1
|
Liu RH, Wang XY, Jia YY, Wang XC, Xia M, Nie Q, Guo J, Kong QX. Compound heterozygous mutations in tripeptidyl peptidase 1 cause rare autosomal recessive spinocerebellar ataxia type 7: A case report. World J Clin Cases 2023; 11:6618-6623. [PMID: 37900245 PMCID: PMC10601013 DOI: 10.12998/wjcc.v11.i27.6618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/15/2023] [Accepted: 08/23/2023] [Indexed: 09/20/2023] Open
Abstract
BACKGROUND Spinocerebellar ataxia recessive type 7 (SCAR7) is a rare clinical manifestation beginning in childhood or adolescence. SCAR7 is caused by tripeptidyl peptidase 1 (TPP1) gene mutations, and presents with cerebellar ataxia, pyramidal signs, neurocognitive impairment, deep paresthesia, and cerebellar atrophy. CASE SUMMARY Here, we describe a 25-year-old female patient in China who presented with increasing difficulty walking, falling easily, shaking limbs, instability holding items, slurred speech, coughing when drinking, palpitations, and frequent hunger and overeating. Magnetic resonance imaging showed cerebellar atrophy. Whole exome sequencing detected two compound heterozygous mutations in the TPP1 gene: c.1468G>A p.Glu490Lys and c.1417G>A p.Gly473Arg. Considering the patient's clinical presentation and genetic test results, we hypothesized that complex heterozygous mutations cause TPP1 enzyme deficiency, which may lead to SCAR7. CONCLUSION We report the first case of SCAR7 from China. We also identify novel compound heterozygous mutations in the TPP1 gene associated with SCAR7, expanding the range of known disease-causing mutations for SCAR7.
Collapse
Affiliation(s)
- Rui-Han Liu
- Department of Pediatrics, Affiliated Hospital of Jining Medical University, Jining 272000, Shandong Province, China
- College of TCM, Shandong University of Traditional Chinese Medicine, Jinan 250012, Shandong Province, China
| | - Xin-Yu Wang
- Clinical Medical College, Jining Medical University, Jining 272000, Shandong Province, China
| | - Yuan-Yuan Jia
- Department of Neurology, Affiliated Hospital of Jining Medical University, Jining 272000, Shandong Province, China
| | - Xing-Chen Wang
- Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong Province, China
| | - Min Xia
- Department of Neurology, Affiliated Hospital of Jining Medical University, Jining 272000, Shandong Province, China
| | - Qiong Nie
- Clinical Medical College, Jining Medical University, Jining 272000, Shandong Province, China
| | - Jia Guo
- Clinical Medical College, Jining Medical University, Jining 272000, Shandong Province, China
| | - Qing-Xia Kong
- Department of Neurology, Affiliated Hospital of Jining Medical University, Jining 272000, Shandong Province, China
| |
Collapse
|
2
|
Leal AF, Fnu N, Benincore-Flórez E, Herreño-Pachón AM, Echeverri-Peña OY, Alméciga-Díaz CJ, Tomatsu S. The landscape of CRISPR/Cas9 for inborn errors of metabolism. Mol Genet Metab 2023; 138:106968. [PMID: 36525790 DOI: 10.1016/j.ymgme.2022.106968] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 12/03/2022] [Accepted: 12/04/2022] [Indexed: 12/12/2022]
Abstract
Since its discovery as a genome editing tool, the clustered regularly interspaced short palindromic repeats and CRISPR-associated protein 9 (CRISPR/Cas9) system has opened new horizons in the diagnosis, research, and treatment of genetic diseases. CRISPR/Cas9 can rewrite the genome at any region with outstanding precision to modify it and further instructions for gene expression. Inborn Errors of Metabolism (IEM) are a group of more than 1500 diseases produced by mutations in genes encoding for proteins that participate in metabolic pathways. IEM involves small molecules, energetic deficits, or complex molecules diseases, which may be susceptible to be treated with this novel tool. In recent years, potential therapeutic approaches have been attempted, and new models have been developed using CRISPR/Cas9. In this review, we summarize the most relevant findings in the scientific literature about the implementation of CRISPR/Cas9 in IEM and discuss the future use of CRISPR/Cas9 to modify epigenetic markers, which seem to play a critical role in the context of IEM. The current delivery strategies of CRISPR/Cas9 are also discussed.
Collapse
Affiliation(s)
- Andrés Felipe Leal
- Institute for the Study of Inborn Errors of Metabolism, Faculty of Science, Pontificia Universidad Javeriana, Bogotá, Colombia; Nemours/Alfred I. duPont Hospital for Children, Wilmington, DE, USA
| | - Nidhi Fnu
- Nemours/Alfred I. duPont Hospital for Children, Wilmington, DE, USA; University of Delaware, Newark, DE, USA
| | | | | | - Olga Yaneth Echeverri-Peña
- Institute for the Study of Inborn Errors of Metabolism, Faculty of Science, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Carlos Javier Alméciga-Díaz
- Institute for the Study of Inborn Errors of Metabolism, Faculty of Science, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Shunji Tomatsu
- Nemours/Alfred I. duPont Hospital for Children, Wilmington, DE, USA; University of Delaware, Newark, DE, USA; Department of Pediatrics, Graduate School of Medicine, Gifu University, Gifu, Japan; Department of Pediatrics, Thomas Jefferson University, Philadelphia, PA, USA.
| |
Collapse
|
3
|
Pascual-Torner M, Carrero D, Pérez-Silva JG, Álvarez-Puente D, Roiz-Valle D, Bretones G, Rodríguez D, Maeso D, Mateo-González E, Español Y, Mariño G, Acuña JL, Quesada V, López-Otín C. Comparative genomics of mortal and immortal cnidarians unveils novel keys behind rejuvenation. Proc Natl Acad Sci U S A 2022; 119:e2118763119. [PMID: 36037356 PMCID: PMC9459311 DOI: 10.1073/pnas.2118763119] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 07/06/2022] [Indexed: 12/13/2022] Open
Abstract
Turritopsis dohrnii is the only metazoan able to rejuvenate repeatedly after its medusae reproduce, hinting at biological immortality and challenging our understanding of aging. We present and compare whole-genome assemblies of T. dohrnii and the nonimmortal Turritopsis rubra using automatic and manual annotations, together with the transcriptome of life cycle reversal (LCR) process of T. dohrnii. We have identified variants and expansions of genes associated with replication, DNA repair, telomere maintenance, redox environment, stem cell population, and intercellular communication. Moreover, we have found silencing of polycomb repressive complex 2 targets and activation of pluripotency targets during LCR, which points to these transcription factors as pluripotency inducers in T. dohrnii. Accordingly, we propose these factors as key elements in the ability of T. dohrnii to undergo rejuvenation.
Collapse
Affiliation(s)
- Maria Pascual-Torner
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología, Ciberonc, Universidad de Oviedo, Oviedo, 33006, Spain
- Observatorio Marino de Asturias, Departamento de Biología de Organismos y Sistemas, Universidad de Oviedo, Oviedo, 33006, Spain
| | - Dido Carrero
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología, Ciberonc, Universidad de Oviedo, Oviedo, 33006, Spain
| | - José G. Pérez-Silva
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología, Ciberonc, Universidad de Oviedo, Oviedo, 33006, Spain
| | - Diana Álvarez-Puente
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología, Ciberonc, Universidad de Oviedo, Oviedo, 33006, Spain
| | - David Roiz-Valle
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología, Ciberonc, Universidad de Oviedo, Oviedo, 33006, Spain
| | - Gabriel Bretones
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología, Ciberonc, Universidad de Oviedo, Oviedo, 33006, Spain
| | - David Rodríguez
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología, Ciberonc, Universidad de Oviedo, Oviedo, 33006, Spain
| | - Daniel Maeso
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología, Ciberonc, Universidad de Oviedo, Oviedo, 33006, Spain
| | - Elena Mateo-González
- Observatorio Marino de Asturias, Departamento de Biología de Organismos y Sistemas, Universidad de Oviedo, Oviedo, 33006, Spain
| | - Yaiza Español
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología, Ciberonc, Universidad de Oviedo, Oviedo, 33006, Spain
| | - Guillermo Mariño
- Departamento de Biología Funcional, Facultad de Medicina, Universidad de Oviedo, Oviedo, 33006, Spain
- Autophagy and Metabolism Lab, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, 33011, Spain
| | - José Luis Acuña
- Observatorio Marino de Asturias, Departamento de Biología de Organismos y Sistemas, Universidad de Oviedo, Oviedo, 33006, Spain
| | - Víctor Quesada
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología, Ciberonc, Universidad de Oviedo, Oviedo, 33006, Spain
| | - Carlos López-Otín
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología, Ciberonc, Universidad de Oviedo, Oviedo, 33006, Spain
| |
Collapse
|
4
|
Simonati A, Williams RE. Neuronal Ceroid Lipofuscinosis: The Multifaceted Approach to the Clinical Issues, an Overview. Front Neurol 2022; 13:811686. [PMID: 35359645 PMCID: PMC8961688 DOI: 10.3389/fneur.2022.811686] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 01/11/2022] [Indexed: 01/04/2023] Open
Abstract
The main aim of this review is to summarize the current state-of-art in the field of childhood Neuronal Ceroid Lipofuscinosis (NCL), a group of rare neurodegenerative disorders. These are genetic diseases associated with the formation of toxic endo-lysosomal storage. Following a brief historical review of the evolution of NCL definition, a clinically-oriented approach is used describing how the early symptoms and signs affecting motor, visual, cognitive domains, and including seizures, may lead clinicians to a rapid molecular diagnosis, avoiding the long diagnostic odyssey commonly observed. We go on to focus on recent advances in NCL research and summarize contributions to knowledge of the pathogenic mechanisms underlying NCL. We describe the large variety of experimental models which have aided this research, as well as the most recent technological developments which have shed light on the main mechanisms involved in the cellular pathology, such as apoptosis and autophagy. The search for innovative therapies is described. Translation of experimental data into therapeutic approaches is being established for several of the NCLs, and one drug is now commercially available. Lastly, we show the importance of palliative care and symptomatic treatments which are still the main therapeutic interventions.
Collapse
Affiliation(s)
- Alessandro Simonati
- Departments of Surgery, Dentistry, Paediatrics, and Gynaecology, School of Medicine, University of Verona, Verona, Italy
- Department of Clinical Neuroscience, AOUI-VR, Verona, Italy
- *Correspondence: Alessandro Simonati
| | - Ruth E. Williams
- Department of Children's Neuroscience, Evelina London Children's Hospital, London, United Kingdom
- Ruth E. Williams
| |
Collapse
|
5
|
Storey CL, Williams RSB, Fisher PR, Annesley SJ. Dictyostelium discoideum: A Model System for Neurological Disorders. Cells 2022; 11:cells11030463. [PMID: 35159273 PMCID: PMC8833889 DOI: 10.3390/cells11030463] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 01/23/2022] [Accepted: 01/24/2022] [Indexed: 12/14/2022] Open
Abstract
Background: The incidence of neurological disorders is increasing due to population growth and extended life expectancy. Despite advances in the understanding of these disorders, curative strategies for treatment have not yet eventuated. In part, this is due to the complexities of the disorders and a lack of identification of their specific underlying pathologies. Dictyostelium discoideum has provided a useful, simple model to aid in unraveling the complex pathological characteristics of neurological disorders including Alzheimer’s disease, Parkinson’s disease, Huntington’s disease, neuronal ceroid lipofuscinoses and lissencephaly. In addition, D. discoideum has proven to be an innovative model for pharmaceutical research in the neurological field. Scope of review: This review describes the contributions of D. discoideum in the field of neurological research. The continued exploration of proteins implicated in neurological disorders in D. discoideum may elucidate their pathological roles and fast-track curative therapeutics.
Collapse
Affiliation(s)
- Claire Louise Storey
- Department of Microbiology, Anatomy, Physiology and Pharmacology, La Trobe University, Bundoora 3086, Australia; (C.L.S.); (P.R.F.)
| | - Robin Simon Brooke Williams
- Centre for Biomedical Sciences, School of Biological Sciences, Royal Holloway University of London, Egham TW20 0EX, UK;
| | - Paul Robert Fisher
- Department of Microbiology, Anatomy, Physiology and Pharmacology, La Trobe University, Bundoora 3086, Australia; (C.L.S.); (P.R.F.)
| | - Sarah Jane Annesley
- Department of Microbiology, Anatomy, Physiology and Pharmacology, La Trobe University, Bundoora 3086, Australia; (C.L.S.); (P.R.F.)
- Correspondence: ; Tel.: +61-394-791-412
| |
Collapse
|