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Asif M, Khayyat AIA, Alawbathani S, Abdullah U, Sanner A, Georgomanolis T, Haasters J, Becker K, Budde B, Becker C, Thiele H, Baig SM, Isidoro-García M, Winter D, Pogoda HM, Muhammad S, Hammerschmidt M, Kraft F, Kurth I, Martin HG, Wagner M, Nürnberg P, Hussain MS. Biallelic loss-of-function variants of ZFTRAF1 cause neurodevelopmental disorder with microcephaly and hypotonia. Genet Med 2024; 26:101143. [PMID: 38641995 DOI: 10.1016/j.gim.2024.101143] [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: 05/31/2023] [Revised: 04/11/2024] [Accepted: 04/11/2024] [Indexed: 04/21/2024] Open
Abstract
PURPOSE Neurodevelopmental disorders exhibit clinical and genetic heterogeneity, ergo manifest dysfunction in components of diverse cellular pathways; the precise pathomechanism for the majority remains elusive. METHODS We studied 5 affected individuals from 3 unrelated families manifesting global developmental delay, postnatal microcephaly, and hypotonia. We used exome sequencing and prioritized variants that were subsequently characterized using immunofluorescence, immunoblotting, pulldown assays, and RNA sequencing. RESULTS We identified biallelic variants in ZFTRAF1, encoding a protein of yet unknown function. Four affected individuals from 2 unrelated families segregated 2 homozygous frameshift variants in ZFTRAF1, whereas, in the third family, an intronic splice site variant was detected. We investigated ZFTRAF1 at the cellular level and signified it as a nucleocytoplasmic protein in different human cell lines. ZFTRAF1 was completely absent in the fibroblasts of 2 affected individuals. We also identified 110 interacting proteins enriched in mRNA processing and autophagy-related pathways. Based on profiling of autophagy markers, patient-derived fibroblasts show irregularities in the protein degradation process. CONCLUSION Thus, our findings suggest that biallelic variants of ZFTRAF1 cause a severe neurodevelopmental disorder.
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Affiliation(s)
- Maria Asif
- Cologne Center for Genomics (CCG), University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | | | - Salem Alawbathani
- Cologne Center for Genomics (CCG), University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany; GenAlive Lab, Riyadh, Saudi Arabia
| | - Uzma Abdullah
- University Institute of Biochemistry and Biotechnology (UIBB), PMAS-Arid Agriculture University Rawalpindi, Rawalpindi, Pakistan
| | - Anne Sanner
- Institute for Biochemistry and Molecular Biology, Medical Faculty, University of Bonn, Bonn, Germany
| | - Theodoros Georgomanolis
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Judith Haasters
- Department of Paediatric Neurology and Developmental Medicine, Dr. von Hauner Children's Hospital, LMU Hospital Munich, Ludwig-Maximilians-Universität, Munich, Germany
| | - Kerstin Becker
- Cologne Center for Genomics (CCG), University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Birgit Budde
- Cologne Center for Genomics (CCG), University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Christian Becker
- Cologne Center for Genomics (CCG), University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Holger Thiele
- Cologne Center for Genomics (CCG), University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Shahid M Baig
- Department of Biological and Biomedical Sciences, The Aga Khan University, Karachi, Pakistan; Health Services Academy (HSA), Ministry of National Health Services Regulations and Coordination (MNHSR&C), Islamabad, Pakistan
| | - María Isidoro-García
- Reference Unit for Rare Diseases DiERCyL, Clinical Biochemistry Department, University Hospital of Salamanca, Medicine Department, University of Salamanca, IBSAL, Salamanca, Spain
| | - Dominic Winter
- Institute for Biochemistry and Molecular Biology, Medical Faculty, University of Bonn, Bonn, Germany
| | - Hans-Martin Pogoda
- Institute of Zoology, Developmental Biology Unit, University of Cologne, Cologne, Germany
| | - Sajjad Muhammad
- Department of Neurosurgery, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | - Matthias Hammerschmidt
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany; Institute of Zoology, Developmental Biology Unit, University of Cologne, Cologne, Germany
| | - Florian Kraft
- Institute for Human Genetics and Genomic Medicine, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - Ingo Kurth
- Institute for Human Genetics and Genomic Medicine, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - Hilario Gomez Martin
- Departamento de Pediatría, Hospital Universitario de Salamanca, INCYL member, Salamanca, Spain
| | - Matias Wagner
- Department of Paediatric Neurology and Developmental Medicine, Dr. von Hauner Children's Hospital, LMU Hospital Munich, Ludwig-Maximilians-Universität, Munich, Germany; Institute of Human Genetics, TUM School of Medicine and Health, Technical University of Munich, Munich, Germany; Institute for Neurogenomics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Peter Nürnberg
- Cologne Center for Genomics (CCG), University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Muhammad Sajid Hussain
- Cologne Center for Genomics (CCG), University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany.
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Tolezano GC, Bastos GC, da Costa SS, Freire BL, Homma TK, Honjo RS, Yamamoto GL, Passos-Bueno MR, Koiffmann CP, Kim CA, Vianna-Morgante AM, de Lima Jorge AA, Bertola DR, Rosenberg C, Krepischi ACV. Burden of Rare Copy Number Variants in Microcephaly: A Brazilian Cohort of 185 Microcephalic Patients and Review of the Literature. J Autism Dev Disord 2024; 54:1181-1212. [PMID: 36502452 DOI: 10.1007/s10803-022-05853-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] [Accepted: 11/26/2022] [Indexed: 12/14/2022]
Abstract
Microcephaly presents heterogeneous genetic etiology linked to several neurodevelopmental disorders (NDD). Copy number variants (CNVs) are a causal mechanism of microcephaly whose investigation is a crucial step for unraveling its molecular basis. Our purpose was to investigate the burden of rare CNVs in microcephalic individuals and to review genes and CNV syndromes associated with microcephaly. We performed chromosomal microarray analysis (CMA) in 185 Brazilian patients with microcephaly and evaluated microcephalic patients carrying < 200 kb CNVs documented in the DECIPHER database. Additionally, we reviewed known genes and CNV syndromes causally linked to microcephaly through the PubMed, OMIM, DECIPHER, and ClinGen databases. Rare clinically relevant CNVs were detected in 39 out of the 185 Brazilian patients investigated by CMA (21%). In 31 among the 60 DECIPHER patients carrying < 200 kb CNVs, at least one known microcephaly gene was observed. Overall, four gene sets implicated in microcephaly were disclosed: known microcephaly genes; genes with supporting evidence of association with microcephaly; known macrocephaly genes; and novel candidates, including OTUD7A, BBC3, CNTN6, and NAA15. In the review, we compiled 957 known microcephaly genes and 58 genomic CNV loci, comprising 13 duplications and 50 deletions, which have already been associated with clinical findings including microcephaly. We reviewed genes and CNV syndromes previously associated with microcephaly, reinforced the high CMA diagnostic yield for this condition, pinpointed novel candidate loci linked to microcephaly deserving further evaluation, and provided a useful resource for future research on the field of neurodevelopment.
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Affiliation(s)
- Giovanna Cantini Tolezano
- Department of Genetics and Evolutionary Biology, Human Genome and Stem-Cell Research Center, Institute of Biosciences, University of São Paulo, 106 Rua do Matão, São Paulo, SP, 05508-090, Brazil
| | - Giovanna Civitate Bastos
- Department of Genetics and Evolutionary Biology, Human Genome and Stem-Cell Research Center, Institute of Biosciences, University of São Paulo, 106 Rua do Matão, São Paulo, SP, 05508-090, Brazil
| | - Silvia Souza da Costa
- Department of Genetics and Evolutionary Biology, Human Genome and Stem-Cell Research Center, Institute of Biosciences, University of São Paulo, 106 Rua do Matão, São Paulo, SP, 05508-090, Brazil
| | - Bruna Lucheze Freire
- Unidade de Endocrinologia Genética (LIM25), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, 455 Avenida Doutor Arnaldo, São Paulo, SP, 01246-903, Brazil
| | - Thais Kataoka Homma
- Unidade de Endocrinologia Genética (LIM25), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, 455 Avenida Doutor Arnaldo, São Paulo, SP, 01246-903, Brazil
| | - Rachel Sayuri Honjo
- Unidade de Genética do Instituto da Criança, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, 647 Avenida Doutor Enéas Carvalho de Aguiar, São Paulo, SP, 05403-900, Brazil
| | - Guilherme Lopes Yamamoto
- Department of Genetics and Evolutionary Biology, Human Genome and Stem-Cell Research Center, Institute of Biosciences, University of São Paulo, 106 Rua do Matão, São Paulo, SP, 05508-090, Brazil
- Unidade de Genética do Instituto da Criança, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, 647 Avenida Doutor Enéas Carvalho de Aguiar, São Paulo, SP, 05403-900, Brazil
| | - Maria Rita Passos-Bueno
- Department of Genetics and Evolutionary Biology, Human Genome and Stem-Cell Research Center, Institute of Biosciences, University of São Paulo, 106 Rua do Matão, São Paulo, SP, 05508-090, Brazil
| | - Celia Priszkulnik Koiffmann
- Department of Genetics and Evolutionary Biology, Human Genome and Stem-Cell Research Center, Institute of Biosciences, University of São Paulo, 106 Rua do Matão, São Paulo, SP, 05508-090, Brazil
| | - Chong Ae Kim
- Unidade de Genética do Instituto da Criança, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, 647 Avenida Doutor Enéas Carvalho de Aguiar, São Paulo, SP, 05403-900, Brazil
| | - Angela Maria Vianna-Morgante
- Department of Genetics and Evolutionary Biology, Human Genome and Stem-Cell Research Center, Institute of Biosciences, University of São Paulo, 106 Rua do Matão, São Paulo, SP, 05508-090, Brazil
| | - Alexander Augusto de Lima Jorge
- Unidade de Endocrinologia Genética (LIM25), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, 455 Avenida Doutor Arnaldo, São Paulo, SP, 01246-903, Brazil
| | - Débora Romeo Bertola
- Department of Genetics and Evolutionary Biology, Human Genome and Stem-Cell Research Center, Institute of Biosciences, University of São Paulo, 106 Rua do Matão, São Paulo, SP, 05508-090, Brazil
- Unidade de Genética do Instituto da Criança, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, 647 Avenida Doutor Enéas Carvalho de Aguiar, São Paulo, SP, 05403-900, Brazil
| | - Carla Rosenberg
- Department of Genetics and Evolutionary Biology, Human Genome and Stem-Cell Research Center, Institute of Biosciences, University of São Paulo, 106 Rua do Matão, São Paulo, SP, 05508-090, Brazil
| | - Ana Cristina Victorino Krepischi
- Department of Genetics and Evolutionary Biology, Human Genome and Stem-Cell Research Center, Institute of Biosciences, University of São Paulo, 106 Rua do Matão, São Paulo, SP, 05508-090, Brazil.
- Institute of Biosciences, University of São Paulo, 277 Rua do Matão, São Paulo, SP, 05508-090, Brazil.
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Farcy S, Hachour H, Bahi-Buisson N, Passemard S. Genetic Primary Microcephalies: When Centrosome Dysfunction Dictates Brain and Body Size. Cells 2023; 12:1807. [PMID: 37443841 PMCID: PMC10340463 DOI: 10.3390/cells12131807] [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: 04/06/2023] [Revised: 06/04/2023] [Accepted: 06/13/2023] [Indexed: 07/15/2023] Open
Abstract
Primary microcephalies (PMs) are defects in brain growth that are detectable at or before birth and are responsible for neurodevelopmental disorders. Most are caused by biallelic or, more rarely, dominant mutations in one of the likely hundreds of genes encoding PM proteins, i.e., ubiquitous centrosome or microtubule-associated proteins required for the division of neural progenitor cells in the embryonic brain. Here, we provide an overview of the different types of PMs, i.e., isolated PMs with or without malformations of cortical development and PMs associated with short stature (microcephalic dwarfism) or sensorineural disorders. We present an overview of the genetic, developmental, neurological, and cognitive aspects characterizing the most representative PMs. The analysis of phenotypic similarities and differences among patients has led scientists to elucidate the roles of these PM proteins in humans. Phenotypic similarities indicate possible redundant functions of a few of these proteins, such as ASPM and WDR62, which play roles only in determining brain size and structure. However, the protein pericentrin (PCNT) is equally required for determining brain and body size. Other PM proteins perform both functions, albeit to different degrees. Finally, by comparing phenotypes, we considered the interrelationships among these proteins.
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Affiliation(s)
- Sarah Farcy
- UMR144, Institut Curie, 75005 Paris, France;
- Inserm UMR-S 1163, Institut Imagine, 75015 Paris, France
| | - Hassina Hachour
- Service de Neurologie Pédiatrique, DMU INOV-RDB, APHP, Hôpital Robert Debré, 75019 Paris, France;
| | - Nadia Bahi-Buisson
- Service de Neurologie Pédiatrique, DMU MICADO, APHP, Hôpital Necker Enfants Malades, 75015 Paris, France;
- Université Paris Cité, Inserm UMR-S 1163, Institut Imagine, 75015 Paris, France
| | - Sandrine Passemard
- Service de Neurologie Pédiatrique, DMU INOV-RDB, APHP, Hôpital Robert Debré, 75019 Paris, France;
- Université Paris Cité, Inserm UMR 1141, NeuroDiderot, 75019 Paris, France
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Iegiani G, Ferraro A, Pallavicini G, Di Cunto F. The impact of TP53 activation and apoptosis in primary hereditary microcephaly. Front Neurosci 2023; 17:1220010. [PMID: 37457016 PMCID: PMC10338886 DOI: 10.3389/fnins.2023.1220010] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 06/12/2023] [Indexed: 07/18/2023] Open
Abstract
Autosomal recessive primary microcephaly (MCPH) is a constellation of disorders that share significant brain size reduction and mild to moderate intellectual disability, which may be accompanied by a large variety of more invalidating clinical signs. Extensive neural progenitor cells (NPC) proliferation and differentiation are essential to determine brain final size. Accordingly, the 30 MCPH loci mapped so far (MCPH1-MCPH30) encode for proteins involved in microtubule and spindle organization, centriole biogenesis, nuclear envelope, DNA replication and repair, underscoring that a wide variety of cellular processes is required for sustaining NPC expansion during development. Current models propose that altered balance between symmetric and asymmetric division, as well as premature differentiation, are the main mechanisms leading to MCPH. Although studies of cellular alterations in microcephaly models have constantly shown the co-existence of high DNA damage and apoptosis levels, these mechanisms are less considered as primary factors. In this review we highlight how the molecular and cellular events produced by mutation of the majority of MCPH genes may converge on apoptotic death of NPCs and neurons, via TP53 activation. We propose that these mechanisms should be more carefully considered in the alterations of the sophisticated equilibrium between proliferation, differentiation and death produced by MCPH gene mutations. In consideration of the potential druggability of cell apoptotic pathways, a better understanding of their role in MCPH may significantly facilitate the development of translational approaches.
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Affiliation(s)
- Giorgia Iegiani
- Department of Neuroscience ‘Rita Levi Montalcini’, University of Turin, Turin, Italy
- Neuroscience Institute Cavalieri Ottolenghi, Turin, Italy
| | - Alessia Ferraro
- Department of Neuroscience ‘Rita Levi Montalcini’, University of Turin, Turin, Italy
- Neuroscience Institute Cavalieri Ottolenghi, Turin, Italy
| | - Gianmarco Pallavicini
- Department of Neuroscience ‘Rita Levi Montalcini’, University of Turin, Turin, Italy
- Neuroscience Institute Cavalieri Ottolenghi, Turin, Italy
| | - Ferdinando Di Cunto
- Department of Neuroscience ‘Rita Levi Montalcini’, University of Turin, Turin, Italy
- Neuroscience Institute Cavalieri Ottolenghi, Turin, Italy
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Asif M, Abdullah U, Nürnberg P, Tinschert S, Hussain MS. Congenital Microcephaly: A Debate on Diagnostic Challenges and Etiological Paradigm of the Shift from Isolated/Non-Syndromic to Syndromic Microcephaly. Cells 2023; 12:cells12040642. [PMID: 36831309 PMCID: PMC9954724 DOI: 10.3390/cells12040642] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 02/13/2023] [Accepted: 02/14/2023] [Indexed: 02/19/2023] Open
Abstract
Congenital microcephaly (CM) exhibits broad clinical and genetic heterogeneity and is thus categorized into several subtypes. However, the recent bloom of disease-gene discoveries has revealed more overlaps than differences in the underlying genetic architecture for these clinical sub-categories, complicating the differential diagnosis. Moreover, the mechanism of the paradigm shift from a brain-restricted to a multi-organ phenotype is only vaguely understood. This review article highlights the critical factors considered while defining CM subtypes. It also presents possible arguments on long-standing questions of the brain-specific nature of CM caused by a dysfunction of the ubiquitously expressed proteins. We argue that brain-specific splicing events and organ-restricted protein expression may contribute in part to disparate clinical manifestations. We also highlight the role of genetic modifiers and de novo variants in the multi-organ phenotype of CM and emphasize their consideration in molecular characterization. This review thus attempts to expand our understanding of the phenotypic and etiological variability in CM and invites the development of more comprehensive guidelines.
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Affiliation(s)
- Maria Asif
- Cologne Center for Genomics (CCG), Faculty of Medicine, University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine, University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Uzma Abdullah
- University Institute of Biochemistry and Biotechnology (UIBB), PMAS-Arid Agriculture University, Rawalpindi, Rawalpindi 46300, Pakistan
| | - Peter Nürnberg
- Cologne Center for Genomics (CCG), Faculty of Medicine, University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine, University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Sigrid Tinschert
- Zentrum Medizinische Genetik, Medizinische Universität, 6020 Innsbruck, Austria
| | - Muhammad Sajid Hussain
- Cologne Center for Genomics (CCG), Faculty of Medicine, University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine, University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
- Correspondence:
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MicroRNA-377: A therapeutic and diagnostic tumor marker. Int J Biol Macromol 2023; 226:1226-1235. [PMID: 36442575 DOI: 10.1016/j.ijbiomac.2022.11.236] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/15/2022] [Accepted: 11/18/2022] [Indexed: 11/26/2022]
Abstract
Cancer is considered as one of the main causes of human deaths globally. Despite the recent progresses in therapeutic modalities, there is still a high rate of mortality among cancer patients. Late diagnosis in advanced tumor stages is one of the main reasons for treatment failure in cancer patients. Therefore, it is required to suggest the novel strategies for the early tumor detection. MicroRNAs (miRNAs) have critical roles in neoplastic transformation by regulation of cell proliferation, migration, and apoptosis. They are always considered as non-invasive markers due to their high stability in body fluids. Since, all of the miRNAs have tissue-specific functions in different tumors as tumor suppressor or oncogene; it is required to investigate the molecular mechanisms of every miRNA in different tumors to introduce that as a suitable non-invasive diagnostic marker in cancer patients. For the first time in the present review, we discussed the role of miR-377 during tumor progression. It has been reported that miR-377 mainly functions as a tumor suppressor through the regulation of signaling pathways and transcription factors. This review is an important step toward introducing the miR-377 as a novel diagnostic marker as well as a therapeutic target in cancer patients.
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Hussain S, Nawaz A, Hamid M, Ullah W, Khan IN, Afshan M, Rehman A, Nawaz H, Halswick J, Rehman SU, Ahmad S, Muzammal M, Muhammad N, Jan A, Khan S, Windpassinger C, Khan MA. Mutation screening of multiple Pakistani MCPH families revealed novel and recurrent protein-truncating mutations of ASPM. Biotechnol Appl Biochem 2022; 69:2296-2303. [PMID: 34826358 DOI: 10.1002/bab.2286] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 11/11/2021] [Indexed: 12/27/2022]
Abstract
Autosomal primary microcephaly (MCPH) is a heterogenetic disorder that affects brain's cerebral cortex size and leads to a reduction in the cranial vault. Along with the hallmark feature of reduced head circumference, microcephalic patients also exhibit a variable degree of intellectual disability as well. Genetic studies have reported 28 MCPH genes, most of which produce microtubule-associated proteins and are involved in cell division. Herein this study, 14 patients from seven Pashtun origin Pakistani families of primary microcephaly were analyzed. Mutation analysis was performed through targeted Sanger DNA sequencing on the basis of phenotype-linked genetic makeup. Genetic analysis in one family found a novel pathogenic DNA change in the abnormal spindle microtubule assembly (ASPM) gene (NM_018136.4:c.3871dupGA), while the rest of the families revealed recurrent nonsense mutation c.3978G>A (p.Trp1326*) in the same gene. The novel reported frameshift insertion presumably truncates the protein p.(Lys1291Glyfs*14) and deletes the N-terminus domains. Identification of novel ASPM-truncating mutation expands the mutational spectrum of the ASPM gene, while mapping of recurrent mutation c.3978G>A (p.Trp1326*) will aid in establishing its founder effect in the Khyber Pakhtunkhwa (KPK) inhabitant population of Pakistan and should be suggestively screened for premarital counseling of MCPH susceptible families. Most of the recruited families are related to first-degree consanguinity. Hence, all the family elders were counseled to avoid intrafamilial marriages.
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Affiliation(s)
- Sadam Hussain
- Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology, Kohat, Khyber Pakhtunkhwa, Pakistan
| | - Amjad Nawaz
- Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology, Kohat, Khyber Pakhtunkhwa, Pakistan
| | - Malaika Hamid
- Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology, Kohat, Khyber Pakhtunkhwa, Pakistan
| | - Waseem Ullah
- Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology, Kohat, Khyber Pakhtunkhwa, Pakistan
| | - Iqbal Nawaz Khan
- Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology, Kohat, Khyber Pakhtunkhwa, Pakistan
| | - Mehak Afshan
- Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology, Kohat, Khyber Pakhtunkhwa, Pakistan
| | - Adil Rehman
- Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology, Kohat, Khyber Pakhtunkhwa, Pakistan
| | - Hamid Nawaz
- Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology, Kohat, Khyber Pakhtunkhwa, Pakistan
| | - Julia Halswick
- Diagnostic and Research Institute of Human Genetics, Medical University of Graz, Graz, Austria
| | - Shoaib-Ur Rehman
- Department of Biotechnology, University of Science and Technology Bannu, Bannu, Khyber Pakhtunkhwa, Pakistan
| | - Sohail Ahmad
- Gomal Centre of Biochemistry and Biotechnology, Gomal University, D. I. Khan, Khyber Pakhtunkhwa, Pakistan
| | - Muhammad Muzammal
- Gomal Centre of Biochemistry and Biotechnology, Gomal University, D. I. Khan, Khyber Pakhtunkhwa, Pakistan
| | - Noor Muhammad
- Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology, Kohat, Khyber Pakhtunkhwa, Pakistan
| | - Abid Jan
- Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology, Kohat, Khyber Pakhtunkhwa, Pakistan
| | - Saadullah Khan
- Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology, Kohat, Khyber Pakhtunkhwa, Pakistan
| | - Christian Windpassinger
- Diagnostic and Research Institute of Human Genetics, Medical University of Graz, Graz, Austria
| | - Muzammil Ahmad Khan
- Gomal Centre of Biochemistry and Biotechnology, Gomal University, D. I. Khan, Khyber Pakhtunkhwa, Pakistan
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A kinase-independent function of cyclin-dependent kinase 6 promotes outer radial glia expansion and neocortical folding. Proc Natl Acad Sci U S A 2022; 119:e2206147119. [PMID: 36095192 PMCID: PMC9499540 DOI: 10.1073/pnas.2206147119] [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: 11/18/2022] Open
Abstract
The neocortex, the center for higher brain function, first emerged in mammals and has become massively expanded and folded in humans, constituting almost half the volume of the human brain. Primary microcephaly, a developmental disorder in which the brain is smaller than normal at birth, results mainly from there being fewer neurons in the neocortex because of defects in neural progenitor cells (NPCs). Outer radial glia (oRGs), NPCs that are abundant in gyrencephalic species but rare in lissencephalic species, are thought to play key roles in the expansion and folding of the neocortex. However, how oRGs expand, whether they are necessary for neocortical folding, and whether defects in oRGs cause microcephaly remain important questions in the study of brain development, evolution, and disease. Here, we show that oRG expansion in mice, ferrets, and human cerebral organoids requires cyclin-dependent kinase 6 (CDK6), the mutation of which causes primary microcephaly via an unknown mechanism. In a mouse model in which increased Hedgehog signaling expands oRGs and intermediate progenitor cells and induces neocortical folding, CDK6 loss selectively decreased oRGs and abolished neocortical folding. Remarkably, this function of CDK6 in oRG expansion did not require its kinase activity, was not shared by the highly similar CDK4 and CDK2, and was disrupted by the mutation causing microcephaly. Therefore, our results indicate that CDK6 is conserved to promote oRG expansion, that oRGs are necessary for neocortical folding, and that defects in oRG expansion may cause primary microcephaly.
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Kumar A, Kumar D, Jose J, Giri R, Mysorekar IU. Drugs to limit Zika virus infection and implication for maternal-fetal health. FRONTIERS IN VIROLOGY 2022; 2. [PMID: 37064602 PMCID: PMC10104533 DOI: 10.3389/fviro.2022.928599] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Although the placenta has robust defense mechanisms that protect the fetus from a viral infection, some viruses can manipulate or evade these mechanisms and disrupt physiology or cross the placental barrier. It is well established that the Zika virus is capable of vertical transmission from mother to fetus and can cause malformation of the fetal central nervous system (i.e., microcephaly), as well as Guillain-Barre syndrome in adults. This review seeks to gather and assess the contributions of translational research associated with Zika virus infection, including maternal-fetal vertical transmission of the virus. Nearly 200 inhibitors that have been evaluated in vivo and/or in vitro for their therapeutic properties against the Zika virus are summarized in this review. We also review the status of current vaccine candidates. Our main objective is to provide clinically relevant information that can guide future research directions and strategies for optimized treatment and preventive care of infections caused by Zika virus or similar pathogens.
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Affiliation(s)
- Ankur Kumar
- Department of Medicine, Section of Infectious Diseases, Baylor College of Medicine, Houston, TX, United States
- School of Basic Sciences, Indian Institute of Technology Mandi, VPO-Kamand, Mandi, India
| | - Deepak Kumar
- Department of Medicine, Section of Infectious Diseases, Baylor College of Medicine, Houston, TX, United States
| | - Joyce Jose
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, PA, State College, United States
| | - Rajanish Giri
- School of Basic Sciences, Indian Institute of Technology Mandi, VPO-Kamand, Mandi, India
| | - Indira U. Mysorekar
- Department of Medicine, Section of Infectious Diseases, Baylor College of Medicine, Houston, TX, United States
- Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, TX, United States
- CORRESPONDENCE Indira U. Mysorekar,
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10
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Primary microcephaly families mapped with different microcephalic genes by using whole exome sequencing; Insilco 3D Model's prediction of STIL, CENPJ, and CEP135 protein. GENE REPORTS 2022. [DOI: 10.1016/j.genrep.2022.101557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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11
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Halperin D, Agam N, Hallak M, Feinstein M, Drabkin M, Yogev Y, Wormser O, Shavit E, Gradstein L, Shelef I, Mijalovsky A, Flusser H, Birk OS. A syndrome of severe intellectual disability, hypotonia, failure to thrive, dysmorphism, and thinning of corpus callosum maps to chromosome 7q21.13-q21.3. Clin Genet 2022; 102:123-129. [PMID: 35443069 PMCID: PMC9545274 DOI: 10.1111/cge.14143] [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: 12/27/2021] [Revised: 04/13/2022] [Accepted: 04/16/2022] [Indexed: 11/28/2022]
Abstract
Six individuals of consanguineous Bedouin kindred presented at infancy with an autosomal recessive syndrome of severe global developmental delay, positive pyramidal signs, unique dysmorphism, skeletal abnormalities, and severe failure to thrive with normal birth weights. Patients had a profound intellectual disability and cognitive impairment with almost no acquired developmental milestones by 12 months. Early‐onset axial hypotonia evolved with progressive muscle weakness, reduced muscle tone, and hyporeflexia. Craniofacial dysmorphism consisted of a triangular face with a prominent forehead and midface hypoplasia. Magnetic resonance imaging (MRI) demonstrated thinning of the corpus callosum and paucity of white matter. Genome‐wide linkage analysis identified a single ~4 Mbp disease‐associated locus on chromosome 7q21.13‐q21.3 (LOD score>5). Whole‐exome and genome sequencing identified no nonsynonymous pathogenic biallelic variants in any of the genes within this locus. Following the exclusion of partially resembling syndromes, we now describe a novel autosomal recessive syndrome mapped to a ~4Mbp locus on chromosome 7.
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Affiliation(s)
- Daniel Halperin
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Nadav Agam
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Maher Hallak
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Miora Feinstein
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Max Drabkin
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Yuval Yogev
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Ohad Wormser
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Eitan Shavit
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Libe Gradstein
- Department of Ophthalmology, Soroka University Medical Center and Clalit Health Services, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Ilan Shelef
- Department of Imaging, Soroka University Medical Center, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Aanalia Mijalovsky
- Zusman Child Development Center, Division of Pediatrics, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Hagit Flusser
- Zusman Child Development Center, Division of Pediatrics, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Ohad S Birk
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel.,Genetics Institute, Soroka University Medical Center, Beer-Sheva, Israel
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12
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Khan SA, Khan S, Muhammad N, Rehman ZU, Khan MA, Nasir A, Kalsoom UE, Khan AK, Khan H, Wasif N. The First Report of a Missense Variant in RFX2 Causing Non-Syndromic Tooth Agenesis in a Consanguineous Pakistani Family. Front Genet 2022; 12:782653. [PMID: 35145545 PMCID: PMC8822170 DOI: 10.3389/fgene.2021.782653] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 12/07/2021] [Indexed: 11/13/2022] Open
Abstract
Background: The syndromic and non-syndromic congenital missing teeth phenotype is termed tooth agenesis. Since tooth agenesis is a heterogeneous disorder hence, the patients show diverse absent teeth phenotypes. Thus identifying novel genes involved in the morphogenesis of ectodermal appendages, including teeth, paves the way for establishing signaling pathways.Methods and Results: We have recruited an autosomal recessive non-syndromic tooth agenesis family with two affected members. The exome sequencing technology identified a novel missense sequence variant c.1421T > C; p.(Ile474Thr) in a regulatory factor X (RFX) family member (RFX2, OMIM: 142,765). During the data analysis eight rare variants on various chromosomal locations were identified, but the co-segregation analysis using Sanger sequencing confirmed the segregation of only two variants RFX2: c.1421T > C; p.(Ile474Thr), DOHH: c.109C > G; p.(Pro37Ala) lying in a common 7.1 MB region of homozygosity on chromosome 19p13.3. Furthermore, the online protein prediction algorithms and protein modeling analysis verified the RFX2 variant as a damaging genetic alteration and ACMG pathogenicity criteria classified it as likely pathogenic. On the other hand, the DOHH variant showed benign outcomes.Conclusion:RFX2 regulates the Hedgehog and fibroblast growth factor signaling pathways, which are involved in the epithelial and mesenchymal interactions during tooth development. Prior animal model studies have confirmed the expression of rfx2 at a developmental stage governing mouth formation. Moreover, its regulatory role and close association with ciliary and non-ciliary genes causing various dental malformations makes it a potential candidate gene for tooth agenesis phenotype. Further studies will contribute to exploring the direct role of RFX2 in human tooth development.
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Affiliation(s)
- Sher Alam Khan
- Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology (KUST), Kohat, Pakistan
| | - Saadullah Khan
- Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology (KUST), Kohat, Pakistan
- *Correspondence: Saadullah Khan, ; Naveed Wasif,
| | - Noor Muhammad
- Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology (KUST), Kohat, Pakistan
| | - Zia Ur Rehman
- Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology (KUST), Kohat, Pakistan
| | - Muhammad Adnan Khan
- Dental Material, Institute of Basic Medical Sciences, Khyber Medical University Peshawar, Peshawar, Pakistan
| | - Abdul Nasir
- Department of Molecular Science and Technology, Ajou University, Suwon, South Korea
| | - Umm-e- Kalsoom
- Department of Biochemistry, Hazara University, Mansehra, Pakistan
| | - Anwar Kamal Khan
- Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology (KUST), Kohat, Pakistan
| | - Hassan Khan
- Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology (KUST), Kohat, Pakistan
| | - Naveed Wasif
- Institute of Human Genetics, University of Ulm, Ulm, Germany
- Institute of Human Genetics, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
- *Correspondence: Saadullah Khan, ; Naveed Wasif,
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13
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Zaqout S, Kaindl AM. Autosomal Recessive Primary Microcephaly: Not Just a Small Brain. Front Cell Dev Biol 2022; 9:784700. [PMID: 35111754 PMCID: PMC8802810 DOI: 10.3389/fcell.2021.784700] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 12/01/2021] [Indexed: 02/06/2023] Open
Abstract
Microcephaly or reduced head circumference results from a multitude of abnormal developmental processes affecting brain growth and/or leading to brain atrophy. Autosomal recessive primary microcephaly (MCPH) is the prototype of isolated primary (congenital) microcephaly, affecting predominantly the cerebral cortex. For MCPH, an accelerating number of mutated genes emerge annually, and they are involved in crucial steps of neurogenesis. In this review article, we provide a deeper look into the microcephalic MCPH brain. We explore cytoarchitecture focusing on the cerebral cortex and discuss diverse processes occurring at the level of neural progenitors, early generated and mature neurons, and glial cells. We aim to thereby give an overview of current knowledge in MCPH phenotype and normal brain growth.
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Affiliation(s)
- Sami Zaqout
- Department of Basic Medical Sciences, College of Medicine, QU Health, Qatar University, Doha, Qatar
- Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, Doha, Qatar
| | - Angela M. Kaindl
- Institute of Cell and Neurobiology, Charité—Universitätsmedizin Berlin, Berlin, Germany
- Center for Chronically Sick Children (Sozialpädiatrisches Zentrum, SPZ), Charité—Universitätsmedizin Berlin, Berlin, Germany
- Department of Pediatric Neurology, Charité—Universitätsmedizin Berlin, Berlin, Germany
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14
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Kristofova M, Ori A, Wang ZQ. Multifaceted Microcephaly-Related Gene MCPH1. Cells 2022; 11:cells11020275. [PMID: 35053391 PMCID: PMC8774270 DOI: 10.3390/cells11020275] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 01/11/2022] [Accepted: 01/12/2022] [Indexed: 12/19/2022] Open
Abstract
MCPH1, or BRIT1, is often mutated in human primary microcephaly type 1, a neurodevelopmental disorder characterized by a smaller brain size at birth, due to its dysfunction in regulating the proliferation and self-renewal of neuroprogenitor cells. In the last 20 years or so, genetic and cellular studies have identified MCPH1 as a multifaceted protein in various cellular functions, including DNA damage signaling and repair, the regulation of chromosome condensation, cell-cycle progression, centrosome activity and the metabolism. Yet, genetic and animal model studies have revealed an unpredicted essential function of MPCH1 in gonad development and tumorigenesis, although the underlying mechanism remains elusive. These studies have begun to shed light on the role of MPCH1 in controlling various pathobiological processes of the disorder. Here, we summarize the biological functions of MCPH1, and lessons learnt from cellular and mouse models of MCPH1.
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Affiliation(s)
- Martina Kristofova
- Leibniz Institute on Aging—Fritz Lipmann Institute (FLI), Beutenbergstrasse 11, 07745 Jena, Germany; (M.K.); (A.O.)
| | - Alessandro Ori
- Leibniz Institute on Aging—Fritz Lipmann Institute (FLI), Beutenbergstrasse 11, 07745 Jena, Germany; (M.K.); (A.O.)
| | - Zhao-Qi Wang
- Leibniz Institute on Aging—Fritz Lipmann Institute (FLI), Beutenbergstrasse 11, 07745 Jena, Germany; (M.K.); (A.O.)
- Faculty of Biological Sciences, Friedrich-Schiller University of Jena, Bachstrasse 18k, 07743 Jena, Germany
- Correspondence: ; Tel.: +49-3641-656415; Fax: +49-3641-656335
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15
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Nawaz MS, Einarsson G, Bustamante M, Gisladottir RS, Walters GB, Jonsdottir GA, Skuladottir AT, Bjornsdottir G, Magnusson SH, Asbjornsdottir B, Unnsteinsdottir U, Sigurdsson E, Jonsson PV, Palmadottir VK, Gudjonsson SA, Halldorsson GH, Ferkingstad E, Jonsdottir I, Thorleifsson G, Holm H, Thorsteinsdottir U, Sulem P, Gudbjartsson DF, Stefansson H, Thorgeirsson TE, Ulfarsson MO, Stefansson K. Thirty novel sequence variants impacting human intracranial volume. Brain Commun 2022; 4:fcac271. [PMID: 36415660 PMCID: PMC9677475 DOI: 10.1093/braincomms/fcac271] [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: 04/13/2022] [Revised: 06/16/2022] [Accepted: 10/20/2022] [Indexed: 11/14/2022] Open
Abstract
Intracranial volume, measured through magnetic resonance imaging and/or estimated from head circumference, is heritable and correlates with cognitive traits and several neurological disorders. We performed a genome-wide association study meta-analysis of intracranial volume (n = 79 174) and found 64 associating sequence variants explaining 5.0% of its variance. We used coding variation, transcript and protein levels, to uncover 12 genes likely mediating the effect of these variants, including GLI3 and CDK6 that affect cranial synostosis and microcephaly, respectively. Intracranial volume correlates genetically with volumes of cortical and sub-cortical regions, cognition, learning, neonatal and neurological traits. Parkinson's disease cases have greater and attention deficit hyperactivity disorder cases smaller intracranial volume than controls. Our Mendelian randomization studies indicate that intracranial volume associated variants either increase the risk of Parkinson's disease and decrease the risk of attention deficit hyperactivity disorder and neuroticism or correlate closely with a confounder.
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Affiliation(s)
- Muhammad Sulaman Nawaz
- deCODE genetics/Amgen Inc., Sturlugata 8, 102 Reykjavik, Iceland.,Faculty of Medicine, School of Health Sciences, University of Iceland, Vatnsmyrarvegur 16, 101 Reykjavik, Iceland
| | | | | | - Rosa S Gisladottir
- deCODE genetics/Amgen Inc., Sturlugata 8, 102 Reykjavik, Iceland.,School of Humanities, University of Iceland, Saemundargata 2, 102 Reykjavik, Iceland
| | - G Bragi Walters
- deCODE genetics/Amgen Inc., Sturlugata 8, 102 Reykjavik, Iceland.,Faculty of Medicine, School of Health Sciences, University of Iceland, Vatnsmyrarvegur 16, 101 Reykjavik, Iceland
| | | | | | | | | | | | | | - Engilbert Sigurdsson
- Faculty of Medicine, School of Health Sciences, University of Iceland, Vatnsmyrarvegur 16, 101 Reykjavik, Iceland.,Department of Psychiatry, Landspitali-National University Hospital, Hringbraut 101, 101 Reykjavik, Iceland
| | - Palmi V Jonsson
- Faculty of Medicine, School of Health Sciences, University of Iceland, Vatnsmyrarvegur 16, 101 Reykjavik, Iceland.,Department of Geriatric Medicine, Landspitali University Hospital, Hringbraut 101, 101 Reykjavik, Iceland
| | - Vala Kolbrun Palmadottir
- Department of Internal Medicine, Landspitali University Hospital, Hringbraut 101, 101 Reykjavik, Iceland
| | | | - Gisli H Halldorsson
- deCODE genetics/Amgen Inc., Sturlugata 8, 102 Reykjavik, Iceland.,School of Engineering and Natural Sciences, University of Iceland, Taeknigardur, Dunhagi 5, 107 Reykjavik, Iceland
| | - Egil Ferkingstad
- deCODE genetics/Amgen Inc., Sturlugata 8, 102 Reykjavik, Iceland
| | | | | | - Hilma Holm
- deCODE genetics/Amgen Inc., Sturlugata 8, 102 Reykjavik, Iceland
| | | | - Patrick Sulem
- deCODE genetics/Amgen Inc., Sturlugata 8, 102 Reykjavik, Iceland
| | | | | | | | - Magnus O Ulfarsson
- deCODE genetics/Amgen Inc., Sturlugata 8, 102 Reykjavik, Iceland.,Faculty of Electrical and Computer Engineering, University of Iceland, Taeknigardur, Dunhagi 5, 107 Reykjavik, Iceland
| | - Kari Stefansson
- deCODE genetics/Amgen Inc., Sturlugata 8, 102 Reykjavik, Iceland.,Faculty of Medicine, School of Health Sciences, University of Iceland, Vatnsmyrarvegur 16, 101 Reykjavik, Iceland
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16
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Abstract
In this review, Phan et al. discuss the different models that have been proposed to explain how centrosome dysfunction impairs cortical development, and review the evidence supporting a unified model in which centrosome defects reduce cell proliferation in the developing cortex by prolonging mitosis and activating a mitotic surveillance pathway. Last, they also extend their discussion to centrosome-independent microcephaly mutations, such as those involved in DNA replication and repair Primary microcephaly is a brain growth disorder characterized by a severe reduction of brain size and thinning of the cerebral cortex. Many primary microcephaly mutations occur in genes that encode centrosome proteins, highlighting an important role for centrosomes in cortical development. Centrosomes are microtubule organizing centers that participate in several processes, including controlling polarity, catalyzing spindle assembly in mitosis, and building primary cilia. Understanding which of these processes are altered and how these disruptions contribute to microcephaly pathogenesis is a central unresolved question. In this review, we revisit the different models that have been proposed to explain how centrosome dysfunction impairs cortical development. We review the evidence supporting a unified model in which centrosome defects reduce cell proliferation in the developing cortex by prolonging mitosis and activating a mitotic surveillance pathway. Finally, we also extend our discussion to centrosome-independent microcephaly mutations, such as those involved in DNA replication and repair.
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17
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Wu L, Zhang R, Lin S, Lin M, Wang J. Silencing CDK6-AS1 inhibits LPS-induced inflammatory damage in HK-2 cells. Open Med (Wars) 2021; 16:1256-1264. [PMID: 34514170 PMCID: PMC8395588 DOI: 10.1515/med-2021-0314] [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: 01/26/2021] [Revised: 06/06/2021] [Accepted: 06/09/2021] [Indexed: 11/15/2022] Open
Abstract
In this study, we aim to discover the importance of long non-coding RNA cyclin-dependent kinase 6 (CDK6)-AS1 in lipopolysaccharide (LPS)-induced HK-2 cells. We treated the HK-2 cells with LPS and knocked down CDK6-AS1 in HK-2 cells and then analyzed the effects of CDK6-AS1 on the viability of cell, cell apoptosis, the expression of cytokines via MTT, flow cytometry, enzyme-linked immunosorbent assay (ELISA), and qPCR. The results showed that silencing CDK6-AS1 alleviated LPS-induced inhibition of HK-2 cell proliferation, release of IL-1β, IL-8, IL-6, and TNF-α, cell apoptosis, and decrease in mitochondrial membrane potential. In addition, decreasing the level of CDK6-AS1 inhibited the reduction of Bcl-2 levels, the expression of Bax, cleaved caspade-9, and cleaved caspase-3, induced by LPS. In conclusion, lowering CDK6-AS1 level alleviates LPS-induced inflammatory damage in HK-2 cells.
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Affiliation(s)
- Ling Wu
- Department of Pediatrics, Fujian Maternity and Child Health Hospital, Fuzhou 350001, Fujian, China
| | - Rui Zhang
- Department of Pediatrics, Fujian Maternity and Child Health Hospital, Fuzhou 350001, Fujian, China
| | - Sheng Lin
- Department of Pediatrics, Fujian Maternity and Child Health Hospital, Fuzhou 350001, Fujian, China
| | - Min Lin
- Pediatric Intensive Care Unit, Fujian Maternity and Child Health Hospital, Fuzhou 350001, Fujian, China
| | - Jing Wang
- Department of Nosocomial Infection Management, Fujian Maternity and Child Health Hospital, No. 18 Daoshan Road, Gulou District, Fuzhou 350001, Fujian, China
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18
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Batool T, Irshad S, Mahmood K. Novel Pathogenic Mutation Mapping of ASPM Gene in Consanguineous Pakistani Families with Primary Microcephaly. BRAZ J BIOL 2021; 83:e246040. [PMID: 34378666 DOI: 10.1590/1519-6984.246040] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Accepted: 01/12/2021] [Indexed: 11/21/2022] Open
Abstract
Autosomal recessive primary microcephaly (MCPH) is a neurodevelopmental disorder characterized by a congenitally reduced head circumference (-3 to -5 SD) and non-progressive intellectual disability. The objective of the study was to evaluate pathogenic mutations in the ASPM gene to understand etiology and molecular mechanism of primary microcephaly. Blood samples were collected from various families across different remote areas of Pakistan from February 2017 to May 2019 who were identified to be affected with primary microcephaly. DNA extraction was performed using the salting-out method; the quality and quantity of DNA were evaluated using spectrophotometry and 1% agarose gel electrophoresis, respectively in University of the Punjab. Mutation analysis was performed by whole exome sequencing from the Cologne Center for Genomics, University of Cologne. Sanger sequencing was done in University of the Punjab to confirm the pathogenic nature of mutation. A novel 4-bp deletion mutation c.3877_3880delGAGA was detected in exon 17 of the ASPM gene in two primary microcephaly affected families (A and B), which resulted in a frame shift mutation in the gene followed by truncated protein synthesis (p.Glu1293Lysfs*10), as well as the loss of the calmodulin-binding IQ domain and the Armadillo-like domain in the ASPM protein. Using the in-silico tools Mutation Taster, PROVEAN, and PolyPhen, the pathogenic effect of this novel mutation was tested; it was predicted to be "disease causing," with high pathogenicity scores. One previously reported mutation in exon 24 (c.9730C>T) of the ASPM gene resulting in protein truncation (p.Arg3244*) was also observed in family C. Mutations in the ASPM gene are the most common cause of MCPH in most cases. Therefore, enrolling additional affected families from remote areas of Pakistan would help in identifying or mapping novel mutations in the ASPM gene of primary microcephaly.
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Affiliation(s)
- T Batool
- University of the Punjab, School of Biochemistry and Biotechnology - SBB, Lahore, Pakistan
| | - S Irshad
- University of the Punjab, School of Biochemistry and Biotechnology - SBB, Lahore, Pakistan
| | - K Mahmood
- University of the Punjab, Department of Technology Education - IER, Lahore, Pakistan
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19
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Guerreiro A, De Sousa F, Liaudet N, Ivanova D, Eskat A, Meraldi P. WDR62 localizes katanin at spindle poles to ensure synchronous chromosome segregation. J Cell Biol 2021; 220:212394. [PMID: 34137788 PMCID: PMC8240857 DOI: 10.1083/jcb.202007171] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 04/12/2021] [Accepted: 05/18/2021] [Indexed: 12/13/2022] Open
Abstract
Mutations in the WDR62 gene cause primary microcephaly, a pathological condition often associated with defective cell division that results in severe brain developmental defects. The precise function and localization of WDR62 within the mitotic spindle is, however, still under debate, as it has been proposed to act either at centrosomes or on the mitotic spindle. Here we explored the cellular functions of WDR62 in human epithelial cell lines using both short-term siRNA protein depletions and long-term CRISPR/Cas9 gene knockouts. We demonstrate that WDR62 localizes at spindle poles, promoting the recruitment of the microtubule-severing enzyme katanin. Depletion or loss of WDR62 stabilizes spindle microtubules due to insufficient microtubule minus-end depolymerization but does not affect plus-end microtubule dynamics. During chromosome segregation, WDR62 and katanin promote efficient poleward microtubule flux and favor the synchronicity of poleward movements in anaphase to prevent lagging chromosomes. We speculate that these lagging chromosomes might be linked to developmental defects in primary microcephaly.
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Affiliation(s)
- Amanda Guerreiro
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Filipe De Sousa
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, Geneva, Switzerland.,Radiation Oncology Division, Geneva University Hospitals, Geneva, Switzerland
| | - Nicolas Liaudet
- Bioimaging Facility, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Daria Ivanova
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Anja Eskat
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Patrick Meraldi
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, Geneva, Switzerland.,Translational Research Centre in Onco-hematology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
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20
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Makhdoom EUH, Waseem SS, Iqbal M, Abdullah U, Hussain G, Asif M, Budde B, Höhne W, Tinschert S, Saadi SM, Yousaf H, Ali Z, Fatima A, Kaygusuz E, Khan A, Jameel M, Khan S, Tariq M, Anjum I, Altmüller J, Thiele H, Höning S, Baig SM, Nürnberg P, Hussain MS. Modifier Genes in Microcephaly: A Report on WDR62, CEP63, RAD50 and PCNT Variants Exacerbating Disease Caused by Biallelic Mutations of ASPM and CENPJ. Genes (Basel) 2021; 12:731. [PMID: 34068194 PMCID: PMC8153008 DOI: 10.3390/genes12050731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 05/09/2021] [Accepted: 05/11/2021] [Indexed: 11/09/2022] Open
Abstract
Congenital microcephaly is the clinical presentation of significantly reduced head circumference at birth. It manifests as both non-syndromic-microcephaly primary hereditary (MCPH)-and syndromic forms and shows considerable inter- and intrafamilial variability. It has been hypothesized that additional genetic variants may be responsible for this variability, but data are sparse. We have conducted deep phenotyping and genotyping of five Pakistani multiplex families with either MCPH (n = 3) or Seckel syndrome (n = 2). In addition to homozygous causal variants in ASPM or CENPJ, we discovered additional heterozygous modifier variants in WDR62, CEP63, RAD50 and PCNT-genes already known to be associated with neurological disorders. MCPH patients carrying an additional heterozygous modifier variant showed more severe phenotypic features. Likewise, the phenotype of Seckel syndrome caused by a novel CENPJ variant was aggravated to microcephalic osteodysplastic primordial dwarfism type II (MOPDII) in conjunction with an additional PCNT variant. We show that the CENPJ missense variant impairs splicing and decreases protein expression. We also observed centrosome amplification errors in patient cells, which were twofold higher in MOPDII as compared to Seckel cells. Taken together, these observations advocate for consideration of additional variants in related genes for their role in modifying the expressivity of the phenotype and need to be considered in genetic counseling and risk assessment.
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Affiliation(s)
- Ehtisham Ul Haq Makhdoom
- Cologne Center for Genomics (CCG), Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany; (E.U.H.M.); (S.S.W.); (M.I.); (M.A.); (B.B.); (W.H.); (J.A.); (H.T.); (P.N.)
- Human Molecular Genetics Laboratory, Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE) College, PIEAS, Faisalabad 38000, Pakistan; (S.M.S.); (H.Y.); (A.K.); (M.J.); (S.K.); (M.T.); (S.M.B.)
- Neurochemicalbiology and Genetics Laboratory (NGL), Department of Physiology, Faculty of Life Sciences, Government College University, Faisalabad 38000, Pakistan;
| | - Syeda Seema Waseem
- Cologne Center for Genomics (CCG), Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany; (E.U.H.M.); (S.S.W.); (M.I.); (M.A.); (B.B.); (W.H.); (J.A.); (H.T.); (P.N.)
- Institute of Biochemistry I, Medical Faculty, University of Cologne, 50931 Cologne, Germany;
| | - Maria Iqbal
- Cologne Center for Genomics (CCG), Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany; (E.U.H.M.); (S.S.W.); (M.I.); (M.A.); (B.B.); (W.H.); (J.A.); (H.T.); (P.N.)
- Human Molecular Genetics Laboratory, Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE) College, PIEAS, Faisalabad 38000, Pakistan; (S.M.S.); (H.Y.); (A.K.); (M.J.); (S.K.); (M.T.); (S.M.B.)
- Institute of Biochemistry I, Medical Faculty, University of Cologne, 50931 Cologne, Germany;
| | - Uzma Abdullah
- University Institute of Biochemistry and Biotechnology (UIBB), PMAS-Arid Agriculture University, Rawalpindi 46000, Pakistan;
| | - Ghulam Hussain
- Neurochemicalbiology and Genetics Laboratory (NGL), Department of Physiology, Faculty of Life Sciences, Government College University, Faisalabad 38000, Pakistan;
| | - Maria Asif
- Cologne Center for Genomics (CCG), Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany; (E.U.H.M.); (S.S.W.); (M.I.); (M.A.); (B.B.); (W.H.); (J.A.); (H.T.); (P.N.)
- Institute of Biochemistry I, Medical Faculty, University of Cologne, 50931 Cologne, Germany;
| | - Birgit Budde
- Cologne Center for Genomics (CCG), Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany; (E.U.H.M.); (S.S.W.); (M.I.); (M.A.); (B.B.); (W.H.); (J.A.); (H.T.); (P.N.)
| | - Wolfgang Höhne
- Cologne Center for Genomics (CCG), Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany; (E.U.H.M.); (S.S.W.); (M.I.); (M.A.); (B.B.); (W.H.); (J.A.); (H.T.); (P.N.)
| | - Sigrid Tinschert
- Zentrum Medizinische Genetik, Medizinische Universität, 6020 Innsbruck, Austria;
| | - Saadia Maryam Saadi
- Human Molecular Genetics Laboratory, Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE) College, PIEAS, Faisalabad 38000, Pakistan; (S.M.S.); (H.Y.); (A.K.); (M.J.); (S.K.); (M.T.); (S.M.B.)
| | - Hammad Yousaf
- Human Molecular Genetics Laboratory, Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE) College, PIEAS, Faisalabad 38000, Pakistan; (S.M.S.); (H.Y.); (A.K.); (M.J.); (S.K.); (M.T.); (S.M.B.)
| | - Zafar Ali
- Centre for Biotechnology and Microbiology, University of Swat, Swat 19130, Pakistan;
| | - Ambrin Fatima
- Department of Biological and Biomedical Sciences, Aga Khan University, Karachi 74000, Pakistan;
| | - Emrah Kaygusuz
- Bilecik Şeyh Edebali University, Molecular Biology and Genetics, Gülümbe Campus, Bilecik 11230, Turkey;
| | - Ayaz Khan
- Human Molecular Genetics Laboratory, Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE) College, PIEAS, Faisalabad 38000, Pakistan; (S.M.S.); (H.Y.); (A.K.); (M.J.); (S.K.); (M.T.); (S.M.B.)
| | - Muhammad Jameel
- Human Molecular Genetics Laboratory, Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE) College, PIEAS, Faisalabad 38000, Pakistan; (S.M.S.); (H.Y.); (A.K.); (M.J.); (S.K.); (M.T.); (S.M.B.)
| | - Sheraz Khan
- Human Molecular Genetics Laboratory, Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE) College, PIEAS, Faisalabad 38000, Pakistan; (S.M.S.); (H.Y.); (A.K.); (M.J.); (S.K.); (M.T.); (S.M.B.)
| | - Muhammad Tariq
- Human Molecular Genetics Laboratory, Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE) College, PIEAS, Faisalabad 38000, Pakistan; (S.M.S.); (H.Y.); (A.K.); (M.J.); (S.K.); (M.T.); (S.M.B.)
| | - Iram Anjum
- Department of Biotechnology, Kinnaird College for Women, Lahore 54000, Pakistan;
| | - Janine Altmüller
- Cologne Center for Genomics (CCG), Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany; (E.U.H.M.); (S.S.W.); (M.I.); (M.A.); (B.B.); (W.H.); (J.A.); (H.T.); (P.N.)
| | - Holger Thiele
- Cologne Center for Genomics (CCG), Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany; (E.U.H.M.); (S.S.W.); (M.I.); (M.A.); (B.B.); (W.H.); (J.A.); (H.T.); (P.N.)
| | - Stefan Höning
- Institute of Biochemistry I, Medical Faculty, University of Cologne, 50931 Cologne, Germany;
| | - Shahid Mahmood Baig
- Human Molecular Genetics Laboratory, Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE) College, PIEAS, Faisalabad 38000, Pakistan; (S.M.S.); (H.Y.); (A.K.); (M.J.); (S.K.); (M.T.); (S.M.B.)
- Department of Biological and Biomedical Sciences, Aga Khan University, Karachi 74000, Pakistan;
- Pakistan Science Foundation (PSF), 1- Constitution Avenue, G-5/2, Islamabad 44000, Pakistan
| | - Peter Nürnberg
- Cologne Center for Genomics (CCG), Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany; (E.U.H.M.); (S.S.W.); (M.I.); (M.A.); (B.B.); (W.H.); (J.A.); (H.T.); (P.N.)
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Faculty of Medicine and University Hospital Cologne, 50931 Cologne, Germany
| | - Muhammad Sajid Hussain
- Cologne Center for Genomics (CCG), Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany; (E.U.H.M.); (S.S.W.); (M.I.); (M.A.); (B.B.); (W.H.); (J.A.); (H.T.); (P.N.)
- Institute of Biochemistry I, Medical Faculty, University of Cologne, 50931 Cologne, Germany;
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Faculty of Medicine and University Hospital Cologne, 50931 Cologne, Germany
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Pervaiz N, Kang H, Bao Y, Abbasi AA. Molecular evolutionary analysis of human primary microcephaly genes. BMC Ecol Evol 2021; 21:76. [PMID: 33941077 PMCID: PMC8091745 DOI: 10.1186/s12862-021-01801-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 04/22/2021] [Indexed: 12/05/2022] Open
Abstract
Background There has been a rapid increase in the brain size relative to body size during mammalian evolutionary history. In particular, the enlarged and globular brain is the most distinctive anatomical feature of modern humans that set us apart from other extinct and extant primate species. Genetic basis of large brain size in modern humans has largely remained enigmatic. Genes associated with the pathological reduction of brain size (primary microcephaly-MCPH) have the characteristics and functions to be considered ideal candidates to unravel the genetic basis of evolutionary enlargement of human brain size. For instance, the brain size of microcephaly patients is similar to the brain size of Pan troglodyte and the very early hominids like the Sahelanthropus tchadensis and Australopithecus afarensis. Results The present study investigates the molecular evolutionary history of subset of autosomal recessive primary microcephaly (MCPH) genes; CEP135, ZNF335, PHC1, SASS6, CDK6, MFSD2A, CIT, and KIF14 across 48 mammalian species. Codon based substitutions site analysis indicated that ZNF335, SASS6, CIT, and KIF14 have experienced positive selection in eutherian evolutionary history. Estimation of divergent selection pressure revealed that almost all of the MCPH genes analyzed in the present study have maintained their functions throughout the history of placental mammals. Contrary to our expectations, human-specific adoptive evolution was not detected for any of the MCPH genes analyzed in the present study. Conclusion Based on these data it can be inferred that protein-coding sequence of MCPH genes might not be the sole determinant of increase in relative brain size during primate evolutionary history. Supplementary Information The online version contains supplementary material available at 10.1186/s12862-021-01801-0.
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Affiliation(s)
- Nashaiman Pervaiz
- National Center for Bioinformatics, Program of Comparative and Evolutionary Genomics, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Hongen Kang
- China National Center for Bioinformation and National Genomics Data Center, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Yiming Bao
- China National Center for Bioinformation and National Genomics Data Center, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, 100101, China.
| | - Amir Ali Abbasi
- National Center for Bioinformatics, Program of Comparative and Evolutionary Genomics, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan.
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22
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Siskos N, Stylianopoulou E, Skavdis G, Grigoriou ME. Molecular Genetics of Microcephaly Primary Hereditary: An Overview. Brain Sci 2021; 11:brainsci11050581. [PMID: 33946187 PMCID: PMC8145766 DOI: 10.3390/brainsci11050581] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/26/2021] [Accepted: 04/27/2021] [Indexed: 11/16/2022] Open
Abstract
MicroCephaly Primary Hereditary (MCPH) is a rare congenital neurodevelopmental disorder characterized by a significant reduction of the occipitofrontal head circumference and mild to moderate mental disability. Patients have small brains, though with overall normal architecture; therefore, studying MCPH can reveal not only the pathological mechanisms leading to this condition, but also the mechanisms operating during normal development. MCPH is genetically heterogeneous, with 27 genes listed so far in the Online Mendelian Inheritance in Man (OMIM) database. In this review, we discuss the role of MCPH proteins and delineate the molecular mechanisms and common pathways in which they participate.
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23
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Łukasik P, Załuski M, Gutowska I. Cyclin-Dependent Kinases (CDK) and Their Role in Diseases Development-Review. Int J Mol Sci 2021; 22:ijms22062935. [PMID: 33805800 PMCID: PMC7998717 DOI: 10.3390/ijms22062935] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/07/2021] [Accepted: 03/09/2021] [Indexed: 12/13/2022] Open
Abstract
Cyclin-dependent kinases (CDKs) are involved in many crucial processes, such as cell cycle and transcription, as well as communication, metabolism, and apoptosis. The kinases are organized in a pathway to ensure that, during cell division, each cell accurately replicates its DNA, and ensure its segregation equally between the two daughter cells. Deregulation of any of the stages of the cell cycle or transcription leads to apoptosis but, if uncorrected, can result in a series of diseases, such as cancer, neurodegenerative diseases (Alzheimer’s or Parkinson’s disease), and stroke. This review presents the current state of knowledge about the characteristics of cyclin-dependent kinases as potential pharmacological targets.
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Affiliation(s)
- Paweł Łukasik
- Department of Medical Chemistry, Pomeranian Medical University in Szczecin, Powstancow Wlkp. 72 Av., 70-111 Szczecin, Poland;
| | - Michał Załuski
- Department of Pharmaceutical Chemistry, Pomeranian Medical University in Szczecin, Powstancow Wlkp. 72 Av., 70-111 Szczecin, Poland;
| | - Izabela Gutowska
- Department of Medical Chemistry, Pomeranian Medical University in Szczecin, Powstancow Wlkp. 72 Av., 70-111 Szczecin, Poland;
- Correspondence:
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24
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Novel Homozygous Mutations in the Genes TGM1, SULT2B1, SPINK5 and FLG in Four Families Underlying Congenital Ichthyosis. Genes (Basel) 2021; 12:genes12030373. [PMID: 33807935 PMCID: PMC7999895 DOI: 10.3390/genes12030373] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 02/24/2021] [Accepted: 02/26/2021] [Indexed: 02/07/2023] Open
Abstract
Background: Ichthyoses are a large group of hereditary cornification disorders, which are both clinically and etiologically heterogeneous and affect mostly all the skin surface of the patients. Ichthyosis has its origin in an ancient Greek word “ichthys” meaning fish, this is because the ichthyosis patients have dry, thickened, and scaly skin. There is an excess accumulation of epidermal cells resulting in the appearance of continuous and widespread scales on the body. There are many varieties of ichthyosis with a broad spectrum of intensity, severity, and associated symptoms, most of them are extremely rare. Ichthyosis vulgaris is the most frequently occurring type of ichthyoses. Method: The present study consists of four Pakistani ichthyosis families (A, B, C, and D). Whole exome sequencing (WES) approach was used to identify the pathogenic sequence variants in probands. The segregation of these variants in other participants was confirmed by Sanger sequencing. Results: Total four variants including, two splice site (TGM1: c.2088 + 1G > A) and (SPINK5: c.882 + 1G > T), a missense (SULT2B1: c.419C > T; p. Ala140Val), and a nonsense (FLG: c.6109C > T; p. Arg2037Ter) variant were identified in families A, C, B, and D, respectively, as causative mutations responsible for ichthyosis in these families. Conclusion: Our study unravels the molecular etiology of the four Pakistani ichthyosis families and validates the involvement of TGM1, SULT2B1, SPINK5, and FLG, in the etiology of different forms of ichthyosis. In addition, this study also aims to give a detailed clinical report of the studied ichthyosis families.
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25
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Jean F, Stuart A, Tarailo-Graovac M. Dissecting the Genetic and Etiological Causes of Primary Microcephaly. Front Neurol 2020; 11:570830. [PMID: 33178111 PMCID: PMC7593518 DOI: 10.3389/fneur.2020.570830] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 09/09/2020] [Indexed: 12/20/2022] Open
Abstract
Autosomal recessive primary microcephaly (MCPH; “small head syndrome”) is a rare, heterogeneous disease arising from the decreased production of neurons during brain development. As of August 2020, the Online Mendelian Inheritance in Man (OMIM) database lists 25 genes (involved in molecular processes such as centriole biogenesis, microtubule dynamics, spindle positioning, DNA repair, transcriptional regulation, Wnt signaling, and cell cycle checkpoints) that are implicated in causing MCPH. Many of these 25 genes were only discovered in the last 10 years following advances in exome and genome sequencing that have improved our ability to identify disease-causing variants. Despite these advances, many patients still lack a genetic diagnosis. This demonstrates a need to understand in greater detail the molecular mechanisms and genetics underlying MCPH. Here, we briefly review the molecular functions of each MCPH gene and how their loss disrupts the neurogenesis program, ultimately demonstrating that microcephaly arises from cell cycle dysregulation. We also explore the current issues in the genetic basis and clinical presentation of MCPH as additional avenues of improving gene/variant prioritization. Ultimately, we illustrate that the detailed exploration of the etiology and inheritance of MCPH improves the predictive power in identifying previously unknown MCPH candidates and diagnosing microcephalic patients.
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Affiliation(s)
- Francesca Jean
- Department of Biochemistry and Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.,Department of Medical Genetics, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.,Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada
| | - Amanda Stuart
- Department of Biochemistry and Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.,Department of Medical Genetics, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.,Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada
| | - Maja Tarailo-Graovac
- Department of Biochemistry and Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.,Department of Medical Genetics, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.,Alberta Children's Hospital Research Institute, University of Calgary, Calgary, AB, Canada
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26
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Batool T, Irshad S, Mahmood K. WITHDRAWN: Novel pathogenic mutation mapping of ASPM gene in consanguineous Pakistani families with primary microcephaly. GENE REPORTS 2020. [DOI: 10.1016/j.genrep.2020.100945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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27
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Colas P. Cyclin-dependent kinases and rare developmental disorders. Orphanet J Rare Dis 2020; 15:203. [PMID: 32762766 PMCID: PMC7410148 DOI: 10.1186/s13023-020-01472-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 07/21/2020] [Indexed: 12/15/2022] Open
Abstract
Extensive studies in the past 30 years have established that cyclin-dependent kinases (CDKs) exert many diverse, important functions in a number of molecular and cellular processes that are at play during development. Not surprisingly, mutations affecting CDKs or their activating cyclin subunits have been involved in a variety of rare human developmental disorders. These recent findings are reviewed herein, giving a particular attention to the discovered mutations and their demonstrated or hypothesized functional consequences, which can account for pathological human phenotypes. The review highlights novel, important CDK or cyclin functions that were unveiled by their association with human disorders, and it discusses the shortcomings of mouse models to reveal some of these functions. It explains how human genetics can be used in combination with proteome-scale interaction databases to loom regulatory networks around CDKs and cyclins. Finally, it advocates the use of these networks to profile pathogenic CDK or cyclin variants, in order to gain knowledge on protein function and on pathogenic mechanisms.
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Affiliation(s)
- Pierre Colas
- Laboratory of Integrative Biology of Marine Models, Station Biologique de Roscoff, Sorbonne Université / CNRS, Roscoff, France.
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28
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Gabriel E, Ramani A, Altinisik N, Gopalakrishnan J. Human Brain Organoids to Decode Mechanisms of Microcephaly. Front Cell Neurosci 2020; 14:115. [PMID: 32457578 PMCID: PMC7225330 DOI: 10.3389/fncel.2020.00115] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 04/09/2020] [Indexed: 12/13/2022] Open
Abstract
Brain organoids are stem cell-based self-assembling 3D structures that recapitulate early events of human brain development. Recent improvements with patient-specific 3D brain organoids have begun to elucidate unprecedented details of the defective mechanisms that cause neurodevelopmental disorders of congenital and acquired microcephaly. In particular, brain organoids derived from primary microcephaly patients have uncovered mechanisms that deregulate neural stem cell proliferation, maintenance, and differentiation. Not only did brain organoids reveal unknown aspects of neurogenesis but also have illuminated surprising roles of cellular structures of centrosomes and primary cilia in regulating neurogenesis during brain development. Here, we discuss how brain organoids have started contributing to decoding the complexities of microcephaly, which are unlikely to be identified in the existing non-human models. Finally, we discuss the yet unresolved questions and challenges that can be addressed with the use of brain organoids as in vitro models of neurodevelopmental disorders.
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Affiliation(s)
- Elke Gabriel
- Laboratory for Centrosome and Cytoskeleton Biology, Institute für Humangenetik, Universitätsklinikum Düsseldorf, Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Anand Ramani
- Laboratory for Centrosome and Cytoskeleton Biology, Institute für Humangenetik, Universitätsklinikum Düsseldorf, Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Nazlican Altinisik
- Laboratory for Centrosome and Cytoskeleton Biology, Institute für Humangenetik, Universitätsklinikum Düsseldorf, Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Jay Gopalakrishnan
- Laboratory for Centrosome and Cytoskeleton Biology, Institute für Humangenetik, Universitätsklinikum Düsseldorf, Heinrich-Heine-Universität, Düsseldorf, Germany
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29
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Khan SA, Khan MA, Muhammad N, Bashir H, Khan N, Muhammad N, Yilmaz R, Khan S, Wasif N. A novel nonsense variant in SLC24A4 causing a rare form of amelogenesis imperfecta in a Pakistani family. BMC MEDICAL GENETICS 2020; 21:97. [PMID: 32380970 PMCID: PMC7206816 DOI: 10.1186/s12881-020-01038-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 04/28/2020] [Indexed: 02/07/2023]
Abstract
Background Amelogenesis imperfecta (AI) is a highly heterogeneous group of hereditary developmental abnormalities which mainly affects the dental enamel during tooth development in terms of its thickness, structure, and composition. It appears both in syndromic as well as non-syndromic forms. In the affected individuals, the enamel is usually thin, soft, rough, brittle, pitted, chipped, and abraded, having reduced functional ability and aesthetics. It leads to severe complications in the patient, like early tooth loss, severe discomfort, pain, dental caries, chewing difficulties, and discoloration of teeth from yellow to yellowish-brown or creamy type. The study aimed to identify the disease-causing variant in a consanguineous family. Methods We recruited a consanguineous Pashtun family of Pakistani origin. Exome sequencing analysis was followed by Sanger sequencing to identify the pathogenic variant in this family. Results Clinical analysis revealed hypomaturation AI having generalized yellow-brown or creamy type of discoloration in affected members. We identified a novel nonsense sequence variant c.1192C > T (p.Gln398*) in exon-12 of SLC24A4 by using exome sequencing. Later, its co-segregation within the family was confirmed by Sanger sequencing. The human gene mutation database (HGMD, 2019) has a record of five pathogenic variants in SLC24A4, causing AI phenotype. Conclusion This nonsense sequence variant c.1192C > T (p.Gln398*) is the sixth disease-causing variant in SLC24A4, which extends its mutation spectrum and confirms the role of this gene in the morphogenesis of human tooth enamel. The identified variant highlights the critical role of SLC24A4 in causing a rare AI type in humans.
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Affiliation(s)
- Sher Alam Khan
- Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology (KUST), Kohat, Pakistan
| | - Muhammad Adnan Khan
- Dental Material, Institute of Basic Medical Sciences, Khyber Medical University Peshawar, Peshawar, Pakistan
| | - Nazif Muhammad
- Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology (KUST), Kohat, Pakistan
| | - Hina Bashir
- Department of Biochemistry, Sharif Medical and Dental College, Lahore, Pakistan
| | - Niamat Khan
- Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology (KUST), Kohat, Pakistan
| | - Noor Muhammad
- Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology (KUST), Kohat, Pakistan
| | - Rüstem Yilmaz
- Department of Neurology, University of Ulm, Ulm, Germany
| | - Saadullah Khan
- Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology (KUST), Kohat, Pakistan.
| | - Naveed Wasif
- Institute of Molecular Biology and Biotechnology (IMBB), Center for Research in Molecular Medicine (CRiMM), The University of Lahore, Lahore, Pakistan. .,Department of Human Genetics, University of Ulm, Ulm, Germany. .,Institute of Human Genetics, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany.
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30
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The journey of Zika to the developing brain. Mol Biol Rep 2020; 47:3097-3115. [DOI: 10.1007/s11033-020-05349-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 02/25/2020] [Indexed: 12/14/2022]
Abstract
AbstractZika virus is a mosquito-borne Flavivirus originally isolated from humans in 1952. Following its re-emergence in Brazil in 2015, an increase in the number of babies born with microcephaly to infected mothers was observed. Microcephaly is a neurodevelopmental disorder, characterised phenotypically by a smaller than average head size, and is usually developed in utero. The 2015 outbreak in the Americas led to the World Health Organisation declaring Zika a Public Health Emergency of International Concern. Since then, much research into the effects of Zika has been carried out. Studies have investigated the structure of the virus, its effects on and evasion of the immune response, cellular entry including target receptors, its transmission from infected mother to foetus and its cellular targets. This review discusses current knowledge and novel research into these areas, in hope of developing a further understanding of how exposure of pregnant women to the Zika virus can lead to impaired brain development of their foetus. Although no longer considered an epidemic in the Americas, the mechanism by which Zika acts is still not comprehensively and wholly understood, and this understanding will be crucial in developing effective vaccines and treatments.
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31
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Zhou X, Zhi Y, Yu J, Xu D. The Yin and Yang of Autosomal Recessive Primary Microcephaly Genes: Insights from Neurogenesis and Carcinogenesis. Int J Mol Sci 2020; 21:ijms21051691. [PMID: 32121580 PMCID: PMC7084222 DOI: 10.3390/ijms21051691] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 02/23/2020] [Accepted: 02/26/2020] [Indexed: 12/26/2022] Open
Abstract
The stem cells of neurogenesis and carcinogenesis share many properties, including proliferative rate, an extensive replicative potential, the potential to generate different cell types of a given tissue, and an ability to independently migrate to a damaged area. This is also evidenced by the common molecular principles regulating key processes associated with cell division and apoptosis. Autosomal recessive primary microcephaly (MCPH) is a neurogenic mitotic disorder that is characterized by decreased brain size and mental retardation. Until now, a total of 25 genes have been identified that are known to be associated with MCPH. The inactivation (yin) of most MCPH genes leads to neurogenesis defects, while the upregulation (yang) of some MCPH genes is associated with different kinds of carcinogenesis. Here, we try to summarize the roles of MCPH genes in these two diseases and explore the underlying mechanisms, which will help us to explore new, attractive approaches to targeting tumor cells that are resistant to the current therapies.
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Affiliation(s)
- Xiaokun Zhou
- College of Biological Science and Engineering, Institute of Life Sciences, Fuzhou University, Fuzhou 350108, China; (X.Z.); (Y.Z.); (J.Y.)
| | - Yiqiang Zhi
- College of Biological Science and Engineering, Institute of Life Sciences, Fuzhou University, Fuzhou 350108, China; (X.Z.); (Y.Z.); (J.Y.)
| | - Jurui Yu
- College of Biological Science and Engineering, Institute of Life Sciences, Fuzhou University, Fuzhou 350108, China; (X.Z.); (Y.Z.); (J.Y.)
| | - Dan Xu
- College of Biological Science and Engineering, Institute of Life Sciences, Fuzhou University, Fuzhou 350108, China; (X.Z.); (Y.Z.); (J.Y.)
- Fujian Key Laboratory of Molecular Neurology, Institute of Neuroscience, Fujian Medical University, Fuzhou 350005, China
- Correspondence: ; Tel.: +86-17085937559
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32
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The Mitotic Apparatus and Kinetochores in Microcephaly and Neurodevelopmental Diseases. Cells 2019; 9:cells9010049. [PMID: 31878213 PMCID: PMC7016623 DOI: 10.3390/cells9010049] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 12/18/2019] [Accepted: 12/21/2019] [Indexed: 12/15/2022] Open
Abstract
Regulators of mitotic division, when dysfunctional or expressed in a deregulated manner (over- or underexpressed) in somatic cells, cause chromosome instability, which is a predisposing condition to cancer that is associated with unrestricted proliferation. Genes encoding mitotic regulators are growingly implicated in neurodevelopmental diseases. Here, we briefly summarize existing knowledge on how microcephaly-related mitotic genes operate in the control of chromosome segregation during mitosis in somatic cells, with a special focus on the role of kinetochore factors. Then, we review evidence implicating mitotic apparatus- and kinetochore-resident factors in the origin of congenital microcephaly. We discuss data emerging from these works, which suggest a critical role of correct mitotic division in controlling neuronal cell proliferation and shaping the architecture of the central nervous system.
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33
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Karaca E, Posey JE, Bostwick B, Liu P, Gezdirici A, Yesil G, Coban Akdemir Z, Bayram Y, Harms FL, Meinecke P, Alawi M, Bacino CA, Sutton VR, Kortüm F, Lupski JR. Biallelic and De Novo Variants in DONSON Reveal a Clinical Spectrum of Cell Cycle-opathies with Microcephaly, Dwarfism and Skeletal Abnormalities. Am J Med Genet A 2019; 179:2056-2066. [PMID: 31407851 DOI: 10.1002/ajmg.a.61315] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 07/10/2019] [Accepted: 07/14/2019] [Indexed: 01/30/2023]
Abstract
Co-occurrence of primordial dwarfism and microcephaly together with particular skeletal findings are seen in a wide range of Mendelian syndromes including microcephaly micromelia syndrome (MMS, OMIM 251230), microcephaly, short stature, and limb abnormalities (MISSLA, OMIM 617604), and microcephalic primordial dwarfisms (MPDs). Genes associated with these syndromes encode proteins that have crucial roles in DNA replication or in other critical steps of the cell cycle that link DNA replication to cell division. We identified four unrelated families with five affected individuals having biallelic or de novo variants in DONSON presenting with a core phenotype of severe short stature (z score < -3 SD), additional skeletal abnormalities, and microcephaly. Two apparently unrelated families with identical homozygous c.631C > T p.(Arg211Cys) variant had clinical features typical of Meier-Gorlin syndrome (MGS), while two siblings with compound heterozygous c.346delG p.(Asp116Ile*62) and c.1349A > G p.(Lys450Arg) variants presented with Seckel-like phenotype. We also identified a de novo c.683G > T p.(Trp228Leu) variant in DONSON in a patient with prominent micrognathia, short stature and hypoplastic femur and tibia, clinically diagnosed with Femoral-Facial syndrome (FFS, OMIM 134780). Biallelic variants in DONSON have been recently described in individuals with microcephalic dwarfism. These studies also demonstrated that DONSON has an essential conserved role in the cell cycle. Here we describe novel biallelic and de novo variants that are associated with MGS, Seckel-like phenotype and FFS, the last of which has not been associated with any disease gene to date.
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Affiliation(s)
- Ender Karaca
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | - Jennifer E Posey
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | - Bret Bostwick
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas.,Texas Children's Hospital, Baylor College of Medicine, Houston, Texas
| | - Pengfei Liu
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | - Alper Gezdirici
- Department of Medical Genetics, Kanuni Sultan Suleyman Training and Research Hospital, Istanbul, Turkey
| | - Gozde Yesil
- Department of Medical Genetics, Bezmialem University, Istanbul, Turkey
| | - Zeynep Coban Akdemir
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | - Yavuz Bayram
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | - Frederike L Harms
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Peter Meinecke
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Malik Alawi
- Bioinformatics Service Facility, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Center for Bioinformatics, University of Hamburg, Hamburg, Germany.,Heinrich Pette Institute, Leibniz Institute for Experimental Virology, Virus Genomics, Hamburg, Germany
| | - Carlos A Bacino
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas.,Texas Children's Hospital, Baylor College of Medicine, Houston, Texas
| | - V Reid Sutton
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas.,Texas Children's Hospital, Baylor College of Medicine, Houston, Texas
| | - Fanny Kortüm
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - James R Lupski
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas.,Texas Children's Hospital, Baylor College of Medicine, Houston, Texas.,Human Genome Sequencing Center, Baylor College of Medicine, Houston, Texas.,Department of Pediatrics, Baylor College of Medicine, 1 Baylor Plaza, Houston, Texas
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Guarnieri FC, de Chevigny A, Falace A, Cardoso C. Disorders of neurogenesis and cortical development. DIALOGUES IN CLINICAL NEUROSCIENCE 2019. [PMID: 30936766 PMCID: PMC6436956 DOI: 10.31887/dcns.2018.20.4/ccardoso] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The development of the cerebral cortex requires complex sequential processes that have to be precisely orchestrated. The localization and timing of neuronal progenitor proliferation and of neuronal migration define the identity, laminar positioning, and specific connectivity of each single cortical neuron. Alterations at any step of this organized series of events—due to genetic mutations or environmental factors—lead to defined brain pathologies collectively known as malformations of cortical development (MCDs), which are now recognized as a leading cause of drug-resistant epilepsy and intellectual disability. In this heterogeneous group of disorders, macroscopic alterations of brain structure (eg, heterotopic nodules, small or absent gyri, double cortex) can be recognized and probably subtend a general reorganization of neuronal circuits. In this review, we provide an overview of the molecular mechanisms that are implicated in the generation of genetic MCDs associated with aberrations at various steps of neurogenesis and cortical development.
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Affiliation(s)
| | | | - Antonio Falace
- Aix-Marseille University, INSERM U1249, INMED, Marseille 13009, France
| | - Carlos Cardoso
- Aix-Marseille University, INSERM U1249, INMED, Marseille 13009, France
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35
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Al-Shaer AE, Flentke GR, Berres ME, Garic A, Smith SM. Exon level machine learning analyses elucidate novel candidate miRNA targets in an avian model of fetal alcohol spectrum disorder. PLoS Comput Biol 2019; 15:e1006937. [PMID: 30973878 PMCID: PMC6478348 DOI: 10.1371/journal.pcbi.1006937] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 04/23/2019] [Accepted: 03/11/2019] [Indexed: 12/20/2022] Open
Abstract
Gestational alcohol exposure causes fetal alcohol spectrum disorder (FASD) and is a prominent cause of neurodevelopmental disability. Whole transcriptome sequencing (RNA-Seq) offer insights into mechanisms underlying FASD, but gene-level analysis provides limited information regarding complex transcriptional processes such as alternative splicing and non-coding RNAs. Moreover, traditional analytical approaches that use multiple hypothesis testing with a false discovery rate adjustment prioritize genes based on an adjusted p-value, which is not always biologically relevant. We address these limitations with a novel approach and implemented an unsupervised machine learning model, which we applied to an exon-level analysis to reduce data complexity to the most likely functionally relevant exons, without loss of novel information. This was performed on an RNA-Seq paired-end dataset derived from alcohol-exposed neural fold-stage chick crania, wherein alcohol causes facial deficits recapitulating those of FASD. A principal component analysis along with k-means clustering was utilized to extract exons that deviated from baseline expression. This identified 6857 differentially expressed exons representing 1251 geneIDs; 391 of these genes were identified in a prior gene-level analysis of this dataset. It also identified exons encoding 23 microRNAs (miRNAs) having significantly differential expression profiles in response to alcohol. We developed an RDAVID pipeline to identify KEGG pathways represented by these exons, and separately identified predicted KEGG pathways targeted by these miRNAs. Several of these (ribosome biogenesis, oxidative phosphorylation) were identified in our prior gene-level analysis. Other pathways are crucial to facial morphogenesis and represent both novel (focal adhesion, FoxO signaling, insulin signaling) and known (Wnt signaling) alcohol targets. Importantly, there was substantial overlap between the exomes themselves and the predicted miRNA targets, suggesting these miRNAs contribute to the gene-level expression changes. Our novel application of unsupervised machine learning in conjunction with statistical analyses facilitated the discovery of signaling pathways and miRNAs that inform mechanisms underlying FASD.
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Affiliation(s)
- Abrar E. Al-Shaer
- Nutrition Research Institute, Department of Nutrition, University of North Carolina at Chapel Hill, Kannapolis, North Carolina, United States of America
| | - George R. Flentke
- Nutrition Research Institute, Department of Nutrition, University of North Carolina at Chapel Hill, Kannapolis, North Carolina, United States of America
| | - Mark E. Berres
- Department of Nutritional Sciences, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Ana Garic
- Department of Nutritional Sciences, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Susan M. Smith
- Nutrition Research Institute, Department of Nutrition, University of North Carolina at Chapel Hill, Kannapolis, North Carolina, United States of America
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36
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Gharbaran R, Somenarain L. Putative Cellular and Molecular Roles of Zika Virus in Fetal and Pediatric Neuropathologies. Pediatr Dev Pathol 2019; 22:5-21. [PMID: 30149771 DOI: 10.1177/1093526618790742] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Although the World Health Organization declared an end to the recent Zika virus (ZIKV) outbreak and its association with adverse fetal and pediatric outcome, on November 18, 2016, the virus still remains a severe public health threat. Laboratory experiments thus far supported the suspicions that ZIKV is a teratogenic agent. Evidence indicated that ZIKV infection cripples the host cells' innate immune responses, allowing productive replication and potential dissemination of the virus. In addition, studies suggest potential transplacental passage of the virus and subsequent selective targeting of neural progenitor cells (NPCs). Depletion of NPCs by ZIKV is associated with restricted brain growth. And while microcephaly can result from infection at any gestational stages, the risk is greater during the first trimester. Although a number of recent studies revealed some of specific molecular and cellular roles of ZIKV proteins of this mosquito-borne flavivirus, the mechanisms by which it produces it suspected pathophysiological effects are not completely understood. Thus, this review highlights the cellular and molecular evidence that implicate ZIKV in fetal and pediatric neuropathologies.
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Affiliation(s)
- Rajendra Gharbaran
- 1 Department of Biological Sciences, Bronx Community College, The City University of New York, Bronx, New York
| | - Latchman Somenarain
- 1 Department of Biological Sciences, Bronx Community College, The City University of New York, Bronx, New York
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37
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Castro FL, Geddes VEV, Monteiro FLL, Gonçalves RMDT, Campanati L, Pezzuto P, Paquin-Proulx D, Schamber-Reis BL, Azevedo GS, Gonçalves AL, Cunha DP, Moreira MEL, Vasconcelos ZFM, Chimeli L, Melo A, Tanuri A, Nixon DF, Ribeiro-Alves M, Aguiar RS. MicroRNAs 145 and 148a Are Upregulated During Congenital Zika Virus Infection. ASN Neuro 2019; 11:1759091419850983. [PMID: 31213064 PMCID: PMC6585135 DOI: 10.1177/1759091419850983] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 04/04/2019] [Accepted: 04/13/2019] [Indexed: 12/24/2022] Open
Abstract
Zika virus (ZIKV) is an arthropod-borne virus (arbovirus) member of the Flaviviridae family, which has been associated with the development of the congenital Zika syndrome (CZS). RNA viruses, such as flaviviruses, have been reported to exert a profound impact on host microRNAs (miRNAs). Cellular miRNAs modulated by ZIKV may help identify cellular pathways of relevance to pathogenesis. Here, we screened 754 human cellular miRNAs modulated by ZIKV infection (Brazilian PE strain) in a neuroblastoma cell line. Seven miRNAs (miR-99a*, miR-126*, miR-190b, miR-361-3p, miR-522-3p, miR-299-5p, and miR-1267) were downregulated during ZIKV infection, while miR-145 was upregulated. Furthermore, 11 miRNAs were exclusively expressed in ZIKV-infected (miR-148a, miR-342-5p, miR-598, and miR-708-3p) or mock cells (miR-208, miR-329, miR-432-5p, miR-488, miR-518b, miR-520g, and miR-767-5p). Furthermore, in silico analysis indicated that some central nervous system, cellular migration, and adhesion function-related biological processes were overrepresented in the list of target genes of the miRNAs regulated in ZIKV-infected cells, especially for miR-145 and miR-148a. The induction of miR-145 and miR-148a was confirmed in postmortem brain samples from stillborn with severe CZS. Finally, we determined the expression regulation of microcephaly related genes through RNA interference pathway caused by ZIKV directly on neuron cells.
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Affiliation(s)
- Fernanda L. Castro
- Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Victor E. V. Geddes
- Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Fábio L. L. Monteiro
- Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Raphael M. D. T. Gonçalves
- Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Loraine Campanati
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Paula Pezzuto
- Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Dominic Paquin-Proulx
- Department of Microbiology, Immunology & Tropical Medicine, The George Washington University, Washington, DC, USA
| | - Bruno L. Schamber-Reis
- Faculdade de Ciências Médicas de Campina Grande, Núcleo de Genética Médica, Centro Universitário UniFacisa, Campina Grande, Brazil
| | | | | | | | | | | | - Leila Chimeli
- Laboratório de Neuropatologia, Instituto Estadual do Cérebro, Rio de Janeiro, Brazil
| | - Adriana Melo
- Faculdade de Ciências Médicas de Campina Grande, Núcleo de Genética Médica, Centro Universitário UniFacisa, Campina Grande, Brazil
- Instituto de Pesquisa Professor Amorim Neto, Campina Grande, Brazil
| | - Amilcar Tanuri
- Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Douglas F. Nixon
- Division of Infectious Diseases, Weill Cornell Medicine, New York City, NY, USA
| | | | - Renato S. Aguiar
- Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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Abstract
Mutations in CDK13 have recently been identified as a novel cause of syndromic intellectual disability. In this chapter, we review the 44 cases of CDK13-related disorder reported to date, highlighting key clinical pointers to this diagnosis including characteristic craniofacial features, feeding difficulties in infancy, and the presence of structural heart or brain malformations. The spectrum of reported mutations is also described, demonstrating an excess of missense mutations arising in the protein kinase domain. Exploration of genotype-phenotype correlations suggests a trend toward milder phenotypes in patients with mutations predicted to cause haploinsufficiency of CDK13, while missense mutations affecting amino acid residue 842 appear most likely to be associated with structural malformations. The greater phenotypic impact of missense variants is hypothesized to occur due to a dominant-negative mechanism, by which the mutant protein acts to sequester cyclin K in inactive complexes. Functional studies to validate this hypothesis have not yet been carried out, however. Differential diagnosis and recommendations for clinical care of patients with CDK13-related disorder are also described, emphasizing baseline echocardiography, vigilance for feeding and swallowing difficulties, and regular developmental evaluation as key components of care. Finally, future directions for CDK13 research are discussed, including the need to resolve uncertainty regarding pathogenicity of CDK13 haploinsufficiency, and to gather further longitudinal data from large cohorts in order to inform the clinical care of patients with this diagnosis.
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Affiliation(s)
- Mark James Hamilton
- Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust, Nottingham, United Kingdom.
| | - Mohnish Suri
- Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust, Nottingham, United Kingdom.
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39
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Braun DA, Lovric S, Schapiro D, Schneider R, Marquez J, Asif M, Hussain MS, Daga A, Widmeier E, Rao J, Ashraf S, Tan W, Lusk CP, Kolb A, Jobst-Schwan T, Schmidt JM, Hoogstraten CA, Eddy K, Kitzler TM, Shril S, Moawia A, Schrage K, Khayyat AIA, Lawson JA, Gee HY, Warejko JK, Hermle T, Majmundar AJ, Hugo H, Budde B, Motameny S, Altmüller J, Noegel AA, Fathy HM, Gale DP, Waseem SS, Khan A, Kerecuk L, Hashmi S, Mohebbi N, Ettenger R, Serdaroğlu E, Alhasan KA, Hashem M, Goncalves S, Ariceta G, Ubetagoyena M, Antonin W, Baig SM, Alkuraya FS, Shen Q, Xu H, Antignac C, Lifton RP, Mane S, Nürnberg P, Khokha MK, Hildebrandt F. Mutations in multiple components of the nuclear pore complex cause nephrotic syndrome. J Clin Invest 2018; 128:4313-4328. [PMID: 30179222 PMCID: PMC6159964 DOI: 10.1172/jci98688] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 07/24/2018] [Indexed: 01/08/2023] Open
Abstract
Steroid-resistant nephrotic syndrome (SRNS) almost invariably progresses to end-stage renal disease. Although more than 50 monogenic causes of SRNS have been described, a large proportion of SRNS remains unexplained. Recently, it was discovered that mutations of NUP93 and NUP205, encoding 2 proteins of the inner ring subunit of the nuclear pore complex (NPC), cause SRNS. Here, we describe mutations in genes encoding 4 components of the outer rings of the NPC, namely NUP107, NUP85, NUP133, and NUP160, in 13 families with SRNS. Using coimmunoprecipitation experiments, we showed that certain pathogenic alleles weakened the interaction between neighboring NPC subunits. We demonstrated that morpholino knockdown of nup107, nup85, or nup133 in Xenopus disrupted glomerulogenesis. Re-expression of WT mRNA, but not of mRNA reflecting mutations from SRNS patients, mitigated this phenotype. We furthermore found that CRISPR/Cas9 knockout of NUP107, NUP85, or NUP133 in podocytes activated Cdc42, an important effector of SRNS pathogenesis. CRISPR/Cas9 knockout of nup107 or nup85 in zebrafish caused developmental anomalies and early lethality. In contrast, an in-frame mutation of nup107 did not affect survival, thus mimicking the allelic effects seen in humans. In conclusion, we discovered here that mutations in 4 genes encoding components of the outer ring subunits of the NPC cause SRNS and thereby provide further evidence that specific hypomorphic mutations in these essential genes cause a distinct, organ-specific phenotype.
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Affiliation(s)
- Daniela A. Braun
- Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
- Department of Internal Medicine D, University Hospital of Münster, Münster, Germany
| | - Svjetlana Lovric
- Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - David Schapiro
- Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Ronen Schneider
- Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Jonathan Marquez
- Pediatric Genomics Discovery Program, Department of Pediatrics and Genetics, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Maria Asif
- Cologne Center for Genomics, University of Cologne, Cologne, Germany
- Institute of Biochemistry I, Medical Faculty, University of Cologne, Cologne, Germany
- Human Molecular Genetics Laboratory, Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering, Pakistan Institute of Engineering and Applied Sciences, Faisalabad, Pakistan
| | - Muhammad Sajid Hussain
- Cologne Center for Genomics, University of Cologne, Cologne, Germany
- Institute of Biochemistry I, Medical Faculty, University of Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne, University of Cologne, Cologne, Germany
| | - Ankana Daga
- Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Eugen Widmeier
- Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Jia Rao
- Department of Nephrology, Children’s Hospital of Fudan University, Shanghai, China
- Shanghai Kidney Development and Pediatric Kidney Disease Research Center, Shanghai, China
| | - Shazia Ashraf
- Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Weizhen Tan
- Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - C. Patrick Lusk
- Department of Cell Biology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Amy Kolb
- Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Tilman Jobst-Schwan
- Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Johanna Magdalena Schmidt
- Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Charlotte A. Hoogstraten
- Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Kaitlyn Eddy
- Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Thomas M. Kitzler
- Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Shirlee Shril
- Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Abubakar Moawia
- Cologne Center for Genomics, University of Cologne, Cologne, Germany
- Institute of Biochemistry I, Medical Faculty, University of Cologne, Cologne, Germany
- Human Molecular Genetics Laboratory, Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering, Pakistan Institute of Engineering and Applied Sciences, Faisalabad, Pakistan
| | - Kathrin Schrage
- Institute of Biochemistry I, Medical Faculty, University of Cologne, Cologne, Germany
| | - Arwa Ishaq A. Khayyat
- Institute of Biochemistry I, Medical Faculty, University of Cologne, Cologne, Germany
- Biochemistry Department, King Saud University, Riyadh, Saudi Arabia
| | - Jennifer A. Lawson
- Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Heon Yung Gee
- Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Jillian K. Warejko
- Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Tobias Hermle
- Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Amar J. Majmundar
- Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Hannah Hugo
- Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Birgit Budde
- Cologne Center for Genomics, University of Cologne, Cologne, Germany
| | - Susanne Motameny
- Cologne Center for Genomics, University of Cologne, Cologne, Germany
| | - Janine Altmüller
- Cologne Center for Genomics, University of Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne, University of Cologne, Cologne, Germany
- Institute of Human Genetics, University of Cologne, Cologne, Germany
| | - Angelika Anna Noegel
- Institute of Biochemistry I, Medical Faculty, University of Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne, University of Cologne, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Hanan M. Fathy
- Pediatric Nephrology Unit, Alexandria Faculty of Medicine, University of Alexandria, Alexandria, Egypt
| | - Daniel P. Gale
- Centre for Nephrology, University College London, Royal Free Hospital, London, United Kingdom
| | - Syeda Seema Waseem
- Cologne Center for Genomics, University of Cologne, Cologne, Germany
- Institute of Biochemistry I, Medical Faculty, University of Cologne, Cologne, Germany
- Human Molecular Genetics Laboratory, Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering, Pakistan Institute of Engineering and Applied Sciences, Faisalabad, Pakistan
| | - Ayaz Khan
- Human Molecular Genetics Laboratory, Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering, Pakistan Institute of Engineering and Applied Sciences, Faisalabad, Pakistan
| | - Larissa Kerecuk
- Birmingham Children’s Hospital NHS Foundation Trust, Birmingham, United Kingdom
| | - Seema Hashmi
- Department of Pediatric Nephrology, Sindh Institute of Urology and Transplantation, Karachi, Pakistan
| | - Nilufar Mohebbi
- Division of Nephrology, University Hospital Zurich, Zurich, Switzerland
| | - Robert Ettenger
- Department of Pediatrics, University of California, Los Angeles, California
| | - Erkin Serdaroğlu
- Department of Pediatric Nephrology, Dr. Behçet Uz Children’s Hospital, Izmir, Turkey
| | - Khalid A. Alhasan
- Pediatric Department, College of Medicine, King Saud University and King Khalid University Hospital, Riyadh, Saudi Arabia
| | - Mais Hashem
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
- Department of Anatomy and Cell Biology, College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
- Saudi Human Genome Program, King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
| | - Sara Goncalves
- Laboratory of Hereditary Kidney Diseases, INSERM UMR1163, Imagine Institute, Paris, France
- Université Paris Descartes–Sorbonne Paris Cité, Imagine Institute, Paris, France
| | - Gema Ariceta
- Universitat Autonoma de Barcelona, Hospital Universitari Vall d’Hebron, Pediatric Nephrology, Barcelona, Spain
| | - Mercedes Ubetagoyena
- Hospital Universitario Donostia, Pediatric Nephrology, Donostia–San Sebastian, Spain
| | - Wolfram Antonin
- Institute of Biochemistry and Molecular Cell Biology, Medical School, RWTH Aachen University, 52074 Aachen, Germany
| | - Shahid Mahmood Baig
- Human Molecular Genetics Laboratory, Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering, Pakistan Institute of Engineering and Applied Sciences, Faisalabad, Pakistan
| | - Fowzan S. Alkuraya
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
- Department of Anatomy and Cell Biology, College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
- Saudi Human Genome Program, King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
| | - Qian Shen
- Department of Nephrology, Children’s Hospital of Fudan University, Shanghai, China
- Shanghai Kidney Development and Pediatric Kidney Disease Research Center, Shanghai, China
| | - Hong Xu
- Department of Nephrology, Children’s Hospital of Fudan University, Shanghai, China
- Shanghai Kidney Development and Pediatric Kidney Disease Research Center, Shanghai, China
| | - Corinne Antignac
- Laboratory of Hereditary Kidney Diseases, INSERM UMR1163, Imagine Institute, Paris, France
- Université Paris Descartes–Sorbonne Paris Cité, Imagine Institute, Paris, France
- Department of Genetics, Necker Hospital, Assistance Publique–Hôpitaux de Paris, Paris, France
| | - Richard P. Lifton
- Department of Genetics, Yale University School of Medicine, New Haven, Connecticut, USA
- Laboratory of Human Genetics and Genomics, The Rockefeller University, New York, New York, USA
| | - Shrikant Mane
- Department of Genetics, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Peter Nürnberg
- Cologne Center for Genomics, University of Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne, University of Cologne, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Mustafa K. Khokha
- Pediatric Genomics Discovery Program, Department of Pediatrics and Genetics, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Friedhelm Hildebrandt
- Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
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Müller R, Stumpf M, Wehrstedt R, Sukumaran SK, Karow MA, Marko M, Noegel AA, Eichinger L. The regulatory subunit phr2AB of Dictyostelium discoideum phosphatase PP2A interacts with the centrosomal protein CEP161, a CDK5RAP2 ortholog. Genes Cells 2018; 23:923-931. [PMID: 30133996 DOI: 10.1111/gtc.12637] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 08/09/2018] [Accepted: 08/09/2018] [Indexed: 11/29/2022]
Abstract
phr2AB is the regulatory subunit of the Dictyostelium discoideum phosphatase PP2A and is the ortholog of the human B55 regulatory subunit of PP2A. phr2AB was isolated as a binding partner of the centrosomal protein CEP161, an ortholog of mammalian CDK5RAP2. CEP161 is presumably a phosphoprotein and a component of the Hippo pathway. The interaction site was located in the N-terminal half of CEP161 which encompasses the γTURC binding domain in CEP161. This binding domain is responsible for binding of the γ-tubulin ring complex which allows microtubule nucleation at the centrosome. GFP-tagged phr2AB is diffusely distributed throughout the cell and enriched at the centrosome. Ectopic expression of phr2AB as GFP fusion protein led to multinucleation, aberrant nucleus centrosome ratios and an altered sensitivity to okadaic acid. Some of these features were also affected in cells over-expressing domains of CEP161 and in cells from patients suffering from primary microcephaly, which carried a mutated CDK5RAP2 gene.
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Affiliation(s)
- Rolf Müller
- Institute for Biochemistry I, Medical Faculty, University Hospital Cologne, Cologne, Germany.,Center for Molecular Medicine Cologne and Cologne Cluster on Cellular Stress Responses in Aging-Associated Diseases, Medical Faculty, University of Cologne, Cologne, Germany
| | - Maria Stumpf
- Institute for Biochemistry I, Medical Faculty, University Hospital Cologne, Cologne, Germany.,Center for Molecular Medicine Cologne and Cologne Cluster on Cellular Stress Responses in Aging-Associated Diseases, Medical Faculty, University of Cologne, Cologne, Germany
| | - Regina Wehrstedt
- Institute for Biochemistry I, Medical Faculty, University Hospital Cologne, Cologne, Germany.,Center for Molecular Medicine Cologne and Cologne Cluster on Cellular Stress Responses in Aging-Associated Diseases, Medical Faculty, University of Cologne, Cologne, Germany
| | - Salil K Sukumaran
- Institute for Biochemistry I, Medical Faculty, University Hospital Cologne, Cologne, Germany.,Center for Molecular Medicine Cologne and Cologne Cluster on Cellular Stress Responses in Aging-Associated Diseases, Medical Faculty, University of Cologne, Cologne, Germany
| | - Malte A Karow
- Institute for Biochemistry I, Medical Faculty, University Hospital Cologne, Cologne, Germany.,Center for Molecular Medicine Cologne and Cologne Cluster on Cellular Stress Responses in Aging-Associated Diseases, Medical Faculty, University of Cologne, Cologne, Germany
| | - Marija Marko
- Institute for Biochemistry I, Medical Faculty, University Hospital Cologne, Cologne, Germany.,Center for Molecular Medicine Cologne and Cologne Cluster on Cellular Stress Responses in Aging-Associated Diseases, Medical Faculty, University of Cologne, Cologne, Germany
| | - Angelika A Noegel
- Institute for Biochemistry I, Medical Faculty, University Hospital Cologne, Cologne, Germany.,Center for Molecular Medicine Cologne and Cologne Cluster on Cellular Stress Responses in Aging-Associated Diseases, Medical Faculty, University of Cologne, Cologne, Germany
| | - Ludwig Eichinger
- Institute for Biochemistry I, Medical Faculty, University Hospital Cologne, Cologne, Germany.,Center for Molecular Medicine Cologne and Cologne Cluster on Cellular Stress Responses in Aging-Associated Diseases, Medical Faculty, University of Cologne, Cologne, Germany
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41
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Comprehensive review on the molecular genetics of autosomal recessive primary microcephaly (MCPH). Genet Res (Camb) 2018; 100:e7. [PMID: 30086807 DOI: 10.1017/s0016672318000046] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Primary microcephaly (MCPH) is an autosomal recessive sporadic neurodevelopmental ailment with a trivial head size characteristic that is below 3-4 standard deviations. MCPH is the smaller upshot of an architecturally normal brain; a significant decrease in size is seen in the cerebral cortex. At birth MCPH presents with non-progressive mental retardation, while secondary microcephaly (onset after birth) presents with and without other syndromic features. MCPH is a neurogenic mitotic syndrome nevertheless pretentious patients demonstrate normal neuronal migration, neuronal apoptosis and neural function. Eighteen MCPH loci (MCPH1-MCPH18) have been mapped to date from various populations around the world and contain the following genes: Microcephalin, WDR62, CDK5RAP2, CASC5, ASPM, CENPJ, STIL, CEP135, CEP152, ZNF335, PHC1, CDK6, CENPE, SASS6, MFSD2A, ANKLE2, CIT and WDFY3, clarifying our understanding about the molecular basis of microcephaly genetic disorder. It has previously been reported that phenotype disease is caused by MCB gene mutations and the causes of this phenotype are disarrangement of positions and organization of chromosomes during the cell cycle as a result of mutated DNA, centriole duplication, neurogenesis, neuronal migration, microtubule dynamics, transcriptional control and the cell cycle checkpoint having some invisible centrosomal process that can manage the number of neurons that are produced by neuronal precursor cells. Furthermore, researchers inform us about the clinical management of families that are suffering from MCPH. Establishment of both molecular understanding and genetic advocating may help to decrease the rate of this ailment. This current review study examines newly identified genes along with previously identified genes involved in autosomal recessive MCPH.
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42
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Zhu Z, Dai J, Liao Y, Ma J, Zhou W. [ARTICLE WITHDRAWN] Knockdown of Long Noncoding RNA LINC00152 Suppresses Cellular Proliferation and Invasion in Glioma Cells by Regulating miR-4775. Oncol Res 2018; 26:857-867. [PMID: 28800786 PMCID: PMC7844725 DOI: 10.3727/096504017x15016337254597] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
THIS ARTICLE WAS WITHDRAWN BY THE PUBLISHERS IN OCTOBER 2020.
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Affiliation(s)
- Zhankun Zhu
- *Department of Clinical Laboratory, Ningbo No. 2 Hospital, Ningbo, Zhejiang, P.R. China
| | - Jinhua Dai
- *Department of Clinical Laboratory, Ningbo No. 2 Hospital, Ningbo, Zhejiang, P.R. China
| | - Yufeng Liao
- *Department of Clinical Laboratory, Ningbo No. 2 Hospital, Ningbo, Zhejiang, P.R. China
| | - Jianbo Ma
- *Department of Clinical Laboratory, Ningbo No. 2 Hospital, Ningbo, Zhejiang, P.R. China
| | - Wei Zhou
- †Department of Neurosurgery, Ningbo No. 2 Hospital, Ningbo, Zhejiang, P.R. China
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43
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Santos GRBD, Aragão FBA, Lobão WJDM, Lima FR, Andrade LMRLD, Furtado QR, Batista JE. Relationship between microcephaly and Zika virus during pregnancy: a review. Rev Assoc Med Bras (1992) 2018; 64:635-642. [DOI: 10.1590/1806-9282.64.07.635] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 12/14/2017] [Indexed: 11/22/2022] Open
Abstract
SUMMARY AIM: the present study analysed the association between Zika-virus and microcephaly during the gestational period of women in Brazil. Methodology: Systematic reviews of intervention research, current publications of clinical investigations were used systematic search strategies in three electronic databases PubMed, SciELO and Google academic. The following keywords were used: Microcephaly, gestation, Zika-virus to perform the search, and 1020 articles were obtained after exclusion, 45 were left and 35 were eligible. The collection period was from 2004 to 2017. Results: Epidemiological data suggest a temporal association between the quantitative increase and the Zika-virus epidemic, especially in Northeast Brazil. It is not consensual to measure the cephalic perimeter curve to be considered. Conclusion: Given this, the application of techniques to accurately diagnose the relationship between causes and effects in the pathogenesis of Zika virus infection in the central nervous system should be prioritized.
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44
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Ahmad F, Nasir A, Thiele H, Umair M, Borck G, Ahmad W. A novel homozygous missense variant in NECTIN4 (PVRL4) causing ectodermal dysplasia cutaneous syndactyly syndrome. Ann Hum Genet 2018; 82:232-238. [PMID: 29430627 DOI: 10.1111/ahg.12244] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 11/14/2017] [Accepted: 12/26/2017] [Indexed: 11/28/2022]
Abstract
Ectodermal dysplasia syndactyly syndrome 1 (EDSS1) is a rare form of ectodermal dysplasia including anomalies of hair, nails, and teeth along with bilateral cutaneous syndactyly of hands and feet. In the present report, we performed a clinical and genetic characterization of a consanguineous Pakistani family with four individuals affected by EDSS1. We performed exome sequencing using DNA of one affected individual. Exome data analysis identified a novel homozygous missense variant (c.242T>C; p.(Leu81Pro)) in NECTIN4 (PVRL4). Sanger sequencing validated this variant and confirmed its cosegregation with the disease phenotype in the family members. Thus, our report adds a novel variant to the NECTIN4 mutation spectrum and contributes to the NECTIN4-related clinical characterization.
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Affiliation(s)
- Farooq Ahmad
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
- Institute of Human Genetics, University of Ulm, Ulm, Germany
| | - Abdul Nasir
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Holger Thiele
- Cologne Center for Genomics (CCG), University of Cologne, Cologne, Germany
| | - Muhammad Umair
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Guntram Borck
- Institute of Human Genetics, University of Ulm, Ulm, Germany
| | - Wasim Ahmad
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
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45
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Abstract
Primary microcephaly (MCPH, for "microcephaly primary hereditary") is a disorder of brain development that results in a head circumference more than 3 standard deviations below the mean for age and gender. It has a wide variety of causes, including toxic exposures, in utero infections, and metabolic conditions. While the genetic microcephaly syndromes are relatively rare, studying these syndromes can reveal molecular mechanisms that are critical in the regulation of neural progenitor cells, brain size, and human brain evolution. Many of the causative genes for MCPH encode centrosomal proteins involved in centriole biogenesis. However, other MCPH genes fall under different mechanistic categories, notably DNA replication and repair. Recent gene discoveries and functional studies have implicated novel cellular processes, such as cytokinesis, centromere and kinetochore function, transmembrane or intracellular transport, Wnt signaling, and autophagy, as well as the apical polarity complex. Thus, MCPH genes implicate a wide variety of molecular and cellular mechanisms in the regulation of cerebral cortical size during development.
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Affiliation(s)
- Divya Jayaraman
- Division of Genetics and Genomics, Manton Center for Orphan Disease Research, and Howard Hughes Medical Institute, Boston Children's Hospital, Boston, Massachusetts 02115, USA.,Harvard-MIT MD-PhD Program, Harvard Medical School, Boston, Massachusetts 02115, USA.,Current affiliation: Boston Combined Residency Program (Child Neurology), Boston Children's Hospital, Boston, Massachusetts 02115, USA;
| | - Byoung-Il Bae
- Department of Neurosurgery, Yale University School of Medicine, New Haven, Connecticut 06510, USA;
| | - Christopher A Walsh
- Division of Genetics and Genomics, Manton Center for Orphan Disease Research, and Howard Hughes Medical Institute, Boston Children's Hospital, Boston, Massachusetts 02115, USA.,Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA.,Departments of Pediatrics and Neurology, Harvard Medical School, Boston, Massachusetts 02115, USA;
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46
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Lang PY, Gershon TR. A New Way to Treat Brain Tumors: Targeting Proteins Coded by Microcephaly Genes?: Brain tumors and microcephaly arise from opposing derangements regulating progenitor growth. Drivers of microcephaly could be attractive brain tumor targets. Bioessays 2018; 40:e1700243. [PMID: 29577351 PMCID: PMC5910257 DOI: 10.1002/bies.201700243] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 02/12/2018] [Indexed: 02/06/2023]
Abstract
New targets for brain tumor therapies may be identified by mutations that cause hereditary microcephaly. Brain growth depends on the repeated proliferation of stem and progenitor cells. Microcephaly syndromes result from mutations that specifically impair the ability of brain progenitor or stem cells to proliferate, by inducing either premature differentiation or apoptosis. Brain tumors that derive from brain progenitor or stem cells may share many of the specific requirements of their cells of origin. These tumors may therefore be susceptible to disruptions of the protein products of genes that are mutated in microcephaly. The potential for the products of microcephaly genes to be therapeutic targets in brain tumors are highlighted hereby reviewing research on EG5, KIF14, ASPM, CDK6, and ATR. Treatments that disrupt these proteins may open new avenues for brain tumor therapy that have increased efficacy and decreased toxicity.
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Affiliation(s)
- Patrick Y. Lang
- Department of Cell Biology and Physiology, School of Medicine, University of North Carolina, Chapel Hill, North Carolina 27599, USA
- Department of Neurology, School of Medicine, University of North Carolina, Chapel Hill, North Carolina 27599, USA
| | - Timothy R. Gershon
- Department of Neurology, School of Medicine, University of North Carolina, Chapel Hill, North Carolina 27599, USA
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina 27599, USA
- Neuroscience Center, University of North Carolina, Chapel Hill, North Carolina 27599, USA
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47
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McLean E, Bhattarai R, Hughes BW, Mahalingam K, Bagasra O. Computational identification of mutually homologous Zika virus miRNAs that target microcephaly genes. Libyan J Med 2018; 12:1304505. [PMID: 28385119 PMCID: PMC5418939 DOI: 10.1080/19932820.2017.1304505] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Background Zika virus (ZIKV) has been associated with a variety of neuropathologies, including microcephaly. We hypothesize that ZIKV genes activate host microRNAs (miRNAs) causing dysfunctional development of human fetal brains. Objectives/methods A bioinformatics search for miRNA genome-wide binding sites in the prototypic ZIKV (strain MR766) was undertaken to hunt for miRNAs with significant similarities with MCPH genetic sequences responsible for inducing MCHP in human fetal brains. Results Six ZIKV miRNAs were found to share mutual homology with 12 MCPH genetic sequences responsible for inducing MCPH. Noteworthy was miR-1304, which expressed 100% identity to six different MCPH genes. Conclusions We suggest that following infection of fetal neurons ZIKV may modulate the action of various miRNAs, and miR-1304 in particular, resulting in microcephaly.
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Affiliation(s)
- Ewen McLean
- a Department of Biology, South Carolina Center for Biotechnology , Claflin University , SC , USA
| | - Roshan Bhattarai
- a Department of Biology, South Carolina Center for Biotechnology , Claflin University , SC , USA
| | - Brandon W Hughes
- a Department of Biology, South Carolina Center for Biotechnology , Claflin University , SC , USA
| | - Kuhanandha Mahalingam
- b Information Technology and Department of Computer Science & Mathematics , Claflin University , Orangeburg , SC , USA
| | - Omar Bagasra
- a Department of Biology, South Carolina Center for Biotechnology , Claflin University , SC , USA
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de Sena Cortabitarte A, Berkel S, Cristian FB, Fischer C, Rappold GA. A direct regulatory link between microRNA-137 and SHANK2: implications for neuropsychiatric disorders. J Neurodev Disord 2018; 10:15. [PMID: 29665782 PMCID: PMC5905159 DOI: 10.1186/s11689-018-9233-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 04/04/2018] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Mutations in the SHANK genes, which encode postsynaptic scaffolding proteins, have been linked to a spectrum of neurodevelopmental disorders. The SHANK genes and the schizophrenia-associated microRNA-137 show convergence on several levels, as they are both expressed at the synapse, influence neuronal development, and have a strong link to neurodevelopmental and neuropsychiatric disorders like intellectual disability, autism, and schizophrenia. This compiled evidence raised the question if the SHANKs might be targets of miR-137. METHODS In silico analysis revealed a putative binding site for microRNA-137 (miR-137) in the SHANK2 3'UTR, while this was not the case for SHANK1 and SHANK3. Luciferase reporter assays were performed by overexpressing wild type and mutated SHANK2-3'UTR and miR-137 in human neuroblastoma cells and mouse primary hippocampal neurons. miR-137 was also overexpressed or inhibited in hippocampal neurons, and Shank2 expression was analyzed by quantitative real-time PCR and Western blot. Additionally, expression levels of experimentally validated miR-137 target genes were analyzed in the dorsolateral prefrontal cortex (DLPFC) of schizophrenia and control individuals using the RNA-Seq data from the CommonMind Consortium. RESULTS miR-137 directly targets the 3'UTR of SHANK2 in a site-specific manner. Overexpression of miR-137 in mouse primary hippocampal neurons significantly lowered endogenous Shank2 protein levels without detectable influence on mRNA levels. Conversely, miR-137 inhibition increased Shank2 protein expression, indicating that miR-137 regulates SHANK2 expression by repressing protein translation rather than inducing mRNA degradation. To find out if the miR-137 signaling network is altered in schizophrenia, we compared miR-137 precursor and miR-137 target gene expression in the DLPFC of schizophrenia and control individuals using the CommonMind Consortium RNA sequencing data. Differential expression of 23% (16/69) of known miR-137 target genes was detected in the DLPFC of schizophrenia individuals compared with controls. We propose that in further targets (e.g., SHANK2, as described in this paper) which are not regulated on RNA level, effects may only be detectable on protein level. CONCLUSION Our study provides evidence that a direct regulatory link exists between miR-137 and SHANK2 and supports the finding that miR-137 signaling might be altered in schizophrenia.
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Affiliation(s)
| | - Simone Berkel
- Institute of Human Genetics, Ruprecht-Karls-University, Heidelberg, Germany
| | | | - Christine Fischer
- Institute of Human Genetics, Ruprecht-Karls-University, Heidelberg, Germany
| | - Gudrun A. Rappold
- Institute of Human Genetics, Ruprecht-Karls-University, Heidelberg, Germany
- Interdisciplinary Center for Neurosciences (IZN), Ruprecht-Karls-University, Heidelberg, Germany
- Department of Human Molecular Genetics, Institute of Human Genetics, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany
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49
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Bhargav DS, Sreedevi N, Swapna N, Vivek S, Kovvali S. Whole exome sequencing identifies a novel homozygous frameshift mutation in the ASPM gene, which causes microcephaly 5, primary, autosomal recessive. F1000Res 2017; 6:2163. [PMID: 29375817 PMCID: PMC5770997 DOI: 10.12688/f1000research.12102.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/15/2017] [Indexed: 12/20/2022] Open
Abstract
Microcephaly is a genetically heterogeneous disorder and is one of the frequently notable conditions in paediatric neuropathology which exists either as a single entity or in association with other co-morbidities. More than a single gene is implicated in true microcephaly and the list is growing with the recent advancements in sequencing technologies. Using massive parallel sequencing, we identified a novel frame shift insertion in the abnormal spindle-like microcephaly-associated protein gene in a client with true autosomal recessive primary microcephaly. Exome sequencing in the present case helped in identifying the true cause behind the disease, which helps in the premarital counselling for the sibling to avoid future recurrence of the disorder in the family.
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Affiliation(s)
| | - N Sreedevi
- Department of Clinical Services, All India Institute of Speech and Hearing, Manasagangothri, India
| | - N Swapna
- Department of Speech Language Pathology, All India Institute of Speech and Hearing, Manasagangothri, India
| | - Soumya Vivek
- Unit for Human Genetics, All India Institute of Speech and Hearing, Manasagangothri, India
| | - Srinivas Kovvali
- Unit for Human Genetics, All India Institute of Speech and Hearing, Manasagangothri, India
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50
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A novel homozygous frameshift variant in the MCPH1 gene causes primary microcephaly in a consanguineous Saudi family. Genes Genomics 2017. [DOI: 10.1007/s13258-017-0596-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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