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Iglesias Pastrana C, Navas González FJ, Macri M, Martínez Martínez MDA, Ciani E, Delgado Bermejo JV. Identification of novel genetic loci related to dromedary camel (Camelus dromedarius) morphometrics, biomechanics, and behavior by genome-wide association studies. BMC Vet Res 2024; 20:418. [PMID: 39294626 DOI: 10.1186/s12917-024-04263-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2024] [Accepted: 09/03/2024] [Indexed: 09/21/2024] Open
Abstract
In the realm of animal breeding for sustainability, domestic camels have traditionally been valued for their milk and meat production. However, key aspects such as zoometrics, biomechanics, and behavior have often been overlooked in terms of their genetic foundations. Recognizing this gap, the present study perfomed genome-wide association analyses to identify genetic markers associated with zoometrics-, biomechanics-, and behavior-related traits in dromedary camels (Camelus dromedarius). 16 and 108 genetic markers were significantly associated (q < 0.05) at genome and chromosome-wide levels of significance, respectively, with zoometrics- (width, length, and perimeter/girth), biomechanics- (acceleration, displacement, spatial position, and velocity), and behavior-related traits (general cognition, intelligence, and Intelligence Quotient (IQ)) in dromedaries. In most association loci, the nearest protein-coding genes are linkedto neurodevelopmental and sensory disorders. This suggests that genetic variations related to neural development and sensory perception play crucial roles in shaping a dromedary camel's physical characteristics and behavior. In summary, this research advances our understanding of the genomic basis of essential traits in dromedary camels. Identifying specific genetic markers associated with zoometrics, biomechanics, and behavior provides valuable insights into camel domestication. Moreover, the links between these traits and genes related to neurodevelopmental and sensory disorders highlight the broader implications of domestication and modern selection on the health and welfare of dromedary camels. This knowledge could guide future breeding strategies, fostering a more holistic approach to camel husbandry and ensuring the sustainability of these animals in diverse agricultural contexts.
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Affiliation(s)
| | | | - Martina Macri
- Department of Genetics, Faculty of Veterinary Sciences, University of Córdoba, Córdoba, Spain
- Animal Breeding Consulting S.L, Parque Científico Tecnológico de Córdoba, Córdoba, Spain
| | | | - Elena Ciani
- Department of Biosciences, Biotechnologies and Environment, Faculty of Veterinary Sciences, University of Bari 'Aldo Moro', Bari, Italy
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Yoshioka N, Kurose M, Sano H, Tran DM, Chiken S, Tainaka K, Yamamura K, Kobayashi K, Nambu A, Takebayashi H. Sensory-motor circuit is a therapeutic target for dystonia musculorum mice, a model of hereditary sensory and autonomic neuropathy 6. SCIENCE ADVANCES 2024; 10:eadj9335. [PMID: 39058787 PMCID: PMC11277474 DOI: 10.1126/sciadv.adj9335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Accepted: 06/25/2024] [Indexed: 07/28/2024]
Abstract
Mutations in Dystonin (DST), which encodes cytoskeletal linker proteins, cause hereditary sensory and autonomic neuropathy 6 (HSAN-VI) in humans and the dystonia musculorum (dt) phenotype in mice; however, the neuronal circuit underlying the HSAN-VI and dt phenotype is unresolved. dt mice exhibit dystonic movements accompanied by the simultaneous contraction of agonist and antagonist muscles and postnatal lethality. Here, we identified the sensory-motor circuit as a major causative neural circuit using a gene trap system that enables neural circuit-selective inactivation and restoration of Dst by Cre-mediated recombination. Sensory neuron-selective Dst deletion led to motor impairment, degeneration of proprioceptive sensory neurons, and disruption of the sensory-motor circuit. Restoration of Dst expression in sensory neurons using Cre driver mice or a single postnatal injection of Cre-expressing adeno-associated virus ameliorated sensory degeneration and improved abnormal movements. These findings demonstrate that the sensory-motor circuit is involved in the movement disorders in dt mice and that the sensory circuit is a therapeutic target for HSAN-VI.
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Affiliation(s)
- Nozomu Yoshioka
- Division of Neurobiology and Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
- Transdisciplinary Research Programs, Niigata University, Niigata, Japan
| | - Masayuki Kurose
- Department of Physiology, School of Dentistry, Iwate Medical University, Yahaba, Japan
- Division of Oral Physiology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Hiromi Sano
- Division of System Neurophysiology, National Institute for Physiological Sciences, Okazaki, Japan
- Physiological Sciences, SOKENDAI, Okazaki, Japan
- Division of Behavioral Neuropharmacology, International Center for Brain Science, Fujita Health University, Toyoake, Japan
| | - Dang Minh Tran
- Division of Neurobiology and Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Satomi Chiken
- Division of System Neurophysiology, National Institute for Physiological Sciences, Okazaki, Japan
- Physiological Sciences, SOKENDAI, Okazaki, Japan
| | - Kazuki Tainaka
- Department of System Pathology for Neurological Disorders, Brain Research Institute, Niigata University, Niigata, Japan
| | - Kensuke Yamamura
- Division of Oral Physiology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Kenta Kobayashi
- Section of Viral Vector Development, National Institute for Physiological Sciences, Okazaki, Japan
| | - Atsushi Nambu
- Division of System Neurophysiology, National Institute for Physiological Sciences, Okazaki, Japan
- Physiological Sciences, SOKENDAI, Okazaki, Japan
| | - Hirohide Takebayashi
- Division of Neurobiology and Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
- Center for Coordination of Research Facilities, Niigata University, Niigata, Japan
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3
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Yoshioka N. Roles of dystonin isoforms in the maintenance of neural, muscle, and cutaneous tissues. Anat Sci Int 2024; 99:7-16. [PMID: 37603210 DOI: 10.1007/s12565-023-00739-1] [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: 05/31/2023] [Accepted: 08/03/2023] [Indexed: 08/22/2023]
Abstract
Dystonin (DST), also known as bullous pemphigoid antigen 1 (BPAG1), encodes cytoskeletal linker proteins belonging to the plakin family. The DST gene produces several isoforms, including DST-a, DST-b, and DST-e, which are expressed in neural, muscle, and cutaneous tissues, respectively. Pathogenic DST mutations cause hereditary sensory and autonomic neuropathy type 6 (HSAN-VI) and epidermolysis bullosa simplex (EBS); therefore, it is important to elucidate the roles of DST isoforms in multiple organs. Recently, we have used several Dst mutant mouse strains, in which the expression of Dst isoforms is disrupted in distinct patterns, to gain new insight into how DST functions in multiple tissues. This review provides an overview of the roles played by tissue-specific DST isoforms in neural, muscle, and cutaneous tissues.
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Affiliation(s)
- Nozomu Yoshioka
- Division of Neurobiology and Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, 1-757 Asahimachi, Chuo-ku, Niigata, 951-8510, Japan.
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4
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Lalonde R, Strazielle C. The DST gene in neurobiology. J Neurogenet 2023; 37:131-138. [PMID: 38465459 DOI: 10.1080/01677063.2024.2319880] [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: 09/07/2023] [Accepted: 02/13/2024] [Indexed: 03/12/2024]
Abstract
DST is a gene whose alternative splicing yields epithelial, neuronal, and muscular isoforms. The autosomal recessive Dstdt (dystonia musculorum) spontaneous mouse mutation causes degeneration of spinocerebellar tracts as well as peripheral sensory nerves, dorsal root ganglia, and cranial nerve ganglia. In addition to Dstdt mutants, axonopathy and neurofilament accumulation in perikarya are features of two other murine lines with spontaneous Dst mutations, targeted Dst knockout mice, DstTg4 transgenic mice carrying two deleted Dst exons, DstGt mice with trapped actin-binding domain-containing isoforms, and conditional Schwann cell-specific Dst knockout mice. As a result of nerve damage, Dstdt mutants display dystonia and ataxia, as seen in several genetically modified models and their motor coordination deficits have been quantified along with the spontaneous Dst nonsense mutant, the conditional Schwann cell-specific Dst knockout, the conditional DstGt mutant, and the Dst-b isoform specific Dst mutant. Recent findings in humans have associated DST mutations of the Dst-b isoform with hereditary sensory and autonomic neuropathies type 6 (HSAN-VI). These data should further encourage the development of genetic techniques to treat or prevent ataxic and dystonic symptoms.
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Affiliation(s)
- Robert Lalonde
- Université de Lorraine, Laboratoire Stress, Immunité, Pathogènes (EA7300), Faculté de Médecine, Vandœuvre-les-Nancy, France
| | - Catherine Strazielle
- Université de Lorraine, Laboratoire Stress, Immunité, Pathogènes (EA7300), Faculté de Médecine, Vandœuvre-les-Nancy, France
- CHRU Nancy, Vandœuvre-les-Nancy, France
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5
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Yoshioka N, Kurose M, Yano M, Tran DM, Okuda S, Mori-Ochiai Y, Horie M, Nagai T, Nishino I, Shibata S, Takebayashi H. Isoform-specific mutation in Dystonin-b gene causes late-onset protein aggregate myopathy and cardiomyopathy. eLife 2022; 11:78419. [PMID: 35942699 PMCID: PMC9365387 DOI: 10.7554/elife.78419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 07/18/2022] [Indexed: 12/03/2022] Open
Abstract
Dystonin (DST), which encodes cytoskeletal linker proteins, expresses three tissue-selective isoforms: neural DST-a, muscular DST-b, and epithelial DST-e. DST mutations cause different disorders, including hereditary sensory and autonomic neuropathy 6 (HSAN-VI) and epidermolysis bullosa simplex; however, etiology of the muscle phenotype in DST-related diseases has been unclear. Because DST-b contains all of the DST-a-encoding exons, known HSAN-VI mutations could affect both DST-a and DST-b isoforms. To investigate the specific function of DST-b in striated muscles, we generated a Dst-b-specific mutant mouse model harboring a nonsense mutation. Dst-b mutant mice exhibited late-onset protein aggregate myopathy and cardiomyopathy without neuropathy. We observed desmin aggregation, focal myofibrillar dissolution, and mitochondrial accumulation in striated muscles, which are common characteristics of myofibrillar myopathy. We also found nuclear inclusions containing p62, ubiquitin, and SUMO proteins with nuclear envelope invaginations as a unique pathological hallmark in Dst-b mutation-induced cardiomyopathy. RNA-sequencing analysis revealed changes in expression of genes responsible for cardiovascular functions. In silico analysis identified DST-b alleles with nonsense mutations in populations worldwide, suggesting that some unidentified hereditary myopathy and cardiomyopathy are caused by DST-b mutations. Here, we demonstrate that the Dst-b isoform is essential for long-term maintenance of striated muscles.
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Affiliation(s)
- Nozomu Yoshioka
- Division of Neurobiology and Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan.,Transdisciplinary Research Programs, Niigata University, Niigata, Japan
| | - Masayuki Kurose
- Department of Physiology, School of Dentistry, Iwate Medical University, Iwate, Japan
| | - Masato Yano
- Division of Neurobiology and Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Dang Minh Tran
- Division of Neurobiology and Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Shujiro Okuda
- Medical AI Center, School of Medicine, Niigata University, Niigata, Japan
| | - Yukiko Mori-Ochiai
- Division of Neurobiology and Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Masao Horie
- Department of Nursing, Niigata College of Nursing, Jōetsu, Japan
| | - Toshihiro Nagai
- Electron Microscope Laboratory, Keio University, Tokyo, Japan
| | - Ichizo Nishino
- Department of Neuromuscular Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Shinsuke Shibata
- Electron Microscope Laboratory, Keio University, Tokyo, Japan.,Division of Microscopic Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Hirohide Takebayashi
- Division of Neurobiology and Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan.,Center for Coordination of Research Facilities, Niigata University, Niigata, Japan
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6
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Epidermolysis Bullosa—A Different Genetic Approach in Correlation with Genetic Heterogeneity. Diagnostics (Basel) 2022; 12:diagnostics12061325. [PMID: 35741135 PMCID: PMC9222206 DOI: 10.3390/diagnostics12061325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 05/23/2022] [Accepted: 05/25/2022] [Indexed: 11/17/2022] Open
Abstract
Epidermolysis bullosa is a heterogeneous group of rare genetic disorders characterized by mucocutaneous fragility and blister formation after minor friction or trauma. There are four major epidermolysis bullosa types based on the ultrastructural level of tissue cleavage: simplex, junctional, dystrophic, and Kindler epidermolysis bullosa. They are caused by mutations in genes that encode the proteins that are part of the hemidesmosomes and focal adhesion complex. Some of these disorders can be associated with extracutaneous manifestations, which are sometimes fatal. They are inherited in an autosomal recessive or autosomal dominant manner. This review is focused on the phenomena of heterogeneity (locus, allelic, mutational, and clinical) in epidermolysis bullosa, and on the correlation genotype–phenotype.
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Cusseddu R, Robert A, Côté JF. Strength Through Unity: The Power of the Mega-Scaffold MACF1. Front Cell Dev Biol 2021; 9:641727. [PMID: 33816492 PMCID: PMC8012552 DOI: 10.3389/fcell.2021.641727] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 02/23/2021] [Indexed: 12/26/2022] Open
Abstract
The tight coordination of diverse cytoskeleton elements is required to support several dynamic cellular processes involved in development and tissue homeostasis. The spectraplakin-family of proteins are composed of multiple domains that provide versatility to connect different components of the cytoskeleton, including the actin microfilaments, microtubules and intermediates filaments. Spectraplakins act as orchestrators of precise cytoskeletal dynamic events. In this review, we focus on the prototypical spectraplakin MACF1, a protein scaffold of more than 700 kDa that coordinates the crosstalk between actin microfilaments and microtubules to support cell-cell connections, cell polarity, vesicular transport, proliferation, and cell migration. We will review over two decades of research aimed at understanding the molecular, physiological and pathological roles of MACF1, with a focus on its roles in developmental and cancer. A deeper understanding of MACF1 is currently limited by technical challenges associated to the study of such a large protein and we discuss ideas to advance the field.
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Affiliation(s)
- Rebecca Cusseddu
- Montreal Clinical Research Institute, Montreal, QC, Canada
- Molecular Biology Programs, Université de Montréal, Montreal, QC, Canada
| | - Amélie Robert
- Montreal Clinical Research Institute, Montreal, QC, Canada
| | - Jean-François Côté
- Montreal Clinical Research Institute, Montreal, QC, Canada
- Molecular Biology Programs, Université de Montréal, Montreal, QC, Canada
- Department of Medicine, Université de Montréal, Montreal, QC, Canada
- Department of Biochemistry and Molecular Medicine, Université de Montréal, Montreal, QC, Canada
- Department of Anatomy and Cell Biology, McGill University, Montreal, QC, Canada
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8
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Lynch-Godrei A, Repentigny YD, Ferrier A, Gagnon S, Kothary R. Dystonin loss-of-function leads to impaired autophagosome-endolysosome pathway dynamics. Biochem Cell Biol 2020; 99:364-373. [PMID: 33347391 DOI: 10.1139/bcb-2020-0557] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The neuronal dystonin protein (DST-a) is a large cytoskeletal linker important for integrating the various components of the cytoskeleton. Recessive Dst mutations lead to a sensory neuropathy in mice, known as dystonia musculorum (Dstdt). The disease is characterized by ataxia, autonomic disturbances, and ultimately, death, which are associated with massive degeneration of the sensory neurons in the dorsal root ganglion (DRG). Recent investigation of Dstdt sensory neurons revealed an accumulation of autophagosomes and a disruption in autophagic flux, which was believed to be due to insufficient availability of motor protein. Motor protein levels and the endolysosomal pathway were assessed in pre-symptomatic (postnatal day 5; P5) and symptomatic (P15) stage wild-type and Dstdt DRGs. Levels of mRNA encoding molecular motors were reduced, although no significant reduction in the protein level was detected. An increase in lysosomal marker LAMP1 in medium-large size Dstdt-27J sensory neurons was observed, along with an accumulation of electron-light single-membraned vesicles in Dstdt-27J DRG tissue at the late stages of disease. These vesicles are likely to have been autolysosomes, and their presence in only late-stage Dstdt-27J sensory neurons is suggestive of a pathological defect in autophagy. Further investigation is necessary to confirm vesicle identity, and to determine the role of Dst-a in normal autophagic flux.
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Affiliation(s)
- Anisha Lynch-Godrei
- Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON K1H 8L6, Canada.,Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - Yves De Repentigny
- Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON K1H 8L6, Canada
| | - Andrew Ferrier
- Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON K1H 8L6, Canada.,Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - Sabrina Gagnon
- Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON K1H 8L6, Canada
| | - Rashmi Kothary
- Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON K1H 8L6, Canada.,Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada.,Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada.,Department of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada.,Centre for Neuromuscular Disease, University of Ottawa, ON K1H 8M5, Canada
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Motley WW, Züchner S, Scherer SS. Isoform-specific loss of dystonin causes hereditary motor and sensory neuropathy. NEUROLOGY-GENETICS 2020; 6:e496. [PMID: 32802955 PMCID: PMC7413632 DOI: 10.1212/nxg.0000000000000496] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Accepted: 05/28/2020] [Indexed: 11/24/2022]
Abstract
Objective To determine the genetic cause of axonal Charcot-Marie-Tooth disease in a small family with 2 affected siblings, one of whom had cerebellar features on examination. Methods Whole-exome sequencing of genomic DNA and analysis for recessively inherited mutations; PCR-based messenger RNA/complementary DNA analysis of transcripts to characterize the effects of variants identified by exome sequencing. Results We identified compound heterozygous mutations in dystonin (DST), which is alternatively spliced to create many plakin family linker proteins (named the bullous pemphigoid antigen 1 [BPAG1] proteins) that function to bridge cytoskeletal filament networks. One mutation (c.250C>T) is predicted to cause a nonsense mutation (p.R84X) that only affects isoform 2 variants, which have an N-terminal transmembrane domain; the other (c.8283+1G>A) mutates a consensus splice donor site and results in a 22 amino acid in-frame deletion in the spectrin repeat domain of all BPAG1a and BPAG1b isoforms. Conclusions These findings introduce a novel human phenotype, axonal Charcot-Marie-Tooth, of recessive DST mutations, and provide further evidence that BPAG1 plays an essential role in axonal health.
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Affiliation(s)
- William W Motley
- Department of Neurology (W.W.M., S.S.S.), Perelman School of Medicine, University of Pennsylvania, Philadelphia; and Department of Human Genetics (S.Z.), Hussman Institute for Human Genomics, University of Miami, FL
| | - Stephan Züchner
- Department of Neurology (W.W.M., S.S.S.), Perelman School of Medicine, University of Pennsylvania, Philadelphia; and Department of Human Genetics (S.Z.), Hussman Institute for Human Genomics, University of Miami, FL
| | - Steven S Scherer
- Department of Neurology (W.W.M., S.S.S.), Perelman School of Medicine, University of Pennsylvania, Philadelphia; and Department of Human Genetics (S.Z.), Hussman Institute for Human Genomics, University of Miami, FL
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Jin JY, Wu PF, He JQ, Fan LL, Yuan ZZ, Pang XY, Tang JY, Zhang LY. Novel Compound Heterozygous DST Variants Causing Hereditary Sensory and Autonomic Neuropathies VI in Twins of a Chinese Family. Front Genet 2020; 11:492. [PMID: 32528525 PMCID: PMC7262964 DOI: 10.3389/fgene.2020.00492] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 04/20/2020] [Indexed: 11/27/2022] Open
Abstract
Background: Hereditary sensory and autonomic neuropathies (HSANs) are a rare and severe group of sensory axonal neuropathies. HSANs have been classified into eight groups based on mode of inheritance, clinical features, and the involved genes. HSAN-VI, perhaps the most notable type, is an autosomal recessive disease, which manifests as the severely impaired pain sensitivity, autonomic disturbances, distal myopathy, spontaneous or surgical amputations, and sometimes early death. Mutations in DST have been identified as the cause of HSAN-VI. DST encodes dystonin, a member of the plakin protein family that is involved in cytoskeletal filament networks. Dystonin has seven major isoforms in nerve, muscle, and epithelium. Material and Methods: The present study investigated a Chinese family with HSAN and explored potential pathogenic variants using whole-exome sequencing (WES). Variants were screened and filtered through bioinformatics analysis and prediction of variant pathogenicity. Co-segregation analysis was subsequently conducted. Results: We identified compound heterozygous variants of DST (c.3304G>A, p.V1102I and c.13796G>A, p.R4599H) in two patients. Conclusion: We reported on a Chinese family with HSAN-VI family and detected the disease-causing variants. Our description expands the spectrum of known DST variants and contributes to the clinical diagnosis of HSAN-VI.
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Affiliation(s)
- Jie-Yuan Jin
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, China.,Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China.,School of Life Sciences, Central South University, Changsha, China
| | - Pan-Feng Wu
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, China
| | - Ji-Qiang He
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, China
| | - Liang-Liang Fan
- School of Life Sciences, Central South University, Changsha, China.,Human Key Laboratory of Animal Models for Human Diseases, School of Life Sciences, Central South University, Changsha, China
| | | | - Xiao-Yang Pang
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, China
| | - Ju-Yu Tang
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, China
| | - Li-Yang Zhang
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China.,School of Life Sciences, Central South University, Changsha, China
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11
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Yoshioka N, Kabata Y, Kuriyama M, Bizen N, Zhou L, Tran DM, Yano M, Yoshiki A, Ushiki T, Sproule TJ, Abe R, Takebayashi H. Diverse dystonin gene mutations cause distinct patterns of Dst isoform deficiency and phenotypic heterogeneity in Dystonia musculorum mice. Dis Model Mech 2020; 13:dmm041608. [PMID: 32482619 PMCID: PMC7325434 DOI: 10.1242/dmm.041608] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 03/11/2020] [Indexed: 02/02/2023] Open
Abstract
Loss-of-function mutations in dystonin (DST) can cause hereditary sensory and autonomic neuropathy type 6 (HSAN-VI) or epidermolysis bullosa simplex (EBS). Recently, DST-related diseases were recognized to be more complex than previously thought because a patient exhibited both neurological and skin manifestations, whereas others display only one or the other. A single DST locus produces at least three major DST isoforms: DST-a (neuronal isoform), DST-b (muscular isoform) and DST-e (epithelial isoform). Dystonia musculorum (dt) mice, which have mutations in Dst, were originally identified as spontaneous mutants displaying neurological phenotypes. To reveal the mechanisms underlying the phenotypic heterogeneity of DST-related diseases, we investigated two mutant strains with different mutations: a spontaneous Dst mutant (Dstdt-23Rbrc mice) and a gene-trap mutant (DstGt mice). The Dstdt-23Rbrc allele possesses a nonsense mutation in an exon shared by all Dst isoforms. The DstGt allele is predicted to inactivate Dst-a and Dst-b isoforms but not Dst-e There was a decrease in the levels of Dst-a mRNA in the neural tissue of both Dstdt-23Rbrc and DstGt homozygotes. Loss of sensory and autonomic nerve ends in the skin was observed in both Dstdt-23Rbrc and DstGt mice at postnatal stages. In contrast, Dst-e mRNA expression was reduced in the skin of Dstdt-23Rbrc mice but not in DstGt mice. Expression levels of Dst proteins in neural and cutaneous tissues correlated with Dst mRNAs. Because Dst-e encodes a structural protein in hemidesmosomes (HDs), we performed transmission electron microscopy. Lack of inner plaques and loss of keratin filament invasions underneath the HDs were observed in the basal keratinocytes of Dstdt-23Rbrc mice but not in those of DstGt mice; thus, the distinct phenotype of the skin of Dstdt-23Rbrc mice could be because of failure of Dst-e expression. These results indicate that distinct mutations within the Dst locus can cause different loss-of-function patterns among Dst isoforms, which accounts for the heterogeneous neural and skin phenotypes in dt mice and DST-related diseases.
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Affiliation(s)
- Nozomu Yoshioka
- Division of Neurobiology and Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan
- Transdiciplinary Research Programs, Niigata University, Niigata 950-2181, Japan
| | - Yudai Kabata
- Division of Dermatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan
| | - Momona Kuriyama
- Division of Neurobiology and Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan
| | - Norihisa Bizen
- Division of Neurobiology and Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan
| | - Li Zhou
- Division of Neurobiology and Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan
- Center for Coordination of Research Facilities, Niigata University, Niigata 951-8510, Japan
| | - Dang M Tran
- Division of Neurobiology and Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan
| | - Masato Yano
- Division of Neurobiology and Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan
| | | | - Tatsuo Ushiki
- Division of Microscopic Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan
| | | | - Riichiro Abe
- Division of Dermatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan
| | - Hirohide Takebayashi
- Division of Neurobiology and Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan
- Center for Coordination of Research Facilities, Niigata University, Niigata 951-8510, Japan
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12
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Lynch-Godrei A, De Repentigny Y, Yaworski RA, Gagnon S, Butcher J, Manoogian J, Stintzi A, Kothary R. Characterization of gastrointestinal pathologies in the dystonia musculorum mouse model for hereditary sensory and autonomic neuropathy type VI. Neurogastroenterol Motil 2020; 32:e13773. [PMID: 31814231 DOI: 10.1111/nmo.13773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 10/15/2019] [Accepted: 11/14/2019] [Indexed: 02/08/2023]
Abstract
BACKGROUND Dystonia musculorum (Dstdt ) is a murine disease caused by recessive mutations in the dystonin (Dst) gene. Loss of dorsal root ganglion (DRG) sensory neurons, ataxia, and dystonic postures before death by postnatal day 18 (P18) is a hallmark feature. Recently we observed gas accumulation and discoloration in the small intestine and cecum in Dstdt mice by P15. The human disease resulting from dystonin loss-of-function, known as hereditary sensory and autonomic neuropathy type VI (HSAN-VI), has also been associated with gastrointestinal (GI) symptoms including chronic diarrhea and abdominal pain. As neuronal dystonin isoforms are expressed in the GI tract, we hypothesized that dystonin loss-of-function in Dstdt-27J enteric nervous system (ENS) neurons resulted in neurodegeneration associated with the GI abnormalities. METHODS We characterized the nature of the GI abnormalities observed in Dstdt mice through histological analysis of the gut, assessing the ENS for signs of neurodegeneration, evaluation of GI motility and absorption, and by profiling the microbiome. KEY RESULTS Though gut histology, ENS viability, and GI absorption were normal, slowed GI motility, thinning of the colon mucous layer, and reduced microbial richness/evenness were apparent in Dstdt-27J mice by P15. Parasympathetic GI input showed signs of neurodegeneration, while sympathetic did not. CONCLUSIONS & INFERENCES Dstdt-27J GI defects are not linked to ENS neurodegeneration, but are likely a result of an imbalance in autonomic control over the gut. Further characterization of HSAN-VI patient GI symptoms is necessary to determine potential treatments targeting symptom relief.
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Affiliation(s)
- Anisha Lynch-Godrei
- Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada.,Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Yves De Repentigny
- Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Rebecca A Yaworski
- Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Sabrina Gagnon
- Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - James Butcher
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Juliana Manoogian
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Alain Stintzi
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Rashmi Kothary
- Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada.,Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada.,Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada.,Department of Medicine, University of Ottawa, Ottawa, ON, Canada.,Centre for Neuromuscular Disease, University of Ottawa, Ottawa, ON, Canada
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13
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Lynch-Godrei A, Kothary R. HSAN-VI: A spectrum disorder based on dystonin isoform expression. NEUROLOGY-GENETICS 2020; 6:e389. [PMID: 32042917 PMCID: PMC6975176 DOI: 10.1212/nxg.0000000000000389] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 11/19/2019] [Indexed: 11/15/2022]
Abstract
Hereditary sensory and autonomic neuropathy (HSAN-VI) is a recessive genetic disorder that arises because of mutations in the human dystonin gene (DST, previously known as bullous pemphigoid antigen 1). Although initial characterization of HSAN-VI reported it as a sensory neuropathy that was lethal in infancy, we now know of a number of heterozygous mutations in DST that result in milder forms of the disease. Akin to what we observe in the mouse model dystonia musculorum (Dstdt), we believe that the heterogeneity of HSAN-VI can be attributed to a number of dystonin isoforms that the mutation affects. Lack of neuronal isoform dystonin-a2 is likely the universal determinant of HSAN-VI because all reported human cases are null for this isoform, as are all Dstdt mouse alleles. Compensatory mechanisms by intact dystonin-a isoforms also likely play a role in regulating disease severity, although we have yet to determine what specific effect dystonin-a1 and dystonin-a3 have on the pathogenesis of HSAN-VI.
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Affiliation(s)
- Anisha Lynch-Godrei
- Regenerative Medicine Program (A.L.-G., R.K.), Ottawa Hospital Research Institute; Department of Cellular and Molecular Medicine (A.L.-G., R.K.) and Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa; Department of Medicine (R.K.), University of Ottawa; and Centre for Neuromuscular Disease (R.K.), University of Ottawa, Canada
| | - Rashmi Kothary
- Regenerative Medicine Program (A.L.-G., R.K.), Ottawa Hospital Research Institute; Department of Cellular and Molecular Medicine (A.L.-G., R.K.) and Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa; Department of Medicine (R.K.), University of Ottawa; and Centre for Neuromuscular Disease (R.K.), University of Ottawa, Canada
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14
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Lynch-Godrei A, De Repentigny Y, Gagnon S, Trung MT, Kothary R. Dystonin-A3 upregulation is responsible for maintenance of tubulin acetylation in a less severe dystonia musculorum mouse model for hereditary sensory and autonomic neuropathy type VI. Hum Mol Genet 2019; 27:3598-3611. [PMID: 29982604 DOI: 10.1093/hmg/ddy250] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 07/02/2018] [Indexed: 12/14/2022] Open
Abstract
Hereditary sensory and autonomic neuropathy type VI (HSAN-VI) is a recessive human disease that arises from mutations in the dystonin gene (DST; also known as Bullous pemphigoid antigen 1 gene). A milder form of HSAN-VI was recently described, resulting from loss of a single dystonin isoform (DST-A2). Similarly, mutations in the mouse dystonin gene (Dst) result in severe sensory neuropathy, dystonia musculorum (Dstdt). Two Dstdt alleles, Dstdt-Tg4 and Dstdt-27J, differ in the severity of disease. The less severe Dstdt-Tg4 mice have disrupted expression of Dst-A1 and -A2 isoforms, while the more severe Dstdt-27J allele affects Dst-A1, -A2 and -A3 isoforms. As dystonin is a cytoskeletal-linker protein, we evaluated microtubule network integrity within sensory neurons from Dstdt-Tg4 and Dstdt-27J mice. There is a significant reduction in tubulin acetylation in Dstdt-27J indicative of microtubule instability and severe microtubule disorganization within sensory axons. However, Dstdt-Tg4 mice have no change in tubulin acetylation, and microtubule organization was only mildly impaired. Thus, microtubule instability is not central to initiation of Dstdt pathogenesis, though it may contribute to disease severity. Maintenance of microtubule stability in Dstdt-Tg4 dorsal root ganglia could be attributed to an upregulation in Dst-A3 expression as a compensation for the absence of Dst-A1 and -A2 in Dstdt-Tg4 sensory neurons. Indeed, knockdown of Dst-A3 in these neurons resulted in a decrease in tubulin acetylation. These findings shed light on the possible compensatory role of dystonin isoforms within HSAN-VI, which might explain the heterogeneity in symptoms within the reported forms of the disease.
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Affiliation(s)
- Anisha Lynch-Godrei
- Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, Canada.,Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Canada
| | - Yves De Repentigny
- Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, Canada
| | - Sabrina Gagnon
- Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, Canada
| | - My Tran Trung
- Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, Canada
| | - Rashmi Kothary
- Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, Canada.,Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Canada.,Department of Medicine, University of Ottawa, Ottawa, Canada.,Centre for Neuromuscular Disease, University of Ottawa, Canada
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15
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Fortugno P, Angelucci F, Cestra G, Camerota L, Ferraro AS, Cordisco S, Uccioli L, Castiglia D, De Angelis B, Kurth I, Kornak U, Brancati F. Recessive mutations in the neuronal isoforms of DST
, encoding dystonin, lead to abnormal actin cytoskeleton organization and HSAN type VI. Hum Mutat 2018; 40:106-114. [DOI: 10.1002/humu.23678] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 09/22/2018] [Accepted: 10/25/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Paola Fortugno
- Laboratory of Molecular and Cell Biology; Istituto Dermopatico dell'Immacolata; IDI-IRCCS; Rome Italy
| | - Francesco Angelucci
- Department of Life; Health and Environmental Sciences; University of L'Aquila; L'Aquila Italy
| | - Gianluca Cestra
- IBPM; Istituto di Biologia e Patologia Molecolari; CNR; Rome Italy
- Deptartment of Biology and Biotechnology; University of Rome “Sapienza,”; Rome Italy
| | - Letizia Camerota
- Department of Life; Health and Environmental Sciences; University of L'Aquila; L'Aquila Italy
| | | | - Sonia Cordisco
- Laboratory of Molecular and Cell Biology; Istituto Dermopatico dell'Immacolata; IDI-IRCCS; Rome Italy
- Department of Life; Health and Environmental Sciences; University of L'Aquila; L'Aquila Italy
| | - Luigi Uccioli
- Department of Systems Medicine; University of Rome Tor Vergata; Rome Italy
| | - Daniele Castiglia
- Laboratory of Molecular and Cell Biology; Istituto Dermopatico dell'Immacolata; IDI-IRCCS; Rome Italy
| | - Barbara De Angelis
- Department of Plastic and Reconstructive Surgery; University of Rome “Tor Vergata,”; Rome Italy
| | - Ingo Kurth
- Institute of Human Genetics; Medical Faculty; RWTH Aachen University; Aachen Germany
| | - Uwe Kornak
- Institut für Medizinische Genetik und Humangenetik and Berlin-Brandenburg Center for Regenerative Therapies; Charité; Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health; Berlin Germany
- FG Development and Disease; Max-Planck-Institut fuer Molekulare Genetik; Berlin Germany
| | - Francesco Brancati
- Laboratory of Molecular and Cell Biology; Istituto Dermopatico dell'Immacolata; IDI-IRCCS; Rome Italy
- Department of Life; Health and Environmental Sciences; University of L'Aquila; L'Aquila Italy
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16
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Microtubule-Actin Crosslinking Factor 1 and Plakins as Therapeutic Drug Targets. Int J Mol Sci 2018; 19:ijms19020368. [PMID: 29373494 PMCID: PMC5855590 DOI: 10.3390/ijms19020368] [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] [Received: 12/11/2017] [Revised: 01/22/2018] [Accepted: 01/23/2018] [Indexed: 12/16/2022] Open
Abstract
Plakins are a family of seven cytoskeletal cross-linker proteins (microtubule-actin crosslinking factor 1 (MACF), bullous pemphigoid antigen (BPAG1) desmoplakin, envoplakin, periplakin, plectin, epiplakin) that network the three major filaments that comprise the cytoskeleton. Plakins have been found to be involved in disorders and diseases of the skin, heart, nervous system, and cancer that are attributed to autoimmune responses and genetic alterations of these macromolecules. Despite their role and involvement across a spectrum of several diseases, there are no current drugs or pharmacological agents that specifically target the members of this protein family. On the contrary, microtubules have traditionally been targeted by microtubule inhibiting agents, used for the treatment of diseases such as cancer, in spite of the deleterious toxicities associated with their clinical utility. The Research Collaboratory for Structural Bioinformatics (RCSB) was used here to identify therapeutic drugs targeting the plakin proteins, particularly the spectraplakins MACF1 and BPAG1, which contain microtubule-binding domains. RCSB analysis revealed that plakin proteins had 329 ligands, of which more than 50% were MACF1 and BPAG1 ligands and 10 were documented, clinically or experimentally, to have several therapeutic applications as anticancer, anti-inflammatory, and antibiotic agents.
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17
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Shao L, Lu B, Wen Z, Teng S, Wang L, Zhao Y, Wang L, Ishizuka K, Xu X, Sawa A, Song H, Ming G, Zhong Y. Disrupted-in-Schizophrenia-1 (DISC1) protein disturbs neural function in multiple disease-risk pathways. Hum Mol Genet 2018; 26:2634-2648. [PMID: 28472294 DOI: 10.1093/hmg/ddx147] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 04/13/2017] [Indexed: 12/20/2022] Open
Abstract
Although the genetic contribution is under debate, biological studies in multiple mouse models have suggested that the Disrupted-in-Schizophrenia-1 (DISC1) protein may contribute to susceptibility to psychiatric disorders. In the present study, we took the advantages of the Drosophila model to dissect the molecular pathways that can be affected by DISC1 in the context of pathology-related phenotypes. We found that three pathways that include the homologs of Drosophila Dys, Trio, and Shot were downregulated by introducing a C-terminal truncated mutant DISC1. Consistently, these three molecules were downregulated in the induced pluripotent stem cell-derived forebrain neurons from the subjects carrying a frameshift deletion in DISC1 C-terminus. Importantly, the three pathways were underscored in the pathophysiology of psychiatric disorders in bioinformatics analysis. Taken together, our findings are in line with the polygenic theory of psychiatric disorders.
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Affiliation(s)
- Lisha Shao
- Tsinghua-Peking Center for Life Sciences, IDG/McGovern Institute for Brain Research, MOE Key Laboratory of Protein Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, P.R. China.,Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA
| | - Binyan Lu
- Tsinghua-Peking Center for Life Sciences, IDG/McGovern Institute for Brain Research, MOE Key Laboratory of Protein Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, P.R. China.,State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, P.R. China
| | - Zhexing Wen
- Departments of Psychiatry and Behavioral Sciences, Cell Biology, and Neurology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Shaolei Teng
- Department of Biology, Howard University, Washington, DC 20059, USA
| | - Lingling Wang
- Tsinghua-Peking Center for Life Sciences, IDG/McGovern Institute for Brain Research, MOE Key Laboratory of Protein Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, P.R. China
| | - Yi Zhao
- Tsinghua-Peking Center for Life Sciences, IDG/McGovern Institute for Brain Research, MOE Key Laboratory of Protein Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, P.R. China
| | - Liyuan Wang
- Tsinghua-Peking Center for Life Sciences, IDG/McGovern Institute for Brain Research, MOE Key Laboratory of Protein Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, P.R. China
| | - Koko Ishizuka
- Molecular Psychiatry Program, Department of Psychiatry, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Xiufeng Xu
- Department of Psychiatry, First Affiliated Hospital of Kunming Medical University, Kunming 650032, China
| | - Akira Sawa
- Molecular Psychiatry Program, Department of Psychiatry, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Hongjun Song
- Departments of Psychiatry and Behavioral Sciences, Cell Biology, and Neurology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Guoli Ming
- Departments of Psychiatry and Behavioral Sciences, Cell Biology, and Neurology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Yi Zhong
- Tsinghua-Peking Center for Life Sciences, IDG/McGovern Institute for Brain Research, MOE Key Laboratory of Protein Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, P.R. China.,Cold Spring Harbor Lab, Cold Spring Harbor, NY 11724, USA
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18
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Hossain MI, Horie M, Yoshioka N, Kurose M, Yamamura K, Takebayashi H. Motoneuron degeneration in the trigeminal motor nucleus innervating the masseter muscle in Dystonia musculorum mice. Neurochem Int 2017; 119:159-170. [PMID: 29061384 DOI: 10.1016/j.neuint.2017.10.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 09/26/2017] [Accepted: 10/17/2017] [Indexed: 12/11/2022]
Abstract
Dystonia musculorum (dt) mice, which have a mutation in the Dystonin (Dst) gene, are used as animal models to investigate the human disease known as hereditary sensory and autonomic neuropathy type VI. Massive neuronal cell death is observed, mainly in the peripheral nervous system (PNS) of dt mice. We and others have recently reported a histopathological feature of these mice that neurofilament (NF) accumulates in various areas of the central nervous system (CNS), including motor pathways. Although dt mice show motor disorder and growth retardation, the causes for these are still unknown. Here we performed histopathological analyses on motor units of the trigeminal motor nucleus (Mo5 nucleus), because they are a good system to understand neuronal responses in the mutant CNS, and abnormalities in this system may lead to problems in mastication, with subsequent growth retardation. We report that motoneurons with NF accumulation in the Mo5 nuclei of DstGt homozygous mice express the stress-induced genes CHOP, ATF3, and lipocalin 2 (Lcn2). We also show a reduced number of Mo5 motoneurons and a reduced size of Mo5 nuclei in DstGt homozygous mice, possibly due to apoptosis, given the presence of cleaved caspase 3-positive Mo5 motoneurons. In the mandibular (V3) branches of the trigeminal nerve, which contains axons of Mo5 motoneurons and trigeminal sensory neurons, there was infiltration of Iba1-positive macrophages. Finally, we report atrophy of the masseter muscles in DstGt homozygous mice, which showed abnormal nuclear localization of myofibrils and increased expression of atrogin-1 mRNA, a muscle atrophy-related gene and weaker masseter muscle strength with uncontrolled muscle activity by electromyography (EMG). Taken together, our findings strongly suggest that mastication in dt mice is affected due to abnormalities of Mo5 motoneurons and masseter muscles, leading to growth retardation at the post-weaning stages.
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Affiliation(s)
- M Ibrahim Hossain
- Division of Neurobiology and Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan; Department of Biochemistry and Molecular Biology, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
| | - Masao Horie
- Division of Neurobiology and Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan
| | - Nozomu Yoshioka
- Division of Neurobiology and Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan; Transdisciplinary Research Program, Niigata University, Niigata 951-8510, Japan
| | - Masayuki Kurose
- Division of Oral Physiology, Niigata University Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan
| | - Kensuke Yamamura
- Division of Oral Physiology, Niigata University Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan
| | - Hirohide Takebayashi
- Division of Neurobiology and Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan.
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19
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Voelzmann A, Liew YT, Qu Y, Hahn I, Melero C, Sánchez-Soriano N, Prokop A. Drosophila Short stop as a paradigm for the role and regulation of spectraplakins. Semin Cell Dev Biol 2017; 69:40-57. [DOI: 10.1016/j.semcdb.2017.05.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 05/22/2017] [Accepted: 05/29/2017] [Indexed: 02/07/2023]
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20
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Cappuccio G, Pinelli M, Torella A, Alagia M, Auricchio R, Staiano A, Nigro V, Brunetti-Pierri N. Expanding the phenotype of DST
-related disorder: A case report suggesting a genotype/phenotype correlation. Am J Med Genet A 2017; 173:2743-2746. [DOI: 10.1002/ajmg.a.38367] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 06/22/2017] [Accepted: 06/25/2017] [Indexed: 12/28/2022]
Affiliation(s)
- Gerarda Cappuccio
- Department of Translational Medicine, Section of Pediatrics; Federico II University; Naples Italy
- Telethon Institute of Genetics and Medicine; Pozzuoli Naples Italy
| | - Michele Pinelli
- Department of Translational Medicine, Section of Pediatrics; Federico II University; Naples Italy
- Telethon Institute of Genetics and Medicine; Pozzuoli Naples Italy
| | - Annalaura Torella
- Telethon Institute of Genetics and Medicine; Pozzuoli Naples Italy
- Medical Genetics, Department of Biochemistry, Biophysics and General Pathology; University of Campania 'Luigi Vanvitelli'; Naples Italy
| | - Marianna Alagia
- Department of Translational Medicine, Section of Pediatrics; Federico II University; Naples Italy
| | - Renata Auricchio
- Department of Translational Medicine, Section of Pediatrics; Federico II University; Naples Italy
| | - Annamaria Staiano
- Department of Translational Medicine, Section of Pediatrics; Federico II University; Naples Italy
| | - Vincenzo Nigro
- Telethon Institute of Genetics and Medicine; Pozzuoli Naples Italy
- Medical Genetics, Department of Biochemistry, Biophysics and General Pathology; University of Campania 'Luigi Vanvitelli'; Naples Italy
| | - Nicola Brunetti-Pierri
- Department of Translational Medicine, Section of Pediatrics; Federico II University; Naples Italy
- Telethon Institute of Genetics and Medicine; Pozzuoli Naples Italy
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21
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Zhang J, Yue J, Wu X. Spectraplakin family proteins - cytoskeletal crosslinkers with versatile roles. J Cell Sci 2017; 130:2447-2457. [PMID: 28679697 PMCID: PMC5558266 DOI: 10.1242/jcs.196154] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The different cytoskeletal networks in a cell are responsible for many fundamental cellular processes. Current studies have shown that spectraplakins, cytoskeletal crosslinkers that combine features of both the spectrin and plakin families of crosslinkers, have a critical role in integrating these different cytoskeletal networks. Spectraplakin genes give rise to a variety of isoforms that have distinct functions. Importantly, all spectraplakin isoforms are uniquely able to associate with all three elements of the cytoskeleton, namely, F-actin, microtubules and intermediate filaments. In this Review, we will highlight recent studies that have unraveled their function in a wide range of different processes, from regulating cell adhesion in skin keratinocytes to neuronal cell migration. Taken together, this work has revealed a diverse and indispensable role for orchestrating the function of different cytoskeletal elements in vivo.
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Affiliation(s)
- Jamie Zhang
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL 60637, USA
| | - Jiping Yue
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL 60637, USA
| | - Xiaoyang Wu
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL 60637, USA
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22
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Horie M, Yoshioka N, Takebayashi H. BPAG1 in muscles: Structure and function in skeletal, cardiac and smooth muscle. Semin Cell Dev Biol 2017; 69:26-33. [PMID: 28736206 DOI: 10.1016/j.semcdb.2017.07.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 07/12/2017] [Accepted: 07/14/2017] [Indexed: 01/19/2023]
Abstract
BPAG1, also known as Dystonin or BP230, belongs to the plakin family of proteins, which has multiple cytoskeleton-binding domains. Several BPAG1 isoforms are produced by a single BPAG1 genomic locus using different promoters and exons. For example, BPAG1a, BPAG1b, and BPAG1e are predominantly expressed in the nervous system, muscle, and skin, respectively. Among BPAG1 isoforms, BPAG1e is well studied because it was first identified as an autoantigen in patients with bullous pemphigoid, an autoimmune skin disease. BPAG1e is a component of hemidesmosomes, the adhesion complexes that promote dermal-epidermal cohesion. In the nervous system, the role of BPAG1a is also well studied because disruption of BPAG1a results in a phenotype identical to that of Dystonia musculorum (dt) mutants, which show progressive motor disorder. However, the expression and function of BPAG1 in muscles is not well studied. The aim of this review is to provide an overview of and highlight some recent findings on the expression and function of BPAG1 in muscles, which can assist future studies designed to delineate the role and regulation of BPAG1 in the dt mouse phenotype and in human hereditary sensory and autonomic neuropathy type 6 (HSAN6).
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Affiliation(s)
- Masao Horie
- Division of Neurobiology and Anatomy, Niigata University, Niigata 951-8510, Japan
| | - Nozomu Yoshioka
- Division of Neurobiology and Anatomy, Niigata University, Niigata 951-8510, Japan
| | - Hirohide Takebayashi
- Division of Neurobiology and Anatomy, Niigata University, Niigata 951-8510, Japan.
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23
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Manganelli F, Parisi S, Nolano M, Tao F, Paladino S, Pisciotta C, Tozza S, Nesti C, Rebelo AP, Provitera V, Santorelli FM, Shy ME, Russo T, Zuchner S, Santoro L. Novel mutations in dystonin provide clues to the pathomechanisms of HSAN-VI. Neurology 2017; 88:2132-2140. [PMID: 28468842 DOI: 10.1212/wnl.0000000000003992] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 03/10/2017] [Indexed: 01/21/2023] Open
Abstract
OBJECTIVE To describe a second hereditary sensory autonomic neuropathy type VI (HSAN-VI) family harboring 2 novel heterozygous mutations in the dystonin (DST) gene and to evaluate their effect on neurons derived from induced pluripotent stem cells (iPSC). METHODS The family consisted of 3 affected siblings from nonconsanguineous healthy parents. All members underwent clinical and electrophysiologic evaluation and genetic analysis. Two patients underwent quantitative sensory testing (QST), cardiovascular reflexes, dynamic sweat test, and skin biopsy to evaluate somatic and autonomic cutaneous innervation and to get fibroblast cultures for developing iPSC-derived neurons. RESULTS Onset occurred in the first decade, with painless and progressive mutilating distal ulcerations leading to amputation and joint deformity. Sensation to pain, touch, and vibration was reduced. Autonomic disturbances included hypohidrosis, pupillary abnormalities, and gastrointestinal and sexual dysfunction. Nerve conduction studies showed a severe axonal sensory neuropathy. QST and autonomic functional studies were abnormal. Skin biopsy revealed a lack of sensory and autonomic nerve fibers. Genetic analysis revealed 2 pathogenic mutations in the DST gene affecting exclusively the DST neuronal isoform-a2. Neurons derived from iPSC showed absence or very low levels of DST protein and short and dystrophic neuritis or no projections at all. CONCLUSIONS Unlike the previous HSAN-VI family, our description indicates that DST mutations may be associated with a nonlethal and nonsyndromic phenotype. Neuronal loss affects large and small sensory nerve fibers as well as autonomic ones. Induced-PSC findings suggest that dystonin defect might alter proper development of the peripheral nerves. Dystonin-a2 plays a major role in the HSAN-VI phenotype.
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Affiliation(s)
- Fiore Manganelli
- From the Departments of Neurosciences, Reproductive Sciences, and Odontostomatology (F.M., C.P., S.T., L.S.) and Department of Molecular Medicine and Medical Biotechnologies (S. Parisi, S. Paladino, T.R.), University of Naples "Federico II"; Neurology Department (M.N., V.P.), "Salvatore Maugeri" Foundation IRCCS-Medical Center of Telese, Telese Terme, Italy; Department of Human Genetics and Hussman Institute for Human Genomics (F.T., A.P.R., S.Z.), Miller School of Medicine, University of Miami, FL; Molecular Medicine Laboratory (C.N., F.M.S.), Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Pisa, Italy; and Department of Neurology (M.E.S.), University of Iowa Carver College of Medicine, Iowa City
| | - Silvia Parisi
- From the Departments of Neurosciences, Reproductive Sciences, and Odontostomatology (F.M., C.P., S.T., L.S.) and Department of Molecular Medicine and Medical Biotechnologies (S. Parisi, S. Paladino, T.R.), University of Naples "Federico II"; Neurology Department (M.N., V.P.), "Salvatore Maugeri" Foundation IRCCS-Medical Center of Telese, Telese Terme, Italy; Department of Human Genetics and Hussman Institute for Human Genomics (F.T., A.P.R., S.Z.), Miller School of Medicine, University of Miami, FL; Molecular Medicine Laboratory (C.N., F.M.S.), Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Pisa, Italy; and Department of Neurology (M.E.S.), University of Iowa Carver College of Medicine, Iowa City
| | - Maria Nolano
- From the Departments of Neurosciences, Reproductive Sciences, and Odontostomatology (F.M., C.P., S.T., L.S.) and Department of Molecular Medicine and Medical Biotechnologies (S. Parisi, S. Paladino, T.R.), University of Naples "Federico II"; Neurology Department (M.N., V.P.), "Salvatore Maugeri" Foundation IRCCS-Medical Center of Telese, Telese Terme, Italy; Department of Human Genetics and Hussman Institute for Human Genomics (F.T., A.P.R., S.Z.), Miller School of Medicine, University of Miami, FL; Molecular Medicine Laboratory (C.N., F.M.S.), Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Pisa, Italy; and Department of Neurology (M.E.S.), University of Iowa Carver College of Medicine, Iowa City
| | - Feifei Tao
- From the Departments of Neurosciences, Reproductive Sciences, and Odontostomatology (F.M., C.P., S.T., L.S.) and Department of Molecular Medicine and Medical Biotechnologies (S. Parisi, S. Paladino, T.R.), University of Naples "Federico II"; Neurology Department (M.N., V.P.), "Salvatore Maugeri" Foundation IRCCS-Medical Center of Telese, Telese Terme, Italy; Department of Human Genetics and Hussman Institute for Human Genomics (F.T., A.P.R., S.Z.), Miller School of Medicine, University of Miami, FL; Molecular Medicine Laboratory (C.N., F.M.S.), Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Pisa, Italy; and Department of Neurology (M.E.S.), University of Iowa Carver College of Medicine, Iowa City
| | - Simona Paladino
- From the Departments of Neurosciences, Reproductive Sciences, and Odontostomatology (F.M., C.P., S.T., L.S.) and Department of Molecular Medicine and Medical Biotechnologies (S. Parisi, S. Paladino, T.R.), University of Naples "Federico II"; Neurology Department (M.N., V.P.), "Salvatore Maugeri" Foundation IRCCS-Medical Center of Telese, Telese Terme, Italy; Department of Human Genetics and Hussman Institute for Human Genomics (F.T., A.P.R., S.Z.), Miller School of Medicine, University of Miami, FL; Molecular Medicine Laboratory (C.N., F.M.S.), Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Pisa, Italy; and Department of Neurology (M.E.S.), University of Iowa Carver College of Medicine, Iowa City
| | - Chiara Pisciotta
- From the Departments of Neurosciences, Reproductive Sciences, and Odontostomatology (F.M., C.P., S.T., L.S.) and Department of Molecular Medicine and Medical Biotechnologies (S. Parisi, S. Paladino, T.R.), University of Naples "Federico II"; Neurology Department (M.N., V.P.), "Salvatore Maugeri" Foundation IRCCS-Medical Center of Telese, Telese Terme, Italy; Department of Human Genetics and Hussman Institute for Human Genomics (F.T., A.P.R., S.Z.), Miller School of Medicine, University of Miami, FL; Molecular Medicine Laboratory (C.N., F.M.S.), Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Pisa, Italy; and Department of Neurology (M.E.S.), University of Iowa Carver College of Medicine, Iowa City
| | - Stefano Tozza
- From the Departments of Neurosciences, Reproductive Sciences, and Odontostomatology (F.M., C.P., S.T., L.S.) and Department of Molecular Medicine and Medical Biotechnologies (S. Parisi, S. Paladino, T.R.), University of Naples "Federico II"; Neurology Department (M.N., V.P.), "Salvatore Maugeri" Foundation IRCCS-Medical Center of Telese, Telese Terme, Italy; Department of Human Genetics and Hussman Institute for Human Genomics (F.T., A.P.R., S.Z.), Miller School of Medicine, University of Miami, FL; Molecular Medicine Laboratory (C.N., F.M.S.), Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Pisa, Italy; and Department of Neurology (M.E.S.), University of Iowa Carver College of Medicine, Iowa City
| | - Claudia Nesti
- From the Departments of Neurosciences, Reproductive Sciences, and Odontostomatology (F.M., C.P., S.T., L.S.) and Department of Molecular Medicine and Medical Biotechnologies (S. Parisi, S. Paladino, T.R.), University of Naples "Federico II"; Neurology Department (M.N., V.P.), "Salvatore Maugeri" Foundation IRCCS-Medical Center of Telese, Telese Terme, Italy; Department of Human Genetics and Hussman Institute for Human Genomics (F.T., A.P.R., S.Z.), Miller School of Medicine, University of Miami, FL; Molecular Medicine Laboratory (C.N., F.M.S.), Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Pisa, Italy; and Department of Neurology (M.E.S.), University of Iowa Carver College of Medicine, Iowa City
| | - Adriana P Rebelo
- From the Departments of Neurosciences, Reproductive Sciences, and Odontostomatology (F.M., C.P., S.T., L.S.) and Department of Molecular Medicine and Medical Biotechnologies (S. Parisi, S. Paladino, T.R.), University of Naples "Federico II"; Neurology Department (M.N., V.P.), "Salvatore Maugeri" Foundation IRCCS-Medical Center of Telese, Telese Terme, Italy; Department of Human Genetics and Hussman Institute for Human Genomics (F.T., A.P.R., S.Z.), Miller School of Medicine, University of Miami, FL; Molecular Medicine Laboratory (C.N., F.M.S.), Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Pisa, Italy; and Department of Neurology (M.E.S.), University of Iowa Carver College of Medicine, Iowa City
| | - Vincenzo Provitera
- From the Departments of Neurosciences, Reproductive Sciences, and Odontostomatology (F.M., C.P., S.T., L.S.) and Department of Molecular Medicine and Medical Biotechnologies (S. Parisi, S. Paladino, T.R.), University of Naples "Federico II"; Neurology Department (M.N., V.P.), "Salvatore Maugeri" Foundation IRCCS-Medical Center of Telese, Telese Terme, Italy; Department of Human Genetics and Hussman Institute for Human Genomics (F.T., A.P.R., S.Z.), Miller School of Medicine, University of Miami, FL; Molecular Medicine Laboratory (C.N., F.M.S.), Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Pisa, Italy; and Department of Neurology (M.E.S.), University of Iowa Carver College of Medicine, Iowa City
| | - Filippo M Santorelli
- From the Departments of Neurosciences, Reproductive Sciences, and Odontostomatology (F.M., C.P., S.T., L.S.) and Department of Molecular Medicine and Medical Biotechnologies (S. Parisi, S. Paladino, T.R.), University of Naples "Federico II"; Neurology Department (M.N., V.P.), "Salvatore Maugeri" Foundation IRCCS-Medical Center of Telese, Telese Terme, Italy; Department of Human Genetics and Hussman Institute for Human Genomics (F.T., A.P.R., S.Z.), Miller School of Medicine, University of Miami, FL; Molecular Medicine Laboratory (C.N., F.M.S.), Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Pisa, Italy; and Department of Neurology (M.E.S.), University of Iowa Carver College of Medicine, Iowa City
| | - Michael E Shy
- From the Departments of Neurosciences, Reproductive Sciences, and Odontostomatology (F.M., C.P., S.T., L.S.) and Department of Molecular Medicine and Medical Biotechnologies (S. Parisi, S. Paladino, T.R.), University of Naples "Federico II"; Neurology Department (M.N., V.P.), "Salvatore Maugeri" Foundation IRCCS-Medical Center of Telese, Telese Terme, Italy; Department of Human Genetics and Hussman Institute for Human Genomics (F.T., A.P.R., S.Z.), Miller School of Medicine, University of Miami, FL; Molecular Medicine Laboratory (C.N., F.M.S.), Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Pisa, Italy; and Department of Neurology (M.E.S.), University of Iowa Carver College of Medicine, Iowa City
| | - Tommaso Russo
- From the Departments of Neurosciences, Reproductive Sciences, and Odontostomatology (F.M., C.P., S.T., L.S.) and Department of Molecular Medicine and Medical Biotechnologies (S. Parisi, S. Paladino, T.R.), University of Naples "Federico II"; Neurology Department (M.N., V.P.), "Salvatore Maugeri" Foundation IRCCS-Medical Center of Telese, Telese Terme, Italy; Department of Human Genetics and Hussman Institute for Human Genomics (F.T., A.P.R., S.Z.), Miller School of Medicine, University of Miami, FL; Molecular Medicine Laboratory (C.N., F.M.S.), Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Pisa, Italy; and Department of Neurology (M.E.S.), University of Iowa Carver College of Medicine, Iowa City
| | - Stephan Zuchner
- From the Departments of Neurosciences, Reproductive Sciences, and Odontostomatology (F.M., C.P., S.T., L.S.) and Department of Molecular Medicine and Medical Biotechnologies (S. Parisi, S. Paladino, T.R.), University of Naples "Federico II"; Neurology Department (M.N., V.P.), "Salvatore Maugeri" Foundation IRCCS-Medical Center of Telese, Telese Terme, Italy; Department of Human Genetics and Hussman Institute for Human Genomics (F.T., A.P.R., S.Z.), Miller School of Medicine, University of Miami, FL; Molecular Medicine Laboratory (C.N., F.M.S.), Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Pisa, Italy; and Department of Neurology (M.E.S.), University of Iowa Carver College of Medicine, Iowa City
| | - Lucio Santoro
- From the Departments of Neurosciences, Reproductive Sciences, and Odontostomatology (F.M., C.P., S.T., L.S.) and Department of Molecular Medicine and Medical Biotechnologies (S. Parisi, S. Paladino, T.R.), University of Naples "Federico II"; Neurology Department (M.N., V.P.), "Salvatore Maugeri" Foundation IRCCS-Medical Center of Telese, Telese Terme, Italy; Department of Human Genetics and Hussman Institute for Human Genomics (F.T., A.P.R., S.Z.), Miller School of Medicine, University of Miami, FL; Molecular Medicine Laboratory (C.N., F.M.S.), Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Pisa, Italy; and Department of Neurology (M.E.S.), University of Iowa Carver College of Medicine, Iowa City.
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24
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Short stop mediates axonal compartmentalization of mucin-type core 1 glycans. Sci Rep 2017; 7:41455. [PMID: 28150729 PMCID: PMC5288716 DOI: 10.1038/srep41455] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 12/19/2016] [Indexed: 02/02/2023] Open
Abstract
T antigen, mucin-type core 1 O-glycan, is highly expressed in the embryonic central nervous system (CNS) and co-localizes with a Drosophila CNS marker, BP102 antigen. BP102 antigen and Derailed, an axon guidance receptor, are localized specifically in the proximal axon segment of isolated primary cultured neurons, and their mobility is restricted at the intra-axonal boundary by a diffusion barrier. However, the preferred trafficking mechanism remains unknown. In this study, the major O-glycan T antigen was found to localize within the proximal compartments of primary cultured Drosophila neurons, whereas the N-glycan HRP antigen was not. Ultrastructural analysis by atmospheric scanning electron microscopy revealed that microtubule bundles cross one another at the intra-axonal boundary, and that T antigens form circular pattern before the boundary. We then identified Short stop (Shot), a crosslinker protein between F-actin and microtubules, as a mediator for the proximal localization of T antigens; null mutation of shot cancelled preferential localization of T antigens. Moreover, F-actin binding domain of Shot was required for their proximal localization. Together, our results allow us to propose a novel trafficking pathway where Shot crosslinks F-actin and microtubules around the intra-axonal boundary, directing T antigen-carrying vesicles toward the proximal plasma membrane.
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25
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Characterization of novel dystonia musculorum mutant mice: Implications for central nervous system abnormality. Neurobiol Dis 2016; 96:271-283. [DOI: 10.1016/j.nbd.2016.09.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 09/20/2016] [Accepted: 09/24/2016] [Indexed: 11/19/2022] Open
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26
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van de Willige D, Hoogenraad CC, Akhmanova A. Microtubule plus-end tracking proteins in neuronal development. Cell Mol Life Sci 2016; 73:2053-77. [PMID: 26969328 PMCID: PMC4834103 DOI: 10.1007/s00018-016-2168-3] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Revised: 02/04/2016] [Accepted: 02/22/2016] [Indexed: 11/28/2022]
Abstract
Regulation of the microtubule cytoskeleton is of pivotal importance for neuronal development and function. One such regulatory mechanism centers on microtubule plus-end tracking proteins (+TIPs): structurally and functionally diverse regulatory factors, which can form complex macromolecular assemblies at the growing microtubule plus-ends. +TIPs modulate important properties of microtubules including their dynamics and their ability to control cell polarity, membrane transport and signaling. Several neurodevelopmental and neurodegenerative diseases are associated with mutations in +TIPs or with misregulation of these proteins. In this review, we focus on the role and regulation of +TIPs in neuronal development and associated disorders.
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Affiliation(s)
- Dieudonnée van de Willige
- Cell Biology, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH, Utrecht, The Netherlands
| | - Casper C Hoogenraad
- Cell Biology, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH, Utrecht, The Netherlands.
| | - Anna Akhmanova
- Cell Biology, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH, Utrecht, The Netherlands.
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27
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Künzli K, Favre B, Chofflon M, Borradori L. One gene but different proteins and diseases: the complexity of dystonin and bullous pemphigoid antigen 1. Exp Dermatol 2015; 25:10-6. [DOI: 10.1111/exd.12877] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/13/2015] [Indexed: 12/16/2022]
Affiliation(s)
- Kseniia Künzli
- Department of Dermatology; Inselspital; Bern University Hospital; Bern Switzerland
| | - Bertrand Favre
- Department of Dermatology; Inselspital; Bern University Hospital; Bern Switzerland
| | - Michel Chofflon
- Department of Clinical Neurosciences; Geneva University Hospitals; Geneva Switzerland
| | - Luca Borradori
- Department of Dermatology; Inselspital; Bern University Hospital; Bern Switzerland
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28
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Abstract
The neuronal isoforms of bullous pemphigoid antigen 1 (BPAG1, and also known as dystonin) are a group of large cytoskeletal linker proteins predominantly expressed in sensory neurons. The major neuronal isoforms consist of the spectraplakins (BPAG1/dystonin-a1, -a2, -a3), which have an N-terminus actin-binding domain and a C-terminus microtubule-binding domain. These proteins have crucial roles in cytoskeletal organization and stability, organelle integrity, and intracellular transport. BPAG1 loss-of-function in mice results in a lethal movement disorder known as dystonia musculorum (dt), which is likely caused by rapid sensory neuron degeneration. A human disease termed hereditary and sensory autonomic neuropathy type VI was also identified to be associated with mutations in the BPAG1 gene (DST). This chapter provides an overview of the type of experiments used for analysis of the different isoforms of BPAG1.
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Affiliation(s)
- Anisha Lynch-Godrei
- Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada; Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Rashmi Kothary
- Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada; Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario, Canada; Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada; University of Ottawa Center for Neuromuscular Disease, Ottawa, Ontario, Canada.
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29
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Ferrier A, De Repentigny Y, Lynch-Godrei A, Gibeault S, Eid W, Kuo D, Zha X, Kothary R. Disruption in the autophagic process underlies the sensory neuropathy in dystonia musculorum mice. Autophagy 2015; 11:1025-36. [PMID: 26043942 PMCID: PMC4590603 DOI: 10.1080/15548627.2015.1052207] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 04/23/2015] [Accepted: 05/11/2015] [Indexed: 12/27/2022] Open
Abstract
A homozygous mutation in the DST (dystonin) gene causes a newly identified lethal form of hereditary sensory and autonomic neuropathy in humans (HSAN-VI). DST loss of function similarly leads to sensory neuron degeneration and severe ataxia in dystonia musculorum (Dst(dt)) mice. DST is involved in maintaining cytoskeletal integrity and intracellular transport. As autophagy is highly reliant upon stable microtubules and motor proteins, we assessed the influence of DST loss of function on autophagy using the Dst(dt-Tg4) mouse model. Electron microscopy (EM) revealed an accumulation of autophagosomes in sensory neurons from these mice. Furthermore, we demonstrated that the autophagic flux was impaired. Levels of LC3-II, a marker of autophagosomes, were elevated. Consequently, Dst(dt-Tg4) sensory neurons displayed impaired protein turnover of autophagosome substrate SQTSM1/p62 and of polyubiquitinated proteins. Interestingly, in a previously described Dst(dt-Tg4) mouse model that is partially rescued by neuronal specific expression of the DST-A2 isoform, autophagosomes, autolysosomes, and damaged organelles were reduced when compared to Dst(dt-Tg4) mutant mice. LC3-II, SQTSM1, polyubiquitinated proteins and autophagic flux were also restored to wild-type levels in the rescued mice. Finally, a significant decrease in DNAIC1 (dynein, axonemal, intermediate chain 1; the mouse ortholog of human DNAI1), a member of the DMC (dynein/dynactin motor complex), was noted in Dst(dt-Tg4) dorsal root ganglia and sensory neurons. Thus, DST-A2 loss of function perturbs late stages of autophagy, and dysfunctional autophagy at least partially underlies Dst(dt) pathogenesis. We therefore conclude that the DST-A2 isoform normally facilitates autophagy within sensory neurons to maintain cellular homeostasis.
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Key Words
- ANOVA, analysis of variance
- BPAG1
- CASP3, caspase 3, apoptosis-related cysteine peptidase
- DMC
- DMC, dynein/dynactin motor complex
- DMEM, Dulbecco's modified Eagle's medium
- DNAIC1, dynein, axonemal, intermediate chain 1
- DRG, dorsal root ganglion
- DST, dystonin
- Dstdt, dystonia musculorum
- EM, electron microscopy
- FBS, fetal bovine serum
- HSAN-VI
- HSAN-VI, hereditary sensory and autonomic neuropathy type VI
- MACF1, microtubule-actin crosslinking factor 1
- MAP1B
- MAP1B, microtubule-associated protein 1B
- MAP1LC3/LC3, microtubule associated-protein 1 light chain 3
- MT, microtubule
- P, postnatal day
- PBS, phosphate-buffered saline
- PCR, polymerase chain reaction
- PrP, prion protein
- RT-PCR, reverse transcription-polymerase chain reaction
- SDS-PAGE, sodium dodecyl sulfate-polyacrylamide gel electrophoresis
- SQTSM1/p62, sequestosome 1
- TCA, trichloroacetic acid
- TUBB3, tubulin, β, 3 class III
- WT, wild type
- autophagosome
- dynein
- dystonin
- microtubules
- trafficking
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Affiliation(s)
- Andrew Ferrier
- Ottawa Hospital Research Institute; Ottawa, ON, Canada
- Department of Cellular and Molecular Medicine; University of Ottawa; Ottawa, ON, Canada
| | | | - Anisha Lynch-Godrei
- Ottawa Hospital Research Institute; Ottawa, ON, Canada
- Department of Cellular and Molecular Medicine; University of Ottawa; Ottawa, ON, Canada
| | | | - Walaa Eid
- Ottawa Hospital Research Institute; Ottawa, ON, Canada
- Department of Biochemistry; Microbiology; and Immunology; University of Ottawa; Ottawa, ON, Canada
| | - Daniel Kuo
- Ottawa Hospital Research Institute; Ottawa, ON, Canada
| | - Xiaohui Zha
- Ottawa Hospital Research Institute; Ottawa, ON, Canada
- Department of Biochemistry; Microbiology; and Immunology; University of Ottawa; Ottawa, ON, Canada
- Department of Medicine; University of Ottawa; Ottawa, ON, Canada
| | - Rashmi Kothary
- Ottawa Hospital Research Institute; Ottawa, ON, Canada
- Department of Cellular and Molecular Medicine; University of Ottawa; Ottawa, ON, Canada
- Department of Medicine; University of Ottawa; Ottawa, ON, Canada
- University of Ottawa Center for Neuromuscular Disease; Ottawa, ON, Canada
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30
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Horie M, Watanabe K, Bepari AK, Nashimoto JI, Araki K, Sano H, Chiken S, Nambu A, Ono K, Ikenaka K, Kakita A, Yamamura KI, Takebayashi H. Disruption of actin-binding domain-containing Dystonin protein causesdystonia musculorumin mice. Eur J Neurosci 2014; 40:3458-71. [DOI: 10.1111/ejn.12711] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 07/14/2014] [Accepted: 08/04/2014] [Indexed: 12/19/2022]
Affiliation(s)
- Masao Horie
- Division of Neurobiology and Anatomy; Graduate School of Medical and Dental Sciences; Niigata University; Asahimachi Chuo-ku Niigata 951-8510 Japan
| | - Keisuke Watanabe
- Division of Neurobiology and Anatomy; Graduate School of Medical and Dental Sciences; Niigata University; Asahimachi Chuo-ku Niigata 951-8510 Japan
| | - Asim K. Bepari
- Division of Neurobiology and Anatomy; Graduate School of Medical and Dental Sciences; Niigata University; Asahimachi Chuo-ku Niigata 951-8510 Japan
| | - Jun-ichiro Nashimoto
- Division of Neurobiology and Anatomy; Graduate School of Medical and Dental Sciences; Niigata University; Asahimachi Chuo-ku Niigata 951-8510 Japan
| | - Kimi Araki
- Institute of Resource Development and Analysis; Kumamoto University; Kumamoto Japan
| | - Hiromi Sano
- Division of System Neurophysiology; National Institute for Physiological Sciences; Okazaki Japan
| | - Satomi Chiken
- Division of System Neurophysiology; National Institute for Physiological Sciences; Okazaki Japan
| | - Atsushi Nambu
- Division of System Neurophysiology; National Institute for Physiological Sciences; Okazaki Japan
| | - Katsuhiko Ono
- Department of Biology; Kyoto Prefectural University of Medicine; Kyoto Japan
| | - Kazuhiro Ikenaka
- Division of Neurobiology and Bioinformatics; National Institute for Physiological Sciences; Okazaki Japan
| | - Akiyoshi Kakita
- Department of Pathology; Brain Research Institute; Niigata University; Niigata Japan
| | - Ken-ichi Yamamura
- Institute of Resource Development and Analysis; Kumamoto University; Kumamoto Japan
| | - Hirohide Takebayashi
- Division of Neurobiology and Anatomy; Graduate School of Medical and Dental Sciences; Niigata University; Asahimachi Chuo-ku Niigata 951-8510 Japan
- PRESTO; Japan Science and Technology Agency (JST); Saitama Japan
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