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Yang J, Shi X, Liu X, Qiao X, Zhou X, Li H, Du Y, Chen M, Fang D, Han B, Long Z. STK10 mutations block erythropoiesis in acquired pure red cell aplasia via impairing ribosome biogenesis. Ann Hematol 2024; 103:2711-2720. [PMID: 38761185 DOI: 10.1007/s00277-024-05802-z] [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: 02/27/2024] [Accepted: 05/10/2024] [Indexed: 05/20/2024]
Abstract
Acquired pure red cell aplasia (PRCA) is anemia associated with the absence of erythroblasts and is characterized by persistent and easy recurrence. However, the underlying mechanisms of acquired PRCA remain obscure, and the role of gene mutations in the pathogenesis of acquired PRCA is not fully characterized. In the present study, we detected thirty newly diagnosed patients with acquired PRCA using whole exome sequencing, and a potential role for STK10 in acquired PRCA was uncovered. The mRNA levels of STK10 in three patients with STK10 mutations were decreased. These three patients had a poor response to immunosuppressive therapy and two died in the follow-up period. Here we report that knockdown of STK10 inhibits erythroid differentiation and promotes apoptosis of K562 cells. We show that knockdown of STK10 resulted in inhibition of ribosome biogenesis and reduced ribosome levels in K562 cells. We also show that the p53 signaling pathway is activated by knockdown of STK10. Our results imply that ribosome biogenesis downregulation together with pathological p53 activation prevents normal erythropoiesis. Our study uncovers a new pathophysiological mechanism leading to acquired PRCA driven by STK10 mutations.
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Affiliation(s)
- Jichun Yang
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Xiaofeng Shi
- Department of Hematology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, 210003, China
| | - Xinyao Liu
- Department of Hematology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China
| | - Xinrui Qiao
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Xun Zhou
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Hongmin Li
- Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing, 100730, China
| | - Yali Du
- Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing, 100730, China
| | - Miao Chen
- Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing, 100730, China
| | - Dongdong Fang
- Department of Oral and Maxillofacial Surgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, 230022, China
| | - Bing Han
- Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing, 100730, China.
| | - Zhangbiao Long
- Department of Hematology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China.
- Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing, 100730, China.
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2
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Papadimitriou-Tsantarliotou A, Avgeros C, Konstantinidou M, Vizirianakis IS. Analyzing the role of ferroptosis in ribosome-related bone marrow failure disorders: From pathophysiology to potential pharmacological exploitation. IUBMB Life 2024. [PMID: 39052023 DOI: 10.1002/iub.2897] [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: 04/16/2024] [Accepted: 06/04/2024] [Indexed: 07/27/2024]
Abstract
Within the last decade, the scientific community has witnessed the importance of ferroptosis as a novel cascade of molecular events leading to cellular decisions of death distinct from apoptosis and other known forms of cell death. Notably, such non- apoptotic and iron-dependent regulated cell death has been found to be intricately linked to several physiological processes as well as to the pathogenesis of various diseases. To this end, recent data support the notion that a potential molecular connection between ferroptosis and inherited bone marrow failure (IBMF) in individuals with ribosomopathies may exist. In this review, we suggest that in ribosome-related IBMFs the identified mutations in ribosomal proteins lead to changes in the ribosome composition of the hematopoietic progenitors, changes that seem to affect ribosomal function, thus enhancing the expression of some mRNAs subgroups while reducing the expression of others. These events lead to an imbalance inside the cell as some molecular pathways are promoted while others are inhibited. This disturbance is accompanied by ROS production and lipid peroxidation, while an additional finding in most of them is iron accumulation. Once lipid peroxidation and iron accumulation are the two main characteristics of ferroptosis, it is possible that this mechanism plays a key role in the manifestation of IBMF in this type of disease. If this molecular mechanism is further confirmed, new pharmacological targets such as ferroptosis inhibitors that are already exploited for the treatment of other diseases, could be utilized to improve the treatment of ribosomopathies.
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Affiliation(s)
| | - Chrysostomos Avgeros
- Laboratory of Pharmacology, School of Pharmacy, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Maria Konstantinidou
- Laboratory of Pharmacology, School of Pharmacy, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Ioannis S Vizirianakis
- Laboratory of Pharmacology, School of Pharmacy, Aristotle University of Thessaloniki, Thessaloniki, Greece
- Department of Health Sciences, School of Life and Health Sciences, University of Nicosia, Nicosia, Cyprus
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3
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Martín-Villanueva S, Galmozzi CV, Ruger-Herreros C, Kressler D, de la Cruz J. The Beak of Eukaryotic Ribosomes: Life, Work and Miracles. Biomolecules 2024; 14:882. [PMID: 39062596 PMCID: PMC11274626 DOI: 10.3390/biom14070882] [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: 06/19/2024] [Revised: 07/19/2024] [Accepted: 07/21/2024] [Indexed: 07/28/2024] Open
Abstract
Ribosomes are not totally globular machines. Instead, they comprise prominent structural protrusions and a myriad of tentacle-like projections, which are frequently made up of ribosomal RNA expansion segments and N- or C-terminal extensions of ribosomal proteins. This is more evident in higher eukaryotic ribosomes. One of the most characteristic protrusions, present in small ribosomal subunits in all three domains of life, is the so-called beak, which is relevant for the function and regulation of the ribosome's activities. During evolution, the beak has transitioned from an all ribosomal RNA structure (helix h33 in 16S rRNA) in bacteria, to an arrangement formed by three ribosomal proteins, eS10, eS12 and eS31, and a smaller h33 ribosomal RNA in eukaryotes. In this review, we describe the different structural and functional properties of the eukaryotic beak. We discuss the state-of-the-art concerning its composition and functional significance, including other processes apparently not related to translation, and the dynamics of its assembly in yeast and human cells. Moreover, we outline the current view about the relevance of the beak's components in human diseases, especially in ribosomopathies and cancer.
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Affiliation(s)
- Sara Martín-Villanueva
- Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, E-41013 Seville, Spain; (S.M.-V.); (C.V.G.); (C.R.-H.)
- Departamento de Genética, Facultad de Biología, Universidad de Sevilla, E-41012 Seville, Spain
| | - Carla V. Galmozzi
- Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, E-41013 Seville, Spain; (S.M.-V.); (C.V.G.); (C.R.-H.)
- Departamento de Genética, Facultad de Biología, Universidad de Sevilla, E-41012 Seville, Spain
| | - Carmen Ruger-Herreros
- Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, E-41013 Seville, Spain; (S.M.-V.); (C.V.G.); (C.R.-H.)
- Departamento de Genética, Facultad de Biología, Universidad de Sevilla, E-41012 Seville, Spain
| | - Dieter Kressler
- Department of Biology, University of Fribourg, CH-1700 Fribourg, Switzerland;
| | - Jesús de la Cruz
- Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, E-41013 Seville, Spain; (S.M.-V.); (C.V.G.); (C.R.-H.)
- Departamento de Genética, Facultad de Biología, Universidad de Sevilla, E-41012 Seville, Spain
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Kong S, Zhu M, Scarpin MR, Pan D, Jia L, Martinez RE, Alamos S, Vadde BVL, Garcia HG, Qian SB, Brunkard JO, Roeder AHK. DRMY1 promotes robust morphogenesis by sustaining the translation of cytokinin signaling inhibitor proteins. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.04.07.536060. [PMID: 37066395 PMCID: PMC10104159 DOI: 10.1101/2023.04.07.536060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
Robustness is the invariant development of phenotype despite environmental changes and genetic perturbations. In the Arabidopsis flower bud, four sepals robustly initiate and grow to constant size to enclose and protect the inner floral organs. We previously characterized the mutant development related myb-like1 ( drmy1 ), where 3-5 sepals initiate variably and grow to different sizes, compromising their protective function. The molecular mechanism underlying this loss of robustness was unclear. Here, we show that drmy1 has reduced TARGET OF RAPAMYCIN (TOR) activity, ribosomal content, and translation. Translation reduction decreases the protein level of ARABIDOPSIS RESPONSE REGULATOR7 (ARR7) and ARABIDOPSIS HISTIDINE PHOSPHOTRANSFER PROTEIN 6 (AHP6), two cytokinin signaling inhibitors that are normally rapidly produced before sepal initiation. The resultant upregulation of cytokinin signaling disrupts robust auxin patterning and sepal initiation. Our work shows that the homeostasis of translation, a ubiquitous cellular process, is crucial for the robust spatiotemporal patterning of organogenesis.
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Wlodarski MW, Vlachos A, Farrar JE, Da Costa LM, Kattamis A, Dianzani I, Belendez C, Unal S, Tamary H, Pasauliene R, Pospisilova D, de la Fuente J, Iskander D, Wolfe L, Liu JM, Shimamura A, Albrecht K, Lausen B, Bechensteen AG, Tedgard U, Puzik A, Quarello P, Ramenghi U, Bartels M, Hengartner H, Farah RA, Al Saleh M, Hamidieh AA, Yang W, Ito E, Kook H, Ovsyannikova G, Kager L, Gleizes PE, Dalle JH, Strahm B, Niemeyer CM, Lipton JM, Leblanc TM. Diagnosis, treatment, and surveillance of Diamond-Blackfan anaemia syndrome: international consensus statement. Lancet Haematol 2024; 11:e368-e382. [PMID: 38697731 DOI: 10.1016/s2352-3026(24)00063-2] [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: 12/10/2022] [Revised: 02/08/2024] [Accepted: 02/16/2024] [Indexed: 05/05/2024]
Abstract
Diamond-Blackfan anaemia (DBA), first described over 80 years ago, is a congenital disorder of erythropoiesis with a predilection for birth defects and cancer. Despite scientific advances, this chronic, debilitating, and life-limiting disorder continues to cause a substantial physical, psychological, and financial toll on patients and their families. The highly complex medical needs of affected patients require specialised expertise and multidisciplinary care. However, gaps remain in effectively bridging scientific discoveries to clinical practice and disseminating the latest knowledge and best practices to providers. Following the publication of the first international consensus in 2008, advances in our understanding of the genetics, natural history, and clinical management of DBA have strongly supported the need for new consensus recommendations. In 2014 in Freiburg, Germany, a panel of 53 experts including clinicians, diagnosticians, and researchers from 27 countries convened. With support from patient advocates, the panel met repeatedly over subsequent years, engaging in ongoing discussions. These meetings led to the development of new consensus recommendations in 2024, replacing the previous guidelines. To account for the diverse phenotypes including presentation without anaemia, the panel agreed to adopt the term DBA syndrome. We propose new simplified diagnostic criteria, describe the genetics of DBA syndrome and its phenocopies, and introduce major changes in therapeutic standards. These changes include lowering the prednisone maintenance dose to maximum 0·3 mg/kg per day, raising the pre-transfusion haemoglobin to 9-10 g/dL independent of age, recommending early aggressive chelation, broadening indications for haematopoietic stem-cell transplantation, and recommending systematic clinical surveillance including early colorectal cancer screening. In summary, the current practice guidelines standardise the diagnostics, treatment, and long-term surveillance of patients with DBA syndrome of all ages worldwide.
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Affiliation(s)
- Marcin W Wlodarski
- Department of Hematology, St Jude Children's Research Hospital, Memphis, TN, USA; Division of Pediatric Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
| | - Adrianna Vlachos
- Cohen Children's Medical Center, Hematology/Oncology and Stem Cell Transplantation, Hew Hyde Park, NY, USA; Feinstein Institutes for Medical Research, Manhasset, NY, USA; Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA
| | - Jason E Farrar
- Arkansas Children's Research Institute and Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Lydie M Da Costa
- Hôpital R. DEBRE, Groupe Hospitalier Universitaire, Assistance Publique-Hôpitaux de Paris Nord, Université de Paris Cité, Paris, France; HEMATIM, EA4666, UPJV, Amiens, France; Le LabEx Gr-Ex - Biogénèse et Pathologies du Globule Rouge, Paris, France
| | - Antonis Kattamis
- First Department of Pediatrics, National and Kapodistrian University of Athens, Athens, Greece
| | - Irma Dianzani
- Department of Health Sciences, Università del Piemonte Orientale, Novara, Italy
| | - Cristina Belendez
- Pediatric Hematology and Oncology Department, Hospital Universitario Gregorio Marañón, Madrid, Spain; Facultad de Medicina, Universidad Complutense de Madrid, Madrid, Spain; Instituto Investigación Sanitaria Gregorio Marañón, Madrid, Spain; Instituto Nacional de Investigación Biomédica en Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
| | - Sule Unal
- Hacettepe University, Department of Pediatric Hematology and Research Center for Fanconi Anemia and Other Inherited Bone Marrow Failure Syndromes, Ankara, Turkey
| | - Hannah Tamary
- The Rina Zaizov Hematology-Oncology Division, Schneider Children's Medical Center of Israel, Peta Tikvah, Israel; Felsenstein Medical Research Center, Sackler School of Medicine, Tel-Aviv University, Tel Aviv, Israel
| | | | - Dagmar Pospisilova
- Department of Pediatrics, Faculty Hospital of Palacky University, Olomouc, Czech Republic
| | - Josu de la Fuente
- Department of Paediatrics, St Mary's Hospital, Imperial College Healthcare NHS Trust, London, UK; Department of Immunology and Inflammation, Imperial College London, London, UK
| | - Deena Iskander
- Department of Paediatrics, St Mary's Hospital, Imperial College Healthcare NHS Trust, London, UK; Department of Immunology and Inflammation, Imperial College London, London, UK
| | - Lawrence Wolfe
- Cohen Children's Medical Center, Hematology/Oncology and Stem Cell Transplantation, Hew Hyde Park, NY, USA; Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA
| | - Johnson M Liu
- Division of Hematology and Medical Oncology, Icahn School of Medicine at Mount Sinai, The Tisch Cancer Institute, New York, NY, USA
| | - Akiko Shimamura
- Dana Farber/Boston Children's Cancer and Blood Disorders Center, Harvard Medical School, Boston, MA, USA
| | - Katarzyna Albrecht
- Department of Oncology, Paediatric Haematology, Clinical Transplantology and Paediatrics, Medical University of Warsaw, Warsaw, Poland
| | - Birgitte Lausen
- Department of Pediatrics and Adolescent Medicine, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | | | - Ulf Tedgard
- Department of Pediatric Hematology and Oncology, Skåne University Hospital, Lund, Sweden
| | - Alexander Puzik
- Division of Pediatric Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Paola Quarello
- Department of Pediatric and Public Health Sciences, University of Turin, Turin, Italy
| | - Ugo Ramenghi
- Department of Pediatric and Public Health Sciences, University of Turin, Turin, Italy
| | - Marije Bartels
- Pediatric Hematology Department, University Medical Center Utrecht, Utrecht, Netherlands
| | - Heinz Hengartner
- Pediatric Hospital of Eastern Switzerland St Gallen, St Gallen, Switzerland
| | - Roula A Farah
- Department of Pediatrics, LAU Medical Center-Rizk Hospital, Beirut, Lebanon
| | - Mahasen Al Saleh
- King Faisal Hospital and Research Center Riyadh, Riyadh, Saudi Arabia
| | - Amir Ali Hamidieh
- Pediatric Cell and Gene Therapy Research Center, Gene, Cell & Tissue Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Wan Yang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Etsuro Ito
- Department of Pediatrics, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Hoon Kook
- Chonnam National University Hwasun Hospital, Gwangju, South Korea
| | - Galina Ovsyannikova
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia
| | - Leo Kager
- St. Anna Children's Hospital, Department of Pediatrics, Medical University Vienna, Vienna, Austria; Children's Cancer Research Institute, Vienna, Austria
| | | | - Jean-Hugues Dalle
- Pediatric Immunology and Hematology Department and CRMR aplasies médullaires, Robert Debré Hospital, Groupe Hospitalier Universitaire, Assistance Publique-Hôpitaux de Paris Nord, Université de Paris Cité, Paris, France
| | - Brigitte Strahm
- Division of Pediatric Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Charlotte M Niemeyer
- Division of Pediatric Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany; German Cancer Consortium, Freiburg, Germany; German Cancer Research Center, Heidelberg, Germany
| | - Jeffrey M Lipton
- Cohen Children's Medical Center, Hematology/Oncology and Stem Cell Transplantation, Hew Hyde Park, NY, USA; Feinstein Institutes for Medical Research, Manhasset, NY, USA; Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA
| | - Thierry M Leblanc
- Pediatric Immunology and Hematology Department and CRMR aplasies médullaires, Robert Debré Hospital, Groupe Hospitalier Universitaire, Assistance Publique-Hôpitaux de Paris Nord, Université de Paris Cité, Paris, France
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Verma SK, Kuyumcu-Martinez MN. RNA binding proteins in cardiovascular development and disease. Curr Top Dev Biol 2024; 156:51-119. [PMID: 38556427 DOI: 10.1016/bs.ctdb.2024.01.007] [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] [Indexed: 04/02/2024]
Abstract
Congenital heart disease (CHD) is the most common birth defect affecting>1.35 million newborn babies worldwide. CHD can lead to prenatal, neonatal, postnatal lethality or life-long cardiac complications. RNA binding protein (RBP) mutations or variants are emerging as contributors to CHDs. RBPs are wizards of gene regulation and are major contributors to mRNA and protein landscape. However, not much is known about RBPs in the developing heart and their contributions to CHD. In this chapter, we will discuss our current knowledge about specific RBPs implicated in CHDs. We are in an exciting era to study RBPs using the currently available and highly successful RNA-based therapies and methodologies. Understanding how RBPs shape the developing heart will unveil their contributions to CHD. Identifying their target RNAs in the embryonic heart will ultimately lead to RNA-based treatments for congenital heart disease.
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Affiliation(s)
- Sunil K Verma
- Department of Molecular Physiology and Biological Physics, University of Virginia School of Medicine Charlottesville, VA, United States.
| | - Muge N Kuyumcu-Martinez
- Department of Molecular Physiology and Biological Physics, University of Virginia School of Medicine Charlottesville, VA, United States; Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, United States; University of Virginia Cancer Center, Charlottesville, VA, United States.
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7
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Furuta Y, Tinker RJ, Gulsevin A, Neumann SM, Hamid R, Cogan JD, Rives L, Liu Q, Chen HC, Joos KM, Phillips JA. Probable digenic inheritance of Diamond-Blackfan anemia. Am J Med Genet A 2024; 194:e63454. [PMID: 37897121 DOI: 10.1002/ajmg.a.63454] [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: 08/14/2023] [Revised: 10/07/2023] [Accepted: 10/12/2023] [Indexed: 10/29/2023]
Abstract
A 26-year-old female proband with a clinical diagnosis and consistent phenotype of Diamond-Blackfan anemia (DBA, OMIM 105650) without an identified genotype was referred to the Undiagnosed Diseases Network. DBA is classically associated with monoallelic variants that have an autosomal-dominant or -recessive mode of inheritance. Intriguingly, her case was solved by a detection of a digenic interaction between non-allelic RPS19 and RPL27 variants. This was confirmed with a machine learning structural model, co-segregation analysis, and RNA sequencing. This is the first report of DBA caused by a digenic effect of two non-allelic variants demonstrated by machine learning structural model. This case suggests that atypical phenotypic presentations of DBA may be caused by digenic inheritance in some individuals. We also conclude that a machine learning structural model can be useful in detecting digenic models of possible interactions between products encoded by alleles of different genes inherited from non-affected carrier parents that can result in DBA with an unrealized 25% recurrence risk.
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Affiliation(s)
- Yutaka Furuta
- Department of Pediatrics, Division of Medical Genetics and Genomic Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Rory J Tinker
- Department of Pediatrics, Division of Medical Genetics and Genomic Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Alican Gulsevin
- Department of Chemistry, Center for Structural Biology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, Butler University, Indianapolis, Indiana, USA
| | - Serena M Neumann
- Department of Pediatrics, Division of Medical Genetics and Genomic Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Rizwan Hamid
- Department of Pediatrics, Division of Medical Genetics and Genomic Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Joy D Cogan
- Department of Pediatrics, Division of Medical Genetics and Genomic Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Lynette Rives
- Department of Pediatrics, Division of Medical Genetics and Genomic Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Qi Liu
- Department of Biostatistics and Center for Quantitative Sciences, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Hua-Chang Chen
- Department of Biostatistics and Center for Quantitative Sciences, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Karen M Joos
- Vanderbilt Eye Institute, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - John A Phillips
- Department of Pediatrics, Division of Medical Genetics and Genomic Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
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Wang M, Vulcano S, Xu C, Xie R, Peng W, Wang J, Liu Q, Jia L, Li Z, Li Y. Potentials of ribosomopathy gene as pharmaceutical targets for cancer treatment. J Pharm Anal 2024; 14:308-320. [PMID: 38618250 PMCID: PMC11010632 DOI: 10.1016/j.jpha.2023.10.001] [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: 07/10/2023] [Revised: 09/29/2023] [Accepted: 10/07/2023] [Indexed: 04/16/2024] Open
Abstract
Ribosomopathies encompass a spectrum of disorders arising from impaired ribosome biogenesis and reduced functionality. Mutation or dysexpression of the genes that disturb any finely regulated steps of ribosome biogenesis can result in different types of ribosomopathies in clinic, collectively known as ribosomopathy genes. Emerging data suggest that ribosomopathy patients exhibit a significantly heightened susceptibility to cancer. Abnormal ribosome biogenesis and dysregulation of some ribosomopathy genes have also been found to be intimately associated with cancer development. The correlation between ribosome biogenesis or ribosomopathy and the development of malignancies has been well established. This work aims to review the recent advances in the research of ribosomopathy genes among human cancers and meanwhile, to excavate the potential role of these genes, which have not or rarely been reported in cancer, in the disease development across cancers. We plan to establish a theoretical framework between the ribosomopathy gene and cancer development, to further facilitate the potential of these genes as diagnostic biomarker as well as pharmaceutical targets for cancer treatment.
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Affiliation(s)
- Mengxin Wang
- Key Laboratory of Biomaterials and Biofabrication in Tissue Engineering of Jiangxi Province, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
- School of Rehabilitation Medicine, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
| | - Stephen Vulcano
- Autoimmunity and Inflammation Program, HSS Research Institute, Hospital for Special Surgery New York, New York, NY, 10021, USA
| | - Changlu Xu
- Division of Oral and Systemic Health Sciences, School of Dentistry, University of California, Los Angeles, CA, 90095, USA
| | - Renjian Xie
- Key Laboratory of Biomaterials and Biofabrication in Tissue Engineering of Jiangxi Province, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
- School of Medical Information Engineering, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
| | - Weijie Peng
- Key Laboratory of Biomaterials and Biofabrication in Tissue Engineering of Jiangxi Province, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
| | - Jie Wang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, Institute for Liver Diseases of Anhui Medical University, School of Pharmacy, Anhui Medical University, Hefei, 230032, China
| | - Qiaojun Liu
- Key Laboratory of Biomaterials and Biofabrication in Tissue Engineering of Jiangxi Province, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
- School of Basic Medicine, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
| | - Lee Jia
- Institute of Oceanography, Minjiang University, Fuzhou, 350108, China
| | - Zhi Li
- Division of Oral and Systemic Health Sciences, School of Dentistry, University of California, Los Angeles, CA, 90095, USA
| | - Yumei Li
- Key Laboratory of Biomaterials and Biofabrication in Tissue Engineering of Jiangxi Province, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
- School of Basic Medicine, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
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9
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Da Costa L, Mohandas N, David-NGuyen L, Platon J, Marie I, O'Donohue MF, Leblanc T, Gleizes PE. Diamond-Blackfan anemia, the archetype of ribosomopathy: How distinct is it from the other constitutional ribosomopathies? Blood Cells Mol Dis 2024:102838. [PMID: 38413287 DOI: 10.1016/j.bcmd.2024.102838] [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: 11/15/2023] [Revised: 02/16/2024] [Accepted: 02/16/2024] [Indexed: 02/29/2024]
Abstract
Diamond-Blackfan anemia (DBA) was the first ribosomopathy described in humans. DBA is a congenital hypoplastic anemia, characterized by macrocytic aregenerative anemia, manifesting by differentiation blockage between the BFU-e/CFU-e developmental erythroid progenitor stages. In 50 % of the DBA cases, various malformations are noted. Strikingly, for a hematological disease with a relative erythroid tropism, DBA is due to ribosomal haploinsufficiency in 24 different ribosomal protein (RP) genes. A few other genes have been described in DBA-like disorders, but they do not fit into the classical DBA phenotype (Sankaran et al., 2012; van Dooijeweert et al., 2022; Toki et al., 2018; Kim et al., 2017 [1-4]). Haploinsufficiency in a RP gene leads to defective ribosomal RNA (rRNA) maturation, which is a hallmark of DBA. However, the mechanistic understandings of the erythroid tropism defect in DBA are still to be fully defined. Erythroid defect in DBA has been recently been linked in a non-exclusive manner to a number of mechanisms that include: 1) a defect in translation, in particular for the GATA1 erythroid gene; 2) a deficit of HSP70, the GATA1 chaperone, and 3) free heme toxicity. In addition, p53 activation in response to ribosomal stress is involved in DBA pathophysiology. The DBA phenotype may thus result from the combined contributions of various actors, which may explain the heterogenous phenotypes observed in DBA patients, even within the same family.
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Affiliation(s)
- L Da Costa
- Service d'Hématologie Biologique (Hematology Diagnostic Lab), AP-HP, Hôpital Bicêtre, F-94270 Le Kremlin-Bicêtre, France; University of Paris Saclay, F-94270 Le Kremlin-Bicêtre, France; University of Paris Cité, F-75010 Paris, France; University of Picardie Jules Verne, F-80000 Amiens, France; Inserm U1170, IGR, F-94805 Villejuif/HEMATIM UR4666, F-80000 Amiens, France; Laboratory of Excellence for Red Cells, LABEX GR-Ex, F-75015 Paris, France.
| | | | - Ludivine David-NGuyen
- Service d'Hématologie Biologique (Hematology Diagnostic Lab), AP-HP, Hôpital Bicêtre, F-94270 Le Kremlin-Bicêtre, France
| | - Jessica Platon
- Inserm U1170, IGR, F-94805 Villejuif/HEMATIM UR4666, F-80000 Amiens, France
| | - Isabelle Marie
- Service d'Hématologie Biologique (Hematology Diagnostic Lab), AP-HP, Hôpital Bicêtre, F-94270 Le Kremlin-Bicêtre, France
| | - Marie Françoise O'Donohue
- Molecular, Cellular and Developmental biology department (MCD), Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Thierry Leblanc
- Service d'immuno-hématologie pédiatrique, Hôpital Robert-Debré, F-75019 Paris, France
| | - Pierre-Emmanuel Gleizes
- Molecular, Cellular and Developmental biology department (MCD), Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UPS, Toulouse, France
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10
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Setiadi A, Singh C, Li A, Au N, Amid A. Monolobated megakaryocytes in Diamond-Blackfan anemia with RPL5 mutation at disease presentation mimicking myelodysplastic syndrome. Pediatr Blood Cancer 2024; 71:e30771. [PMID: 37988264 DOI: 10.1002/pbc.30771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 11/01/2023] [Accepted: 11/03/2023] [Indexed: 11/23/2023]
Affiliation(s)
- Audi Setiadi
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
- Department of Pathology and Laboratory Medicine, Division of Hematopathology, BC Children's Hospital, Vancouver, British Columbia, Canada
| | - Claudia Singh
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Amanda Li
- Division of Hematology & Oncology, BC Children's Hospital, Vancouver, British Columbia, Canada
| | - Nicholas Au
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
- Department of Pathology and Laboratory Medicine, Division of Hematopathology, BC Children's Hospital, Vancouver, British Columbia, Canada
| | - Ali Amid
- Division of Hematology & Oncology, BC Children's Hospital, Vancouver, British Columbia, Canada
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11
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Liu Y, Karlsson S. Perspectives of current understanding and therapeutics of Diamond-Blackfan anemia. Leukemia 2024; 38:1-9. [PMID: 37973818 PMCID: PMC10776401 DOI: 10.1038/s41375-023-02082-w] [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: 08/18/2023] [Revised: 10/20/2023] [Accepted: 11/06/2023] [Indexed: 11/19/2023]
Abstract
ABSTACT Diamond-Blackfan anemia (DBA) is a rare congenital bone marrow failure disorder characterized by erythroid hypoplasia. It primarily affects infants and is often caused by heterozygous allelic variations in ribosomal protein (RP) genes. Recent studies also indicated that non-RP genes like GATA1, TSR2, are associated with DBA. P53 activation, translational dysfunction, inflammation, imbalanced globin/heme synthesis, and autophagy dysregulation were shown to contribute to disrupted erythropoiesis and impaired red blood cell production. The main therapeutic option for DBA patients is corticosteroids. However, half of these patients become non-responsive to corticosteroid therapy over prolonged treatment and have to be given blood transfusions. Hematopoietic stem cell transplantation is currently the sole curative option, however, the treatment is limited by the availability of suitable donors and the potential for serious immunological complications. Recent advances in gene therapy using lentiviral vectors have shown promise in treating RPS19-deficient DBA by promoting normal hematopoiesis. With deepening insights into the molecular framework of DBA, emerging therapies like gene therapy hold promise for providing curative solutions and advancing comprehension of the underlying disease mechanisms.
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Affiliation(s)
- Yang Liu
- Center for Hematology and Regenerative Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden.
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, Lund, Sweden.
| | - Stefan Karlsson
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, Lund, Sweden.
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12
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Dorenkamp M, Porret N, Diepold M, Rovó A. A De Novo Frameshift Mutation in RPL5 with Classical Phenotype Abnormalities and Worsening Anemia Diagnosed in a Young Adult-A Case Report and Review of the Literature. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:1953. [PMID: 38004002 PMCID: PMC10673431 DOI: 10.3390/medicina59111953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 10/31/2023] [Accepted: 11/03/2023] [Indexed: 11/26/2023]
Abstract
Diamond-Blackfan anemia (DBA) is a congenital bone marrow failure syndrome associated with malformations. DBA is related to defective ribosome biogenesis, which impairs erythropoiesis, causing hyporegenerative macrocytic anemia. The disease has an autosomal dominant inheritance and is commonly diagnosed in the first year of life, requiring continuous treatment. We present the case of a young woman who, at the age of 21, developed severe symptomatic anemia. Although, due to malformations, a congenital syndrome had been suspected since birth, a confirmation diagnosis was not made until the patient was referred to our center for an evaluation of her anemia. In her neonatal medical history, she presented with anemia that required red blood cell transfusions, but afterwards remained with a stable, mild, asymptomatic anemia throughout her childhood and adolescence. Her family history was otherwise unremarkable. To explain the symptomatic anemia, vitamin deficiencies, autoimmune diseases, bleeding causes, and myeloid and lymphoid neoplasms were investigated and ruled out. A molecular investigation showed the RPL5 gene variant c.392dup, p.(Asn131Lysfs*6), confirming the diagnosis of DBA. All family members have normal blood values and none harbored the mutation. Here, we will discuss the unusual evolution of this case and revisit the literature.
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Affiliation(s)
- Moritz Dorenkamp
- Department of Hematology and Central Hematology Laboratory, Bern University Hospital (INSELSPITAL), 3010 Bern, Switzerland
| | - Naomi Porret
- Department of Hematology and Central Hematology Laboratory, Bern University Hospital (INSELSPITAL), 3010 Bern, Switzerland
| | - Miriam Diepold
- Division of Pediatric Hematology & Oncology, Department of Pediatrics, Bern University Hospital (INSELSPITAL), 3010 Bern, Switzerland
| | - Alicia Rovó
- Department of Hematology and Central Hematology Laboratory, Bern University Hospital (INSELSPITAL), 3010 Bern, Switzerland
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13
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Li J, Su Y, Chen L, Lin Y, Ru K. Identification of novel mutations in patients with Diamond-Blackfan anemia and literature review of RPS10 and RPS26 mutations. Int J Lab Hematol 2023; 45:766-773. [PMID: 37376976 DOI: 10.1111/ijlh.14126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 06/04/2023] [Indexed: 06/29/2023]
Abstract
INTRODUCTION Diamond-Blackfan anemia (DBA) is a rare congenital bone marrow failure syndrome characterized by erythroid aplasia, physical malformation, and cancer predisposition. Twenty ribosomal protein genes and three non-ribosomal protein genes have been identified associated with DBA. METHODS To investigate the presence of novel mutations and gain a deeper understanding of the molecular mechanisms of disease, targeted next-generation sequencing was performed in 12 patients with clinically suspected DBA. Literatures were retrieved with complete clinical information published in English by November 2022. The clinical features, treatment, and RPS10/RPS26 mutations were analyzed. RESULTS Among the 12 patients, 11 mutations were identified and 5 of them were novel (RPS19, p.W52S; RPS10, p.P106Qfs*11; RPS26, p.R28*; RPL5, p.R35*; RPL11, p.T44Lfs*40). Including 2 patients in this study, 13 patients with RPS10 mutations and 38 patients with RPS26 mutations were reported from 4 and 6 countries, respectively. The incidences of physical malformation in patients with RPS10 and RPS26 mutations (22% and 36%, respectively) were lower than the overall incidence in DBA patients (~50%). Patients with RPS26 mutations had a worse response rate of steroid therapy than RPS10 (47% vs. 87.5%), but preferred RBC transfusions (67% vs. 44%, p = 0.0253). CONCLUSION Our findings add to the DBA pathogenic variant database and demonstrate the clinical presentations of the DBA patients with RPS10/RPS26 mutations. It shows that next-generation sequencing is a powerful tool for the diagnosis of genetic diseases such as DBA.
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Affiliation(s)
- Jing Li
- SINO-US Diagnostics, Tianjin Enterprise Key Laboratory of AI-aided Hematopathology Diagnosis, Tianjin, China
| | - Yongfeng Su
- Department of Hematology for Seniors, the Fifth Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Long Chen
- SINO-US Diagnostics, Tianjin Enterprise Key Laboratory of AI-aided Hematopathology Diagnosis, Tianjin, China
| | - Yani Lin
- SINO-US Diagnostics, Tianjin Enterprise Key Laboratory of AI-aided Hematopathology Diagnosis, Tianjin, China
| | - Kun Ru
- SINO-US Diagnostics, Tianjin Enterprise Key Laboratory of AI-aided Hematopathology Diagnosis, Tianjin, China
- Department of Pathology and Lab Medicine, Shandong Cancer Hospital, Jinan, Shandong, China
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14
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Walton NA, Nguyen HH, Procknow SS, Johnson D, Anzelmi A, Jay PY. Repurposing Normal Chromosomal Microarray Data to Harbor Genetic Insights into Congenital Heart Disease. BIOLOGY 2023; 12:1290. [PMID: 37887000 PMCID: PMC10604103 DOI: 10.3390/biology12101290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 09/08/2023] [Accepted: 09/08/2023] [Indexed: 10/28/2023]
Abstract
About 15% of congenital heart disease (CHD) patients have a known pathogenic copy number variant. The majority of their chromosomal microarray (CMA) tests are deemed normal. Diagnostic interpretation typically ignores microdeletions smaller than 100 kb. We hypothesized that unreported microdeletions are enriched for CHD genes. We analyzed "normal" CMAs of 1762 patients who were evaluated at a pediatric referral center, of which 319 (18%) had CHD. Using CMAs from monozygotic twins or replicates from the same individual, we established a size threshold based on probe count for the reproducible detection of small microdeletions. Genes in the microdeletions were sequentially filtered by their nominal association with a CHD diagnosis, the expression level in the fetal heart, and the deleteriousness of a loss-of-function mutation. The subsequent enrichment for CHD genes was assessed using the presence of known or potentially novel genes implicated by a large whole-exome sequencing study of CHD. The unreported microdeletions were modestly enriched for both known CHD genes and those of unknown significance identified using their de novo mutation in CHD patients. Our results show that readily available "normal" CMA data can be a fruitful resource for genetic discovery and that smaller deletions should receive more attention in clinical evaluation.
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Affiliation(s)
- Nephi A. Walton
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Hoang H. Nguyen
- Department of Pediatrics, UT Southwestern Medical Center, Dallas, TX 75390, USA;
| | - Sara S. Procknow
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Darren Johnson
- Genomic Medicine Institute, Geisinger, Danville, PA 17822, USA
| | - Alexander Anzelmi
- Department of Medicine, Thomas Jefferson University Hospitals, Philadelphia, PA 19107, USA
| | - Patrick Y. Jay
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO 63110, USA
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15
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Iskander D, Roy NBA, Payne E, Drasar E, Hennessy K, Harrington Y, Christodoulidou C, Karadimitris A, Batkin L, de la Fuente J. Diamond-Blackfan anemia in adults: In pursuit of a common approach for a rare disease. Blood Rev 2023; 61:101097. [PMID: 37263874 DOI: 10.1016/j.blre.2023.101097] [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: 11/22/2022] [Revised: 04/19/2023] [Accepted: 05/07/2023] [Indexed: 06/03/2023]
Abstract
Diamond-Blackfan anemia (DBA) is a rare bone marrow failure syndrome, usually caused by loss-of function variants in genes encoding ribosomal proteins. The hallmarks of DBA are anemia, congenital anomalies and cancer predisposition. Although DBA usually presents in childhood, the prevalence in later life is increasing due to an expanding repertoire of implicated genes, improvements in genetic diagnosis and increasing life expectancy. Adult patients uniquely suffer the manifestations of end-organ damage caused by the disease and its treatment, and transition to adulthood poses specific issues in disease management. To standardize and optimize care for this rare disease, in this review we provide updated guidance on the diagnosis and management of DBA, with a specific focus on older adolescents and adults. Recommendations are based upon published literature and our pooled clinical experience from three centres in the United Kingdom (U·K.). Uniquely we have also solicited and incorporated the views of affected families, represented by the independent patient organization, DBA U.K.
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Affiliation(s)
- Deena Iskander
- Centre for Haematology, Department of Immunology & Inflammation, Imperial College London, London W12 0NN, UK.
| | - Noémi B A Roy
- Oxford University Hospitals NHS Foundation Trust and University of Oxford, OX3 9DU, UK
| | - Elspeth Payne
- UCL Cancer Institute, Dept of Hematology, London WC1 E6BT, UK; Dept of Hematology, University College Hospital London, NW1 2BU, UK
| | - Emma Drasar
- Whittington Health NHS Trust and University College Hospital London, N19 5NF, UK
| | - Kelly Hennessy
- Department of Paediatrics, St. Mary's Hospital, Imperial College Healthcare NHS Trust, London W2 1NY, UK
| | - Yvonne Harrington
- Department of Paediatrics, St. Mary's Hospital, Imperial College Healthcare NHS Trust, London W2 1NY, UK
| | - Chrysi Christodoulidou
- Centre for Haematology, Department of Immunology & Inflammation, Imperial College London, London W12 0NN, UK
| | - Anastasios Karadimitris
- Centre for Haematology, Department of Immunology & Inflammation, Imperial College London, London W12 0NN, UK
| | - Leisa Batkin
- DBA, UK 71-73 Main Street, Palterton, Chesterfield, S44 6UR, UK
| | - Josu de la Fuente
- Department of Paediatrics, St. Mary's Hospital, Imperial College Healthcare NHS Trust, London W2 1NY, UK.
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16
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Castillo Duque de Estrada NM, Thoms M, Flemming D, Hammaren HM, Buschauer R, Ameismeier M, Baßler J, Beck M, Beckmann R, Hurt E. Structure of nascent 5S RNPs at the crossroad between ribosome assembly and MDM2-p53 pathways. Nat Struct Mol Biol 2023; 30:1119-1131. [PMID: 37291423 PMCID: PMC10442235 DOI: 10.1038/s41594-023-01006-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Accepted: 03/26/2023] [Indexed: 06/10/2023]
Abstract
The 5S ribonucleoprotein (RNP) is assembled from its three components (5S rRNA, Rpl5/uL18 and Rpl11/uL5) before being incorporated into the pre-60S subunit. However, when ribosome synthesis is disturbed, a free 5S RNP can enter the MDM2-p53 pathway to regulate cell cycle and apoptotic signaling. Here we reconstitute and determine the cryo-electron microscopy structure of the conserved hexameric 5S RNP with fungal or human factors. This reveals how the nascent 5S rRNA associates with the initial nuclear import complex Syo1-uL18-uL5 and, upon further recruitment of the nucleolar factors Rpf2 and Rrs1, develops into the 5S RNP precursor that can assemble into the pre-ribosome. In addition, we elucidate the structure of another 5S RNP intermediate, carrying the human ubiquitin ligase Mdm2, which unravels how this enzyme can be sequestered from its target substrate p53. Our data provide molecular insight into how the 5S RNP can mediate between ribosome biogenesis and cell proliferation.
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Affiliation(s)
| | - Matthias Thoms
- Gene Center, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Dirk Flemming
- Heidelberg University Biochemistry Center (BZH), Heidelberg, Germany
| | - Henrik M Hammaren
- European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
- Max Planck Institute of Biophysics, Frankfurt am Main, Germany
| | - Robert Buschauer
- Gene Center, Ludwig-Maximilians-Universität München, Munich, Germany
| | | | - Jochen Baßler
- Heidelberg University Biochemistry Center (BZH), Heidelberg, Germany
| | - Martin Beck
- European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
- Max Planck Institute of Biophysics, Frankfurt am Main, Germany
| | - Roland Beckmann
- Gene Center, Ludwig-Maximilians-Universität München, Munich, Germany.
| | - Ed Hurt
- Heidelberg University Biochemistry Center (BZH), Heidelberg, Germany.
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17
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Nguyen T, Mills JC, Cho CJ. The coordinated management of ribosome and translation during injury and regeneration. Front Cell Dev Biol 2023; 11:1186638. [PMID: 37427381 PMCID: PMC10325863 DOI: 10.3389/fcell.2023.1186638] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 06/06/2023] [Indexed: 07/11/2023] Open
Abstract
Diverse acute and chronic injuries induce damage responses in the gastrointestinal (GI) system, and numerous cell types in the gastrointestinal tract demonstrate remarkable resilience, adaptability, and regenerative capacity in response to stress. Metaplasias, such as columnar and secretory cell metaplasia, are well-known adaptations that these cells make, the majority of which are epidemiologically associated with an elevated cancer risk. On a number of fronts, it is now being investigated how cells respond to injury at the tissue level, where diverse cell types that differ in proliferation capacity and differentiation state cooperate and compete with one another to participate in regeneration. In addition, the cascades or series of molecular responses that cells show are just beginning to be understood. Notably, the ribosome, a ribonucleoprotein complex that is essential for translation on the endoplasmic reticulum (ER) and in the cytoplasm, is recognized as the central organelle during this process. The highly regulated management of ribosomes as key translational machinery, and their platform, rough endoplasmic reticulum, are not only essential for maintaining differentiated cell identity, but also for achieving successful cell regeneration after injury. This review will cover in depth how ribosomes, the endoplasmic reticulum, and translation are regulated and managed in response to injury (e.g., paligenosis), as well as why this is essential for the proper adaptation of a cell to stress. For this, we will first discuss how multiple gastrointestinal organs respond to stress through metaplasia. Next, we will cover how ribosomes are generated, maintained, and degraded, in addition to the factors that govern translation. Finally, we will investigate how ribosomes and translation machinery are dynamically regulated in response to injury. Our increased understanding of this overlooked cell fate decision mechanism will facilitate the discovery of novel therapeutic targets for gastrointestinal tract tumors, focusing on ribosomes and translation machinery.
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Affiliation(s)
- Thanh Nguyen
- Department of Medicine, Baylor College of Medicine, Houston, TX, United States
| | - Jason C. Mills
- Department of Medicine, Baylor College of Medicine, Houston, TX, United States
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX, United States
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, United States
| | - Charles J. Cho
- Department of Medicine, Baylor College of Medicine, Houston, TX, United States
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18
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Smallwood K, Watt KEN, Ide S, Baltrunaite K, Brunswick C, Inskeep K, Capannari C, Adam MP, Begtrup A, Bertola DR, Demmer L, Demo E, Devinsky O, Gallagher ER, Guillen Sacoto MJ, Jech R, Keren B, Kussmann J, Ladda R, Lansdon LA, Lunke S, Mardy A, McWalters K, Person R, Raiti L, Saitoh N, Saunders CJ, Schnur R, Skorvanek M, Sell SL, Slavotinek A, Sullivan BR, Stark Z, Symonds JD, Wenger T, Weber S, Whalen S, White SM, Winkelmann J, Zech M, Zeidler S, Maeshima K, Stottmann RW, Trainor PA, Weaver KN. POLR1A variants underlie phenotypic heterogeneity in craniofacial, neural, and cardiac anomalies. Am J Hum Genet 2023; 110:809-825. [PMID: 37075751 PMCID: PMC10183370 DOI: 10.1016/j.ajhg.2023.03.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 03/21/2023] [Indexed: 04/21/2023] Open
Abstract
Heterozygous pathogenic variants in POLR1A, which encodes the largest subunit of RNA Polymerase I, were previously identified as the cause of acrofacial dysostosis, Cincinnati-type. The predominant phenotypes observed in the cohort of 3 individuals were craniofacial anomalies reminiscent of Treacher Collins syndrome. We subsequently identified 17 additional individuals with 12 unique heterozygous variants in POLR1A and observed numerous additional phenotypes including neurodevelopmental abnormalities and structural cardiac defects, in combination with highly prevalent craniofacial anomalies and variable limb defects. To understand the pathogenesis of this pleiotropy, we modeled an allelic series of POLR1A variants in vitro and in vivo. In vitro assessments demonstrate variable effects of individual pathogenic variants on ribosomal RNA synthesis and nucleolar morphology, which supports the possibility of variant-specific phenotypic effects in affected individuals. To further explore variant-specific effects in vivo, we used CRISPR-Cas9 gene editing to recapitulate two human variants in mice. Additionally, spatiotemporal requirements for Polr1a in developmental lineages contributing to congenital anomalies in affected individuals were examined via conditional mutagenesis in neural crest cells (face and heart), the second heart field (cardiac outflow tract and right ventricle), and forebrain precursors in mice. Consistent with its ubiquitous role in the essential function of ribosome biogenesis, we observed that loss of Polr1a in any of these lineages causes cell-autonomous apoptosis resulting in embryonic malformations. Altogether, our work greatly expands the phenotype of human POLR1A-related disorders and demonstrates variant-specific effects that provide insights into the underlying pathogenesis of ribosomopathies.
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Affiliation(s)
- Kelly Smallwood
- Division of Human Genetics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | | | - Satoru Ide
- Genome Dynamics Laboratory, National Institute of Genetics, Mishima, Shizuoka, Japan; Department of Genetics, School of Life Science, Sokendai (Graduate University for Advanced Studies), Mishima, Shizuoka, Japan
| | - Kristina Baltrunaite
- Division of Human Genetics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Chad Brunswick
- Division of Human Genetics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Katherine Inskeep
- Steve and Cindy Rasmussen Institute for Genomic Medicine, Nationwide Children's Hospital, Columbus, OH, USA; Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Corrine Capannari
- Division of Human Genetics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Margaret P Adam
- Department of Pediatrics, University of Washington, Seattle, WA, USA
| | | | | | - Laurie Demmer
- Atrium Health's Levine Children's Hospital, Charlotte, NC, USA
| | - Erin Demo
- Sibley Heart Center, Atlanta, GA, USA
| | - Orrin Devinsky
- Department of Neurology, Comprehensive Epilepsy Center, New York University Grossman School of Medicine, New York, NY, USA
| | - Emily R Gallagher
- Department of Pediatrics, University of Washington, Seattle, WA, USA
| | | | - Robert Jech
- Department of Neurology, Charles University, 1st Faculty of Medicine and General University Hospital in Prague, Prague, Czech Republic
| | - Boris Keren
- Genetic Department, APHP, Sorbonne Université, Pitié-Salpêtrière Hospital, 47-83 Boulevard de l'Hôpital, 75013 Paris, France
| | - Jennifer Kussmann
- Division of Clinical Genetics, Department of Pediatrics, Children's Mercy Kansas City, 2401 Gillham Road, Kansas City, MO, USA
| | - Roger Ladda
- Department of Pediatrics, Penn State Health Children's Hospital, Hershey, PA, USA
| | - Lisa A Lansdon
- Department of Pathology and Laboratory Medicine, Children's Mercy Kansas City, 2401 Gillham Road, Kansas City, MO, USA; Genomic Medicine Center, Children's Mercy Research Institute, 2401 Gillham Road, Kansas City, MO, USA; School of Medicine, University of Missouri-Kansas City, 2411 Holmes Street, Kansas City, MO, USA
| | - Sebastian Lunke
- Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Flemington Road, Melbourne, VIC, Australia; University of Melbourne, Melbourne, VIC, Australia; Australian Genomics, Melbourne, VIC, Australia
| | - Anne Mardy
- Department of Women's Health, University of Texas Austin Dell Medical Center, Austin, TX, USA
| | | | | | - Laura Raiti
- Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Flemington Road, Melbourne, VIC, Australia
| | | | - Carol J Saunders
- Department of Pathology and Laboratory Medicine, Children's Mercy Kansas City, 2401 Gillham Road, Kansas City, MO, USA; Genomic Medicine Center, Children's Mercy Research Institute, 2401 Gillham Road, Kansas City, MO, USA; School of Medicine, University of Missouri-Kansas City, 2411 Holmes Street, Kansas City, MO, USA
| | | | - Matej Skorvanek
- Department of Neurology, P.J. Safarik University, Kosice, Slovak Republic; Department of Neurology, University Hospital of L. Pasteur, Kosice, Slovak Republic
| | - Susan L Sell
- Department of Pediatrics, Penn State Health Children's Hospital, Hershey, PA, USA
| | - Anne Slavotinek
- Division of Medical Genetics, Department of Pediatrics, University of California San Francisco, San Francisco, CA, USA
| | - Bonnie R Sullivan
- Division of Clinical Genetics, Department of Pediatrics, Children's Mercy Kansas City, 2401 Gillham Road, Kansas City, MO, USA
| | - Zornitza Stark
- Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Flemington Road, Melbourne, VIC, Australia; University of Melbourne, Melbourne, VIC, Australia; Australian Genomics, Melbourne, VIC, Australia
| | - Joseph D Symonds
- Paediatric Neuroscience Research Group, Royal Hospital for Children, Glasgow G667AB, UK
| | - Tara Wenger
- Department of Pediatrics, University of Washington, Seattle, WA, USA
| | - Sacha Weber
- CCA-AHU de génétique clinique et de neurogénétique, Service de Génétique et de Neurologie, CHU de Caen, Caen, France
| | - Sandra Whalen
- Genetic Department, APHP, Sorbonne Université, Pitié-Salpêtrière Hospital, 47-83 Boulevard de l'Hôpital, 75013 Paris, France
| | - Susan M White
- Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Flemington Road, Melbourne, VIC, Australia; University of Melbourne, Melbourne, VIC, Australia
| | - Juliane Winkelmann
- Institute of Neurogenomics, Helmholtz Zentrum München, Munich, Germany; Institute of Human Genetics, School of Medicine, Technical University of Munich, Munich, Germany; Lehrstuhl für Neurogenetik, Technische Universität München, Munich, Germany; Munich Cluster for Systems Neurology, SyNergy, Munich, Germany
| | - Michael Zech
- Institute of Neurogenomics, Helmholtz Zentrum München, Munich, Germany; Institute of Human Genetics, School of Medicine, Technical University of Munich, Munich, Germany
| | - Shimriet Zeidler
- Department of Clinical Genetics, Erasmus MC, Rotterdam, the Netherlands
| | - Kazuhiro Maeshima
- Genome Dynamics Laboratory, National Institute of Genetics, Mishima, Shizuoka, Japan; Department of Genetics, School of Life Science, Sokendai (Graduate University for Advanced Studies), Mishima, Shizuoka, Japan
| | - Rolf W Stottmann
- Steve and Cindy Rasmussen Institute for Genomic Medicine, Nationwide Children's Hospital, Columbus, OH, USA; Department of Pediatrics, The Ohio State University School of Medicine, Columbus, OH, USA
| | - Paul A Trainor
- Stowers Institute for Medical Research, Kansas City, MO, USA; Department of Anatomy and Cell Biology, University of Kansas Medical Center, Kansas City, KS, USA
| | - K Nicole Weaver
- Division of Human Genetics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
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19
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Luo J, Zhao H, Chen L, Liu M. Multifaceted functions of RPS27a: An unconventional ribosomal protein. J Cell Physiol 2023; 238:485-497. [PMID: 36580426 DOI: 10.1002/jcp.30941] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 11/28/2022] [Accepted: 12/21/2022] [Indexed: 12/30/2022]
Abstract
The ribosomal protein S27a (RPS27a) is cleaved from the fusion protein ubiquitin-RPS27a (Ub-RPS27a). Generally, Ub and RPS27a are coexpressed as a fusion protein but function independently after Ub is cleaved from RPS27a by a deubiquitinating enzyme. As an RP, RPS27a assembles into ribosomes, but it also functions independently of ribosomes. RPS27a is involved in the development and poor prognosis of various cancers, such as colorectal cancer, liver cancer, chronic myeloid leukemia, and renal carcinoma, and is associated with poor prognosis. Notably, the murine double minute 2/P53 axis is a major pathway through which RPS27a regulates cancer development. Moreover, RPS27a maintains sperm motility, regulates winged aphid indirect flight muscle degeneration, and facilitates plant growth. Additionally, RPS27a is a metalloprotein and mercury (Hg) biomarker. In the present review, we described the origin, structure, and biological functions of RPS27a.
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Affiliation(s)
- Jingshun Luo
- Key Laboratory of Cardiovascular Diseases of Yunnan Province, Key Laboratory of Tumor Immunological Prevention and Treatment of Yunnan Province, Central laboratory of Yan'an Hospital Affiliated to Kunming Medical University, Kunming, Yunnan, China
- Institute of Pharmacy and Pharmacology, Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Hong Zhao
- Institute of Pharmacy and Pharmacology, Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical School, University of South China, Hengyang, Hunan, China
- Nursing College, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Linxi Chen
- Institute of Pharmacy and Pharmacology, Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical School, University of South China, Hengyang, Hunan, China
| | - Meiqing Liu
- Key Laboratory of Cardiovascular Diseases of Yunnan Province, Key Laboratory of Tumor Immunological Prevention and Treatment of Yunnan Province, Central laboratory of Yan'an Hospital Affiliated to Kunming Medical University, Kunming, Yunnan, China
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20
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Zogopoulos VL, Malatras A, Kyriakidis K, Charalampous C, Makrygianni EA, Duguez S, Koutsi MA, Pouliou M, Vasileiou C, Duddy WJ, Agelopoulos M, Chrousos GP, Iconomidou VA, Michalopoulos I. HGCA2.0: An RNA-Seq Based Webtool for Gene Coexpression Analysis in Homo sapiens. Cells 2023; 12:cells12030388. [PMID: 36766730 PMCID: PMC9913097 DOI: 10.3390/cells12030388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 01/09/2023] [Accepted: 01/19/2023] [Indexed: 01/24/2023] Open
Abstract
Genes with similar expression patterns in a set of diverse samples may be considered coexpressed. Human Gene Coexpression Analysis 2.0 (HGCA2.0) is a webtool which studies the global coexpression landscape of human genes. The website is based on the hierarchical clustering of 55,431 Homo sapiens genes based on a large-scale coexpression analysis of 3500 GTEx bulk RNA-Seq samples of healthy individuals, which were selected as the best representative samples of each tissue type. HGCA2.0 presents subclades of coexpressed genes to a gene of interest, and performs various built-in gene term enrichment analyses on the coexpressed genes, including gene ontologies, biological pathways, protein families, and diseases, while also being unique in revealing enriched transcription factors driving coexpression. HGCA2.0 has been successful in identifying not only genes with ubiquitous expression patterns, but also tissue-specific genes. Benchmarking showed that HGCA2.0 belongs to the top performing coexpression webtools, as shown by STRING analysis. HGCA2.0 creates working hypotheses for the discovery of gene partners or common biological processes that can be experimentally validated. It offers a simple and intuitive website design and user interface, as well as an API endpoint.
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Affiliation(s)
- Vasileios L. Zogopoulos
- Centre of Systems Biology, Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
- Section of Cell Biology and Biophysics, Department of Biology, National and Kapodistrian University of Athens, 15701 Athens, Greece
| | - Apostolos Malatras
- Biobank.cy Center of Excellence in Biobanking and Biomedical Research, University of Cyprus, 2029 Nicosia, Cyprus
| | - Konstantinos Kyriakidis
- Centre of Systems Biology, Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
- School of Pharmacy, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Chrysanthi Charalampous
- Centre of Basic Research, Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
| | - Evanthia A. Makrygianni
- University Research Institute of Maternal and Child Health and Precision Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Stéphanie Duguez
- Personalised Medicine Centre, School of Medicine, Ulster University, Derry-Londonderry BT47 6SB, UK
| | - Marianna A. Koutsi
- Centre of Basic Research, Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
| | - Marialena Pouliou
- Centre of Basic Research, Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
| | - Christos Vasileiou
- Centre of Systems Biology, Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
- Engineering Design and Computing Laboratory, ETH Zurich, 8092 Zurich, Switzerland
| | - William J. Duddy
- Personalised Medicine Centre, School of Medicine, Ulster University, Derry-Londonderry BT47 6SB, UK
| | - Marios Agelopoulos
- Centre of Basic Research, Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
| | - George P. Chrousos
- University Research Institute of Maternal and Child Health and Precision Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Vassiliki A. Iconomidou
- Section of Cell Biology and Biophysics, Department of Biology, National and Kapodistrian University of Athens, 15701 Athens, Greece
| | - Ioannis Michalopoulos
- Centre of Systems Biology, Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
- Correspondence:
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21
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Zhang Y, Cai Q, Luo Y, Zhang Y, Li H. Integrated top-down and bottom-up proteomics mass spectrometry for the characterization of endogenous ribosomal protein heterogeneity. J Pharm Anal 2023; 13:63-72. [PMID: 36820077 PMCID: PMC9937802 DOI: 10.1016/j.jpha.2022.11.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 11/07/2022] [Accepted: 11/08/2022] [Indexed: 11/16/2022] Open
Abstract
Ribosomes are abundant, large RNA-protein complexes that are the sites of all protein synthesis in cells. Defects in ribosomal proteins (RPs), including proteoforms arising from genetic variations, alternative splicing of RNA transcripts, post-translational modifications and alterations of protein expression level, have been linked to a diverse range of diseases, including cancer and aging. Comprehensive characterization of ribosomal proteoforms is challenging but important for the discovery of potential disease biomarkers or protein targets. In the present work, using E. coli 70S RPs as an example, we first developed a top-down proteomics approach on a Waters Synapt G2 Si mass spectrometry (MS) system, and then applied it to the HeLa 80S ribosome. The results were complemented by a bottom-up approach. In total, 50 out of 55 RPs were identified using the top-down approach. Among these, more than 30 RPs were found to have their N-terminal methionine removed. Additional modifications such as methylation, acetylation, and hydroxylation were also observed, and the modification sites were identified by bottom-up MS. In a HeLa 80S ribosomal sample, we identified 98 ribosomal proteoforms, among which multiple truncated 80S ribosomal proteoforms were observed, the type of information which is often overlooked by bottom-up experiments. Although their relevance to diseases is not yet known, the integration of top-down and bottom-up proteomics approaches paves the way for the discovery of proteoform-specific disease biomarkers or targets.
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Affiliation(s)
- Ying Zhang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Qinghua Cai
- Henan Engineering Laboratory for Mammary Bioreactor, School of Life Sciences, Henan University, Kaifeng, Henan, 475004, China
| | - Yuxiang Luo
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Yu Zhang
- The Shennong Laboratory, Zhengzhou, 450002, China
| | - Huilin Li
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
- Corresponding author. School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China.
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22
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Sasaki S, Kitaura H, Goto M, Yoshida M, Mizoguchi I. Craniofacial Characteristics and Orthodontic Treatment of Diamond Blackfan Syndrome: Two Case Reports. Cleft Palate Craniofac J 2023; 60:98-104. [PMID: 34787488 DOI: 10.1177/10556656211053774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Diamond Blackfan anemia (DBA) is a chronic congenital form of erythrocytic hypoplasia in which erythroid precursor cell levels are low. DBA reflects ribosomal dysfunction and is accompanied by hematopoietic cell apoptosis, anemia, and various somatic symptoms. We report the characteristic symptoms of the craniofacial region and the orthodontic treatments of two DBA cases. Case 1 was a 12-year-old female. The typical physical and facial characteristics of DBA were lacking. On initial examination, she exhibited a skeletal Class II jaw and end to end molar relationships and a large overjet. An edgewise appliance was placed after extraction of the first maxillary premolars. After 3 years and 11 months, an appropriate overjet and overbite, rigid intercuspation, and an acceptable profile were evident without any clinical adverse effects. Case 2 was a 13-year-old female. She exhibited a skeletal Class I jaw relationship, a spaced dental arch, the maxillofacial dysplasia characteristic of Binder syndrome, hypoplasia of the right mandibular condyle, and labial protrusions of the maxillary and mandibular incisors. We placed an edgewise appliance and after 1 year and 7 months, the occlusion was optimal in the absence of any adverse effects. Our two DBA cases exhibited a broad spectrum of physical and dentofacial symptoms. Patients with DBA are often prescribed combined steroid/bisphosphonate therapies. Both agents are likely to affect alveolar bone remodeling after tooth extraction and orthodontic tooth movement. Careful consideration of medication with reference to various dentofacial characteristics is necessary.
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Affiliation(s)
- Satoshi Sasaki
- Division of Orthodontics and Dentofacial Orthopedics, 89292Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Hideki Kitaura
- Division of Orthodontics and Dentofacial Orthopedics, 89292Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Maki Goto
- Division of Orthodontics and Dentofacial Orthopedics, 89292Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Michiko Yoshida
- Division of Orthodontics and Dentofacial Orthopedics, 89292Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Itaru Mizoguchi
- Division of Orthodontics and Dentofacial Orthopedics, 89292Tohoku University Graduate School of Dentistry, Sendai, Japan
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23
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Nakamura S, Tanimoto K, Bhawal UK. Ribosomal Stress Couples with the Hypoxia Response in Dec1-Dependent Orthodontic Tooth Movement. Int J Mol Sci 2022; 24:ijms24010618. [PMID: 36614058 PMCID: PMC9820322 DOI: 10.3390/ijms24010618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 12/13/2022] [Accepted: 12/22/2022] [Indexed: 01/01/2023] Open
Abstract
This study characterized the effects of a deficiency of the hypoxia-responsive gene, differentiated embryonic chondrocyte gene 1 (Dec1), in attenuating the biological function of orthodontic tooth movement (OTM) and examined the roles of ribosomal proteins in the hypoxic environment during OTM. HIF-1α transgenic mice and control mice were used for hypoxic regulation of periodontal ligament (PDL) fibroblasts. Dec1 knockout (Dec1KO) and wild-type (WT) littermate C57BL/6 mice were used as in vivo models of OTM. The unstimulated contralateral side served as a control. In vitro, human PDL fibroblasts were exposed to compression forces for 2, 4, 6, 24, and 48 h. HIF-1α transgenic mice had high expression levels of Dec1, HSP105, and ribosomal proteins compared to control mice. The WT OTM mice displayed increased Dec1 expression in the PDL fibroblasts. Micro-CT analysis showed slower OTM in Dec1KO mice compared to WT mice. Increased immunostaining of ribosomal proteins was observed in WT OTM mice compared to Dec1KO OTM mice. Under hypoxia, Dec1 knockdown caused a significant suppression of ribosomal protein expression in PDL fibroblasts. These results reveal that the hypoxic environment in OTM could have implications for the functions of Dec1 and ribosomal proteins to rejuvenate periodontal tissue homeostasis.
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Affiliation(s)
- Shigeru Nakamura
- Department of Public and Preventive Dentistry, Nihon University Graduate School of Dentistry at Matsudo, Chiba 271-8587, Japan
| | - Keiji Tanimoto
- Department of Translational Cancer Research, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima 734-8553, Japan
| | - Ujjal K. Bhawal
- Department of Pharmacology, Saveetha Institute of Medical and Technical Sciences, Saveetha Dental College, Chennai 600077, India
- Department of Biochemistry and Molecular Biology, Nihon University School of Dentistry at Matsudo, Chiba 271-8587, Japan
- Correspondence: ; Tel.: +81-47-360-9328
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24
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Franklin DA, Liu S, Jin A, Cui P, Guo Z, Arend KC, Moorman NJ, He S, Wang GG, Wan YY, Zhang Y. Ribosomal protein RPL11 haploinsufficiency causes anemia in mice via activation of the RP-MDM2-p53 pathway. J Biol Chem 2022; 299:102739. [PMID: 36435197 PMCID: PMC9793318 DOI: 10.1016/j.jbc.2022.102739] [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: 04/08/2022] [Revised: 10/21/2022] [Accepted: 10/22/2022] [Indexed: 11/25/2022] Open
Abstract
Recent discovery of the ribosomal protein (RP) RPL11 interacting with and inhibiting the E3 ubiquitin ligase function of MDM2 established the RP-MDM2-p53 signaling pathway, which is linked to biological events, including ribosomal biogenesis, nutrient availability, and metabolic homeostasis. Mutations in RPs lead to a diverse array of phenotypes known as ribosomopathies in which the role of p53 is implicated. Here, we generated conditional RPL11-deletion mice to investigate in vivo effects of impaired RP expression and its functional connection with p53. While deletion of one Rpl11 allele in germ cells results in embryonic lethality, deletion of one Rpl11 allele in adult mice does not affect viability but leads to acute anemia. Mechanistically, we found RPL11 haploinsufficiency activates p53 in hematopoietic tissues and impedes erythroid precursor differentiation, resulting in insufficient red blood cell development. We demonstrated that reducing p53 dosage by deleting one p53 allele rescues RPL11 haploinsufficiency-induced inhibition of erythropoietic precursor differentiation and restores normal red blood cell levels in mice. Furthermore, blocking the RP-MDM2-p53 pathway by introducing an RP-binding mutation in MDM2 prevents RPL11 haploinsufficiency-caused p53 activation and rescues the anemia in mice. Together, these findings demonstrate that the RP-MDM2-p53 pathway is a critical checkpoint for RP homeostasis and that p53-dependent cell cycle arrest of erythroid precursors is the molecular basis for the anemia phenotype commonly associated with RP deficiency.
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Affiliation(s)
- Derek A. Franklin
- Department of Radiation Oncology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA,Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA,Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Shijie Liu
- Department of Radiation Oncology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA,Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Aiwen Jin
- Department of Radiation Oncology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA,Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Pengfei Cui
- Department of Radiation Oncology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA,Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Zengli Guo
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA,Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Kyle C. Arend
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA,Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Nathaniel J. Moorman
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA,Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Shenghui He
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA,Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Gang Greg Wang
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA,Department of Biochemistry and Biophysics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Yisong Y. Wan
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA,Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Yanping Zhang
- Department of Radiation Oncology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA,Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA,Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA,For correspondence: Yanping Zhang
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25
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易 美, 万 扬, 程 思, 巩 晓, 尹 梓, 李 俊, 高 洋, 吴 超, 宗 苏, 常 丽, 陈 玉, 郑 荣, 竺 晓. [Prevalence and risk factors of obesity in children with Diamond-Blackfan anemia]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2022; 24:1143-1148. [PMID: 36305116 PMCID: PMC9627996 DOI: 10.7499/j.issn.1008-8830.2206070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 08/30/2022] [Indexed: 06/16/2023]
Abstract
OBJECTIVES To investigate the distribution of body mass index (BMI) and risk factors for obesity in children with Diamond-Blackfan Anemia (DBA). METHODS The children with DBA who attended National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, from January 2003 to December 2020 were enrolled as subjects. The related clinical data and treatment regimens were recorded. The height and weight data measured within 1 week before or after follow-up time points were collected to calculate BMI. The risk factors for obesity were determined by multivariate regression analysis in children with DBA. RESULTS A total of 129 children with DBA were enrolled, among whom there were 80 boys (62.0%) and 49 girls (38.0%), with a median age of 49 months (range 3-189 months). The prevalence rate of obesity was 14.7% (19/129). The multivariate logistic regression analysis showed that the absence of ribosomal protein gene mutation was closely associated with obesity in children with DBA (adjusted OR=3.63, 95%CI: 1.16-11.38, adjusted P=0.027). In children with glucocorticoid-dependent DBA, obesity was not associated with age of initiation of glucocorticoid therapy, duration of glucocorticoid therapy, and maintenance dose of glucocorticoids (P>0.05). CONCLUSIONS There is a high prevalence rate of obesity in children with DBA, and the absence of ribosomal protein gene mutation is closely associated with obesity in children with DBA.
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26
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Functions of block of proliferation 1 during anterior development in Xenopus laevis. PLoS One 2022; 17:e0273507. [PMID: 36007075 PMCID: PMC9409556 DOI: 10.1371/journal.pone.0273507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 08/09/2022] [Indexed: 11/19/2022] Open
Abstract
Block of proliferation 1 (Bop1) is a nucleolar protein known to be necessary for the assembly of the 60S subunit of ribosomes. Here, we show a specific bop1 expression in the developing anterior tissue of the South African clawed frog Xenopus laevis. Morpholino oligonucleotide-mediated knockdown approaches demonstrated that Bop1 is required for proper development of the cranial cartilage, brain, and the eyes. Furthermore, we show that bop1 knockdown leads to impaired retinal lamination with disorganized cell layers. Expression of neural crest-, brain-, and eye-specific marker genes was disturbed. Apoptotic and proliferative processes, which are known to be affected during ribosomal biogenesis defects, are not hindered upon bop1 knockdown. Because early Xenopus embryos contain a large store of maternal ribosomes, we considered if Bop1 might have a role independent of de novo ribosomal biogenesis. At early embryonic stages, pax6 expression was strongly reduced in bop1 morphants and synergy experiments indicate a common signaling pathway of the two molecules, Bop1 and Pax6. Our studies imply a novel function of Bop1 independent of ribosomal biogenesis.
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27
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Dokal I, Tummala H, Vulliamy T. Inherited bone marrow failure in the pediatric patient. Blood 2022; 140:556-570. [PMID: 35605178 PMCID: PMC9373017 DOI: 10.1182/blood.2020006481] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 12/17/2020] [Indexed: 12/05/2022] Open
Abstract
Inherited bone marrow (BM) failure syndromes are a diverse group of disorders characterized by BM failure, usually in association with ≥1 extrahematopoietic abnormalities. BM failure, which can involve ≥1 cell lineages, often presents in the pediatric age group. Furthermore, some children initially labeled as having idiopathic aplastic anemia or myelodysplasia represent cryptic cases of inherited BM failure. Significant advances in the genetics of these syndromes have been made, identifying more than 100 disease genes, giving insights into normal hematopoiesis and how it is disrupted in patients with BM failure. They have also provided important information on fundamental biological pathways, including DNA repair: Fanconi anemia (FA) genes; telomere maintenance: dyskeratosis congenita (DC) genes; and ribosome biogenesis: Shwachman-Diamond syndrome and Diamond-Blackfan anemia genes. In addition, because these disorders are usually associated with extrahematopoietic abnormalities and increased risk of cancer, they have provided insights into human development and cancer. In the clinic, genetic tests stemming from the recent advances facilitate diagnosis, especially when clinical features are insufficient to accurately classify a disorder. Hematopoietic stem cell transplantation using fludarabine-based protocols has significantly improved outcomes, particularly in patients with FA or DC. Management of some other complications, such as cancer, remains a challenge. Recent studies have suggested the possibility of new and potentially more efficacious therapies, including a renewed focus on hematopoietic gene therapy and drugs [transforming growth factor-β inhibitors for FA and PAPD5, a human poly(A) polymerase, inhibitors for DC] that target disease-specific defects.
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Affiliation(s)
- Inderjeet Dokal
- Centre for Genomics and Child Health, Blizard Institute, London, United Kingdom; and
- Barts and The London School of Medicine and Dentistry, Queen Mary University of London, Barts Health National Health Service (NHS) Trust, London, United Kingdom
| | - Hemanth Tummala
- Centre for Genomics and Child Health, Blizard Institute, London, United Kingdom; and
- Barts and The London School of Medicine and Dentistry, Queen Mary University of London, Barts Health National Health Service (NHS) Trust, London, United Kingdom
| | - Tom Vulliamy
- Centre for Genomics and Child Health, Blizard Institute, London, United Kingdom; and
- Barts and The London School of Medicine and Dentistry, Queen Mary University of London, Barts Health National Health Service (NHS) Trust, London, United Kingdom
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28
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Temaj G, Saha S, Dragusha S, Ejupi V, Buttari B, Profumo E, Beqa L, Saso L. Ribosomopathies and cancer: pharmacological implications. Expert Rev Clin Pharmacol 2022; 15:729-746. [PMID: 35787725 DOI: 10.1080/17512433.2022.2098110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION The ribosome is a ribonucleoprotein organelle responsible for protein synthesis, and its biogenesis is a highly coordinated process that involves many macromolecular components. Any acquired or inherited impairment in ribosome biogenesis or ribosomopathies is associated with the development of different cancers and rare genetic diseases. Interference with multiple steps of protein synthesis has been shown to promote tumor cell death. AREAS COVERED We discuss the current insights about impaired ribosome biogenesis and their secondary consequences on protein synthesis, transcriptional and translational responses, proteotoxic stress, and other metabolic pathways associated with cancer and rare diseases. Studies investigating the modulation of different therapeutic chemical entities targeting cancer in in vitro and in vivo models have also been detailed. EXPERT OPINION Despite the association between inherited mutations affecting ribosome biogenesis and cancer biology, the development of therapeutics targeting the essential cellular machinery has only started to emerge. New chemical entities should be designed to modulate different checkpoints (translating oncoproteins, dysregulation of specific ribosome-assembly machinery, ribosomal stress, and rewiring ribosomal functions). Although safe and effective therapies are lacking, consideration should also be given to using existing drugs alone or in combination for long-term safety, with known risks for feasibility in clinical trials and synergistic effects.
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Affiliation(s)
| | - Sarmistha Saha
- Department of Cardiovascular, Endocrine-metabolic Diseases, and Aging, Italian National Institute of Health, Rome, Italy
| | | | - Valon Ejupi
- College UBT, Faculty of Pharmacy, Prishtina, Kosovo
| | - Brigitta Buttari
- Department of Cardiovascular, Endocrine-metabolic Diseases, and Aging, Italian National Institute of Health, Rome, Italy
| | - Elisabetta Profumo
- Department of Cardiovascular, Endocrine-metabolic Diseases, and Aging, Italian National Institute of Health, Rome, Italy
| | - Lule Beqa
- College UBT, Faculty of Pharmacy, Prishtina, Kosovo
| | - Luciano Saso
- Department of Physiology and Pharmacology "Vittorio Erspamer", Sapienza University of Rome, Italy
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29
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Kubickova A, Maceckova Z, Vojta P, Ondra M, Volejnikova J, Koralkova P, Jungova A, Jahoda O, Mojzikova R, Hadacova I, Cermak J, Horvathova M, Pospisilova D, Hajduch M. Missense mutation in RPS7 causes Diamond-Blackfan anemia via alteration of erythrocyte metabolism, protein translation and induction of ribosomal stress. Blood Cells Mol Dis 2022; 97:102690. [DOI: 10.1016/j.bcmd.2022.102690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 06/30/2022] [Accepted: 06/30/2022] [Indexed: 11/17/2022]
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30
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Alkan F, Wilkins OG, Hernández-Pérez S, Ramalho S, Silva J, Ule J, Faller WJ. Identifying ribosome heterogeneity using ribosome profiling. Nucleic Acids Res 2022; 50:e95. [PMID: 35687114 PMCID: PMC9458444 DOI: 10.1093/nar/gkac484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 05/12/2022] [Accepted: 05/24/2022] [Indexed: 11/14/2022] Open
Abstract
Recent studies have revealed multiple mechanisms that can lead to heterogeneity in ribosomal composition. This heterogeneity can lead to preferential translation of specific panels of mRNAs, and is defined in large part by the ribosomal protein (RP) content, amongst other things. However, it is currently unknown to what extent ribosomal composition is heterogeneous across tissues, which is compounded by a lack of tools available to study it. Here we present dripARF, a method for detecting differential RP incorporation into the ribosome using Ribosome Profiling (Ribo-seq) data. We combine the 'waste' rRNA fragment data generated in Ribo-seq with the known 3D structure of the human ribosome to predict differences in the composition of ribosomes in the material being studied. We have validated this approach using publicly available data, and have revealed a potential role for eS25/RPS25 in development. Our results indicate that ribosome heterogeneity can be detected in Ribo-seq data, providing a new method to study this phenomenon. Furthermore, with dripARF, previously published Ribo-seq data provides a wealth of new information, allowing the identification of RPs of interest in many disease and normal contexts. dripARF is available as part of the ARF R package and can be accessed through https://github.com/fallerlab/ARF.
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Affiliation(s)
- Ferhat Alkan
- Division of Oncogenomics, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Oscar G Wilkins
- The Francis Crick Institute, London, UK.,UCL Queen Square Motor Neuron Disease Centre, Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology, UCL, London, UK
| | | | - Sofia Ramalho
- Division of Oncogenomics, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Joana Silva
- Division of Oncogenomics, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Jernej Ule
- The Francis Crick Institute, London, UK.,UCL Queen Square Motor Neuron Disease Centre, Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology, UCL, London, UK.,UK Dementia Research Institute Centre, King's College London, London, UK
| | - William J Faller
- Division of Oncogenomics, The Netherlands Cancer Institute, Amsterdam, The Netherlands
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31
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Network assisted analysis of de novo variants using protein-protein interaction information identified 46 candidate genes for congenital heart disease. PLoS Genet 2022; 18:e1010252. [PMID: 35671298 PMCID: PMC9205499 DOI: 10.1371/journal.pgen.1010252] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 06/17/2022] [Accepted: 05/12/2022] [Indexed: 11/19/2022] Open
Abstract
De novo variants (DNVs) with deleterious effects have proved informative in identifying risk genes for early-onset diseases such as congenital heart disease (CHD). A number of statistical methods have been proposed for family-based studies or case/control studies to identify risk genes by screening genes with more DNVs than expected by chance in Whole Exome Sequencing (WES) studies. However, the statistical power is still limited for cohorts with thousands of subjects. Under the hypothesis that connected genes in protein-protein interaction (PPI) networks are more likely to share similar disease association status, we developed a Markov Random Field model that can leverage information from publicly available PPI databases to increase power in identifying risk genes. We identified 46 candidate genes with at least 1 DNV in the CHD study cohort, including 18 known human CHD genes and 35 highly expressed genes in mouse developing heart. Our results may shed new insight on the shared protein functionality among risk genes for CHD. The topologic information in a pathway may be informative to identify functionally interrelated genes and help improve statistical power in DNV studies. Under the hypothesis that connected genes in PPI networks are more likely to share similar disease association status, we developed a novel statistical model that can leverage information from publicly available PPI databases. Through simulation studies under multiple settings, we proved our method can increase statistical power in identifying additional risk genes compared to methods without using the PPI network information. We then applied our method to a real example for CHD DNV data, and then visualized the subnetwork of candidate genes to find potential functional gene clusters for CHD.
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32
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Turning up the HEAT(R3) in Diamond-Blackfan anemia. Blood 2022; 139:3101-3102. [PMID: 35616991 DOI: 10.1182/blood.2022015881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 02/22/2022] [Indexed: 02/02/2023] Open
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33
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Hiregange DG, Rivalta A, Yonath A, Zimmerman E, Bashan A, Yonath H. Mutations in RPS19 may affect ribosome function and biogenesis in Diamond Blackfan Anemia. FEBS Open Bio 2022; 12:1419-1434. [PMID: 35583751 PMCID: PMC9249338 DOI: 10.1002/2211-5463.13444] [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: 03/29/2022] [Revised: 05/04/2022] [Accepted: 05/17/2022] [Indexed: 11/12/2022] Open
Abstract
Ribosomes, the cellular organelles translating the genetic code to proteins, are assemblies of RNA chains and many proteins (RPs) arranged in precise fine-tuned interwoven structures. Mutated ribosomal genes cause ribosomopathies, including Diamond Blackfan Anemia (DBA, a rare heterogeneous red-cell aplasia connected to ribosome malfunction) or failed biogenesis. Combined bioinformatical, structural, and predictive analyses of potential consequences of possibly expressed mutations in eS19, the protein product of the highly mutated RPS19, suggests that mutations in its exposed surface could alter its positioning during assembly and consequently prevent biogenesis, implying a natural selective strategy to avoid malfunctions in ribosome assembly. A search for RPS19 pseudogenes indicated >90% sequence identity with the wild type, hinting at its expression in cases of absent or truncated gene products.
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Affiliation(s)
| | - Andre Rivalta
- The Department of Chemical and Structural Biology, Weizmann Institute of Science, Israel
| | - Ada Yonath
- The Department of Chemical and Structural Biology, Weizmann Institute of Science, Israel
| | - Ella Zimmerman
- The Department of Chemical and Structural Biology, Weizmann Institute of Science, Israel
| | - Anat Bashan
- The Department of Chemical and Structural Biology, Weizmann Institute of Science, Israel
| | - Hagith Yonath
- Internal Medicine A and Genetics Institute Sheba Medical Center, and Sackler School of Medicine, Tel Aviv University, Israel
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34
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Matsumori H, Watanabe K, Tachiwana H, Fujita T, Ito Y, Tokunaga M, Sakata-Sogawa K, Osakada H, Haraguchi T, Awazu A, Ochiai H, Sakata Y, Ochiai K, Toki T, Ito E, Goldberg IG, Tokunaga K, Nakao M, Saitoh N. Ribosomal protein L5 facilitates rDNA-bundled condensate and nucleolar assembly. Life Sci Alliance 2022; 5:5/7/e202101045. [PMID: 35321919 PMCID: PMC8942980 DOI: 10.26508/lsa.202101045] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/01/2022] [Accepted: 03/02/2022] [Indexed: 11/24/2022] Open
Abstract
High content image analysis, single molecule tracking, modeling, and DBA patient analysis revealed that ribosomal protein L5 facilitates rDNA-bundled condensate and nucleolar assembly. The nucleolus is the site of ribosome assembly and formed through liquid–liquid phase separation. Multiple ribosomal DNA (rDNA) arrays are bundled in the nucleolus, but the underlying mechanism and significance are unknown. In the present study, we performed high-content screening followed by image profiling with the wndchrm machine learning algorithm. We revealed that cells lacking a specific 60S ribosomal protein set exhibited common nucleolar disintegration. The depletion of RPL5 (also known as uL18), the liquid–liquid phase separation facilitator, was most effective, and resulted in an enlarged and un-separated sub-nucleolar compartment. Single-molecule tracking analysis revealed less-constrained mobility of its components. rDNA arrays were also unbundled. These results were recapitulated by a coarse-grained molecular dynamics model. Transcription and processing of ribosomal RNA were repressed in these aberrant nucleoli. Consistently, the nucleoli were disordered in peripheral blood cells from a Diamond–Blackfan anemia patient harboring a heterozygous, large deletion in RPL5. Our combinatorial analyses newly define the role of RPL5 in rDNA array bundling and the biophysical properties of the nucleolus, which may contribute to the etiology of ribosomopathy.
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Affiliation(s)
- Haruka Matsumori
- Department of Medical Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan
| | - Kenji Watanabe
- Cancer Institute of Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Hiroaki Tachiwana
- Cancer Institute of Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Tomoko Fujita
- Cancer Institute of Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Yuma Ito
- School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Japan
| | - Makio Tokunaga
- School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Japan
| | - Kumiko Sakata-Sogawa
- School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Japan
| | - Hiroko Osakada
- Advanced ICT Research Institute Kobe, National Institute of Information and Communications Technology, Kobe, Japan
| | - Tokuko Haraguchi
- Advanced ICT Research Institute Kobe, National Institute of Information and Communications Technology, Kobe, Japan.,Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
| | - Akinori Awazu
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Japan.,Research Center for the Mathematics on Chromatin Live Dynamics (RcMcD), Hiroshima University, Higashi-Hiroshima, Japan
| | - Hiroshi Ochiai
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Japan
| | - Yuka Sakata
- Cancer Institute of Japanese Foundation for Cancer Research, Tokyo, Japan
| | | | - Tsutomu Toki
- Department of Pediatrics, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Etsuro Ito
- Department of Pediatrics, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Ilya G Goldberg
- Image Informatics and Computational Biology Unit, Laboratory of Genetics, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Kazuaki Tokunaga
- Department of Medical Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan
| | - Mitsuyoshi Nakao
- Department of Medical Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan
| | - Noriko Saitoh
- Cancer Institute of Japanese Foundation for Cancer Research, Tokyo, Japan
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35
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Schreiner C, Kernl B, Dietmann P, Riegger RJ, Kühl M, Kühl SJ. The Ribosomal Protein L5 Functions During Xenopus Anterior Development Through Apoptotic Pathways. Front Cell Dev Biol 2022; 10:777121. [PMID: 35281111 PMCID: PMC8905602 DOI: 10.3389/fcell.2022.777121] [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: 09/14/2021] [Accepted: 02/08/2022] [Indexed: 01/24/2023] Open
Abstract
Ribosomal biogenesis is a fundamental process necessary for cell growth and division. Ribosomal protein L5 (Rpl5) is part of the large ribosomal subunit. Mutations in this protein have been associated with the congenital disease Diamond Blackfan anemia (DBA), a so called ribosomopathy. Despite of the ubiquitous need of ribosomes, clinical manifestations of DBA include tissue-specific symptoms, e.g., craniofacial malformations, eye abnormalities, skin pigmentation failure, cardiac defects or liver cirrhosis. Here, we made use of the vertebrate model organism Xenopus laevis and showed a specific expression of rpl5 in the developing anterior tissue correlating with tissues affected in ribosomopathies. Upon Rpl5 knockdown using an antisense-based morpholino oligonucleotide approach, we showed different phenotypes affecting anterior tissue, i.e., defective cranial cartilage, malformed eyes, and microcephaly. Hence, the observed phenotypes in Xenopus laevis resemble the clinical manifestations of DBA. Analyses of the underlying molecular basis revealed that the expression of several marker genes of neural crest, eye, and brain are decreased during induction and differentiation of the respective tissue. Furthermore, Rpl5 knockdown led to decreased cell proliferation and increased cell apoptosis during early embryogenesis. Investigating the molecular mechanisms underlying Rpl5 function revealed a more than additive effect between either loss of function of Rpl5 and loss of function of c-Myc or loss of function of Rpl5 and gain of function of Tp53, suggesting a common signaling pathway of these proteins. The co-injection of the apoptosis blocking molecule Bcl2 resulted in a partial rescue of the eye phenotype, supporting the hypothesis that apoptosis is one main reason for the phenotypes occurring upon Rpl5 knockdown. With this study, we are able to shed more light on the still poorly understood molecular background of ribosomopathies.
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Affiliation(s)
- Corinna Schreiner
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany.,International Graduate School in Molecular Medicine Ulm, Ulm, Germany
| | - Bianka Kernl
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany.,International Graduate School in Molecular Medicine Ulm, Ulm, Germany
| | - Petra Dietmann
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
| | - Ricarda J Riegger
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
| | - Michael Kühl
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
| | - Susanne J Kühl
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
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36
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Morin C, Moyret-Lalle C, Mertani HC, Diaz JJ, Marcel V. Heterogeneity and dynamic of EMT through the plasticity of ribosome and mRNA translation. Biochim Biophys Acta Rev Cancer 2022; 1877:188718. [PMID: 35304296 DOI: 10.1016/j.bbcan.2022.188718] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 03/02/2022] [Accepted: 03/11/2022] [Indexed: 02/06/2023]
Abstract
Growing evidence exposes translation and its translational machinery as key players in establishing and maintaining physiological and pathological biological processes. Examining translation may not only provide new biological insight but also identify novel innovative therapeutic targets in several fields of biology, including that of epithelial-to-mesenchymal transition (EMT). EMT is currently considered as a dynamic and reversible transdifferentiation process sustaining the transition from an epithelial to mesenchymal phenotype, known to be mainly driven by transcriptional reprogramming. However, it seems that the characterization of EMT plasticity is challenging, relying exclusively on transcriptomic and epigenetic approaches. Indeed, heterogeneity in EMT programs was reported to depend on the biological context. Here, by reviewing the involvement of translational control, translational machinery and ribosome biogenesis characterizing the different types of EMT, from embryonic and adult physiological to pathological contexts, we discuss the added value of integrating translational control and its machinery to depict the heterogeneity and dynamics of EMT programs.
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Affiliation(s)
- Chloé Morin
- Inserm U1052, CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, Université de Lyon, Université Claude Bernard Lyon 1, Centre Léon Bérard, F-69373 Lyon Cedex 08, France; Institut Convergence PLAsCAN, 69373 Lyon cedex 08, France; DevWeCan Labex Laboratory, 69373 Lyon cedex 08, France
| | - Caroline Moyret-Lalle
- Inserm U1052, CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, Université de Lyon, Université Claude Bernard Lyon 1, Centre Léon Bérard, F-69373 Lyon Cedex 08, France; Institut Convergence PLAsCAN, 69373 Lyon cedex 08, France; DevWeCan Labex Laboratory, 69373 Lyon cedex 08, France
| | - Hichem C Mertani
- Inserm U1052, CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, Université de Lyon, Université Claude Bernard Lyon 1, Centre Léon Bérard, F-69373 Lyon Cedex 08, France; Institut Convergence PLAsCAN, 69373 Lyon cedex 08, France; DevWeCan Labex Laboratory, 69373 Lyon cedex 08, France
| | - Jean-Jacques Diaz
- Inserm U1052, CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, Université de Lyon, Université Claude Bernard Lyon 1, Centre Léon Bérard, F-69373 Lyon Cedex 08, France; Institut Convergence PLAsCAN, 69373 Lyon cedex 08, France; DevWeCan Labex Laboratory, 69373 Lyon cedex 08, France
| | - Virginie Marcel
- Inserm U1052, CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, Université de Lyon, Université Claude Bernard Lyon 1, Centre Léon Bérard, F-69373 Lyon Cedex 08, France; Institut Convergence PLAsCAN, 69373 Lyon cedex 08, France; DevWeCan Labex Laboratory, 69373 Lyon cedex 08, France.
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37
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HEATR3 variants impair nuclear import of uL18 (RPL5) and drive Diamond-Blackfan anemia. Blood 2022; 139:3111-3126. [PMID: 35213692 PMCID: PMC9136880 DOI: 10.1182/blood.2021011846] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 02/03/2022] [Indexed: 11/21/2022] Open
Abstract
Biallelic variants in HEATR3 are associated with DBA and other clinical features in humans. HEATR3 variants destabilize the protein, resulting in a reduction of nuclear uL18 and impaired ribosome biogenesis.
The congenital bone marrow failure syndrome Diamond-Blackfan anemia (DBA) is typically associated with variants in ribosomal protein (RP) genes impairing erythroid cell development. Here we report multiple individuals with biallelic HEATR3 variants exhibiting bone marrow failure, short stature, facial and acromelic dysmorphic features, and intellectual disability. These variants destabilize a protein whose yeast homolog is known to synchronize the nuclear import of RPs uL5 (RPL11) and uL18 (RPL5), which are both critical for producing ribosomal subunits and for stabilizing the p53 tumor suppressor when ribosome biogenesis is compromised. Expression of HEATR3 variants or repression of HEATR3 expression in primary cells, cell lines of various origins, and yeast models impairs growth, differentiation, pre–ribosomal RNA processing, and ribosomal subunit formation reminiscent of DBA models of large subunit RP gene variants. Consistent with a role of HEATR3 in RP import, HEATR3-depleted cells or patient-derived fibroblasts display reduced nuclear accumulation of uL18. Hematopoietic progenitor cells expressing HEATR3 variants or small-hairpin RNAs knocking down HEATR3 synthesis reveal abnormal acceleration of erythrocyte maturation coupled to severe proliferation defects that are independent of p53 activation. Our study uncovers a new pathophysiological mechanism leading to DBA driven by biallelic HEATR3 variants and the destabilization of a nuclear import protein important for ribosome biogenesis.
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38
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Short Stature in Patients with Diamond-Blackfan Anemia: A Cross-Sectional Study. J Pediatr 2022; 240:177-185. [PMID: 34543620 DOI: 10.1016/j.jpeds.2021.09.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 08/26/2021] [Accepted: 09/10/2021] [Indexed: 12/25/2022]
Abstract
OBJECTIVE To systematically describe the short stature of patients with Diamond-Blackfan anemia and to explore factors affecting the height development of patients with Diamond-Blackfan anemia. STUDY DESIGN This cross-sectional study was conducted at the Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, and the height, weight, and clinical data of 129 patients with Diamond-Blackfan anemia were collected from June 2020 to September 2020. RESULTS The median height-age-z score (HAZ) of children affected by Diamond-Blackfan anemia was -1.54 (-6.36-1.96). Short stature was found in 37.98% of the patients. Specific Diamond-Blackfan anemia growth curves were developed for weight, height, and body mass index, separately for male and female patients. Multivariable logistic regression models showed that female sex (aOR 4.92; 95% CI 1.29-18.71; P = .0195), underweight (aOR 10.41, 95% CI 1.41-76.98, P = .0217), cardiovascular malformations (aOR 216.65; 95% CI 3.29-14279.79; P = .0118), and RPL11(aOR 29.14; 95% CI 1.18-719.10; P = .0392) or RPS26 (aOR 53.49; 95% CI 1.40-2044.30; P = .0323) mutations were independent risk factors for short stature. In the subgroup of patients who were steroid-dependent, patients with a duration of steroid therapy over 2 years (OR 2.95; 95% CI 1.00-8.66; P = .0494) or maintenance dose of prednisone >0.1 mg/kg per day (OR 3.30; 95% CI 1.02-10.72; P = .0470) had a higher incidence of short stature. CONCLUSIONS Patients with Diamond-Blackfan anemia had a high prevalence of short stature. The risk of short stature increased with age and was associated with sex, underweight, congenital malformations, and RPL11 or RPS26 mutations. The duration of steroid therapy and maintenance dose of steroid was significantly associated with the incidence of short stature in steroid-dependent patients with Diamond-Blackfan anemia.
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Lebaron S, O’Donohue M, Smith SC, Engleman KL, Juusola J, Safina NN, Thiffault I, Saunders CJ, Gleizes P. Functionally impaired
RPL8
variants associated with Diamond‐Blackfan anemia and a Diamond‐Blackfan anemia‐like phenotype. Hum Mutat 2021; 43:389-402. [DOI: 10.1002/humu.24323] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 12/17/2021] [Accepted: 12/20/2021] [Indexed: 11/06/2022]
Affiliation(s)
- Simon Lebaron
- Molecular, Cellular and Developmental biology department (MCD), Centre de Biologie Intégrative (CBI) University of Toulouse, CNRS, UT3 Toulouse France
| | - Marie‐Françoise O’Donohue
- Molecular, Cellular and Developmental biology department (MCD), Centre de Biologie Intégrative (CBI) University of Toulouse, CNRS, UT3 Toulouse France
| | - Scott C. Smith
- Department of Pathology and Laboratory Medicine Children's Mercy Hospital Kansas City MO USA
- Current address: SUNY Upstate Medical University Syracuse NY USA
| | - Kendra L. Engleman
- Division of Clinical Genetics Children's Mercy Hospital Kansas City MO USA
- Department of Pediatrics Children’s Mercy Hospital Kansas City MO USA
| | | | - Nicole N. Safina
- Division of Clinical Genetics Children's Mercy Hospital Kansas City MO USA
- Department of Pediatrics Children’s Mercy Hospital Kansas City MO USA
- Current address: Division of Medical Genetics and Genomics, Stead Family University of Iowa Children’s Hospital, The University of Iowa Carver College of Medicine Iowa City IA USA
| | - Isabelle Thiffault
- Department of Pathology and Laboratory Medicine Children's Mercy Hospital Kansas City MO USA
- University of Missouri‐Kansas City School of Medicine Kansas City MO USA
- Center for Pediatric Genomic Medicine Children’s Mercy Hospital Kansas City MO USA
| | - Carol J. Saunders
- Department of Pathology and Laboratory Medicine Children's Mercy Hospital Kansas City MO USA
- University of Missouri‐Kansas City School of Medicine Kansas City MO USA
- Center for Pediatric Genomic Medicine Children’s Mercy Hospital Kansas City MO USA
| | - Pierre‐Emmanuel Gleizes
- Molecular, Cellular and Developmental biology department (MCD), Centre de Biologie Intégrative (CBI) University of Toulouse, CNRS, UT3 Toulouse France
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40
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Babaylova ES, Gopanenko AV, Tupikin AE, Kabilov MR, Malygin AA, Karpova GG. Deficiency of the Ribosomal Protein uL5 Leads to Significant Rearrangements of the Transcriptional and Translational Landscapes in Mammalian Cells. Int J Mol Sci 2021; 22:ijms222413485. [PMID: 34948282 PMCID: PMC8706191 DOI: 10.3390/ijms222413485] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 12/13/2021] [Accepted: 12/14/2021] [Indexed: 12/23/2022] Open
Abstract
Protein uL5 (formerly called L11) is an integral component of the large (60S) subunit of the human ribosome, and its deficiency in cells leads to the impaired biogenesis of 60S subunits. Using RNA interference, we reduced the level of uL5 in HEK293T cells by three times, which caused an almost proportional decrease in the content of the fraction corresponding to 80S ribosomes, without a noticeable diminution in the level of polysomes. By RNA sequencing of uL5-deficient and control cell samples, which were those of total mRNA and mRNA from the polysome fraction, we identified hundreds of differentially expressed genes (DEGs) at the transcriptome and translatome levels and revealed dozens of genes with altered translational efficiency (GATEs). Transcriptionally up-regulated DEGs were mainly associated with rRNA processing, pre-mRNA splicing, translation and DNA repair, while down-regulated DEGs were genes of membrane proteins; the type of regulation depended on the GC content in the 3′ untranslated regions of DEG mRNAs. The belonging of GATEs to up-regulated and down-regulated ones was determined by the coding sequence length of their mRNAs. Our findings suggest that the effects observed in uL5-deficient cells result from an insufficiency of translationally active ribosomes caused by a deficiency of 60S subunits.
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41
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Da Costa LM. Diamond-Blackfan anemia. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2021; 2021:353-360. [PMID: 34889440 PMCID: PMC8791146 DOI: 10.1182/hematology.2021000314] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Diamond-Blackfan anemia (DBA) is an inherited bone marrow failure syndrome, characterized as a rare congenital bone marrow erythroid hypoplasia (OMIM#105650). Erythroid defect in DBA results in erythroblastopenia in bone marrow as a consequence of maturation blockade between the burst forming unit-erythroid and colony forming unit-erythroid developmental stages, leading to moderate to severe usually macrocytic aregenerative (<20 × 109/L of reticulocytes) anemia. Congenital malformations localized mostly in the cephalic area and in the extremities (thumbs), as well as short stature and cardiac and urogenital tract abnormalities, are a feature of 50% of the DBA-affected patients. A significant increased risk for malignancy has been reported. DBA is due to a defect in the ribosomal RNA (rRNA) maturation as a consequence of a heterozygous mutation in 1 of the 20 ribosomal protein genes. Besides classical DBA, some DBA-like diseases have been identified. The relation between the defect in rRNA maturation and the erythroid defect in DBA has yet to be fully defined. However, recent studies have identified a role for GATA1 either due to a specific defect in its translation or due to its defective regulation by its chaperone HSP70. In addition, excess free heme-induced reactive oxygen species and apoptosis have been implicated in the DBA erythroid phenotype. Current treatment options are either regular transfusions with appropriate iron chelation or treatment with corticosteroids starting at 1 year of age. The only curative treatment for the anemia of DBA to date is bone marrow transplantation. Use of gene therapy as a therapeutic strategy is currently being explored.
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Affiliation(s)
- Lydie M. Da Costa
- Service d'Hématologie Biologique (Hematology Diagnostic Lab), AP-HP, Hôpital Robert Debré, Paris, France
- University of Paris, Paris, France
- HEMATIM EA4666, Amiens, France
- Laboratory of Excellence for Red Cells, LABEX GR-Ex, Paris, France
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42
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A new murine Rpl5 (uL18) mutation provides a unique model of variably penetrant Diamond-Blackfan anemia. Blood Adv 2021; 5:4167-4178. [PMID: 34464976 PMCID: PMC8945612 DOI: 10.1182/bloodadvances.2021004658] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 05/04/2021] [Indexed: 01/28/2023] Open
Abstract
Ribosome dysfunction is implicated in multiple abnormal developmental and disease states in humans. Heterozygous germline mutations in genes encoding ribosomal proteins are found in most individuals with Diamond-Blackfan anemia (DBA), whereas somatic mutations have been implicated in a variety of cancers and other disorders. Ribosomal protein-deficient animal models show variable phenotypes and penetrance, similar to human patients with DBA. In this study, we characterized a novel ENU mouse mutant (Skax23m1Jus) with growth and skeletal defects, cardiac malformations, and increased mortality. After genetic mapping and whole-exome sequencing, we identified an intronic Rpl5 mutation, which segregated with all affected mice. This mutation was associated with decreased ribosome generation, consistent with Rpl5 haploinsufficiency. Rpl5Skax23-Jus/+ animals had a profound delay in erythroid maturation and increased mortality at embryonic day (E) 12.5, which improved by E14.5. Surviving mutant animals had macrocytic anemia at birth, as well as evidence of ventricular septal defect (VSD). Surviving adult and aged mice exhibited no hematopoietic defect or VSD. We propose that this novel Rpl5Skax23-Jus/+ mutant mouse will be useful in studying the factors influencing the variable penetrance that is observed in DBA.
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43
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Fukui Y, Hayano S, Kawanabe N, Wang Z, Shimada A, Saito MK, Asaka I, Kamioka H. Investigation of the molecular causes underlying physical abnormalities in Diamond-Blackfan anemia patients with RPL5 haploinsufficiency. Pathol Int 2021; 71:803-813. [PMID: 34587661 DOI: 10.1111/pin.13168] [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: 04/09/2021] [Accepted: 09/12/2021] [Indexed: 01/05/2023]
Abstract
Diamond-Blackfan anemia (DBA) is a genetic disorder caused by mutations in genes encoding ribosomal proteins and characterized by erythroid aplasia and various physical abnormalities. Although accumulating evidence suggests that defective ribosome biogenesis leads to p53-mediated apoptosis in erythroid progenitor cells, little is known regarding the underlying causes of the physical abnormalities. In this study, we established induced pluripotent stem cells from a DBA patient with RPL5 haploinsufficiency. These cells retained the ability to differentiate into osteoblasts and chondrocytes. However, RPL5 haploinsufficiency impaired the production of mucins and increased apoptosis in differentiated chondrocytes. Increased expression of the pro-apoptotic genes BAX and CASP9 further indicated that RPL5 haploinsufficiency triggered p53-mediated apoptosis in chondrocytes. Murine double minute 2 (MDM2), the primary negative regulator of p53, plays a crucial role in erythroid aplasia in DBA patient. We found the phosphorylation level of MDM2 was significantly decreased in RPL5 haploinsufficient chondrocytes. In stark contrast, we found no evidence that RPL5 haploinsufficiency impaired osteogenesis. Collectively, our data support a model in which RPL5 haploinsufficiency specifically induces p53-mediated apoptosis in chondrocytes through MDM2 inhibition, which leads to physical abnormalities in DBA patients.
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Affiliation(s)
- Yuko Fukui
- Department of Orthodontics, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Satoru Hayano
- Department of Orthodontics, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan.,Department of Orthodontics, Okayama University Hospital, Okayama, Japan
| | - Noriaki Kawanabe
- Department of Orthodontics, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Ziyi Wang
- Department of Orthodontics, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan.,Research Fellow of Japan Society for the Promotion of Science, Tokyo, Japan
| | - Akira Shimada
- Department of Pediatric Hematology/Oncology, Okayama University Hospital, Okayama, Japan.,Department of Pediatrics, Jichi Medical University, Tochigi, Japan
| | - Megumu K Saito
- Department of Clinical Application, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
| | - Isao Asaka
- Department of Fundamental Cell Technology, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
| | - Hiroshi Kamioka
- Department of Orthodontics, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
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44
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Utsugisawa T, Uchiyama T, Toki T, Shimojima-Yamamoto K, Ohga S, Ito E, Kanno H. Enzymatic Changes in Red Blood Cells of Diamond-Blackfan Anemia. TOHOKU J EXP MED 2021; 255:49-55. [PMID: 34526430 DOI: 10.1620/tjem.255.49] [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] [Indexed: 11/18/2022]
Abstract
Diamond-Blackfan anemia is a congenital bone marrow failure syndrome characterized by red blood cell (RBC) aplasia with varied malformations in infants. Elevated activity of adenosine deaminase (ADA) has been considered as a useful biomarker of Diamond-Blackfan anemia, and ADA assay has been shown to be more sensitive than genetic diagnosis. Approximately, 80% of the examined patients showed elevated ADA activity, whereas genetic tests of ribosome subunit genes identified mutations in approximately 60% of the patients. We previously reported that reduced glutathione (GSH) levels in RBCs may serve as a biomarker of Diamond-Blackfan anemia. In this study, to confirm the universality of our data, we extended the analysis to seven RBC enzymes and GSH of 14 patients with Diamond-Blackfan anemia and performed a cross-analysis study using enzyme activity assay and recently reported proteome data. Statistical analysis revealed that both data exhibited high similarity, upregulation in the hexokinase and pentose-phosphate pathway, and downregulation in glycolytic enzymes such as phosphofructokinase and pyruvate kinase, in the RBCs obtained from the subjects with Diamond-Blackfan anemia. The only discrepancy between enzyme activity and proteome data was observed in glucose-6-phosphate dehydrogenase (G6PD), as increased G6PD activity showed no relation with the significant elevation in protein levels. These results suggest that our enzymatic activity data of Diamond-Blackfan anemia are universal and that the enzymatic activation of G6PD via a hitherto-unveiled mechanism is another metabolic feature of RBCs of Diamond-Blackfan anemia.
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Affiliation(s)
- Taiju Utsugisawa
- Department of Transfusion Medicine and Cell Processing, Faculty of Medicine, Tokyo Women's Medical University
| | | | - Tsutomu Toki
- Department of Pediatrics, Hirosaki University, School of Medicine
| | - Keiko Shimojima-Yamamoto
- Department of Transfusion Medicine and Cell Processing, Faculty of Medicine, Tokyo Women's Medical University.,Institute of Medical Genetics, Tokyo Women's Medical University
| | - Shouichi Ohga
- Department of Pediatrics, Kyushu University, School of Medicine
| | - Etsuro Ito
- Department of Pediatrics, Hirosaki University, School of Medicine
| | - Hitoshi Kanno
- Department of Transfusion Medicine and Cell Processing, Faculty of Medicine, Tokyo Women's Medical University.,Institute of Medical Genetics, Tokyo Women's Medical University
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45
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Iskander D, Wang G, Heuston EF, Christodoulidou C, Psaila B, Ponnusamy K, Ren H, Mokhtari Z, Robinson M, Chaidos A, Trivedi P, Trasanidis N, Katsarou A, Szydlo R, Palii CG, Zaidi MH, Al-Oqaily Q, Caputo VS, Roy A, Harrington Y, Karnik L, Naresh K, Mead AJ, Thongjuea S, Brand M, de la Fuente J, Bodine DM, Roberts I, Karadimitris A. Single-cell profiling of human bone marrow progenitors reveals mechanisms of failing erythropoiesis in Diamond-Blackfan anemia. Sci Transl Med 2021; 13:eabf0113. [PMID: 34516827 DOI: 10.1126/scitranslmed.abf0113] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Ribosome dysfunction underlies the pathogenesis of many cancers and heritable ribosomopathies. Here, we investigate how mutations in either ribosomal protein large (RPL) or ribosomal protein small (RPS) subunit genes selectively affect erythroid progenitor development and clinical phenotypes in Diamond-Blackfan anemia (DBA), a rare ribosomopathy with limited therapeutic options. Using single-cell assays of patient-derived bone marrow, we delineated two distinct cellular trajectories segregating with ribosomal protein genotypes. Almost complete loss of erythroid specification was observed in RPS-DBA. In contrast, we observed relative preservation of qualitatively abnormal erythroid progenitors and precursors in RPL-DBA. Although both DBA genotypes exhibited a proinflammatory bone marrow milieu, RPS-DBA was characterized by erythroid differentiation arrest, whereas RPL-DBA was characterized by preserved GATA1 expression and activity. Compensatory stress erythropoiesis in RPL-DBA exhibited disordered differentiation underpinned by an altered glucocorticoid molecular signature, including reduced ZFP36L2 expression, leading to milder anemia and improved corticosteroid response. This integrative analysis approach identified distinct pathways of erythroid failure and defined genotype-phenotype correlations in DBA. These findings may help facilitate therapeutic target discovery.
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Affiliation(s)
- Deena Iskander
- Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London W12 0NN, UK
| | - Guanlin Wang
- Medical Research Council (MRC) Weatherall Institute of Molecular Medicine (WIMM) Centre for Computational Biology, University of Oxford, Oxford OX3 9DS, UK
- Medical Research Council (MRC) Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, NIHR Biomedical Research Centre, University of Oxford, Oxford OX3 9DS, UK
| | - Elisabeth F Heuston
- Hematopoiesis Section, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892-442, USA
| | - Chrysi Christodoulidou
- Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London W12 0NN, UK
| | - Bethan Psaila
- Medical Research Council (MRC) Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, NIHR Biomedical Research Centre, University of Oxford, Oxford OX3 9DS, UK
| | - Kanagaraju Ponnusamy
- Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London W12 0NN, UK
| | - Hongwei Ren
- Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London W12 0NN, UK
| | - Zeinab Mokhtari
- Ottawa Hospital Research Institute, 501 Smyth Box 511, Ottawa, ON K1H 8L6, Canada
- Department of Medicine II, Würzburg University Hospital, Interdisciplinary Center for Clinical Research (IZKF), Laboratory for Experimental Stem Cell Transplantation, Würzburg, Germany
| | - Mark Robinson
- Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London W12 0NN, UK
| | - Aristeidis Chaidos
- Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London W12 0NN, UK
| | - Pritesh Trivedi
- Department of Histopathology, Imperial College Healthcare Trust, Du Cane Road, London W12 0HS, UK
| | - Nikolaos Trasanidis
- Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London W12 0NN, UK
| | - Alexia Katsarou
- Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London W12 0NN, UK
| | - Richard Szydlo
- Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London W12 0NN, UK
| | - Carmen G Palii
- Ottawa Hospital Research Institute, 501 Smyth Box 511, Ottawa, ON K1H 8L6, Canada
| | - Mehmood H Zaidi
- Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London W12 0NN, UK
| | - Qais Al-Oqaily
- Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London W12 0NN, UK
| | - Valentina S Caputo
- Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London W12 0NN, UK
- School of Applied Sciences, London South Bank University, London SE1 0AA, UK
| | - Anindita Roy
- Medical Research Council (MRC) Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, NIHR Biomedical Research Centre, University of Oxford, Oxford OX3 9DS, UK
- Department of Paediatrics, Children's Hospital, John Radcliffe, University of Oxford, Oxford OX3 9DU, UK
| | - Yvonne Harrington
- Department of Paediatrics, Imperial College Healthcare Trust, St Mary's Hospital, Praed Street, London W2 1NY, UK
| | - Leena Karnik
- Department of Paediatrics, Imperial College Healthcare Trust, St Mary's Hospital, Praed Street, London W2 1NY, UK
| | - Kikkeri Naresh
- Department of Histopathology, Imperial College Healthcare Trust, Du Cane Road, London W12 0HS, UK
| | - Adam J Mead
- Medical Research Council (MRC) Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, NIHR Biomedical Research Centre, University of Oxford, Oxford OX3 9DS, UK
| | - Supat Thongjuea
- Medical Research Council (MRC) Weatherall Institute of Molecular Medicine (WIMM) Centre for Computational Biology, University of Oxford, Oxford OX3 9DS, UK
| | - Marjorie Brand
- Ottawa Hospital Research Institute, 501 Smyth Box 511, Ottawa, ON K1H 8L6, Canada
- Department of Cellular and Molecular Medicine, University of Ottawa, 501 Smyth Road, Ottawa, ON K1H 8L6, Canada
| | - Josu de la Fuente
- Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London W12 0NN, UK
- Department of Paediatrics, Imperial College Healthcare Trust, St Mary's Hospital, Praed Street, London W2 1NY, UK
| | - David M Bodine
- Hematopoiesis Section, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892-442, USA
| | - Irene Roberts
- Medical Research Council (MRC) Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, NIHR Biomedical Research Centre, University of Oxford, Oxford OX3 9DS, UK
- Department of Paediatrics, Children's Hospital, John Radcliffe, University of Oxford, Oxford OX3 9DU, UK
| | - Anastasios Karadimitris
- Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London W12 0NN, UK
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46
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Takafuji S, Mori T, Nishimura N, Yamamoto N, Uemura S, Nozu K, Terui K, Toki T, Ito E, Muramatsu H, Takahashi Y, Matsuo M, Yamamura T, Iijima K. Usefulness of functional splicing analysis to confirm precise disease pathogenesis in Diamond-Blackfan anemia caused by intronic variants in RPS19. Pediatr Hematol Oncol 2021; 38:515-527. [PMID: 33622161 DOI: 10.1080/08880018.2021.1887984] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Diamond-Blackfan anemia (DBA) is mainly caused by pathogenic variants in ribosomal proteins and 22 responsible genes have been identified to date. The most common causative gene of DBA is RPS19 [NM_001022.4]. Nearly 180 RPS19 variants have been reported, including three deep intronic variants outside the splicing consensus sequence (c.72-92A > G, c.356 + 18G > C, and c.411 + 6G > C). We also identified one case with a c.412-3C > G intronic variant. Without conducting transcript analysis, the pathogenicity of these variants is unknown. However, it is difficult to assess transcripts because of their fragility. In such cases, in vitro functional splicing assays can be used to assess pathogenicity. Here, we report functional splicing analysis results of four RPS19 deep intronic variants identified in our case and in previously reported cases. One splicing consensus variant (c.411 + 1G > A) was also examined as a positive control. Aberrant splicing with a 2-bp insertion between exons 5 and 6 was identified in the patient samples and minigene assay results also identified exon 6 skipping in our case. The exon 6 skipping transcript was confirmed by further evaluation using quantitative RT-PCR. Additionally, minigene assay analysis of three reported deep intronic variants revealed that none of them showed aberrant splicing and that these variants were not considered to be pathogenic. In conclusion, the minigene assay is a useful method for functional splicing analysis of inherited disease.
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Affiliation(s)
- Satoru Takafuji
- Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takeshi Mori
- Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Noriyuki Nishimura
- Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Nobuyuki Yamamoto
- Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Suguru Uemura
- Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Kandai Nozu
- Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Kiminori Terui
- Department of Pediatrics, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Tsutomu Toki
- Department of Pediatrics, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Etsuro Ito
- Department of Pediatrics, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Hideki Muramatsu
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yoshiyuki Takahashi
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Masafumi Matsuo
- Locomotion Biology Research Center, Kobe Gakuin University, Kobe, Japan
| | - Tomohiko Yamamura
- Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Kazumoto Iijima
- Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe, Japan
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47
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Kang J, Brajanovski N, Chan KT, Xuan J, Pearson RB, Sanij E. Ribosomal proteins and human diseases: molecular mechanisms and targeted therapy. Signal Transduct Target Ther 2021; 6:323. [PMID: 34462428 PMCID: PMC8405630 DOI: 10.1038/s41392-021-00728-8] [Citation(s) in RCA: 125] [Impact Index Per Article: 41.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 07/12/2021] [Accepted: 07/30/2021] [Indexed: 02/07/2023] Open
Abstract
Ribosome biogenesis and protein synthesis are fundamental rate-limiting steps for cell growth and proliferation. The ribosomal proteins (RPs), comprising the structural parts of the ribosome, are essential for ribosome assembly and function. In addition to their canonical ribosomal functions, multiple RPs have extra-ribosomal functions including activation of p53-dependent or p53-independent pathways in response to stress, resulting in cell cycle arrest and apoptosis. Defects in ribosome biogenesis, translation, and the functions of individual RPs, including mutations in RPs have been linked to a diverse range of human congenital disorders termed ribosomopathies. Ribosomopathies are characterized by tissue-specific phenotypic abnormalities and higher cancer risk later in life. Recent discoveries of somatic mutations in RPs in multiple tumor types reinforce the connections between ribosomal defects and cancer. In this article, we review the most recent advances in understanding the molecular consequences of RP mutations and ribosomal defects in ribosomopathies and cancer. We particularly discuss the molecular basis of the transition from hypo- to hyper-proliferation in ribosomopathies with elevated cancer risk, a paradox termed "Dameshek's riddle." Furthermore, we review the current treatments for ribosomopathies and prospective therapies targeting ribosomal defects. We also highlight recent advances in ribosome stress-based cancer therapeutics. Importantly, insights into the mechanisms of resistance to therapies targeting ribosome biogenesis bring new perspectives into the molecular basis of cancer susceptibility in ribosomopathies and new clinical implications for cancer therapy.
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Affiliation(s)
- Jian Kang
- grid.1055.10000000403978434Division of Cancer Research, Peter MacCallum Cancer Centre, Melbourne, VIC Australia ,grid.1008.90000 0001 2179 088XSir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC Australia
| | - Natalie Brajanovski
- grid.1055.10000000403978434Division of Cancer Research, Peter MacCallum Cancer Centre, Melbourne, VIC Australia
| | - Keefe T. Chan
- grid.1055.10000000403978434Division of Cancer Research, Peter MacCallum Cancer Centre, Melbourne, VIC Australia ,grid.1008.90000 0001 2179 088XSir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC Australia
| | - Jiachen Xuan
- grid.1055.10000000403978434Division of Cancer Research, Peter MacCallum Cancer Centre, Melbourne, VIC Australia ,grid.1008.90000 0001 2179 088XSir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC Australia
| | - Richard B. Pearson
- grid.1055.10000000403978434Division of Cancer Research, Peter MacCallum Cancer Centre, Melbourne, VIC Australia ,grid.1008.90000 0001 2179 088XSir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC Australia ,grid.1002.30000 0004 1936 7857Department of Biochemistry and Molecular Biology, Monash University, Clayton, VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Biochemistry and Molecular Biology, University of Melbourne, Melbourne, VIC Australia
| | - Elaine Sanij
- grid.1055.10000000403978434Division of Cancer Research, Peter MacCallum Cancer Centre, Melbourne, VIC Australia ,grid.1008.90000 0001 2179 088XSir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Clinical Pathology, University of Melbourne, Melbourne, VIC Australia ,grid.1073.50000 0004 0626 201XSt. Vincent’s Institute of Medical Research, Fitzroy, VIC Australia
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48
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Tiu GC, Kerr CH, Forester CM, Krishnarao PS, Rosenblatt HD, Raj N, Lantz TC, Zhulyn O, Bowen ME, Shokat L, Attardi LD, Ruggero D, Barna M. A p53-dependent translational program directs tissue-selective phenotypes in a model of ribosomopathies. Dev Cell 2021; 56:2089-2102.e11. [PMID: 34242585 PMCID: PMC8319123 DOI: 10.1016/j.devcel.2021.06.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 03/26/2021] [Accepted: 06/11/2021] [Indexed: 12/13/2022]
Abstract
In ribosomopathies, perturbed expression of ribosome components leads to tissue-specific phenotypes. What accounts for such tissue-selective manifestations as a result of mutations in the ribosome, a ubiquitous cellular machine, has remained a mystery. Combining mouse genetics and in vivo ribosome profiling, we observe limb-patterning phenotypes in ribosomal protein (RP) haploinsufficient embryos, and we uncover selective translational changes of transcripts that controlling limb development. Surprisingly, both loss of p53, which is activated by RP haploinsufficiency, and augmented protein synthesis rescue these phenotypes. These findings are explained by the finding that p53 functions as a master regulator of protein synthesis, at least in part, through transcriptional activation of 4E-BP1. 4E-BP1, a key translational regulator, in turn, facilitates selective changes in the translatome downstream of p53, and this thereby explains how RP haploinsufficiency may elicit specificity to gene expression. These results provide an integrative model to help understand how in vivo tissue-specific phenotypes emerge in ribosomopathies.
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Affiliation(s)
- Gerald C Tiu
- Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Developmental Biology, Stanford University, Stanford, CA 94305, USA; Stanford Medical Scientist Training Program, Stanford University, Stanford, CA 94305, USA
| | - Craig H Kerr
- Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Developmental Biology, Stanford University, Stanford, CA 94305, USA
| | - Craig M Forester
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA 94143, USA; Division of Pediatric Allergy, Immunology and Bone Marrow Transplantation, University of California, San Francisco, San Francisco, CA 94143, USA; Children's Hospital Colorado, Division of Pediatric Hematology/Oncology/Bone Marrow Transplant, Colorado, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Pallavi S Krishnarao
- Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Developmental Biology, Stanford University, Stanford, CA 94305, USA
| | - Hannah D Rosenblatt
- Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Developmental Biology, Stanford University, Stanford, CA 94305, USA
| | - Nitin Raj
- Division of Radiation and Cancer Biology, Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Travis C Lantz
- Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Olena Zhulyn
- Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Developmental Biology, Stanford University, Stanford, CA 94305, USA
| | - Margot E Bowen
- Division of Radiation and Cancer Biology, Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Leila Shokat
- Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Developmental Biology, Stanford University, Stanford, CA 94305, USA
| | - Laura D Attardi
- Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305, USA; Division of Radiation and Cancer Biology, Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Davide Ruggero
- Department of Urology, University of California, San Francisco, San Francisco, CA 94143, USA; Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA 94143, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94143, USA.
| | - Maria Barna
- Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Developmental Biology, Stanford University, Stanford, CA 94305, USA.
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49
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Panici B, Nakajima H, Carlston CM, Ozadam H, Cenik C, Cenik ES. Loss of coordinated expression between ribosomal and mitochondrial genes revealed by comprehensive characterization of a large family with a rare Mendelian disorder. Genomics 2021; 113:1895-1905. [PMID: 33862179 PMCID: PMC8266734 DOI: 10.1016/j.ygeno.2021.04.020] [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: 01/11/2021] [Revised: 03/30/2021] [Accepted: 04/11/2021] [Indexed: 10/21/2022]
Abstract
Non-canonical intronic variants are a poorly characterized yet highly prevalent class of alterations associated with Mendelian disorders. Here, we report the first RNA expression and splicing analysis from a family whose members carry a non-canonical splice variant in an intron of RPL11 (c.396 +3A>G). This mutation is causative for Diamond Blackfan Anemia (DBA) in this family despite incomplete penetrance and variable expressivity. Our analyses revealed a complex pattern of disruptions with many novel junctions of RPL11. These include an RPL11 transcript that is translated with a late stop codon in the 3' untranslated region (3'UTR) of the main isoform. We observed that RPL11 transcript abundance is comparable among carriers regardless of symptom severity. Interestingly, both the small and large ribosomal subunit transcripts were significantly overexpressed in individuals with a history of anemia in addition to congenital abnormalities. Finally, we discovered that coordinated expression between mitochondrial components and RPL11 was lost in all carriers, which may lead to variable expressivity. Overall, this study highlights the importance of RNA splicing and expression analyses in families for molecular characterization of Mendelian diseases.
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Affiliation(s)
- Brendan Panici
- Department of Molecular Biosciences, University of Texas at Austin, Austin, USA.
| | - Hosei Nakajima
- Department of Molecular Biosciences, University of Texas at Austin, Austin, USA
| | | | - Hakan Ozadam
- Department of Molecular Biosciences, University of Texas at Austin, Austin, USA.
| | - Can Cenik
- Department of Molecular Biosciences, University of Texas at Austin, Austin, USA.
| | - Elif Sarinay Cenik
- Department of Molecular Biosciences, University of Texas at Austin, Austin, USA.
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50
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Dahl M, Warsi S, Liu Y, Debnath S, Billing M, Siva K, Flygare J, Karlsson S. Bone marrow transplantation without myeloablative conditioning in a mouse model for Diamond-Blackfan anemia corrects the disease phenotype. Exp Hematol 2021; 99:44-53.e2. [PMID: 34126174 DOI: 10.1016/j.exphem.2021.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 05/31/2021] [Accepted: 06/08/2021] [Indexed: 10/21/2022]
Abstract
Diamond-Blackfan anemia (DBA) is a congenital erythroid hypoplasia caused by a functional haploinsufficiency of genes coding for ribosomal proteins. Among these genes, the ribosomal protein S19 (RPS19) gene is the most frequently mutated. Previously, a mouse model deficient in RPS19 was developed by our laboratory, which recapitulates the hematopoietic disease phenotype by manifesting pathologic features and clinical symptoms of DBA. Characterization of this model revealed that chronic RPS19 deficiency leads to exhaustion of hematopoietic stem cells and subsequent bone marrow (BM) failure. In this study, we evaluated a nonmyeloablative conditioning protocol for BM transplants in RPS19-deficient mice by transplanting wild-type BM cells to RPS19-deficient recipients given no conditioning or sublethal doses of irradiation before transplant. We describe full correction of the hematopoietic phenotype in mice given sublethal doses of irradiation, as well as in animals completely devoid of any preceding irradiation. In comparison, wild-type animals receiving the same preconditioning regimen and number of transplanted cells exhibited significantly lower engraftment levels. Thus, robust engraftment and repopulation of transplanted cells can be achieved in reduced-intensity conditioned RPS19-deficient recipients. As gene therapy studies with autologous gene-corrected hematopoietic stem cells are emerging, we propose the results described here can guide determination of the level of conditioning for such a protocol in RPS19-deficient DBA. On the basis of our findings, a relatively mild conditioning strategy would plausibly be sufficient to achieve sufficient levels of engraftment and clinical success.
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Affiliation(s)
- Maria Dahl
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, Lund, Sweden
| | - Sarah Warsi
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, Lund, Sweden
| | - Yang Liu
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, Lund, Sweden
| | - Shubhranshu Debnath
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, Lund, Sweden
| | - Matilda Billing
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, Lund, Sweden
| | - Kavitha Siva
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, Lund, Sweden
| | - Johan Flygare
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, Lund, Sweden
| | - Stefan Karlsson
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, Lund, Sweden.
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