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Lovatel VL, Bueno AP, Kós EAAD, Meyer LGC, Ferreira GM, Kalonji MDF, Mello FVD, Milito CB, Costa ESD, Abdelhay E, Redondo MDT, Pombo-de-Oliveira MS, Fernandez TDS. A Novel Constitutional t(3;8)(p26;q21) and ANKRD26 and SRP72 Variants in a Child with Myelodysplastic Neoplasm: Clinical Implications. J Clin Med 2023; 12:jcm12093171. [PMID: 37176611 PMCID: PMC10179081 DOI: 10.3390/jcm12093171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 04/19/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023] Open
Abstract
BACKGROUND Childhood myelodysplastic neoplasm (cMDS) often raises concerns about an underlying germline predisposition, and its verification is necessary to guide therapeutic choice and allow family counseling. Here, we report a novel constitutional t(3;8)(p26;q21) in a child with MDS, inherited from the father, the ANKRD26 and SRP72 variants from the maternal origin, and the acquisition of molecular alterations during MDS evolution. CASE PRESENTATION A 4-year-old girl showed repeated infections and severe neutropenia. Bone marrow presented hypocellularity with dysplastic features. The patient had a t(3;8)(p26;q21)c identified by G-banding and FISH analysis. The family nucleus investigation identified the paternal origin of the chromosomal translocation. The NGS study identified ANKRD26 and SRP72 variants of maternal origin. CGH-array analysis detected alterations in PRSS3P2 and KANSL genes. Immunohistochemistry showed abnormal p53 expression during the MDS evolution. CONCLUSION This study shows for the first time, cytogenetic and genomic abnormalities inherited from the father and mother, respectively, and their clinical implications. It also shows the importance of investigating patients with constitutional cytogenetic alterations and/or germline variants to provide information to their family nucleus for genetic counseling and understanding of the pathogenesis of childhood MDS.
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Affiliation(s)
- Viviane Lamim Lovatel
- Cytogenetic Laboratory, Cell and Gene Therapy Program, Instituto Nacional do Câncer (INCA), Rio de Janeiro 20230-130, Brazil
| | - Ana Paula Bueno
- Instituto de Puericultura e Pediatria Martagão Gesteira, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-909, Brazil
- Pathology Department, Federal University of Rio de Janeiro, Rio de Janeiro 21941-599, Brazil
| | - Elaiza Almeida Antônio de Kós
- Cytogenetic Laboratory, Cell and Gene Therapy Program, Instituto Nacional do Câncer (INCA), Rio de Janeiro 20230-130, Brazil
| | - Laura Guimarães Corrêa Meyer
- Outpatient Department, Bone Marrow Transplantation Center, Instituto Nacional de Câncer, Rio de Janeiro 20230-130, Brazil
| | - Gerson Moura Ferreira
- Stem Cell Laboratory, Bone Marrow Transplantation Center, Instituto Nacional de Câncer, Rio de Janeiro 20230-130, Brazil
| | - Mayara de Fátima Kalonji
- Instituto de Puericultura e Pediatria Martagão Gesteira, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-909, Brazil
| | - Fabiana Vieira de Mello
- Instituto de Puericultura e Pediatria Martagão Gesteira, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-909, Brazil
| | - Cristiane Bedran Milito
- Pathology Department, Federal University of Rio de Janeiro, Rio de Janeiro 21941-599, Brazil
| | - Elaine Sobral da Costa
- Instituto de Puericultura e Pediatria Martagão Gesteira, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-909, Brazil
| | - Eliana Abdelhay
- Stem Cell Laboratory, Bone Marrow Transplantation Center, Instituto Nacional de Câncer, Rio de Janeiro 20230-130, Brazil
| | | | | | - Teresa de Souza Fernandez
- Cytogenetic Laboratory, Cell and Gene Therapy Program, Instituto Nacional do Câncer (INCA), Rio de Janeiro 20230-130, Brazil
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Kellogg MK, Tikhonova EB, Karamyshev AL. Signal Recognition Particle in Human Diseases. Front Genet 2022; 13:898083. [PMID: 35754847 PMCID: PMC9214365 DOI: 10.3389/fgene.2022.898083] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 05/05/2022] [Indexed: 01/14/2023] Open
Abstract
The signal recognition particle (SRP) is a ribonucleoprotein complex with dual functions. It co-translationally targets proteins with a signal sequence to the endoplasmic reticulum (ER) and protects their mRNA from degradation. If SRP is depleted or cannot recognize the signal sequence, then the Regulation of Aberrant Protein Production (RAPP) is activated, which results in the loss of secretory protein mRNA. If SRP recognizes the substrates but is unable to target them to ER, they may mislocalize or degrade. All these events lead to dramatic consequence for protein biogenesis, activating protein quality control pathways, and creating pressure on cell physiology, and might lead to the pathogenesis of disease. Indeed, SRP dysfunction is involved in many different human diseases, including: congenital neutropenia; idiopathic inflammatory myopathy; viral, protozoal, and prion infections; and cancer. In this work, we analyze diseases caused by SRP failure and discuss their possible molecular mechanisms.
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Affiliation(s)
- Morgana K Kellogg
- Department of Cell Biology and Biochemistry, Texas Tech University Health Sciences Center, Lubbock, TX, United States
| | - Elena B Tikhonova
- Department of Cell Biology and Biochemistry, Texas Tech University Health Sciences Center, Lubbock, TX, United States
| | - Andrey L Karamyshev
- Department of Cell Biology and Biochemistry, Texas Tech University Health Sciences Center, Lubbock, TX, United States
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Jomaa A, Eitzinger S, Zhu Z, Chandrasekar S, Kobayashi K, Shan SO, Ban N. Molecular mechanism of cargo recognition and handover by the mammalian signal recognition particle. Cell Rep 2021; 36:109350. [PMID: 34260909 PMCID: PMC8330425 DOI: 10.1016/j.celrep.2021.109350] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 04/23/2021] [Accepted: 06/15/2021] [Indexed: 11/26/2022] Open
Abstract
Co-translational protein targeting to membranes by the signal recognition particle (SRP) is a universally conserved pathway from bacteria to humans. In mammals, SRP and its receptor (SR) have many additional RNA features and protein components compared to the bacterial system, which were recently shown to play regulatory roles. Due to its complexity, the mammalian SRP targeting process is mechanistically not well understood. In particular, it is not clear how SRP recognizes translating ribosomes with exposed signal sequences and how the GTPase activity of SRP and SR is regulated. Here, we present electron cryo-microscopy structures of SRP and SRP·SR in complex with the translating ribosome. The structures reveal the specific molecular interactions between SRP and the emerging signal sequence and the elements that regulate GTPase activity of SRP·SR. Our results suggest the molecular mechanism of how eukaryote-specific elements regulate the early and late stages of SRP-dependent protein targeting. Jomaa et al. present cryo-EM structures of mammalian SRP, SRP receptor, and the translating ribosome. The structures reveal the role of eukaryotic-specific features involved in regulating early and late stages of co-translational protein targeting to the endoplasmic reticulum and suggest a model for cargo recognition and handover.
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Affiliation(s)
- Ahmad Jomaa
- Department of Biology, Institute of Molecular Biology and Biophysics, ETH Zurich, 8093 Zurich, Switzerland.
| | - Simon Eitzinger
- Department of Biology, Institute of Molecular Biology and Biophysics, ETH Zurich, 8093 Zurich, Switzerland
| | - Zikun Zhu
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Sowmya Chandrasekar
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Kan Kobayashi
- Department of Biology, Institute of Molecular Biology and Biophysics, ETH Zurich, 8093 Zurich, Switzerland
| | - Shu-Ou Shan
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, USA.
| | - Nenad Ban
- Department of Biology, Institute of Molecular Biology and Biophysics, ETH Zurich, 8093 Zurich, Switzerland.
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4
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Faoro C, Ataide SF. Noncanonical Functions and Cellular Dynamics of the Mammalian Signal Recognition Particle Components. Front Mol Biosci 2021; 8:679584. [PMID: 34113652 PMCID: PMC8185352 DOI: 10.3389/fmolb.2021.679584] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 04/29/2021] [Indexed: 12/24/2022] Open
Abstract
The signal recognition particle (SRP) is a ribonucleoprotein complex fundamental for co-translational delivery of proteins to their proper membrane localization and secretory pathways. Literature of the past two decades has suggested new roles for individual SRP components, 7SL RNA and proteins SRP9, SRP14, SRP19, SRP54, SRP68 and SRP72, outside the SRP cycle. These noncanonical functions interconnect SRP with a multitude of cellular and molecular pathways, including virus-host interactions, stress response, transcriptional regulation and modulation of apoptosis in autoimmune diseases. Uncovered novel properties of the SRP components present a new perspective for the mammalian SRP as a biological modulator of multiple cellular processes. As a consequence of these findings, SRP components have been correlated with a growing list of diseases, such as cancer progression, myopathies and bone marrow genetic diseases, suggesting a potential for development of SRP-target therapies of each individual component. For the first time, here we present the current knowledge on the SRP noncanonical functions and raise the need of a deeper understanding of the molecular interactions between SRP and accessory cellular components. We examine diseases associated with SRP components and discuss the development and feasibility of therapeutics targeting individual SRP noncanonical functions.
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Affiliation(s)
- Camilla Faoro
- School of Life and Environmental Sciences, The University of Sydney, Sydney, NSW, Australia
| | - Sandro F Ataide
- School of Life and Environmental Sciences, The University of Sydney, Sydney, NSW, Australia
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Schmaltz-Panneau B, Pagnier A, Clauin S, Buratti J, Marty C, Fenneteau O, Dieterich K, Beaupain B, Donadieu J, Plo I, Bellanné-Chantelot C. Identification of biallelic germline variants of SRP68 in a sporadic case with severe congenital neutropenia. Haematologica 2021; 106:1216-1219. [PMID: 32273475 PMCID: PMC8018125 DOI: 10.3324/haematol.2020.247825] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Indexed: 01/14/2023] Open
Affiliation(s)
- Barbara Schmaltz-Panneau
- INSERM U1287, Gustave Roussy, Villejuif, France; Paris Saclay University, U1287, Villejuif, France
| | - Anne Pagnier
- Department of Pediatric Hematology and Oncology, CHU Grenoble Alpes, Grenoble, France
| | - Séverine Clauin
- Department of Genetics, Pitié-Salpêtrière Hospital, APHP, Paris, France
| | - Julien Buratti
- Department of Genetics, Pitié-Salpêtrière Hospital, APHP, Paris, France
| | - Caroline Marty
- INSERM U1287, Gustave Roussy, Villejuif, France; Paris Saclay University, U1287, Villejuif, France
| | - Odile Fenneteau
- Laboratory of Hematology, Robert Debré Hospital - Université de Paris, France
| | - Klaus Dieterich
- Department of Medical Genetics, Univ. Grenoble Alpes, INSERM U1216, CHU Grenoble Alpes, Grenoble
| | - Blandine Beaupain
- French Registry of Chronic Neutropenia, Trousseau Hospital, Paris, France
| | - Jean Donadieu
- Department of Pediatric Hematology and Oncology, Trousseau Hospital, AP-HP, Paris, France
| | - Isabelle Plo
- INSERM U1287, Gustave Roussy, Villejuif, France; Paris Saclay University, U1287, Villejuif, France
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