S, Owusu-Agyei M, Marchalik R, Kang JK. Spontaneous clinical remission of Nagashima-type palmoplantar keratoderma in a patient of Korean descent with a heterozygous SERPINB7 mutation. Pediatr Dermatol 2024; 41:369-371. [PMID: 38165066 DOI: 10.1111/pde.15511] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 12/16/2023] [Indexed: 01/03/2024]
Abstract
Nagashima-type palmoplantar keratoderma (NPPK) is an autosomal recessive form of diffuse palmoplantar keratoderma (PPK) characterized by thickening and redness of palms and/or soles. In this report, we describe a female patient of Korean descent who had clinical remission of her adult-onset NPPK. To our knowledge, she is the first reported heterozygous SERBINB7 mutation carrier to present with classic NPPK who achieved spontaneous clinical remission.
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Affiliation(s)
- Sach Thakker
- Georgetown University School of Medicine, Washington, District of Columbia, USA
| | - Mariah Owusu-Agyei
- Department of Dermatology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Rachel Marchalik
- Department of Dermatology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Jun Kevin Kang
- Department of Dermatology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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Andrei D, Bremer J, Kramer D, Nijenhuis AM, van der Molen M, Diercks GFH, van den Akker PC, Vermeer MCSC, van der Meer P, Bolling MC. Epidermal growth factor receptor inhibition leads to cellular phenotype correction of DSP-mutated keratinocytes. Exp Dermatol 2024; 33:e15046. [PMID: 38509711 DOI: 10.1111/exd.15046] [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: 10/18/2023] [Revised: 01/27/2024] [Accepted: 02/15/2024] [Indexed: 03/22/2024]
Abstract
Desmoplakin (DSP) is a desmosomal component expressed in skin and heart, essential for desmosome stability and intermediate filament connection. Pathogenic variants in the DSP gene encoding DSP, lead to heterogeneous skin, adnexa and heart-related phenotypes, including skin fragility, woolly hair (WH), palmoplantar keratoderma (PPK) and arrhythmogenic/dilated cardiomyopathy (ACM/DCM). The ambiguity of computer-based prediction analysis of pathogenicity and effect of DSP variants, indicates a necessity for functional analysis. Here, we report a heterozygous DSP variant that was not previously described, NM_004415.4:c.3337C>T (NM_004415.4(NP_004406.2):p.(Arg1113*)) in a patient with PPK, WH and ACM. RNA and protein analysis revealed ~50% reduction of DSP mRNA and protein expression. Patient's keratinocytes showed fragile cell-cell connections and perinuclear retracted intermediate filaments. Epidermal growth factor receptor (EGFR) is a transmembrane protein expressed in the basal epidermal layer involved in proliferation and differentiation, processes that are disrupted in the development of PPK, and in the regulation of the desmosome. In skin of the abovementioned patient, evident EGFR upregulation was observed. EGFR inhibition in patient's keratinocytes strongly increased DSP expression at the plasma membrane, improved intermediate filament connection with the membrane edges and reduced the cell-cell fragility. This cell phenotypic recovery was due to a translocation of DSP to the plasma membrane together with an increased number of desmosomes. These results indicate a therapeutic potential of EGFR inhibitors for disorders caused by DSP haploinsufficiency.
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Affiliation(s)
- Daniela Andrei
- Department of Dermatology, Expertise Center for Blistering Diseases, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Jeroen Bremer
- Department of Dermatology, Expertise Center for Blistering Diseases, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Duco Kramer
- Department of Dermatology, Expertise Center for Blistering Diseases, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Albertine M Nijenhuis
- Department of Dermatology, Expertise Center for Blistering Diseases, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Marije van der Molen
- Department of Dermatology, Expertise Center for Blistering Diseases, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Gilles F H Diercks
- Department of Pathology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Peter C van den Akker
- Department of Genetics, Expertise Center for Blistering Diseases, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Mathilde C S C Vermeer
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Peter van der Meer
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Maria C Bolling
- Department of Dermatology, Expertise Center for Blistering Diseases, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
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Goto M, Matsuda-Hirose H, Nishida H, Kumagi M, Moriyama K, Aoki S, Kubo A, Hatano Y. Nagashima-type palmoplantar keratosis associated with Tc17 cells in a patient with rheumatoid arthritis. Eur J Dermatol 2024; 34:93-95. [PMID: 38557467 DOI: 10.1684/ejd.2024.4598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Affiliation(s)
| | | | | | - Midori Kumagi
- Department of Rheumatology, Faculty of Medicine, Oita University, Oita, Japan
| | - Kaori Moriyama
- Department of Rheumatology, Faculty of Medicine, Oita University, Oita, Japan
| | - Satomi Aoki
- Department of Dermatology, Keio University School of Medicine, Tokyo, Japan
| | - Akiharu Kubo
- Department of Dermatology, Keio University School of Medicine, Tokyo, Japan., Division of Dermatology, Department of Internal Related, Kobe University Graduate School of Medicine, Kobe, Japan
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Brandt E, Harjama L, Elomaa O, Saarela J, Donner K, Lappalainen K, Kivirikko S, Ranki A, Kere J, Kettunen K, Hannula-Jouppi K. A novel SERPINA12 variant and first European patients with diffuse palmoplantar keratoderma. J Eur Acad Dermatol Venereol 2024; 38:413-418. [PMID: 37684051 DOI: 10.1111/jdv.19498] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Accepted: 08/18/2023] [Indexed: 09/10/2023]
Abstract
BACKGROUND Hereditary palmoplantar keratodermas (hPPKs) comprise a heterogeneous group of skin disorders characterized by persistent palmoplantar hyperkeratosis. Loss-of-function variants in a serine peptidase inhibitor, SERPINA12, have recently been implicated in autosomal recessive diffuse hPPK. The disorder appears to share similarities with another hPPK associated with protease overactivity, namely Nagashima-type PPK (NPPK) caused by biallelic variants in SERPINB7. OBJECTIVES The aim of this study was to enhance the understanding of the clinical and genetic characteristics of serine protease-related hPPKs caused by variants in SERPINA12 and SERPINB7. METHODS Whole-exome sequencing (WES) was performed for hPPK patients. Haplotype analysis was completed for the patients with identified recessive SERPINA12 variants and their available family members. In addition, the current literature of SERPINA12- and SERPINB7-related hPPKs was summarized. RESULTS The phenotype of SERPINA12-related hPPK was confirmed by reporting three new SERPINA12 patients, the first of European origin. A novel SERPINA12 c.1100G>A p.(Gly367Glu) missense variant was identified confirming that the variant spectrum of SERPINA12 include both truncating and missense variants. The previously reported SERPINA12 c.631C>T p.(Arg211*) was indicated enriched in the Finnish population due to a plausible founder effect. In addition, SERPINA12 hPPK patients were shown to share a similar phenotype to patients with recessive variants in SERPINB7. The shared phenotype included diffuse transgradient PPK since birth or early childhood and frequent palmoplantar hyperhidrosis, aquagenic whitening and additional hyperkeratotic lesions in non-palmoplantar areas. SERPINA12 and SERPINB7 hPPK patients cannot be distinguished without genetic analysis. CONCLUSIONS Recessive variants in SERPINA12 and SERPINB7 leading to protease overactivity and hPPK produce a similar phenotype, indistinguishable without genetic analysis. SERPINA12 variants should be assessed also in non-Asian patients with diffuse transgradient PPK. Understanding the role of serine protease inhibitors will provide insights into the complex proteolytic network in epidermal homeostasis.
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Affiliation(s)
- E Brandt
- Department of Dermatology and Allergology, ERN-Skin Center, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
| | - L Harjama
- Department of Dermatology and Allergology, ERN-Skin Center, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
| | - O Elomaa
- Folkhälsan Research Center, Helsinki, Finland and Research Programs Unit, Stem Cells and Metabolism Research Program, University of Helsinki, Helsinki, Finland
| | - J Saarela
- Institute for Molecular Medicine Finland (FIMM), Helsinki Institute of Life Science (HiLIFE), University of Helsinki, Helsinki, Finland
- The Centre for Molecular Medicine Norway (NCMM), University of Oslo, Oslo, Norway
| | - K Donner
- Institute for Molecular Medicine Finland (FIMM), Helsinki Institute of Life Science (HiLIFE), University of Helsinki, Helsinki, Finland
| | - K Lappalainen
- Department of Dermatology and Allergology, ERN-Skin Center, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
| | - S Kivirikko
- Department of Clinical Genetics and Department of Medical and Clinical Genetics, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
| | - A Ranki
- Department of Dermatology and Allergology, ERN-Skin Center, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
| | - J Kere
- Folkhälsan Research Center, Helsinki, Finland and Research Programs Unit, Stem Cells and Metabolism Research Program, University of Helsinki, Helsinki, Finland
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
| | - K Kettunen
- Institute for Molecular Medicine Finland (FIMM), Helsinki Institute of Life Science (HiLIFE), University of Helsinki, Helsinki, Finland
- HUS Diagnostic Center, Division of Genetics and Clinical Pharmacology, Laboratory of Genetics, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - K Hannula-Jouppi
- Department of Dermatology and Allergology, ERN-Skin Center, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
- Folkhälsan Research Center, Helsinki, Finland and Research Programs Unit, Stem Cells and Metabolism Research Program, University of Helsinki, Helsinki, Finland
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Verkerk AJMH, Andrei D, Vermeer MCSC, Kramer D, Schouten M, Arp P, Verlouw JAM, Pas HH, Meijer HJ, van der Molen M, Oberdorf-Maass S, Nijenhuis M, Romero-Herrera PH, Hoes MF, Bremer J, Slotman JA, van den Akker PC, Diercks GFH, Giepmans BNG, Stoop H, Saris JJ, van den Ouweland AMW, Willemsen R, Hublin JJ, Dean MC, Hoogeboom AJM, Silljé HHW, Uitterlinden AG, van der Meer P, Bolling MC. Disruption of TUFT1, a Desmosome-Associated Protein, Causes Skin Fragility, Woolly Hair, and Palmoplantar Keratoderma. J Invest Dermatol 2024; 144:284-295.e16. [PMID: 37716648 DOI: 10.1016/j.jid.2023.02.044] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 06/24/2023] [Indexed: 09/18/2023]
Abstract
Desmosomes are dynamic complex protein structures involved in cellular adhesion. Disruption of these structures by loss-of-function variants in desmosomal genes leads to a variety of skin- and heart-related phenotypes. In this study, we report TUFT1 as a desmosome-associated protein, implicated in epidermal integrity. In two siblings with mild skin fragility, woolly hair, and mild palmoplantar keratoderma but without a cardiac phenotype, we identified a homozygous splice-site variant in the TUFT1 gene, leading to aberrant mRNA splicing and loss of TUFT1 protein. Patients' skin and keratinocytes showed acantholysis, perinuclear retraction of intermediate filaments, and reduced mechanical stress resistance. Immunolabeling and transfection studies showed that TUFT1 is positioned within the desmosome and that its location is dependent on the presence of the desmoplakin carboxy-terminal tail. A Tuft1-knockout mouse model mimicked the patients' phenotypes. Altogether, this study reveals TUFT1 as a desmosome-associated protein, whose absence causes skin fragility, woolly hair, and palmoplantar keratoderma.
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Affiliation(s)
- Annemieke J M H Verkerk
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands.
| | - Daniela Andrei
- Department of Dermatology, University of Groningen, University Medical Centre Groningen, Center of Expertise for Blistering Diseases, Groningen, The Netherlands
| | - Mathilde C S C Vermeer
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Duco Kramer
- Department of Dermatology, University of Groningen, University Medical Centre Groningen, Center of Expertise for Blistering Diseases, Groningen, The Netherlands
| | - Marloes Schouten
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Pascal Arp
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Joost A M Verlouw
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Hendri H Pas
- Department of Dermatology, University of Groningen, University Medical Centre Groningen, Center of Expertise for Blistering Diseases, Groningen, The Netherlands
| | - Hillegonda J Meijer
- Department of Dermatology, University of Groningen, University Medical Centre Groningen, Center of Expertise for Blistering Diseases, Groningen, The Netherlands
| | - Marije van der Molen
- Department of Dermatology, University of Groningen, University Medical Centre Groningen, Center of Expertise for Blistering Diseases, Groningen, The Netherlands
| | - Silke Oberdorf-Maass
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Miranda Nijenhuis
- Department of Dermatology, University of Groningen, University Medical Centre Groningen, Center of Expertise for Blistering Diseases, Groningen, The Netherlands
| | - Pedro H Romero-Herrera
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Martijn F Hoes
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Jeroen Bremer
- Department of Dermatology, University of Groningen, University Medical Centre Groningen, Center of Expertise for Blistering Diseases, Groningen, The Netherlands
| | - Johan A Slotman
- Optical Imaging Centre, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Peter C van den Akker
- Department of Genetics, University of Groningen, University Medical Centre Groningen, Center of Expertise for Blistering Diseases, Groningen, The Netherlands
| | - Gilles F H Diercks
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Ben N G Giepmans
- Department of Biomedical Sciences of Cells & Systems, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | - Hans Stoop
- Department of Pathology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Jasper J Saris
- Department of Clinical Genetics, Erasmus University Medical Center, Rotterdam, The Netherlands
| | | | - Rob Willemsen
- Department of Clinical Genetics, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Jean-Jacques Hublin
- Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany; Chaire de Paléoanthropologie, CIRB (UMR 7241 - U1050), Collège de France, Paris, France
| | - M Christopher Dean
- Centre for Human Origins Research, Natural History Museum, London, United Kingdom; Department of Cell and Developmental Biology, University College London, London, United Kingdom
| | - A Jeannette M Hoogeboom
- Department of Clinical Genetics, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Herman H W Silljé
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - André G Uitterlinden
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Peter van der Meer
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Maria C Bolling
- Department of Dermatology, University of Groningen, University Medical Centre Groningen, Center of Expertise for Blistering Diseases, Groningen, The Netherlands.
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Omi M, Takeichi T, Chiba T, Asano Y, Muro Y, Akiyama M. An in-frame 18 bp deletion in linker domain L1 of KRT9 identified in a Japanese patient with epidermolytic palmoplantar keratoderma. J Dermatol 2023; 50:e370-e372. [PMID: 37401035 DOI: 10.1111/1346-8138.16880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 06/15/2023] [Accepted: 06/17/2023] [Indexed: 07/05/2023]
Affiliation(s)
- Michiya Omi
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Takuya Takeichi
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Tomoko Chiba
- Department of Dermatology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yoshihide Asano
- Department of Dermatology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yoshinao Muro
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Masashi Akiyama
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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11
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Gram SB, Bjerrelund J, Jelsig AM, Bygum A, Leboeuf-Yde C, Ousager LB. Is punctate palmoplantar keratoderma type 1 associated with malignancy? A systematic review of the literature. Orphanet J Rare Dis 2023; 18:290. [PMID: 37705065 PMCID: PMC10500882 DOI: 10.1186/s13023-023-02862-8] [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: 02/07/2023] [Accepted: 08/20/2023] [Indexed: 09/15/2023] Open
Abstract
BACKGROUND An association between punctate palmoplantar keratoderma type 1 (PPPK1) and malignancy has been proposed for decades. Some authors suggest that individuals with PPPK1 should undergo screening for various types of malignancies while others caution that an association is not well-established. In this systematic review, we summarized and evaluated the current evidence for a possible association between PPPK1 and malignancy. METHODS The review was conducted along PRISMA guidelines. The search used Embase, MEDLINE, Scopus, and the Human Gene Mutation Database up to March 2022. All studies reporting on individuals with the diagnosis of PPPK1 with or without history of malignancy were included. Two authors screened for eligible studies, extracted predefined data, and performed a quality assessment. RESULTS Of 773 studies identified, 45 were included. Most studies were reports on single families (24 of 45 studies) or multiple families (10 of 45 studies). The number of index cases with PPPK1 across all included studies was 280, and when family members reported with PPPK1 were added, a total of 817 individuals were identified. Overall, 23 studies reported on individuals with PPPK1 with a history of malignancy, whereas 22 studies reported on individuals with PPPK1 without a history of malignancy. Although the extracted data were not considered to be of sufficient quality to synthesize and answer our research question, the review did not confirm an association between PPPK1 and malignancy. CONCLUSION This review shows that there is a lack of well-designed studies on this topic to conclude whether individuals with PPPK1 have an increased risk of malignancy. Based on the present literature, however, we could not confirm an association between PPPK1 and malignancy and find it highly questionable if patients with PPPK1 should be offered surveillance for malignancies.
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Affiliation(s)
- S B Gram
- Department of Clinical Genetics, Odense University Hospital, J.B. Winsløws Vej 4, Indgang 24, 5000, Odense C, Denmark.
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark.
| | - J Bjerrelund
- Department of Clinical Genetics, Odense University Hospital, J.B. Winsløws Vej 4, Indgang 24, 5000, Odense C, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - A M Jelsig
- Department of Clinical Genetics, Copenhagen University Hospital, Copenhagen, Denmark
| | - A Bygum
- Department of Clinical Genetics, Odense University Hospital, J.B. Winsløws Vej 4, Indgang 24, 5000, Odense C, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
- Hudklinikken Kolding, Kolding, Denmark
| | - C Leboeuf-Yde
- Institute for Regional Health Research, University of Southern Denmark, Odense, Denmark
| | - L B Ousager
- Department of Clinical Genetics, Odense University Hospital, J.B. Winsløws Vej 4, Indgang 24, 5000, Odense C, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
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12
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Nakamizo S, Murata T, Ishida Y, Aoki S, Sasaki T, Kubo A, Kabashima K. A Japanese case of Vörner-type palmoplantar keratoderma caused by a novel KRT1 variant. J Dermatol 2023; 50:e307-e308. [PMID: 37122192 DOI: 10.1111/1346-8138.16815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 04/10/2023] [Accepted: 04/13/2023] [Indexed: 05/02/2023]
Affiliation(s)
- Satoshi Nakamizo
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Teruasa Murata
- Department of Dermatology, Hyogo College of Medicine, Nishinomiya, Japan
| | - Yoshihiro Ishida
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Satomi Aoki
- Department of Dermatology, Keio University School of Medicine, Shinjuku, Japan
| | - Takashi Sasaki
- Center for Supercentenarian Medical Research, Keio University School of Medicine, Shinjuku, Japan
| | - Akiharu Kubo
- Department of Dermatology, Keio University School of Medicine, Shinjuku, Japan
- Division of Dermatology, Department of Internal Related, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Kenji Kabashima
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
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13
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Braun M, Choate KA, Mathes EF. Nagashima-type palmoplantar keratoderma: Case series and two novel variants. Pediatr Dermatol 2023; 40:882-885. [PMID: 36721328 DOI: 10.1111/pde.15265] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 01/14/2023] [Indexed: 02/02/2023]
Abstract
Nagashima-type palmoplantar keratoderma (PPK) is an autosomal recessive PPK. We report four patients, highlight two new genetic variants, and emphasize the possibility of misdiagnosing the condition. Concomitant atopic dermatitis, specifically, may make correct diagnosis challenging. Clinicians should consider the diagnosis of Nagashima-type PPK in patients presenting with mild PPK with transgrediens and understand the importance of individualized multimodal treatment regimens.
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Affiliation(s)
- Mitchell Braun
- University of California San Francisco School of Medicine, San Francisco, California, USA
| | - Keith A Choate
- Department of Dermatology, Genetics, and Pathology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Erin F Mathes
- Department of Dermatology, University of California San Francisco, San Francisco, California, USA
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14
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Genetic basis of a novel rare dominant form of palmoplantar keratoderma. Br J Dermatol 2023; 189:e66. [PMID: 37620022 DOI: 10.1093/bjd/ljad265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/26/2023]
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15
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Malovitski K, Sarig O, Feller Y, Bergson S, Assaf S, Mohamad J, Pavlovsky M, Giladi M, Sprecher E. Defective cathepsin Z affects EGFR expression and causes autosomal dominant palmoplantar keratoderma. Br J Dermatol 2023; 189:302-311. [PMID: 37210216 DOI: 10.1093/bjd/ljad167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 05/12/2023] [Accepted: 05/17/2023] [Indexed: 05/22/2023]
Abstract
BACKGROUND The abnormal function of epidermal growth factor receptor (EGFR) has recently been shown to underlie various disorders of cornification. OBJECTIVES To delineate the genetic basis of a novel dominant form of palmoplantar keratoderma (PPK). METHODS Whole-exome (WES) and direct sequencing, quantitative real-time polymerase chain reaction, protein modelling, confocal immunofluorescence microscopy, immunoblotting, three-dimensional skin equivalents and an enzyme activity assay were used to delineate the genetic basis of a novel dominant form of PPK. RESULTS WES revealed heterozygous variants (c.274T > C and c.305C > T) in CTSZ (encoding cathepsin Z) in four individuals (belonging to three unrelated families) with focal PPK. Bioinformatics and protein modelling predicted the variants to be pathogenic. Previous studies have suggested that EGFR expression may be subject to cathepsin regulation. Immunofluorescence revealed reduced cathepsin Z expression in the upper epidermal layers and concomitant increased epidermal EGFR expression in patients harbouring CTSZ variants. Accordingly, human keratinocytes transfected with constructs expressing PPK-causing variants in CTSZ displayed reduced cathepsin Z enzymatic activity, as well as increased EGFR expression. In line with the role played by EGFR in the regulation of keratinocyte proliferation, human keratinocytes transfected with the PPK-causing variants showed significantly increased proliferation that was abolished upon exposure to erlotinib, an EGFR inhibitor. Similarly, downregulation of CTSZ resulted in increased EGFR expression and increased proliferation in human keratinocytes, suggestive of a loss-of-function effect of the pathogenic variants. Finally, three-dimensional organotypic skin equivalents grown from CTSZ-downregulated cells showed increased epidermal thickness and EGFR expression as seen in patient skin; here, too, erlotinib was found to rescue the abnormal phenotype. CONCLUSIONS Taken collectively, these observations attribute to cathepsin Z a hitherto unrecognized function in epidermal differentiation.
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Affiliation(s)
- Kiril Malovitski
- Division of Dermatology
- Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | | | - Yarden Feller
- Division of Dermatology
- Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Shir Bergson
- Division of Dermatology
- Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Sari Assaf
- Division of Dermatology
- Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Janan Mohamad
- Division of Dermatology
- Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | | | - Moshe Giladi
- Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
- Department of Internal Medicine D, Tel Aviv Medical Center, Tel Aviv, Israel
| | - Eli Sprecher
- Division of Dermatology
- Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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16
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Rabinowitsch AI, Maretzky T, Weskamp G, Haxaire C, Tueshaus J, Lichtenthaler SF, Monette S, Blobel CP. Analysis of the function of ADAM17 in iRhom2 curly-bare and tylosis with esophageal cancer mutant mice. J Cell Sci 2023; 136:jcs260910. [PMID: 37282854 PMCID: PMC10357010 DOI: 10.1242/jcs.260910] [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: 12/21/2022] [Accepted: 05/31/2023] [Indexed: 06/08/2023] Open
Abstract
Tylosis with oesophageal cancer (TOC) is a rare familial disorder caused by cytoplasmic mutations in inactive rhomboid 2 (iRhom2 or iR2, encoded by Rhbdf2). iR2 and the related iRhom1 (or iR1, encoded by Rhbdf1) are key regulators of the membrane-anchored metalloprotease ADAM17, which is required for activating EGFR ligands and for releasing pro-inflammatory cytokines such as TNFα (or TNF). A cytoplasmic deletion in iR2, including the TOC site, leads to curly coat or bare skin (cub) in mice, whereas a knock-in TOC mutation (toc) causes less severe alopecia and wavy fur. The abnormal skin and hair phenotypes of iR2cub/cub and iR2toc/toc mice depend on amphiregulin (Areg) and Adam17, as loss of one allele of either gene rescues the fur phenotypes. Remarkably, we found that iR1-/- iR2cub/cub mice survived, despite a lack of mature ADAM17, whereas iR2cub/cub Adam17-/- mice died perinatally, suggesting that the iR2cub gain-of-function mutation requires the presence of ADAM17, but not its catalytic activity. The iR2toc mutation did not substantially reduce the levels of mature ADAM17, but instead affected its function in a substrate-selective manner. Our findings provide new insights into the role of the cytoplasmic domain of iR2 in vivo, with implications for the treatment of TOC patients.
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Affiliation(s)
- Ariana I. Rabinowitsch
- Tri-Institutional MD/PhD Program, Memorial Sloan Kettering Cancer Center, Weill Cornell Medicine, The Rockefeller University, New York, NY 10021, USA
- Program in Biochemistry, Cellular and Molecular Biology, Weill Cornell Medicine, New York, NY 10021, USA
| | - Thorsten Maretzky
- Inflammation Program and Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA
| | - Gisela Weskamp
- Arthritis and Tissue Degeneration Program, Hospital for Special Surgery, New York, NY 10021, USA
| | - Coline Haxaire
- Arthritis and Tissue Degeneration Program, Hospital for Special Surgery, New York, NY 10021, USA
| | - Johanna Tueshaus
- German Center for Neurodegenerative Diseases (DZNE), 81377 Munich, Germany
- Neuroproteomics, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, 81675 Munich, Germany
- Institute for Advanced Study, Technical University of Munich, 85748 Garching, Germany
| | - Stefan F. Lichtenthaler
- German Center for Neurodegenerative Diseases (DZNE), 81377 Munich, Germany
- Neuroproteomics, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, 81675 Munich, Germany
- Institute for Advanced Study, Technical University of Munich, 85748 Garching, Germany
- Munich Cluster for Systems Neurology (SyNergy), 81377 Munich, Germany
| | - Sébastien Monette
- Tri-Institutional Laboratory of Comparative Pathology, Hospital for Special Surgery, Memorial Sloan Kettering Cancer Center, The Rockefeller University, Weill Cornell Medicine, New York, NY 10021, USA
| | - Carl P. Blobel
- Tri-Institutional MD/PhD Program, Memorial Sloan Kettering Cancer Center, Weill Cornell Medicine, The Rockefeller University, New York, NY 10021, USA
- Arthritis and Tissue Degeneration Program, Hospital for Special Surgery, New York, NY 10021, USA
- Institute for Advanced Study, Technical University of Munich, 85748 Garching, Germany
- Department of Physiology, Biophysics and Systems Biology, Weill Cornell Medicine, New York, NY 10021, USA
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17
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Liu C, Han C, Liang J, Yang C, Wang Y, Chen P, Chen H, Lu H, Cai Y, Wang Q, Zhang X, Zeng K, Li C. Variants in the Gene Encoding Filaggrin Cause Autosomal-Dominant Symmetrical Acral Keratoderma. J Invest Dermatol 2023; 143:1313-1317.e8. [PMID: 36716921 DOI: 10.1016/j.jid.2023.01.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 01/03/2023] [Accepted: 01/10/2023] [Indexed: 01/29/2023]
Affiliation(s)
- Chenmei Liu
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Chunlei Han
- Department of Dermatology, the Sixth People's Hospital of Dongguan, Dongguan, China
| | - Jingyao Liang
- Department of Dermatology, Guangzhou Institute of Dermatology, Guangzhou, China
| | - Chao Yang
- Department of Dermatology, Dermatology Hospital, Southern Medical University, Guangzhou, China
| | - Youyi Wang
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Pingjiao Chen
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Hongyu Chen
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Hongyan Lu
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yan Cai
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Qi Wang
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xibao Zhang
- Department of Dermatology, Guangzhou Institute of Dermatology, Guangzhou, China
| | - Kang Zeng
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Changxing Li
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China.
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18
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Wang T, Tang Z, Xiao T, Ren J, He S, Liu Y, Xiao S, Wang X. Identification of a novel compound heterozygous mutation and a homozygous mutation of SLURP1 in Chinese families with Mal de Meleda. BMC Med Genomics 2023; 16:152. [PMID: 37393290 PMCID: PMC10314434 DOI: 10.1186/s12920-023-01580-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 10/10/2022] [Accepted: 06/13/2023] [Indexed: 07/03/2023] Open
Abstract
BACKGROUND Mal de Meleda is an autosomal recessive palmoplantar keratoderma, with SLURP1 identified as the pathogenic gene responsible. Although over 20 mutations in SLURP1 have been reported, only the mutation c.256G > A (p.G87R) has been detected in Chinese patients. Here, we report a novel heterozygous SLURP1 mutation in a Chinese family. METHODS We assessed the clinical manifestations of two Chinese patients with Mal de Meleda and collected specimens from the patients and other family members for whole-exome and Sanger sequencing. We used algorithms (MutationTaster, SIFT, PolyPhen-2, PROVEAN, PANTHER, FATHMM, mCSM, SDM and DUET) to predict the pathogenetic potential of the mutation detected. We also employed AlphaFold2 and PyMOL for protein structure analysis. RESULTS Both patients displayed the typical manifestation of palmoplantar keratoderma. In Proband 1, we detected a novel compound heterozygous mutation (c.243C > A and c.256G > A) in exon 3 of SLURP1. Proband 2 was an adult female born to a consanguineous family and carried a homozygous mutation (c.211C > T). Algorithms indicated both mutations to be probably disease causing. We used AlphaFold2 to predict the protein structure of these mutations and found that they cause instability, as shown by PyMOL. CONCLUSIONS Our study identified a novel compound heterozygous mutation (c.243C > A and c.256G > A) in a Chinese patient with Mal de Meleda that has the potential to cause instability in protein structure. Moreover, this study expands on the existing knowledge of SLURP1 mutations and contributes to knowledge of Mal de Meleda.
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Affiliation(s)
- Tian Wang
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, 157 Xiwu Road, Xi'an, 710004, China
| | - Zhuangli Tang
- Department of Dermatology, The Second Affiliated Hospital of Zhejiang University, Hangzhou, China
| | - Tong Xiao
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, 157 Xiwu Road, Xi'an, 710004, China
| | - Junru Ren
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, 157 Xiwu Road, Xi'an, 710004, China
| | - Shuyao He
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, 157 Xiwu Road, Xi'an, 710004, China
| | - Yan Liu
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, 157 Xiwu Road, Xi'an, 710004, China
| | - Shengxiang Xiao
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, 157 Xiwu Road, Xi'an, 710004, China.
| | - Xiaopeng Wang
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, 157 Xiwu Road, Xi'an, 710004, China.
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19
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Clabbers JMK, Bolling MC, Burms C, Vreeburg M, Lemmink HH, van den Akker PC, Steijlen PM, van Geel M, Gostyński AH. Palmoplantar keratoderma as a clinical feature of pathogenic variants in the filaggrin gene. J Eur Acad Dermatol Venereol 2023; 37:e486-e490. [PMID: 36308042 DOI: 10.1111/jdv.18699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 10/25/2022] [Indexed: 12/01/2022]
Affiliation(s)
- Julia M K Clabbers
- Department of Dermatology, Centre of Expertise for Genodermatoses, Maastricht University Medical Centre+, Maastricht, The Netherlands
- GROW School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands
- Department of Dermatology, Haga Hospital, The Hague, The Netherlands
| | - Marieke C Bolling
- Department of Dermatology, Centre of Expertise for Genodermatoses, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Charlotte Burms
- Department of Dermatology, Centre of Expertise for Genodermatoses, Maastricht University Medical Centre+, Maastricht, The Netherlands
- GROW School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands
| | - Maaike Vreeburg
- Department of Clinical Genetics, Centre of Expertise for Genodermatoses, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Henny H Lemmink
- Department of Genetics, Centre of Expertise for Genodermatoses, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Peter C van den Akker
- Department of Genetics, Centre of Expertise for Genodermatoses, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Peter M Steijlen
- Department of Dermatology, Centre of Expertise for Genodermatoses, Maastricht University Medical Centre+, Maastricht, The Netherlands
- GROW School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands
| | - Michel van Geel
- Department of Dermatology, Centre of Expertise for Genodermatoses, Maastricht University Medical Centre+, Maastricht, The Netherlands
- GROW School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands
- Department of Clinical Genetics, Centre of Expertise for Genodermatoses, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Antoni H Gostyński
- Department of Dermatology, Centre of Expertise for Genodermatoses, Maastricht University Medical Centre+, Maastricht, The Netherlands
- GROW School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands
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20
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Basset J, Marchal L, Hovnanian A. EGFR Signaling Is Overactive in Pachyonychia Congenita: Effective Treatment with Oral Erlotinib. J Invest Dermatol 2023; 143:294-304.e8. [PMID: 36116508 DOI: 10.1016/j.jid.2022.08.045] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 08/08/2022] [Accepted: 08/11/2022] [Indexed: 01/27/2023]
Abstract
Pachyonychia congenita (PC) is a rare keratinizing disorder characterized by painful palmoplantar keratoderma for which there is no standard current treatment. PC is caused by dominant mutations in keratin (K) K6A, K6B, K6C, K16, or K17 genes involved in stress, wound healing, and epidermal barrier formation. Mechanisms leading to pain and painful palmoplantar keratoderma in PC remain elusive. In this study, we show overexpression of EGFR ligands epiregulin and TGF-α as well as HER1‒EGFR and HER2 in the upper spinous layers of PC lesions. EGFR activation was confirmed by upregulated MAPK/ERK and mTOR signaling. Abnormal late terminal keratinization was associated with elevated TGM1 activity. In addition, the calcium ion permeable channel TRPV3 was significantly increased in PC-lesional skin, suggesting a predominant role of the TRPV3/EGFR signaling complex in PC. We hypothesized that this complex contributes to promoting TGM1 activity and induces the expression and shedding of EGFR ligands. To counteract this biological cascade, we treated three patients with PC with oral erlotinib for 6‒8 months. The treatment was well-tolerated and led to an early, drastic, and sustained reduction of neuropathic pain with a major improvement of QOL. Our study provides evidence that targeted pharmacological inhibition of EGFR is an effective strategy in PC.
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Affiliation(s)
- Justine Basset
- INSERM UMR 1163, Laboratory of Genetic Skin Diseases, Imagine Institute, Paris, France
| | - Lucile Marchal
- INSERM UMR 1163, Laboratory of Genetic Skin Diseases, Imagine Institute, Paris, France
| | - Alain Hovnanian
- INSERM UMR 1163, Laboratory of Genetic Skin Diseases, Imagine Institute, Paris, France; University of Paris, Paris, France; Department of Genetics, Necker Hospital for Sick Children. Assistance Publique des Hôpitaux de Paris (AP-HP), Paris, France.
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21
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Coulombe PA, Orosco A. Inhibiting EGFR Signaling Holds Promise for Treating Palmoplantar Keratodermas. J Invest Dermatol 2023; 143:185-188. [PMID: 36681421 PMCID: PMC10166065 DOI: 10.1016/j.jid.2022.09.653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 09/23/2022] [Indexed: 01/21/2023]
Affiliation(s)
- Pierre A Coulombe
- Department of Cell & Developmental Biology, University of Michigan Medical School, Ann Arbor, Michigan, USA; Department of Dermatology, University of Michigan Medical School, Ann Arbor, Michigan, USA; Rogel Cancer Center, University of Michigan Health, Ann Arbor, Michigan, USA.
| | - Amanda Orosco
- Department of Cell & Developmental Biology, University of Michigan Medical School, Ann Arbor, Michigan, USA; Training program in Cellular and Molecular Biology, University of Michigan Medical School, Ann Arbor, Michigan, USA
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22
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Shchagina O, Fedotov V, Markova T, Shatokhina O, Ryzhkova O, Fedotova T, Polyakov A. Palmoplantar Keratoderma: A Molecular Genetic Analysis of Family Cases. Int J Mol Sci 2022; 23:ijms23179576. [PMID: 36076978 PMCID: PMC9455982 DOI: 10.3390/ijms23179576] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/14/2022] [Accepted: 08/17/2022] [Indexed: 11/16/2022] Open
Abstract
Palmoplantar keratoderma is a clinically polymorphic disorder with a heterogeneous etiology characterized by marked hyperkeratotic lesions on the surface of palms and soles. Hereditary forms of palmoplantar keratoderma usually have autosomal dominant inheritance and are caused by mutations in dozens of genes, most of which belong to the keratin family. We carried out clinical and molecular genetic analysis of the affected and healthy members of four families with autosomal dominant palmoplantar keratoderma. In three out of four family cases of autosomal dominant palmoplantar keratoderma, the following molecular genetic causes were established: in two families—previously non-described missense mutations in the AQP5 gene (NM_001651.4): c.369C>G (p.(Asn123Lys)) and c.103T>G (p.(Trp35Gly)); in one family—a described splice site mutation in the KRT9 gene (NM_000226.4): c.31T>G. In one family, the possible cause of palmoplantar keratoderma was detected—a variant in the KRT1 gene (NM_006121.4): c.931G>A (p.(Glu311Lys)).
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Affiliation(s)
- Olga Shchagina
- Research Centre for Medical Genetics, Moskvorechye St., 1, 115522 Moscow, Russia
- Correspondence:
| | - Valeriy Fedotov
- Voronezh Regional Clinical Hospital №1, Moscow Avenue, 151, 394066 Voronezh, Russia
| | - Tatiana Markova
- Research Centre for Medical Genetics, Moskvorechye St., 1, 115522 Moscow, Russia
| | - Olga Shatokhina
- Research Centre for Medical Genetics, Moskvorechye St., 1, 115522 Moscow, Russia
| | - Oksana Ryzhkova
- Research Centre for Medical Genetics, Moskvorechye St., 1, 115522 Moscow, Russia
| | - Tatiana Fedotova
- Voronezh Regional Clinical Hospital №1, Moscow Avenue, 151, 394066 Voronezh, Russia
| | - Aleksander Polyakov
- Research Centre for Medical Genetics, Moskvorechye St., 1, 115522 Moscow, Russia
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Mandal KD, Shrestha PN, Ghimire A, Joshi P, Agrawal S, Shrestha P. Carvajal Syndrome- A Variant of Naxos Disease: A Case Report. JNMA J Nepal Med Assoc 2022; 60:187-191. [PMID: 35210635 PMCID: PMC9199993 DOI: 10.31729/jnma.7102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Indexed: 11/04/2022] Open
Abstract
Carvajal syndrome is a rare variant of Naxos disease, a recessive mutation of the desmoplakin gene characterized by presence of woolly hair, palmoplantar keratoderma and dilated cardiomyopathy, mainly left ventricular involvement. The main clinical complication is progressive heart disease which may lead to heart failure and sudden cardiac death in childhood and adolescence. Cardiomyopathy is diagnosed by Task Force Criteria. The goal of treatment is to prevent sudden cardiac death by lifestyle modification and regular clinical monitoring with pharmacotherapy. We report a nine years female who had skin and hair abnormality and was admitted with features of heart failure. She was clinically diagnosed as Carvajal syndrome, an under-recognized cardio cutaneous manifestation in children. Clinicians should be aware, if any child present with keratoderma of palm and soles with woolly hair since birth should evaluate for cardiomyopathy. Genetic tests should be done whenever available, for confirming the diagnosis and counseling.
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Affiliation(s)
- Krishna Deo Mandal
- Kanti Children's Hospital, Maharajgunj, Kathmandu, Nepal
- Correspondence: Dr Krishna Deo Mandal, Kanti Children's Hospital, Maharajgunj, Kathmandu, Nepal. , Phone: +977-9813078651
| | | | - Anjila Ghimire
- Kanti Children's Hospital, Maharajgunj, Kathmandu, Nepal
| | - Prakash Joshi
- Kanti Children's Hospital, Maharajgunj, Kathmandu, Nepal
| | - Sumit Agrawal
- Kanti Children's Hospital, Maharajgunj, Kathmandu, Nepal
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Li Z, Wang L, Wang S. Hyperpigmentation in a Chinese family with autosomal dominant Cole disease. Exp Dermatol 2022; 31:248-254. [PMID: 34297442 DOI: 10.1111/exd.14434] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 05/31/2021] [Revised: 07/06/2021] [Accepted: 07/17/2021] [Indexed: 02/05/2023]
Abstract
Cole disease (OMIM 615522), caused by mutations in ENPP1, is a rare autosomal dominant or recessive genodermatosis characterized by guttate hypopigmentation and punctate palmoplantar keratoderma. To date, a few cases with autosomal recessive inheritance had been reported with hyperpigmentation. The aim of this case report was to investigate the molecular basis of individuals with hyperpigmentation, hypopigmentation and punctate keratoderma in a Chinese family. A Chinese pedigree of suspected Cole disease with hyperpigmentation was subjected to mutation detection in the ENPP1 gene. All exons of the ENPP1 gene and adjacent exon-intron border sequences were amplified using polymerase chain reaction and directly sequenced. Three-dimensional (3D) models of the wild-type and mutated ENPP1 proteins were predicted by PyMOL viewer. Both of the proband and his affected father carried a heterozygous missense mutation p.C176R in ENPP1. In silico modelling of the ENPP1 wild-type and ENPP1 with the p.C176R mutation showed the residue Arg-176 disturbed the fold of the loop conformation. Based on clinical and genetic findings, a diagnosis of Cole disease was made. We identified a heterozygous mutation, p.C176R, in the ENPP1 gene in a Chinese family with Cole disease. This study clearly showed that hyperpigmentation could also occur in Cole disease in cases with autosomal dominant inheritance. Our data expand the phenotypic spectrum of ENPP1 mutations underlying Cole disease.
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Affiliation(s)
- Zhongtao Li
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
- Laboratory of Dermatology, Clinical Institute of Inflammation and Immunology (CIII), Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
| | - Lin Wang
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
- Laboratory of Dermatology, Clinical Institute of Inflammation and Immunology (CIII), Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
| | - Sheng Wang
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
- Laboratory of Dermatology, Clinical Institute of Inflammation and Immunology (CIII), Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
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Martens MC, Edelkamp J, Seebode C, Schäfer M, Stählke S, Krohn S, Jung O, Murua Escobar H, Emmert S, Boeckmann L. Generation and Characterization of a CRISPR/Cas9-Mediated SNAP29 Knockout in Human Fibroblasts. Int J Mol Sci 2021; 22:ijms22105293. [PMID: 34069872 PMCID: PMC8157373 DOI: 10.3390/ijms22105293] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/07/2021] [Accepted: 05/11/2021] [Indexed: 12/26/2022] Open
Abstract
Loss-of-function mutations in the synaptosomal-associated protein 29 (SNAP29) lead to the rare autosomal recessive neurocutaneous cerebral dysgenesis, neuropathy, ichthyosis, and keratoderma (CEDNIK) syndrome. SNAP29 is a soluble N-ethylmaleimide-sensitive factor attachment protein receptor (SNARE) protein. So far, it has been shown to be involved in membrane fusion, epidermal differentiation, formation of primary cilia, and autophagy. Recently, we reported the successful generation of two mouse models for the human CEDNIK syndrome. The aim of this investigation was the generation of a CRISPR/Cas9-mediated SNAP29 knockout (KO) in an immortalized human cell line to further investigate the role of SNAP29 in cellular homeostasis and signaling in humans independently of animal models. Comparison of different methods of delivery for CRISPR/Cas9 plasmids into the cell revealed that lentiviral transduction is more efficient than transfection methods. Here, we reported to the best of our knowledge the first successful generation of a CRISPR/Cas9-mediated SNAP29 KO in immortalized human MRC5Vi fibroblasts (c.169_196delinsTTCGT) via lentiviral transduction.
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Affiliation(s)
- Marie Christine Martens
- Clinic and Policlinic for Dermatology and Venerology, University Medical Center Rostock, 18057 Rostock, Germany; (M.C.M.); (J.E.); (C.S.); (M.S.); (O.J.); (S.E.)
| | - Janin Edelkamp
- Clinic and Policlinic for Dermatology and Venerology, University Medical Center Rostock, 18057 Rostock, Germany; (M.C.M.); (J.E.); (C.S.); (M.S.); (O.J.); (S.E.)
| | - Christina Seebode
- Clinic and Policlinic for Dermatology and Venerology, University Medical Center Rostock, 18057 Rostock, Germany; (M.C.M.); (J.E.); (C.S.); (M.S.); (O.J.); (S.E.)
| | - Mirijam Schäfer
- Clinic and Policlinic for Dermatology and Venerology, University Medical Center Rostock, 18057 Rostock, Germany; (M.C.M.); (J.E.); (C.S.); (M.S.); (O.J.); (S.E.)
| | - Susanne Stählke
- Department of Cell Biology, University Medical Center Rostock, 18057 Rostock, Germany;
| | - Saskia Krohn
- Clinic for Hematology, Oncology and Palliative Care, University Medical Center Rostock, 18057 Rostock, Germany; (S.K.); (H.M.E.)
| | - Ole Jung
- Clinic and Policlinic for Dermatology and Venerology, University Medical Center Rostock, 18057 Rostock, Germany; (M.C.M.); (J.E.); (C.S.); (M.S.); (O.J.); (S.E.)
| | - Hugo Murua Escobar
- Clinic for Hematology, Oncology and Palliative Care, University Medical Center Rostock, 18057 Rostock, Germany; (S.K.); (H.M.E.)
| | - Steffen Emmert
- Clinic and Policlinic for Dermatology and Venerology, University Medical Center Rostock, 18057 Rostock, Germany; (M.C.M.); (J.E.); (C.S.); (M.S.); (O.J.); (S.E.)
| | - Lars Boeckmann
- Clinic and Policlinic for Dermatology and Venerology, University Medical Center Rostock, 18057 Rostock, Germany; (M.C.M.); (J.E.); (C.S.); (M.S.); (O.J.); (S.E.)
- Correspondence:
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Rotunno R, Diociaiuti A, Dentici ML, Rinelli M, Callea M, Retrosi C, Zambruno G, Bellacchio E, El Hachem M. Ectodermal Dysplasia-Syndactyly Syndrome with Toe-Only Minimal Syndactyly Due to a Novel Mutation in NECTIN4: A Case Report and Literature Review. Genes (Basel) 2021; 12:748. [PMID: 34067522 PMCID: PMC8156511 DOI: 10.3390/genes12050748] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 05/11/2021] [Accepted: 05/13/2021] [Indexed: 11/16/2022] Open
Abstract
Ectodermal dysplasia-syndactyly syndrome 1 (EDSS1) is characterized by cutaneous syndactyly of the toes and fingers and abnormalities of the hair and teeth, variably associated with nail dystrophy and palmoplantar keratoderma (PPK). EDSS1 is caused by biallelic mutations in the NECTIN4 gene, encoding the adherens junction component nectin-4. Nine EDSS1 cases have been described to date. We report a 5.5-year-old female child affected with EDSS1 due to the novel homozygous frameshift mutation c.1150delC (p.Gln384ArgfsTer7) in the NECTIN4 gene. The patient presents brittle scalp hair, sparse eyebrows and eyelashes, widely spaced conical teeth and dental agenesis, as well as toenail dystrophy and mild PPK. She has minimal proximal syndactyly limited to toes 2-3, which makes the phenotype of our patient peculiar as the overt involvement of both fingers and toes is typical of EDSS1. All previously described mutations are located in the nectin-4 extracellular portion, whereas p.Gln384ArgfsTer7 occurs within the cytoplasmic domain of the protein. This mutation is predicted to affect the interaction with afadin, suggesting that impaired afadin activation is sufficient to determine EDSS1. Our case, which represents the first report of a NECTIN4 mutation with toe-only minimal syndactyly, expands the phenotypic and molecular spectrum of EDSS1.
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Affiliation(s)
- Roberta Rotunno
- Dermatology Unit and Genodermatosis Unit, Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, Piazza Sant’Onofrio 4, 00165 Rome, Italy; (R.R.); (C.R.); (M.E.H.)
| | - Andrea Diociaiuti
- Dermatology Unit and Genodermatosis Unit, Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, Piazza Sant’Onofrio 4, 00165 Rome, Italy; (R.R.); (C.R.); (M.E.H.)
| | - Maria Lisa Dentici
- Medical Genetics Unit, Bambino Gesù Children Hospital, IRCCS, Piazza Sant’Onofrio 4, 00165 Rome, Italy;
| | - Martina Rinelli
- Laboratory of Medical Genetics, Translational Cytogenomics Research Unit, Bambino Gesù Children’s Hospital, IRCCS, Piazza Sant’Onofrio 4, 00165 Rome, Italy;
| | - Michele Callea
- Dentistry Unit, Bambino Gesù Children Hospital, IRCCS, Piazza Sant’Onofrio 4, 00165 Rome, Italy;
| | - Chiara Retrosi
- Dermatology Unit and Genodermatosis Unit, Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, Piazza Sant’Onofrio 4, 00165 Rome, Italy; (R.R.); (C.R.); (M.E.H.)
| | - Giovanna Zambruno
- Genodermatosis Unit, Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, Piazza Sant’Onofrio 4, 00165 Rome, Italy;
| | - Emanuele Bellacchio
- Molecular Genetics and Functional Genomics Unit, Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, Piazza Sant’Onofrio 4, 00165 Rome, Italy;
| | - May El Hachem
- Dermatology Unit and Genodermatosis Unit, Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, Piazza Sant’Onofrio 4, 00165 Rome, Italy; (R.R.); (C.R.); (M.E.H.)
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Pessach Y, Jammal A, Gat A, Martinez H, Ellenbogen E, Sprecher E, Goldberg I. An Uncommon Presentation of Darier-White Disease with Hystrix-like Palmoplantar Keratoderma. Acta Dermatovenerol Croat 2021; 291:39-41. [PMID: 34477062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Darier-White disease is a relatively common autosomal dominant genodermatosis caused by mutation in the ATP2A2 gene. It is characterized by multiple warty papules coalescing into plaques in the seborrheic areas and by specific histological skin changes. Palm and sole involvement in Darier-White disease is usually mild, mainly featuring discrete and small keratotic papules. We present a unique case of Darier-White disease presenting with a diffuse, mutilating hystrix-like palmoplantar keratoderma.
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Affiliation(s)
| | | | | | | | | | | | - Ilan Goldberg
- Ilan Goldberg, MD, Department of Dermatology Tel-Aviv Sourasky Medical Center, 6 Weizmann Street, Tel-Aviv, Israel;
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Chao-Chu J, Murtough S, Zaman N, Pennington DJ, Blaydon DC, Kelsell DP. iRHOM2: A Regulator of Palmoplantar Biology, Inflammation, and Viral Susceptibility. J Invest Dermatol 2021; 141:722-726. [PMID: 33080304 PMCID: PMC7568177 DOI: 10.1016/j.jid.2020.09.010] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 09/21/2020] [Accepted: 09/22/2020] [Indexed: 12/04/2022]
Abstract
The palmoplantar epidermis is a specialized area of the skin that undergoes high levels of mechanical stress. The palmoplantar keratinization and esophageal cancer syndrome, tylosis with esophageal cancer, is linked to mutations in RHBDF2 encoding the proteolytically inactive rhomboid protein, iRhom2. Subsequently, iRhom2 was found to affect palmoplantar thickening to modulate the stress keratin response and to mediate context-dependent stress pathways by p63. iRhom2 is also a direct regulator of the sheddase, ADAM17, and the antiviral adaptor protein, stimulator of IFN genes. In this perspective, the pleiotropic functions of iRhom2 are discussed with respect to the skin, inflammation, and the antiviral response.
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Affiliation(s)
- Jennifer Chao-Chu
- Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Stephen Murtough
- Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Najwa Zaman
- Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Daniel J Pennington
- Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Diana C Blaydon
- Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - David P Kelsell
- Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom.
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Gómez-García AC, Salas-Alanís JC, Bar-Fernandez N, Mendoza-Meza R, Díaz-Montes SM, Fajardo-Ramírez OR. A novel AAGAB mutation in a Peruvian family with punctate palmoplantar keratoderma. Acta Dermatovenerol Alp Pannonica Adriat 2021; 30:47-48. [PMID: 33765759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Buschke-Fischer-Brauer (BFB) disease is a rare keratoderma characterized by multiple hyperkeratotic lesions on the palms and soles, with an autosomal dominant pattern. In several countries, some genetic alterations have been associated with this clinical entity. A 68-year-old Peruvian woman presenting with hyperkeratotic lesions on both her palms and soles was diagnosed with BFB keratoderma. After sequencing of the genes that had previously been related to this disease, a mutation (c.249C>G) that was predicted to generate a termination codon (Tyr83*) was found in the alpha and gamma adaptin binding protein P34 gene (AAGAB). After treatment with 30% urea plus 10% salicylic acid, the patient experienced an improvement in her condition. Here we report a novel mutation in the AAGAB gene of a patient diagnosed with BFB keratoderma and a treatment that improved her symptoms.
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Affiliation(s)
| | - Julio C Salas-Alanís
- Jalisco Dermatological Institute, Guadalajara, Mexico
- Secretary of Health of the State of Nuevo León, Monterrey, Mexico
| | | | | | | | - Oscar R Fajardo-Ramírez
- Instituto Tecnológico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Monterrey, Mexico
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Li Y, Yu X, Pan C, Wang Y, Han J, Yao Z, Li M. Effect of Gentamicin Ointment in Patients with Nagashima-type Palmoplantar Keratosis: A Double-blind Vehicle-controlled Study. Acta Derm Venereol 2021; 101:adv00392. [PMID: 33554268 PMCID: PMC9366704 DOI: 10.2340/00015555-3760] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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] [Indexed: 11/16/2022] Open
Abstract
Gentamicin ointment has potential in the treatment of Nagashima-type palmoplantar keratosis. However, there is a lack of reliable study data. The aim of this study was to perform a prospective, randomized, double-blinded, contralateral, vehicle-controlled clinical trial. A total of 20 subjects diagnosed with Nagashima-type palmoplantar keratosis by genetic test, who carried nonsense mutations, enrolled in the 30-day study. Gentamicin ointment was applied to the hand and foot on one side of the body, and vehicle ointment was applied to the hand and foot on the other side. The choice of hand and foot in each subject was randomly allocated. The severity of the patient’s skin lesions and quality of life were assessed by a blinded evaluator, using the Dermatology Life Quality Index, visual analogue scale scores and digital photography. Gentamicin ointment treatment resulted in a significant improvement in symptoms of hyperkeratosis and foul smell compared with vehicle. No difference was found in the effect on erythema between gentamicin and vehicle. In conclusion, gentamicin ointment demonstrated positive responses and good tolerance in treating Nagashima-type palmoplantar keratosis caused by nonsense mutations.
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Affiliation(s)
- Yue Li
- Departments of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, 200092 Shanghai, China
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Bedoukian EC, Rentas S, Skraban C, Shao Q, Treat J, Laird DW, Sullivan KE. Palmoplantar keratoderma with deafness phenotypic variability in a patient with an inherited GJB2 frameshift variant and novel missense variant. Mol Genet Genomic Med 2021; 9:e1574. [PMID: 33443819 PMCID: PMC8077155 DOI: 10.1002/mgg3.1574] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 11/06/2020] [Accepted: 11/20/2020] [Indexed: 11/20/2022] Open
Abstract
Background Variants in the GJB2 gene encoding the gap junction protein connexin‐26 (Cx26) can cause autosomal recessive nonsyndromic hearing loss or a variety of phenotypically variable autosomal dominant disorders that effect skin and hearing, such as palmoplantar keratoderma (PPK) with deafness and keratitis–ichthyosis–deafness (KID) syndrome. Here, we report a patient with chronic mucocutaneous candidiasis, hyperkeratosis with resorption of the finger tips, profound bilateral sensorineural hearing loss, and normal hair and ocular examination. Exome analysis identified a novel missense variant in GJB2 (NM_004004.5:c.101T>A, p.Met34Lys) that was inherited from a mosaic unaffected parent in the setting of a well‐reported GJB2 loss of function variant (NM_004004.5:c.35delG, p.Gly12Valfs*2) on the other allele. Method Rat epidermal keratinocytes were transfected with cDNA encoding wildtype Cx26 and/or the Met34Lys mutant of Cx26. Fixed cells were immunolabeled in order to assess the subcellular location of the Cx26 mutant and cell images were captured. Results Expression in rat epidermal keratinocytes revealed that the Met34Lys mutant was retained in the endoplasmic reticulum, unlike wildtype Cx26, and failed to reach the plasma membrane to form gap junctions. Additionally, the Met34Lys mutant acted dominantly to wildtype Cx26, restricting its delivery to the cell surface. Conclusion Overall, we show the p.Met34Lys variant is a novel dominant acting variant causing PPK with deafness. The presence of a loss a function variant on the other allele creates a more severe clinical phenotype, with some features reminiscent of KID syndrome.
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Affiliation(s)
- Emma C. Bedoukian
- Roberts Individualized Medical Genetics CenterChildren's Hospital of PhiladelphiaPhiladelphiaPAUSA
| | - Stefan Rentas
- Division of Genomic DiagnosticsChildren's Hospital of PhiladelphiaPhiladelphiaPAUSA
| | - Cara Skraban
- Roberts Individualized Medical Genetics CenterChildren's Hospital of PhiladelphiaPhiladelphiaPAUSA
| | - Qing Shao
- Department of Anatomy and Cell BiologyUniversity of Western OntarioLondonONCanada
| | - James Treat
- Department of DermatologyChildren's Hospital of PhiladelphiaPhiladelphiaPAUSA
| | - Dale W. Laird
- Department of Anatomy and Cell BiologyUniversity of Western OntarioLondonONCanada
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Lee TL, Lin PH, Chen PL, Hong JB, Wu CC. Hereditary Hearing Impairment with Cutaneous Abnormalities. Genes (Basel) 2020; 12:43. [PMID: 33396879 PMCID: PMC7823799 DOI: 10.3390/genes12010043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 11/21/2020] [Revised: 12/25/2020] [Accepted: 12/26/2020] [Indexed: 12/15/2022] Open
Abstract
Syndromic hereditary hearing impairment (HHI) is a clinically and etiologically diverse condition that has a profound influence on affected individuals and their families. As cutaneous findings are more apparent than hearing-related symptoms to clinicians and, more importantly, to caregivers of affected infants and young individuals, establishing a correlation map of skin manifestations and their underlying genetic causes is key to early identification and diagnosis of syndromic HHI. In this article, we performed a comprehensive PubMed database search on syndromic HHI with cutaneous abnormalities, and reviewed a total of 260 relevant publications. Our in-depth analyses revealed that the cutaneous manifestations associated with HHI could be classified into three categories: pigment, hyperkeratosis/nail, and connective tissue disorders, with each category involving distinct molecular pathogenesis mechanisms. This outline could help clinicians and researchers build a clear atlas regarding the phenotypic features and pathogenetic mechanisms of syndromic HHI with cutaneous abnormalities, and facilitate clinical and molecular diagnoses of these conditions.
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Affiliation(s)
- Tung-Lin Lee
- Department of Medical Education, National Taiwan University Hospital, Taipei City 100, Taiwan;
| | - Pei-Hsuan Lin
- Department of Otolaryngology, National Taiwan University Hospital, Taipei 11556, Taiwan;
- Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei City 100, Taiwan;
| | - Pei-Lung Chen
- Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei City 100, Taiwan;
- Graduate Institute of Medical Genomics and Proteomics, National Taiwan University College of Medicine, Taipei City 100, Taiwan
- Department of Medical Genetics, National Taiwan University Hospital, Taipei 10041, Taiwan
- Department of Internal Medicine, National Taiwan University Hospital, Taipei 10041, Taiwan
| | - Jin-Bon Hong
- Graduate Institute of Medical Genomics and Proteomics, National Taiwan University College of Medicine, Taipei City 100, Taiwan
- Department of Dermatology, National Taiwan University Hospital, Taipei City 100, Taiwan
| | - Chen-Chi Wu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei 11556, Taiwan;
- Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei City 100, Taiwan;
- Department of Medical Genetics, National Taiwan University Hospital, Taipei 10041, Taiwan
- Department of Medical Research, National Taiwan University Biomedical Park Hospital, Hsinchu City 300, Taiwan
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Akaji K, Arase N, Peh JT, Kiyohara E, Murota H, Nomura T, Fujimoto M. First case of symmetrical acral keratoderma in Japan with filaggrin mutation who showed marked improvement in skin manifestations using moisturizer. J Dermatol 2020; 47:e291-e293. [PMID: 32424884 DOI: 10.1111/1346-8138.15410] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Kazuya Akaji
- Department of Dermatology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Noriko Arase
- Department of Dermatology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Jin Teng Peh
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Eiji Kiyohara
- Department of Dermatology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Hiroyuki Murota
- Department of Dermatology, Osaka University Graduate School of Medicine, Suita, Japan
- Department of Dermatology, Nagasaki University Graduate School of Medicine, Nagasaki, Japan
| | - Toshifumi Nomura
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Manabu Fujimoto
- Department of Dermatology, Osaka University Graduate School of Medicine, Suita, Japan
- Laboratory of Cutaneous Immunology, WPI Immunology Frontier Research Center, Osaka University, Suita, Japan
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Abstract
Inherited monogenic palmoplantar keratodermas are a heterogeneous group of conditions characterised by persistent epidermal thickening of the palmoplantar skin. Palmoplantar keratodermas are grouped depending on the morphology of the keratoderma into diffuse, focal/striate or papular/punctate. Some palmoplantar keratodermas just affect the skin of the palms and soles and others have associated syndromic features which include changes in hair, teeth, nails, hearing loss or cardiomyopathy. Next generation sequencing has helped discover genes involved in many of these conditions and has led to reclassification of some palmoplantar keratodermas. In this review, we discuss the diagnostic features of palmoplantar keratodermas and management options.
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Zieman AG, Coulombe PA. Pathophysiology of pachyonychia congenita-associated palmoplantar keratoderma: new insights into skin epithelial homeostasis and avenues for treatment. Br J Dermatol 2020; 182:564-573. [PMID: 31021398 PMCID: PMC6814456 DOI: 10.1111/bjd.18033] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/22/2019] [Indexed: 12/20/2022]
Abstract
BACKGROUND Pachyonychia congenita (PC), a rare genodermatosis, primarily affects ectoderm-derived epithelial appendages and typically includes oral leukokeratosis, nail dystrophy and very painful palmoplantar keratoderma (PPK). PC dramatically impacts quality of life although it does not affect lifespan. PC can arise from mutations in any of the wound-repair-associated keratin genes KRT6A, KRT6B, KRT6C, KRT16 or KRT17. There is no cure for this condition, and current treatment options for PC symptoms are limited and palliative in nature. OBJECTIVES This review focuses on recent progress made towards understanding the pathophysiology of PPK lesions, the most prevalent and debilitating of all PC symptoms. METHODS We reviewed the relevant literature with a particular focus on the Krt16 null mouse, which spontaneously develops footpad lesions that mimic several aspects of PC-associated PPK. RESULTS There are three main stages of progression of PPK-like lesions in Krt16 null mice. Ahead of lesion onset, keratinocytes in the palmoplantar (footpad) skin exhibit specific defects in terminal differentiation, including loss of Krt9 expression. At the time of PPK onset, there is elevated oxidative stress and hypoactive Keap1-Nrf2 signalling. During active PPK, there is a profound defect in the ability of the epidermis to maintain or return to normal homeostasis. CONCLUSIONS The progress made suggests new avenues to explore for the treatment of PC-based PPK and deepens our understanding of the mechanisms controlling skin tissue homeostasis. What's already known about this topic? Pachyonychia congenita (PC) is a rare genodermatosis caused by mutations in KRT6A, KRT6B, KRT6C, KRT16 and KRT17, which are normally expressed in skin appendages and induced following injury. Individuals with PC present with multiple clinical symptoms that usually include thickened and dystrophic nails, palmoplantar keratoderma (PPK), glandular cysts and oral leukokeratosis. The study of PC pathophysiology is made challenging because of its low incidence and high complexity. There is no cure or effective treatment for PC. What does this study add? This text reviews recent progress made when studying the pathophysiology of PPK associated with PC. This recent progress points to new possibilities for devising effective therapeutics that may complement current palliative strategies.
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Affiliation(s)
- A. G. Zieman
- Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - P. A. Coulombe
- Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
- Department of Dermatology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
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Juratli HA, Jägle S, Happle R, Avci P, Didona D, Fischer J. A Family with Palmar and Plantar Hyperkeratosis: A Quiz. Acta Derm Venereol 2020; 100:adv00064. [PMID: 32052849 PMCID: PMC9128890 DOI: 10.2340/00015555-3419] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
is missing (Quiz).
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Affiliation(s)
- Hazem A Juratli
- Department of Dermatology and Allergology, Philipp University, DE-35043 Marburg, Germany.
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Harjama L, Kettunen K, Elomaa O, Einarsdottir E, Heikkilä H, Kivirikko S, Lappalainen K, Saarela J, Alby C, Ranki A, Kere J, Hadj-Rabia S, Hannula-Jouppi K. Phenotypic Variability with SLURP1 Mutations and Diffuse Palmoplantar Keratoderma. Acta Derm Venereol 2020; 100:adv00060. [PMID: 31944258 PMCID: PMC9128877 DOI: 10.2340/00015555-3404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/09/2020] [Indexed: 11/16/2022] Open
Affiliation(s)
- Liisa Harjama
- Department of Dermatology and Allergology, University of Helsinki and Helsinki University Central Hospital, 00029 HUS, Helsinki, Finland.
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Katayama S, Nomura T, Takeda M, Miyauchi T, Suzuki S, Peh JT, Nohara T, Kitamura S, Hata H, Shimizu H. A Case of Malignant Melanoma Arising in Nagashima-type Palmoplantar Keratosis. Acta Derm Venereol 2019; 99:1311-1312. [PMID: 31573665 DOI: 10.2340/00015555-3326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Sho Katayama
- Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, 0608638 Sapporo, Japan
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Hannula-Jouppi K, Harjama L, Einarsdottir E, Elomaa O, Kettunen K, Saarela J, Soronen M, Bouchard L, Lappalainen K, Heikkilä H, Kivirikko S, Seppänen MRJ, Kere J, Ranki A. Nagashima-type palmoplantar keratosis in Finland caused by a SERPINB7 founder mutation. J Am Acad Dermatol 2019; 83:643-645. [PMID: 31706940 DOI: 10.1016/j.jaad.2019.11.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 10/31/2019] [Accepted: 11/04/2019] [Indexed: 11/18/2022]
Affiliation(s)
- Katariina Hannula-Jouppi
- Department of Dermatology, Skin and Allergy Hospital, University of Helsinki, ERN-skin, and Helsinki University Hospital, Helsinki, Finland; Folkhälsan Research Center, Helsinki, and Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland; Folkhälsan Institute of Genetics, Helsinki, and Research Programs Unit, Molecular Neurology, University of Helsinki, Helsinki, Finland.
| | - Liisa Harjama
- Department of Dermatology, Skin and Allergy Hospital, University of Helsinki, ERN-skin, and Helsinki University Hospital, Helsinki, Finland
| | - Elisabet Einarsdottir
- Folkhälsan Research Center, Helsinki, and Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland; Folkhälsan Institute of Genetics, Helsinki, and Research Programs Unit, Molecular Neurology, University of Helsinki, Helsinki, Finland; Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden; Science for Life Laboratory, Department of Gene Technology, KTH-Royal Institute of Technology, Solna, Sweden
| | - Outi Elomaa
- Folkhälsan Research Center, Helsinki, and Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland; Folkhälsan Institute of Genetics, Helsinki, and Research Programs Unit, Molecular Neurology, University of Helsinki, Helsinki, Finland
| | - Kaisa Kettunen
- Institute for Molecular Medicine Finland (FIMM), Helsinki Institute of Life Science (HiLIFE), University of Helsinki, Helsinki, Finland; Laboratory of Genetics, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Janna Saarela
- Institute for Molecular Medicine Finland (FIMM), Helsinki Institute of Life Science (HiLIFE), University of Helsinki, Helsinki, Finland; Centre for Molecular Medicine Norway (NCMM), University of Oslo, Oslo, Norway
| | - Minna Soronen
- PEDEGO Research Unit, University of Oulu and the Department of Dermatology and Medical Research Center Oulu, Oulu University Hospital, Oulu, Finland
| | - Laura Bouchard
- Department of Dermatology, Skin and Allergy Hospital, University of Helsinki, ERN-skin, and Helsinki University Hospital, Helsinki, Finland
| | - Katriina Lappalainen
- Department of Dermatology, Skin and Allergy Hospital, University of Helsinki, ERN-skin, and Helsinki University Hospital, Helsinki, Finland
| | - Hannele Heikkilä
- Department of Dermatology, Skin and Allergy Hospital, University of Helsinki, ERN-skin, and Helsinki University Hospital, Helsinki, Finland
| | - Sirpa Kivirikko
- Departments of Clinical Genetics and Medical and Clinical Genetics, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Mikko R J Seppänen
- Rare Disease Center, New Children's Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Juha Kere
- Folkhälsan Research Center, Helsinki, and Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland; Folkhälsan Institute of Genetics, Helsinki, and Research Programs Unit, Molecular Neurology, University of Helsinki, Helsinki, Finland; Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden; School of Basic and Medical Biosciences, King's College London, London, United Kingdom
| | - Annamari Ranki
- Department of Dermatology, Skin and Allergy Hospital, University of Helsinki, ERN-skin, and Helsinki University Hospital, Helsinki, Finland
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Jafar Hussain HM, Khan R, Li C, Aftab A, Muneer I, Wahab F, Wu L, Jiang X, Xu P. In-silico Analyses of Disease Causing Mutations in SLURP1 Gene. Ann Clin Lab Sci 2019; 49:710-721. [PMID: 31882421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The SLURP1 (secreted LY6/urokinase type plasminogen activator receptor related protein-1) belongs to the gene family of urokinase, a type of plasminogen activator receptor (uPAR). Mutations in the SLURP1 have been reported to cause serious genetic problems of skin, Mal De Meleda, and malignancies. With the advancement of computational tools, it became possible to predict the potential impact of gene variants on the structure and function of protein. Therefore, in present study, we aimed to perform in-silico analyses of the disease causing SLURP1 mutations using online tools. In-total, 21 variants occurring in coding and non-coding regions of SLURP1 were found from public databases. In curated data, we have found 57.14% (12/21) missense, 23.81% (5/21) splice site, 9.52% (2/21) nonsense, 4.76% (1/21) deletion, and 4.76% (1/21) frameshift mutations. Moreover, heterogeneity in genotypes and phenotypes, along with 7 hotspot points in SLURP1 has been noted. In-silico analyses of the subjected variants have depicted a range of pathogenicity by combinatorial predictions of different tools from being lowly to highly pathogenic. Thus, the present study paves a platform to link computational analyses of mutations for important regulatory genes that can be undertaken for their phenotypes and their correlation with the disease status in case control studies.
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Affiliation(s)
- Hafiz Muhammad Jafar Hussain
- The First Affiliated Hospital of USTC, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China
| | - Ranjha Khan
- The First Affiliated Hospital of USTC, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China
| | - Chunyi Li
- Shenyang Dongfang Jinghua Hospital, Shenyang, Liaoning, China
| | - Ayesha Aftab
- Department of Bioinformatics & Biotechnology, International Islamic University, Islamabad, Pakistan
| | - Iqra Muneer
- Laboratory of Computational Biology, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China
| | - Fazal Wahab
- The First Affiliated Hospital of USTC, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China
| | - Limin Wu
- The First Affiliated Hospital of USTC, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China
| | - Xiaohua Jiang
- The First Affiliated Hospital of USTC, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China
- Shenyang Dongfang Jinghua Hospital, Shenyang, Liaoning, China
| | - Peng Xu
- Shenyang Dongfang Jinghua Hospital, Shenyang, Liaoning, China
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42
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Guerra L, Bergamo F, D'Apice MR, Angelucci F, di Girolamo S, Camerota L, Monetta R, Annessi G, Castiglia D, Novelli G, Paradisi M, Brancati F. Keratoderma-Deafness-Mucocutaneous Syndrome Associated with Phe142Leu in the GJB2 Gene. Acta Derm Venereol 2019; 99:1192-1194. [PMID: 31408183 DOI: 10.2340/00015555-3291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Liliana Guerra
- Laboratory of Molecular and Cell Biology, Istituto Dermopatico dell'Immacolata, IDI-IRCCS, Via dei Monti di Creta, 104, IT-00167 Rome, Italy
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43
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Keser V, Lachance JFB, Alam SS, Lim Y, Scarlata E, Kaur A, Zhang TF, Lv S, Lachapelle P, O’Flaherty C, Golden JA, Jerome-Majewska LA. Snap29 mutant mice recapitulate neurological and ophthalmological abnormalities associated with 22q11 and CEDNIK syndrome. Commun Biol 2019; 2:375. [PMID: 31633066 PMCID: PMC6789041 DOI: 10.1038/s42003-019-0601-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 04/27/2019] [Accepted: 08/30/2019] [Indexed: 12/24/2022] Open
Abstract
Synaptosomal-associated protein 29 (SNAP29) encodes a member of the SNARE family of proteins implicated in numerous intracellular protein trafficking pathways. SNAP29 maps to the 22q11.2 region and is deleted in 90% of patients with 22q11.2 deletion syndrome (22q11.2DS). Moreover, bi-allelic SNAP29 mutations in patients are responsible for CEDNIK (cerebral dysgenesis, neuropathy, ichthyosis, and keratoderma) syndrome. A mouse model that recapitulates abnormalities found in these syndromes is essential for uncovering the cellular basis of these disorders. In this study, we report that mice with a loss of function mutation of Snap29 on a mixed CD1;FvB genetic background recapitulate skin abnormalities associated with CEDNIK, and also phenocopy neurological and ophthalmological abnormalities found in CEDNIK and a subset of 22q11.2DS patients. Our work also reveals an unanticipated requirement for Snap29 in male fertility and supports contribution of hemizygosity for SNAP29 to the phenotypic spectrum of abnormalities found in 22q11.2DS patients.
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Affiliation(s)
- Vafa Keser
- Department of Human Genetics, McGill University, Montreal, QC H4A 3J1 Canada
| | | | | | - Youngshin Lim
- Department of Pathology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115 USA
| | - Eleonora Scarlata
- Department of Pharmacology and Therapeutics, McGill University, Montreal, QC H4A 3J1 Canada
- Department of Surgery (Urology Division), McGill University, Montreal, QC H4A 3J1 Canada
| | - Apinder Kaur
- Department of Human Genetics, McGill University, Montreal, QC H4A 3J1 Canada
| | - Tian Fang Zhang
- Department of Ophthalmology & Visual Sciences, McGill University Health Centre at Glen Site, Montreal, QC H4A 3J1 Canada
| | - Shasha Lv
- Department of Ophthalmology & Visual Sciences, McGill University Health Centre at Glen Site, Montreal, QC H4A 3J1 Canada
| | - Pierre Lachapelle
- Department of Ophthalmology & Visual Sciences, McGill University Health Centre at Glen Site, Montreal, QC H4A 3J1 Canada
| | - Cristian O’Flaherty
- Department of Pharmacology and Therapeutics, McGill University, Montreal, QC H4A 3J1 Canada
- Department of Surgery (Urology Division), McGill University, Montreal, QC H4A 3J1 Canada
| | - Jeffrey A. Golden
- Department of Pathology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115 USA
| | - Loydie A. Jerome-Majewska
- Department of Human Genetics, McGill University, Montreal, QC H4A 3J1 Canada
- Department of Anatomy and Cell Biology, McGill University Health Centre at Glen Site, Montreal, QC H4A 3J1 Canada
- Department of Pediatrics, McGill University, Montreal, QC H4A 3J1 Canada
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44
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Gulbranson DR, Crisman L, Lee M, Ouyang Y, Menasche BL, Demmitt BA, Wan C, Nomura T, Ye Y, Yu H, Shen J. AAGAB Controls AP2 Adaptor Assembly in Clathrin-Mediated Endocytosis. Dev Cell 2019; 50:436-446.e5. [PMID: 31353312 DOI: 10.1016/j.devcel.2019.06.013] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [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: 12/19/2018] [Revised: 04/29/2019] [Accepted: 06/20/2019] [Indexed: 12/26/2022]
Abstract
Multimeric adaptors are broadly involved in vesicle-mediated membrane trafficking. AP2 adaptor, in particular, plays a central role in clathrin-mediated endocytosis (CME) by recruiting cargo and clathrin to endocytic sites. It is generally thought that trafficking adaptors such as AP2 adaptor assemble spontaneously. In this work, however, we discovered that AP2 adaptor assembly is an ordered process controlled by alpha and gamma adaptin binding protein (AAGAB), an uncharacterized factor identified in our genome-wide genetic screen of CME. AAGAB guides the sequential association of AP2 subunits and stabilizes assembly intermediates. Without the assistance of AAGAB, AP2 subunits fail to form the adaptor complex, leading to their degradation. The function of AAGAB is abrogated by a mutation that causes punctate palmoplantar keratoderma type 1 (PPKP1), a human skin disease. Since other multimeric trafficking adaptors operate in an analogous manner to AP2 adaptor, their assembly likely involves a similar regulatory mechanism.
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Affiliation(s)
- Daniel R Gulbranson
- Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder, CO 80309, USA
| | - Lauren Crisman
- Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder, CO 80309, USA
| | - MyeongSeon Lee
- Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder, CO 80309, USA
| | - Yan Ouyang
- Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder, CO 80309, USA
| | - Bridget L Menasche
- Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder, CO 80309, USA
| | - Brittany A Demmitt
- Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder, CO 80309, USA; Institute for Behavioral Genetics, University of Colorado, Boulder, CO 80309, USA
| | - Chun Wan
- Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder, CO 80309, USA
| | - Toshifumi Nomura
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Yihong Ye
- Laboratory of Molecular Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Haijia Yu
- Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder, CO 80309, USA; Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China.
| | - Jingshi Shen
- Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder, CO 80309, USA.
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45
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Guerra L, Magliozzi M, Baban A, Di Mambro C, Di Zenzo G, Novelli A, El Hachem M, Zambruno G, Castiglia D. Palmoplantar Keratoderma and Woolly Hair Revealing Asymptomatic Arrhythmogenic Cardiomyopathy. Acta Derm Venereol 2019; 99:831-832. [PMID: 31073624 DOI: 10.2340/00015555-3216] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Liliana Guerra
- Laboratory of Molecular and Cell Biology, Istituto Dermopatico dell'Immacolata, IDI-IRCCS, Via dei Monti di Creta, 104, IT-00167 Rome, Italy.
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46
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Qu L, Sha S, Zou QL, Gao XH, Xiao T, Chen HD, He CC. Whole Exome Sequencing Identified a Novel Mutation of the RHBDF2 Gene in a Chinese Family of Tylosis with Esophageal Cancer. Acta Derm Venereol 2019; 99:699-700. [PMID: 30938830 DOI: 10.2340/00015555-3189] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Le Qu
- Department of Dermatology, The First Hospital of China Medical University, 110001 Shenyang, China
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47
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Mastrodonato V, Beznoussenko G, Mironov A, Ferrari L, Deflorian G, Vaccari T. A genetic model of CEDNIK syndrome in zebrafish highlights the role of the SNARE protein Snap29 in neuromotor and epidermal development. Sci Rep 2019; 9:1211. [PMID: 30718891 PMCID: PMC6361908 DOI: 10.1038/s41598-018-37780-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [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: 08/16/2018] [Accepted: 12/06/2018] [Indexed: 12/25/2022] Open
Abstract
Homozygous mutations in SNAP29, encoding a SNARE protein mainly involved in membrane fusion, cause CEDNIK (Cerebral Dysgenesis, Neuropathy, Ichthyosis and Keratoderma), a rare congenital neurocutaneous syndrome associated with short life expectancy, whose pathogenesis is unclear. Here, we report the analysis of the first genetic model of CEDNIK in zebrafish. Strikingly, homozygous snap29 mutant larvae display CEDNIK-like features, such as microcephaly and skin defects. Consistent with Snap29 role in membrane fusion during autophagy, we observe accumulation of the autophagy markers p62 and LC3, and formation of aberrant multilamellar organelles and mitochondria. Importantly, we find high levels of apoptotic cell death during early development that might play a yet uncharacterized role in CEDNIK pathogenesis. Mutant larvae also display mouth opening problems, feeding impairment and swimming difficulties. These alterations correlate with defective trigeminal nerve formation and excess axonal branching. Since the paralog Snap25 is known to promote axonal branching, Snap29 might act in opposition with, or modulate Snap25 activity during neurodevelopment. Our vertebrate genetic model of CEDNIK extends the description in vivo of the multisystem defects due to loss of Snap29 and could provide the base to test compounds that might ameliorate traits of the disease.
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Affiliation(s)
- Valeria Mastrodonato
- IFOM, The FIRC Institute of Molecular Oncology, via Adamello 16, 20139, Milan, Italy
- University of Milan, Department of Biosciences, Via Celoria 26, 20133, Milan, Italy
| | - Galina Beznoussenko
- IFOM, The FIRC Institute of Molecular Oncology, via Adamello 16, 20139, Milan, Italy
| | - Alexandre Mironov
- IFOM, The FIRC Institute of Molecular Oncology, via Adamello 16, 20139, Milan, Italy
| | - Laura Ferrari
- IEO, European Institute of Oncology, via Adamello 16, 20139, Milan, Italy
| | - Gianluca Deflorian
- IFOM, The FIRC Institute of Molecular Oncology, via Adamello 16, 20139, Milan, Italy.
| | - Thomas Vaccari
- University of Milan, Department of Biosciences, Via Celoria 26, 20133, Milan, Italy.
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48
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Zimmermann CE, Soufi M, Ruppert V, Schaefer JR, von Domarus H. Schöpf-Schulz-Passarge Syndrome: Previously Unreported WNT10A Genotype and Phenotypes in 9 Family Members. Acta Derm Venereol 2019; 99:113-114. [PMID: 30265373 DOI: 10.2340/00015555-3055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Corinna E Zimmermann
- Clinic of Oral and Maxillofacial Surgery, OMFS Clinic, DE-23552 Lübeck, Germany.
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Youssefian L, Vahidnezhad H, Saeidian AH, Mahmoudi H, Karamzadeh R, Kariminejad A, Huang J, Li L, Jannace TF, Fortina P, Zeinali S, White TW, Uitto J. A novel autosomal recessive GJB2-associated disorder: Ichthyosis follicularis, bilateral severe sensorineural hearing loss, and punctate palmoplantar keratoderma. Hum Mutat 2018; 40:217-229. [PMID: 30431684 DOI: 10.1002/humu.23686] [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] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 10/26/2018] [Accepted: 10/30/2018] [Indexed: 11/07/2022]
Abstract
Ichthyosis follicularis, a distinct cutaneous entity reported in combination with atrichia, and photophobia has been associated with mutations in MBTPS2. We sought the genetic cause of a novel syndrome of ichthyosis follicularis, bilateral severe sensorineural hearing loss and punctate palmoplantar keratoderma in two families. We performed whole exome sequencing on three patients from two families. The pathogenicity and consequences of mutations were studied in the Xenopus oocyte expression system and by molecular modeling analysis. Compound heterozygous mutations in the GJB2 gene were discovered: a pathogenic c.526A>G; p.Asn176Asp, and a common frameshift mutation, c.35delG; p.Gly12Valfs*2. The p.Asn176Asp missense mutation was demonstrated to significantly reduce the cell-cell gap junction channel activity and increase the nonjunctional hemichannel activity in the Xenopus oocyte expression system. Molecular modeling analyses of the mutant Cx26 protein revealed significant changes in the structural characteristics and electrostatic potential of the Cx26, either in hemichannel or gap junction conformation. Thus, association of a new syndrome of an autosomal recessive disorder of ichthyosis follicularis, bilateral severe sensorineural hearing loss and punctate palmoplantar keratoderma with mutations in GJB2, expands the phenotypic spectrum of the GJB2-associated disorders. The findings attest to the complexity of the clinical consequences of different mutations in GJB2.
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Affiliation(s)
- Leila Youssefian
- Department of Dermatology and Cutaneous Biology, Sidney Kimmel Medical College, Jefferson Institute of Molecular Medicine, Thomas Jefferson University, Philadelphia, PA, USA
- Department of Medical Genetics, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Genetics, Genomics and Cancer Biology PhD Program, Thomas Jefferson University, Philadelphia, PA, USA
| | - Hassan Vahidnezhad
- Department of Dermatology and Cutaneous Biology, Sidney Kimmel Medical College, Jefferson Institute of Molecular Medicine, Thomas Jefferson University, Philadelphia, PA, USA
- Biotechnology Research Center, Department of Molecular Medicine, Pasteur Institute of Iran, Tehran, Iran
| | - Amir Hossein Saeidian
- Department of Dermatology and Cutaneous Biology, Sidney Kimmel Medical College, Jefferson Institute of Molecular Medicine, Thomas Jefferson University, Philadelphia, PA, USA
- Genetics, Genomics and Cancer Biology PhD Program, Thomas Jefferson University, Philadelphia, PA, USA
| | - Hamidreza Mahmoudi
- Department of Dermatology, Razi Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Razieh Karamzadeh
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | | | - Jianhe Huang
- Department of Dermatology and Cutaneous Biology, Sidney Kimmel Medical College, Jefferson Institute of Molecular Medicine, Thomas Jefferson University, Philadelphia, PA, USA
| | - Leping Li
- Department of Physiology and Biophysics, Stony Brook University, Stony Brook, NY, USA
| | - Thomas F Jannace
- Department of Physiology and Biophysics, Stony Brook University, Stony Brook, NY, USA
| | - Paolo Fortina
- Department of Cancer Biology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA
- Department of Molecular Medicine, Sapienza University, Rome, Italy
| | - Sirous Zeinali
- Biotechnology Research Center, Department of Molecular Medicine, Pasteur Institute of Iran, Tehran, Iran
| | - Thomas W White
- Department of Physiology and Biophysics, Stony Brook University, Stony Brook, NY, USA
| | - Jouni Uitto
- Department of Dermatology and Cutaneous Biology, Sidney Kimmel Medical College, Jefferson Institute of Molecular Medicine, Thomas Jefferson University, Philadelphia, PA, USA
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Abstract
Vohwinkel syndrome belongs to the group of hereditary palmoplantar keratoderma, having an autosomal dominant inheritance. In this report, the authors present a case of a four-year-old boy with diffuse scaling over his entire body and transgredient palmoplantar hyperkeratosis with some fissured areas. Family evaluation revealed that his mother and other family members were affected. Based on his clinical findings and on family history, the diagnosis of the ichthyotic Vohwinkel syndrome subtype, characterized by generalized ichthyosis and palmoplantar hyperkeratosis, was established.
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Affiliation(s)
| | - Juliano Peruzzo
- Department of Dermatology, Hospital de Clínicas de Porto
Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre (RS), Brazil
| | - Tania Cestari
- Department of Dermatology, Hospital de Clínicas de Porto
Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre (RS), Brazil
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