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Jurynec MJ, Nosyreva E, Thompson D, Munoz C, Novak KA, Matheson DJ, Kazmers NH, Syeda R. PIEZO1 variants that reduce open channel probability are associated with familial osteoarthritis. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.09.03.24312969. [PMID: 39281748 PMCID: PMC11398433 DOI: 10.1101/2024.09.03.24312969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 09/18/2024]
Abstract
The synovial joints senses and responds to a multitude of physical forces to maintain joint homeostasis. Disruption of joint homeostasis results in development of osteoarthritis (OA), a disease characterized by loss of joint space, degeneration of articular cartilage, remodeling of bone and other joint tissues, low-grade inflammation, and pain. How changes in mechanosensing in the joint contribute to OA susceptibility remains elusive. PIEZO1 is a major mechanosensitive cation channel in the joint directly regulated by mechanical stimulus. To test whether altered PIEZO1 channel activity causes increased OA susceptibility, we determined whether variants affecting PIEZO1 are associated with dominant inheritance of age-associated familial OA. We identified four rare coding variants affecting PIEZO1 that are associated with familial hand OA. Single channel analyses demonstrated that all four PIEZO1 mutant channels act in a dominant-negative manner to reduce the open probability of the channel in response to pressure. Furthermore, we show that a GWAS mutation in PIEZO1 associated with reduced joint replacement results in increased channel activity when compared with WT and the mutants. Our data support the hypothesis that reduced PIEZO1 activity confers susceptibility to age-associated OA whereas increased PIEZO1 activity may be associated with reduced OA susceptibility.
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Affiliation(s)
- Michael J Jurynec
- Department of Orthopaedics, University of Utah, Salt Lake City, UT, 84108
- Department of Human Genetics, University of Utah, Salt Lake City, UT, 84112
- Department of Biomedical Engineering, University of Utah, Salt Lake City, UT, 84112
| | - Elena Nosyreva
- Department of Neuroscience, UT Southwestern Medical Center, Dallas, TX, 75390
| | - David Thompson
- Department of Neuroscience, UT Southwestern Medical Center, Dallas, TX, 75390
| | - Crystal Munoz
- Department of Neuroscience, UT Southwestern Medical Center, Dallas, TX, 75390
| | - Kendra A Novak
- Department of Orthopaedics, University of Utah, Salt Lake City, UT, 84108
| | - Derek J Matheson
- Department of Orthopaedics, University of Utah, Salt Lake City, UT, 84108
| | - Nikolas H Kazmers
- Department of Orthopaedics, University of Utah, Salt Lake City, UT, 84108
| | - Ruhma Syeda
- Department of Neuroscience, UT Southwestern Medical Center, Dallas, TX, 75390
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Jackson A, Moss C, Chandler KE, Balboa PL, Bageta ML, Petrof G, Martinez AE, Liu L, Guy A, Mellerio JE, Lee JYW, Ogboli M, Ryan G, McGrath JA, Banka S. Biallelic TUFT1 variants cause woolly hair, superficial skin fragility and desmosomal defects. Br J Dermatol 2023; 188:75-83. [PMID: 36689522 DOI: 10.1093/bjd/ljac026] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 09/13/2022] [Accepted: 09/16/2022] [Indexed: 01/22/2023]
Abstract
BACKGROUND Desmosomes are complex cell junction structures that connect intermediate filaments providing strong cell-to-cell adhesion in tissues exposed to mechanical stress. OBJECTIVES To identify causal variants in individuals with woolly hair and skin fragility of unknown genetic cause. METHODS This research was conducted using whole-genome sequencing, whole-exome sequencing, clinical phenotyping, haplotype analysis, single-cell RNA sequencing data analysis, immunofluorescence microscopy and transmission electron microscopy. RESULTS We identified homozygous predicted loss-of-function tuftelin-1 (TUFT1) variants in nine individuals, from three families, with woolly hair and skin fragility. One donor splice-site variant, c.60+1G>A, was present in two families, while a frameshift variant, p.Gln189Asnfs*49, was found in the third family. Haplotype analysis showed the c.60+1G>A substitution to be a founder variant in the Irish population that likely arose approximately 20 generations ago. Human and mouse single-cell RNA sequencing data showed TUFT1 expression to be enriched in the hair dermal sheath and keratinocytes. TUFT1 expression was highly correlated with genes encoding desmosomal components implicated in diseases with phenotypes that overlap with the cohort presented here. Immunofluorescence showed tuftelin-1 to be mainly localized to the peripheral cell membranes of keratinocytes in normal skin. Skin samples from individuals with TUFT1 variants showed markedly reduced immunoreactivity for tuftelin-1, with a loss of the keratinocyte cell membrane labelling. Light microscopy revealed keratinocyte adhesion, mild hyperkeratosis and areas of superficial peeling. Transmission electron microscopy showed panepidermal acantholysis with widening of intercellular spaces throughout the epidermis and desmosomal detachment through the inner plaques. CONCLUSIONS Biallelic loss-of-function TUFT1 variants cause a new autosomal recessive skin/hair disorder characterized by woolly hair texture and early-onset skin fragility. Tuftelin-1 has a role in desmosomal integrity and function.
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Affiliation(s)
- Adam Jackson
- Division of Evolution, Infection and Genomics, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
- Manchester Centre for Genomic Medicine, St Mary's Hospital, Manchester University NHS Foundation Trust, Health Innovation Manchester, Manchester, UK
| | - Celia Moss
- Department of Dermatology, Birmingham Children's Hospital, Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
| | - Kate E Chandler
- Division of Evolution, Infection and Genomics, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
- Manchester Centre for Genomic Medicine, St Mary's Hospital, Manchester University NHS Foundation Trust, Health Innovation Manchester, Manchester, UK
| | - Pablo Lopez Balboa
- Department of Dermatology, Great Ormond Street Hospital NHS Foundation Trust, London, UK
| | - Maria L Bageta
- Department of Dermatology, Great Ormond Street Hospital NHS Foundation Trust, London, UK
| | - Gabriela Petrof
- Department of Dermatology, Great Ormond Street Hospital NHS Foundation Trust, London, UK
| | - Anna E Martinez
- Department of Dermatology, Great Ormond Street Hospital NHS Foundation Trust, London, UK
| | - Lu Liu
- Viapath, National Diagnostic Epidermolysis Bullosa Laboratory, Guy's Hospital, London, UK
| | - Alyson Guy
- Viapath, National Diagnostic Epidermolysis Bullosa Laboratory, Guy's Hospital, London, UK
| | - Jemima E Mellerio
- St John's Institute of Dermatology, King's College London (Guy's Campus), London, UK
| | - John Y W Lee
- St John's Institute of Dermatology, King's College London (Guy's Campus), London, UK
| | - Malobi Ogboli
- Department of Dermatology, Birmingham Children's Hospital, Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
| | - Gavin Ryan
- West Midlands Regional Genetics Laboratory, Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
| | - John A McGrath
- St John's Institute of Dermatology, King's College London (Guy's Campus), London, UK
| | - Siddharth Banka
- Division of Evolution, Infection and Genomics, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
- Manchester Centre for Genomic Medicine, St Mary's Hospital, Manchester University NHS Foundation Trust, Health Innovation Manchester, Manchester, UK
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Jurynec MJ, Sawitzke AD, Beals TC, Redd MJ, Stevens J, Otterud B, Leppert MF, Grunwald DJ. A hyperactivating proinflammatory RIPK2 allele associated with early-onset osteoarthritis. Hum Mol Genet 2019; 27:2383-2391. [PMID: 29659823 DOI: 10.1093/hmg/ddy132] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 04/09/2018] [Indexed: 12/13/2022] Open
Abstract
Osteoarthritis (OA) is a common debilitating disease characterized by abnormal remodeling of the cartilage and bone of the articular joint. Ameliorating therapeutics are lacking due to limited understanding of the molecular pathways affecting disease initiation and progression. Notably, although a link between inflammation and overt OA is well established, the role of inflammation as a driver of disease occurrence is highly disputed. We analyzed a family with dominant inheritance of early-onset OA and found that affected individuals harbored a rare variant allele encoding a significant amino acid change (p.Asn104Asp) in the kinase domain of receptor interacting protein kinase 2 (RIPK2), which transduces signals from activated bacterial peptidoglycan sensors through the NF-κB pathway to generate a proinflammatory immune response. Functional analyses of RIPK2 activity in zebrafish embryos indicated that the variant RIPK2104Asp protein is hyperactive in its signaling capacity, with augmented ability to activate the innate immune response and the NF-κB pathway and to promote upregulation of OA-associated genes. Further we show a second allele of RIPK2 linked to an inflammatory disease associated with arthritis also has enhanced activity stimulating the NF-κB pathway. Our studies reveal for the first time the inflammatory response can function as a gatekeeper risk factor for OA.
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Affiliation(s)
- Michael J Jurynec
- Department of Orthopaedics, University of Utah, Salt Lake City, 84112, USA
| | - Allen D Sawitzke
- Division of Rheumatology, Department of Internal Medicine, University of Utah, Salt Lake City, 84112, USA
| | - Timothy C Beals
- Department of Orthopaedics, University of Utah, Salt Lake City, 84112, USA
| | - Michael J Redd
- Health Sciences Center Imaging Core Facility, Salt Lake City, 84112, USA
| | - Jeff Stevens
- Department of Human Genetics, University of Utah, Salt Lake City, UT 84112, USA
| | - Brith Otterud
- Department of Human Genetics, University of Utah, Salt Lake City, UT 84112, USA
| | - Mark F Leppert
- Department of Human Genetics, University of Utah, Salt Lake City, UT 84112, USA
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Sliz E, Taipale M, Welling M, Skarp S, Alaraudanjoki V, Ignatius J, Ruddock L, Nissi R, Männikkö M. TUFT1, a novel candidate gene for metatarsophalangeal osteoarthritis, plays a role in chondrogenesis on a calcium-related pathway. PLoS One 2017; 12:e0175474. [PMID: 28410428 PMCID: PMC5391938 DOI: 10.1371/journal.pone.0175474] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 03/27/2017] [Indexed: 12/27/2022] Open
Abstract
Osteoarthritis (OA) is the most common degenerative joint disorder and genetic factors have been shown to have a significant role in its etiology. The first metatarsophalangeal joint (MTP I) is highly susceptible to development of OA due to repetitive mechanical stress during walking. We used whole exome sequencing to study genetic defect(s) predisposing to familial early-onset bilateral MTP I OA inherited in an autosomal dominant manner. A nonsynonymous single nucleotide variant rs41310883 (c.524C>T, p.Thr175Met) in TUFT1 gene was found to co-segregate perfectly with MTP I OA. The role of TUFT1 and the relevance of the identified variant in pathogenesis of MTP I OA were further assessed using functional in vitro analyses. The variant reduced TUFT1 mRNA and tuftelin protein expression in HEK293 cells. ATDC5 cells overexpressing wild type (wt) or mutant TUFT1 were cultured in calcifying conditions and chondrogenic differentiation was found to be inhibited in both cell populations, as indicated by decreased marker gene expression when compared with the empty vector control cells. Also, the formation of cartilage nodules was diminished in both TUFT1 overexpressing ATDC5 cell populations. At the end of the culturing period the calcium content of the extracellular matrix was significantly increased in cells overexpressing mutant TUFT1 compared to cells overexpressing wt TUFT1 and control cells, while the proteoglycan content was reduced. These data imply that overexpression of TUFT1 in ATDC5 inhibits chondrogenic differentiation, and the identified variant may contribute to the pathogenesis of OA by increasing calcification and reducing amount of proteoglycans in the articular cartilage extracellular matrix thus making cartilage susceptible for degeneration and osteophyte formation.
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Affiliation(s)
- Eeva Sliz
- Center for Life Course Health Research, Faculty of Medicine, University of Oulu, Oulu, Finland
- Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Mari Taipale
- Center for Life Course Health Research, Faculty of Medicine, University of Oulu, Oulu, Finland
- Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Maiju Welling
- Center for Life Course Health Research, Faculty of Medicine, University of Oulu, Oulu, Finland
- Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, Finland
- Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
| | - Sini Skarp
- Center for Life Course Health Research, Faculty of Medicine, University of Oulu, Oulu, Finland
- Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Viivi Alaraudanjoki
- Research Unit of Oral Health Sciences, University of Oulu, University of Oulu, Oulu, Finland
| | - Jaakko Ignatius
- Department of Clinical Genetics, Turku University Hospital, Turku, Finland
| | - Lloyd Ruddock
- Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Ritva Nissi
- Department of Obstetrics and Gynecology, Oulu University Hospital, Oulu, Finland
| | - Minna Männikkö
- Center for Life Course Health Research, Faculty of Medicine, University of Oulu, Oulu, Finland
- Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, Finland
- * E-mail:
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Kienhorst LBE, Janssens HJEM, Fransen J, van de Lisdonk EH, Janssen M. Arthritis of the first metatarsophalangeal joint is not always gout: a prospective cohort study in primary care patients. Joint Bone Spine 2014; 81:342-6. [PMID: 24468668 DOI: 10.1016/j.jbspin.2013.12.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2013] [Accepted: 12/02/2013] [Indexed: 01/17/2023]
Abstract
OBJECTIVES Arthritis of the first metatarsophalangeal joint has been considered pathognomonic for gout, but it is unknown how frequently other forms of arthritis occur in this joint. The aims were to determine the validity of the general practitioner's clinical diagnosis using joint fluid analysis as the reference test, the prevalence of other diagnoses than gout, and the signs and symptoms that discriminate between gout and non-gout patients. METHODS This prospective cohort study comprised primary care patients with monoarthritis of the first metatarsophalangeal joint. After patient recruitment by general practitioners, patients' characteristics were collected by a rheumatologist. Joint fluid was analyzed for the presence of monosodium urate-crystals. If crystals were absent, patients entered a follow-up period of 6 years, or until a definite diagnosis. If during follow-up crystals were identified, the patient was classified as already having gout at baseline assessment. RESULTS One hundred and fifty-nine primary care patients were included. At baseline the clinical diagnosis was gout in 98%. The positive and negative predictive values of the diagnosis of gout were 0.79 and 0.75, respectively. After follow-up 77% had gout, 8% had another rheumatic disease, and 15% had a transient unspecified monoarthritis. Gout patients had discriminating signs and symptoms from non-gout patients. CONCLUSIONS Gout is an important but certainly not an exclusive cause of arthritis of the first metatarsophalangeal joint.
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Affiliation(s)
- Laura B E Kienhorst
- Department of Rheumatology, Rijnstate Hospital, Arnhem, PO Box 8, 6880 AA, Velp, The Netherlands.
| | - Hein J E M Janssens
- Department of Primary and Community Care, Radboud University Medical Center, PO Box 9101, 6500 HB, Nijmegen, The Netherlands; Department of Clinical Research, Rijnstate Hospital, Arnhem, PO Box 8, 6880 AA, Velp, The Netherlands
| | - Jaap Fransen
- Department of Rheumatology, Radboud University Medical Center, PO Box 9101, 6500 HB, Nijmegen, The Netherlands
| | - Eloy H van de Lisdonk
- Department of Primary and Community Care, Radboud University Medical Center, PO Box 9101, 6500 HB, Nijmegen, The Netherlands
| | - Matthijs Janssen
- Department of Rheumatology, Rijnstate Hospital, Arnhem, PO Box 8, 6880 AA, Velp, The Netherlands
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