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Danyukova T, Alimy AR, Velho RV, Yorgan TA, Di Lorenzo G, von Kroge S, Tidow H, Wiegert JS, Hermans-Borgmeyer I, Schinke T, Rolvien T, Pohl S. Mice heterozygous for an osteogenesis imperfecta-linked MBTPS2 variant display a compromised subchondral osteocyte lacunocanalicular network associated with abnormal articular cartilage. Bone 2023; 177:116927. [PMID: 37797712 DOI: 10.1016/j.bone.2023.116927] [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: 08/03/2023] [Revised: 09/20/2023] [Accepted: 10/02/2023] [Indexed: 10/07/2023]
Abstract
Missense variants in the MBTPS2 gene, located on the X chromosome, have been associated with an X-linked recessive form of osteogenesis imperfecta (X-OI), an inherited bone dysplasia characterized by multiple and recurrent bone fractures, short stature, and various skeletal deformities in affected individuals. The role of site-2 protease, encoded by MBTPS2, and the molecular pathomechanism underlying the disease are to date elusive. This study is the first to report on the generation of two Mbtps2 mouse models, a knock-in mouse carrying one of the disease-causative MBTPS2 variants (N455S) and a Mbtps2 knock-out (ko) mouse. Because both loss-of-function variants lead to embryonic lethality in hemizygous male mutant mice, we performed a comprehensive skeletal analysis of heterozygous Mbtps2+/N455S and Mbtps2+/ko female mice. Both models displayed osteochondral abnormalities such as thinned subchondral bone, altered subchondral osteocyte interconnectivity as well as thickened articular cartilage with chondrocyte clustering, altogether resembling an early osteoarthritis (OA) phenotype. However, distant from the joints, no alterations in the bone mass and turnover could be detected in either of the mutant mice. Based on our findings we conclude that MBTPS2 haploinsufficiency results in early OA-like alterations in the articular cartilage and underlying subchondral bone, which likely precede the development of typical OI phenotype in bone. Our study provides first evidence for a potential role of site-2 protease for maintaining homeostasis of both bone and cartilage.
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Affiliation(s)
- Tatyana Danyukova
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Assil-Ramin Alimy
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Renata Voltolini Velho
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Timur A Yorgan
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Giorgia Di Lorenzo
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Simon von Kroge
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany; Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Henning Tidow
- The Hamburg Advanced Research Center for Bioorganic Chemistry (HARBOR), Department of Chemistry, Institute for Biochemistry and Molecular Biology, University of Hamburg, 20146 Hamburg, Germany.
| | - J Simon Wiegert
- Center for Molecular Neurobiology Hamburg, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany.
| | - Irm Hermans-Borgmeyer
- Center for Molecular Neurobiology Hamburg, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Thorsten Schinke
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Tim Rolvien
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Sandra Pohl
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
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2
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Lim PJ, Marcionelli G, Srikanthan P, Ndarugendamwo T, Pinner J, Rohrbach M, Giunta C. Perturbations in fatty acid metabolism and collagen production infer pathogenicity of a novel MBTPS2 variant in Osteogenesis imperfecta. Front Endocrinol (Lausanne) 2023; 14:1195704. [PMID: 37305034 PMCID: PMC10248412 DOI: 10.3389/fendo.2023.1195704] [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] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 05/09/2023] [Indexed: 06/13/2023] Open
Abstract
Osteogenesis imperfecta (OI) is a heritable and chronically debilitating skeletal dysplasia. Patients with OI typically present with reduced bone mass, tendency for recurrent fractures, short stature and bowing deformities of the long bones. Mutations causative of OI have been identified in over 20 genes involved in collagen folding, posttranslational modification and processing, and in bone mineralization and osteoblast development. In 2016, we described the first X-linked recessive form of OI caused by MBTPS2 missense variants in patients with moderate to severe phenotypes. MBTPS2 encodes site-2 protease, a Golgi transmembrane protein that activates membrane-tethered transcription factors. These transcription factors regulate genes involved in lipid metabolism, bone and cartilage development, and ER stress response. The interpretation of genetic variants in MBTPS2 is complicated by the gene's pleiotropic properties; MBTPS2 variants can also cause the dermatological conditions Ichthyosis Follicularis, Atrichia and Photophobia (IFAP), Keratosis Follicularis Spinulosa Decalvans (KFSD) and Olmsted syndrome (OS) without skeletal abnormalities typical of OI. Using control and patient-derived fibroblasts, we previously identified gene expression signatures that distinguish MBTPS2-OI from MBTPS2-IFAP/KFSD and observed stronger suppression of genes involved in fatty acid metabolism in MBTPS2-OI than in MBTPS2-IFAP/KFSD; this was coupled with alterations in the relative abundance of fatty acids in MBTPS2-OI. Furthermore, we observed a reduction in collagen deposition in the extracellular matrix by MBTPS2-OI fibroblasts. Here, we extrapolate our observations in the molecular signature unique to MBTPS2-OI to infer the pathogenicity of a novel MBTPS2 c.516A>C (p.Glu172Asp) variant of unknown significance in a male proband. The pregnancy was terminated at gestational week 21 after ultrasound scans showed bowing of femurs and tibiae and shortening of long bones particularly of the lower extremity; these were further confirmed by autopsy. By performing transcriptional analyses, gas chromatography-tandem mass spectrometry-based quantification of fatty acids and immunocytochemistry on fibroblasts derived from the umbilical cord of the proband, we observed perturbations in fatty acid metabolism and collagen production similar to what we previously described in MBTPS2-OI. These findings support pathogenicity of the MBTPS2 variant p.Glu172Asp as OI-causative and highlights the value of extrapolating molecular signatures identified in multiomics studies to characterize novel genetic variants.
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Affiliation(s)
- Pei Jin Lim
- Connective Tissue Unit, Division of Metabolism and Children’s Research Center, University Children’s Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Giulio Marcionelli
- Connective Tissue Unit, Division of Metabolism and Children’s Research Center, University Children’s Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Pakeerathan Srikanthan
- Department of Clinical Chemistry and Biochemistry, University Children’s Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Timothée Ndarugendamwo
- Connective Tissue Unit, Division of Metabolism and Children’s Research Center, University Children’s Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Jason Pinner
- Centre for Clinical Genetics, Sydney Children’s Hospital, Sydney, Australia
- UNSW Medicine and Health, University of New South Wales, Sydney, Australia
| | - Marianne Rohrbach
- Connective Tissue Unit, Division of Metabolism and Children’s Research Center, University Children’s Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Cecilia Giunta
- Connective Tissue Unit, Division of Metabolism and Children’s Research Center, University Children’s Hospital Zurich and University of Zurich, Zurich, Switzerland
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3
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Kalinovskii AP, Utkina LL, Korolkova YV, Andreev YA. TRPV3 Ion Channel: From Gene to Pharmacology. Int J Mol Sci 2023; 24:ijms24108601. [PMID: 37239947 DOI: 10.3390/ijms24108601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 05/07/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Transient receptor potential vanilloid subtype 3 (TRPV3) is an ion channel with a sensory function that is most abundantly expressed in keratinocytes and peripheral neurons. TRPV3 plays a role in Ca2+ homeostasis due to non-selective ionic conductivity and participates in signaling pathways associated with itch, dermatitis, hair growth, and skin regeneration. TRPV3 is a marker of pathological dysfunctions, and its expression is increased in conditions of injury and inflammation. There are also pathogenic mutant forms of the channel associated with genetic diseases. TRPV3 is considered as a potential therapeutic target of pain and itch, but there is a rather limited range of natural and synthetic ligands for this channel, most of which do not have high affinity and selectivity. In this review, we discuss the progress in the understanding of the evolution, structure, and pharmacology of TRPV3 in the context of the channel's function in normal and pathological states.
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Affiliation(s)
- Aleksandr P Kalinovskii
- Department of Molecular Neurobiology, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences (IBCh RAS), 16/10 Miklukho-Maklay Str., 117997 Moscow, Russia
| | - Lyubov L Utkina
- Institute of Molecular Medicine, Sechenov First Moscow State Medical University, Trbetskaya Str. 8, Bld. 2, 119991 Moscow, Russia
| | - Yuliya V Korolkova
- Department of Molecular Neurobiology, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences (IBCh RAS), 16/10 Miklukho-Maklay Str., 117997 Moscow, Russia
| | - Yaroslav A Andreev
- Department of Molecular Neurobiology, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences (IBCh RAS), 16/10 Miklukho-Maklay Str., 117997 Moscow, Russia
- Institute of Molecular Medicine, Sechenov First Moscow State Medical University, Trbetskaya Str. 8, Bld. 2, 119991 Moscow, Russia
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4
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Chen G, Wang M, Wang P, Liang B. An intronic splice‐site variant in
MBTPS2
underlies ichthyosis follicularis with atrichia and photophobia syndrome. J Dermatol 2022; 50:715-719. [PMID: 36539961 DOI: 10.1111/1346-8138.16684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 11/24/2022] [Accepted: 12/01/2022] [Indexed: 12/24/2022]
Abstract
Ichthyosis follicularis with atrichia and photophobia (IFAP) syndrome is a rare genodermatosis characterized by a classic triad of follicular ichthyosis, alopecia, and photophobia. We report a Chinese patient displaying features of IFAP triad along with painful palmoplantar keratoderma, recurrent infections, periorificial keratotic plaques, nail dystrophy, and pachyonychia. Whole-exome sequencing revealed an intronic variant (NM_015884.3: exon7:c.970+5G>A) in the gene MBTPS2. Sanger sequencing confirmed that the variant segerated with phenotype in the family. Sequencing of cDNAs derived from the patient indicated the variant introduced a new splice donor site, leading to partial skipping of exon 7 (r.951_970del). An in vitro mini-gene assay also revealed abnormal splicing of exon 7. This study presents a case complicated with X-linked IFAP syndrome and Olmsted syndrome, and highlights the significance of using validation assays to identify the pathogenicity of intronic variants in MBTPS2.
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Affiliation(s)
- Gang Chen
- Department of Dermatology and Venereology The First Affiliated Hospital, Anhui Medical University Hefei China
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province Anhui Medical University Hefei China
- Key Laboratory of Dermatology (Anhui Medical University) Ministry of Education Hefei China
| | - Mengwei Wang
- Key Laboratory of Dermatology (Anhui Medical University) Ministry of Education Hefei China
| | - Peiguang Wang
- Department of Dermatology and Venereology The First Affiliated Hospital, Anhui Medical University Hefei China
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province Anhui Medical University Hefei China
- Key Laboratory of Dermatology (Anhui Medical University) Ministry of Education Hefei China
| | - Bo Liang
- Department of Dermatology and Venereology The First Affiliated Hospital, Anhui Medical University Hefei China
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province Anhui Medical University Hefei China
- Key Laboratory of Dermatology (Anhui Medical University) Ministry of Education Hefei China
- Department of Clinical Laboratory The First Affiliated Hospital, Anhui Medical University Hefei China
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5
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Hellicar J, Stevenson NL, Stephens DJ, Lowe M. Supply chain logistics - the role of the Golgi complex in extracellular matrix production and maintenance. J Cell Sci 2022; 135:273996. [PMID: 35023559 PMCID: PMC8767278 DOI: 10.1242/jcs.258879] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The biomechanical and biochemical properties of connective tissues are determined by the composition and quality of their extracellular matrix. This, in turn, is highly dependent on the function and organisation of the secretory pathway. The Golgi complex plays a vital role in directing matrix output by co-ordinating the post-translational modification and proteolytic processing of matrix components prior to their secretion. These modifications have broad impacts on the secretion and subsequent assembly of matrix components, as well as their function in the extracellular environment. In this Review, we highlight the role of the Golgi in the formation of an adaptable, healthy matrix, with a focus on proteoglycan and procollagen secretion as example cargoes. We then discuss the impact of Golgi dysfunction on connective tissue in the context of human disease and ageing.
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Affiliation(s)
- John Hellicar
- School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, The Michael Smith Building, Oxford Road, Manchester, M13 9PT, UK.,Institute of Molecular and Cell Biology (IMCB), Agency for Science, Technology and Research (A*STAR), 61 Biopolis Drive, Proteos, Singapore, 138673
| | - Nicola L Stevenson
- Cell Biology Laboratories, School of Biochemistry, Faculty of Life Sciences, University Walk, University of Bristol, Bristol, BS8 1TD, UK
| | - David J Stephens
- Cell Biology Laboratories, School of Biochemistry, Faculty of Life Sciences, University Walk, University of Bristol, Bristol, BS8 1TD, UK
| | - Martin Lowe
- School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, The Michael Smith Building, Oxford Road, Manchester, M13 9PT, UK
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6
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Strong A, March ME, Cardinale CJ, Kim SE, Merves J, Whitworth H, Raffini L, Larosa C, Copelovitch L, Hou C, Slater D, Vaccaro C, Watson D, Zackai EH, Billheimer J, Hakonarson H. A novel MBTPS2 variant associated with BRESHECK syndrome impairs sterol-regulated transcription and the endoplasmic reticulum stress response. Am J Med Genet A 2021; 188:463-472. [PMID: 34655156 PMCID: PMC9293288 DOI: 10.1002/ajmg.a.62537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/22/2021] [Accepted: 09/29/2021] [Indexed: 11/11/2022]
Abstract
Ichthyosis follicularis, atrichia, and photophobia syndrome (IFAP syndrome) is a rare, X-linked disorder caused by pathogenic variants in membrane-bound transcription factor protease, site 2 (MBTPS2). Pathogenic MBTPS2 variants also cause BRESHECK syndrome, characterized by the IFAP triad plus intellectual disability and multiple congenital anomalies. Here we present a patient with ichthyosis, sparse hair, pulmonic stenosis, kidney dysplasia, hypospadias, growth failure, thrombocytopenia, anemia, bone marrow fibrosis, and chronic diarrhea found by research-based exome sequencing to harbor a novel, maternally inherited MBTPS2 missense variant (c.766 G>A; (p.Val256Leu)). In vitro modeling supports variant pathogenicity, with impaired cell growth in cholesterol-depleted media, attenuated activation of the sterol regulatory element-binding protein pathway, and failure to activate the endoplasmic reticulum stress response pathway. Our case expands both the genetic and phenotypic spectrum of BRESHECK syndrome to include a novel MBTPS2 variant and cytopenias, bone marrow fibrosis, and chronic diarrhea.
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Affiliation(s)
- Alanna Strong
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,The Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Michael E March
- The Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Christopher J Cardinale
- The Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Sophia E Kim
- The Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Jamie Merves
- Division of Gastroenterology, Hepatology and Nutrition, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Hilary Whitworth
- Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Leslie Raffini
- Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Christopher Larosa
- Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Division of Nephrology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Lawrence Copelovitch
- Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Division of Nephrology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Cuiping Hou
- The Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Diana Slater
- The Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Courtney Vaccaro
- The Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Deborah Watson
- The Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Elaine H Zackai
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Jeffrey Billheimer
- Division of Translational Medicine and Human Genetics, Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Hakon Hakonarson
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,The Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Division of Pulmonary Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
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7
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Danyukova T, Schöneck K, Pohl S. Site-1 and site-2 proteases: A team of two in regulated proteolysis. Biochim Biophys Acta Mol Cell Res 2021; 1869:119138. [PMID: 34619164 DOI: 10.1016/j.bbamcr.2021.119138] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 08/12/2021] [Accepted: 09/06/2021] [Indexed: 12/19/2022]
Abstract
The site-1 and site-2 proteases (S1P and S2P) were identified over 20 years ago, and the functions of both have been addressed in numerous studies ever since. Whereas S1P processes a set of substrates independently of S2P, the latter acts in concert with S1P in a mechanism, called regulated intramembrane proteolysis, that controls lipid metabolism and response to unfolded proteins. This review summarizes the molecular roles that S1P and S2P jointly play in these processes. As S1P and S2P deficiencies mainly affect connective tissues, yet with varying phenotypes, we discuss the segregated functions of S1P and S2P in terms of cell homeostasis and maintenance of the connective tissues. In addition, we provide experimental data that point at S2P, but not S1P, as a critical regulator of cell adaptation to proteotoxicity or lipid imbalance. Therefore, we hypothesize that S2P can also function independently of S1P activity.
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Affiliation(s)
- Tatyana Danyukova
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany.
| | - Kenneth Schöneck
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany
| | - Sandra Pohl
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany
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8
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Caengprasath N, Theerapanon T, Porntaveetus T, Shotelersuk V. MBTPS2, a membrane bound protease, underlying several distinct skin and bone disorders. J Transl Med 2021; 19:114. [PMID: 33743732 PMCID: PMC7981912 DOI: 10.1186/s12967-021-02779-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [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: 01/16/2021] [Accepted: 03/08/2021] [Indexed: 12/27/2022] Open
Abstract
The MBTPS2 gene on the X-chromosome encodes the membrane-bound transcription factor protease, site-2 (MBTPS2) or site-2 protease (S2P) which cleaves and activates several signaling and regulatory proteins from the membrane. The MBTPS2 is critical for a myriad of cellular processes, ranging from the regulation of cholesterol homeostasis to unfolded protein responses. While its functional role has become much clearer in the recent years, how mutations in the MBTPS2 gene lead to several human disorders with different phenotypes including Ichthyosis Follicularis, Atrichia and Photophobia syndrome (IFAP) with or without BRESHECK syndrome, Keratosis Follicularis Spinulosa Decalvans (KFSD), Olmsted syndrome, and Osteogenesis Imperfecta type XIX remains obscure. This review presents the biological role of MBTPS2 in development, summarizes its mutations and implicated disorders, and discusses outstanding unanswered questions.
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Affiliation(s)
- Natarin Caengprasath
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
- Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, 10330, Thailand
| | - Thanakorn Theerapanon
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Thantrira Porntaveetus
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand.
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
- Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, 10330, Thailand
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9
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Zhong W, Hu L, Cao X, Zhao J, Zhang X, Lee M, Wang H, Zhang J, Chen Q, Feng C, Duo L, Wang X, Tang L, Lin Z, Yang Y. Genotype‒Phenotype Correlation of TRPV3-Related Olmsted Syndrome. J Invest Dermatol 2020; 141:545-554. [PMID: 32795529 DOI: 10.1016/j.jid.2020.06.035] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 05/08/2020] [Accepted: 06/07/2020] [Indexed: 11/15/2022]
Abstract
We have previously shown that gain-of-function variations in transient receptor potential vanilloid-3 (TRPV3) underlay Olmsted syndrome, a rare hyperkeratotic skin channelopathy. In this study, we attempt to establish a genotype‒phenotype correlation in Olmsted syndrome, which has been unclear owing to the rarity and heterogeneity of the condition. We identified five previously unreported TRPV3 variations (R416Q, R416W, L655P, W692S, and L694P) and three recurrent variations (G568D, G568V, and L673F) in nine unrelated patients. Seven variants were expressed in human embryonic kidney 293 cells, and channel behavior was characterized electrophysiologically, with results compared with the clinical severity. These variant TRPV3 channels, in either homomeric or heteromeric form, exhibited differentially elevated basal open probability, increased voltage sensitivity, and cytotoxicity. Functional changes were particularly pronounced in variants corresponding to severer Olmsted syndrome (e.g., L673F and W692S) but not in mild Olmsted syndrome variants (e.g., R416Q). Interestingly, the extent of functional rescue by wild-type TRPV3 in vitro was also consistent with the clinical severity of the variants. These findings, in combination with all reported cases, indicate a preliminary genotype‒phenotype correlation, that is, variations in the S4‒S5 linker and transient receptor potential domain of TRPV3 significantly enhance channel function, causing severe phenotype, whereas other variations appear to exert milder effects on channel function and disease phenotype.
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Affiliation(s)
- Weilong Zhong
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Peking University First Hospital, Beijing, China; Department of Dermatology, Peking University Shenzhen Hospital, Shenzhen, China
| | - Linghan Hu
- Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Peking University First Hospital, Beijing, China; Peking-Tsinghua Center for Life Sciences, Beijing, China; Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China
| | - Xu Cao
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Peking University First Hospital, Beijing, China; Peking-Tsinghua Center for Life Sciences, Beijing, China
| | - Jiahui Zhao
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Peking University First Hospital, Beijing, China
| | - Xianning Zhang
- Department of Genetics, Institute of Genetics, Institute of Cell Biology, Zhejiang University School of Medicine, Hangzhou, China
| | - Mingyang Lee
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Peking University First Hospital, Beijing, China
| | - Huijun Wang
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Peking University First Hospital, Beijing, China; Peking-Tsinghua Center for Life Sciences, Beijing, China; Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China
| | - Jie Zhang
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Peking University First Hospital, Beijing, China
| | - Quan Chen
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Peking University First Hospital, Beijing, China
| | - Cheng Feng
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Peking University First Hospital, Beijing, China
| | - Lina Duo
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Peking University First Hospital, Beijing, China
| | - Xiuli Wang
- Institute of Photomedicine, Shanghai Skin Disease Hospital, Shanghai, China
| | - Li Tang
- Institute of Photomedicine, Shanghai Skin Disease Hospital, Shanghai, China
| | - Zhimiao Lin
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Peking University First Hospital, Beijing, China
| | - Yong Yang
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Peking University First Hospital, Beijing, China; Peking-Tsinghua Center for Life Sciences, Beijing, China; Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, China.
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10
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Chiu FPC, Salas-Alanis JC, Amaya-Guerra M, Cepeda-Valdes R, McGrath JA, Hsu CK. Novel p.Ala675Thr missense mutation in TRPV3 in Olmsted syndrome. Clin Exp Dermatol 2020; 45:796-798. [PMID: 32410213 DOI: 10.1111/ced.14228] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/24/2020] [Indexed: 11/27/2022]
Affiliation(s)
- F P-C Chiu
- Department of Dermatology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,International Center for Wound Repair and Regeneration (iWRR), National Cheng Kung University, Tainan, Taiwan.,St John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, London, UK
| | - J C Salas-Alanis
- Department of Dermatology, Dystrophic Epidermolysis Bullosa Research Association Mexico Foundation, Monterrey, Nuevo Leon, Mexico
| | | | - R Cepeda-Valdes
- Department of Dermatology, Dystrophic Epidermolysis Bullosa Research Association Mexico Foundation, Monterrey, Nuevo Leon, Mexico
| | - J A McGrath
- Department of Dermatology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,St John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, London, UK
| | - C-K Hsu
- Department of Dermatology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,International Center for Wound Repair and Regeneration (iWRR), National Cheng Kung University, Tainan, Taiwan.,St John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, London, UK
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11
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Affiliation(s)
- Li-Wen Zhang
- Department of Dermatovenereology, Chengdu Second People's Hospital, Chengdu, China
| | - Wen-Ju Wang
- Department of Dermatovenereology, Chengdu Second People's Hospital, Chengdu, China
| | - Tao Chen
- Department of Dermatovenereology, Chengdu Second People's Hospital, Chengdu, China
| | - Li-Xin Fu
- Department of Dermatovenereology, Chengdu Second People's Hospital, Chengdu, China
| | - Yong-Hong Lu
- Department of Dermatovenereology, Chengdu Second People's Hospital, Chengdu, China
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12
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Dai S, Sun Z, Lee M, Wang H, Yang Y, Lin Z. Olmsted syndrome with alopecia universalis caused by heterozygous mutation in
PERP. Br J Dermatol 2019; 182:242-244. [PMID: 31361044 DOI: 10.1111/bjd.18311] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- S. Dai
- Department of Dermatology Peking University First Hospital Beijing China
- Beijing Key Laboratory of Molecular Diagnosis on Dermatoses Beijing China
| | - Z. Sun
- Department of Dermatology Xijing Hospital Fourth Military Medical University Xi'an China
| | - M. Lee
- Department of Dermatology Peking University First Hospital Beijing China
- Beijing Key Laboratory of Molecular Diagnosis on Dermatoses Beijing China
| | - H. Wang
- Department of Dermatology Peking University First Hospital Beijing China
- Beijing Key Laboratory of Molecular Diagnosis on Dermatoses Beijing China
| | - Y. Yang
- Department of Dermatology Peking University First Hospital Beijing China
- Beijing Key Laboratory of Molecular Diagnosis on Dermatoses Beijing China
- Center for Genetic Diseases Hospital for Skin Diseases (Institute of Dermatology) Chinese Academy of Medical Sciences and Peking Union Medical College Nanjing China
| | - Z. Lin
- Department of Dermatology Peking University First Hospital Beijing China
- Beijing Key Laboratory of Molecular Diagnosis on Dermatoses Beijing China
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13
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Palmer MA, Blakeborough L, Harries M, Haslam IS. Cholesterol homeostasis: Links to hair follicle biology and hair disorders. Exp Dermatol 2019; 29:299-311. [PMID: 31260136 DOI: 10.1111/exd.13993] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 05/24/2019] [Accepted: 06/19/2019] [Indexed: 01/10/2023]
Abstract
Lipids and lipid metabolism are critical factors in hair follicle (HF) biology, and cholesterol has long been suspected of influencing hair growth. Altered cholesterol homeostasis is involved in the pathogenesis of primary cicatricial alopecia, mutations in a cholesterol transporter are associated with congenital hypertrichosis, and dyslipidaemia has been linked to androgenic alopecia. The underlying molecular mechanisms by which cholesterol influences pathways involved in proliferation and differentiation within HF cell populations remain largely unknown. As such, expanding our knowledge of the role for cholesterol in regulating these processes is likely to provide new leads in the development of treatments for disorders of hair growth and cycling. This review describes the current state of knowledge with respect to cholesterol homeostasis in the HF along with known and putative links to hair pathologies.
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Affiliation(s)
- Megan A Palmer
- School of Applied Sciences, Department of Biological and Geographical Sciences, University of Huddersfield, Huddersfield, UK
| | - Liam Blakeborough
- School of Applied Sciences, Department of Biological and Geographical Sciences, University of Huddersfield, Huddersfield, UK
| | - Matthew Harries
- Salford Royal NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK.,Musculoskeletal and Dermatological Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Iain S Haslam
- School of Applied Sciences, Department of Biological and Geographical Sciences, University of Huddersfield, Huddersfield, UK
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14
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Weinberg R, Coulombe P, Polydefkis M, Caterina M. Pain mechanisms in hereditary palmoplantar keratodermas. Br J Dermatol 2019; 182:543-551. [DOI: 10.1111/bjd.17880] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/07/2019] [Indexed: 12/12/2022]
Affiliation(s)
- R.L. Weinberg
- Department of Neurosurgery Johns Hopkins School of Medicine Baltimore MD 21205 U.S.A
- Department of Biological Chemistry Johns Hopkins School of Medicine Baltimore MD 21205 U.S.A
- Solomon H. Snyder Department of Neuroscience Neurosurgery Pain Research Institute Johns Hopkins School of Medicine Baltimore MD 21205 U.S.A
| | - P.A. Coulombe
- Department of Cell and Developmental Biology University of Michigan Medical School Ann Arbor MI 48109 U.S.A
- Department of Dermatology University of Michigan Medical School Ann Arbor MI 48109 U.S.A
| | - M. Polydefkis
- Department of Neurology Johns Hopkins School of Medicine Baltimore MD 21205 U.S.A
| | - M.J. Caterina
- Department of Neurosurgery Johns Hopkins School of Medicine Baltimore MD 21205 U.S.A
- Department of Biological Chemistry Johns Hopkins School of Medicine Baltimore MD 21205 U.S.A
- Solomon H. Snyder Department of Neuroscience Neurosurgery Pain Research Institute Johns Hopkins School of Medicine Baltimore MD 21205 U.S.A
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15
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Jiang Y, Jin H, Zeng Y. A novel mutation in MBTPS2 causes ichthyosis follicularis, alopecia, and photophobia syndrome. Mol Genet Genomic Med 2019; 7:e812. [PMID: 31215178 PMCID: PMC6687642 DOI: 10.1002/mgg3.812] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 05/21/2019] [Accepted: 05/29/2019] [Indexed: 12/21/2022] Open
Abstract
Background The ichthyosis follicularis, alopecia, and photophobia (IFAP) syndrome is a rare X‐linked genodermatosis characterized by noninflammatory spiny follicular hyperkeratosis, severe photophobia, and non‐scarring alopecia with variable severities. IFAP syndrome results from mutations in the gene encoding the membrane‐bound transcription factor peptidase, site 2 (MBTPS2). Methods We present an 11‐year‐old male with typical clinical features of IFAP syndrome, including diffuse follicular hyperkeratosis, alopecia, photophobia, psoriasiform plaques, short statue, nail dystrophy, mental retardation, and seizures. Results A novel missense mutation (NM_015884.4: c.1298T > C; NP_056968.1: p. L433P) in the membrane‐bound transcription factor peptidase, site 2 gene (MBTPS2) was identified in our patient. The heterozygous MBTPS2 mutation was identified in his mother but not his father. Conclusion This study demonstrated a novel MBTPS2 mutation in a patient with IFAP syndrome and thus expands the known MBPTS2 molecular repertoire.
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Affiliation(s)
- Yanyun Jiang
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hongzhong Jin
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yueping Zeng
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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16
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Schweitzer GG, Gan C, Bucelli RC, Wegner D, Schmidt RE, Shinawi M, Finck BN, Brookheart RT. A mutation in Site-1 Protease is associated with a complex phenotype that includes episodic hyperCKemia and focal myoedema. Mol Genet Genomic Med 2019; 7:e00733. [PMID: 31070020 PMCID: PMC6625134 DOI: 10.1002/mgg3.733] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 01/25/2019] [Accepted: 04/04/2019] [Indexed: 01/04/2023] Open
Abstract
Background Site‐1 Protease (S1P) is a Golgi‐resident protein required for the activation of regulatory proteins that drive key cellular functions, including, the unfolded protein response (UPR) and lipid and cholesterol biosynthesis. While disruptions in S1P function have been widely characterized in animal models, to date, the implications of disrupted S1P function in human disease states are not completely known. Methods The patient and both parents underwent whole exome and mitochondrial DNA sequencing, and Sanger sequencing was used to confirm the mutation. Western blotting and immunofluorescence studies were performed on either proband‐derived fibroblasts or on an established cell line to assess protein expression and cellular localization of the mutated S1P protein. Quantitative real‐time PCR and luciferase reporter assays were used to examine activation of S1P target pathways in the context of the S1P mutation. Results We describe a female patient with a de novo heterozygous missense mutation in the transmembrane domain of S1P (p. Pro1003Ser). The patient presented to our neuromuscular clinic with episodic, activity‐induced, focal myoedema and myalgias with hyperCKemia. Her clinical phenotype was complex and included gastrointestinal hypomotility, ocular migraines, and polycystic ovary syndrome. Molecular analysis using proband‐derived fibroblasts and cell lines harboring the Pro1003Ser mutation demonstrated increased activation of UPR and lipid and cholesterol regulatory pathways and localization of S1P Pro1003Ser in the Golgi. Conclusion These findings suggest a critical function for S1P in several human organ systems and implicate an important role for S1P in various human disease states.
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Affiliation(s)
- George G Schweitzer
- John T. Milliken Department of Medicine, Division of Geriatrics and Nutritional Sciences, Washington University School of Medicine, St. Louis, Missouri
| | - Connie Gan
- John T. Milliken Department of Medicine, Division of Geriatrics and Nutritional Sciences, Washington University School of Medicine, St. Louis, Missouri
| | - Robert C Bucelli
- Department of Neurology, Washington University School of Medicine, St. Louis, Missouri
| | - Daniel Wegner
- Edward Mallinckrodt Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri
| | - Robert E Schmidt
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri
| | - Marwan Shinawi
- Edward Mallinckrodt Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri.,Division of Genetics and Genomic Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Brian N Finck
- John T. Milliken Department of Medicine, Division of Geriatrics and Nutritional Sciences, Washington University School of Medicine, St. Louis, Missouri
| | - Rita T Brookheart
- John T. Milliken Department of Medicine, Division of Geriatrics and Nutritional Sciences, Washington University School of Medicine, St. Louis, Missouri
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17
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Guerra L, Castori M, Didona B, Castiglia D, Zambruno G. Hereditary palmoplantar keratodermas. Part I. Non-syndromic palmoplantar keratodermas: classification, clinical and genetic features. J Eur Acad Dermatol Venereol 2018; 32:704-719. [PMID: 29489036 DOI: 10.1111/jdv.14902] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 02/09/2018] [Indexed: 12/15/2022]
Abstract
The term palmoplantar keratoderma (PPK) indicates any form of persistent thickening of the epidermis of palms and soles and includes genetic as well as acquired conditions. We review the nosology of hereditary PPKs that comprise an increasing number of entities with different prognoses, and a multitude of associated cutaneous and extracutaneous features. On the basis of the phenotypic consequences of the underlying genetic defect, hereditary PPKs may be divided into the following: (i) non-syndromic, isolated PPKs, which are characterized by a unique or predominant palmoplantar involvement; (ii) non-syndromic PPKs with additional distinctive cutaneous and adnexal manifestations, here named complex PPKs; (iii) syndromic PPKs, in which PPK is associated with specific extracutaneous manifestations. To date, the diagnosis of the different hereditary PPKs is based mainly on clinical history and features combined with histopathological findings. In recent years, the exponentially increasing use of next-generation sequencing technologies has led to the identification of several novel disease genes, and thus substantially contributed to elucidate the molecular basis of such a heterogeneous group of disorders. Here, we focus on hereditary non-syndromic isolated and complex PPKs. Syndromic PPKs are reviewed in the second part of this 2-part article, where other well-defined genetic diseases, which may present PPK among their phenotypic manifestations, are also listed and diagnostic and therapeutic approaches for PPKs are summarized.
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Affiliation(s)
- L Guerra
- Laboratory of Molecular and Cell Biology, Istituto Dermopatico dell'Immacolata-IRCCS, Rome, Italy
| | - M Castori
- Division of Medical Genetics, Casa Sollievo della Sofferenza-IRCCS, San Giovanni Rotondo, Foggia, Italy
| | - B Didona
- Rare Skin Disease Center, Istituto Dermopatico dell'Immacolata-IRCCS, Rome, Italy
| | - D Castiglia
- Laboratory of Molecular and Cell Biology, Istituto Dermopatico dell'Immacolata-IRCCS, Rome, Italy
| | - G Zambruno
- Genetic and Rare Diseases Research Area and Dermatology Unit, Bambino Gesù Children's Hospital-IRCCS, Rome, Italy
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18
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Takeichi T, Tsukamoto K, Okuno Y, Kojima D, Kono M, Suga Y, Akiyama M. A combination of low-dose systemic etretinate and topical calcipotriol/betamethasone dipropionate treatment for hyperkeratosis and itching in Olmsted syndrome associated with a TRPV3 mutation. J Dermatol Sci 2017; 88:144-146. [DOI: 10.1016/j.jdermsci.2017.05.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 03/31/2017] [Accepted: 05/22/2017] [Indexed: 11/27/2022]
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19
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Verma G, Sardana K, Gautam RK. Mutilating Keratoderma with Concomitant Alopecia and Keratoses Follicularis Spinulosa Decalvans: X-Linked Olmsted Syndrome and its Response to Isotretinoin. Indian Dermatol Online J 2017; 8:482-484. [PMID: 29204395 PMCID: PMC5707844 DOI: 10.4103/idoj.idoj_422_16] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
We report a case of mutilating keratoderma with alopecia and keratoses follicularis spinulosa decalvans (KFSD), which was initially diagnosed as ectodermal dysplasia and Olmsted syndrome but was revisited as a case of X-linked Olmsted (XLO) syndrome. We focus on this uncommon entity (XLO) to highlight the differentials of alopecia with palmoplantar keratoderma.
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Affiliation(s)
- Gunjan Verma
- Department of Dermatology, PGIMER and Dr Ram Manohar Lohia Hospital, New Delhi, India
| | - Kabir Sardana
- Department of Dermatology, PGIMER and Dr Ram Manohar Lohia Hospital, New Delhi, India
| | - R K Gautam
- Department of Dermatology, PGIMER and Dr Ram Manohar Lohia Hospital, New Delhi, India
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20
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Wakabayashi M, Yoshioka T, Higashino K, Numata Y, Igarashi Y, Kihara A. Decreases in 15-lipoxygenase metabolites in Olmsted syndrome model rats. J Dermatol Sci 2016; 85:186-196. [PMID: 28024685 DOI: 10.1016/j.jdermsci.2016.12.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 12/02/2016] [Accepted: 12/15/2016] [Indexed: 12/19/2022]
Abstract
BACKGROUND Olmsted syndrome (OS) is a congenital dermatosis characterized by palmoplantar keratoderma and periorificial keratotic plaque. TRPV3 (transient receptor potential vanilloid subtype 3) encodes a thermosensitive Ca2+ channel and is the causative gene of OS. However, the molecular mechanism that causes the pathological development of OS is unclear. OBJECTIVE We aimed to investigate the molecular mechanisms underlying OS pathology from the perspective of lipid metabolism. METHODS Comprehensive lipidomics and microarray analyses were conducted on tissue samples from a non-lesional skin area of OS model rats (Ht rats) and from wild type (WT) rats as the control. RESULTS Infiltration of leukocytes such as eosinophils and neutrophils and an increase in the fibrotic region were detected in the unaffected skin area of Ht rats compared with the WT rats. Among about 600 lipid species examined, the levels of 15-lipoxygenase (LOX) metabolites, the precursors of anti-inflammatory and pro-resolving lipid mediators, and dihydroceramides decreased by ≥16-fold in Ht rats compared with WT rats. Consistent with the decreases in the 15-LOX metabolites, expression levels of the genes that encode the 15-LOXs, Alox15 and Alox15b, were largely reduced. Conversely, increased expression levels were detected of Il36b, Ccl20, Cxcl1, and Cxcl2, which encode cytokines/chemokines, and S100a8 and S100a9, which encode the Ca2+ binding proteins that are implicated in epidermal proliferation. CONCLUSION The pro-inflammatory state in the unaffected skin of Ht rats caused by decreases in 15-LOX metabolites and increases in cytokines/chemokines may contribute to the pathogenesis of OS.
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Affiliation(s)
- Masato Wakabayashi
- Shionogi Innovation Center for Drug Discovery, Discovery Research Laboratory for Innovative Frontier Medicines, Shionogi & Co., Ltd., Sapporo 001-0021, Japan; Laboratory of Biochemistry, Graduate School of Life Science, Hokkaido University, Sapporo 060-0812, Japan
| | - Takeshi Yoshioka
- Shionogi Innovation Center for Drug Discovery, Discovery Research Laboratory for Innovative Frontier Medicines, Shionogi & Co., Ltd., Sapporo 001-0021, Japan
| | - Kenichi Higashino
- Shionogi Innovation Center for Drug Discovery, Discovery Research Laboratory for Innovative Frontier Medicines, Shionogi & Co., Ltd., Sapporo 001-0021, Japan
| | - Yoshito Numata
- Shionogi Innovation Center for Drug Discovery, Discovery Research Laboratory for Innovative Frontier Medicines, Shionogi & Co., Ltd., Sapporo 001-0021, Japan
| | - Yasuyuki Igarashi
- Laboratory of Biomembrane and Biofunctional Chemistry, Faculty of Advanced Life Science, Hokkaido University, Sapporo 001-0021, Japan
| | - Akio Kihara
- Laboratory of Biochemistry, Graduate School of Life Science, Hokkaido University, Sapporo 060-0812, Japan; Laboratory of Biochemistry, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan.
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21
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Abstract
TRPV3 is a non-selective cationic channel and is important for several physiological functions. It can be activated by physiological temperature and selective endogenous and exogenous compounds. TRPV3 is one of the key ion channel involved in Ca2+-signaling in keratinocyte and thus involved in skin-related functions. Recently, naturally occurring mutations in TRPV3, namely G573A, G573S, G573C and W692G have been detected which are linked with the development of pathophysiological conditions such as Olmsted Syndrome (OS) and other skin disorders. Our qualitative and quantitative data suggests that these naturally occurring TRPV3 mutants are mainly restricted in the ER. Expression of OS-mutants cause impaired vesicular trafficking resulting reduced surface localization of these mutants and other membrane proteins too. OS-mutants also cause reduced cell adhesion, altered distribution and less number of lysosomes. Our data confirms that TRPV3 is a lysosomal protein suggesting that Olmsted Syndrome is a lysosomal disorder. These findings may have a broad implication in the context of keratinocyte functions, skin-degeneration and in skin-cancer.
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Affiliation(s)
- Manoj Yadav
- a National Institute of Science Education and Research, Institute of Physics Campus , Bhubaneswar , Orissa , India.,b Homi Bhabha National Institute, Training School Complex , Mumbai , India
| | - Chandan Goswami
- a National Institute of Science Education and Research, Institute of Physics Campus , Bhubaneswar , Orissa , India.,b Homi Bhabha National Institute, Training School Complex , Mumbai , India
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22
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Murgiano L, Waluk DP, Towers R, Wiedemar N, Dietrich J, Jagannathan V, Drögemüller M, Balmer P, Druet T, Galichet A, Penedo MC, Müller EJ, Roosje P, Welle MM, Leeb T. An Intronic MBTPS2 Variant Results in a Splicing Defect in Horses with Brindle Coat Texture. G3 (Bethesda) 2016; 6:2963-70. [PMID: 27449517 DOI: 10.1534/g3.116.032433] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
We investigated a family of horses exhibiting irregular vertical stripes in their hair coat texture along the neck, back, hindquarters, and upper legs. This phenotype is termed “brindle” by horse breeders. We propose the term “brindle 1 (BR1)” for this specific form of brindle. In some BR1 horses, the stripes were also differentially pigmented. Pedigree analyses were suggestive of a monogenic X-chromosomal semidominant mode of inheritance. Haplotype analyses identified a 5 Mb candidate region on chromosome X. Whole genome sequencing of four BR1 and 60 nonbrindle horses identified 61 private variants in the critical interval, none of them located in an exon of an annotated gene. However, one of the private variants was close to an exon/intron boundary in intron 10 of the MBTPS2 gene encoding the membrane bound transcription factor peptidase, site 2 (c.1437+4T>C). Different coding variants in this gene lead to three related genodermatoses in human patients. We therefore analyzed MBTPS2 transcripts in skin, and identified an aberrant transcript in a BR1 horse, which lacked the entire exon 10 and parts of exon 11. The MBTPS2:c1437+4T>C variant showed perfect cosegregation with the brindle phenotype in the investigated family, and was absent from 457 control horses of diverse breeds. Altogether, our genetic data, and previous knowledge on MBTPS2 function in the skin, suggest that the identified MBTPS2 intronic variant leads to partial exon skipping, and causes the BR1 phenotype in horses.
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23
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Lindert U, Cabral WA, Ausavarat S, Tongkobpetch S, Ludin K, Barnes AM, Yeetong P, Weis M, Krabichler B, Srichomthong C, Makareeva EN, Janecke AR, Leikin S, Röthlisberger B, Rohrbach M, Kennerknecht I, Eyre DR, Suphapeetiporn K, Giunta C, Marini JC, Shotelersuk V. MBTPS2 mutations cause defective regulated intramembrane proteolysis in X-linked osteogenesis imperfecta. Nat Commun 2016; 7:11920. [PMID: 27380894 PMCID: PMC4935805 DOI: 10.1038/ncomms11920] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 05/12/2016] [Indexed: 11/09/2022] Open
Abstract
Osteogenesis imperfecta (OI) is a collagen-related bone dysplasia. We identified an X-linked recessive form of OI caused by defects in MBTPS2, which encodes site-2 metalloprotease (S2P). MBTPS2 missense mutations in two independent kindreds with moderate/severe OI cause substitutions at highly conserved S2P residues. Mutant S2P has normal stability, but impaired functioning in regulated intramembrane proteolysis (RIP) of OASIS, ATF6 and SREBP transcription factors, consistent with decreased proband secretion of type I collagen. Further, hydroxylation of the collagen lysine residue (K87) critical for crosslinking is reduced in proband bone tissue, consistent with decreased lysyl hydroxylase 1 in proband osteoblasts. Reduced collagen crosslinks presumptively undermine bone strength. Also, proband osteoblasts have broadly defective differentiation. These mutations provide evidence that RIP plays a fundamental role in normal bone development. Osteogenesis imperfecta (OI) is genetically linked to autosomal dominant or autosomal recessive mutations. Here, Marini et al. describe two families with X-chromosome-linked OI with mutations in MBTPS2 that alter regulated intramembrane proteolysis and subsequent defects in collagen crosslinking and osteoblast function.
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Affiliation(s)
- Uschi Lindert
- Division of Metabolism, Connective Tissue Unit and Children's Research Center, University Children's Hospital Zurich, Zurich 8032, Switzerland
| | - Wayne A Cabral
- Section on Heritable Disorders of Bone and Extracellular Matrix, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Surasawadee Ausavarat
- Center of Excellence for Medical Genetics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand.,Excellence Center for Medical Genetics, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok 10330, Thailand
| | - Siraprapa Tongkobpetch
- Center of Excellence for Medical Genetics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand.,Excellence Center for Medical Genetics, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok 10330, Thailand
| | - Katja Ludin
- Center for Laboratory Medicine, Department of Medical Genetics, Kantonsspital Aarau, Aarau 5001, Switzerland
| | - Aileen M Barnes
- Section on Heritable Disorders of Bone and Extracellular Matrix, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Patra Yeetong
- Center of Excellence for Medical Genetics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand.,Excellence Center for Medical Genetics, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok 10330, Thailand
| | - Maryann Weis
- Department of Orthopedics and Sports Medicine, University of Washington, Seattle, Washington 98195, USA
| | - Birgit Krabichler
- Division of Human Genetics, Medical University of Innsbruck, Innsbruck 6020, Austria
| | - Chalurmpon Srichomthong
- Center of Excellence for Medical Genetics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand.,Excellence Center for Medical Genetics, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok 10330, Thailand
| | - Elena N Makareeva
- Section on Physical Biochemistry, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Andreas R Janecke
- Division of Human Genetics, Medical University of Innsbruck, Innsbruck 6020, Austria.,Department of Pediatrics I, Medical University of Innsbruck, Innsbruck 6020, Austria
| | - Sergey Leikin
- Section on Physical Biochemistry, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Benno Röthlisberger
- Center for Laboratory Medicine, Department of Medical Genetics, Kantonsspital Aarau, Aarau 5001, Switzerland
| | - Marianne Rohrbach
- Division of Metabolism, Connective Tissue Unit and Children's Research Center, University Children's Hospital Zurich, Zurich 8032, Switzerland
| | - Ingo Kennerknecht
- Institute of Human Genetics, Westfälische Wilhelms University, Münster 48149, Germany
| | - David R Eyre
- Department of Orthopedics and Sports Medicine, University of Washington, Seattle, Washington 98195, USA
| | - Kanya Suphapeetiporn
- Center of Excellence for Medical Genetics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand.,Excellence Center for Medical Genetics, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok 10330, Thailand
| | - Cecilia Giunta
- Division of Metabolism, Connective Tissue Unit and Children's Research Center, University Children's Hospital Zurich, Zurich 8032, Switzerland
| | - Joan C Marini
- Section on Heritable Disorders of Bone and Extracellular Matrix, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genetics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand.,Excellence Center for Medical Genetics, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok 10330, Thailand
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Cao X, Wang H, Li Y, Lee M, Jiang L, Zhou Y, Feng C, Lin Z, Yang Y. Semidominant Inheritance in Olmsted Syndrome. J Invest Dermatol 2016; 136:1722-1725. [PMID: 27189830 DOI: 10.1016/j.jid.2016.04.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 03/28/2016] [Accepted: 04/28/2016] [Indexed: 11/25/2022]
Affiliation(s)
- Xu Cao
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Beijing, China; Peking-Tsinghua Center for Life Sciences, Beijing, China
| | - Huijun Wang
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Beijing, China; Peking-Tsinghua Center for Life Sciences, Beijing, China; Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China
| | - Yanhong Li
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Beijing, China; Department of Dermatology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Mingyang Lee
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Beijing, China
| | - Liya Jiang
- Department of Dermatology, Liaocheng People's Hospital, Liaocheng, Shandong Province, China
| | - Yun Zhou
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Beijing, China; Department of Dermatology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, China
| | - Cheng Feng
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Beijing, China
| | - Zhimiao Lin
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Beijing, China.
| | - Yong Yang
- Department of Dermatology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Beijing, China; Peking-Tsinghua Center for Life Sciences, Beijing, China
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25
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Ni C, Yan M, Zhang J, Cheng R, Liang J, Deng D, Wang Z, Li M, Yao Z. A novel mutation in TRPV3 gene causes atypical familial Olmsted syndrome. Sci Rep 2016; 6:21815. [PMID: 26902751 DOI: 10.1038/srep21815] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 10/26/2015] [Indexed: 02/03/2023] Open
Abstract
Olmsted syndrome (OS) is a rare keratinization disorder, typically characterized by two primary diagnostic hallmarks—mutilating palmoplanter and periorificial keratoderma. However, there’s a growing body of literature reporting on the phenotypic diversity of OS, including the absence of aforementioned hallmarks and the presence of some unusual clinical features. Here we presented an atypical familial case of OS that could be confused with Huriez syndrome due to the presence of a scleodactyly-like appearance and tapered fingers in the proband. We ruled out this possibility and made a definitive diagnosis of OS based on clinical features and a genetic assay. Recently, mutations in TRPV3 associated with autosomal dominant or recessive OS continued to be reported, thus conducing to clarifying the underlying relationship between the genotype and phenotype of OS. So we further explored the genotype-phenotype correlation by integrating functionl assays with in silico predictions. Our research not only redefined the phenotypic spectrum of OS, but also provided concrete molecular insights into how mutations in a single gene can lead to significant differences in the severity of this rare disease.
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26
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Affiliation(s)
- M.K. Agarwala
- Department of Dermatology Christian Medical College Vellore Tamil Nadu India
| | - R. George
- Department of Dermatology Christian Medical College Vellore Tamil Nadu India
| | - R. Pramanik
- St John's Institute of Dermatology King's College London London U.K
| | - J.A. McGrath
- St John's Institute of Dermatology King's College London London U.K
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27
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Potelle S, Klein A, Foulquier F. Golgi post-translational modifications and associated diseases. J Inherit Metab Dis 2015; 38:741-51. [PMID: 25967285 DOI: 10.1007/s10545-015-9851-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 04/02/2015] [Accepted: 04/08/2015] [Indexed: 11/24/2022]
Abstract
For non specialists, Golgi is a very well known subcellular compartment involved in secretion and correct targeting of soluble and transmembrane proteins. Nevertheless, Golgi is also specifically involved in many different and diverse post-translational modifications. Through its diverse functions, Golgi is not only able to modify secreted and transmembrane proteins but also cytoplasmic proteins. The Golgi apparatus research field is so broad that an exhaustive review of this organelle is not doable here. The goal of this review is to cover the main post-translational modifications occurring at the Golgi level and present the identified associated diseases.
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Affiliation(s)
- Sven Potelle
- CNRS-UMR 8576, Structural and Functional Glycobiology unit, FRABIO, University of Lille, 59655, Villeneuve d'Ascq, France
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Abstract
Olmsted syndrome (OS) is a rare genodermatosis classically characterized by the combination of bilateral mutilating transgredient palmoplantar keratoderma (PPK) and periorificial keratotic plaques, but which shows considerable clinical heterogeneity. The disease starts usually at birth or in early childhood. About 73 cases have been reported worldwide. OS is observed in both sexes, although male cases are more frequent. The most suggestive symptoms associate PPK with pseudoainhum and periorificial keratotic plaques. Frequently associated features include hair and nail abnormalities, leukokeratosis, corneal default and recurrent infections. Pain and itching are variable but can be severe. Most of reported OS cases are sporadic, although familial cases with different mode of inheritance were also described. Mutations in TRPV3 (Transient receptor potential vanilloid-3) gene have recently been identified as a cause of autosomal dominant (gain-of-function mutations) or recessive OS. Mutations in MBTPS2 (membrane-bound transcription factor protease, site 2) gene were identified in a recessive X-linked form. The diagnosis relies mainly on clinical features associating severe PPK and periorificial keratotic plaques, but can be challenging in patients with incomplete phenotype or atypical features. OS has to be differentiated from other severe forms of PPK including Vohwinkel, Clouston, Papillon-Lefèvre or Haim-Munk syndromes, Mal de Meleda, pachyonychia congenita, Tyrosinemia type II and acrodermatitis enteropathica. When differential diagnoses are difficult to exclude, genetic studies are essential to search for a TRPV3 or MBTPS2 mutation. However, additional genes remain to be identified. No specific and satisfactory therapy is currently available for OS. Current treatments of hyperkeratosis (mainly emollients, keratolytics, retinoids or corticosteroids), either topical or systemic, are symptomatic and offer only temporary partial relief. Specific management of pain and itching is important to reduce the morbidity of the disease. The disease is debilitating and progressive keratoderma and auto-amputation of digits can prevent patients from grasping and walking, and confine them to a wheelchair. New therapeutic options are therefore crucial and are expected from a better understanding of the disease mechanisms. The use of TRPV3 antagonists would represent such a targeted and potentially powerful strategy.
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Affiliation(s)
- Sabine Duchatelet
- INSERM UMR 1163, Laboratory of Genetic skin diseases, Imagine Institute, 2nd floor, 24 bld du Montparnasse, 75015, Paris, France. .,University Paris Descartes, Sorbonne Paris Cité, Paris, France.
| | - Alain Hovnanian
- INSERM UMR 1163, Laboratory of Genetic skin diseases, Imagine Institute, 2nd floor, 24 bld du Montparnasse, 75015, Paris, France. .,University Paris Descartes, Sorbonne Paris Cité, Paris, France. .,Department of Genetics, Necker Enfants Malades Hospital, Paris, France.
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29
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Fong K, Takeichi T, Liu L, Pramanik R, Lee J, Akiyama M, McGrath JA. Ichthyosis follicularis, atrichia, and photophobia syndrome associated with a new mutation inMBTPS2. Clin Exp Dermatol 2015; 40:529-32. [DOI: 10.1111/ced.12587] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/25/2014] [Indexed: 11/29/2022]
Affiliation(s)
- K. Fong
- St John's Institute of Dermatology; King's College London (Guy's Campus); London UK
| | - T. Takeichi
- St John's Institute of Dermatology; King's College London (Guy's Campus); London UK
- Department of Dermatology; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - L. Liu
- Viapath; St Thomas' Hospital; London UK
| | - R. Pramanik
- St John's Institute of Dermatology; King's College London (Guy's Campus); London UK
| | - J. Lee
- St John's Institute of Dermatology; King's College London (Guy's Campus); London UK
| | - M. Akiyama
- Department of Dermatology; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - J. A. McGrath
- St John's Institute of Dermatology; King's College London (Guy's Campus); London UK
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30
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Maruthappu T, Scott CA, Kelsell DP. Discovery in genetic skin disease: the impact of high throughput genetic technologies. Genes (Basel) 2014; 5:615-34. [PMID: 25093584 DOI: 10.3390/genes5030615] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Revised: 07/07/2014] [Accepted: 07/14/2014] [Indexed: 11/21/2022] Open
Abstract
The last decade has seen considerable advances in our understanding of the genetic basis of skin disease, as a consequence of high throughput sequencing technologies including next generation sequencing and whole exome sequencing. We have now determined the genes underlying several monogenic diseases, such as harlequin ichthyosis, Olmsted syndrome, and exfoliative ichthyosis, which have provided unique insights into the structure and function of the skin. In addition, through genome wide association studies we now have an understanding of how low penetrance variants contribute to inflammatory skin diseases such as psoriasis vulgaris and atopic dermatitis, and how they contribute to underlying pathophysiological disease processes. In this review we discuss strategies used to unravel the genes underlying both monogenic and complex trait skin diseases in the last 10 years and the implications on mechanistic studies, diagnostics, and therapeutics.
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31
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Duchatelet S, Guibbal L, de Veer S, Fraitag S, Nitschké P, Zarhrate M, Bodemer C, Hovnanian A. Olmsted syndrome with erythromelalgia caused by recessive transient receptor potential vanilloid 3 mutations. Br J Dermatol 2014; 171:675-8. [PMID: 24606194 DOI: 10.1111/bjd.12951] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- S Duchatelet
- INSERM, UMR1163, Institut Imagine, Université Paris Descartes - Sorbonne Paris Cité, Paris, France
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Abstract
BACKGROUND Palmoplantar dermatoses are common. They can be both functionally debilitating and markedly stigmatize the patient because they are so visible. Dermatoses on the hands and feet often go along with palmoplantar hyperkeratosis. Such palmoplantar keratoses (PPK) can be classified into acquired (non-hereditary) and hereditary (monogenetic) PPK. OBJECTIVES A considerable proportion of PPK develop on the grounds of gene defects. As these diseases constitute a heterogeneous group of quite uncommon single entities, the treating physician must know when to entertain the diagnosis of a hereditary PPK and which causative genes should be considered. METHODS We summarize the common causes of acquired and hereditary PPK based on a review of the latest literature. RESULTS The most common causes of acquired PPK are inflammatory dermatoses like psoriasis, lichen planus, or hand and feet eczema. Also irritative-toxic (arsenic poisoning, polycyclic aromatic hydrocarbons) and infectious causes of PPK (human papilloma viruses, syphilis, scabies, tuberculosis, mycoses) are not uncommon. Genetically caused PPK may occur isolated, within syndromes or as a paraneoplastic marker. The clinical/histological classification discerns diffuse, focal, or punctuate forms of PPK with and without epidermolysis. A new classification based on the causative gene defect is starting to replace the traditional clinical classification. CONCLUSIONS Knowledge about the large, but heterogeneous group of hereditary PPK is important to adequately counsel and treat patients and their families.
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Affiliation(s)
- C Seebode
- Klinik für Dermatologie, Venerologie und Allergologie, Universitätsmedizin Göttingen, Robert-Koch-Str. 40, 37075, Göttingen, Deutschland
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Eytan O, Fuchs-telem D, Mevorach B, Indelman M, Bergman R, Sarig O, Goldberg I, Adir N, Sprecher E. Olmsted Syndrome Caused by a Homozygous Recessive Mutation in TRPV3. J Invest Dermatol 2014; 134:1752-4. [DOI: 10.1038/jid.2014.37] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Kariminejad A, Barzegar M, Abdollahimajd F, Pramanik R, McGrath JA. Olmsted syndrome in an Iranian boy with a new de novo mutation in TRPV3. Clin Exp Dermatol 2014; 39:492-5. [PMID: 24758389 DOI: 10.1111/ced.12318] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/13/2014] [Indexed: 11/28/2022]
Abstract
Olmsted syndrome (OS) is a rare congenital skin disorder characterized by palmoplantar keratoderma, periorificial hyperkeratotic lesions and alopecia. Constriction of digits, onychodystrophy and pruritus may also occur. Recently, pathogenic heterozygous mutations in TRPV3 were identified, with most cases showing de novo dominant inheritance. We present the clinical and molecular features of OS in a 10-year-old Iranian boy. He had mutilating palmoplantar keratoderma, periorificial keratotic plaques, diffuse alopecia and constriction bands (pseudoainhum), which led to autoamputation of two digits. TRPV3 was sequenced and a new de novo heterozygous missense mutation, c.2076G>C (p.Trp692Cys), was identified. This case illustrates the characteristic clinical features and complications that can present in OS, and further expands the molecular basis of this genodermatosis.
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Affiliation(s)
- A Kariminejad
- Kariminejad-Najmabadi Pathology and Genetics Center, Tehran, Iran
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35
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de Veer SJ, Furio L, Harris JM, Hovnanian A. Proteases: common culprits in human skin disorders. Trends Mol Med 2014; 20:166-78. [DOI: 10.1016/j.molmed.2013.11.005] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Revised: 11/24/2013] [Accepted: 11/25/2013] [Indexed: 12/17/2022]
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Wang HJ, Tang ZL, Lin ZM, Dai LL, Chen Q, Yang Y. Recurrent splice-site mutation in MBTPS2underlying IFAP syndrome with Olmsted syndrome-like features in a Chinese patient. Clin Exp Dermatol 2013; 39:158-61. [PMID: 24313295 DOI: 10.1111/ced.12248] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/16/2013] [Indexed: 12/01/2022]
Affiliation(s)
- H. J. Wang
- Department of Dermatology; Peking University First Hospital; Beijing China
- Peking-Tsinghua Center for Life Sciences; Beijing China
| | - Z. L. Tang
- Department of Dermatology; The Affiliated Hospital of Qingdao University Medical College; Qingdao China
| | - Z. M. Lin
- Department of Dermatology; Peking University First Hospital; Beijing China
| | | | - Q. Chen
- Department of Dermatology; Peking University First Hospital; Beijing China
| | - Y. Yang
- Department of Dermatology; Peking University First Hospital; Beijing China
- Peking-Tsinghua Center for Life Sciences; Beijing China
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Danso-Abeam D, Zhang J, Dooley J, Staats KA, Van Eyck L, Van Brussel T, Zaman S, Hauben E, Van de Velde M, Morren MA, Renard M, Van Geet C, Schaballie H, Lambrechts D, Tao J, Franckaert D, Humblet-Baron S, Meyts I, Liston A. Olmsted syndrome: exploration of the immunological phenotype. Orphanet J Rare Dis 2013; 8:79. [PMID: 23692804 PMCID: PMC3662572 DOI: 10.1186/1750-1172-8-79] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Accepted: 05/08/2013] [Indexed: 02/07/2023] Open
Abstract
Background Olmsted syndrome is a rare congenital skin disorder presenting with periorifical hyperkeratotic lesions and mutilating palmoplantar keratoderma, which is often associated with infections of the keratotic area. A recent study identified de novo mutations causing constitutive activation of TRPV3 as a cause of the keratotic manifestations of Olmsted syndrome. Methods Genetic, clinical and immunological profiling was performed on a case study patient with the clinical diagnosis of Olmsted syndrome. Results The patient was found to harbour a previously undescribed 1718G-C transversion in TRPV3, causing a G573A point mutation. In depth clinical and immunological analysis found multiple indicators of immune dysregulation, including frequent dermal infections, inflammatory infiltrate in the affected skin, hyper IgE production and elevated follicular T cells and eosinophils in the peripheral blood. Conclusions These results provide the first comprehensive assessment of the immunological features of Olmsted syndrome. The systemic phenotype of hyper IgE and persistent eosinophilia suggest a primary or secondary role of immunological processes in the pathogenesis of Olmsted syndrome, and have important clinical consequences with regard to the treatment of Olmsted syndrome patients.
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Bornholdt D, Atkinson TP, Bouadjar B, Catteau B, Cox H, De Silva D, Fischer J, Gunasekera CN, Hadj-Rabia S, Happle R, Holder-Espinasse M, Kaminski E, König A, Mégarbané A, Mégarbané H, Neidel U, Oeffner F, Oji V, Theos A, Traupe H, Vahlquist A, van Bon BW, Virtanen M, Grzeschik KH. Genotype-phenotype correlations emerging from the identification of missense mutations in MBTPS2. Hum Mutat 2013; 34:587-94. [PMID: 23316014 DOI: 10.1002/humu.22275] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Accepted: 12/20/2012] [Indexed: 11/09/2022]
Abstract
Missense mutations affecting membrane-bound transcription factor protease site 2 (MBTPS2) have been associated with Ichthyosis Follicularis with Atrichia and Photophobia (IFAP) syndrome with or without BRESHECK syndrome, with keratosis follicularis spinulosa decalvans, and Olmsted syndrome. This metalloprotease activates, by intramembranous trimming in conjunction with the protease MBTPS1, regulatory factors involved in sterol control of transcription and in cellular stress response. In this study, 11 different MBTPS2 missense mutations detected in patients from 13 unrelated families were correlated with the clinical phenotype, with their effect on cellular growth in media without lipids, and their potential role for sterol control of transcription. Seven variants were novel [c.774C>G (p.I258M); c.758G>C (p.G253A); c.686T>C (p.F229S); c.1427T>C (p.L476S); c.1430A>T (p.D477V); c.1499G>A (p.G500D); c.1538T>C (p.L513P)], four had previously been reported in unrelated sibships [c.261G>A (p.M87I); c.1286G>A (p.R429H); c.1424T>C (p.F475S); c.1523A>G (p.N508S)]. In the enzyme, the mutations cluster in transmembrane domains. Amino-acid exchanges near the active site are more detrimental to functionality of the enzyme and, clinically, associated with more severe phenotypes. In male patients, a genotype-phenotype correlation begins to emerge, linking the site of the mutation in MBTPS2 with the clinical outcome described as IFAP syndrome with or without BRESHECK syndrome, keratosis follicularis spinulosa decalvans, X-linked, Olmsted syndrome, or possibly further X-linked traits with an oculocutaneous component.
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