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Claus LR, Chen C, Stallworth J, Turner JL, Slaats GG, Hawks AL, Mabillard H, Senum SR, Srikanth S, Flanagan-Steet H, Louie RJ, Silver J, Lerner-Ellis J, Morel C, Mighton C, Sleutels F, van Slegtenhorst M, van Ham T, Brooks AS, Dorresteijn EM, Barakat TS, Dahan K, Demoulin N, Goffin EJ, Olinger E, Larsen M, Hertz JM, Lilien MR, Obeidová L, Seeman T, Stone HK, Kerecuk L, Gurgu M, Yousef Yengej FA, Ammerlaan CME, Rookmaaker MB, Hanna C, Rogers RC, Duran K, Peters E, Sayer JA, van Haaften G, Harris PC, Ling K, Mason JM, van Eerde AM, Steet R. Certain heterozygous variants in the kinase domain of the serine/threonine kinase NEK8 can cause an autosomal dominant form of polycystic kidney disease. Kidney Int 2023; 104:995-1007. [PMID: 37598857 PMCID: PMC10592035 DOI: 10.1016/j.kint.2023.07.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 07/22/2023] [Accepted: 07/28/2023] [Indexed: 08/22/2023]
Abstract
Autosomal dominant polycystic kidney disease (ADPKD) resulting from pathogenic variants in PKD1 and PKD2 is the most common form of PKD, but other genetic causes tied to primary cilia function have been identified. Biallelic pathogenic variants in the serine/threonine kinase NEK8 cause a syndromic ciliopathy with extra-kidney manifestations. Here we identify NEK8 as a disease gene for ADPKD in 12 families. Clinical evaluation was combined with functional studies using fibroblasts and tubuloids from affected individuals. Nek8 knockout mouse kidney epithelial (IMCD3) cells transfected with wild type or variant NEK8 were further used to study ciliogenesis, ciliary trafficking, kinase function, and DNA damage responses. Twenty-one affected monoallelic individuals uniformly exhibited cystic kidney disease (mostly neonatal) without consistent extra-kidney manifestations. Recurrent de novo mutations of the NEK8 missense variant p.Arg45Trp, including mosaicism, were seen in ten families. Missense variants elsewhere within the kinase domain (p.Ile150Met and p.Lys157Gln) were also identified. Functional studies demonstrated normal localization of the NEK8 protein to the proximal cilium and no consistent cilia formation defects in patient-derived cells. NEK8-wild type protein and all variant forms of the protein expressed in Nek8 knockout IMCD3 cells were localized to cilia and supported ciliogenesis. However, Nek8 knockout IMCD3 cells expressing NEK8-p.Arg45Trp and NEK8-p.Lys157Gln showed significantly decreased polycystin-2 but normal ANKS6 localization in cilia. Moreover, p.Arg45Trp NEK8 exhibited reduced kinase activity in vitro. In patient derived tubuloids and IMCD3 cells expressing NEK8-p.Arg45Trp, DNA damage signaling was increased compared to healthy passage-matched controls. Thus, we propose a dominant-negative effect for specific heterozygous missense variants in the NEK8 kinase domain as a new cause of PKD.
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Affiliation(s)
- Laura R Claus
- Department of Genetics, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Chuan Chen
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota, USA
| | | | - Joshua L Turner
- Department of Genetics and Biochemistry, Clemson University, Clemson, South Carolina, USA
| | - Gisela G Slaats
- Department of Nephrology and Hypertension, Regenerative Medicine Center Utrecht, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Alexandra L Hawks
- Department of Genetics and Biochemistry, Clemson University, Clemson, South Carolina, USA
| | - Holly Mabillard
- Newcastle University, Translational and Clinical Research Institute, Newcastle upon Tyne, UK
| | - Sarah R Senum
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota, USA
| | - Sujata Srikanth
- Research Division, Greenwood Genetic Center, Greenwood, South Carolina, USA
| | | | - Raymond J Louie
- Research Division, Greenwood Genetic Center, Greenwood, South Carolina, USA
| | - Josh Silver
- Fred A. Litwin Family Centre in Genetic Medicine, University Health Network and Mount Sinai Hospital, Toronto, Ontario, Canada; Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - Jordan Lerner-Ellis
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada; Pathology and Laboratory Medicine, Mount Sinai Hospital, Toronto, Ontario, Canada; Lunenfeld-Tanenbaum Research Institute, Toronto, Ontario, Canada
| | - Chantal Morel
- Fred A. Litwin Family Centre in Genetic Medicine, University Health Network and Mount Sinai Hospital, Toronto, Ontario, Canada; Department of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Chloe Mighton
- Pathology and Laboratory Medicine, Mount Sinai Hospital, Toronto, Ontario, Canada; Lunenfeld-Tanenbaum Research Institute, Toronto, Ontario, Canada
| | - Frank Sleutels
- Department of Clinical Genetics, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Marjon van Slegtenhorst
- Department of Clinical Genetics, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Tjakko van Ham
- Department of Clinical Genetics, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Alice S Brooks
- Department of Clinical Genetics, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Eiske M Dorresteijn
- Department of Pediatric Nephrology, Erasmus University Medical Center, Sophia Children's Hospital, Rotterdam, the Netherlands
| | - Tahsin Stefan Barakat
- Department of Clinical Genetics, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Karin Dahan
- Institute Pathology and Genetic, Center of Human Genetics, Charleroi, Belgium
| | - Nathalie Demoulin
- Division of Nephrology, Cliniques Universitaires Saint-Luc, Brussels, Belgium; Recherche Expérimentale et Clinique, UCLouvain, Brussels, Belgium
| | - Eric Jean Goffin
- Division of Nephrology, Cliniques Universitaires Saint-Luc, Brussels, Belgium; Recherche Expérimentale et Clinique, UCLouvain, Brussels, Belgium
| | - Eric Olinger
- Newcastle University, Translational and Clinical Research Institute, Newcastle upon Tyne, UK
| | - Martin Larsen
- Department of Clinical Genetics, Odense University Hospital, Odense, Denmark; Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Jens Michael Hertz
- Department of Clinical Genetics, Odense University Hospital, Odense, Denmark; Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Marc R Lilien
- Department of Pediatric Nephrology, Wilhelmina Children's Hospital, Utrecht, the Netherlands
| | - Lena Obeidová
- Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - Tomas Seeman
- Department of Pediatrics, 2nd Faculty of Medicine, Charles University, Prague, Czech Republic; Department of Pediatrics, University Hospital Ostrava, Ostrava, Czech Republic; Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic
| | - Hillarey K Stone
- Division of Nephrology and Hypertension, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Larissa Kerecuk
- Birmingham Women's and Children's National Health Services (NHS) Foundation Trust, National Institute for Health Care and Research (NIHR) Clinical Research Network (CRN) West Midlands, Birmingham, UK
| | - Mihai Gurgu
- Fundeni Clinical Institute, Bucharest, Romania
| | - Fjodor A Yousef Yengej
- Department of Nephrology and Hypertension, University Medical Centre Utrecht, Utrecht, the Netherlands; Hubrecht Institute for Developmental Biology and Stem Cell Research-KNAW, Utrecht, the Netherlands
| | - Carola M E Ammerlaan
- Department of Nephrology and Hypertension, University Medical Centre Utrecht, Utrecht, the Netherlands; Hubrecht Institute for Developmental Biology and Stem Cell Research-KNAW, Utrecht, the Netherlands
| | - Maarten B Rookmaaker
- Department of Nephrology and Hypertension, University Medical Centre Utrecht, Utrecht, the Netherlands
| | - Christian Hanna
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota, USA; Division of Pediatric Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota, USA
| | - R Curtis Rogers
- Research Division, Greenwood Genetic Center, Greenwood, South Carolina, USA
| | - Karen Duran
- Department of Genetics, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Edith Peters
- Department of Genetics, University Medical Center Utrecht, Utrecht, the Netherlands
| | - John A Sayer
- Newcastle University, Translational and Clinical Research Institute, Newcastle upon Tyne, UK; Renal Services, The Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK; National Institute for Health and Care Research (NIHR) Biomedical Research Centre, Newcastle, UK
| | - Gijs van Haaften
- Department of Genetics, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Peter C Harris
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota, USA; Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota, USA
| | - Kun Ling
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota, USA; Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota, USA.
| | - Jennifer M Mason
- Department of Genetics and Biochemistry, Clemson University, Clemson, South Carolina, USA.
| | - Albertien M van Eerde
- Department of Genetics, University Medical Center Utrecht, Utrecht, the Netherlands.
| | - Richard Steet
- Research Division, Greenwood Genetic Center, Greenwood, South Carolina, USA.
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2
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Djannatian M, Radha S, Weikert U, Safaiyan S, Wrede C, Deichsel C, Kislinger G, Rhomberg A, Ruhwedel T, Campbell DS, van Ham T, Schmid B, Hegermann J, Möbius W, Schifferer M, Simons M. Myelination generates aberrant ultrastructure that is resolved by microglia. J Biophys Biochem Cytol 2023; 222:213804. [PMID: 36637807 PMCID: PMC9856851 DOI: 10.1083/jcb.202204010] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 10/18/2022] [Accepted: 12/21/2022] [Indexed: 01/14/2023] Open
Abstract
To enable rapid propagation of action potentials, axons are ensheathed by myelin, a multilayered insulating membrane formed by oligodendrocytes. Most of the myelin is generated early in development, resulting in the generation of long-lasting stable membrane structures. Here, we explored structural and dynamic changes in central nervous system myelin during development. To achieve this, we performed an ultrastructural analysis of mouse optic nerves by serial block face scanning electron microscopy (SBF-SEM) and confocal time-lapse imaging in the zebrafish spinal cord. We found that myelin undergoes extensive ultrastructural changes during early postnatal development. Myelin degeneration profiles were engulfed and phagocytosed by microglia using exposed phosphatidylserine as one "eat me" signal. In contrast, retractions of entire myelin sheaths occurred independently of microglia and involved uptake of myelin by the oligodendrocyte itself. Our findings show that the generation of myelin early in development is an inaccurate process associated with aberrant ultrastructural features that require substantial refinement.
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Affiliation(s)
- Minou Djannatian
- Institute of Neuronal Cell Biology, Technical University Munich, Munich, Germany,https://ror.org/043j0f473German Center for Neurodegenerative Diseases, Munich, Germany,Department of Neurology, Klinikum rechts der Isar, TUM School of Medicine, Technical University of Munich, Munich, Germany,Munich Cluster of Systems Neurology (SyNergy), Munich, Germany,Minou Djannatian:
| | - Swathi Radha
- Institute of Neuronal Cell Biology, Technical University Munich, Munich, Germany,https://ror.org/043j0f473German Center for Neurodegenerative Diseases, Munich, Germany
| | - Ulrich Weikert
- Max-Planck Institute of Experimental Medicine, Göttingen, Germany
| | - Shima Safaiyan
- Institute of Neuronal Cell Biology, Technical University Munich, Munich, Germany,https://ror.org/043j0f473German Center for Neurodegenerative Diseases, Munich, Germany
| | - Christoph Wrede
- https://ror.org/00f2yqf98Institute of Functional and Applied Anatomy, Research Core Unit Electron Microscopy, Hannover Medical School, Hannover, Germany
| | - Cassandra Deichsel
- Institute of Neuronal Cell Biology, Technical University Munich, Munich, Germany,https://ror.org/043j0f473German Center for Neurodegenerative Diseases, Munich, Germany
| | - Georg Kislinger
- Institute of Neuronal Cell Biology, Technical University Munich, Munich, Germany,https://ror.org/043j0f473German Center for Neurodegenerative Diseases, Munich, Germany
| | - Agata Rhomberg
- Institute of Neuronal Cell Biology, Technical University Munich, Munich, Germany,https://ror.org/043j0f473German Center for Neurodegenerative Diseases, Munich, Germany
| | - Torben Ruhwedel
- Max-Planck Institute of Experimental Medicine, Göttingen, Germany
| | - Douglas S. Campbell
- Institute of Neuronal Cell Biology, Technical University Munich, Munich, Germany,https://ror.org/043j0f473German Center for Neurodegenerative Diseases, Munich, Germany
| | - Tjakko van Ham
- https://ror.org/018906e22Department of Clinical Genetics, Erasmus University Medical Center, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Bettina Schmid
- https://ror.org/043j0f473German Center for Neurodegenerative Diseases, Munich, Germany
| | - Jan Hegermann
- https://ror.org/00f2yqf98Institute of Functional and Applied Anatomy, Research Core Unit Electron Microscopy, Hannover Medical School, Hannover, Germany
| | - Wiebke Möbius
- Max-Planck Institute of Experimental Medicine, Göttingen, Germany
| | - Martina Schifferer
- https://ror.org/043j0f473German Center for Neurodegenerative Diseases, Munich, Germany,Munich Cluster of Systems Neurology (SyNergy), Munich, Germany
| | - Mikael Simons
- Institute of Neuronal Cell Biology, Technical University Munich, Munich, Germany,https://ror.org/043j0f473German Center for Neurodegenerative Diseases, Munich, Germany,Munich Cluster of Systems Neurology (SyNergy), Munich, Germany,Institute for Stroke and Dementia Research, University Hospital of Munich, Ludwig Maximilian University of Munich, Munich, Germany,Correspondence to Mikael Simons:
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3
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Mancini GMS, Smits DJ, Dekker J, Schot R, de Wit MCY, Lequin MH, Dremmen M, Brooks AS, van Ham T, Verheijen FW, Fornerod M, Dobyns WB, Wilke M. Multidisciplinary interaction and MCD gene discovery. The perspective of the clinical geneticist. Eur J Paediatr Neurol 2021; 35:27-34. [PMID: 34592643 DOI: 10.1016/j.ejpn.2021.09.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 08/18/2021] [Accepted: 09/09/2021] [Indexed: 10/20/2022]
Abstract
The increasing pace of gene discovery in the last decade has brought a major change in the way the genetic causes of brain malformations are being diagnosed. Unbiased genomic screening has gained the first place in the diagnostic protocol of a child with congenital (brain) anomalies and the detected variants are matched with the phenotypic presentation afterwards. This process is defined as "reverse phenotyping". Screening of DNA, through copy number variant analysis of microarrays and analysis of exome data on different platforms, obtained from the index patient and both parents has become a routine approach in many centers worldwide. Clinicians are used to multidisciplinary team interaction in patient care and disease management and this explains why the majority of research that has led to the discovery of new genetic disorders nowadays proceeds from clinical observations to genomic analysis and to data exchange facilitated by open access sharing databases. However, the relevance of multidisciplinary team interaction has not been object of systematic research in the field of brain malformations. This review will illustrate some examples of how diagnostically driven questions through multidisciplinary interaction, among clinical and preclinical disciplines, can be successful in the discovery of new genes related to brain malformations. The first example illustrates the setting of interaction among neurologists, geneticists and neuro-radiologists. The second illustrates the importance of interaction among clinical dysmorphologists for pattern recognition of syndromes with multiple congenital anomalies. The third example shows how fruitful it can be to step out of the "clinical comfort zone", and interact with basic scientists in applying emerging technologies to solve the diagnostic puzzles.
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Affiliation(s)
- Grazia M S Mancini
- Department of Clinical Genetics, ErasmusMC University Medical Center Rotterdam, Dr. Molewaterplein 40, 3015 GD, Rotterdam, the Netherlands; ENCORE Expertise Center for Genetic Neurocognitive Developmental Disorders, Erasmus, MC, Rotterdam.
| | - Daphne J Smits
- Department of Clinical Genetics, ErasmusMC University Medical Center Rotterdam, Dr. Molewaterplein 40, 3015 GD, Rotterdam, the Netherlands
| | - Jordy Dekker
- Department of Clinical Genetics, ErasmusMC University Medical Center Rotterdam, Dr. Molewaterplein 40, 3015 GD, Rotterdam, the Netherlands
| | - Rachel Schot
- Department of Clinical Genetics, ErasmusMC University Medical Center Rotterdam, Dr. Molewaterplein 40, 3015 GD, Rotterdam, the Netherlands; ENCORE Expertise Center for Genetic Neurocognitive Developmental Disorders, Erasmus, MC, Rotterdam
| | - Marie Claire Y de Wit
- Department of Child Neurology, Sophia Children's Hospital, ErasmusMC University Medical Center Rotterdam, Dr. Molewaterplein 40, 3015 GD, Rotterdam, Rotterdam, NL, the Netherlands; ENCORE Expertise Center for Genetic Neurocognitive Developmental Disorders, Erasmus, MC, Rotterdam
| | - Maarten H Lequin
- Department of Radiology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Marjolein Dremmen
- Department of Radiology, Sophia Children's Hospital, ErasmusMC University Medical Center Rotterdam, Dr. Molewaterplein 40, 3015 GD, Rotterdam, the Netherlands; ENCORE Expertise Center for Genetic Neurocognitive Developmental Disorders, Erasmus, MC, Rotterdam
| | - Alice S Brooks
- Department of Clinical Genetics, ErasmusMC University Medical Center Rotterdam, Dr. Molewaterplein 40, 3015 GD, Rotterdam, the Netherlands
| | - Tjakko van Ham
- Department of Clinical Genetics, ErasmusMC University Medical Center Rotterdam, Dr. Molewaterplein 40, 3015 GD, Rotterdam, the Netherlands
| | - Frans W Verheijen
- Department of Clinical Genetics, ErasmusMC University Medical Center Rotterdam, Dr. Molewaterplein 40, 3015 GD, Rotterdam, the Netherlands; ENCORE Expertise Center for Genetic Neurocognitive Developmental Disorders, Erasmus, MC, Rotterdam
| | - Maarten Fornerod
- Department of Cell Biology, ErasmusMC University Medical Center Rotterdam, Dr. Molewaterplein 40, 3015 GD, Rotterdam, the Netherlands
| | - William B Dobyns
- Department of Pediatrics (Genetics), University of Minnesota, 420 Delaware Street SE, MMC75, Minneapolis, MN, 55454, USA
| | - Martina Wilke
- Department of Clinical Genetics, ErasmusMC University Medical Center Rotterdam, Dr. Molewaterplein 40, 3015 GD, Rotterdam, the Netherlands; ENCORE Expertise Center for Genetic Neurocognitive Developmental Disorders, Erasmus, MC, Rotterdam
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4
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Sofou K, Meier K, Sanderson LE, Kaminski D, Montoliu‐Gaya L, Samuelsson E, Blomqvist M, Agholme L, Gärtner J, Mühlhausen C, Darin N, Barakat TS, Schlotawa L, van Ham T, Asin Cayuela J, Sterky FH. Bi-allelic VPS16 variants limit HOPS/CORVET levels and cause a mucopolysaccharidosis-like disease. EMBO Mol Med 2021; 13:e13376. [PMID: 33938619 PMCID: PMC8103096 DOI: 10.15252/emmm.202013376] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 03/18/2021] [Accepted: 03/19/2021] [Indexed: 12/13/2022] Open
Abstract
Lysosomal storage diseases, including mucopolysaccharidoses, result from genetic defects that impair lysosomal catabolism. Here, we describe two patients from two independent families presenting with progressive psychomotor regression, delayed myelination, brain atrophy, neutropenia, skeletal abnormalities, and mucopolysaccharidosis-like dysmorphic features. Both patients were homozygous for the same intronic variant in VPS16, a gene encoding a subunit of the HOPS and CORVET complexes. The variant impaired normal mRNA splicing and led to an ~85% reduction in VPS16 protein levels in patient-derived fibroblasts. Levels of other HOPS/CORVET subunits, including VPS33A, were similarly reduced, but restored upon re-expression of VPS16. Patient-derived fibroblasts showed defects in the uptake and endosomal trafficking of transferrin as well as accumulation of autophagosomes and lysosomal compartments. Re-expression of VPS16 rescued the cellular phenotypes. Zebrafish with disrupted vps16 expression showed impaired development, reduced myelination, and a similar accumulation of lysosomes and autophagosomes in the brain, particularly in glia cells. This disorder resembles previously reported patients with mutations in VPS33A, thus expanding the family of mucopolysaccharidosis-like diseases that result from mutations in HOPS/CORVET subunits.
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Affiliation(s)
- Kalliopi Sofou
- Department of PaediatricsInstitute of Clinical SciencesUniversity of GothenburgGothenburgSweden
| | - Kolja Meier
- Department of Pediatrics and Adolescent MedicineUniversity Medical Center GoettingenGoettingenGermany
| | - Leslie E Sanderson
- Department of Clinical GeneticsErasmus University Medical Center RotterdamRotterdamThe Netherlands
| | - Debora Kaminski
- Department of Laboratory MedicineInstitute of BiomedicineUniversity of GothenburgGothenburgSweden
- Department of Clinical ChemistrySahlgrenska University HospitalGothenburgSweden
- Wallenberg Centre for Molecular and Translational MedicineUniversity of GothenburgGothenburgSweden
| | - Laia Montoliu‐Gaya
- Department of Laboratory MedicineInstitute of BiomedicineUniversity of GothenburgGothenburgSweden
- Wallenberg Centre for Molecular and Translational MedicineUniversity of GothenburgGothenburgSweden
| | - Emma Samuelsson
- Department of Clinical ChemistrySahlgrenska University HospitalGothenburgSweden
| | - Maria Blomqvist
- Department of Laboratory MedicineInstitute of BiomedicineUniversity of GothenburgGothenburgSweden
- Department of Clinical ChemistrySahlgrenska University HospitalGothenburgSweden
| | - Lotta Agholme
- Department of Clinical ChemistrySahlgrenska University HospitalGothenburgSweden
- Department of Psychiatry and NeurochemistryInstitute of Neuroscience and PhysiologyUniversity of GothenburgGothenburgSweden
| | - Jutta Gärtner
- Department of Pediatrics and Adolescent MedicineUniversity Medical Center GoettingenGoettingenGermany
| | - Chris Mühlhausen
- Department of Pediatrics and Adolescent MedicineUniversity Medical Center GoettingenGoettingenGermany
| | - Niklas Darin
- Department of PaediatricsInstitute of Clinical SciencesUniversity of GothenburgGothenburgSweden
| | - Tahsin Stefan Barakat
- Department of Clinical GeneticsErasmus University Medical Center RotterdamRotterdamThe Netherlands
| | - Lars Schlotawa
- Department of Pediatrics and Adolescent MedicineUniversity Medical Center GoettingenGoettingenGermany
| | - Tjakko van Ham
- Department of Clinical GeneticsErasmus University Medical Center RotterdamRotterdamThe Netherlands
| | - Jorge Asin Cayuela
- Department of Laboratory MedicineInstitute of BiomedicineUniversity of GothenburgGothenburgSweden
- Department of Clinical ChemistrySahlgrenska University HospitalGothenburgSweden
| | - Fredrik H Sterky
- Department of Laboratory MedicineInstitute of BiomedicineUniversity of GothenburgGothenburgSweden
- Department of Clinical ChemistrySahlgrenska University HospitalGothenburgSweden
- Wallenberg Centre for Molecular and Translational MedicineUniversity of GothenburgGothenburgSweden
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5
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Kaminski Schierle GS, Bertoncini CW, Chan FTS, van der Goot AT, Schwedler S, Skepper J, Schlachter S, van Ham T, Esposito A, Kumita JR, Nollen EAA, Dobson CM, Kaminski CF. A FRET sensor for non-invasive imaging of amyloid formation in vivo. Chemphyschem 2011; 12:673-680. [PMID: 21308945 PMCID: PMC5402868 DOI: 10.1002/cphc.201000996] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Indexed: 11/10/2022]
Abstract
Misfolding and aggregation of amyloidogenic polypeptides lie at the root of many neurodegenerative diseases. Whilst protein aggregation can be readily studied in vitro by established biophysical techniques, direct observation of the nature and kinetics of aggregation processes taking place in vivo is much more challenging. We describe here, however, a Förster resonance energy transfer sensor that permits the aggregation kinetics of amyloidogenic proteins to be quantified in living systems by exploiting our observation that amyloid assemblies can act as energy acceptors for variants of fluorescent proteins. The observed lifetime reduction can be attributed to fluorescence energy transfer to intrinsic energy states associated with the growing amyloid species. Indeed, for a-synuclein, a protein whose aggregation is linked to Parkinson's disease, we have used this sensor to follow the kinetics of the self-association reactions taking place in vitro and in vivo and to reveal the nature of the ensuing aggregated species. Experiments were conducted in vitro, in cells in culture and in living Caenorhabditis elegans. For the latter the readout correlates directly with the appearance of a toxic phenotype. The ability to measure the appearance and development of pathogenic amyloid species in a living animal and the ability to relate such data to similar processes observed in vitro provides a powerful new tool in the study of the pathology of the family of misfolding disorders. Our study confirms the importance of the molecular environment in which aggregation reactions take place, highlighting similarities as well as differences between the processes occurring in vitro and in vivo, and their significance for defining the molecular physiology of the diseases with which they are associated.
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Affiliation(s)
- Gabriele S. Kaminski Schierle
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Pembroke Street, Cambridge CB2 3RA (U.K.)
| | - Carlos W. Bertoncini
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (U.K.)
- Laboratory of Molecular Biophysics, Institute for Research in Biomedicine, Baldiri Reixac 10-12, 08028, Barcelona (Spain)
| | - Fiona T. S. Chan
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Pembroke Street, Cambridge CB2 3RA (U.K.)
| | - Annemieke T. van der Goot
- Department of Genetics, University Medical Centre Groningen and University of Groningen 9700 RB Groningen (The Netherlands)
| | - Stefanie Schwedler
- Physikalische Chemie I, Fakultät für Chemie Universität Bielefeld, Universitätsstr. 25, 33615, Bielefeld (Germany)
| | - Jeremy Skepper
- Department of Physiology, Development and Neuroscience University of Cambridge, Downing Street, Cambridge CB2 3DY (U.K.)
| | - Simon Schlachter
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Pembroke Street, Cambridge CB2 3RA (U.K.)
| | - Tjakko van Ham
- Department of Genetics, University Medical Centre Groningen and University of Groningen 9700 RB Groningen (The Netherlands)
| | - Alessandro Esposito
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Pembroke Street, Cambridge CB2 3RA (U.K.)
| | - Janet R. Kumita
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (U.K.)
| | - Ellen A. A. Nollen
- Department of Genetics, University Medical Centre Groningen and University of Groningen 9700 RB Groningen (The Netherlands)
| | - Christopher M. Dobson
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (U.K.)
| | - Clemens F. Kaminski
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Pembroke Street, Cambridge CB2 3RA (U.K.)
- Friedrich-Alexander University of Erlangen Nürnberg 91052 Erlangen (Germany)
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