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Dong H, Qin B, Zhang H, Lei L, Wu S. Current Treatment Methods for Charcot-Marie-Tooth Diseases. Biomolecules 2024; 14:1138. [PMID: 39334903 PMCID: PMC11430469 DOI: 10.3390/biom14091138] [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: 07/21/2024] [Revised: 08/21/2024] [Accepted: 08/29/2024] [Indexed: 09/30/2024] Open
Abstract
Charcot-Marie-Tooth (CMT) disease, the most common inherited neuromuscular disorder, exhibits a wide phenotypic range, genetic heterogeneity, and a variable disease course. The diverse molecular genetic mechanisms of CMT were discovered over the past three decades with the development of molecular biology and gene sequencing technologies. These methods have brought new options for CMT reclassification and led to an exciting era of treatment target discovery for this incurable disease. Currently, there are no approved disease management methods that can fully cure patients with CMT, and rehabilitation, orthotics, and surgery are the only available treatments to ameliorate symptoms. Considerable research attention has been given to disease-modifying therapies, including gene silencing, gene addition, and gene editing, but most treatments that reach clinical trials are drug treatments, while currently, only gene therapies for CMT2S have reached the clinical trial stage. In this review, we highlight the pathogenic mechanisms and therapeutic investigations of different subtypes of CMT, and promising therapeutic approaches are also discussed.
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Affiliation(s)
- Hongxian Dong
- Department of Orthopedic Surgery and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu 610041, China; (H.D.); (B.Q.); (H.Z.)
| | - Boquan Qin
- Department of Orthopedic Surgery and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu 610041, China; (H.D.); (B.Q.); (H.Z.)
| | - Hui Zhang
- Department of Orthopedic Surgery and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu 610041, China; (H.D.); (B.Q.); (H.Z.)
| | - Lei Lei
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Shizhou Wu
- Department of Orthopedic Surgery and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu 610041, China; (H.D.); (B.Q.); (H.Z.)
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Yeh TY, Chang MF, Kan YY, Chiang H, Hsieh ST. HSP27 Modulates Neuropathic Pain by Inhibiting P2X3 Degradation. Mol Neurobiol 2024; 61:707-724. [PMID: 37656312 DOI: 10.1007/s12035-023-03582-7] [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: 12/13/2022] [Accepted: 08/14/2023] [Indexed: 09/02/2023]
Abstract
The role of heat shock protein 27 (HSP27), a chaperone, in neuropathic pain after nerve injury has not been systematically surveyed despite its neuroprotective and regeneration-promoting effects. In this study, we found that HSP27 expression in sensory neurons of the dorsal root ganglia (DRG) mediated nerve injury-induced neuropathic pain. Neuropathic pain behaviors were alleviated by silencing HSP27 in the DRG of a rat spinal nerve ligation (SNL) model. Local injection of an HSP27-overexpression construct into the DRG of naïve rats elicited neuropathic pain behaviors. HSP27 interacted with a purinergic receptor, P2X3, and their expression patterns corroborated the induction and reversal of neuropathic pain according to two lines of evidence: colocalization immunohistochemically and immunoprecipitation biochemically. In a cell model cotransfected with HSP27 and P2X3, the degradation rate of P2X3 was reduced in the presence of HSP27. Such an alteration was mediated by reducing P2X3 ubiquitination in SNL rats and was reversed after silencing HSP27 in the DRGs of SNL rats. In summary, the interaction of HSP27 with P2X3 provides a new mechanism of injury-induced neuropathic pain that could serve as an alternative therapeutic target.
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Affiliation(s)
- Ti-Yen Yeh
- Department of Anatomy and Cell Biology, College of Medicine, National Taiwan University, Taipei, 10051, Taiwan
| | - Ming-Fong Chang
- Department of Anatomy and Cell Biology, College of Medicine, National Taiwan University, Taipei, 10051, Taiwan
| | - Yu-Yu Kan
- School of Medicine, College of Medicine, National Sun Yat-sen University, Kaohsiung, 80424, Taiwan
| | | | - Sung-Tsang Hsieh
- Department of Anatomy and Cell Biology, College of Medicine, National Taiwan University, Taipei, 10051, Taiwan.
- Graduate Institute of Brain and Mind Sciences, College of Medicine, National Taiwan University, Taipei, 10051, Taiwan.
- Center of Precision Medicine, College of Medicine, National Taiwan University, Taipei, 10051, Taiwan.
- Department of Neurology, National Taiwan University Hospital, Taipei, 10002, Taiwan.
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Espinoza KS, Hermanson KN, Beard CA, Schwartz NU, Snider JM, Low BE, Wiles MV, Hannun YA, Obeid LM, Snider AJ. A novel HSPB1 S139F mouse model of Charcot-Marie-Tooth Disease. Prostaglandins Other Lipid Mediat 2023; 169:106769. [PMID: 37625781 PMCID: PMC10843462 DOI: 10.1016/j.prostaglandins.2023.106769] [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] [Revised: 08/01/2023] [Accepted: 08/22/2023] [Indexed: 08/27/2023]
Abstract
Charcot-Marie-Tooth Disease (CMT) is a commonly inherited peripheral polyneuropathy. Clinical manifestations for this disease include symmetrical distal polyneuropathy, altered deep tendon reflexes, distal sensory loss, foot deformities, and gait abnormalities. Genetic mutations in heat shock proteins have been linked to CMT2. Specifically, mutations in the heat shock protein B1 (HSPB1) gene encoding for heat shock protein 27 (Hsp27) have been linked to CMT2F and distal hereditary motor and sensory neuropathy type 2B (dHMSN2B) subtype. The goal of the study was to examine the role of an endogenous mutation in HSPB1 in vivo and to define the effects of this mutation on motor function and pathology in a novel animal model. As sphingolipids have been implicated in hereditary and sensory neuropathies, we examined sphingolipid metabolism in central and peripheral nervous tissues in 3-month-old HspS139F mice. Though sphingolipid levels were not altered in sciatic nerves from HspS139F mice, ceramides and deoxyceramides, as well as sphingomyelins (SMs) were elevated in brain tissues from HspS139F mice. Histology was utilized to further characterize HspS139F mice. HspS139F mice exhibited no alterations to the expression and phosphorylation of neurofilaments, or in the expression of acetylated α-tubulin in the brain or sciatic nerve. Interestingly, HspS139F mice demonstrated cerebellar demyelination. Locomotor function, grip strength and gait were examined to define the role of HspS139F in the clinical phenotypes associated with CMT2F. Gait analysis revealed no differences between HspWT and HspS139F mice. However, both coordination and grip strength were decreased in 3-month-old HspS139F mice. Together these data suggest that the endogenous S139F mutation in HSPB1 may serve as a mouse model for hereditary and sensory neuropathies such as CMT2F.
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Affiliation(s)
- Keila S Espinoza
- Department of Physiology, University of Arizona, Tucson, AZ 85721, USA
| | - Kyra N Hermanson
- Department of Physiology, University of Arizona, Tucson, AZ 85721, USA
| | - Cameron A Beard
- School of Nutritional Sciences and Wellness, University of Arizona, Tucson, AZ 85721, USA
| | - Nicholas U Schwartz
- Department of Neurology, Stanford University Medical Center, Stanford, CA 94304, USA
| | - Justin M Snider
- School of Nutritional Sciences and Wellness, University of Arizona, Tucson, AZ 85721, USA; University of Arizona Cancer Center, University of Arizona, Tucson, AZ 85721, USA
| | - Benjamin E Low
- Technology Evaluation and Development, The Jackson Laboratory, Bar Harbor, ME, USA; Genetic Resource Science, The Jackson Laboratory, Bar Harbor, ME, USA
| | - Michael V Wiles
- Technology Evaluation and Development, The Jackson Laboratory, Bar Harbor, ME, USA
| | - Yusuf A Hannun
- Department of Medicine and Stony Brook Cancer Center, Stony Brook, NY 11794, USA; Northport Veterans Affairs Medical Center, Northport, NY 11768, USA
| | - Lina M Obeid
- Department of Medicine and Stony Brook Cancer Center, Stony Brook, NY 11794, USA; Northport Veterans Affairs Medical Center, Northport, NY 11768, USA
| | - Ashley J Snider
- School of Nutritional Sciences and Wellness, University of Arizona, Tucson, AZ 85721, USA; University of Arizona Cancer Center, University of Arizona, Tucson, AZ 85721, USA.
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Holguin BA, Hildenbrand ZL, Bernal RA. Insights Into the Role of Heat Shock Protein 27 in the Development of Neurodegeneration. Front Mol Neurosci 2022; 15:868089. [PMID: 35431800 PMCID: PMC9005852 DOI: 10.3389/fnmol.2022.868089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 03/09/2022] [Indexed: 12/11/2022] Open
Abstract
Small heat shock protein 27 is a critically important chaperone, that plays a key role in several essential and varied physiological processes. These include thermotolerance, apoptosis, cytoskeletal dynamics, cell differentiation, protein folding, among others. Despite its relatively small size and intrinsically disordered termini, it forms large and polydisperse oligomers that are in equilibrium with dimers. This equilibrium is driven by transient interactions between the N-terminal region, the α-crystallin domain, and the C-terminal region. The continuous redistribution of binding partners results in a conformationally dynamic protein that allows it to adapt to different functions where substrate capture is required. However, the intrinsic disorder of the amino and carboxy terminal regions and subsequent conformational variability has made structural investigations challenging. Because heat shock protein 27 is critical for so many key cellular functions, it is not surprising that it also has been linked to human disease. Charcot-Marie-Tooth and distal hereditary motor neuropathy are examples of neurodegenerative disorders that arise from single point mutations in heat shock protein 27. The development of possible treatments, however, depends on our understanding of its normal function at the molecular level so we might be able to understand how mutations manifest as disease. This review will summarize recent reports describing investigations into the structurally elusive regions of Hsp27. Recent insights begin to provide the required context to explain the relationship between a mutation and the resulting loss or gain of function that leads to Charcot-Marie Tooth disease and distal hereditary motor neuropathy.
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Li PH, Cai YJ, Zhu XL, Yang JDH, Yang SQ, Huang W, Wei SN, Zhou S, Wei JG, Qin QW, Sun HY. Epinephelus coioides Hsp27 negatively regulates innate immune response and apoptosis induced by Singapore grouper iridovirus (SGIV) infection. FISH & SHELLFISH IMMUNOLOGY 2022; 120:470-480. [PMID: 34933091 DOI: 10.1016/j.fsi.2021.12.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 12/12/2021] [Accepted: 12/13/2021] [Indexed: 06/14/2023]
Abstract
Heat shock proteins (Hsps) are important for maintaining protein homeostasis and cell survival. In this study, Hsp27 of Epinephelus coioides, an economically important marine fish in China and Southeast Asian countries, was characterized. E. coioides Hsp27 contains the consered ACD_HspB1_like domain and three p38 MAPK phosphorylation sites, located at Thr-13, Thr-60 and Ser-167. E. coioides Hsp27 was distributed in both the cytoplasm and nucleus, its mRNA was detected in all 14 tissues examined, and its expression was up-regulated after challenge with Singapore grouper iridovirus (SGIV), an important E. coioides pathogen. Over-expression of E. coioides Hsp27 significantly upregulated the expressions of the key SGIV genes (VP19, LITAF, MCP, and ICP18), downgraded the expressions of the E. coioides immune factors (IRF3, IRF7, ISG15, and TRAF6) and proinflammatory factors (TNF-α, IL-8), downgraded the activation of nuclear factor kappa-B (NF-κB) and activator protein-1 (AP-1), and substantially inhibited the cell apoptosis induced by SGIV infection. These data illustrated that E. coioides Hsp27 might be involved in SGIV infection by negatively regulating the innate immune response.
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Affiliation(s)
- Pin-Hong Li
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China
| | - Yi-Jie Cai
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China
| | - Xiang-Long Zhu
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China
| | - Jia-Deng-Hui Yang
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China
| | - Shi-Qi Yang
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China
| | - Wei Huang
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China
| | - Shi-Na Wei
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China
| | - Sheng Zhou
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China
| | - Jing-Guang Wei
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China
| | - Qi-Wei Qin
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China; Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai, 519000, PR China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266000, PR China.
| | - Hong-Yan Sun
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China.
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Greenbaum L, Ben‐David M, Nikitin V, Gera O, Barel O, Hersalis‐Eldar A, Shamash J, Shimshoviz N, Reznik‐Wolf H, Shohat M, Dominissini D, Pras E, Dori A. Early and late manifestations of neuropathy due to HSPB1 mutation in the Jewish Iranian population. Ann Clin Transl Neurol 2021; 8:1260-1268. [PMID: 33973728 PMCID: PMC8164855 DOI: 10.1002/acn3.51362] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 03/04/2021] [Accepted: 03/16/2021] [Indexed: 12/24/2022] Open
Abstract
OBJECTIVE Mutations in the HSPB1 gene are associated with a distal hereditary motor neuropathy type 2 (dHMN2) or Charcot-Marie-Tooth disease type 2F (CMT2F), usually with autosomal dominant inheritance. This study aimed to describe the phenotype of the HSPB1 c.407G>T (p.Arg136Leu) mutation at early and late stages of the disease course. METHODS We identified this mutation (previously reported in patients from Italy) in a heterozygous state, among 14 individuals from eight families of Jewish Iranian descent. The clinical, electrophysiological and ultrasonographic features were evaluated during early (less than 5 years, N = 9) or late disease course (N = 5). RESULTS The majority of subjects were males with a mean age at onset of 43.4 years (range 21-67). Common initial symptoms were gait imbalance, distal (often asymmetric) lower limb weakness and feet numbness. Neurological examination in early disease course showed distal lower extremity weakness in nearly all cases, and absent Achilles tendon reflex in about half. A minority had distal loss of pain, vibration or position sensation. These findings were more prevalent in late disease stage. Electrodiagnostic studies demonstrated a length-dependent axonal motor neuropathy, with typical preferential involvement of the tibial nerve. Muscle ultrasound showed a corresponding length-dependent increase of homogeneous echo-intensity, most noticeably in the gastrocnemius. One patient had a dual diagnosis of CMT2F and CMT2W. INTERPRETATION The HSPB1 c.407G>G (p.Arg136Leu) mutation causes an adult-onset, predominantly motor, axonal neuropathy in individuals of Jewish Iranian descent. Variable manifestations are noticed, and sensory involvement is more prominent in prolonged disease duration.
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Affiliation(s)
- Lior Greenbaum
- The Danek Gertner Institute of Human GeneticsSheba Medical CenterTel HashomerIsrael
- The Joseph Sagol Neuroscience CenterSheba Medical CenterTel HashomerIsrael
- Sackler Faculty of MedicineTel Aviv UniversityTel AvivIsrael
| | - Merav Ben‐David
- Department of NeurologySheba Medical CenterTel HashomerIsrael
| | - Vera Nikitin
- Department of NeurologySheba Medical CenterTel HashomerIsrael
| | - Orna Gera
- Sackler Faculty of MedicineTel Aviv UniversityTel AvivIsrael
- Department of NeurologySheba Medical CenterTel HashomerIsrael
| | - Ortal Barel
- The Genomic UnitSheba Cancer Research Center, Sheba Medical CenterTel HashomerIsrael
- Wohl Institute of Translational MedicineSheba Medical CenterTel HashomerIsrael
| | | | - Jana Shamash
- The Danek Gertner Institute of Human GeneticsSheba Medical CenterTel HashomerIsrael
| | - Noam Shimshoviz
- The Genomic UnitSheba Cancer Research Center, Sheba Medical CenterTel HashomerIsrael
- Wohl Institute of Translational MedicineSheba Medical CenterTel HashomerIsrael
| | - Haike Reznik‐Wolf
- The Danek Gertner Institute of Human GeneticsSheba Medical CenterTel HashomerIsrael
| | - Mordechai Shohat
- Sackler Faculty of MedicineTel Aviv UniversityTel AvivIsrael
- The Genomic UnitSheba Cancer Research Center, Sheba Medical CenterTel HashomerIsrael
- Wohl Institute of Translational MedicineSheba Medical CenterTel HashomerIsrael
| | - Dan Dominissini
- Sackler Faculty of MedicineTel Aviv UniversityTel AvivIsrael
- The Genomic UnitSheba Cancer Research Center, Sheba Medical CenterTel HashomerIsrael
- Wohl Institute of Translational MedicineSheba Medical CenterTel HashomerIsrael
| | - Elon Pras
- The Danek Gertner Institute of Human GeneticsSheba Medical CenterTel HashomerIsrael
- Sackler Faculty of MedicineTel Aviv UniversityTel AvivIsrael
| | - Amir Dori
- Sackler Faculty of MedicineTel Aviv UniversityTel AvivIsrael
- Department of NeurologySheba Medical CenterTel HashomerIsrael
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Chen J, Liu X, Xu Y, Fan D. [Rare variants of HSPB1 are probably associated with amyotrophic lateral sclerosis]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2021; 41:75-78. [PMID: 33509756 DOI: 10.12122/j.issn.1673-4254.2021.01.10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVE To explore the association between rare HSPB1 variants and amyotrophic lateral sclerosis (ALS). METHODS We performed next-generation sequencing for 166 Chinese ALS patients to screen for possible pathogenic rare variants of HSPB1. The control individuals were obtained from 1000 Genome Project and an in-house whole-exome sequencing database. The Sequence Kernel Association Test (SKAT) and the SKAT-optimal test (SKAT-O) were used to identify the association between rare HSPB1 variants and ALS. RESULTS We identified 3 possible pathogenic rare variants of HSPB1 (all were missenses), including c.379C>T (p.R127W), c.446A>C (p.D149A) and c.451A>C (p.T151P). Compared with 1000 Genome Project, SKAT p=3.61×10-7 and SKAT-O p=1.62×10-6; while compared with the in-house database, SKAT p=9.99×10-4, SKAT-O p= 1.80×10-3. We analyzed the phenotypes of rare HSPB1 variant carriers and found no specific clinical characteristics associated with these variants. CONCLUSIONS Rare variants of HSPB1 are probably associated with the pathogenesis of ALS.
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Affiliation(s)
- Junyi Chen
- Department of Neurology, Peking University Third Hospital, Beijing 100191, China
| | - Xiangyi Liu
- Department of Neurology, Peking University Third Hospital, Beijing 100191, China
| | - Yingsheng Xu
- Department of Neurology, Peking University Third Hospital, Beijing 100191, China
| | - Dongsheng Fan
- Department of Neurology, Peking University Third Hospital, Beijing 100191, China
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Chung KW, Kim JS, Lee KS. A Database of Caenorhabditis elegans Locomotion and Body Posture Phenotypes for the Peripheral Neuropathy Model. Mol Cells 2020; 43:880-888. [PMID: 33115980 PMCID: PMC7604027 DOI: 10.14348/molcells.2020.0178] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/06/2020] [Accepted: 10/07/2020] [Indexed: 12/17/2022] Open
Abstract
Inherited peripheral neuropathy is a heterogeneous group of peripheral neurodegenerative disorders including Charcot-Marie-Tooth disease. Many peripheral neuropathies often accompany impaired axonal construction and function. To study the molecular and cellular basis of axon-defective peripheral neuropathy, we explore the possibility of using Caenorhabditis elegans, a powerful nematode model equipped with a variety of genetics and imaging tools. In search of potential candidates of C. elegans peripheral neuropathy models, we monitored the movement and the body posture patterns of 26 C. elegans strains with disruption of genes associated with various peripheral neuropathies and compiled a database of their phenotypes. Our assay showed that movement features of the worms with mutations in HSPB1, MFN2, DYNC1H1, and KIF1B human homologues are significantly different from the control strain, suggesting they are viable candidates for C. elegans peripheral neuropathy models.
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Affiliation(s)
- Ki Wha Chung
- Department of Biological Sciences, Kongju National University, Gongju 32588, Korea
| | - Ju Seong Kim
- Department of Biological Sciences, Kongju National University, Gongju 32588, Korea
| | - Kyung Suk Lee
- Department of Physics Education, Kongju National University, Gongju 32588, Korea
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Taga A, Cornblath DR. A novel HSPB1 mutation associated with a late onset CMT2 phenotype: Case presentation and systematic review of the literature. J Peripher Nerv Syst 2020; 25:223-229. [PMID: 32639100 DOI: 10.1111/jns.12395] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 05/20/2020] [Accepted: 05/21/2020] [Indexed: 02/06/2023]
Abstract
Mutations in the HSPB1 gene are associated with Charcot-Marie-Tooth (CMT) disease type 2F (CMT2F) and distal hereditary motor neuropathy type 2 (dHMN2). More than 18 pathogenic mutations spanning across the whole HSPB1 gene have been reported. Three family members with a novel p.P57S (c.169C>T) HSPB1 mutation resulting in a late onset axonal neuropathy with heterogeneous clinical and electrophysiological features are detailed. We systematically reviewed published case reports and case series on HSPB1 mutations. While a genotype-phenotype correlation was not obvious, we identified a common phenotype, which included adult onset, male predominance, motor more frequently than sensory involvement, distal and symmetric distribution with preferential involvement of plantar flexors, and a motor and axonal electrophysiological picture.
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Affiliation(s)
- Arens Taga
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - David R Cornblath
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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Adalbert R, Kaieda A, Antoniou C, Loreto A, Yang X, Gilley J, Hoshino T, Uga K, Makhija MT, Coleman MP. Novel HDAC6 Inhibitors Increase Tubulin Acetylation and Rescue Axonal Transport of Mitochondria in a Model of Charcot-Marie-Tooth Type 2F. ACS Chem Neurosci 2020; 11:258-267. [PMID: 31845794 DOI: 10.1021/acschemneuro.9b00338] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Disruption of axonal transport causes a number of rare, inherited axonopathies and is heavily implicated in a wide range of more common neurodegenerative disorders, many of them age-related. Acetylation of α-tubulin is one important regulatory mechanism, influencing microtubule stability and motor protein attachment. Of several strategies so far used to enhance axonal transport, increasing microtubule acetylation through inhibition of the deacetylase enzyme histone deacetylase 6 (HDAC6) has been one of the most effective. Several inhibitors have been developed and tested in animal and cellular models, but better drug candidates are still needed. Here we report the development and characterization of two highly potent HDAC6 inhibitors, which show low toxicity, promising pharmacokinetic properties, and enhance microtubule acetylation in the nanomolar range. We demonstrate their capacity to rescue axonal transport of mitochondria in a primary neuronal culture model of the inherited axonopathy Charcot-Marie-Tooth Type 2F, caused by a dominantly acting mutation in heat shock protein beta 1.
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Affiliation(s)
- Robert Adalbert
- John van Geest Centre for Brain Repair, Department of Clinical Neurosciences, University of Cambridge, Forvie Site Robinson Way, Cambridge CB2 0PY, United Kingdom
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Szeged, Szeged H-6724, Hungary
| | - Akira Kaieda
- Takeda Pharmaceutical Company Limited, 26-1, Muraoka-higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Christina Antoniou
- John van Geest Centre for Brain Repair, Department of Clinical Neurosciences, University of Cambridge, Forvie Site Robinson Way, Cambridge CB2 0PY, United Kingdom
| | - Andrea Loreto
- John van Geest Centre for Brain Repair, Department of Clinical Neurosciences, University of Cambridge, Forvie Site Robinson Way, Cambridge CB2 0PY, United Kingdom
| | - Xiuna Yang
- John van Geest Centre for Brain Repair, Department of Clinical Neurosciences, University of Cambridge, Forvie Site Robinson Way, Cambridge CB2 0PY, United Kingdom
| | - Jonathan Gilley
- John van Geest Centre for Brain Repair, Department of Clinical Neurosciences, University of Cambridge, Forvie Site Robinson Way, Cambridge CB2 0PY, United Kingdom
| | - Takashi Hoshino
- Takeda Pharmaceutical Company Limited, 26-1, Muraoka-higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Keiko Uga
- Takeda Pharmaceutical Company Limited, 26-1, Muraoka-higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Mahindra T. Makhija
- Takeda Development Centre Europe Ltd., 61 Aldwych, London WC2B 4AE, United Kingdom
| | - Michael P. Coleman
- John van Geest Centre for Brain Repair, Department of Clinical Neurosciences, University of Cambridge, Forvie Site Robinson Way, Cambridge CB2 0PY, United Kingdom
- Babraham Institute, Babraham, Cambridge CB22 3AT, United Kingdom
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