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Zhu Y, Zhao T, Wu Y, Xie S, Sun W, Wu J. ZNF862 induces cytostasis and apoptosis via the p21-RB1 and Bcl-xL-Caspase 3 signaling pathways in human gingival fibroblasts. J Periodontal Res 2024; 59:599-610. [PMID: 38482719 DOI: 10.1111/jre.13250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 12/06/2023] [Accepted: 02/15/2024] [Indexed: 05/24/2024]
Abstract
OBJECTIVE This study investigates the effects of ZNF862 on the proliferation and apoptosis of human gingival fibroblasts and their related mechanisms. BACKGROUND As a major transcription factor family, zinc finger proteins (ZFPs) regulate cell differentiation, growth, and apoptosis through their conserved zinc finger motifs, which allow high flexibility and specificity in gene regulation. In our previous study, ZNF862 mutation was associated with hereditary gingival fibromatosis. Nevertheless, little is known about the biological function of ZNF862. Therefore, this study was aimed to reveal intracellular localization of ZNF862, the influence of ZNF862 on the growth and apoptosis of human gingival fibroblasts (HGFs) and its potential related mechanisms. METHODS Immunohistochemistry, immunofluorescence staining, and western blotting were performed to determine the intracellular localization of ZNF862 in HGFs. HGFs were divided into three groups: ZNF862 overexpression group, ZNF862 interference group, and the empty vector control group. Then, the effects of ZNF862 on cell proliferation, migration, cell cycle, and apoptosis were evaluated. qRT-PCR and western blotting were performed to further explore the mechanism related to the proliferation and apoptosis of HGFs. RESULTS ZNF862 was found to be localized in the cytoplasm of HGFs. In vitro experiments revealed that ZNF862 overexpression inhibited HGFs proliferation and migration, induced cell cycle arrest at the G0/G1-phase and apoptosis. Whereas, ZNF862 knockdown promoted HGFs proliferation and migration, accelerated the transition from the G0/G1 phase into the S and G2/M phase and inhibited cell apoptosis. Mechanistically, the effects of ZNF862 on HGFs proliferation and apoptosis were noted to be dependent on inhibiting the cyclin-dependent kinase inhibitor 1A (p21)-retinoblastoma 1 (RB1) signaling pathway and enhancing the B-cell lymphoma-extra-large (Bcl-xL)-Caspase 3 signaling pathway. CONCLUSION Our results for the first time reveal that ZNF862 is localized in the cytoplasm of HGFs. ZNF862 can inhibit the proliferation of HGFs by inhibiting the p21-RB1 signaling pathway, and it also promotes the apoptosis of HGFs by enhancing the Bcl-xL-Caspase 3 signaling pathway.
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Affiliation(s)
- Yaoyao Zhu
- Department of Periodontology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Research Institute of Stomatology, Nanjing University, Nanjing, China
- Central Laboratory of Stomatology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Research Institute of Stomatology, Nanjing University, Nanjing, China
| | - Tian Zhao
- Department of Periodontology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Research Institute of Stomatology, Nanjing University, Nanjing, China
| | - Yongkang Wu
- Department of Periodontology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Research Institute of Stomatology, Nanjing University, Nanjing, China
- Central Laboratory of Stomatology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Research Institute of Stomatology, Nanjing University, Nanjing, China
| | - Sijing Xie
- Department of Cariology and Endodontics, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Research Institute of Stomatology, Nanjing University, Nanjing, China
| | - Weibin Sun
- Department of Periodontology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Research Institute of Stomatology, Nanjing University, Nanjing, China
| | - Juan Wu
- Department of Periodontology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Research Institute of Stomatology, Nanjing University, Nanjing, China
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Chen J, Xu X, Chen S, Lu T, Zheng Y, Gan Z, Shen Z, Ma S, Wang D, Su L, He F, Shang X, Xu H, Chen D, Zhang L, Xiong F. Double heterozygous pathogenic mutations in KIF3C and ZNF513 cause hereditary gingival fibromatosis. Int J Oral Sci 2023; 15:46. [PMID: 37752101 PMCID: PMC10522663 DOI: 10.1038/s41368-023-00244-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 08/23/2023] [Accepted: 08/24/2023] [Indexed: 09/28/2023] Open
Abstract
Hereditary gingival fibromatosis (HGF) is a rare inherited condition with fibromatoid hyperplasia of the gingival tissue that exhibits great genetic heterogeneity. Five distinct loci related to non-syndromic HGF have been identified; however, only two disease-causing genes, SOS1 and REST, inducing HGF have been identified at two loci, GINGF1 and GINGF5, respectively. Here, based on a family pedigree with 26 members, including nine patients with HGF, we identified double heterozygous pathogenic mutations in the ZNF513 (c.C748T, p.R250W) and KIF3C (c.G1229A, p.R410H) genes within the GINGF3 locus related to HGF. Functional studies demonstrated that the ZNF513 p.R250W and KIF3C p.R410H variants significantly increased the expression of ZNF513 and KIF3C in vitro and in vivo. ZNF513, a transcription factor, binds to KIF3C exon 1 and participates in the positive regulation of KIF3C expression in gingival fibroblasts. Furthermore, a knock-in mouse model confirmed that heterozygous or homozygous mutations within Zfp513 (p.R250W) or Kif3c (p.R412H) alone do not led to clear phenotypes with gingival fibromatosis, whereas the double mutations led to gingival hyperplasia phenotypes. In addition, we found that ZNF513 binds to the SOS1 promoter and plays an important positive role in regulating the expression of SOS1. Moreover, the KIF3C p.R410H mutation could activate the PI3K and KCNQ1 potassium channels. ZNF513 combined with KIF3C regulates gingival fibroblast proliferation, migration, and fibrosis response via the PI3K/AKT/mTOR and Ras/Raf/MEK/ERK pathways. In summary, these results demonstrate ZNF513 + KIF3C as an important genetic combination in HGF manifestation and suggest that ZNF513 mutation may be a major risk factor for HGF.
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Affiliation(s)
- Jianfan Chen
- Department of Medical Genetics, Experimental Education/Administration Center, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
- Experimental Department of Obstetrics and Gynecology Institute, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Xueqing Xu
- Department of Precision Medicine, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Song Chen
- Department of Medical Genetics, Experimental Education/Administration Center, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Ting Lu
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yingchun Zheng
- Department of Medical Genetics, Experimental Education/Administration Center, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Zhongzhi Gan
- Department of Medical Genetics, Experimental Education/Administration Center, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Zongrui Shen
- Department of Medical Genetics, Experimental Education/Administration Center, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Shunfei Ma
- Department of Medical Genetics, Experimental Education/Administration Center, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Duocai Wang
- Department of Medical Genetics, Experimental Education/Administration Center, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Leyi Su
- Department of Medical Genetics, Experimental Education/Administration Center, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Fei He
- Department of Medical Genetics, Experimental Education/Administration Center, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Xuan Shang
- Department of Medical Genetics, Experimental Education/Administration Center, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Huiyong Xu
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Dong Chen
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Leitao Zhang
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China.
| | - Fu Xiong
- Department of Medical Genetics, Experimental Education/Administration Center, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China.
- Guangdong Provincial Key Laboratory of Single Cell Technology and Application, Guangzhou, China.
- Department of Fetal Medicine and Prenatal Diagnosis, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
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3
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Klonowski J, Liang Q, Coban-Akdemir Z, Lo C, Kostka D. aenmd: annotating escape from nonsense-mediated decay for transcripts with protein-truncating variants. Bioinformatics 2023; 39:btad556. [PMID: 37688563 PMCID: PMC10534055 DOI: 10.1093/bioinformatics/btad556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 07/13/2023] [Accepted: 09/07/2023] [Indexed: 09/11/2023] Open
Abstract
SUMMARY DNA changes that cause premature termination codons (PTCs) represent a large fraction of clinically relevant pathogenic genomic variation. Typically, PTCs induce transcript degradation by nonsense-mediated mRNA decay (NMD) and render such changes loss-of-function alleles. However, certain PTC-containing transcripts escape NMD and can exert dominant-negative or gain-of-function (DN/GOF) effects. Therefore, systematic identification of human PTC-causing variants and their susceptibility to NMD contributes to the investigation of the role of DN/GOF alleles in human disease. Here we present aenmd, a software for annotating PTC-containing transcript-variant pairs for predicted escape from NMD. aenmd is user-friendly and self-contained. It offers functionality not currently available in other methods and is based on established and experimentally validated rules for NMD escape; the software is designed to work at scale, and to integrate seamlessly with existing analysis workflows. We applied aenmd to variants in the gnomAD, Clinvar, and GWAS catalog databases and report the prevalence of human PTC-causing variants in these databases, and the subset of these variants that could exert DN/GOF effects via NMD escape. AVAILABILITY AND IMPLEMENTATION aenmd is implemented in the R programming language. Code is available on GitHub as an R-package (github.com/kostkalab/aenmd.git), and as a containerized command-line interface (github.com/kostkalab/aenmd_cli.git).
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Affiliation(s)
- Jonathan Klonowski
- Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15201, United States
| | - Qianqian Liang
- Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15201, United States
| | - Zeynep Coban-Akdemir
- Department of Epidemiology, Human Genetics and Environmental Sciences, University of Texas School of Public Health, Houston, TX 77030, United States
| | - Cecilia Lo
- Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15201, United States
| | - Dennis Kostka
- Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15201, United States
- Department of Computational & Systems Biology and Center for Evolutionary Biology and Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA 15260,United States
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Bektaş-Kayhan K, Selvi F, Koca-Ünsal RB. Surgical treatment of hereditary gingival fibromatosis by diode laser: Report of five rare cases in the same family. SPECIAL CARE IN DENTISTRY 2023; 43:539-545. [PMID: 36404272 DOI: 10.1111/scd.12804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 10/16/2022] [Accepted: 11/07/2022] [Indexed: 11/22/2022]
Abstract
The pathogenesis of hereditary gingival fibromatosis (HGF) is largely unknown; however, the removal of excess tissue may often be necessary as it often causes aesthetic and functional problems. Gingivectomy is usually a treatment option that can be performed using a scalpel, cryotherapy, electrosurgery, or laser. This paper aims to evaluate the results of HGF treatments using a diode laser of five people from the same family. Three members of a family of five (two females and three males; 9-36 years old) underwent gingivectomy with a 3 W 300-micron fiber-tipped diode laser (Doctor Smile, Vicenza, Italy) at 810 nm wavelength. While all teeth of one member were extracted, the other member refused treatment. Relapse occurred in three members due to poor oral hygiene. The diode laser was reapplied and oral hygiene instructions were repeated. Patients were followed during the postoperative period for up to two years. HGF is a rare condition that clinicians should pay attention to in the diagnosis, treatment, and follow-ups. Since recurrences are due to dental plaque, oral hygiene instructions are essential and compliance is mandatory. Although there are many treatment approaches, the diode laser is the most indicated method due to many advantages such as providing a bloodless and more sterile operation field, performing an atraumatic surgery, ensuring earlier and ideal recovery, and minimizing postoperative pain.
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Affiliation(s)
- Kıvanç Bektaş-Kayhan
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Istanbul University, Fatih, Istanbul, Turkey
| | - Fırat Selvi
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Istanbul University, Fatih, Istanbul, Turkey
| | - Revan Birke Koca-Ünsal
- Department of Periodontology, Faculty of Dentistry, University of Kyrenia, Kyrenia, Cyprus
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5
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Salomatina AS, Yasko LA, Kurnikova MA, Mareeva YM, Abasov RK, Gegeliya NV, Mitrofanova AM, Usman NY, Novichkova GA, Druy AE. Case Report: Two clinical cases of Wilms tumor comorbid to gingival fibromatosis in young children with constitutionally mutated REST. Front Oncol 2023; 13:1192489. [PMID: 37427114 PMCID: PMC10326162 DOI: 10.3389/fonc.2023.1192489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 05/30/2023] [Indexed: 07/11/2023] Open
Abstract
Introduction Nephroblastoma (Wilms tumor (WT)) is an embryonal tumor accounting for >90% of pediatric renal cancers. About 10% of WTs harbor pathogenic germline mutations. The REST gene, classified as a putative tumor suppressor, is affected in 2% of WTs. High-throughput molecular methods facilitate advanced diagnostics of cancer. In addition to this, germline mutations in REST are also associated with familial gingival fibromatosis (GFM). Reciprocally, none of the articles on RESTmut WT mentions GFM as a comorbid condition. This report provides unique evidence on the WT-GFM comorbidity in RESTmut carriers. Case presentation Patient 1 (a 5-year-old boy with unilateral WT) is a proband, who has two healthy siblings. Patient 2 (a 4-year-old girl with bilateral WT) is a proband from in vitro fertilization (IVF) triplets, with a sister and brother without WT. We analyzed probands' DNA extracted from peripheral blood leucocytes with a custom-targeted next-generation sequencing (NGS)-198 gene panel. The detected variants were checked in family members by Sanger sequencing. Patient 1 had a pathogenic germline mutation in REST: c.1035_1036insTA, p.(E346*), as did his mother and both brothers. There were two other WT cases in this family (proband's maternal uncles). Patient 2 had a pathogenic germline variant in REST: c.2668_2671del, p.(E891Pfs*6), as well as her sister. The mutation was probably inherited from their deceased father, as he had gingival fibromatosis. Family members with REST mutations from both families had gingival fibromatosis. A somatic REST c.663C>A p.C221* mutation was identified in one patient with WT. At the moment both patients with WT are under dynamic observation without signs of the disease. Conclusion Here, we describe two clinical cases of WT in nonrelated young children with germline-inactivating REST variants identified by next-generation sequencing. Both patients present with familial gingival fibromatosis, regarded as clinically useful comorbidity indicative of the tumor predisposition syndrome. The two cases illustrate Wilms tumor-gingival fibromatosis comorbidity in carriers of germline-inactivated REST alleles previously identified as a predisposition factor for both conditions.
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Affiliation(s)
- Anastasiya S. Salomatina
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia
| | - Liudmila A. Yasko
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia
| | - Maria A. Kurnikova
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia
| | - Yulia M. Mareeva
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia
| | - Ruslan K. Abasov
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia
| | - Nina V. Gegeliya
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia
| | - Anna M. Mitrofanova
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia
| | - Natalia Y. Usman
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia
| | - Galina A. Novichkova
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia
| | - Alexander E. Druy
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia
- Research Institute of Medical Cell Technologies, Yekaterinburg, Russia
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6
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Nakano Y, Bánfi B. The cause of Jones syndrome put to REST: a mutation in the REST gene causes gingival fibromatosis and hearing loss. Eur J Hum Genet 2023; 31:377-379. [PMID: 36710272 PMCID: PMC10133212 DOI: 10.1038/s41431-023-01292-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 01/16/2023] [Indexed: 01/31/2023] Open
Affiliation(s)
- Yoko Nakano
- Department of Anatomy and Cell Biology, Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA
- Inflammation Program, Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - Botond Bánfi
- Department of Anatomy and Cell Biology, Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA.
- Inflammation Program, Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA.
- Department of Otolaryngology-Head and Neck Surgery, Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA.
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA.
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7
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Klonowski J, Liang Q, Coban-Akdemir Z, Lo C, Kostka D. aenmd: Annotating escape from nonsense-mediated decay for transcripts with protein-truncating variants. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.17.533185. [PMID: 36993377 PMCID: PMC10055276 DOI: 10.1101/2023.03.17.533185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
DNA changes that cause premature termination codons (PTCs) represent a large fraction of clinically relevant pathogenic genomic variation. Typically, PTCs induce a transcript's degradation by nonsense-mediated mRNA decay (NMD) and render such changes loss-of-function alleles. However, certain PTC-containing transcripts escape NMD and can exert dominant-negative or gain-of-function (DN/GOF) effects. Therefore, systematic identification of human PTC-causing variants and their susceptibility to NMD contributes to the investigation of the role of DN/GOF alleles in human disease. Here we present aenmd, a software for annotating PTC-containing transcript-variant pairs for predicted escape from NMD. aenmd is user-friendly and self-contained. It offers functionality not currently available in other methods and is based on established and experimentally validated rules for NMD escape; the software is designed to work at scale, and to integrate seamlessly with existing analysis workflows. We applied aenmd to variants in the gnomAD, Clinvar, and GWAS catalog databases and report the prevalence of human PTC-causing variants in these databases, and the subset of these that could exert DN/GOF effects via NMD escape. Availability and implementation: aenmd is implemented in the R programming language. Code is available on GitHub as an R package (github.com/kostkalab/aenmd.git), and as a containerized command-line interface (github.com/kostkalab/aenmd_cli.git).
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Affiliation(s)
- Jonathan Klonowski
- Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Qianqian Liang
- Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Zeynep Coban-Akdemir
- Department of Epidemiology, Human Genetics and Environmental Sciences, University of Texas School of Public Health, Houston, TX, USA
| | - Cecilia Lo
- Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Dennis Kostka
- Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Department of Computational & Systems Biology and Center for Evolutionary Biology and Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
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Machado RA, de Andrade RS, Pêgo SPB, Krepischi ACV, Coletta RD, Martelli-Júnior H. New evidence of genetic heterogeneity causing hereditary gingival fibromatosis and ALK and CD36 as new candidate genes. J Periodontol 2023; 94:108-118. [PMID: 35665929 DOI: 10.1002/jper.22-0219] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 05/25/2022] [Accepted: 05/28/2022] [Indexed: 02/02/2023]
Abstract
BACKGROUND Hereditary gingival fibromatosis (HGF) is an uncommon genetic condition characterized by slow but progressive fibrous, non-hemorrhagic, and painless growth of the gingival tissues due to the increased deposition of collagen and other macromolecules of the extracellular matrix. HGF occurs in approximately 1:750,000 individuals and can exhibit dominant or recessive inheritance. To date, five loci (2p21-p22, 2p22.3-p23.3, 4q12, 5q13-q22, and 11p15) and three genes [REST (RE1-silencing transcription factor), SOS1 (Son-of-Sevenless-1), and ZNF862 (zinc finger protein 862 gene)] have been associated with HGF. Here, our study aimed to identify genetic variants associated with HGF by applying whole-exome sequencing (WES) and bioinformatics analyses. METHODS Thirteen Brazilian individuals with HGF and nine relatives without HGF from four unrelated families were chosen for our investigation. Blood collected from the patients and their relatives were used for WES. Five Web-available tools, namely, CADD, PolyPhen, SIFT, Mutation Taster, and Franklin's algorithms, were used to predict protein damage. RESULTS WES revealed pathogenic variants affecting the known HGF genes REST (c.1491_1492delAG) and SOS1 (c.3265_3266insTAAC) in two families. Additionally, potentially pathogenic variants segregating in the other two families were mapped to ALK receptor tyrosine kinase gene (ALK) (c.361C > T) and to collagen type I receptor and thrombospondin receptor gene (CD36) (c.1133G > T). CONCLUSION Our findings reinforce the high genetic heterogeneity of HGF, identifying new variants in HGF known genes (REST and SOS1) and ALK and CD36 as new genes that cause HGF.
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Affiliation(s)
- Renato Assis Machado
- Department of Oral Diagnosis, School of Dentistry, University of Campinas (FOP/UNICAMP), Piracicaba, São Paulo, Brazil.,Hospital for Rehabilitation of Craniofacial Anomalies, University of São Paulo, Bauru, São Paulo, Brazil
| | - Rodrigo Soares de Andrade
- Department of Oral Diagnosis, School of Dentistry, University of Campinas (FOP/UNICAMP), Piracicaba, São Paulo, Brazil
| | - Sabina Pena Borges Pêgo
- Stomatology Clinic, Dental School, State University of Montes Claros (Unimontes), Montes Claros, Minas Gerais, Brazil
| | - Ana Cristina Victorino Krepischi
- Department of Genetics and Evolutionary Biology, Human Genome and Stem-Cell Research Center, Institute of Biosciences, University of São Paulo (IB/USP), São Paulo, Brazil
| | - Ricardo D Coletta
- Department of Oral Diagnosis, School of Dentistry, University of Campinas (FOP/UNICAMP), Piracicaba, São Paulo, Brazil.,Graduate Program in Oral Biology, School of Dentistry, University of Campinas, Piracicaba, São Paulo, Brazil
| | - Hercílio Martelli-Júnior
- Stomatology Clinic, Dental School, State University of Montes Claros (Unimontes), Montes Claros, Minas Gerais, Brazil.,Center for Rehabilitation of Craniofacial Anomalies, Dental School, University of José Rosario Vellano (Unifenas), Alfenas, Minas Gerais, Brazil
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9
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Rahikkala E, Julku J, Koskinen S, Keski-Filppula T, Weissgraeber S, Bertoli-Avella AM, Häkli S, Kraatari-Tiri M. Pathogenic REST variant causing Jones syndrome and a review of the literature. Eur J Hum Genet 2022; 31:469-473. [PMID: 36509837 PMCID: PMC10133349 DOI: 10.1038/s41431-022-01258-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 10/30/2022] [Accepted: 11/24/2022] [Indexed: 12/15/2022] Open
Abstract
Jones syndrome is a rare dominantly inherited syndrome characterized by gingival fibromatosis and progressive sensorineural hearing loss becoming symptomatic in the second decade of life. Here, we report a father and his two daughters presenting with a typical Jones syndrome (OMIM %135550) phenotype. Exome sequencing identified a repressor element 1-silencing transcription factor (REST, OMIM *600571) (NM_005612.5) c.2670_2673del p.(Glu891Profs*6) heterozygous variant segregating with Jones syndrome in the family. We review the clinical data from all previously published patients with Jones syndrome and previously published patients with pathogenic REST variants associated with gingival fibromatosis or sensorineural hearing loss. This study suggests that pathogenic REST variants cause Jones syndrome.
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Affiliation(s)
- Elisa Rahikkala
- PEDEGO Research Unit, University of Oulu, Oulu, Finland. .,Department of Clinical Genetics and Medical Research Center, Oulu University Hospital, Oulu, Finland.
| | - Johanna Julku
- Department of Oral and Maxillofacial Diseases, Oulu University Hospital, Oulu, Finland
| | - Sari Koskinen
- Department of Oral and Maxillofacial Diseases, Oulu University Hospital, Oulu, Finland
| | - Tommi Keski-Filppula
- PEDEGO Research Unit, University of Oulu, Oulu, Finland.,Department of Clinical Genetics and Medical Research Center, Oulu University Hospital, Oulu, Finland
| | | | | | - Sanna Häkli
- PEDEGO Research Unit, University of Oulu, Oulu, Finland.,Department of Otorhinolaryngology and Phoniatrics, Oulu University Hospital, Oulu, Finland
| | - Minna Kraatari-Tiri
- PEDEGO Research Unit, University of Oulu, Oulu, Finland.,Department of Clinical Genetics and Medical Research Center, Oulu University Hospital, Oulu, Finland
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10
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Zheng F, Chen G, Deng H. Identifying the focuses of hereditary gingival fibromatosis with bioinformatics strategies. Am J Transl Res 2022; 14:3741-3749. [PMID: 35836867 PMCID: PMC9274550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 05/10/2022] [Indexed: 06/15/2023]
Abstract
OBJECTIVE The objective of this study was to detect the undiscovered bioinformatics information about hereditary gingival fibromatosis and find focuses from published datasets. METHODS Two published datasets containing gingival tissue expression profiles of HGF and healthy groups were collected from GEO database. GSE4250 was utilized for cardinality analysis, including the differentially expressed gene analysis, enrichment analyses, hierarchical clustering analysis, and protein-protein interaction network. Key genes were obtained from the protein interaction network plot. GSE58482 was utilized for validation. RESULTS Analysis of the expression profiling by array, there were 785 genes (380 upregulated genes, 405 downregulated genes) expressed differentially between HGF gingival tissue and healthy gingival tissue. KEGG and GO enrichment analyses obtained candidate pathways. Differentially expressed genes were associated with activated pathways like skin barrier pathway and cornified envelope pathway. Repressed pathways included ion homeostasis pathway, receptor ligand activity pathway, and cell population proliferation pathway. Key genes such as F2R, TGM7, and MMP13 were confirmed with differential expression by external validation. CONCLUSION By bioinformatics approaches, we found new discoveries including several pathways and key genes. These discoveries deserve attention and research in the future.
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Affiliation(s)
- Fumin Zheng
- Department of Periodontics, School and Hospital of Stomatology, Wenzhou Medical UniversityXueyuan West Road, Lucheng District, Wenzhou 325027, Zhejiang, P. R. China
| | - Guangtian Chen
- Department of Stomatology, The First Affiliated Hospital of Wenzhou Medical UniversityNanbaixiang Ouhai District, Wenzhou 325000, Zhejiang, P. R. China
| | - Hui Deng
- Department of Periodontics, School and Hospital of Stomatology, Wenzhou Medical UniversityXueyuan West Road, Lucheng District, Wenzhou 325027, Zhejiang, P. R. China
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11
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Afonso RA, Godinho GV, Silva CA, Silva EJ, Volpato LE. Hereditary Gingival Fibromatosis and Developmental Anomalies: A Case Report. Cureus 2022; 14:e24219. [PMID: 35602830 PMCID: PMC9117822 DOI: 10.7759/cureus.24219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2022] [Indexed: 11/07/2022] Open
Abstract
Hereditary gingival fibromatosis is the most common genetic form of gingival fibromatosis that develops as a slow, progressive, benign, localized, or generalized enlargement of the keratinized gingiva. It is a genetically heterogeneous disorder transmitted as an autosomal dominant or autosomal recessive trait or appears sporadically. Here, we report a case of a male patient with generalized gingival hyperplasia with great tissue extension to the palatal region, bilateral mandibular torus, bilateral exostosis in the maxillary posterior region, anterior open bite, and diastema in anterior maxilla and mandible teeth. The mucous membranes were healthy and normal colored, with pale pink gums and firm teeth upon palpation. Computed tomography also revealed images suggestive of supernumerary teeth. The patient reported that his mother and a maternal aunt have the same gingival condition. Considering the gingival characteristic, the patient's family history, and the absence of other possible etiological factors of gingival hyperplasia, the diagnostic hypothesis was hereditary gingival fibromatosis. The surgical removal of the enlarged tissue through gingivectomy with internal bevel, osteoplasty, and removal of supernumerary teeth with a subsequent filling of the surgical sites with platelet and leukocyte-rich fibrin membranes in the same surgical time presented good functional and aesthetic results for the young patient with hereditary gingival fibromatosis. It is a viable possibility for clinical management of similar cases.
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Affiliation(s)
- Rhaina A Afonso
- Department of Dentistry, Hospital de Câncer de Mato Grosso, Cuiabá, BRA
| | - Géssica V Godinho
- Department of Dentistry, Hospital de Câncer de Mato Grosso, Cuiabá, BRA
| | - Cristhiane A Silva
- Department of Environment and Health, Universidade de Cuiabá, Cuiabá, BRA
| | - Everton J Silva
- Department of Dentistry, Hospital de Câncer de Mato Grosso, Cuiabá, BRA
| | - Luiz E Volpato
- Department of Dentistry, Hospital de Câncer de Mato Grosso, Cuiabá, BRA
- Cuiabá Dental School, Universidade de Cuiabá, Cuiabá, BRA
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12
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Wu J, Chen D, Huang H, Luo N, Chen H, Zhao J, Wang Y, Zhao T, Huang S, Ren Y, Zhai T, Sun W, Li H, Li W. A novel gene ZNF862 causes hereditary gingival fibromatosis. eLife 2022; 11:66646. [PMID: 35142290 PMCID: PMC8856651 DOI: 10.7554/elife.66646] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 02/09/2022] [Indexed: 11/18/2022] Open
Abstract
Hereditary gingival fibromatosis (HGF) is the most common genetic form of gingival fibromatosis which is featured as a localized or generalized overgrowth of gingivae. Currently two genes (SOS1 and REST), as well as four loci (2p22.1, 2p23.3–p22.3, 5q13–q22, and 11p15), have been identified as associated with HGF in a dominant inheritance pattern. Here, we report 13 individuals with autosomal-dominant HGF from a four-generation Chinese family. Whole-exome sequencing followed by further genetic co-segregation analysis was performed for the family members across three generations. A novel heterozygous missense mutation (c.2812G > A) in zinc finger protein 862 gene (ZNF862) was identified, and it is absent among the population as per the Genome Aggregation Database. The functional study supports a biological role of ZNF862 for increasing the profibrotic factors particularly COL1A1 synthesis and hence resulting in HGF. Here, for the first time we identify the physiological role of ZNF862 for the association with the HGF.
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Affiliation(s)
- Juan Wu
- Department of Periodontology, Medical School of Nanjing University, Nanjing, China
| | - Dongna Chen
- Clinical research, BGI Genomics, Shenzhen, China
| | - Hui Huang
- Clinical research, BGI Genomics, Shenzhen, China
| | - Ning Luo
- Department of Periodontology, Medical School of Nanjing University, Nanjing, China
| | | | - Junjie Zhao
- Department of Periodontology, Medical School of Nanjing University, Nanjing, China
| | - Yanyan Wang
- Clinical research, BGI Genomics, Shenzhen, China
| | - Tian Zhao
- Department of Periodontology, Medical School of Nanjing University, shenzhen, China
| | - Siyuan Huang
- Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China
| | - Yang Ren
- Department of Periodontology, Medical School of Nanjing University, Nanjing, China
| | - Teng Zhai
- Clinical research, BGI Genomics, shenzhen, China
| | - Weibin Sun
- Department of Periodontology, Medical School of Nanjing University, shenzhen, China
| | - Houxuan Li
- Department of Periodontology, Medical School of Nanjing University, Nanjing, China
| | - Wei Li
- Clinical Research, BGI Genomics, Shen zhen, China
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13
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Ghafouri-Fard S, Poulet C, Malaise M, Abak A, Mahmud Hussen B, Taheriazam A, Taheri M, Hallajnejad M. The Emerging Role of Non-Coding RNAs in Osteoarthritis. Front Immunol 2021; 12:773171. [PMID: 34912342 PMCID: PMC8666442 DOI: 10.3389/fimmu.2021.773171] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 11/10/2021] [Indexed: 12/16/2022] Open
Abstract
Osteoarthritis (OS) is the most frequent degenerative condition in the joints, disabling many adults. Several abnormalities in the articular cartilage, subchondral bone, synovial tissue, and meniscus have been detected in the course of OA. Destruction of articular cartilage, the formation of osteophytes, subchondral sclerosis, and hyperplasia of synovial tissue are hallmarks of OA. More recently, several investigations have underscored the regulatory roles of non-coding RNAs (ncRNAs) in OA development. Different classes of non-coding RNAs, including long ncRNAs (lncRNAs), microRNAs (miRNAs), and circular RNAs (circRNAs), have been reported to affect the development of OA. The expression level of these transcripts has also been used as diagnostic tools in OA. In the present article, we aimed at reporting the role of these transcripts in this process. We need to give a specific angle on the pathology to provide meaningful thoughts on it.
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Affiliation(s)
- Soudeh Ghafouri-Fard
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Christophe Poulet
- Department of Rheumatology, University Hospital of Liège (CHULiege), Liège, Belgium
- Fibropôle Research Group, University Hospital of Liège (CHULiege), Liège, Belgium
- GIGA-I3 Research Group, GIGA Institute, University of Liège (ULiege) and University Hospital of Liège (CHULiege), Liège, Belgium
| | - Michel Malaise
- Department of Rheumatology, University Hospital of Liège (CHULiege), Liège, Belgium
- Fibropôle Research Group, University Hospital of Liège (CHULiege), Liège, Belgium
- GIGA-I3 Research Group, GIGA Institute, University of Liège (ULiege) and University Hospital of Liège (CHULiege), Liège, Belgium
| | - Atefe Abak
- Men’s Health and Reproductive Health Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Bashdar Mahmud Hussen
- Department of Pharmacognosy, College of Pharmacy, Hawler Medical University, Erbil, Iraq
- Center of Research and Strategic Studies, Lebanese French University, Erbil, Iraq
| | - Afshin Taheriazam
- Department of Orthopedics, Tehran Medical Sciences Branch, Islamic Azad University, Tehran, Iran
| | - Mohammad Taheri
- Institute of Human Genetics, Jena University Hospital, Jena, Germany
- *Correspondence: Mohammad Taheri, ; Mohammad Hallajnejad,
| | - Mohammad Hallajnejad
- Skull Base Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- *Correspondence: Mohammad Taheri, ; Mohammad Hallajnejad,
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14
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Strzelec K, Dziedzic A, Łazarz-Bartyzel K, Grabiec AM, Gutmajster E, Kaczmarzyk T, Plakwicz P, Gawron K. Clinics and genetic background of hereditary gingival fibromatosis. Orphanet J Rare Dis 2021; 16:492. [PMID: 34819125 PMCID: PMC8611899 DOI: 10.1186/s13023-021-02104-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Accepted: 11/06/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Hereditary gingival fibromatosis (HGF) is a rare condition characterized by slowly progressive overgrowth of the gingiva. The severity of overgrowth may differ from mild causing phonetic and masticatory issues, to severe resulting in diastemas or malposition of teeth. Both, autosomal-dominant and autosomal-recessive forms of HGF are described. The aim of this review is a clinical overview, as well as a summary and discussion of the involvement of candidate chromosomal regions, pathogenic variants of genes, and candidate genes in the pathogenesis of HGF. The loci related to non-syndromic HGF have been identified on chromosome 2 (GINGF, GINGF3), chromosome 5 (GINGF2), chromosome 11 (GINGF4), and 4 (GINGF5). Of these loci, pathogenic variants of the SOS-1 and REST genes inducing HGF have been identified in the GINGF and the GINGF5, respectively. Furthermore, among the top 10 clusters of genes ranked by enrichment score, ATP binding, and fibronectin encoding genes were proposed as related to HGF. CONCLUSION The analysis of clinical reports as well as translational genetic studies published since the late'90s indicate the clinical and genetic heterogeneity of non-syndromic HGF and point out the importance of genetic studies and bioinformatics of more numerous unrelated families to identify novel pathogenic variants potentially inducing HGF. This strategy will help to unravel the molecular mechanisms as well as uncover specific targets for novel and less invasive therapies of this rare, orphan condition.
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Affiliation(s)
- Karolina Strzelec
- Department of Molecular Biology and Genetics, Faculty of Medical Sciences in Katowice, Medical University of Silesia, Medykow 18, 40-752, Katowice, Poland
| | - Agata Dziedzic
- Department of Molecular Biology and Genetics, Faculty of Medical Sciences in Katowice, Medical University of Silesia, Medykow 18, 40-752, Katowice, Poland
| | - Katarzyna Łazarz-Bartyzel
- Department of Periodontology and Oral Medicine, Medical College, Jagiellonian University, Kraków, Poland
| | - Aleksander M Grabiec
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland
| | - Ewa Gutmajster
- Department of Molecular Biology and Genetics, Faculty of Medical Sciences in Katowice, Medical University of Silesia, Medykow 18, 40-752, Katowice, Poland
| | - Tomasz Kaczmarzyk
- Department of Periodontology and Oral Medicine, Medical College, Jagiellonian University, Kraków, Poland.,Department of Oral Surgery, Medical College, Jagiellonian University, Kraków, Poland
| | - Paweł Plakwicz
- Department of Periodontology and Oral Diseases, Faculty of Dentistry, Medical University of Warsaw, Warsaw, Poland
| | - Katarzyna Gawron
- Department of Molecular Biology and Genetics, Faculty of Medical Sciences in Katowice, Medical University of Silesia, Medykow 18, 40-752, Katowice, Poland.
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15
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A Monoallelic Variant in REST Is Associated with Non-Syndromic Autosomal Dominant Hearing Impairment in a South African Family. Genes (Basel) 2021; 12:genes12111765. [PMID: 34828371 PMCID: PMC8618167 DOI: 10.3390/genes12111765] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 10/31/2021] [Accepted: 11/02/2021] [Indexed: 01/03/2023] Open
Abstract
Hearing impairment (HI) is a sensory disorder with a prevalence of 0.0055 live births in South Africa. DNA samples from a South African family presenting with progressive, autosomal dominant non-syndromic HI were subjected to whole-exome sequencing, and a novel monoallelic variant in REST [c.1244GC; p.(C415S)], was identified as the putative causative variant. The co-segregation of the variant was confirmed with Sanger Sequencing. The variant is absent from databases, 103 healthy South African controls, and 52 South African probands with isolated HI. In silico analysis indicates that the p.C415S variant in REST substitutes a conserved cysteine and results in changes to the surrounding secondary structure and the disulphide bonds, culminating in alteration of the tertiary structure of REST. Localization studies using ectopically expressed GFP-tagged Wild type (WT) and mutant REST in HEK-293 cells show that WT REST localizes exclusively to the nucleus; however, the mutant protein localizes throughout the cell. Additionally, mutant REST has an impaired ability to repress its known target AF1q. The data demonstrates that the identified mutation compromises the function of REST and support its implication in HI. This study is the second report, worldwide, to implicate REST in HI and suggests that it should be included in diagnostic HI panels.
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16
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Khayat MM, Hu J, Jiang Y, Li H, Chander V, Dawood M, Hansen AW, Li S, Friedman J, Cross L, Bijlsma EK, Ruivenkamp CA, Sansbury FH, Innis JW, Omark O’Shea J, Meng Q, Rosenfeld JA, McWalter K, Wangler MF, Lupski JR, Posey JE, Murdock D, Gibbs RA. AHDC1 missense mutations in Xia-Gibbs syndrome. HGG ADVANCES 2021; 2:100049. [PMID: 34950897 PMCID: PMC8694554 DOI: 10.1016/j.xhgg.2021.100049] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 08/04/2021] [Indexed: 12/19/2022] Open
Abstract
Xia-Gibbs syndrome (XGS; MIM: 615829) is a phenotypically heterogeneous neurodevelopmental disorder (NDD) caused by newly arising mutations in the AT-Hook DNA-Binding Motif-Containing 1 (AHDC1) gene that are predicted to lead to truncated AHDC1 protein synthesis. More than 270 individuals have been diagnosed with XGS worldwide. Despite the absence of an independent assay for AHDC1 protein function to corroborate potential functional consequences of rare variant genetic findings, there are also reports of individuals with XGS-like trait manifestations who have de novo missense AHDC1 mutations and who have been provided a molecular diagnosis of the disorder. To investigate a potential contribution of missense mutations to XGS, we mapped the missense mutations from 10 such individuals to the AHDC1 conserved protein domain structure and detailed the observed phenotypes. Five newly identified individuals were ascertained from a local XGS Registry, and an additional five were taken from external reports or databases, including one publication. Where clinical data were available, individuals with missense mutations all displayed phenotypes consistent with those observed in individuals with AHDC1 truncating mutations, including delayed motor milestones, intellectual disability (ID), hypotonia, and speech delay. A subset of the 10 reported missense mutations cluster in two regions of the AHDC1 protein with known conserved domains, likely representing functional motifs. Variants outside the clustered regions score lower for computational prediction of their likely damaging effects. Overall, de novo missense variants in AHDC1 are likely diagnostic of XGS when in silico analysis of their position relative to conserved regions is considered together with disease trait manifestations.
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Affiliation(s)
- Michael M. Khayat
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Jianhong Hu
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | - Yunyun Jiang
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | - He Li
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | - Varuna Chander
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Moez Dawood
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
- Medical Scientist Training Program, Baylor College of Medicine, Houston, TX, USA
| | - Adam W. Hansen
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Shoudong Li
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | - Jennifer Friedman
- UCSD Departments of Neuroscience and Pediatrics, Rady Children’s Hospital Division of Neurology, Rady Children’s Institute for Genomic Medicine, San Diego, CA, USA
| | - Laura Cross
- Department of Pediatrics and Genetics, Children’s Mercy Hospitals, Kansas City, MO, USA
| | - Emilia K. Bijlsma
- Department of Clinical Genetics, Leiden University Medical Center, Leiden, the Netherlands
| | | | - Francis H. Sansbury
- All Wales Medical Genomics Service, NHS Wales Cardiff and Vale University Health Board, Institute of Medical Genetics, University Hospital of Wales, Cardiff, UK
| | - Jeffrey W. Innis
- Departments of Human Genetics, Pediatrics, and Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | | | - Qingchang Meng
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | - Jill A. Rosenfeld
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | | | - Michael F. Wangler
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
- Texas Children’s Neurological Research Institute, Houston, TX, USA
| | - James R. Lupski
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
- Texas Children’s Hospital, Houston, TX, USA
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Jennifer E. Posey
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - David Murdock
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Richard A. Gibbs
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
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17
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Qian SJ, Huang QR, Chen RY, Mo JJ, Zhou LY, Zhao Y, Li B, Lai HC. Single-Cell RNA Sequencing Identifies New Inflammation-Promoting Cell Subsets in Asian Patients With Chronic Periodontitis. Front Immunol 2021; 12:711337. [PMID: 34566966 PMCID: PMC8455889 DOI: 10.3389/fimmu.2021.711337] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 08/17/2021] [Indexed: 01/01/2023] Open
Abstract
Periodontitis is a highly prevalent chronic inflammatory disease leading to periodontal tissue breakdown and subsequent tooth loss, in which excessive host immune response accounts for most of the tissue damage and disease progression. Despite of the imperative need to develop host modulation therapy, the inflammatory responses and cell population dynamics which are finely tuned by the pathological microenvironment in periodontitis remained unclear. To investigate the local microenvironment of the inflammatory response in periodontitis, 10 periodontitis patients and 10 healthy volunteers were involved in this study. Single-cell transcriptomic profilings of gingival tissues from two patients and two healthy donors were performed. Histology, immunohistochemistry, and flow cytometry analysis were performed to further validate the identified cell subtypes and their involvement in periodontitis. Based on our single-cell resolution analysis, we identified HLA-DR-expressing endothelial cells and CXCL13+ fibroblasts which are highly associated with immune regulation. We also revealed the involvement of the proinflammatory NLRP3+ macrophages in periodontitis. We further showed the increased cell-cell communication between macrophage and T/B cells in the inflammatory periodontal tissues. Our data generated an intriguing catalog of cell types and interaction networks in the human gingiva and identified new inflammation-promoting cell subtypes involved in chronic periodontitis, which will be helpful in advancing host modulation therapy.
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Affiliation(s)
- Shu-Jiao Qian
- Department of Oral and Maxillo-facial Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiao Tong University, Shanghai, China
| | - Qian-Ru Huang
- Department of Immunology and Microbiology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Rui-Ying Chen
- Department of Oral and Maxillo-facial Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiao Tong University, Shanghai, China
| | - Jia-Ji Mo
- Department of Oral and Maxillo-facial Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiao Tong University, Shanghai, China
| | - Lin-Yi Zhou
- Department of Oral and Maxillo-facial Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiao Tong University, Shanghai, China
| | - Yi Zhao
- Department of Immunology and Microbiology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Bin Li
- Department of Immunology and Microbiology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Hong-Chang Lai
- Department of Oral and Maxillo-facial Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiao Tong University, Shanghai, China
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18
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Li N, Wang W, Sun Y, Wang H, Wang T. Seven-year follow-up of a patient with hereditary gingival fibromatosis treated with a multidisciplinary approach: case report. BMC Oral Health 2021; 21:473. [PMID: 34565352 PMCID: PMC8474844 DOI: 10.1186/s12903-021-01830-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 09/15/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Hereditary gingival fibromatosis (HGF) is rare in clinical practice, and the long-term results of the combined orthodontic-periodontal treatment of HGF are rarely reported. CASE PRESENTATION This study reports for the first time the results of seven years of follow-up in a seven-year-old girl with HGF. The diagnosis was confirmed by clinical signs, family history and histopathological examination. First, periodontal scaling and oral hygiene reinforcement were performed regularly in the mixed dentition stage. Next, gingivoplasty was performed on the permanent dentition. Two months after the surgery, treatment with fixed orthodontic appliances was conducted. The teeth were polished on a monthly basis, and oral hygiene was reinforced to control gingival enlargement. Gingival hypertrophy recurred slightly, and gingivectomies were performed in the months following the start of orthodontic treatment. Follow-up was performed for 24 months with orthodontic retention, and gingival enlargement remained stable after the combined treatment. CONCLUSIONS The risk of gingival hyperplasia recurrence during and after orthodontic treatment is high, but satisfying long-term outcomes can be achieved with gingivectomy, malocclusion correction, and regular follow-up maintenance.
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Affiliation(s)
- Ning Li
- Department of Orthodontics, Yantai Stomatological Hospital, Yantai, 264000, Shandong, China
| | - Wenfang Wang
- Department of Stomatology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710000, Shanxi, China
| | - Yuanyuan Sun
- Department of Periodontology, Yantai Stomatological Hospital, Yantai, 264000, Shandong, China
| | - Hongning Wang
- Department of Orthodontics, Yantai Stomatological Hospital, Yantai, 264000, Shandong, China
| | - Tiejun Wang
- Department of Orthodontics, Yantai Stomatological Hospital, Yantai, 264000, Shandong, China.
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19
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Cogulu O, Mojarrab N, Simsir OS, Durmaz A, Aykut A, Cogulu D. Association of mutation in PTPN14 gene and gingival fibromatosis with distinctive facies: a novel finding in whole exome sequencing. Clin Dysmorphol 2021; 30:93-99. [PMID: 33491997 DOI: 10.1097/mcd.0000000000000363] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Gingival fibromatosis with distinctive facies presents a rare clinical picture. It is characterized by gingival fibromatosis in conjunction with some craniofacial dysmorphic features such as relative macrocephaly, bushy eyebrows, synophrys, hypertelorism, downslanting palpebral fissures, flattened nasal bridge, hypoplastic nares, cupid-bow mouth and a high palate. Autosomal recessive inheritance has been suggested. However, to date, no causative gene has been reported. Herein, we report a case presenting with the typical findings of this rare genetic syndrome. A homozygous c.1855C>T (p.Gln619Ter) mutation in the PTPN14 gene was identified.
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Affiliation(s)
| | | | | | - Asude Durmaz
- Medical Genetics, Ege University, Medical Faculty Hospital, Izmir, Turkey
| | - Ayca Aykut
- Medical Genetics, Ege University, Medical Faculty Hospital, Izmir, Turkey
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20
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Chen JT, Lin CH, Huang HW, Wang YP, Kao PC, Yang TP, Wang SK. Novel REST Truncation Mutations Causing Hereditary Gingival Fibromatosis. J Dent Res 2021; 100:868-874. [PMID: 33719663 DOI: 10.1177/0022034521996620] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Hereditary gingival fibromatosis (HGF) is a rare genetic disorder featured by nonsyndromic pathological overgrowth of gingiva. The excessive gingival tissues can cause dental, masticatory, and phonetic problems, which impose severe functional and esthetic burdens on affected individuals. Due to its high recurrent rate, patients with HGF have to undergo repeated surgical procedures of gingival resection, from childhood to adulthood, which significantly compromises their quality of life. Unraveling the genetic etiology and molecular pathogenesis of HGF not only gains insight into gingival physiology and homeostasis but also opens avenues for developing potential therapeutic strategies for this disorder. Recently, mutations in REST (OMIM *600571), encoding a transcription repressor, were reported to cause HGF (GINGF5; OMIM #617626) in 3 Turkish families. However, the functions of REST in gingival homeostasis and pathogenesis of REST-associated HGF remain largely unknown. In this study, we characterized 2 HGF families and identified 2 novel REST mutations, c.2449C>T (p.Arg817*) and c.2771_2793dup (p.Glu932Lysfs*3). All 5 mutations reported to date are nonsenses or frameshifts in the last exon of REST and would presumably truncate the protein. In vitro reporter gene assays demonstrated a partial or complete loss of repressor activity for these truncated RESTs. When coexpressed with the full-length protein, the truncated RESTs impaired the repressive ability of wild-type REST, suggesting a dominant negative effect. Immunofluorescent studies showed nuclear localization of overexpressed wild-type and truncated RESTs in vitro, indicating preservation of the nuclear localization signal in shortened proteins. Immunohistochemistry demonstrated a comparable pattern of ubiquitous REST expression in both epithelium and lamina propria of normal and HGF gingival tissues despite a reduced reactivity in HGF gingiva. Results of this study confirm the pathogenicity of REST truncation mutations occurring in the last exon causing HGF and suggest the pathosis is caused by an antimorphic (dominant negative) disease mechanism.
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Affiliation(s)
- J T Chen
- Graduate Institute of Clinical Dentistry, National Taiwan University School of Dentistry, Taipei City, Taiwan.,Department of Dentistry, National Taiwan University Hospital, Taipei City, Taiwan
| | - C H Lin
- Department of Dentistry, National Taiwan University School of Dentistry, Taipei City, Taiwan
| | - H W Huang
- Genomics Research Center, Academia Sinica, Taipei City, Taiwan
| | - Y P Wang
- Department of Dentistry, National Taiwan University Hospital, Taipei City, Taiwan.,Department of Dentistry, National Taiwan University School of Dentistry, Taipei City, Taiwan
| | - P C Kao
- Department of Dentistry, National Taiwan University School of Dentistry, Taipei City, Taiwan
| | - T P Yang
- Dr. Lawrence Dental Clinic, Kaohsiung City, Taiwan
| | - S K Wang
- Department of Dentistry, National Taiwan University School of Dentistry, Taipei City, Taiwan.,Department of Pediatric Dentistry, National Taiwan University Children's Hospital, Taipei City, Taiwan
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21
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Hereditary gingival fibromatosis in children: a systematic review of the literature. Clin Oral Investig 2020; 25:3599-3607. [PMID: 33188467 DOI: 10.1007/s00784-020-03682-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 11/04/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVES Hereditary gingival fibromatosis (HGF) is an uncommon, inherited condition with slow and progressive fibrous hyperplasia of the gingiva. Due to its association with mastication, speech, and occlusion problems, early diagnosis is important. We sought to summarize the available data regarding the epidemiology, clinical characteristics, and outcomes of children with HGF (< 18 years). METHODS A systematic literature review of the MEDLINE and Cochrane Library databases was conducted with respect to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement (end-of-search date: March 1, 2019). RESULTS A total of 99 articles reporting on 146 patients were included. The mean age was 10.82 ± 3.93 years, and generalized gingival enlargement was seen in 97.16% (95% CI 92.69 to 99.14). Jaw, gingival, and teeth abnormalities; poor oral hygiene; eating; or speech difficulties were typical HGF-induced, while 60.90% had extraoral manifestations (95% CI 52.41 to 68.78). The disease was most commonly inherited in an autosomal dominant manner (88.41%, 95% CI 78.5 to 94.26), and about one-third of the patients had syndromic HGF (33.85%, 95% CI 23.50 to 46.00). Gingivectomy was performed in the majority of cases (91.15%, 95% CI 84.31 to 95.29), and recurrence was seen in 33.85% (95% CI 23.50 to 46.00). CONCLUSION HGF should be suspected in children with nodularity and gingival fibrosis, teeth abnormalities, or jaw distortion. Family history can help to establish the diagnosis. CLINICAL RELEVANCE More cases should focus on longer-term follow-up after gingivectomy as disease recurrence is not uncommon.
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22
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Hyder Z, Fairclough A, Groom M, Getty J, Alexander E, van Veen EM, Makin G, Sethuraman C, Tang V, Evans DG, Maher ER, Woodward ER. Constitutional de novo deletion CNV encompassing REST predisposes to diffuse hyperplastic perilobar nephroblastomatosis (HPLN). J Med Genet 2020; 58:581-585. [PMID: 32917767 DOI: 10.1136/jmedgenet-2020-107087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 07/04/2020] [Accepted: 07/06/2020] [Indexed: 11/04/2022]
Abstract
BACKGROUND Nephroblastomatosis is a recognised precursor for the development of Wilms tumour (WT), the most common childhood renal tumour. While the majority of WT is sporadic in origin, germline intragenic mutations of predisposition genes such as WT1, REST and TRIM28 have been described in apparently isolated (non-familial) WT.Despite constitutional CNVs being a well-studied cause of developmental disorders, their role in cancer predisposition is less well defined, so that the interpretation of cancer risks associated with specific CNVs can be complex. OBJECTIVE To highlight the role of a constitutional deletion CNV (delCNV) encompassing the REST tumour suppressor gene in diffuse hyperplastic perilobar nephroblastomatosis (HPLN). METHODS/RESULTS Array comparative genomic hybridisation in an infant presenting with apparently sporadic diffuse HPLN revealed a de novo germline CNV, arr[GRCh37] 4q12(57,385,330-57,947,405)x1. The REST tumour suppressor gene is located at GRCh37 chr4:57,774,042-57,802,010. CONCLUSION This delCNV encompassing REST is associated with nephroblastomatosis. Deletion studies should be included in the molecular work-up of inherited predisposition to WT/nephroblastomatosis. Detection of delCNVs involving known cancer predisposition genes can yield insights into the relationship between underlying genomic architecture and associated tumour risk.
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Affiliation(s)
- Zerin Hyder
- Manchester Centre for Genomic Medicine, Manchester University NHS Foundation Trust, Manchester, Greater Manchester, UK
| | - Adele Fairclough
- Manchester Centre for Genomic Medicine, Manchester University NHS Foundation Trust, Manchester, Greater Manchester, UK.,NW Genomic Laboratory Hub, Manchester University NHS Foundation Trust, Manchester, Greater Manchester, UK
| | - Mike Groom
- NW Genomic Laboratory Hub, Liverpool Women's Hospital, Liverpool, UK
| | - Joan Getty
- NW Genomic Laboratory Hub, Liverpool Women's Hospital, Liverpool, UK
| | - Elizabeth Alexander
- Manchester Centre for Genomic Medicine, Manchester University NHS Foundation Trust, Manchester, Greater Manchester, UK
| | - Elke M van Veen
- Manchester Centre for Genomic Medicine, Manchester University NHS Foundation Trust, Manchester, Greater Manchester, UK
| | - Guy Makin
- Department of Paediatric Oncology, Royal Manchester Children's Hospital, Manchester, UK.,Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK
| | - Chitra Sethuraman
- Department of Paediatric Histopathology, Manchester University NHS Foundation Trust, Manchester, Greater Manchester, UK
| | - Vivian Tang
- Department of Radiology, Royal Manchester Children's Hospital, Manchester University NHS Foundation Trust, Manchester, Greater Manchester, UK
| | - D Gareth Evans
- Manchester Centre for Genomic Medicine, Manchester University NHS Foundation Trust, Manchester, Greater Manchester, UK
| | - Eamonn R Maher
- Department of Medical Genetics, University of Cambridge, Cambridge, Cambridgeshire, UK.,Department of Clinical Genetics, Cambridge University Hospitals NHS Foundation Trust, Cambridge, Cambridgeshire, UK
| | - Emma R Woodward
- Manchester Centre for Genomic Medicine, Manchester University NHS Foundation Trust, Manchester, Greater Manchester, UK
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23
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Zhao M, Havrilla JM, Fang L, Chen Y, Peng J, Liu C, Wu C, Sarmady M, Botas P, Isla J, Lyon GJ, Weng C, Wang K. Phen2Gene: rapid phenotype-driven gene prioritization for rare diseases. NAR Genom Bioinform 2020; 2:lqaa032. [PMID: 32500119 PMCID: PMC7252576 DOI: 10.1093/nargab/lqaa032] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 04/10/2020] [Accepted: 04/28/2020] [Indexed: 02/07/2023] Open
Abstract
Human Phenotype Ontology (HPO) terms are increasingly used in diagnostic settings to aid in the characterization of patient phenotypes. The HPO annotation database is updated frequently and can provide detailed phenotype knowledge on various human diseases, and many HPO terms are now mapped to candidate causal genes with binary relationships. To further improve the genetic diagnosis of rare diseases, we incorporated these HPO annotations, gene-disease databases and gene-gene databases in a probabilistic model to build a novel HPO-driven gene prioritization tool, Phen2Gene. Phen2Gene accesses a database built upon this information called the HPO2Gene Knowledgebase (H2GKB), which provides weighted and ranked gene lists for every HPO term. Phen2Gene is then able to access the H2GKB for patient-specific lists of HPO terms or PhenoPacket descriptions supported by GA4GH (http://phenopackets.org/), calculate a prioritized gene list based on a probabilistic model and output gene-disease relationships with great accuracy. Phen2Gene outperforms existing gene prioritization tools in speed and acts as a real-time phenotype-driven gene prioritization tool to aid the clinical diagnosis of rare undiagnosed diseases. In addition to a command line tool released under the MIT license (https://github.com/WGLab/Phen2Gene), we also developed a web server and web service (https://phen2gene.wglab.org/) for running the tool via web interface or RESTful API queries. Finally, we have curated a large amount of benchmarking data for phenotype-to-gene tools involving 197 patients across 76 scientific articles and 85 patients' de-identified HPO term data from the Children's Hospital of Philadelphia.
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Affiliation(s)
- Mengge Zhao
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - James M Havrilla
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Li Fang
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Ying Chen
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Jacqueline Peng
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA.,Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Cong Liu
- Department of Biomedical Informatics, Columbia University Medical Center, New York, NY 10032, USA
| | - Chao Wu
- Division of Genomic Diagnostics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Mahdi Sarmady
- Division of Genomic Diagnostics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA.,Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Pablo Botas
- Foundation 29, Pozuelo de Alarcon, 28223 Madrid, Spain
| | - Julián Isla
- Foundation 29, Pozuelo de Alarcon, 28223 Madrid, Spain.,Dravet Syndrome European Federation, 29200 Brest, France
| | - Gholson J Lyon
- Institute for Basic Research in Developmental Disabilities (IBR), Staten Island, NY 10314, USA
| | - Chunhua Weng
- Department of Biomedical Informatics, Columbia University Medical Center, New York, NY 10032, USA
| | - Kai Wang
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA.,Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
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24
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Resende EP, Xavier MT, Matos S, Antunes AC, Silva HC. Nonsyndromic hereditary gingival fibromatosis: Characterization of a family and review of genetic etiology. SPECIAL CARE IN DENTISTRY 2020; 40:320-328. [PMID: 32413193 DOI: 10.1111/scd.12458] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 03/01/2020] [Accepted: 03/18/2020] [Indexed: 11/29/2022]
Abstract
Our aim is to describe a family with a nonsyndromic form of hereditary gingival fibromatosis (HGF) and discuss genetic characteristics of this rare disease by reviewing reported cases. A mother and three descendants were diagnosed with HGF. There was marked variable expressivity: from severe generalized gingival overgrowth in a 16-year-old boy (the proband) to minimal manifestations in the mother. The proband was submitted to gingivectomy and gingivoplasty. In younger siblings, the disease remained stable for 5 years, suggesting that clinical surveillance is a good option. The diagnosis was supported by histopathological examination. Analysis of this family and literature-reported cases supports that HGF most frequently shows an autosomal dominant inheritance with high penetrance and variable expressivity. Neomutations and gonadal mosaicism do not seem to be a rare event. Although five loci have been mapped by linkage analysis, only two genes, SOS1 and REST, were identified in four families.
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Affiliation(s)
- Elisabete Peres Resende
- Faculty of Medicine, Dentistry Department, University of Coimbra, Coimbra, Portugal.,Faculty of Medicine, Institute of Medical Genetics, University of Coimbra, Coimbra, Portugal
| | - Maria Teresa Xavier
- Faculty of Medicine, Dentistry Department, University of Coimbra, Coimbra, Portugal.,Faculty of Medicine, Institute of Pediatric and Preventive Dentistry, University of Coimbra, Coimbra, Portugal
| | - Sérgio Matos
- Faculty of Medicine, Dentistry Department, University of Coimbra, Coimbra, Portugal.,Faculty of Medicine, Institute of Periodontology, University of Coimbra, Coimbra, Portugal.,Faculty of Medicine, Center for Innovation and Research in Oral Sciences (CIROS), University of Coimbra, Coimbra, Portugal
| | - Ana C Antunes
- Faculty of Medicine, Dentistry Department, University of Coimbra, Coimbra, Portugal
| | - Henriqueta Coimbra Silva
- Faculty of Medicine, Institute of Medical Genetics, University of Coimbra, Coimbra, Portugal.,Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, Coimbra, Portugal
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25
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Gao H, Liang J, Xia X, Deng Z, Zhang Z. Unusual clinical and histologic findings in a child with mixed dentition with hereditary gingival fibromatosis: a case report. Transl Pediatr 2020; 9:74-80. [PMID: 32154139 PMCID: PMC7036643 DOI: 10.21037/tp.2019.12.01] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Hereditary gingival fibromatosis (HGF) is characterized by an accumulation of extracellular matrix resulting in a fibrotic enlargement of keratinized gingiva. The goal of this article is to describe one kindred affected with HGF and discuss the diagnosis, treatment, recurrence risk and histopathology features of the proband with mixed dentition. An 8-year-old boy reported with a chief complaint of gingival enlargement. A series of examinations were performed to make a diagnosis and family histories of the patient were recorded. Surgical therapy included gingivectomy and gingivoplasty technique were performed for the proband to remove excess gingiva. Collagen bundles in the permanent incisors area were prevalently significantly bulkier than that of the deciduous teeth area and the arrangement was much more regular. Microscopic evaluation revealed that epithelial hyperplasia was severe in tissue with intense inflammation, whereas tissue with mild inflammation showed only long and deep epithelial papillae. The patient was placed on a 3-month recall schedule and didn't demonstrate any recurrence of gingival overgrowth over a 1-year follow-up period. The study revealed that the eruption of permanent teeth played an important role in accelerating gingival hyperplasia. For the first time, it was confirmed from histological perspective that inflammation in gingival tissue was crucial to the gingival overgrowth of HGF.
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Affiliation(s)
- Han Gao
- Department of Oral and Maxillofacial Surgery, Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, China.,Zhuhai Stomatological Hospital, Zhuhai 519000, China
| | - Jun Liang
- Department of Oral and Maxillofacial Surgery, Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, China
| | - Xiaoxue Xia
- Department of Oral and Maxillofacial Surgery, Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, China
| | - Zhaoming Deng
- Department of Oral and Maxillofacial Surgery, Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, China
| | - Zhaoqiang Zhang
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
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26
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He XF, Xu CJ, Tian D, Wang MM, Zhang WR, Guo YT. [Hereditary gingival fibromatosis: a three-generation case report]. HUA XI KOU QIANG YI XUE ZA ZHI = HUAXI KOUQIANG YIXUE ZAZHI = WEST CHINA JOURNAL OF STOMATOLOGY 2020; 38:104-107. [PMID: 32037776 PMCID: PMC7184293 DOI: 10.7518/hxkq.2020.01.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 04/19/2019] [Indexed: 06/10/2023]
Abstract
Hereditary gingival fibromatosis (HGF) is a familial hereditary disease; while it is rare and usually benign, it is also characterized by the slow and progressive development of gingival tissue. This paper reports on the clinical examina-tion and history of HGF in a family of patients.
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Affiliation(s)
- Xiu-Fang He
- Center of Stomatology, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Chun-Jiao Xu
- Center of Stomatology, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Di Tian
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha 410008, China
| | - Miao-Miao Wang
- Center of Stomatology, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Wen-Rui Zhang
- Center of Stomatology, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Yi-Ting Guo
- Center of Stomatology, Xiangya Hospital, Central South University, Changsha 410008, China
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27
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Lin M, Liu Z, Liu G, Zhao S, Li C, Chen W, Coban Akdemir Z, Lin J, Song X, Wang S, Xu Q, Zhao Y, Wang L, Zhang Y, Yan Z, Liu S, Liu J, Chen Y, Zuo Y, Yang X, Sun T, Yang X, Niu Y, Li X, You W, Qiu B, Ding C, Liu P, Zhang S, Carvalho CMB, Posey JE, Qiu G, Lupski JR, Wu Z, Zhang J, Wu N. Genetic and molecular mechanism for distinct clinical phenotypes conveyed by allelic truncating mutations implicated in FBN1. Mol Genet Genomic Med 2020; 8:e1023. [PMID: 31774634 PMCID: PMC6978264 DOI: 10.1002/mgg3.1023] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 09/21/2019] [Accepted: 10/11/2019] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND The molecular and genetic mechanisms by which different single nucleotide variant alleles in specific genes, or at the same genetic locus, cause distinct disease phenotypes often remain unclear. Allelic truncating mutations of FBN1 could cause either classical Marfan syndrome (MFS) or a more complicated phenotype associated with Marfanoid-progeroid-lipodystrophy syndrome (MPLS). METHODS We investigated a small cohort, encompassing two classical MFS and one MPLS subjects from China, whose clinical presentation included scoliosis potentially requiring surgical intervention. Targeted next generation sequencing was performed on all the participants. We analyzed the molecular diagnosis, clinical features, and the potential molecular mechanism involved in the MPLS subject in our cohort. RESULTS We report a novel de novo FBN1 mutation for the first Chinese subject with MPLS, a more complicated fibrillinopathy, and two subjects with more classical MFS. We further predict that the MPLS truncating mutation, and others previously reported, is prone to escape the nonsense-mediated decay (NMD), while MFS mutations are predicted to be subjected to NMD. Also, the MPLS mutation occurs within the glucogenic hormone asprosin domain of FBN1. In vitro experiments showed that the single MPLS mutation p.Glu2759Cysfs*9 appears to perturb proper FBN1 protein aggregation as compared with the classical MFS mutation p.Tyr2596Thrfs*86. Both mutations appear to upregulate SMAD2 phosphorylation in vitro. CONCLUSION We provide direct evidence that a dominant-negative interaction of FBN1 potentially explains the complex MPLS phenotypes through genetic and functional analysis. Our study expands the mutation spectrum of FBN1 and highlights the potential molecular mechanism for MPLS.
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28
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Karaca E, Posey JE, Bostwick B, Liu P, Gezdirici A, Yesil G, Coban Akdemir Z, Bayram Y, Harms FL, Meinecke P, Alawi M, Bacino CA, Sutton VR, Kortüm F, Lupski JR. Biallelic and De Novo Variants in DONSON Reveal a Clinical Spectrum of Cell Cycle-opathies with Microcephaly, Dwarfism and Skeletal Abnormalities. Am J Med Genet A 2019; 179:2056-2066. [PMID: 31407851 DOI: 10.1002/ajmg.a.61315] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 07/10/2019] [Accepted: 07/14/2019] [Indexed: 01/30/2023]
Abstract
Co-occurrence of primordial dwarfism and microcephaly together with particular skeletal findings are seen in a wide range of Mendelian syndromes including microcephaly micromelia syndrome (MMS, OMIM 251230), microcephaly, short stature, and limb abnormalities (MISSLA, OMIM 617604), and microcephalic primordial dwarfisms (MPDs). Genes associated with these syndromes encode proteins that have crucial roles in DNA replication or in other critical steps of the cell cycle that link DNA replication to cell division. We identified four unrelated families with five affected individuals having biallelic or de novo variants in DONSON presenting with a core phenotype of severe short stature (z score < -3 SD), additional skeletal abnormalities, and microcephaly. Two apparently unrelated families with identical homozygous c.631C > T p.(Arg211Cys) variant had clinical features typical of Meier-Gorlin syndrome (MGS), while two siblings with compound heterozygous c.346delG p.(Asp116Ile*62) and c.1349A > G p.(Lys450Arg) variants presented with Seckel-like phenotype. We also identified a de novo c.683G > T p.(Trp228Leu) variant in DONSON in a patient with prominent micrognathia, short stature and hypoplastic femur and tibia, clinically diagnosed with Femoral-Facial syndrome (FFS, OMIM 134780). Biallelic variants in DONSON have been recently described in individuals with microcephalic dwarfism. These studies also demonstrated that DONSON has an essential conserved role in the cell cycle. Here we describe novel biallelic and de novo variants that are associated with MGS, Seckel-like phenotype and FFS, the last of which has not been associated with any disease gene to date.
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Affiliation(s)
- Ender Karaca
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | - Jennifer E Posey
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | - Bret Bostwick
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas.,Texas Children's Hospital, Baylor College of Medicine, Houston, Texas
| | - Pengfei Liu
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | - Alper Gezdirici
- Department of Medical Genetics, Kanuni Sultan Suleyman Training and Research Hospital, Istanbul, Turkey
| | - Gozde Yesil
- Department of Medical Genetics, Bezmialem University, Istanbul, Turkey
| | - Zeynep Coban Akdemir
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | - Yavuz Bayram
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | - Frederike L Harms
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Peter Meinecke
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Malik Alawi
- Bioinformatics Service Facility, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Center for Bioinformatics, University of Hamburg, Hamburg, Germany.,Heinrich Pette Institute, Leibniz Institute for Experimental Virology, Virus Genomics, Hamburg, Germany
| | - Carlos A Bacino
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas.,Texas Children's Hospital, Baylor College of Medicine, Houston, Texas
| | - V Reid Sutton
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas.,Texas Children's Hospital, Baylor College of Medicine, Houston, Texas
| | - Fanny Kortüm
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - James R Lupski
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas.,Texas Children's Hospital, Baylor College of Medicine, Houston, Texas.,Human Genome Sequencing Center, Baylor College of Medicine, Houston, Texas.,Department of Pediatrics, Baylor College of Medicine, 1 Baylor Plaza, Houston, Texas
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29
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Gao Q, Yang K, Chen D, Song Y, Qiao W, Sun X, Meng L, Bian Z. Antifibrotic Potential of MiR-335-3p in Hereditary Gingival Fibromatosis. J Dent Res 2019; 98:1140-1149. [DOI: 10.1177/0022034519863300] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Hereditary gingival fibromatosis (HGF) is a highly genetically heterogeneous disease, and current therapeutic method is limited to surgical resection with a high recurrence rate. MicroRNAs (miRNAs) are able to fine-tune large-scale target genes. Here we established a simple but effective computational strategy based on available miRNA target prediction algorithms to pinpoint the most potent miRNA that could negatively regulate a group of functional genes. Based on this rationale, miR-335-3p was top ranked by putatively targeting 85 verified profibrotic genes and 79 upregulated genes in HGF patients. Experimentally, downregulation of miR-355-3p was demonstrated in HGF-derived gingival fibroblasts as well as in transforming growth factor β–stimulated normal human gingival fibroblasts (NHGFs) compared to normal control. Ectopic miR-335-3p attenuated, whereas knockdown of miR-335-3p promoted, the fibrogenic activity of human gingival fibroblasts. Mechanically, miR-335-3p directly targeted SOS1, SMAD2/3, and CTNNB1 by canonical and noncanonical base paring. In particular, different portfolios of fibrotic markers were suppressed by silencing SOS1, SMAD2/3, or CTNNB1, respectively. Thus, our study first proposes a novel miRNA screening approach targeting a functionally related gene set and identifies miR-335-3p as a novel target for HGF treatment. Mechanically, miR-335-3p suppresses the fibrogenic activity of human gingival fibroblasts by repressing multiple core molecules in profibrotic networks. Our strategy provides a new paradigm in the treatment for HGF as well as other diseases.
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Affiliation(s)
- Q. Gao
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - K. Yang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - D. Chen
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - Y. Song
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - W. Qiao
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - X. Sun
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - L. Meng
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - Z. Bian
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
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Han SK, Kong J, Kim S, Lee JH, Han DH. Exomic and transcriptomic alterations of hereditary gingival fibromatosis. Oral Dis 2019; 25:1374-1383. [PMID: 30907493 DOI: 10.1111/odi.13093] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 02/18/2019] [Accepted: 02/25/2019] [Indexed: 02/06/2023]
Abstract
OBJECTIVE Hereditary gingival fibromatosis (HGF) is a rare oral disease characterized by either localized or generalized gradual, benign, non-hemorrhagic enlargement of gingivae. Although several genetic causes of HGF are known, the genetic etiology of HGF as a non-syndromic and idiopathic entity remains uncertain. SUBJECTS AND METHODS We performed exome and RNA-seq of idiopathic HGF patients and controls, and then devised a computational framework that specifies exomic/transcriptomic alterations interconnected by a regulatory network to unravel genetic etiology of HGF. Moreover, given the lack of animal model or large-scale cohort data of HGF, we developed a strategy to cross-check their clinical relevance through in silico gene-phenotype mapping with biomedical literature mining and semantic analysis of disease phenotype similarities. RESULTS Exomic variants and differentially expressed genes of HGF were connected by members of TGF-β/SMAD signaling pathway and craniofacial development processes, accounting for the molecular mechanism of fibroblast overgrowth mimicking HGF. Our cross-check supports that genes derived from the regulatory network analysis have pathogenic roles in fibromatosis-related diseases. CONCLUSIONS The computational approach of connecting exomic and transcriptomic alterations through regulatory networks is applicable in the clinical interpretation of genetic variants in HGF patients.
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Affiliation(s)
- Seong Kyu Han
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Korea
| | - Jungho Kong
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Korea
| | - Sanguk Kim
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Korea.,Department of Prosthodontics, College of Dentistry, Yonsei University, Seoul, Korea
| | - Jae-Hoon Lee
- Department of Prosthodontics, College of Dentistry, Yonsei University, Seoul, Korea
| | - Dong-Hoo Han
- Department of Prosthodontics, College of Dentistry, Yonsei University, Seoul, Korea
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31
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Posey JE, O'Donnell-Luria AH, Chong JX, Harel T, Jhangiani SN, Coban Akdemir ZH, Buyske S, Pehlivan D, Carvalho CMB, Baxter S, Sobreira N, Liu P, Wu N, Rosenfeld JA, Kumar S, Avramopoulos D, White JJ, Doheny KF, Witmer PD, Boehm C, Sutton VR, Muzny DM, Boerwinkle E, Günel M, Nickerson DA, Mane S, MacArthur DG, Gibbs RA, Hamosh A, Lifton RP, Matise TC, Rehm HL, Gerstein M, Bamshad MJ, Valle D, Lupski JR. Insights into genetics, human biology and disease gleaned from family based genomic studies. Genet Med 2019; 21:798-812. [PMID: 30655598 PMCID: PMC6691975 DOI: 10.1038/s41436-018-0408-7] [Citation(s) in RCA: 115] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 12/05/2018] [Indexed: 12/16/2022] Open
Abstract
Identifying genes and variants contributing to rare disease phenotypes and Mendelian conditions informs biology and medicine, yet potential phenotypic consequences for variation of >75% of the ~20,000 annotated genes in the human genome are lacking. Technical advances to assess rare variation genome-wide, particularly exome sequencing (ES), enabled establishment in the United States of the National Institutes of Health (NIH)-supported Centers for Mendelian Genomics (CMGs) and have facilitated collaborative studies resulting in novel "disease gene" discoveries. Pedigree-based genomic studies and rare variant analyses in families with suspected Mendelian conditions have led to the elucidation of hundreds of novel disease genes and highlighted the impact of de novo mutational events, somatic variation underlying nononcologic traits, incompletely penetrant alleles, phenotypes with high locus heterogeneity, and multilocus pathogenic variation. Herein, we highlight CMG collaborative discoveries that have contributed to understanding both rare and common diseases and discuss opportunities for future discovery in single-locus Mendelian disorder genomics. Phenotypic annotation of all human genes; development of bioinformatic tools and analytic methods; exploration of non-Mendelian modes of inheritance including reduced penetrance, multilocus variation, and oligogenic inheritance; construction of allelic series at a locus; enhanced data sharing worldwide; and integration with clinical genomics are explored. Realizing the full contribution of rare disease research to functional annotation of the human genome, and further illuminating human biology and health, will lay the foundation for the Precision Medicine Initiative.
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Affiliation(s)
- Jennifer E Posey
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.
| | - Anne H O'Donnell-Luria
- Analytic and Translational Genetics Unit, Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, USA
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Boston Children's Hospital, Boston, MA, USA
| | - Jessica X Chong
- Department of Pediatrics, University of Washington, Seattle, WA, USA
| | - Tamar Harel
- Department of Genetic and Metabolic Diseases, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Shalini N Jhangiani
- The Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | - Zeynep H Coban Akdemir
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Steven Buyske
- Department of Genetics, Rutgers University, Piscataway, NJ, USA
- Department of Statistics, Rutgers University, Piscataway, NJ, USA
| | - Davut Pehlivan
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Claudia M B Carvalho
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Samantha Baxter
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Nara Sobreira
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Pengfei Liu
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
- Baylor Genetics Laboratory, Houston, TX, USA
| | - Nan Wu
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Jill A Rosenfeld
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Sushant Kumar
- Computational Biology and Bioinformatics Program, Yale University Medical School, New Haven, CT, USA
| | - Dimitri Avramopoulos
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Janson J White
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
- Department of Pediatrics, University of Washington, Seattle, WA, USA
| | - Kimberly F Doheny
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University, Baltimore, MD, USA
- Center for Inherited Disease Research, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - P Dane Witmer
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University, Baltimore, MD, USA
- Center for Inherited Disease Research, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Corinne Boehm
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - V Reid Sutton
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Donna M Muzny
- The Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | - Eric Boerwinkle
- The Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
- Human Genetics Center, University of Texas Health Science Center, Houston, TX, USA
| | - Murat Günel
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT, USA
- Department of Genetics, Yale School of Medicine, New Haven, CT, USA
| | | | - Shrikant Mane
- Yale Center for Genome Analysis, Yale School of Medicine, Yale University, New Haven, CT, USA
| | - Daniel G MacArthur
- Analytic and Translational Genetics Unit, Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, USA
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Richard A Gibbs
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
- The Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | - Ada Hamosh
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Richard P Lifton
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT, USA
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT, USA
- Laboratory of Human Genetics and Genomics, The Rockefeller University, New York, NY, USA
| | - Tara C Matise
- Department of Genetics, Rutgers University, Piscataway, NJ, USA
| | - Heidi L Rehm
- Analytic and Translational Genetics Unit, Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, USA
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Mark Gerstein
- Computational Biology and Bioinformatics Program, Yale University Medical School, New Haven, CT, USA
| | - Michael J Bamshad
- Department of Pediatrics, University of Washington, Seattle, WA, USA
- Department of Genome Sciences, University of Washington, Seattle, WA, USA
| | - David Valle
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - James R Lupski
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.
- The Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA.
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA.
- Texas Children's Hospital, Baylor College of Medicine, Houston, TX, USA.
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32
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Du R, Dinckan N, Song X, Coban-Akdemir Z, Jhangiani SN, Guven Y, Aktoren O, Kayserili H, Petty LE, Muzny DM, Below JE, Boerwinkle E, Wu N, Gibbs RA, Posey JE, Lupski JR, Letra A, Uyguner ZO. Identification of likely pathogenic and known variants in TSPEAR, LAMB3, BCOR, and WNT10A in four Turkish families with tooth agenesis. Hum Genet 2018; 137:689-703. [PMID: 30046887 PMCID: PMC6165673 DOI: 10.1007/s00439-018-1907-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 07/10/2018] [Indexed: 10/28/2022]
Abstract
Tooth agenesis (TA), the failure of development of one or more permanent teeth, is a common craniofacial abnormality observed in different world populations. The genetic etiology of TA is heterogeneous; more than a dozen genes have been associated with isolated or nonsyndromic TA, and more than 80 genes with syndromic forms. In this study, we applied whole exome sequencing (WES) to identify candidate genes contributing to TA in four Turkish families. Likely pathogenic variants with a low allele frequency in the general population were identified in four disease-associated genes, including two distinct variants in TSPEAR, associated with syndromic and isolated TA in one family each; a variant in LAMB3 associated with syndromic TA in one family; and a variant in BCOR plus a disease-associated WNT10A variant in one family with syndromic TA. With the notable exception of WNT10A (Tooth agenesis, selective, 4, MIM #150400), the genotype-phenotype relationships described in the present cohort represent an expansion of the clinical spectrum associated with these genes: TSPEAR (Deafness, autosomal recessive 98, MIM #614861), LAMB3 (Amelogenesis imperfecta, type IA, MIM #104530; Epidermolysis bullosa, junctional, MIMs #226700 and #226650), and BCOR (Microphthalmia, syndromic 2, MIM #300166). We provide evidence supporting the candidacy of these genes with TA, and propose TSPEAR as a novel nonsyndromic TA gene. Our data also suggest potential multilocus genomic variation, or mutational burden, in a single family, involving the BCOR and WNT10A loci, underscoring the complexity of the genotype-phenotype relationship in the common complex trait of TA.
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Affiliation(s)
- Renqian Du
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Nuriye Dinckan
- Department of Medical Genetics, Istanbul Medical Faculty, Istanbul University, Millet Cad., Capa, Fatih, 34093, Istanbul, Turkey
- Center for Craniofacial Research, University of Texas Health Science Center at Houston School of Dentistry, Houston, TX, USA
| | - Xiaofei Song
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Zeynep Coban-Akdemir
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Shalini N Jhangiani
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | - Yeliz Guven
- Department of Pedodontics, Faculty of Dentistry, Istanbul University, Capa, Istanbul, Turkey
| | - Oya Aktoren
- Department of Pedodontics, Faculty of Dentistry, Istanbul University, Capa, Istanbul, Turkey
| | - Hulya Kayserili
- Department of Medical Genetics, Koc University, School of Medicine (KUSOM), Istanbul, Turkey
| | - Lauren E Petty
- Human Genetics Center, University of Texas Health Science Center at Houston School of Public Health, Houston, TX, USA
| | - Donna M Muzny
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | - Jennifer E Below
- Human Genetics Center, University of Texas Health Science Center at Houston School of Public Health, Houston, TX, USA
| | - Eric Boerwinkle
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
- Human Genetics Center, University of Texas Health Science Center at Houston School of Public Health, Houston, TX, USA
| | - Nan Wu
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Beijing, China
| | - Richard A Gibbs
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | - Jennifer E Posey
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - James R Lupski
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
- Texas Children's Hospital, Houston, TX, USA
| | - Ariadne Letra
- Center for Craniofacial Research, University of Texas Health Science Center at Houston School of Dentistry, Houston, TX, USA.
- Department of Diagnostic and Biomedical Sciences, University of Texas Health Science Center at Houston School of Dentistry, Houston, TX, USA.
- Pediatric Research Center, University of Texas Health Science Center at Houston McGovern Medical School, Houston, TX, USA.
- Department of Diagnostic and Biomedical Sciences, Center for Craniofacial Research, University of Texas Health Science Center at Houston School of Dentistry, 1941 East Road, BBSB Room 4210, Houston, TX, 77054, USA.
| | - Z Oya Uyguner
- Department of Medical Genetics, Istanbul Medical Faculty, Istanbul University, Millet Cad., Capa, Fatih, 34093, Istanbul, Turkey.
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Wang K, Chu M, Ding W, Jiang Q. Putative functional variants of lncRNA identified by RegulomeDB were associated with knee osteoarthritis susceptibility. BMC Musculoskelet Disord 2018; 19:284. [PMID: 30086750 PMCID: PMC6081910 DOI: 10.1186/s12891-018-2197-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Accepted: 07/17/2018] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Knee osteoarthritis (KOA) is the most common form of chronic degenerative joint disease worldwide. Its incidence has increased in recent years. Aberrant expression profile of lncRNAs in damaged bone and cartilage of KOA patients has been reported recently, indicating its potential contributions in KOA development and a promising target for disease diagnosis and treatment. The aim of this study was to identify the association between genetic variation in lncRNA and KOA. METHODS We retrieved relevant articles from the PubMed, Medline and Embase databases up to Jul 2017 investigating the association between lncRNA and the risk of osteoarthritis. There are 15 lncRNAs which show connection with osteoarthritis. We selected potential functional polymorphisms identified by RegulomeDB database in these lncRNAs. A case-control study was conducted which contained 278 KOA patients and 289 OA-free controls. RESULTS Logistic regression analyses revealed that H19 rs2067051 T allele was significantly associated with decreased risk of KOA after adjusted for age, gender and BMI in recessive genetic model (OR = 0.63, P = 0.03) and additive genetic model (OR = 0.79, P = 0.03). MEG3 rs4378559 T allele was significantly associated with increased risk of KOA in additive genetic model (OR = 1.32, P = 0.04). Heterogeneity tests proved that H19 rs2067051, MEG3 rs4378559 and HOTTIP rs202384's risk effects on KOA were more remarkable for female, BMI ≥ 25 and younger age (age < 60), respectively. CONCLUSION The results indicate that potential functional genetic variation in lncRNA plays an important role in the pathogenesis of KOA.
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Affiliation(s)
- Kejie Wang
- Department of Sports Medicine and Adult Reconstructive Surgery, Drum Tower Hospital Clinical College of Nanjing Medical University, Zhongshan Road 321, Nanjing, 210008, Jiangsu, People's Republic of China.,Department of Orthopaedics, Changzhou No.1 People's Hospital, Changzhou, 213003, Jiangsu, People's Republic of China
| | - Minjie Chu
- Department of Epidemiology, School of Public Health, Nantong University, Nantong, 226019, Jiangsu, People's Republic of China
| | - Wenge Ding
- Department of Orthopaedics, Changzhou No.1 People's Hospital, Changzhou, 213003, Jiangsu, People's Republic of China
| | - Qing Jiang
- Department of Sports Medicine and Adult Reconstructive Surgery, Drum Tower Hospital Clinical College of Nanjing Medical University, Zhongshan Road 321, Nanjing, 210008, Jiangsu, People's Republic of China. .,The Center of Diagnosis and Treatment for Joint Disease, Drum Tower Hospital Affiliated to Medical School of Nanjing University, Nanjing, 210008, Jiangsu, People's Republic of China.
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34
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Coban-Akdemir Z, White JJ, Song X, Jhangiani SN, Fatih JM, Gambin T, Bayram Y, Chinn IK, Karaca E, Punetha J, Poli C, Boerwinkle E, Shaw CA, Orange JS, Gibbs RA, Lappalainen T, Lupski JR, Carvalho CM, Carvalho CMB. Identifying Genes Whose Mutant Transcripts Cause Dominant Disease Traits by Potential Gain-of-Function Alleles. Am J Hum Genet 2018; 103:171-187. [PMID: 30032986 DOI: 10.1016/j.ajhg.2018.06.009] [Citation(s) in RCA: 143] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 06/14/2018] [Indexed: 12/14/2022] Open
Abstract
Premature termination codon (PTC)-bearing transcripts are often degraded by nonsense-mediated decay (NMD) resulting in loss-of-function (LoF) alleles. However, not all PTCs result in LoF mutations, i.e., some such transcripts escape NMD and are translated to truncated peptide products that result in disease due to gain-of-function (GoF) effects. Since the location of the PTC is a major factor determining transcript fate, we hypothesized that depletion of protein-truncating variants (PTVs) within the gene region predicted to escape NMD in control databases could provide a rank for genic susceptibility for disease through GoF versus LoF. We developed an NMD escape intolerance score to rank genes based on the depletion of PTVs that would render them able to escape NMD using the Atherosclerosis Risk in Communities Study (ARIC) and the Exome Aggregation Consortium (ExAC) control databases, which was further used to screen the Baylor-Center for Mendelian Genomics disease database. This analysis revealed 1,996 genes significantly depleted for PTVs that are predicted to escape from NMD, i.e., PTVesc; further studies provided evidence that revealed a subset as candidate genes underlying Mendelian phenotypes. Importantly, these genes have characteristically low pLI scores, which can cause them to be overlooked as candidates for dominant diseases. Collectively, we demonstrate that this NMD escape intolerance score is an effective and efficient tool for gene discovery in Mendelian diseases due to production of truncated or altered proteins. More importantly, we provide a complementary analytical tool to aid identification of genes associated with dominant traits through a mechanism distinct from LoF.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Claudia M B Carvalho
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA.
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35
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Nakano Y, Kelly MC, Rehman AU, Boger ET, Morell RJ, Kelley MW, Friedman TB, Bánfi B. Defects in the Alternative Splicing-Dependent Regulation of REST Cause Deafness. Cell 2018; 174:536-548.e21. [PMID: 29961578 DOI: 10.1016/j.cell.2018.06.004] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 03/11/2018] [Accepted: 05/31/2018] [Indexed: 10/28/2022]
Abstract
The DNA-binding protein REST forms complexes with histone deacetylases (HDACs) to repress neuronal genes in non-neuronal cells. In differentiating neurons, REST is downregulated predominantly by transcriptional silencing. Here we report that post-transcriptional inactivation of REST by alternative splicing is required for hearing in humans and mice. We show that, in the mechanosensory hair cells of the mouse ear, regulated alternative splicing of a frameshift-causing exon into the Rest mRNA is essential for the derepression of many neuronal genes. Heterozygous deletion of this alternative exon of mouse Rest causes hair cell degeneration and deafness, and the HDAC inhibitor SAHA (Vorinostat) rescues the hearing of these mice. In humans, inhibition of the frameshifting splicing event by a novel REST variant is associated with dominantly inherited deafness. Our data reveal the necessity for alternative splicing-dependent regulation of REST in hair cells, and they identify a potential treatment for a group of hereditary deafness cases.
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Affiliation(s)
- Yoko Nakano
- Department of Anatomy and Cell Biology, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA; Inflammation Program, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA
| | - Michael C Kelly
- Laboratory of Cochlear Development, National Institute on Deafness and Other Communication Disorders, NIH, Bethesda, MD 20892, USA
| | - Atteeq U Rehman
- Laboratory of Molecular Genetics, National Institute on Deafness and Other Communication Disorders, NIH, Bethesda, MD 20892, USA; Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Erich T Boger
- Genomics and Computational Biology Core, National Institute on Deafness and Other Communication Disorders, NIH, Bethesda, MD 20892, USA
| | - Robert J Morell
- Genomics and Computational Biology Core, National Institute on Deafness and Other Communication Disorders, NIH, Bethesda, MD 20892, USA
| | - Matthew W Kelley
- Laboratory of Cochlear Development, National Institute on Deafness and Other Communication Disorders, NIH, Bethesda, MD 20892, USA
| | - Thomas B Friedman
- Laboratory of Molecular Genetics, National Institute on Deafness and Other Communication Disorders, NIH, Bethesda, MD 20892, USA
| | - Botond Bánfi
- Department of Anatomy and Cell Biology, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA; Inflammation Program, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA; Department of Otolaryngology-Head and Neck Surgery, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA; Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA.
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36
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Heterozygous Truncating Variants in POMP Escape Nonsense-Mediated Decay and Cause a Unique Immune Dysregulatory Syndrome. Am J Hum Genet 2018. [PMID: 29805043 DOI: 10.1016/j.ajhg.2018.04.010)] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
The proteasome processes proteins to facilitate immune recognition and host defense. When inherently defective, it can lead to aberrant immunity resulting in a dysregulated response that can cause autoimmunity and/or autoinflammation. Biallelic or digenic loss-of-function variants in some of the proteasome subunits have been described as causing a primary immunodeficiency disease that manifests as a severe dysregulatory syndrome: chronic atypical neutrophilic dermatosis with lipodystrophy and elevated temperature (CANDLE). Proteasome maturation protein (POMP) is a chaperone for proteasome assembly and is critical for the incorporation of catalytic subunits into the proteasome. Here, we characterize and describe POMP-related autoinflammation and immune dysregulation disease (PRAID) discovered in two unrelated individuals with a unique constellation of early-onset combined immunodeficiency, inflammatory neutrophilic dermatosis, and autoimmunity. We also begin to delineate a complex genetic mechanism whereby de novo heterozygous frameshift variants in the penultimate exon of POMP escape nonsense-mediated mRNA decay (NMD) and result in a truncated protein that perturbs proteasome assembly by a dominant-negative mechanism. To our knowledge, this mechanism has not been reported in any primary immunodeficiencies, autoinflammatory syndromes, or autoimmune diseases. Here, we define a unique hypo- and hyper-immune phenotype and report an immune dysregulation syndrome caused by frameshift mutations that escape NMD.
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37
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Poli MC, Ebstein F, Nicholas SK, de Guzman MM, Forbes LR, Chinn IK, Mace EM, Vogel TP, Carisey AF, Benavides F, Coban-Akdemir ZH, Gibbs RA, Jhangiani SN, Muzny DM, Carvalho CM, Schady DA, Jain M, Rosenfeld JA, Emrick L, Lewis RA, Lee B, Zieba BA, Küry S, Krüger E, Lupski JR, Bostwick BL, Orange JS, Orange JS. Heterozygous Truncating Variants in POMP Escape Nonsense-Mediated Decay and Cause a Unique Immune Dysregulatory Syndrome. Am J Hum Genet 2018; 102:1126-1142. [PMID: 29805043 DOI: 10.1016/j.ajhg.2018.04.010] [Citation(s) in RCA: 105] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 04/13/2018] [Indexed: 12/12/2022] Open
Abstract
The proteasome processes proteins to facilitate immune recognition and host defense. When inherently defective, it can lead to aberrant immunity resulting in a dysregulated response that can cause autoimmunity and/or autoinflammation. Biallelic or digenic loss-of-function variants in some of the proteasome subunits have been described as causing a primary immunodeficiency disease that manifests as a severe dysregulatory syndrome: chronic atypical neutrophilic dermatosis with lipodystrophy and elevated temperature (CANDLE). Proteasome maturation protein (POMP) is a chaperone for proteasome assembly and is critical for the incorporation of catalytic subunits into the proteasome. Here, we characterize and describe POMP-related autoinflammation and immune dysregulation disease (PRAID) discovered in two unrelated individuals with a unique constellation of early-onset combined immunodeficiency, inflammatory neutrophilic dermatosis, and autoimmunity. We also begin to delineate a complex genetic mechanism whereby de novo heterozygous frameshift variants in the penultimate exon of POMP escape nonsense-mediated mRNA decay (NMD) and result in a truncated protein that perturbs proteasome assembly by a dominant-negative mechanism. To our knowledge, this mechanism has not been reported in any primary immunodeficiencies, autoinflammatory syndromes, or autoimmune diseases. Here, we define a unique hypo- and hyper-immune phenotype and report an immune dysregulation syndrome caused by frameshift mutations that escape NMD.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Jordan S Orange
- Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA; Texas Children's Hospital, Division of Pediatric Immunology, Allergy, and Rheumatology, Houston, TX 77030, USA.
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Hazzaa HH, Gouda OM, Kamal NM, Ali SAM, El Shiekh MAM, Tawfik MM. Expression of CD163 in hereditary gingival fibromatosis: A possible association with TGF-β1. J Oral Pathol Med 2018; 47:286-292. [PMID: 29325232 DOI: 10.1111/jop.12679] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/06/2018] [Indexed: 11/30/2022]
Abstract
BACKGROUND Although several studies have discussed some of the molecular and cellular changes associated with hereditary gingival fibromatosis (HGF), its pathogenesis is still largely unclear. This study was directed to detect and outline the degree of relationship between the immunophenotyped macrophages (M2) expressing CD163 and TGF-β1 in patients with gingival overgrowth due to HGF. METHODS Biopsies from 20 patients suffering from HGF and 20 normal control subjects were harvested, histologically and immunohistochemically stained then, analyzed and statistically compared and correlated for CD163 immunoexpression and TGF-β1. RESULTS All HGF specimens expressed TGF-β1 by most of the connective tissue fibroblasts, with statistically high significant mean of area % (2.61 ± 0.41) compared to normal controls (0.11 ± 0.06; P = .001). All control specimens revealed negligible CD163 immunostaining of the few inflammatory cells found with a mean area of % (0.69 ± 0.12), while the specimens of HGF cases showed statistically significant higher CD163 expression (3.39 ± 0.75) at (P = .007). A statistically significant higher mean % of M2 cells expressing CD163 in relation to the total number of the inflammatory cells was revealed in HGF (34.46 ± 2.04) compared to the control group (16.36 ± 2.39; P-value ≤ .05). Moderate correlation between CD163 and TGF-β1 was detected in HGF (r = .451; P-value < .05). CONCLUSIONS CD163 and TGF-β1 were clearly expressed in HGF cases compared to healthy control patients, with significant correlation. In HGF, the increase in CD 163-positive cells was specific and not dependent on the chronic gingival inflammation.
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Affiliation(s)
- Hala H Hazzaa
- Department of Oral Medicine, Diagnosis and Periodontology, Faculty of Dentistry, Al Azhar University (Girls Branch), Cairo, Egypt.,Department of Oral Medicine, Diagnosis and Periodontology, Faculty of Dentistry, Nahda University, Beni-Suef, Egypt
| | - Ossama M Gouda
- Department of Oral Medicine, Diagnosis and Periodontology, Faculty of Dentistry, Nahda University, Beni-Suef, Egypt.,Department of Oral Medicine, Diagnosis and Periodontology, Faculty of Dentistry, Suez Canal University, Ismailea, Egypt.,Nahda University, Beni-Suef, Egypt
| | - Naglaa M Kamal
- Department of Oral Patholology, Faculty of Oral and Dental Medicine, Ahram Canadian University, 6th of October, Egypt
| | - Shereen Abdel Moula Ali
- Department of Oral Medicine and Periodontology, Faculty of Dentistry, Tanta University, Tanta, Egypt
| | - Marwa A M El Shiekh
- Department of Oral Biology, Faculty of Dentistry, Al Azhar University (Girls Branch), Cairo, Egypt
| | - Marwa M Tawfik
- Department of Oral Medicine and Periodontology, Faculty of Dentistry, Beni-Suef University, Beni-Suef, Egypt
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