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Wang HP, Singh S, Wong LC, Hsu CJ, Li SC, Lee SJ, Lee CH, Lee WT. Lacosamide Is a Novel Drug That Improves AGTPBP1 Knockout-Mediated Impairment of Neuronal and Dopaminergic Function. Mol Neurobiol 2025:10.1007/s12035-025-05016-y. [PMID: 40347376 DOI: 10.1007/s12035-025-05016-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2024] [Accepted: 04/29/2025] [Indexed: 05/12/2025]
Abstract
AGTPBP1 regulates microtubule stabilization through post-translational modification of alpha-tubulin. Mutations in the AGTPBP1 gene are associated with clinical phenotypes such as early postnatal cerebellar atrophy, ataxia, spasticity, and dystonia, highlighting its critical roles in both neurodevelopment and neurodegeneration. However, how AGTPBP1 affects neurite development and its function in dopaminergic neurons remains unclear. To investigate the role of AGTPBP1, we utilized both in vitro AGTPBP1 knockout (KO) cell models and zebrafish models. Our findings reveal that AGTPBP1 KO in cells leads to excessive neurite outgrowth and significantly increases expression of collapsin response mediator protein 2 (CRMP2). Additionally, AGTPBP1 KO results in mitochondrial dysfunction and a hyperdopaminergic state in differentiated neurons. In zebrafish, knockdown of AGTPBP1 caused reduced brain volume and impaired swimming behavior, indicating disrupted neurodevelopment and motor function. Given CRMP2's involvement in both cytoskeletal dynamics and mitochondrial activity, we tested lacosamide, a drug known to modulate CRMP2 expression and phosphorylation. Lacosamide treatment in vitro improved cell morphology and restored mitochondrial function, while in vivo, it rescued brain volume deficits and enhanced swimming performance in AGTPBP1-deficient zebrafish. In conclusion, AGTPBP1 knockout impairs neuronal differentiation, induces mitochondrial dysfunction, increases oxidative stress, and promotes a hyperdopaminergic state. Our study suggests that elevated CRMP2 expression may underlie the pathophysiology of cerebellar degeneration in AGTPBP1-related disorders. Targeting CRMP2 with lacosamide represents a promising therapeutic strategy for mitigating AGTPBP1-mediated neurodegeneration.
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Affiliation(s)
- Hsin-Pei Wang
- Department of Pediatrics, National Taiwan University Hospital, Yunlin Branch, Yunlin, 970, Taiwan
- National Taiwan University College of Medicine Graduate Institute of Clinical Medicine, Taipei, 100, Taiwan
| | - Shekhar Singh
- National Taiwan University College of Medicine, Taipei, 100, Taiwan
| | - Lee-Chin Wong
- National Taiwan University College of Medicine Graduate Institute of Clinical Medicine, Taipei, 100, Taiwan
- National Taiwan University College of Medicine, Taipei, 100, Taiwan
- Department of Pediatrics, National Taiwan University Hospital, Taipei, 100, Taiwan
- Department of Pediatric Neurology, National Taiwan University Children's Hospital, 8, Chung-Shan South Road, Taipei, 100, Taiwan
| | - Chia-Jui Hsu
- Department of Pediatrics, National Taiwan University Hospital, Hsinchu Branch, Hsinchu City, 300, Taiwan
| | - Shih-Chi Li
- Department of Life Science, National Taiwan University, Taipei, 100, Taiwan
| | - Shyh-Jye Lee
- Department of Life Science, National Taiwan University, Taipei, 100, Taiwan
| | - Chia-Hwa Lee
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, New Taipei City, 23564, Taiwan
| | - Wang-Tso Lee
- National Taiwan University College of Medicine, Taipei, 100, Taiwan.
- Department of Pediatrics, National Taiwan University Hospital, Taipei, 100, Taiwan.
- Department of Pediatric Neurology, National Taiwan University Children's Hospital, 8, Chung-Shan South Road, Taipei, 100, Taiwan.
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Deng X, Chen Y, Duan Q, Ding J, Wang Z, Wang J, Chen X, Zhou L, Zhao L. Genetic and molecular mechanisms of hydrocephalus. Front Mol Neurosci 2025; 17:1512455. [PMID: 39839745 PMCID: PMC11746911 DOI: 10.3389/fnmol.2024.1512455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2024] [Accepted: 12/20/2024] [Indexed: 01/23/2025] Open
Abstract
Hydrocephalus is a neurological condition caused by aberrant circulation and/or obstructed cerebrospinal fluid (CSF) flow after cerebral ventricle abnormal dilatation. In the past 50 years, the diagnosis and treatment of hydrocephalus have remained understudied and underreported, and little progress has been made with respect to prevention or treatment. Further research on the pathogenesis of hydrocephalus is essential for developing new diagnostic, preventive, and therapeutic strategies. Various genetic and molecular abnormalities contribute to the mechanisms of hydrocephalus, including gene deletions or mutations, the activation of cellular inflammatory signaling pathways, alterations in water channel proteins, and disruptions in iron metabolism. Several studies have demonstrated that modulating the expression of key proteins, including TGF-β, VEGF, Wnt, AQP, NF-κB, and NKCC, can significantly influence the onset and progression of hydrocephalus. This review summarizes and discusses key mechanisms that may be involved in the pathogenesis of hydrocephalus at both the genetic and molecular levels. While obstructive hydrocephalus can often be addressed by removing the obstruction, most cases require treatment strategies that involve merely slowing disease progression by correcting CSF circulation patterns. There have been few new research breakthroughs in the prevention and treatment of hydrocephalus.
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Affiliation(s)
- Xuehai Deng
- Department of Neurosurgery, Affiliated Hospital of North Sichuan Medical College, Nanchong, China
- School of Clinical Medicine, North Sichuan Medical College, Nanchong, China
| | - Yiqian Chen
- Department of Neurosurgery, Affiliated Hospital of North Sichuan Medical College, Nanchong, China
- School of Clinical Medicine, North Sichuan Medical College, Nanchong, China
| | - Qiyue Duan
- Department of Neurosurgery, Affiliated Hospital of North Sichuan Medical College, Nanchong, China
- School of Clinical Medicine, North Sichuan Medical College, Nanchong, China
| | - Jianlin Ding
- Department of Neurosurgery, Affiliated Hospital of North Sichuan Medical College, Nanchong, China
- School of Clinical Medicine, North Sichuan Medical College, Nanchong, China
| | - Zhong Wang
- Department of Neurosurgery, Affiliated Hospital of North Sichuan Medical College, Nanchong, China
- School of Clinical Medicine, North Sichuan Medical College, Nanchong, China
| | - Junchi Wang
- School of Dentistry, North Sichuan Medical College, Nanchong, China
| | - Xinlong Chen
- Department of Neurosurgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Liangxue Zhou
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, China
| | - Long Zhao
- Department of Neurosurgery, Affiliated Hospital of North Sichuan Medical College, Nanchong, China
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Karali M, García-García G, Kaminska K, AlTalbishi A, Cancellieri F, Testa F, Barillari MR, Panagiotou ES, Psillas G, Vaclavik V, Tran VH, Janeschitz-Kriegl L, Scholl HP, Salameh M, Barberán-Martínez P, Rodríguez-Muñoz A, Armengot M, Scarpato M, Zeuli R, Quinodoz M, Simonelli F, Rivolta C, Banfi S, Millán JM. Variants in the AGBL5 gene are responsible for autosomal recessive Retinitis pigmentosa with hearing loss. Eur J Hum Genet 2024:10.1038/s41431-024-01768-8. [PMID: 39672920 DOI: 10.1038/s41431-024-01768-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Revised: 10/29/2024] [Accepted: 12/04/2024] [Indexed: 12/15/2024] Open
Abstract
The AGBL5 gene encodes for the Cytoplasmic Carboxypeptidase 5 (CCP5), an α-tubulin deglutamylase that cleaves the γ-carboxyl-linked branching point of glutamylated tubulin. To date, pathogenic variants in AGBL5 have been associated only with isolated retinitis pigmentosa (RP). Hearing loss has not been reported in AGBL5-caused retinal disease. In this study, we performed exome sequencing in probands of eight unrelated families from Italy, Spain, Palestine, Switzerland, and Greece. All subjects had a clinical diagnosis of (suspected) Usher syndrome type II for the concurrent presence of RP and post-verbal sensorineural hearing loss (SNHL) that ranged from mild to moderate.We identified biallelic sequence variants in AGBL5 in all analysed subjects. Four of the identified variants were novel. The variants co-segregated with the retinal and auditory phenotypes in additional affected family members. We did not detect any causative variants in known deafness or Usher syndrome genes that could explain the patients' hearing loss. We therefore conclude that SNHL is a feature of a syndromic presentation of AGBL5 retinopathy. This study provides the first evidence that mutations in AGBL5 can cause syndromic RP forms associated with hearing loss, probably due to dysfunction of sensory cilia in the retina and the inner ear.
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Affiliation(s)
- Marianthi Karali
- Medical Genetics, Department of Precision Medicine, University of Campania 'Luigi Vanvitelli', 80138, Naples, Italy
- Eye Clinic, Multidisciplinary Department of Medical, Surgical and Dental Sciences, University of Campania 'Luigi Vanvitelli', 80131, Naples, Italy
| | - Gema García-García
- Molecular, Cellular, and Genomic Biomedicine Group, IIS-La Fe, Valencia, Spain
- Center for Rare Diseases (CIBERER), Madrid, Spain
- Joint Unit CIPF-IIS La Fe Molecular, Cellular, and Genomic Biomedicine, Valencia, Spain
| | - Karolina Kaminska
- Institute of Molecular and Clinical Ophthalmology Basel, 4031, Basel, Switzerland
| | | | | | - Francesco Testa
- Eye Clinic, Multidisciplinary Department of Medical, Surgical and Dental Sciences, University of Campania 'Luigi Vanvitelli', 80131, Naples, Italy
| | - Maria Rosaria Barillari
- Department of Mental and Physical Health and Preventive Medicine, University of Campania 'Luigi Vanvitelli', 80138, Naples, Italy
| | - Evangelia S Panagiotou
- 1st Department of Ophthalmology, Aristotle University of Thessaloniki, AHEPA Hospital, Thessaloniki, Greece
- Department of Ophthalmology, Ghent University Hospital, Ghent, Belgium
| | - George Psillas
- 1st Academic ENT Department, School of Medicine, Aristotle University of Thessaloniki, AHEPA Hospital, Thessaloniki, Greece
| | - Veronika Vaclavik
- Jules-Gonin Eye Hospital, Fondation Asile des Aveugles, University of Lausanne, 1004, Lausanne, Switzerland
| | - Viet H Tran
- Jules-Gonin Eye Hospital, Fondation Asile des Aveugles, University of Lausanne, 1004, Lausanne, Switzerland
- Centre for Gene Therapy and Regenerative Medicine, King's College London, London, UK
| | | | - Hendrik Pn Scholl
- Department of Ophthalmology, University of Basel, Basel, Switzerland
| | - Manar Salameh
- St John of Jerusalem Eye Hospital, Jerusalem, Palestine
| | - Pilar Barberán-Martínez
- Molecular, Cellular, and Genomic Biomedicine Group, IIS-La Fe, Valencia, Spain
- Joint Unit CIPF-IIS La Fe Molecular, Cellular, and Genomic Biomedicine, Valencia, Spain
| | | | - Miguel Armengot
- University and Polytechnic La Fe Hospital of Valencia, Valencia, Spain
| | - Margherita Scarpato
- Medical Genetics, Department of Precision Medicine, University of Campania 'Luigi Vanvitelli', 80138, Naples, Italy
| | - Roberta Zeuli
- Medical Genetics, Department of Precision Medicine, University of Campania 'Luigi Vanvitelli', 80138, Naples, Italy
| | - Mathieu Quinodoz
- Institute of Molecular and Clinical Ophthalmology Basel, 4031, Basel, Switzerland
- Department of Genetics and Genome Biology, University of Leicester, Leicester, UK
| | - Francesca Simonelli
- Eye Clinic, Multidisciplinary Department of Medical, Surgical and Dental Sciences, University of Campania 'Luigi Vanvitelli', 80131, Naples, Italy
| | - Carlo Rivolta
- Institute of Molecular and Clinical Ophthalmology Basel, 4031, Basel, Switzerland
- Department of Genetics and Genome Biology, University of Leicester, Leicester, UK
| | - Sandro Banfi
- Medical Genetics, Department of Precision Medicine, University of Campania 'Luigi Vanvitelli', 80138, Naples, Italy.
- Telethon Institute of Genetics and Medicine, 80078, Pozzuoli, Italy.
| | - José M Millán
- Molecular, Cellular, and Genomic Biomedicine Group, IIS-La Fe, Valencia, Spain.
- Center for Rare Diseases (CIBERER), Madrid, Spain.
- Joint Unit CIPF-IIS La Fe Molecular, Cellular, and Genomic Biomedicine, Valencia, Spain.
- 1st Department of Ophthalmology, Aristotle University of Thessaloniki, AHEPA Hospital, Thessaloniki, Greece.
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Wang K, Tang Z, Yang Y, Guo Y, Liu Z, Su Z, Li X, Xiao G. Zebrafish as a Model Organism for Congenital Hydrocephalus: Characteristics and Insights. Zebrafish 2024; 21:361-384. [PMID: 39510565 DOI: 10.1089/zeb.2024.0148] [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] [Indexed: 11/15/2024] Open
Abstract
Hydrocephalus is a cerebrospinal fluid-related disease that usually manifests as abnormal dilation of the ventricles, with a triad of clinical findings including walking difficulty, reduced attention span, and urinary frequency or incontinence. The onset of congenital hydrocephalus is closely related to mutations in genes that regulate brain development. Currently, our understanding of the mechanisms of congenital hydrocephalus remains limited, and the prognosis of existing treatments is unsatisfactory. Additionally, there are no suitable or dedicated model organisms for congenital hydrocephalus. Therefore, it is significant to determine the mechanism and develop special animal models of congenital hydrocephalus. Recently, zebrafish have emerged as a popular model organism in many fields, including developmental biology, genetics, and toxicology. Its genome shares high similarity with that of humans, and it has fast and low-cost reproduction. These advantages make it suitable for studying the pathogenesis and therapeutic approaches for various diseases, specifically congenital diseases. This study explored the possibility of using zebrafish as a model organism for congenital hydrocephalus. This review describes the characteristics of zebrafish and discusses specific congenital hydrocephalus models. The advantages and limitations of using zebrafish for hydrocephalus research are highlighted, and insights for further model development are provided.
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Affiliation(s)
- Kaiyue Wang
- Department of Neurosurgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, PR China
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, PR China
- Diagnosis and Treatment Center for Hydrocephalus, Xiangya Hospital, Central South University, Changsha, PR China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, PR China
| | - Zhi Tang
- Department of Neurosurgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, PR China
| | - Yijian Yang
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, PR China
- Diagnosis and Treatment Center for Hydrocephalus, Xiangya Hospital, Central South University, Changsha, PR China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, PR China
| | - Yating Guo
- Department of Neurosurgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, PR China
- Diagnosis and Treatment Center for Hydrocephalus, Xiangya Hospital, Central South University, Changsha, PR China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, PR China
| | - Zhikun Liu
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, PR China
- Diagnosis and Treatment Center for Hydrocephalus, Xiangya Hospital, Central South University, Changsha, PR China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, PR China
| | - Zhangjie Su
- Department of Neurosurgery, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Hills Road, Cambridge, United Kingdom
| | - Xuejun Li
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, PR China
- Diagnosis and Treatment Center for Hydrocephalus, Xiangya Hospital, Central South University, Changsha, PR China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, PR China
| | - Gelei Xiao
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, PR China
- Diagnosis and Treatment Center for Hydrocephalus, Xiangya Hospital, Central South University, Changsha, PR China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, PR China
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5
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Nguyen TK, Baker S, Rodriguez JM, Arceri L, Wingert RA. Using Zebrafish to Study Multiciliated Cell Development and Disease States. Cells 2024; 13:1749. [PMID: 39513856 PMCID: PMC11545745 DOI: 10.3390/cells13211749] [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: 10/04/2024] [Revised: 10/20/2024] [Accepted: 10/21/2024] [Indexed: 11/16/2024] Open
Abstract
Multiciliated cells (MCCs) serve many important functions, including fluid propulsion and chemo- and mechanosensing. Diseases ranging from rare conditions to the recent COVID-19 global health pandemic have been linked to MCC defects. In recent years, the zebrafish has emerged as a model to investigate the biology of MCCs. Here, we review the major events in MCC formation including centriole biogenesis and basal body docking. Then, we discuss studies on the role of MCCs in diseases of the brain, respiratory, kidney and reproductive systems, as well as recent findings about the link between MCCs and SARS-CoV-2. Next, we explore why the zebrafish is a useful model to study MCCs and provide a comprehensive overview of previous studies of genetic components essential for MCC development and motility across three major tissues in the zebrafish: the pronephros, brain ependymal cells and nasal placode. Taken together, here we provide a cohesive summary of MCC research using the zebrafish and its future potential for expanding our understanding of MCC-related disease states.
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Affiliation(s)
- Thanh Khoa Nguyen
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN 46556, USA; (S.B.); (J.-M.R.); (L.A.)
| | | | | | | | - Rebecca A. Wingert
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN 46556, USA; (S.B.); (J.-M.R.); (L.A.)
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Liu XY, Song X, Czosnyka M, Robba C, Czosnyka Z, Summers JL, Yu HJ, Gao GY, Smielewski P, Guo F, Pang MJ, Ming D. Congenital hydrocephalus: a review of recent advances in genetic etiology and molecular mechanisms. Mil Med Res 2024; 11:54. [PMID: 39135208 PMCID: PMC11318184 DOI: 10.1186/s40779-024-00560-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Accepted: 07/28/2024] [Indexed: 08/15/2024] Open
Abstract
The global prevalence rate for congenital hydrocephalus (CH) is approximately one out of every five hundred births with multifaceted predisposing factors at play. Genetic influences stand as a major contributor to CH pathogenesis, and epidemiological evidence suggests their involvement in up to 40% of all cases observed globally. Knowledge about an individual's genetic susceptibility can significantly improve prognostic precision while aiding clinical decision-making processes. However, the precise genetic etiology has only been pinpointed in fewer than 5% of human instances. More occurrences of CH cases are required for comprehensive gene sequencing aimed at uncovering additional potential genetic loci. A deeper comprehension of its underlying genetics may offer invaluable insights into the molecular and cellular basis of this brain disorder. This review provides a summary of pertinent genes identified through gene sequencing technologies in humans, in addition to the 4 genes currently associated with CH (two X-linked genes L1CAM and AP1S2, two autosomal recessive MPDZ and CCDC88C). Others predominantly participate in aqueduct abnormalities, ciliary movement, and nervous system development. The prospective CH-related genes revealed through animal model gene-editing techniques are further outlined, focusing mainly on 4 pathways, namely cilia synthesis and movement, ion channels and transportation, Reissner's fiber (RF) synthesis, cell apoptosis, and neurogenesis. Notably, the proper functioning of motile cilia provides significant impulsion for cerebrospinal fluid (CSF) circulation within the brain ventricles while mutations in cilia-related genes constitute a primary cause underlying this condition. So far, only a limited number of CH-associated genes have been identified in humans. The integration of genotype and phenotype for disease diagnosis represents a new trend in the medical field. Animal models provide insights into the pathogenesis of CH and contribute to our understanding of its association with related complications, such as renal cysts, scoliosis, and cardiomyopathy, as these genes may also play a role in the development of these diseases. Genes discovered in animals present potential targets for new treatments but require further validation through future human studies.
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Affiliation(s)
- Xiu-Yun Liu
- Medical School, Tianjin University, Tianjin, 300072, China
- State Key Laboratory of Advanced Medical Materials and Devices, Tianjin University, Tianjin, 300072, China
- Haihe Laboratory of Brain-Computer Interaction and Human-Machine Integration, Tianjin, 300380, China
- School of Pharmaceutical Science and Technology, Tianjin University, 300072, Tianjin, China
| | - Xin Song
- Medical School, Tianjin University, Tianjin, 300072, China
| | - Marek Czosnyka
- Department of Clinical Neurosciences, Addenbrooke's Hospital, University of Cambridge, Cambridge, CB2 0QQ, UK
| | - Chiara Robba
- San Martino Policlinico Hospital, IRCCS for Oncology and Neuroscience, 16132, Genoa, Italy
| | - Zofia Czosnyka
- Department of Clinical Neurosciences, Addenbrooke's Hospital, University of Cambridge, Cambridge, CB2 0QQ, UK
| | - Jennifer Lee Summers
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University, Baltimore, MD, 21287, USA
| | - Hui-Jie Yu
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - Guo-Yi Gao
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China
| | - Peter Smielewski
- Department of Clinical Neurosciences, Addenbrooke's Hospital, University of Cambridge, Cambridge, CB2 0QQ, UK
| | - Fang Guo
- Department of Neurosurgery, Tianjin Huanhu Hospital, Tianjin, 300350, China
| | - Mei-Jun Pang
- Medical School, Tianjin University, Tianjin, 300072, China.
| | - Dong Ming
- Medical School, Tianjin University, Tianjin, 300072, China.
- State Key Laboratory of Advanced Medical Materials and Devices, Tianjin University, Tianjin, 300072, China.
- Haihe Laboratory of Brain-Computer Interaction and Human-Machine Integration, Tianjin, 300380, China.
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7
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Wang Y, Zhang Y, Guo X, Zheng Y, Zhang X, Feng S, Wu HY. CCP5 and CCP6 retain CP110 and negatively regulate ciliogenesis. BMC Biol 2023; 21:124. [PMID: 37226238 DOI: 10.1186/s12915-023-01622-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 05/09/2023] [Indexed: 05/26/2023] Open
Abstract
BACKGROUND The axonemal microtubules of primary cilium undergo a conserved protein posttranslational modification (PTM) - polyglutamylation. This reversible procedure is processed by tubulin tyrosine ligase-like polyglutamylases to form secondary polyglutamate side chains, which are metabolized by the 6-member cytosolic carboxypeptidase (CCP) family. Although polyglutamylation modifying enzymes have been linked to ciliary architecture and motility, it was unknown whether they also play a role in ciliogenesis. RESULTS In this study, we found that CCP5 expression is transiently downregulated upon the initiation of ciliogenesis, but recovered after cilia are formed. Overexpression of CCP5 inhibited ciliogenesis, suggesting that a transient downregulation of CCP5 expression is required for ciliation initiation. Interestingly, the inhibitory effect of CCP5 on ciliogenesis does not rely on its enzyme activity. Among other 3 CCP members tested, only CCP6 can similarly suppress ciliogenesis. Using CoIP-MS analysis, we identified a protein that potentially interacts with CCP - CP110, a known negative regulator of ciliogenesis, whose degradation at the distal end of mother centriole permits cilia assembly. We found that both CCP5 and CCP6 can modulate CP110 level. Particularly, CCP5 interacts with CP110 through its N-terminus. Loss of CCP5 or CCP6 led to the disappearance of CP110 at the mother centriole and abnormally increased ciliation in cycling RPE-1 cells. Co-depletion of CCP5 and CCP6 synergized this abnormal ciliation, suggesting their partially overlapped function in suppressing cilia formation in cycling cells. In contrast, co-depletion of the two enzymes did not further increase the length of cilia, although CCP5 and CCP6 differentially regulate polyglutamate side-chain length of ciliary axoneme and both contribute to limiting cilia length, suggesting that they may share a common pathway in cilia length control. Through inducing the overexpression of CCP5 or CCP6 at different stages of ciliogenesis, we further demonstrated that CCP5 or CCP6 inhibited cilia formation before ciliogenesis, while shortened the length of cilia after cilia formation. CONCLUSION These findings reveal the dual role of CCP5 and CCP6. In addition to regulating cilia length, they also retain CP110 level to suppress cilia formation in cycling cells, pointing to a novel regulatory mechanism for ciliogenesis mediated by demodifying enzymes of a conserved ciliary PTM, polyglutamylation.
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Affiliation(s)
- Yujuan Wang
- School of Pharmaceutical Science and Technology, Tianjin University, 92 Weijin Road, Building 24, Room 417-8, Tianjin, 300072, China
| | - Yuan Zhang
- School of Pharmaceutical Science and Technology, Tianjin University, 92 Weijin Road, Building 24, Room 417-8, Tianjin, 300072, China
| | - Xinyu Guo
- School of Pharmaceutical Science and Technology, Tianjin University, 92 Weijin Road, Building 24, Room 417-8, Tianjin, 300072, China
| | - Yiqiang Zheng
- School of Pharmaceutical Science and Technology, Tianjin University, 92 Weijin Road, Building 24, Room 417-8, Tianjin, 300072, China
| | - Xinjie Zhang
- School of Pharmaceutical Science and Technology, Tianjin University, 92 Weijin Road, Building 24, Room 417-8, Tianjin, 300072, China
| | - Shanshan Feng
- Key Laboratory of Regenerative Medicine, Ministry of Education, Department of Developmental and Regenerative Biology, Jinan University, Guangzhou, 51063, China
| | - Hui-Yuan Wu
- School of Pharmaceutical Science and Technology, Tianjin University, 92 Weijin Road, Building 24, Room 417-8, Tianjin, 300072, China.
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8
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Rodriguez-Calado S, Van Damme P, Avilés FX, Candiota AP, Tanco S, Lorenzo J. Proximity Mapping of CCP6 Reveals Its Association with Centrosome Organization and Cilium Assembly. Int J Mol Sci 2023; 24:ijms24021273. [PMID: 36674791 PMCID: PMC9867282 DOI: 10.3390/ijms24021273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/02/2023] [Accepted: 01/03/2023] [Indexed: 01/10/2023] Open
Abstract
The cytosolic carboxypeptidase 6 (CCP6) catalyzes the deglutamylation of polyglutamate side chains, a post-translational modification that affects proteins such as tubulins or nucleosome assembly proteins. CCP6 is involved in several cell processes, such as spermatogenesis, antiviral activity, embryonic development, and pathologies like renal adenocarcinoma. In the present work, the cellular role of CCP6 has been assessed by BioID, a proximity labeling approach for mapping physiologically relevant protein-protein interactions (PPIs) and bait proximal proteins by mass spectrometry. We used HEK 293 cells stably expressing CCP6-BirA* to identify 37 putative interactors of this enzyme. This list of CCP6 proximal proteins displayed enrichment of proteins associated with the centrosome and centriolar satellites, indicating that CCP6 could be present in the pericentriolar material. In addition, we identified cilium assembly-related proteins as putative interactors of CCP6. In addition, the CCP6 proximal partner list included five proteins associated with the Joubert syndrome, a ciliopathy linked to defects in polyglutamylation. Using the proximity ligation assay (PLA), we show that PCM1, PIBF1, and NudC are true CCP6 physical interactors. Therefore, the BioID methodology confirms the location and possible functional role of CCP6 in centrosomes and centrioles, as well as in the formation and maintenance of primary cilia.
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Affiliation(s)
- Sergi Rodriguez-Calado
- Institut de Biotecnologia i Biomedicina, Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain
| | - Petra Van Damme
- iRIP Unit, Laboratory of Microbiology, Department of Biochemistry and Microbiology, Ghent University, K. L. Ledeganckstraat 35, 9000 Ghent, Belgium
| | - Francesc Xavier Avilés
- Institut de Biotecnologia i Biomedicina, Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain
| | - Ana Paula Candiota
- Institut de Biotecnologia i Biomedicina, Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain
- Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 08193 Cerdanyola del Vallès, Barcelona, Spain
| | - Sebastian Tanco
- Institut de Biotecnologia i Biomedicina, Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain
- Correspondence: (S.T.); (J.L.); Tel.: +34-93-586-8938 (S.T.); +34-93-586-8957 (J.L.)
| | - Julia Lorenzo
- Institut de Biotecnologia i Biomedicina, Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain
- Correspondence: (S.T.); (J.L.); Tel.: +34-93-586-8938 (S.T.); +34-93-586-8957 (J.L.)
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9
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Wu HY, Rong Y, Bansal PK, Wei P, Guo H, Morgan JI. TTLL1 and TTLL4 polyglutamylases are required for the neurodegenerative phenotypes in pcd mice. PLoS Genet 2022; 18:e1010144. [PMID: 35404950 PMCID: PMC9022812 DOI: 10.1371/journal.pgen.1010144] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 04/21/2022] [Accepted: 03/14/2022] [Indexed: 02/01/2023] Open
Abstract
Polyglutamylation is a dynamic posttranslational modification where glutamate residues are added to substrate proteins by 8 tubulin tyrosine ligase-like (TTLL) family members (writers) and removed by the 6 member Nna1/CCP family of carboxypeptidases (erasers). Genetic disruption of polyglutamylation leading to hyperglutamylation causes neurodegenerative phenotypes in humans and animal models; the best characterized being the Purkinje cell degeneration (pcd) mouse, a mutant of the gene encoding Nna1/CCP1, the prototypic eraser. Emphasizing the functional importance of the balance between glutamate addition and elimination, loss of TTLL1 prevents Purkinje cell degeneration in pcd. However, whether Ttll1 loss protects other vulnerable neurons in pcd, or if elimination of other TTLLs provides protection is largely unknown. Here using a mouse genetic rescue strategy, we characterized the contribution of Ttll1, 4, 5, 7, or 11 to the degenerative phenotypes in cerebellum, olfactory bulb and retinae of pcd mutants. Ttll1 deficiency attenuates Purkinje cell loss and function and reduces olfactory bulb mitral cell death and retinal photoreceptor degeneration. Moreover, degeneration of photoreceptors in pcd is preceded by impaired rhodopsin trafficking to the rod outer segment and likely represents the causal defect leading to degeneration as this too is rescued by elimination of TTLL1. Although TTLLs have similar catalytic properties on model substrates and several are highly expressed in Purkinje cells (e.g. TTLL5 and 7), besides TTLL1 only TTLL4 deficiency attenuated degeneration of Purkinje and mitral cells in pcd. Additionally, TTLL4 loss partially rescued photoreceptor degeneration and impaired rhodopsin trafficking. Despite their common properties, the polyglutamylation profile changes promoted by TTLL1 and TTLL4 deficiencies in pcd mice are very different. We also report that loss of anabolic TTLL5 synergizes with loss of catabolic Nna1/CCP1 to promote photoreceptor degeneration. Finally, male infertility in pcd is not rescued by loss of any Ttll. These data provide insight into the complexity of polyglutamate homeostasis and function in vivo and potential routes to ameliorate disorders caused by disrupted polyglutamylation.
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Affiliation(s)
- Hui-Yuan Wu
- Department of Developmental Neurobiology, St. Jude Children’s Research Hospital, Memphis, Tennessee, United States of America
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, China
| | - Yongqi Rong
- Department of Developmental Neurobiology, St. Jude Children’s Research Hospital, Memphis, Tennessee, United States of America
| | - Parmil K. Bansal
- Department of Developmental Neurobiology, St. Jude Children’s Research Hospital, Memphis, Tennessee, United States of America
| | - Peng Wei
- Department of Developmental Neurobiology, St. Jude Children’s Research Hospital, Memphis, Tennessee, United States of America
| | - Hong Guo
- Department of Developmental Neurobiology, St. Jude Children’s Research Hospital, Memphis, Tennessee, United States of America
| | - James I. Morgan
- Department of Developmental Neurobiology, St. Jude Children’s Research Hospital, Memphis, Tennessee, United States of America
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10
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Baltanás FC, Berciano MT, Santos E, Lafarga M. The Childhood-Onset Neurodegeneration with Cerebellar Atrophy (CONDCA) Disease Caused by AGTPBP1 Gene Mutations: The Purkinje Cell Degeneration Mouse as an Animal Model for the Study of this Human Disease. Biomedicines 2021; 9:biomedicines9091157. [PMID: 34572343 PMCID: PMC8464709 DOI: 10.3390/biomedicines9091157] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 09/01/2021] [Accepted: 09/02/2021] [Indexed: 12/20/2022] Open
Abstract
Recent reports have identified rare, biallelic damaging variants of the AGTPBP1 gene that cause a novel and documented human disease known as childhood-onset neurodegeneration with cerebellar atrophy (CONDCA), linking loss of function of the AGTPBP1 protein to human neurodegenerative diseases. CONDCA patients exhibit progressive cognitive decline, ataxia, hypotonia or muscle weakness among other clinical features that may be fatal. Loss of AGTPBP1 in humans recapitulates the neurodegenerative course reported in a well-characterised murine animal model harbouring loss-of-function mutations in the AGTPBP1 gene. In particular, in the Purkinje cell degeneration (pcd) mouse model, mutations in AGTPBP1 lead to early cerebellar ataxia, which correlates with the massive loss of cerebellar Purkinje cells. In addition, neurodegeneration in the olfactory bulb, retina, thalamus and spinal cord were also reported. In addition to neurodegeneration, pcd mice show behavioural deficits such as cognitive decline. Here, we provide an overview of what is currently known about the structure and functional role of AGTPBP1 and discuss the various alterations in AGTPBP1 that cause neurodegeneration in the pcd mutant mouse and humans with CONDCA. The sequence of neuropathological events that occur in pcd mice and the mechanisms governing these neurodegenerative processes are also reported. Finally, we describe the therapeutic strategies that were applied in pcd mice and focus on the potential usefulness of pcd mice as a promising model for the development of new therapeutic strategies for clinical trials in humans, which may offer potential beneficial options for patients with AGTPBP1 mutation-related CONDCA.
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Affiliation(s)
- Fernando C. Baltanás
- Lab.1, CIC-IBMCC, University of Salamanca-CSIC and CIBERONC, 37007 Salamanca, Spain;
- Correspondence: ; Tel.: +34-923294801
| | - María T. Berciano
- Department of Molecular Biology and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), University of Cantabria-IDIVAL, 39011 Santander, Spain;
| | - Eugenio Santos
- Lab.1, CIC-IBMCC, University of Salamanca-CSIC and CIBERONC, 37007 Salamanca, Spain;
| | - Miguel Lafarga
- Department of Anatomy and Cell Biology and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), University of Cantabria-IDIVAL, 39011 Santander, Spain;
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11
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Yang WT, Hong SR, He K, Ling K, Shaiv K, Hu J, Lin YC. The Emerging Roles of Axonemal Glutamylation in Regulation of Cilia Architecture and Functions. Front Cell Dev Biol 2021; 9:622302. [PMID: 33748109 PMCID: PMC7970040 DOI: 10.3389/fcell.2021.622302] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 02/11/2021] [Indexed: 12/14/2022] Open
Abstract
Cilia, which either generate coordinated motion or sense environmental cues and transmit corresponding signals to the cell body, are highly conserved hair-like structures that protrude from the cell surface among diverse species. Disruption of ciliary functions leads to numerous human disorders, collectively referred to as ciliopathies. Cilia are mechanically supported by axonemes, which are composed of microtubule doublets. It has been recognized for several decades that tubulins in axonemes undergo glutamylation, a post-translational polymodification, that conjugates glutamic acid chains onto the C-terminal tail of tubulins. However, the physiological roles of axonemal glutamylation were not uncovered until recently. This review will focus on how cells modulate glutamylation on ciliary axonemes and how axonemal glutamylation regulates cilia architecture and functions, as well as its physiological importance in human health. We will also discuss the conventional and emerging new strategies used to manipulate glutamylation in cilia.
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Affiliation(s)
- Wen-Ting Yang
- Institute of Molecular Medicine, National Tsing Hua University, HsinChu City, Taiwan
| | - Shi-Rong Hong
- Institute of Molecular Medicine, National Tsing Hua University, HsinChu City, Taiwan
| | - Kai He
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN, United States
| | - Kun Ling
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN, United States
| | - Kritika Shaiv
- Institute of Molecular Medicine, National Tsing Hua University, HsinChu City, Taiwan
| | - JingHua Hu
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN, United States
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, United States
- Mayo Clinic Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, United States
| | - Yu-Chun Lin
- Institute of Molecular Medicine, National Tsing Hua University, HsinChu City, Taiwan
- Department of Medical Science, National Tsing Hua University, HsinChu City, Taiwan
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12
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Alteration of Neural Stem Cell Functions in Ataxia and Male Sterility Mice: A Possible Role of β-Tubulin Glutamylation in Neurodegeneration. Cells 2021; 10:cells10010155. [PMID: 33466875 PMCID: PMC7830091 DOI: 10.3390/cells10010155] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 01/09/2021] [Accepted: 01/11/2021] [Indexed: 12/20/2022] Open
Abstract
Ataxia and Male Sterility (AMS) is a mutant mouse strain that contains a missense mutation in the coding region of Nna1, a gene that encodes a deglutamylase. AMS mice exhibit early cerebellar Purkinje cell degeneration and an ataxic phenotype in an autosomal recessive manner. To understand the underlying mechanism, we generated neuronal stem cell (NSC) lines from wild-type (NMW7), Nna1 mutation heterozygous (NME), and Nna1 mutation homozygous (NMO1) mouse brains. The NNA1 levels were decreased, and the glutamylated tubulin levels were increased in NMO1 cultures as well as in the cerebellum of AMS mice at both 15 and 30 days of age. However, total β-tubulin protein levels were not altered in the AMS cerebellum. In NMO1 neurosphere cultures, β-tubulin protein levels were increased without changes at the transcriptional level. NMO1 grew faster than other NSC lines, and some of the neurospheres were attached to the plate after 3 days. Immunostaining revealed that SOX2 and nestin levels were decreased in NMO1 neurospheres and that the neuronal differentiation potentials were reduced in NMO1 cells compared to NME or NMW7 cells. These results demonstrate that the AMS mutation decreased the NNA1 levels and increased glutamylation in the cerebellum of AMS mice. The observed changes in glutamylation might alter NSC properties and the neuron maturation process, leading to Purkinje cell death in AMS mice.
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13
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Abu Diab A, AlTalbishi A, Rosin B, Kanaan M, Kamal L, Swaroop A, Chowers I, Banin E, Sharon D, Khateb S. The combination of whole-exome sequencing and clinical analysis allows better diagnosis of rare syndromic retinal dystrophies. Acta Ophthalmol 2019; 97:e877-e886. [PMID: 30925032 PMCID: PMC11377105 DOI: 10.1111/aos.14095] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 03/03/2019] [Indexed: 01/05/2023]
Abstract
PURPOSE To identify the accurate clinical diagnosis of rare syndromic inherited retinal diseases (IRDs) based on the combination of clinical and genetic analyses. METHODS Four unrelated families with various autosomal recessive syndromic inherited retinal diseases were genetically investigated using whole-exome sequencing (WES). RESULTS Two affected subjects in family MOL0760 presented with a distinctive combination of short stature, developmental delay, congenital mental retardation, microcephaly, facial dysmorphism and retinitis pigmentosa (RP). Subjects were clinically diagnosed with suspected Kabuki syndrome. WES revealed a homozygous nonsense mutation (c.5492dup, p.Asn1831Lysfs*8) in VPS13B that is known to cause Cohen syndrome. The index case of family MOL1514 presented with both RP and liver dysfunction, suspected initially to be related. WES identified a homozygous frameshift mutation (c.1787_1788del, p.His596Argfs*47) in AGBL5, associated with nonsyndromic RP. The MOL1592 family included three affected subjects with crystalline retinopathy, skin ichthyosis, short stature and congenital adrenal hypoplasia, and were found to harbour a homozygous nonsense mutation (c.682C>T, p.Arg228Cys) in ALDH3A2, reported to cause Sjögren-Larsson syndrome (SLS). In the fourth family, SJ002, two siblings presented with hypotony, psychomotor delay, dysmorphic facial features, pathologic myopia, progressive external ophthalmoplegia and diffuse retinal atrophy. Probands were suspected to have atypical Kearns-Sayre syndrome, but were diagnosed with combined oxidative phosphorylation deficiency-20 due to a novel suspected missense variant (c.1691C>T, p.Ala564Val) in VARS2. CONCLUSION Our findings emphasize the important complement of WES and thorough clinical investigation in establishing precise clinical diagnosis. This approach constitutes the basis for personalized medicine in rare IRDs.
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Affiliation(s)
- Alaa Abu Diab
- Department of Ophthalmology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | | | - Boris Rosin
- Department of Ophthalmology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Moien Kanaan
- Hereditary Research Lab, Bethlehem University, Jerusalem, Israel
| | - Lara Kamal
- Hereditary Research Lab, Bethlehem University, Jerusalem, Israel
| | - Anand Swaroop
- Neurobiology-Neurodegeneration & Repair Laboratory, National Eye Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Itay Chowers
- Department of Ophthalmology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Eyal Banin
- Department of Ophthalmology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Dror Sharon
- Department of Ophthalmology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Samer Khateb
- Department of Ophthalmology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
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14
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Zhou Q, Gao H, Zhang Y, Fan G, Xu H, Zhai J, Xu W, Chen Z, Zhang H, Liu S, Niu Y, Li W, Li W, Lin H, Chen S. A chromosome‐level genome assembly of the giant grouper (
Epinephelus lanceolatus
) provides insights into its innate immunity and rapid growth. Mol Ecol Resour 2019; 19:1322-1332. [DOI: 10.1111/1755-0998.13048] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Revised: 05/24/2019] [Accepted: 05/31/2019] [Indexed: 01/23/2023]
Affiliation(s)
- Qian Zhou
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences (CAFS) Qingdao China
- Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (PNLM) Qingdao China
| | | | - Yong Zhang
- Southern Laboratory of Ocean Science and Engineering Zhuhai China
| | | | - Hao Xu
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences (CAFS) Qingdao China
| | | | - Wenteng Xu
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences (CAFS) Qingdao China
- Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (PNLM) Qingdao China
| | - Zhangfan Chen
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences (CAFS) Qingdao China
- Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (PNLM) Qingdao China
| | | | | | | | | | - Weiming Li
- Department of Fisheries and Wildlife Michigan State University East Lansing MI USA
| | - Haoran Lin
- Southern Laboratory of Ocean Science and Engineering Zhuhai China
| | - Songlin Chen
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences (CAFS) Qingdao China
- Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (PNLM) Qingdao China
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15
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Maimouni S, Lee MH, Sung YM, Hall M, Roy A, Ouaari C, Hwang YS, Spivak J, Glasgow E, Swift M, Patel J, Cheema A, Kumar D, Byers S. Tumor suppressor RARRES1 links tubulin deglutamylation to mitochondrial metabolism and cell survival. Oncotarget 2019; 10:1606-1624. [PMID: 30899431 PMCID: PMC6422194 DOI: 10.18632/oncotarget.26600] [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: 10/09/2018] [Accepted: 12/04/2018] [Indexed: 12/12/2022] Open
Abstract
RARRES1, a retinoic acid regulated carboxypeptidase inhibitor associated with fatty acid metabolism, stem cell differentiation and tumorigenesis is among the most commonly methylated loci in multiple cancers but has no known mechanism of action. Here we show that RARRES1 interaction with cytoplasmic carboxypeptidase 2 (CCP2) inhibits tubulin deglutamylation, which in turn regulates the mitochondrial voltage dependent anion channel (VDAC1), mitochondrial membrane potential, AMPK activation, energy balance and metabolically reprograms cells and zebrafish to a more energetic and anabolic phenotype. Depletion of RARRES1 also increases expression of stem cell markers, promotes anoikis, anchorage independent growth and insensitivity to multiple apoptotic stimuli. As depletion of CCP2 or inhibition of VDAC1 reverses the effects of RARRES1 depletion on energy balance and cell survival we conclude that RARRES1 modulation of CCP2-modulated tubulin-mitochondrial VDAC1 interactions is a fundamental regulator of cancer and stem cell metabolism and survival.
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Affiliation(s)
- Sara Maimouni
- Department of Biochemical, Molecular and Cellular Biology, Georgetown University, Washington, DC, USA
| | - Mi-Hye Lee
- Department of Oncology, Georgetown-Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC, USA
| | - You-Me Sung
- Department of Oncology, Georgetown-Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC, USA
| | - Michael Hall
- Department of Oncology, Georgetown-Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC, USA
| | - Arpita Roy
- University of the District of Columbia, Washington, DC, USA
| | - Chokri Ouaari
- Department of Oncology, Georgetown-Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC, USA.,University of the District of Columbia, Washington, DC, USA
| | - Yoo-Seok Hwang
- Cancer & Developmental Biology Laboratory, National Cancer Institute-Frederick, Frederick, MD, USA
| | - Justin Spivak
- Department of Oncology, Georgetown-Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC, USA
| | - Eric Glasgow
- Department of Oncology, Georgetown-Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC, USA
| | - Matthew Swift
- Department of Oncology, Georgetown-Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC, USA
| | - Jay Patel
- Department of Oncology, Georgetown-Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC, USA
| | - Amrita Cheema
- Department of Oncology, Georgetown-Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC, USA
| | - Deepak Kumar
- University of the District of Columbia, Washington, DC, USA
| | - Stephen Byers
- Department of Oncology, Georgetown-Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC, USA.,Department of Biochemical, Molecular and Cellular Biology, Georgetown University, Washington, DC, USA
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16
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Hong SR, Wang CL, Huang YS, Chang YC, Chang YC, Pusapati GV, Lin CY, Hsu N, Cheng HC, Chiang YC, Huang WE, Shaner NC, Rohatgi R, Inoue T, Lin YC. Spatiotemporal manipulation of ciliary glutamylation reveals its roles in intraciliary trafficking and Hedgehog signaling. Nat Commun 2018; 9:1732. [PMID: 29712905 PMCID: PMC5928066 DOI: 10.1038/s41467-018-03952-z] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Accepted: 03/22/2018] [Indexed: 12/22/2022] Open
Abstract
Tubulin post-translational modifications (PTMs) occur spatiotemporally throughout cells and are suggested to be involved in a wide range of cellular activities. However, the complexity and dynamic distribution of tubulin PTMs within cells have hindered the understanding of their physiological roles in specific subcellular compartments. Here, we develop a method to rapidly deplete tubulin glutamylation inside the primary cilia, a microtubule-based sensory organelle protruding on the cell surface, by targeting an engineered deglutamylase to the cilia in minutes. This rapid deglutamylation quickly leads to altered ciliary functions such as kinesin-2-mediated anterograde intraflagellar transport and Hedgehog signaling, along with no apparent crosstalk to other PTMs such as acetylation and detyrosination. Our study offers a feasible approach to spatiotemporally manipulate tubulin PTMs in living cells. Future expansion of the repertoire of actuators that regulate PTMs may facilitate a comprehensive understanding of how diverse tubulin PTMs encode ciliary as well as cellular functions. Tubulin post-translational modifications (PTMs) occur spatiotemporally throughout cells, therefore assessing the physiological roles in specific subcellular compartments has been challenging. Here the authors develop a method to rapidly deplete tubulin glutamylation inside the primary cilia by targeting an engineered deglutamylase to the axoneme.
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Affiliation(s)
- Shi-Rong Hong
- Institute of Molecular Medicine, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Cuei-Ling Wang
- Institute of Molecular Medicine, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Yao-Shen Huang
- Institute of Molecular Medicine, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Yu-Chen Chang
- Department of Life Science, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Ya-Chu Chang
- Institute of Molecular Medicine, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Ganesh V Pusapati
- Departments of Medicine and Biochemistry, Stanford University School of Medicine, Stanford, 94305, CA, USA
| | - Chun-Yu Lin
- Department of Medical Science, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Ning Hsu
- Institute of Molecular Medicine, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Hsiao-Chi Cheng
- Department of Medical Science, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Yueh-Chen Chiang
- Interdisciplinary Program of Science, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Wei-En Huang
- Department of Life Science, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Nathan C Shaner
- Department of Photobiology and Bioimaging, The Scintillon Institute, San Diego, 92121, CA, USA
| | - Rajat Rohatgi
- Departments of Medicine and Biochemistry, Stanford University School of Medicine, Stanford, 94305, CA, USA
| | - Takanari Inoue
- Department of Cell Biology, Center for Cell Dynamics, School of Medicine, Johns Hopkins University, Baltimore, 21205, MD, USA.
| | - Yu-Chun Lin
- Institute of Molecular Medicine, National Tsing Hua University, Hsinchu, 30013, Taiwan. .,Department of Medical Science, National Tsing Hua University, Hsinchu, 30013, Taiwan.
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17
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Ye B, Liu B, Hao L, Zhu X, Yang L, Wang S, Xia P, Du Y, Meng S, Huang G, Qin X, Wang Y, Yan X, Li C, Hao J, Zhu P, He L, Tian Y, Fan Z. Klf4 glutamylation is required for cell reprogramming and early embryonic development in mice. Nat Commun 2018; 9:1261. [PMID: 29593216 PMCID: PMC5871780 DOI: 10.1038/s41467-018-03008-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 01/10/2018] [Indexed: 12/20/2022] Open
Abstract
Temporal and spatial-specific regulation of pluripotency networks is largely dependent on the precise modifications of core transcription factors. Misregulation of glutamylation is implicated in severe physiological abnormalities. However, how glutamylation regulates cell reprogramming and pluripotency networks remains elusive. Here we show that cytosolic carboxypeptidases 1 (CCP1) or CCP6 deficiency substantially promotes induced pluripotent cell (iPSC) induction and pluripotency of embryonic stem cells (ESCs). Klf4 polyglutamylation at Glu381 by tubulin tyrosine ligase-like 4 (TTLL4) and TTLL1 during cell reprogramming impedes its lysine 48-linked ubiquitination and sustains Klf4 stability. Klf4-E381A knockin mice display impaired blastocyst development and embryonic lethality. Deletion of TTLL4 or TTLL1 abrogates cell reprogramming and early embryogenesis. Thus, Klf4 polyglutamylation plays a critical role in the regulation of cell reprogramming and pluripotency maintenance. Embryonic stem cell pluripotency depends upon precise regulation by a core transcription network. Here the authors show that polyglutamylation mediated stabilization of the transcription factor Klf4 by TTLL1 and TTLL4 promotes reprogramming, pluripotency and preimplantation embryonic development.
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Affiliation(s)
- Buqing Ye
- Key Laboratory of Infection and Immunity of CAS, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Benyu Liu
- Key Laboratory of Infection and Immunity of CAS, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Lu Hao
- Key Laboratory of Infection and Immunity of CAS, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaoxiao Zhu
- Laboratory Animal Center, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China.,Key Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Liuliu Yang
- Key Laboratory of Infection and Immunity of CAS, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shuo Wang
- Key Laboratory of Infection and Immunity of CAS, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Pengyan Xia
- Key Laboratory of Infection and Immunity of CAS, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Ying Du
- Key Laboratory of Infection and Immunity of CAS, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Shu Meng
- Laboratory Animal Center, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China.,Key Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Guanling Huang
- Key Laboratory of Infection and Immunity of CAS, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiwen Qin
- Key Laboratory of Infection and Immunity of CAS, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yanying Wang
- Key Laboratory of Infection and Immunity of CAS, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Xinlong Yan
- Key Laboratory of Infection and Immunity of CAS, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Chong Li
- Key Laboratory of Infection and Immunity of CAS, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Junfeng Hao
- Laboratory Animal Center, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Pingping Zhu
- Key Laboratory of Infection and Immunity of CAS, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Luyun He
- Key Laboratory of Infection and Immunity of CAS, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yong Tian
- Key Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China.
| | - Zusen Fan
- Key Laboratory of Infection and Immunity of CAS, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China. .,University of Chinese Academy of Sciences, Beijing, 100049, China.
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18
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Testero SA, Granados C, Fernández D, Gallego P, Covaleda G, Reverter D, Vendrell J, Avilés FX, Pallarès I, Mobashery S. Discovery of Mechanism-Based Inactivators for Human Pancreatic Carboxypeptidase A from a Focused Synthetic Library. ACS Med Chem Lett 2017; 8:1122-1127. [PMID: 29057062 DOI: 10.1021/acsmedchemlett.7b00346] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 09/22/2017] [Indexed: 12/22/2022] Open
Abstract
Metallocarboxypeptidases (MCPs) are involved in many biological processes such as fibrinolysis or inflammation, development, Alzheimer's disease, and various types of cancer. We describe the synthesis and kinetic characterization of a focused library of 22 thiirane- and oxirane-based potential mechanism-based inhibitors, which led to discovery of an inhibitor for the human pro-carboxypeptidase A1. Our structural analyses show that the thiirane-based small-molecule inhibitor penetrates the barrier of the pro-domain to bind within the active site. This binding leads to a chemical reaction that covalently modifies the catalytic Glu270. These results highlight the importance of combined structural, biophysical, and biochemical evaluation of inhibitors in design strategies for the development of spectroscopically nonsilent probes as effective beacons for in vitro, in cellulo, and/or in vivo localization in clinical and industrial applications.
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Affiliation(s)
- Sebastián A. Testero
- Department
of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Carla Granados
- Departament
de Bioquímica i Biologia Molecular, Facultat de Biociències,
and Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain
| | - Daniel Fernández
- Departament
de Bioquímica i Biologia Molecular, Facultat de Biociències,
and Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain
| | - Pablo Gallego
- Departament
de Bioquímica i Biologia Molecular, Facultat de Biociències,
and Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain
| | - Giovanni Covaleda
- Departament
de Bioquímica i Biologia Molecular, Facultat de Biociències,
and Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain
| | - David Reverter
- Departament
de Bioquímica i Biologia Molecular, Facultat de Biociències,
and Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain
| | - Josep Vendrell
- Departament
de Bioquímica i Biologia Molecular, Facultat de Biociències,
and Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain
| | - Francesc X. Avilés
- Departament
de Bioquímica i Biologia Molecular, Facultat de Biociències,
and Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain
| | - Irantzu Pallarès
- Departament
de Bioquímica i Biologia Molecular, Facultat de Biociències,
and Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain
| | - Shahriar Mobashery
- Department
of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
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19
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Suvarchala G, Philip GH. Toxicity of 3,5,6-trichloro-2-pyridinol tested at multiple stages of zebrafish (Danio rerio) development. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:15515-15523. [PMID: 27121015 DOI: 10.1007/s11356-016-6684-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Accepted: 04/11/2016] [Indexed: 06/05/2023]
Abstract
Organophosphate compounds (OP) are widely used throughout the world for pest control. 3,5,6-Trichloro-2-pyridinol (TCP) is a primary metabolite of two OP compounds namely CP and triclopyr. This study is carried out to know whether a metabolite of parent compound is doing well or harm to biota. The potential effect of TCP was evaluated on development as destabilization of any events transpiring during embryogenesis could be deleterious. To determine this, 4-hpf zebrafish embryos were exposed to five concentrations of TCP (200, 400, 600, 800, 1000 μg/L) or 99.5 % acetone (solvent control). Different early life-stage parameters were observed at four different developmental stages, 24, 48, 72 and 96 hpf. TCP-treated embryo/larvae showed increased mortality, delay in hatching time and decrease in percentage of hatched embryos. Reduction in heartbeat rate, blood flow and body and eye pigmentation was noticed in a dose-dependent manner. Pericardial and yolk sac edema were most severe malformations caused by TCP. Along with this crooked spine/notochord, tail deformation was noticed in hatched and unhatched embryos. The malformations observed provide a good starting point for examination of the molecular mechanisms that are affected during development by TCP. Results gain significance as TCP, which is a breakdown product, appears to be more toxic during development compared to parent compound, CP (our earlier publication).
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Affiliation(s)
- Gonuguntla Suvarchala
- Department of Zoology, Sri Krishnadevaraya University, Anantapuramu, 515003, AP, India
| | - Gundala Harold Philip
- Department of Zoology, Sri Krishnadevaraya University, Anantapuramu, 515003, AP, India.
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20
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Pamanji R, Bethu MS, Yashwanth B, Leelavathi S, Venkateswara Rao J. Developmental toxic effects of monocrotophos, an organophosphorous pesticide, on zebrafish (Danio rerio) embryos. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:7744-53. [PMID: 25604565 DOI: 10.1007/s11356-015-4120-8] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Accepted: 01/11/2015] [Indexed: 05/15/2023]
Abstract
The present study examined the response of zebrafish embryos exposed to different concentrations (10, 20, 30, 40, 50, and 60 mg/L) of monocrotophos under static conditions for 96 h. We found that mortality had occurred within 48 h at all test concentrations, later insignificant mortality was observed. Monocrotophos (MCP) can be rated as moderately toxic to the Zebrafish embryos with a 96-h median lethal concentration (LC50) of 37.44 ± 3.32 mg/L. In contrast, it greatly affected the development of zebrafish embryos by inducing several developmental abnormalities like pericardial edema, altered heart development, spinal and vertebral anomalies in a concentration-dependent manner. A significant percent reduction in length by 9-48% and heart beats by 18-51% was observed in hatchlings exposed to LC10 and LC50 concentrations at 96 h when compared to controls. The process of looping formation of heart at embryonic stage was greatly affected by the LC50 concentration of MCP. The neurotoxic potentiality of MCP was assessed by using a marker enzyme, acetylcholinesterase in both in vitro and in vivo experiments. MCP was found to be the most potent inhibitor of AChE in vitro with an IC50 value of 4.3 × 10(-4) M. The whole-body AChE enzyme activity in vivo was significantly inhibited during the exposure tenure with the maximum inhibition of 62% at 24 h.
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Affiliation(s)
- Rajesh Pamanji
- Biology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500 007, India
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21
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Pamanji R, Yashwanth B, Bethu MS, Leelavathi S, Ravinder K, Rao JV. Toxicity effects of profenofos on embryonic and larval development of Zebrafish (Danio rerio). ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2015; 39:887-897. [PMID: 25796049 DOI: 10.1016/j.etap.2015.02.020] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 02/24/2015] [Accepted: 02/27/2015] [Indexed: 06/04/2023]
Abstract
The aim of the present study was to evaluate the developmental toxicity of profenofos to early developing Zebrafish (Danio rerio) embryos (4h post fertilization) in a static system at 1.0 to 2.25mg/L. Median lethal concentrations (LC50) of profenofos at 24-h, 48-h, 72-h and 96-h were determined as 2.04, 1.58, 1.57 and 1.56 mg/L, respectively. The hatching of embryos were recorded at every 12h interval and the median hatching time (HT50) was also calculated for each concentration. In a separate set of experiments, 96-h LC10 (0.74 mg/L) and LC50 (1.56 mg/L) concentrations were used to assess the developmental toxicity in relation to behavior, morphology, and interactions with the targeted enzyme acetylcholinesterase. Live video-microscopy revealed that the profenofos exposed embryos exhibited an abnormal development, skeletal defects and altered heart morphology in a concentration-dependent manner, which leads to alterations in the swimming behavior of hatchlings at 144-h, which indicate that developing zebrafish are sensitive to profenofos.
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Affiliation(s)
- Rajesh Pamanji
- Biology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, India
| | - B Yashwanth
- Biology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, India
| | - M S Bethu
- Biology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, India
| | - S Leelavathi
- Biology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, India
| | - K Ravinder
- Zebrafish Laboratory, Centre for Cellular and Molecular Biology, Hyderabad 500 007, India
| | - J Venkateswara Rao
- Biology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, India.
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22
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Pathak N, Austin-Tse CA, Liu Y, Vasilyev A, Drummond IA. Cytoplasmic carboxypeptidase 5 regulates tubulin glutamylation and zebrafish cilia formation and function. Mol Biol Cell 2014; 25:1836-44. [PMID: 24743595 PMCID: PMC4055263 DOI: 10.1091/mbc.e13-01-0033] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Glutamylation is a functionally important tubulin posttranslational modification enriched on stable microtubules of neuronal axons, mitotic spindles, centrioles, and cilia. In vertebrates, balanced activities of tubulin glutamyl ligase and cytoplasmic carboxypeptidase deglutamylase enzymes maintain organelle- and cell type-specific tubulin glutamylation patterns. Tubulin glutamylation in cilia is regulated via restricted subcellular localization or expression of tubulin glutamyl ligases (ttlls) and nonenzymatic proteins, including the zebrafish TPR repeat protein Fleer/Ift70. Here we analyze the expression patterns of ccp deglutamylase genes during zebrafish development and the effects of ccp gene knockdown on cilia formation, morphology, and tubulin glutamylation. The deglutamylases ccp2, ccp5, and ccp6 are expressed in ciliated cells, whereas ccp1 expression is restricted to the nervous system. Only ccp5 knockdown increases cilia tubulin glutamylation, induces ciliopathy phenotypes, including axis curvature, hydrocephalus, and pronephric cysts, and disrupts multicilia motility, suggesting that Ccp5 is the principal tubulin deglutamylase that maintains functional levels of cilia tubulin glutamylation. The ability of ccp5 knockdown to restore cilia tubulin glutamylation in fleer/ift70 mutants and rescue pronephric multicilia formation in both fleer- and ift88-deficient zebrafish indicates that tubulin glutamylation is a key driver of ciliogenesis.
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Affiliation(s)
- Narendra Pathak
- Nephrology Division, Massachusetts General Hospital, Charlestown, MA 02129
| | | | - Yan Liu
- Nephrology Division, Massachusetts General Hospital, Charlestown, MA 02129
| | - Aleksandr Vasilyev
- Department of Pathology, Massachusetts General Hospital, Charlestown, MA 02129
| | - Iain A Drummond
- Nephrology Division, Massachusetts General Hospital, Charlestown, MA 02129Department of Genetics, Harvard Medical School, Boston, MA 02115
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23
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Berezniuk I, Lyons PJ, Sironi JJ, Xiao H, Setou M, Angeletti RH, Ikegami K, Fricker LD. Cytosolic carboxypeptidase 5 removes α- and γ-linked glutamates from tubulin. J Biol Chem 2013; 288:30445-30453. [PMID: 24022482 DOI: 10.1074/jbc.m113.497917] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Cytosolic carboxypeptidase 5 (CCP5) is a member of a subfamily of enzymes that cleave C-terminal and/or side chain amino acids from tubulin. CCP5 was proposed to selectively cleave the branch point of glutamylated tubulin, based on studies involving overexpression of CCP5 in cell lines and detection of tubulin forms with antisera. In the present study, we examined the activity of purified CCP5 toward synthetic peptides as well as soluble α- and β-tubulin and paclitaxel-stabilized microtubules using a combination of antisera and mass spectrometry to detect the products. Mouse CCP5 removes multiple glutamate residues and the branch point glutamate from the side chains of porcine brain α- and β-tubulin. In addition, CCP5 excised C-terminal glutamates from detyrosinated α-tubulin. The enzyme also removed multiple glutamate residues from side chains and C termini of paclitaxel-stabilized microtubules. CCP5 both shortens and removes side chain glutamates from synthetic peptides corresponding to the C-terminal region of β3-tubulin, whereas cytosolic carboxypeptidase 1 shortens the side chain without cleaving the peptides' γ-linked residues. The rate of cleavage of α linkages by CCP5 is considerably slower than that of removal of a single γ-linked glutamate residue. Collectively, our data show that CCP5 functions as a dual-functional deglutamylase cleaving both α- and γ-linked glutamate from tubulin.
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Affiliation(s)
- Iryna Berezniuk
- From the Departments of Molecular Pharmacology and; Neuroscience and
| | | | | | - Hui Xiao
- the Laboratory of Macromolecular Analysis and Proteomics, Albert Einstein College of Medicine, Bronx, New York 10461 and
| | - Mitsutoshi Setou
- the Department of Cell Biology and Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Hamamatsu 431-3192, Japan
| | - Ruth H Angeletti
- the Laboratory of Macromolecular Analysis and Proteomics, Albert Einstein College of Medicine, Bronx, New York 10461 and
| | - Koji Ikegami
- the Department of Cell Biology and Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Hamamatsu 431-3192, Japan
| | - Lloyd D Fricker
- From the Departments of Molecular Pharmacology and; Neuroscience and.
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