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Piccolo V, Russo T, Di Pinto D, Pota E, Di Martino M, Piluso G, Ronchi A, Argenziano G, Di Brizzi EV, Santoro C. Poikiloderma With Neutropenia and Mastocytosis: A Case Report and a Review of Dermatological Signs. Front Med (Lausanne) 2021; 8:680363. [PMID: 34179048 PMCID: PMC8222900 DOI: 10.3389/fmed.2021.680363] [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: 03/14/2021] [Accepted: 04/27/2021] [Indexed: 12/02/2022] Open
Abstract
Poikiloderma with neutropenia (PN) is a very rare genetic disorder mainly characterized by poikiloderma and congenital neutropenia, which explains the recurrence of respiratory infections and risk of developing bronchiectasis. Patients are also prone to develop hematological and skin cancers. Here, we present the case of a patient, the only child of apparently unrelated Serbian parents, affected by PN resulting from the homozygous mutation NM_024598.3:c.243G>A (p.Trp81Ter) of USB1; early onset of poikiloderma (1 year of age) was associated with cutaneous mastocytosis. We also provide a review of the literature on this uncommon condition with a focus on dermatological findings.
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Affiliation(s)
- Vincenzo Piccolo
- Dermatology Unit, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Teresa Russo
- Dermatology Unit, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Daniela Di Pinto
- Department of Women and Child Health and General and Specialized Surgery, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Elvira Pota
- Department of Women and Child Health and General and Specialized Surgery, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Martina Di Martino
- Department of Women and Child Health and General and Specialized Surgery, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Giulio Piluso
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Andrea Ronchi
- Anatomic Pathology Unit, University of Campania "Luigi Vanvitelli", Naples, Italy
| | | | | | - Claudia Santoro
- Department of Women and Child Health and General and Specialized Surgery, University of Campania "Luigi Vanvitelli", Naples, Italy.,Department of Physical and Mental Health, and Preventive Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
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2
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Bilgic Eltan S, Sefer AP, Karakus İS, Ozen A, Karakoc-Aydiner E, Baris S. Lymphopenia with Low T and NK Cells in a Patient with USB1 Mutation, Rare Findings in Clericuzio-Type Poikiloderma with Neutropenia. J Clin Immunol 2021; 41:1106-1111. [PMID: 33624217 DOI: 10.1007/s10875-021-00998-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 02/15/2021] [Indexed: 10/22/2022]
Affiliation(s)
- Sevgi Bilgic Eltan
- School of Medicine, Division of Pediatric Allergy and Immunology, Marmara University, Istanbul, Turkey.,Istanbul Jeffrey Modell Diagnostic and Research Center for Primary Immunodeficiencies, Istanbul, Turkey.,The Isil Berat Barlan Center for Translational Medicine, Istanbul, Turkey
| | - Asena Pınar Sefer
- School of Medicine, Division of Pediatric Allergy and Immunology, Marmara University, Istanbul, Turkey.,Istanbul Jeffrey Modell Diagnostic and Research Center for Primary Immunodeficiencies, Istanbul, Turkey.,The Isil Berat Barlan Center for Translational Medicine, Istanbul, Turkey
| | | | - Ahmet Ozen
- School of Medicine, Division of Pediatric Allergy and Immunology, Marmara University, Istanbul, Turkey.,Istanbul Jeffrey Modell Diagnostic and Research Center for Primary Immunodeficiencies, Istanbul, Turkey.,The Isil Berat Barlan Center for Translational Medicine, Istanbul, Turkey
| | - Elif Karakoc-Aydiner
- School of Medicine, Division of Pediatric Allergy and Immunology, Marmara University, Istanbul, Turkey.,Istanbul Jeffrey Modell Diagnostic and Research Center for Primary Immunodeficiencies, Istanbul, Turkey.,The Isil Berat Barlan Center for Translational Medicine, Istanbul, Turkey
| | - Safa Baris
- School of Medicine, Division of Pediatric Allergy and Immunology, Marmara University, Istanbul, Turkey. .,Istanbul Jeffrey Modell Diagnostic and Research Center for Primary Immunodeficiencies, Istanbul, Turkey. .,The Isil Berat Barlan Center for Translational Medicine, Istanbul, Turkey.
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3
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Akdogan N, Kindis E, Bostan E, Utine E, Alikasifoglu M, Ersoy-Evans S. Poikiloderma with Neutropenia, Clericuzio-Type Accompanied by Loss of Digits Due to Severe Osteomyelitis. J Clin Immunol 2020; 40:934-939. [PMID: 32620997 DOI: 10.1007/s10875-020-00815-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 06/25/2020] [Indexed: 10/23/2022]
Abstract
Poikiloderma with neutropenia (PN), Clericuzio-type is a rare autosomal recessively transmitted genodermatosis caused by biallelic mutations in the USB1 gene and is characterized by early-onset poikiloderma and chronic neutropenia. Nail dystrophy, palmoplantar hyperkeratosis, hypogonadotropic hypogonadism, and recurrent infections can be associated with the disease. Herein, we present a 27-year-old Turkish male patient newly diagnosed as PN, Clericuzio-type after confirmation of a c.531delA (p.His179MetfsX86) homozygous deleterious mutation in exon 5 of the USB1 gene. The presented case highlights the importance of genetic testing for avoiding misdiagnosis based solely on clinical findings, as well as the benefit of a multi-disciplinary diagnostic approach, as he was initially misdiagnosed as Rothmund-Thompson syndrome and subsequently diagnosed as PN, Clericuzio-type at age 27 years.
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Affiliation(s)
- Neslihan Akdogan
- School of Medicine, Department of Dermatology and Venereology, Hacettepe University, Ankara, Turkey
| | - Erdem Kindis
- School of Medicine, Department of Pediatric Genetics, Hacettepe University, Ankara, Turkey
| | - Ecem Bostan
- School of Medicine, Department of Dermatology and Venereology, Hacettepe University, Ankara, Turkey
| | - Eda Utine
- School of Medicine, Department of Pediatric Genetics, Hacettepe University, Ankara, Turkey
| | - Mehmet Alikasifoglu
- School of Medicine, Department of Medical Genetics, Hacettepe University, Ankara, Turkey
| | - Sibel Ersoy-Evans
- School of Medicine, Department of Dermatology and Venereology, Hacettepe University, Ankara, Turkey.
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Sakka R, Mahjoub B, Kerkeni E, Werdani A, Boussoffara R, Ben Cheikh H, M'rad R, Sfar MT. Poikiloderma with neutropenia in a Tunisian patient with a novel C16orf57 gene mutation. Pediatr Blood Cancer 2018; 65:e27262. [PMID: 29797650 DOI: 10.1002/pbc.27262] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 05/06/2018] [Accepted: 05/07/2018] [Indexed: 12/23/2022]
Abstract
Poikiloderma with neutropenia (PN) is a genodermatosis characterized by poikiloderma, permanent neutropenia, recurrent infections, nail abnormalities, and palmoplantar hyperkeratosis. We report the case of a Tunisian patient with PN. Skin lesions started from the face and spread to the extremities and trunk. Neutropenia was initially periodic and concomitant with infections periods. DNA analysis identified a novel homozygous deletion of a 1-bp (c.161delC, p.P54RfsX60) in the C16orf57gene, presumed to be causative. This report presents the variability of the clinical manifestations and evolution of PN and emphasizes the importance of studying other patients with PN to better delineate mutations profile among populations.
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Affiliation(s)
- Rania Sakka
- Laboratory of Histology and Cytogenetics (Research Unit of Genetic, Genotoxicity and Childhood Diseases UR12ES10), Faculty of Medicine, University of Monastir, Street Avicenne, 5019, Monastir, Tunisia
| | - Bahri Mahjoub
- Department of Pediatrics, Tahar Sfar University Hospital, Mahdia, Tunisia
| | - Emna Kerkeni
- Laboratory of Histology and Cytogenetics (Research Unit of Genetic, Genotoxicity and Childhood Diseases UR12ES10), Faculty of Medicine, University of Monastir, Street Avicenne, 5019, Monastir, Tunisia
| | - Amina Werdani
- Department of Pediatrics, Tahar Sfar University Hospital, Mahdia, Tunisia
| | | | - Hassen Ben Cheikh
- Laboratory of Histology and Cytogenetics (Research Unit of Genetic, Genotoxicity and Childhood Diseases UR12ES10), Faculty of Medicine, University of Monastir, Street Avicenne, 5019, Monastir, Tunisia
| | - Ridha M'rad
- Laboratory of Human Genetics, Doctoral School of Science and Biotechnology, Faculty of Medicine of Tunis, University of Tunis El Manar, 1007 Tunis, Tunisia
| | - Mohamed Taher Sfar
- Department of Pediatrics, Tahar Sfar University Hospital, Mahdia, Tunisia
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Concolino D, Sestito S, Falvo F, Romano G, Ceravolo M, Anastasio E, Pensabene L, Colombo EA, Larizza L. Assessment of intrafamilial clinical variability of poikiloderma with neutropenia by a 10-year follow-up of three affected siblings. Eur J Med Genet 2018; 62:73-76. [PMID: 29753917 DOI: 10.1016/j.ejmg.2018.05.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 03/21/2018] [Accepted: 05/08/2018] [Indexed: 01/03/2023]
Abstract
Clericuzio-type poikiloderma with neutropenia is a well-defined nosological entity, but despite a remarkable number of clinical reports, no long term follow-up data has been presented to date regarding patients with this rare condition. Here we describe the results of clinical follow-up of three siblings, one male (Patient 1) and two females (Patients 2 and 3), subsequent to their first clinical and then molecular diagnosis of Clericuzio-type poikiloderma with neutropenia syndrome due to mutation of USB1gene. Patient 1 always expressed the most severe phenotype, while patients 2 and 3 showed an intermediate and mild phenotype, respectively, as observed since their first clinical evaluation. None of the patients developed skin cancer and/or myelodysplastic disorders considering the peripheral haematological findings. Lens opacity, never reported before, was found in two of the three patients. The long term follow-up observations confirm the stability over time of the pronounced intra-familial heterogeneity of clinical manifestations observed prior to and upon molecular diagnosis. We conclude that prolonged follow-up is an adjunct tool to monitor intra-familial variability of PN clinical spectrum which may favour surveillance of more serious complications of the disease among siblings, when a patient-specific clinical expressivity is present.
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Affiliation(s)
- Daniela Concolino
- Department of Medical and Surgical Sciences, Pediatrics Unit, University"Magna Graecia", Catanzaro, Italy.
| | - Simona Sestito
- Department of Medical and Surgical Sciences, Pediatrics Unit, University"Magna Graecia", Catanzaro, Italy
| | - Francesca Falvo
- Department of Medical and Surgical Sciences, Pediatrics Unit, University"Magna Graecia", Catanzaro, Italy
| | - Giusy Romano
- Department of Medical and Surgical Sciences, Pediatrics Unit, University"Magna Graecia", Catanzaro, Italy
| | - Miriam Ceravolo
- Department of Medical and Surgical Sciences, Pediatrics Unit, University"Magna Graecia", Catanzaro, Italy
| | - Elisa Anastasio
- Department of Medical and Surgical Sciences, Pediatrics Unit, University"Magna Graecia", Catanzaro, Italy
| | - Licia Pensabene
- Department of Medical and Surgical Sciences, Pediatrics Unit, University"Magna Graecia", Catanzaro, Italy
| | - Elisa A Colombo
- Dipartimento di Scienze della Salute, Università degli Studi di Milano, via Antonio di Rudinì 8, 20142, Milano, Italy
| | - Lidia Larizza
- Medical Cytogenetics and Molecular Genetics Laboratory, Centro di Ricerche e Tecnologie Biomediche IRCCS, Istituto Auxologico Italiano, Milan, Italy
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Colombo EA, Elcioglu NH, Graziano C, Farinelli P, Di Fede E, Neri I, Facchini E, Greco M, Gervasini C, Larizza L. Insights into Mutation Effect in Three Poikiloderma with Neutropenia Patients by Transcript Analysis and Disease Evolution of Reported Patients with the Same Pathogenic Variants. J Clin Immunol 2018; 38:494-502. [PMID: 29770900 DOI: 10.1007/s10875-018-0508-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 05/06/2018] [Indexed: 11/30/2022]
Abstract
PURPOSE Poikiloderma with neutropenia (PN) is a genodermatosis currently described in 77 patients, all presenting with early-onset poikiloderma, neutropenia, and several additional signs. Biallelic loss-of-function mutations in USB1 gene are detected in all molecularly tested patients but genotype-phenotype correlation remains elusive. Cancer predisposition is recognized among PN features and pathogenic variants found in patients who developed early in life myelodysplasia (n = 12), acute myeloid leukemia (n = 2), and squamous cell carcinoma (n = 2) should be kept into account in management and follow-up of novel patients. This will hopefully allow achieving data clustered on specific mutations relevant to oncological surveillance of the carrier patients. METHODS We describe the clinical features of three unreported PN patients and characterize their USB1 pathogenic variants by transcript analysis to get insights into the effect on the overall phenotype and disease evolution. RESULTS A Turkish boy is homozygous for the c.531delA deletion, a recurrent mutation in Turkey; an adult Italian male is compound heterozygous for two nonsense mutations, c.243G>A and c.541C>T, while an Italian boy is homozygous for the splicing c.683_693+1del variant. The identified mutations have already been reported in PN patients who developed hematologic or skin cancer. Aberrant mRNAs of all four mutated alleles could be identified confirming that transcripts of USB1 main isoform either carrying stop codons or mis-spliced may at least partially escape nonsense-mediated decay. CONCLUSIONS Our study addresses the need of gathering insights on genotype-phenotype correlations in newly described PN patients, by transcript analysis and information on disease evolution of reported patients with the same pathogenic variants.
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Affiliation(s)
- Elisa A Colombo
- Dipartimento di Scienze della Salute, Università degli Studi di Milano, via Antonio di Rudinì 8, 20142, Milan, Italy.
| | - Nursel H Elcioglu
- Department of Pediatric Genetics, Marmara University Medical School, 34890, Istanbul, Turkey.,Department of Pediatric Genetics, Turkey and Eastern Mediterranean University, Cyprus, 10, Mersin, Turkey
| | - Claudio Graziano
- U.O. Genetica Medica, Policlinico S. Orsola-Malpighi, Via Massarenti 9, 40138, Bologna, Italy
| | - Pamela Farinelli
- Clinica Dermatologica, Azienda ospedaliero universitaria "Maggiore della Carità", Corso Giuseppe Mazzini 18, 28100, Novara, Italy
| | - Elisabetta Di Fede
- Dipartimento di Scienze della Salute, Università degli Studi di Milano, via Antonio di Rudinì 8, 20142, Milan, Italy
| | - Iria Neri
- U.O. Dermatologia, Policlinico S. Orsola-Malpighi, Via Massarenti 9, 40138, Bologna, Italy
| | - Elena Facchini
- U.O. Pediatria - Programma di Oncologia, Ematologia e Trapianto, Policlinico S. Orsola-Malpighi, Via Massarenti 9, 40138, Bologna, Italy
| | - Mariangela Greco
- Divisione di Ematologia, Azienda Ospedaliero Universitaria "Maggiore della Carità", Corso Giuseppe Mazzini 18, 28100, Novara, Italy
| | - Cristina Gervasini
- Dipartimento di Scienze della Salute, Università degli Studi di Milano, via Antonio di Rudinì 8, 20142, Milan, Italy
| | - Lidia Larizza
- Laboratorio di Citogenetica Medica e Genetica Molecolare, Centro di Ricerche e Tecnologie Biomediche IRCCS-Istituto Auxologico Italiano, Via Ariosto 13, 20145, Milan, Italy
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7
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El-Heis S, Godfrey KM. The Role of Genetic Testing in Hereditary Poikiloderma: A Case Report. Glob Pediatr Health 2017; 4:2333794X17715840. [PMID: 28695158 PMCID: PMC5495503 DOI: 10.1177/2333794x17715840] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Accepted: 05/11/2017] [Indexed: 12/03/2022] Open
Affiliation(s)
- Sarah El-Heis
- MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton, UK.,University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Keith M Godfrey
- MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton, UK.,University Hospital Southampton NHS Foundation Trust, Southampton, UK
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8
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Poikiloderma with Neutropenia in Morocco: a Report of Four Cases. J Clin Immunol 2017; 37:357-362. [PMID: 28353165 DOI: 10.1007/s10875-017-0385-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 03/16/2017] [Indexed: 12/19/2022]
Abstract
PURPOSE Poikiloderma with Neutropenia (PN) is inherited genodermatosis which results from a biallelic mutation in the USB1 gene (U Six Biogenesis 1). PN, first described in Navajo Native Americans, is characterized by early onset poikiloderma, pachyonychia, palmo-plantar hyperkeratosis, and permanent neutropenia. This condition results in frequent respiratory tract infections during infancy and childhood. From 2011 to 2013, four cases of PN were diagnosed in Morocco. In this paper, we report the first four cases of PN diagnosed in Morocco, out of three unrelated consanguinous families. METHODS We investigated the genetic, immunological, and clinical features of four Moroccan patients with PN from three unrelated consanguinous families. RESULTS Mean age at onset was 3 months and mean age at diagnosis was 7.5 years. The diagnosis of these PN patients was made based on clinical features and confirmed by molecular analysis for three cases. We identified two undescribed homozygous mutations in the USB1 gene: c.609 + 1G>A in two siblings and c.518 T>G(p.(Leu173Arg)) in the other case. CONCLUSION This report confirms the clinical and genetic identity of Poikiloderma with Neutropenia syndrome.
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Walne AJ, Collopy L, Cardoso S, Ellison A, Plagnol V, Albayrak C, Albayrak D, Kilic SS, Patıroglu T, Akar H, Godfrey K, Carter T, Marafie M, Vora A, Sundin M, Vulliamy T, Tummala H, Dokal I. Marked overlap of four genetic syndromes with dyskeratosis congenita confounds clinical diagnosis. Haematologica 2016; 101:1180-1189. [PMID: 27612988 DOI: 10.3324/haematol.2016.147769] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Accepted: 06/21/2016] [Indexed: 11/09/2022] Open
Abstract
Dyskeratosis congenita is a highly pleotropic genetic disorder. This heterogeneity can lead to difficulties in making an accurate diagnosis and delays in appropriate management. The aim of this study was to determine the underlying genetic basis in patients presenting with features of dyskeratosis congenita and who were negative for mutations in the classical dyskeratosis congenita genes. By whole exome and targeted sequencing, we identified biallelic variants in genes that are not associated with dyskeratosis congenita in 17 individuals from 12 families. Specifically, these were homozygous variants in USB1 (8 families), homozygous missense variants in GRHL2 (2 families) and identical compound heterozygous variants in LIG4 (2 families). All patients had multiple somatic features of dyskeratosis congenita but not the characteristic short telomeres. Our case series shows that biallelic variants in USB1, LIG4 and GRHL2, the genes mutated in poikiloderma with neutropenia, LIG4/Dubowitz syndrome and the recently recognized ectodermal dysplasia/short stature syndrome, respectively, cause features that overlap with dyskeratosis congenita. Strikingly, these genes also overlap in their biological function with the known dyskeratosis congenita genes that are implicated in telomere maintenance and DNA repair pathways. Collectively, these observations demonstrate the marked overlap of dyskeratosis congenita with four other genetic syndromes, confounding accurate diagnosis and subsequent management. This has important implications for establishing a genetic diagnosis when a new patient presents in the clinic. Patients with clinical features of dyskeratosis congenita need to have genetic analysis of USB1, LIG4 and GRHL2 in addition to the classical dyskeratosis congenita genes and telomere length measurements.
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Affiliation(s)
- Amanda J Walne
- Centre for Genomics and Child Health, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, Barts NHS Trust, London, UK
| | - Laura Collopy
- Centre for Genomics and Child Health, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, Barts NHS Trust, London, UK
| | - Shirleny Cardoso
- Centre for Genomics and Child Health, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, Barts NHS Trust, London, UK
| | - Alicia Ellison
- Centre for Genomics and Child Health, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, Barts NHS Trust, London, UK
| | | | - Canan Albayrak
- Department of Pediatric Hematology, Ondokuz Mayis University, Samsun, Turkey
| | - Davut Albayrak
- Department of Pediatric Hematology, Ondokuz Mayis University, Samsun, Turkey
| | | | - Turkan Patıroglu
- Department of Pediatric Immunology Erciyes University Medical Facility, Kayseri, Turkey
| | - Haluk Akar
- Department of Pediatric Immunology Erciyes University Medical Facility, Kayseri, Turkey
| | - Keith Godfrey
- Department of Pediatric Dermatology and NIHR Southampton Biomedical Research Center, University Hospital, Southampton and University of Southampton, UK
| | - Tina Carter
- Department of Oncology and Haematology, Princess Margaret Hospital, Perth, WA, Australia
| | - Makia Marafie
- Clinical Cancer and Community Genetics, Kuwait Medical Genetics Center, Al-Sabah Medical area, Kuwait
| | - Ajay Vora
- Department of Haematology, Sheffield Children's NHS foundation Trust, Sheffield, UK
| | - Mikael Sundin
- Section of Pediatric Hematology/Immunology/SCT, Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden Division of Pediatrics, CLINTEC, Karolinska Institutet, Stockholm, Sweden
| | - Thomas Vulliamy
- Centre for Genomics and Child Health, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, Barts NHS Trust, London, UK
| | - Hemanth Tummala
- Centre for Genomics and Child Health, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, Barts NHS Trust, London, UK
| | - Inderjeet Dokal
- Centre for Genomics and Child Health, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, Barts NHS Trust, London, UK
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Patil P, Uechi T, Kenmochi N. Incomplete splicing of neutrophil-specific genes affects neutrophil development in a zebrafish model of poikiloderma with neutropenia. RNA Biol 2016; 12:426-34. [PMID: 25849198 DOI: 10.1080/15476286.2015.1017240] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Poikiloderma with neutropenia (PN) is a rare inherited disorder characterized by poikiloderma, facial dysmorphism, pachyonychia, short stature and neutropenia. The molecular testing of PN patients has identified mutations in the C16orf57 gene, which encodes a protein referred to as USB1 (U Six Biogenesis 1). In this study, we developed a zebrafish model of PN by the microinjection of morpholino antisense oligos to suppress usb1 gene function. Severe morphological defects, including a bent tail, thin yolk extension and reduced body length, were predominant in the Usb1-suppressed embryos (morphants). We also observed significantly decreased number of neutrophils in the morphants by Sudan Black staining. Interestingly, the splicing of genes involved in neutrophil differentiation and development, such as mpx, ncf1, ela3l and npsn, was aberrant in the morphants. However, the splicing of haematopoietic precursors and erythroid-specific genes was unaltered. Importantly, the neutrophil defects were almost completely rescued by co-injection of ela3l mRNA, the most markedly affected gene in the morphants. Our study demonstrated a possible role of USB1 in modulating the tissue-specific gene splicing that eventually leads to the impaired development of neutrophils. This zebrafish model could serve as a valuable tool to investigate the causative role of USB1 in PN pathogenesis.
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Affiliation(s)
- Prakash Patil
- a Frontier Science Research Center; University of Miyazaki; Miyazaki , Japan
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11
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Negri G, Crescenzi B, Colombo EA, Fontana L, Barba G, Arcioni F, Gervasini C, Mecucci C, Larizza L. Expanding the role of the splicingUSB1gene from Poikiloderma with Neutropenia to acquired myeloid neoplasms. Br J Haematol 2015; 171:557-65. [DOI: 10.1111/bjh.13651] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Accepted: 07/22/2015] [Indexed: 12/18/2022]
Affiliation(s)
- Gloria Negri
- Medical Genetics; Department of Health Sciences; University of Milan; Milan Italy
| | | | - Elisa Adele Colombo
- Medical Genetics; Department of Health Sciences; University of Milan; Milan Italy
| | - Laura Fontana
- Medical Genetics; Department of Health Sciences; University of Milan; Milan Italy
| | - Gianluca Barba
- Haematology Unit; Polo Unico S.M. Misericordia; Perugia Italy
| | - Francesco Arcioni
- Pediatric Oncology Haematology Unit; University of Perugia; Polo Unico S.M. Misericordia; Perugia Italy
| | - Cristina Gervasini
- Medical Genetics; Department of Health Sciences; University of Milan; Milan Italy
| | | | - Lidia Larizza
- Medical Cytogenetics and Molecular Genetics Laboratory; Centro di Ricerche e Tecnologie Biomediche IRCCS; Istituto Auxologico Italiano; Milan Italy
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