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Mahmoudi N, Mohamed E, Dehnavi SS, Aguilar LMC, Harvey AR, Parish CL, Williams RJ, Nisbet DR. Calming the Nerves via the Immune Instructive Physiochemical Properties of Self-Assembling Peptide Hydrogels. Adv Sci (Weinh) 2024; 11:e2303707. [PMID: 38030559 PMCID: PMC10837390 DOI: 10.1002/advs.202303707] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 10/22/2023] [Indexed: 12/01/2023]
Abstract
Current therapies for the devastating damage caused by traumatic brain injuries (TBI) are limited. This is in part due to poor drug efficacy to modulate neuroinflammation, angiogenesis and/or promoting neuroprotection and is the combined result of challenges in getting drugs across the blood brain barrier, in a targeted approach. The negative impact of the injured extracellular matrix (ECM) has been identified as a factor in restricting post-injury plasticity of residual neurons and is shown to reduce the functional integration of grafted cells. Therefore, new strategies are needed to manipulate the extracellular environment at the subacute phase to enhance brain regeneration. In this review, potential strategies are to be discussed for the treatment of TBI by using self-assembling peptide (SAP) hydrogels, fabricated via the rational design of supramolecular peptide scaffolds, as an artificial ECM which under the appropriate conditions yields a supramolecular hydrogel. Sequence selection of the peptides allows the tuning of these hydrogels' physical and biochemical properties such as charge, hydrophobicity, cell adhesiveness, stiffness, factor presentation, degradation profile and responsiveness to (external) stimuli. This review aims to facilitate the development of more intelligent biomaterials in the future to satisfy the parameters, requirements, and opportunities for the effective treatment of TBI.
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Affiliation(s)
- Negar Mahmoudi
- Laboratory of Advanced Biomaterials, the John Curtin School of Medical Research, Australian National University, Canberra, ACT, 2601, Australia
- ANU College of Engineering & Computer Science, Australian National University, Canberra, ACT, 2601, Australia
- The Graeme Clark Institute, The University of Melbourne, Melbourne, VIC, 3010, Australia
- Department of Biomedical Engineering, Faculty of Engineering and Information Technology, The University of Melbourne, Melbourne, VIC, 3010, Australia
| | - Elmira Mohamed
- Laboratory of Advanced Biomaterials, the John Curtin School of Medical Research, Australian National University, Canberra, ACT, 2601, Australia
| | - Shiva Soltani Dehnavi
- Laboratory of Advanced Biomaterials, the John Curtin School of Medical Research, Australian National University, Canberra, ACT, 2601, Australia
- ANU College of Engineering & Computer Science, Australian National University, Canberra, ACT, 2601, Australia
| | - Lilith M Caballero Aguilar
- Laboratory of Advanced Biomaterials, the John Curtin School of Medical Research, Australian National University, Canberra, ACT, 2601, Australia
- The Graeme Clark Institute, The University of Melbourne, Melbourne, VIC, 3010, Australia
- Department of Biomedical Engineering, Faculty of Engineering and Information Technology, The University of Melbourne, Melbourne, VIC, 3010, Australia
| | - Alan R Harvey
- School of Human Sciences, The University of Western Australia, and Perron Institute for Neurological and Translational Science, Perth, WA, 6009, Australia
| | - Clare L Parish
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Melbourne, VIC, 3010, Australia
| | - Richard J Williams
- IMPACT, School of Medicine, Deakin University, Geelong, VIC, 3217, Australia
| | - David R Nisbet
- Laboratory of Advanced Biomaterials, the John Curtin School of Medical Research, Australian National University, Canberra, ACT, 2601, Australia
- The Graeme Clark Institute, The University of Melbourne, Melbourne, VIC, 3010, Australia
- Department of Biomedical Engineering, Faculty of Engineering and Information Technology, The University of Melbourne, Melbourne, VIC, 3010, Australia
- Melbourne Medical School, Faculty of Medicine, Dentistry and Health Science, The University of Melbourne, Melbourne, VIC, 3010, Australia
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2
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Mahmoudi N, Wang Y, Moriarty N, Ahmed NY, Dehorter N, Lisowski L, Harvey AR, Parish CL, Williams RJ, Nisbet DR. Neuronal Replenishment via Hydrogel-Rationed Delivery of Reprogramming Factors. ACS Nano 2024; 18:3597-3613. [PMID: 38221746 DOI: 10.1021/acsnano.3c11337] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2024]
Abstract
The central nervous system's limited capacity for regeneration often leads to permanent neuronal loss following injury. Reprogramming resident reactive astrocytes into induced neurons at the site of injury is a promising strategy for neural repair, but challenges persist in stabilizing and accurately targeting viral vectors for transgene expression. In this study, we employed a bioinspired self-assembling peptide (SAP) hydrogel for the precise and controlled release of a hybrid adeno-associated virus (AAV) vector, AAVDJ, carrying the NeuroD1 neural reprogramming transgene. This method effectively mitigates the issues of high viral dosage at the target site, off-target delivery, and immunogenic reactions, enhancing the vector's targeting and reprogramming efficiency. In vitro, this vector successfully induced neuron formation, as confirmed by morphological, histochemical, and electrophysiological analyses. In vivo, SAP-mediated delivery of AAVDJ-NeuroD1 facilitated the trans-differentiation of reactive host astrocytes into induced neurons, concurrently reducing glial scarring. Our findings introduce a safe and effective method for treating central nervous system injuries, marking a significant advancement in regenerative neuroscience.
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Affiliation(s)
- Negar Mahmoudi
- Laboratory of Advanced Biomaterials, the John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601, Australia
- ANU College of Engineering & Computer Science, Acton, ACT 2601, Australia
| | - Yi Wang
- The Graeme Clark Institute, The University of Melbourne, Melbourne, VIC 3010, Australia
- Department of Biomedical Engineering, Faculty of Engineering and Information Technology, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Niamh Moriarty
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Melbourne, VIC 3010, Australia
| | - Noorya Y Ahmed
- The John Curtin School of Medical Research, The Australian National University, Canberra, ACT 2601, Australia
- The Queensland Brain Institute, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Nathalie Dehorter
- The John Curtin School of Medical Research, The Australian National University, Canberra, ACT 2601, Australia
- The Queensland Brain Institute, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Leszek Lisowski
- Translational Vectorology Research Unit, Children's Medical Research Institute, Faculty of Medicine and Health, The University of Sydney, Westmead, NSW 2145, Australia
- Vector and Genome Engineering Facility, Children's Medical Research Institute, Faculty of Medicine and Health, The University of Sydney, Westmead, NSW 2145, Australia
- Australian Genome Therapeutics Centre, Children's Medical Research Institute and Sydney Children's Hospitals Network, Westmead, NSW 2145, Australia
- Laboratory of Molecular Oncology and Innovative Therapies, Military Institute of Medicine, 04-141 Warsaw, Poland
| | - Alan R Harvey
- School of Human Sciences, The University of Western Australia, and Perron Institute for Neurological and Translational Science, Perth, WA 6009, Australia
| | - Clare L Parish
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Melbourne, VIC 3010, Australia
| | - Richard J Williams
- The Graeme Clark Institute, The University of Melbourne, Melbourne, VIC 3010, Australia
- IMPACT, School of Medicine, Deakin University, Geelong, VIC 3217, Australia
| | - David R Nisbet
- Laboratory of Advanced Biomaterials, the John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601, Australia
- The Graeme Clark Institute, The University of Melbourne, Melbourne, VIC 3010, Australia
- Department of Biomedical Engineering, Faculty of Engineering and Information Technology, The University of Melbourne, Melbourne, VIC 3010, Australia
- Melbourne Medical School, Faculty of Medicine, Dentistry and Health Science, The University of Melbourne, Melbourne, VIC 3010, Australia
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3
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Pavan C, Jin J, Jong S, Strbenac D, Davis RL, Sue CM, Johnston J, Lynch T, Halliday G, Kirik D, Parish CL, Thompson LH, Ovchinnikov DA. Generation of the iPSC line FINi002-A from a male Parkinson's disease patient carrying compound heterozygous mutations in the PRKN gene. Stem Cell Res 2023; 73:103211. [PMID: 37890334 DOI: 10.1016/j.scr.2023.103211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 09/21/2023] [Indexed: 10/29/2023] Open
Abstract
The most common cause of autosomal recessive familial Parkinson's disease (PD) are mutations in the PRKN/PARK2 gene encoding an E3 ubiquitin protein-ligase PARKIN. We report the generation of an iPSC cell line from the fibroblasts of a male PD patient carrying a common missense variant in exon 7 (p.Arg275Trp), and a 133 kb deletion encompassing exon 8, using transiently-present Sendai virus. The established line displays typical human primed iPSC morphology and expression of pluripotency-associated markers, normal karyotype without SNP array-detectable copy number variations and can give rise to derivatives of all three embryonic germ layers. We envisage the usefulness of this iPSC line, carrying a common and well-studied missense mutation in the RING1 domain of the PARKIN protein, for the elucidation of PARKIN-dependent mechanisms of PD using in vitro and in vivo models.
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Affiliation(s)
- C Pavan
- The Florey Institute for Neuroscience and Mental Health, University of Melbourne, Melbourne VIC 3010 Australia
| | - J Jin
- The Florey Institute for Neuroscience and Mental Health, University of Melbourne, Melbourne VIC 3010 Australia
| | - S Jong
- The Florey Institute for Neuroscience and Mental Health, University of Melbourne, Melbourne VIC 3010 Australia
| | - D Strbenac
- University of Sydney, Sydney, NSW 2006, Australia
| | - R L Davis
- University of Sydney, Sydney, NSW 2006, Australia
| | - C M Sue
- Neuroscience Research Australia and University of New South Wales, Sydney, NSW 2031, Australia
| | | | - T Lynch
- Mater Misericordiae University Hospital, Dublin, D07 R2WY, Ireland
| | - G Halliday
- University of Sydney, Sydney, NSW 2006, Australia
| | - D Kirik
- University of Sydney, Sydney, NSW 2006, Australia; Lund University, Lund, 22184 Sweden
| | - C L Parish
- The Florey Institute for Neuroscience and Mental Health, University of Melbourne, Melbourne VIC 3010 Australia
| | - L H Thompson
- The Florey Institute for Neuroscience and Mental Health, University of Melbourne, Melbourne VIC 3010 Australia; University of Sydney, Sydney, NSW 2006, Australia.
| | - D A Ovchinnikov
- The Florey Institute for Neuroscience and Mental Health, University of Melbourne, Melbourne VIC 3010 Australia
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4
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Wali G, Li Y, Abu-Bonsrah D, Kirik D, Parish CL, Sue CM. Generation of human-induced pluripotent-stem-cell-derived cortical neurons for high-throughput imaging of neurite morphology and neuron maturation. STAR Protoc 2023; 4:102325. [PMID: 37300830 DOI: 10.1016/j.xpro.2023.102325] [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] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 03/09/2023] [Accepted: 05/02/2023] [Indexed: 06/12/2023] Open
Abstract
High-throughput imaging allows in vitro assessment of neuron morphology for screening populations under developmental, homeostatic, and/or disease conditions. Here, we present a protocol to differentiate cryopreserved human cortical neuronal progenitors into mature cortical neurons for high-throughput imaging analysis. We describe the use of a notch signaling inhibitor to generate homogeneous neuronal populations at densities amenable to individual neurite identification. We detail neurite morphology assessment via measuring multiple parameters including neurite length, branches, roots, segments and extremities, and neuron maturation.
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Affiliation(s)
- Gautam Wali
- Neuroscience Research Australia and University of New South Wales, Sydney, NSW 2031, Australia; Kolling Institute for Medical Research and Department of Medicine, University of Sydney, Sydney, NSW 2065, Australia; Northern Clinical School, Sydney Medical School, University of Sydney, Sydney, NSW 2065, Australia; Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD 20815, USA.
| | - Yan Li
- Neuroscience Research Australia and University of New South Wales, Sydney, NSW 2031, Australia; Kolling Institute for Medical Research and Department of Medicine, University of Sydney, Sydney, NSW 2065, Australia; Northern Clinical School, Sydney Medical School, University of Sydney, Sydney, NSW 2065, Australia
| | - Dad Abu-Bonsrah
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia; Department of Paediatrics, The University of Melbourne, Parkville, VIC 3052, Australia; Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD 20815, USA
| | - Deniz Kirik
- BRAINS Unit, BMC D11, Lund University, 22184 Lund, Sweden; Honorary Professorship at School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia; Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD 20815, USA
| | - Clare L Parish
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia; Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD 20815, USA
| | - Carolyn M Sue
- Neuroscience Research Australia and University of New South Wales, Sydney, NSW 2031, Australia; Kolling Institute for Medical Research and Department of Medicine, University of Sydney, Sydney, NSW 2065, Australia; Northern Clinical School, Sydney Medical School, University of Sydney, Sydney, NSW 2065, Australia; Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD 20815, USA
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5
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You Y, Prawer YDJ, De Paoli-Iseppi R, Hunt CPJ, Parish CL, Shim H, Clark MB. Identification of cell barcodes from long-read single-cell RNA-seq with BLAZE. Genome Biol 2023; 24:66. [PMID: 37024980 PMCID: PMC10077662 DOI: 10.1186/s13059-023-02907-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 03/23/2023] [Indexed: 04/08/2023] Open
Abstract
Long-read single-cell RNA sequencing (scRNA-seq) enables the quantification of RNA isoforms in individual cells. However, long-read scRNA-seq using the Oxford Nanopore platform has largely relied upon matched short-read data to identify cell barcodes. We introduce BLAZE, which accurately and efficiently identifies 10x cell barcodes using only nanopore long-read scRNA-seq data. BLAZE outperforms the existing tools and provides an accurate representation of the cells present in long-read scRNA-seq when compared to matched short reads. BLAZE simplifies long-read scRNA-seq while improving the results, is compatible with downstream tools accepting a cell barcode file, and is available at https://github.com/shimlab/BLAZE .
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Affiliation(s)
- Yupei You
- School of Mathematics and Statistics/Melbourne Integrative Genomics, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Yair D J Prawer
- Centre for Stem Cell Systems, Department of Anatomy and Physiology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Ricardo De Paoli-Iseppi
- Centre for Stem Cell Systems, Department of Anatomy and Physiology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Cameron P J Hunt
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Clare L Parish
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Heejung Shim
- School of Mathematics and Statistics/Melbourne Integrative Genomics, The University of Melbourne, Parkville, VIC, 3010, Australia.
| | - Michael B Clark
- Centre for Stem Cell Systems, Department of Anatomy and Physiology, The University of Melbourne, Parkville, VIC, 3010, Australia.
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6
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Hunt CPJ, Moriarty N, van Deursen CBJ, Gantner CW, Thompson LH, Parish CL. Understanding and modeling regional specification of the human ganglionic eminence. Stem Cell Reports 2023; 18:654-671. [PMID: 36801004 PMCID: PMC10031306 DOI: 10.1016/j.stemcr.2023.01.010] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 01/22/2023] [Accepted: 01/23/2023] [Indexed: 02/18/2023] Open
Abstract
Inhibitory neurons originating from the ventral forebrain are associated with several neurological conditions. Distinct ventral forebrain subpopulations are generated from topographically defined zones; lateral-, medial- and caudal ganglionic eminences (LGE, MGE and CGE), yet key specification factors often span across developing zones contributing to difficulty in defining unique LGE, MGE or CGE profiles. Here we use human pluripotent stem cell (hPSC) reporter lines (NKX2.1-GFP and MEIS2-mCherry) and manipulation of morphogen gradients to gain greater insight into regional specification of these distinct zones. We identified Sonic hedgehog (SHH)-WNT crosstalk in regulating LGE and MGE fate and uncovered a role for retinoic acid signaling in CGE development. Unraveling the influence of these signaling pathways permitted development of fully defined protocols that favored generation of the three GE domains. These findings provide insight into the context-dependent role of morphogens in human GE specification and are of value for in vitro disease modeling and advancement of new therapies.
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Affiliation(s)
- Cameron P J Hunt
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia.
| | - Niamh Moriarty
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Coen B J van Deursen
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Carlos W Gantner
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Lachlan H Thompson
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Clare L Parish
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia.
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7
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Pantazis CB, Yang A, Lara E, McDonough JA, Blauwendraat C, Peng L, Oguro H, Kanaujiya J, Zou J, Sebesta D, Pratt G, Cross E, Blockwick J, Buxton P, Kinner-Bibeau L, Medura C, Tompkins C, Hughes S, Santiana M, Faghri F, Nalls MA, Vitale D, Ballard S, Qi YA, Ramos DM, Anderson KM, Stadler J, Narayan P, Papademetriou J, Reilly L, Nelson MP, Aggarwal S, Rosen LU, Kirwan P, Pisupati V, Coon SL, Scholz SW, Priebe T, Öttl M, Dong J, Meijer M, Janssen LJM, Lourenco VS, van der Kant R, Crusius D, Paquet D, Raulin AC, Bu G, Held A, Wainger BJ, Gabriele RMC, Casey JM, Wray S, Abu-Bonsrah D, Parish CL, Beccari MS, Cleveland DW, Li E, Rose IVL, Kampmann M, Calatayud Aristoy C, Verstreken P, Heinrich L, Chen MY, Schüle B, Dou D, Holzbaur ELF, Zanellati MC, Basundra R, Deshmukh M, Cohen S, Khanna R, Raman M, Nevin ZS, Matia M, Van Lent J, Timmerman V, Conklin BR, Johnson Chase K, Zhang K, Funes S, Bosco DA, Erlebach L, Welzer M, Kronenberg-Versteeg D, Lyu G, Arenas E, Coccia E, Sarrafha L, Ahfeldt T, Marioni JC, Skarnes WC, Cookson MR, Ward ME, Merkle FT. A reference human induced pluripotent stem cell line for large-scale collaborative studies. Cell Stem Cell 2022; 29:1685-1702.e22. [PMID: 36459969 PMCID: PMC9782786 DOI: 10.1016/j.stem.2022.11.004] [Citation(s) in RCA: 50] [Impact Index Per Article: 25.0] [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: 12/22/2021] [Revised: 10/07/2022] [Accepted: 11/07/2022] [Indexed: 12/03/2022]
Abstract
Human induced pluripotent stem cell (iPSC) lines are a powerful tool for studying development and disease, but the considerable phenotypic variation between lines makes it challenging to replicate key findings and integrate data across research groups. To address this issue, we sub-cloned candidate human iPSC lines and deeply characterized their genetic properties using whole genome sequencing, their genomic stability upon CRISPR-Cas9-based gene editing, and their phenotypic properties including differentiation to commonly used cell types. These studies identified KOLF2.1J as an all-around well-performing iPSC line. We then shared KOLF2.1J with groups around the world who tested its performance in head-to-head comparisons with their own preferred iPSC lines across a diverse range of differentiation protocols and functional assays. On the strength of these findings, we have made KOLF2.1J and its gene-edited derivative clones readily accessible to promote the standardization required for large-scale collaborative science in the stem cell field.
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Affiliation(s)
- Caroline B Pantazis
- Center for Alzheimer's and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Andrian Yang
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, UK; Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK; Wellcome Trust - Medical Research Council Institute of Metabolic Science, University of Cambridge, Cambridge CB2 0QQ, UK; Wellcome Trust - Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge CB2 0AW, UK
| | - Erika Lara
- Center for Alzheimer's and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | | | - Cornelis Blauwendraat
- Center for Alzheimer's and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA; Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, USA
| | - Lirong Peng
- Center for Alzheimer's and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA; Data Tecnica International LLC, Washington, DC, USA; Integrated Research Facility, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Frederick, MD, USA
| | - Hideyuki Oguro
- The Jackson Laboratory for Genomic Medicine, Farmington, CT, USA; Department of Cell Biology, University of Connecticut Health Center, Farmington, CT, USA
| | - Jitendra Kanaujiya
- The Jackson Laboratory for Genomic Medicine, Farmington, CT, USA; Department of Cell Biology, University of Connecticut Health Center, Farmington, CT, USA
| | - Jizhong Zou
- iPS Cell Core Facility, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | | | | | | | | | | | | | | | | | | | - Marianita Santiana
- Center for Alzheimer's and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Faraz Faghri
- Center for Alzheimer's and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA; Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, USA; Data Tecnica International LLC, Washington, DC, USA
| | - Mike A Nalls
- Center for Alzheimer's and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA; Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, USA; Data Tecnica International LLC, Washington, DC, USA
| | - Daniel Vitale
- Center for Alzheimer's and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA; Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, USA; Data Tecnica International LLC, Washington, DC, USA
| | - Shannon Ballard
- Center for Alzheimer's and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA; Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, USA; Data Tecnica International LLC, Washington, DC, USA
| | - Yue A Qi
- Center for Alzheimer's and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Daniel M Ramos
- Center for Alzheimer's and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Kailyn M Anderson
- Center for Alzheimer's and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Julia Stadler
- Center for Alzheimer's and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Priyanka Narayan
- Center for Alzheimer's and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA; Genetics and Biochemistry Branch, NIDDK, NINDS, National Institutes of Health, Bethesda, MD 20814, USA
| | - Jason Papademetriou
- Center for Alzheimer's and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Luke Reilly
- Center for Alzheimer's and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Matthew P Nelson
- Center for Alzheimer's and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Sanya Aggarwal
- Wellcome Trust - Medical Research Council Institute of Metabolic Science, University of Cambridge, Cambridge CB2 0QQ, UK; Wellcome Trust - Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge CB2 0AW, UK
| | - Leah U Rosen
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, UK
| | - Peter Kirwan
- Wellcome Trust - Medical Research Council Institute of Metabolic Science, University of Cambridge, Cambridge CB2 0QQ, UK; Wellcome Trust - Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge CB2 0AW, UK
| | - Venkat Pisupati
- Wellcome Trust - Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge CB2 0AW, UK; John van Geest Centre for Brain Repair, University of Cambridge, Cambridge CB2 0PY, UK
| | - Steven L Coon
- Molecular Genomics Core, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
| | - Sonja W Scholz
- Neurodegenerative Diseases Research Unit, National Institute of Neurological Disorders and Stroke, Bethesda, MD, USA; Department of Neurology, Johns Hopkins University, Baltimore, MD 21287, USA
| | - Theresa Priebe
- Department of Functional Genomics, Center for Neurogenomics and Cognitive Research, Amsterdam Neuroscience, VU University Amsterdam de Boelelaan 1087, 1081 HV Amsterdam, the Netherlands
| | - Miriam Öttl
- Department of Functional Genomics, Center for Neurogenomics and Cognitive Research, Amsterdam Neuroscience, VU University Amsterdam de Boelelaan 1087, 1081 HV Amsterdam, the Netherlands
| | - Jian Dong
- Department of Functional Genomics, Center for Neurogenomics and Cognitive Research, Amsterdam Neuroscience, VU University Amsterdam de Boelelaan 1087, 1081 HV Amsterdam, the Netherlands
| | - Marieke Meijer
- Department of Functional Genomics, Center for Neurogenomics and Cognitive Research, Amsterdam Neuroscience, VU University Amsterdam de Boelelaan 1087, 1081 HV Amsterdam, the Netherlands
| | - Lara J M Janssen
- Department of Functional Genomics, Center for Neurogenomics and Cognitive Research, Amsterdam Neuroscience, VU University Amsterdam de Boelelaan 1087, 1081 HV Amsterdam, the Netherlands
| | - Vanessa S Lourenco
- Department of Functional Genomics, Center for Neurogenomics and Cognitive Research, Amsterdam Neuroscience, VU University Amsterdam de Boelelaan 1087, 1081 HV Amsterdam, the Netherlands
| | - Rik van der Kant
- Department of Functional Genomics, Center for Neurogenomics and Cognitive Research, Amsterdam Neuroscience, VU University Amsterdam de Boelelaan 1087, 1081 HV Amsterdam, the Netherlands; Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Amsterdam UMC, Amsterdam, the Netherlands
| | - Dennis Crusius
- Institute for Stroke and Dementia Research, University Hospital, LMU Munich, 81377 Munich, Germany
| | - Dominik Paquet
- Institute for Stroke and Dementia Research, University Hospital, LMU Munich, 81377 Munich, Germany; Munich Cluster for Systems Neurology (SyNergy), 81377 Munich, Germany
| | | | - Guojun Bu
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
| | - Aaron Held
- Department of Neurology, Sean M. Healey & AMG Center for ALS, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Brian J Wainger
- Department of Neurology, Sean M. Healey & AMG Center for ALS, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA; Department of Anesthesiology, Critical Care and Pain Medicine, Massachusetts General Hospital, Boston, MA, USA; Harvard Stem Cell Institute, Cambridge, MA, USA; Broad Institute of Harvard University and MIT, Cambridge, MA, USA
| | - Rebecca M C Gabriele
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London WC1N 3BG, UK
| | - Jackie M Casey
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London WC1N 3BG, UK
| | - Selina Wray
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London WC1N 3BG, UK
| | - Dad Abu-Bonsrah
- The Florey Institute of Neuroscience & Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia; Department of Pediatrics, University of Melbourne, Parkville, VIC 3052, Australia
| | - Clare L Parish
- The Florey Institute of Neuroscience & Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Melinda S Beccari
- Department of Cellular and Molecular Medicine and Ludwig Institute for Cancer Research, University of California at San Diego, La Jolla, CA, USA
| | - Don W Cleveland
- Department of Cellular and Molecular Medicine and Ludwig Institute for Cancer Research, University of California at San Diego, La Jolla, CA, USA
| | - Emmy Li
- Institute for Neurodegenerative Diseases and Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, CA, USA; Chan Zuckerberg Biohub, San Francisco, CA, USA
| | - Indigo V L Rose
- Institute for Neurodegenerative Diseases and Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, CA, USA; Chan Zuckerberg Biohub, San Francisco, CA, USA
| | - Martin Kampmann
- Institute for Neurodegenerative Diseases and Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, CA, USA; Chan Zuckerberg Biohub, San Francisco, CA, USA
| | - Carles Calatayud Aristoy
- VIB-KU Leuven Center for Brain & Disease Research, 3000 Leuven, Belgium; KU Leuven, Department of Neurosciences, Leuven Brain Institute, Mission Lucidity, Leuven, Belgium
| | - Patrik Verstreken
- VIB-KU Leuven Center for Brain & Disease Research, 3000 Leuven, Belgium; KU Leuven, Department of Neurosciences, Leuven Brain Institute, Mission Lucidity, Leuven, Belgium
| | - Laurin Heinrich
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - Max Y Chen
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - Birgitt Schüle
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - Dan Dou
- Department of Physiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Erika L F Holzbaur
- Department of Physiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Maria Clara Zanellati
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Richa Basundra
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Mohanish Deshmukh
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Sarah Cohen
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Richa Khanna
- Department of Developmental Molecular and Chemical Biology, Tufts University School of Medicine, Boston, MA, USA
| | - Malavika Raman
- Department of Developmental Molecular and Chemical Biology, Tufts University School of Medicine, Boston, MA, USA
| | | | | | - Jonas Van Lent
- Peripheral Neuropathy Research Group, Department of Biomedical Sciences, University of Antwerp, Antwerp 2610, Belgium
| | - Vincent Timmerman
- Peripheral Neuropathy Research Group, Department of Biomedical Sciences, University of Antwerp, Antwerp 2610, Belgium
| | | | | | - Ke Zhang
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
| | - Salome Funes
- Department of Neurology, UMass Chan Medical School, Worcester, MA, USA
| | - Daryl A Bosco
- Department of Neurology, UMass Chan Medical School, Worcester, MA, USA
| | - Lena Erlebach
- Department of Cellular Neurology, Hertie Institute for Clinical Brain Research, University of Tübingen, Tübingen, Germany; German Center for Neurodegenerative Diseases (DZNE), Tübingen, Germany
| | - Marc Welzer
- Department of Cellular Neurology, Hertie Institute for Clinical Brain Research, University of Tübingen, Tübingen, Germany; German Center for Neurodegenerative Diseases (DZNE), Tübingen, Germany
| | - Deborah Kronenberg-Versteeg
- Department of Cellular Neurology, Hertie Institute for Clinical Brain Research, University of Tübingen, Tübingen, Germany; German Center for Neurodegenerative Diseases (DZNE), Tübingen, Germany
| | - Guochang Lyu
- Division of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Ernest Arenas
- Division of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Elena Coccia
- Nash Family Department of Neuroscience; Departments of Neurology and Cell, Developmental and Regenerative Biology; Ronald M. Loeb Center for Alzheimer's Disease; Friedman Brain Institute; Black Family Stem Cell Institute at Mount Sinai, New York, NY, USA
| | - Lily Sarrafha
- Nash Family Department of Neuroscience; Departments of Neurology and Cell, Developmental and Regenerative Biology; Ronald M. Loeb Center for Alzheimer's Disease; Friedman Brain Institute; Black Family Stem Cell Institute at Mount Sinai, New York, NY, USA
| | - Tim Ahfeldt
- Nash Family Department of Neuroscience; Departments of Neurology and Cell, Developmental and Regenerative Biology; Ronald M. Loeb Center for Alzheimer's Disease; Friedman Brain Institute; Black Family Stem Cell Institute at Mount Sinai, New York, NY, USA
| | - John C Marioni
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, UK; Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK; Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, UK
| | | | - Mark R Cookson
- Center for Alzheimer's and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA; Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, USA.
| | - Michael E Ward
- Center for Alzheimer's and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA.
| | - Florian T Merkle
- Wellcome Trust - Medical Research Council Institute of Metabolic Science, University of Cambridge, Cambridge CB2 0QQ, UK; Wellcome Trust - Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge CB2 0AW, UK.
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8
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Soltani Dehnavi S, Eivazi Zadeh Z, Harvey AR, Voelcker NH, Parish CL, Williams RJ, Elnathan R, Nisbet DR. Changing Fate: Reprogramming Cells via Engineered Nanoscale Delivery Materials. Adv Mater 2022; 34:e2108757. [PMID: 35396884 DOI: 10.1002/adma.202108757] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 04/02/2022] [Indexed: 06/14/2023]
Abstract
The incorporation of nanotechnology in regenerative medicine is at the nexus of fundamental innovations and early-stage breakthroughs, enabling exciting biomedical advances. One of the most exciting recent developments is the use of nanoscale constructs to influence the fate of cells, which are the basic building blocks of healthy function. Appropriate cell types can be effectively manipulated by direct cell reprogramming; a robust technique to manipulate cellular function and fate, underpinning burgeoning advances in drug delivery systems, regenerative medicine, and disease remodeling. Individual transcription factors, or combinations thereof, can be introduced into cells using both viral and nonviral delivery systems. Existing approaches have inherent limitations. Viral-based tools include issues of viral integration into the genome of the cells, the propensity for uncontrollable silencing, reduced copy potential and cell specificity, and neutralization via the immune response. Current nonviral cell reprogramming tools generally suffer from inferior expression efficiency. Nanomaterials are increasingly being explored to address these challenges and improve the efficacy of both viral and nonviral delivery because of their unique properties such as small size and high surface area. This review presents the state-of-the-art research in cell reprogramming, focused on recent breakthroughs in the deployment of nanomaterials as cell reprogramming delivery tools.
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Affiliation(s)
- Shiva Soltani Dehnavi
- ACRF Department of Cancer Biology and Therapeutics, The John Curtin School of Medical Research, ANU College of Health & Medicine, Canberra, ACT, 2601, Australia
- Research School of Chemistry, ANU College of Science, Canberra, ACT, 2601, Australia
- ANU College of Engineering & Computer Science, Canberra, ACT, 2601, Australia
| | - Zahra Eivazi Zadeh
- Biomedical Engineering Department, Amirkabir University of Technology, Tehran, 15875-4413, Iran
- The Graeme Clark Institute, The University of Melbourne, Melbourne, VIC, 3010, Australia
- Department of Biomedical Engineering, Faculty of Engineering and Information Technology, The University of Melbourne, Melbourne, VIC, 3010, Australia
| | - Alan R Harvey
- School of Human Sciences, The University of Western Australia, and Perron Institute for Neurological and Translational Science, Perth, WA, 6009, Australia
| | - Nicolas H Voelcker
- Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, Parkville, VIC, 3052, Australia
- Melbourne Centre for Nanofabrication, Victorian Node of the Australian National Fabrication Facility, 151 Wellington Road, Clayton, VIC, 3168, Australia
- CSIRO Manufacturing, Bayview Avenue, Clayton, VIC, 3168, Australia
| | - Clare L Parish
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Melbourne, VIC, 3010, Australia
| | - Richard J Williams
- iMPACT, School of Medicine, Deakin University, Waurn Ponds, VIC, 3216, Australia
| | - Roey Elnathan
- Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, Parkville, VIC, 3052, Australia
- Melbourne Centre for Nanofabrication, Victorian Node of the Australian National Fabrication Facility, 151 Wellington Road, Clayton, VIC, 3168, Australia
- CSIRO Manufacturing, Bayview Avenue, Clayton, VIC, 3168, Australia
- iMPACT, School of Medicine, Deakin University, Waurn Ponds, VIC, 3216, Australia
| | - David R Nisbet
- ACRF Department of Cancer Biology and Therapeutics, The John Curtin School of Medical Research, ANU College of Health & Medicine, Canberra, ACT, 2601, Australia
- Research School of Chemistry, ANU College of Science, Canberra, ACT, 2601, Australia
- The Graeme Clark Institute, The University of Melbourne, Melbourne, VIC, 3010, Australia
- Department of Biomedical Engineering, Faculty of Engineering and Information Technology, The University of Melbourne, Melbourne, VIC, 3010, Australia
- Melbourne Medical School, Faculty of Medicine, Dentistry and Health Science, The University of Melbourne, Melbourne, VIC, 3010, Australia
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Moriarty N, Kauhausen JA, Pavan C, Hunt CPJ, de Luzy IR, Penna V, Ermine CM, Thompson LH, Parish CL. Understanding the Influence of Target Acquisition on Survival, Integration, and Phenotypic Maturation of Dopamine Neurons within Stem Cell-Derived Neural Grafts in a Parkinson's Disease Model. J Neurosci 2022; 42:4995-5006. [PMID: 35610045 PMCID: PMC9233443 DOI: 10.1523/jneurosci.2431-21.2022] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 12/12/2021] [Revised: 04/14/2022] [Accepted: 04/15/2022] [Indexed: 12/24/2022] Open
Abstract
Midbrain dopaminergic (DA) neurons include many subtypes characterized by their location, connectivity and function. Surprisingly, mechanisms underpinning the specification of A9 neurons [responsible for motor function, including within ventral midbrain (VM) grafts for treating Parkinson's disease (PD)] over adjacent A10, remains largely speculated. We assessed the impact of synaptic targeting on survival, integration, and phenotype acquisition of dopaminergic neurons within VM grafts generated from fetal tissue or human pluripotent stem cells (PSCs). VM progenitors were grafted into female mice with 6OHDA-lesions of host midbrain dopamine neurons, with some animals also receiving intrastriatal quinolinic acid (QA) injections to ablate medium spiny neurons (MSN), the A9 neuron primary target. While loss of MSNs variably affected graft survival, it significantly reduced striatal yet increased cortical innervation. Consequently, grafts showed reduced A9 and increased A10 specification, with more DA neurons failing to mature into either subtype. These findings highlight the importance of target acquisition on DA subtype specification during development and repair.SIGNIFICANCE STATEMENT Parish and colleagues highlight, in a rodent model of Parkinson's disease (PD), the importance of synaptic target acquisition in the survival, integration and phenotypic specification of grafted dopamine neurons derived from fetal tissue and human stem cells. Ablation of host striatal neurons resulted in reduced dopamine neuron survival within grafts, re-routing of dopamine fibers from striatal to alternate cortical targets and a consequential reduced specification of A9 dopamine neurons (the subpopulation critical for restoration of motor function) and increase in A10 DA neurons.
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Affiliation(s)
- Niamh Moriarty
- Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Jessica A Kauhausen
- Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Chiara Pavan
- Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Cameron P J Hunt
- Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Isabelle R de Luzy
- Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Vanessa Penna
- Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Charlotte M Ermine
- Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Lachlan H Thompson
- Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Clare L Parish
- Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
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Wang Y, Penna V, Williams RJ, Parish CL, Nisbet DR. A Hydrogel as a Bespoke Delivery Platform for Stromal Cell-Derived Factor-1. Gels 2022; 8:gels8040224. [PMID: 35448125 PMCID: PMC9025061 DOI: 10.3390/gels8040224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 03/31/2022] [Accepted: 04/04/2022] [Indexed: 02/04/2023] Open
Abstract
The defined self-assembly of peptides (SAPs) into nanostructured bioactive hydrogels has great potential for repairing traumatic brain injuries, as they maintain a stable, homeostatic environment at an injury site, preventing further degeneration. They also present a bespoke platform to restore function via the naturalistic presentation of therapeutic proteins, such as stromal-cell-derived factor 1 (SDF-1), expressed by meningeal cells. A key challenge to the use of the SDF protein, however, is its rapid diffusion and degradation. Here, we engineered a homeostatic hydrogel produced by incorporating recombinant SDF-1 protein within a self-assembled peptide hydrogel to create a supportive milieu for transplanted cells. Our hydrogel can concomitantly deliver viable primary neural progenitor cells and sustained active SDF-1 to support the nascent graft, resulting in increased neuronal differentiation. Moreover, this homeostatic hydrogel can ensure a healthy and larger graft core without impeding neuronal fiber growth and innervation. These findings demonstrate the regenerative potential of these hydrogels to improve the integration of grafted cells to treat neural injuries and diseases.
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Affiliation(s)
- Yi Wang
- The Graeme Clark Institute, The University of Melbourne, Melbourne 3010, Australia;
- Department of Biomedical Engineering, Faculty of Engineering and Information Technology, The University of Melbourne, Melbourne 3010, Australia
| | - Vanessa Penna
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne 3052, Australia; (V.P.); (C.L.P.)
| | - Richard J. Williams
- Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Deakin University, Melbourne 3216, Australia;
| | - Clare L. Parish
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne 3052, Australia; (V.P.); (C.L.P.)
| | - David R. Nisbet
- The Graeme Clark Institute, The University of Melbourne, Melbourne 3010, Australia;
- Department of Biomedical Engineering, Faculty of Engineering and Information Technology, The University of Melbourne, Melbourne 3010, Australia
- Laboratory of Advanced Biomaterials, Research School of Chemistry and the John Curtin School of Medical Research, The Australian National University, Canberra 2601, Australia
- Melbourne Medical School, Faculty of Medicine, Dentistry and Health Science, The University of Melbourne, Melbourne 3010, Australia
- Correspondence:
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11
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Sun Y, Kakinen A, Wan X, Moriarty N, Hunt CP, Li Y, Andrikopoulos N, Nandakumar A, Davis TP, Parish CL, Song Y, Ke PC, Ding F. Spontaneous Formation of β-sheet Nano-barrels during the Early Aggregation of Alzheimer's Amyloid Beta. Nano Today 2021; 38:101125. [PMID: 33936250 PMCID: PMC8081394 DOI: 10.1016/j.nantod.2021.101125] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Soluble low-molecular-weight oligomers formed during the early aggregation of amyloid peptides have been hypothesized as a major toxic species of amyloidogenesis. Herein, we performed the first synergic in silico, in vitro and in vivo validations of the structure, dynamics and toxicity of Aβ42 oligomers. Aβ peptides readily assembled into β-rich oligomers comprised of extended β-hairpins and β-strands. Nanosized β-barrels were observed with certainty with simulations, transmission electron microscopy and Fourier transform infrared spectroscopy, corroborated by immunohistochemistry, cell viability, apoptosis, inflammation, autophagy and animal behavior assays. Secondary and tertiary structural proprieties of these oligomers, such as the sequence regions with high β-sheet propensities and inter-residue contact frequency patterns, were similar to the properties known for Aβ fibrils. The unambiguous spontaneous formation of β-barrels in the early aggregation of Aβ42 supports their roles as the common toxic intermediates in Alzheimer's pathobiology and a target for Alzheimer's therapeutics.
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Affiliation(s)
- Yunxiang Sun
- School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
- Department of Physics and Astronomy, Clemson University, Clemson, SC 29634, United States
- Address correspondence to: Yunxiang Sun: ; Yang Song: ; Pu Chun Ke: ; Feng Ding:
| | - Aleksandr Kakinen
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane Qld 4072, Australia
| | - Xulin Wan
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, College of Food Science, Southwest University, 2 Tiansheng Rd, Beibei District, Chongqing, 400715, China
| | - Niamh Moriarty
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, 30 Royal Parade, Parkville VIC 3052, Australia
| | - Cameron P.J. Hunt
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, 30 Royal Parade, Parkville VIC 3052, Australia
| | - Yuhuan Li
- Zhongshan Hospital, Fudan University, 111 Yixueyuan Rd, Xuhui District, Shanghai, 200032, China
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
| | - Nicholas Andrikopoulos
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
| | - Aparna Nandakumar
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
| | - Thomas P. Davis
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane Qld 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
| | - Clare L. Parish
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, 30 Royal Parade, Parkville VIC 3052, Australia
| | - Yang Song
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, College of Pharmaceutical Sciences, Southwest University, 2 Tiansheng Rd, Beibei District, Chongqing, 400715, China
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
- Address correspondence to: Yunxiang Sun: ; Yang Song: ; Pu Chun Ke: ; Feng Ding:
| | - Pu Chun Ke
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane Qld 4072, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
- Address correspondence to: Yunxiang Sun: ; Yang Song: ; Pu Chun Ke: ; Feng Ding:
| | - Feng Ding
- Department of Physics and Astronomy, Clemson University, Clemson, SC 29634, United States
- Address correspondence to: Yunxiang Sun: ; Yang Song: ; Pu Chun Ke: ; Feng Ding:
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Kagan BJ, Ermine CM, Frausin S, Parish CL, Nithianantharajah J, Thompson LH. Focal Ischemic Injury to the Early Neonatal Rat Brain Models Cognitive and Motor Deficits with Associated Histopathological Outcomes Relevant to Human Neonatal Brain Injury. Int J Mol Sci 2021; 22:ijms22094740. [PMID: 33947043 PMCID: PMC8124303 DOI: 10.3390/ijms22094740] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 04/27/2021] [Accepted: 04/28/2021] [Indexed: 01/08/2023] Open
Abstract
Neonatal arterial ischemic stroke is one of the more severe birth complications. The injury can result in extensive neurological damage and is robustly associated with later diagnoses of cerebral palsy (CP). An important part of efforts to develop new therapies include the on-going refinement and understanding of animal models that capture relevant clinical features of neonatal brain injury leading to CP. The potent vasoconstrictor peptide, Endothelin-1 (ET-1), has previously been utilised in animal models to reduce local blood flow to levels that mimic ischemic stroke. Our previous work in this area has shown that it is an effective and technically simple approach for modelling ischemic injury at very early neonatal ages, resulting in stable deficits in motor function. Here, we aimed to extend this model to also examine the impact on cognitive function. We show that focal delivery of ET-1 to the cortex of Sprague Dawley rats on postnatal day 0 (P0) resulted in impaired learning in a touchscreen-based test of visual discrimination and correlated with important clinical features of CP including damage to large white matter structures.
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Abstract
Stem-cell-derived transplants may soon be a promising treatment option for Parkinson’s disease. In preparation for clinical trial, Piao et al.1 report on generating a clinical-grade dopaminergic progenitor cell product and its rigorous testing to ensure safety and efficacy.
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Affiliation(s)
- Clare L Parish
- The Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia
| | - Lachlan H Thompson
- The Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia
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14
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McQuade RM, Singleton LM, Wu H, Lee S, Constable R, Di Natale M, Ringuet MT, Berger JP, Kauhausen J, Parish CL, Finkelstein DI, Furness JB, Diwakarla S. The association of enteric neuropathy with gut phenotypes in acute and progressive models of Parkinson's disease. Sci Rep 2021; 11:7934. [PMID: 33846426 PMCID: PMC8041759 DOI: 10.1038/s41598-021-86917-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 11/16/2020] [Accepted: 03/10/2021] [Indexed: 02/07/2023] Open
Abstract
Parkinson's disease (PD) is associated with neuronal damage in the brain and gut. This work compares changes in the enteric nervous system (ENS) of commonly used mouse models of PD that exhibit central neuropathy and a gut phenotype. Enteric neuropathy was assessed in five mouse models: peripheral injection of MPTP; intracerebral injection of 6-OHDA; oral rotenone; and mice transgenic for A53T variant human α-synuclein with and without rotenone. Changes in the ENS of the colon were quantified using pan-neuronal marker, Hu, and neuronal nitric oxide synthase (nNOS) and were correlated with GI function. MPTP had no effect on the number of Hu+ neurons but was associated with an increase in Hu+ nuclear translocation (P < 0.04). 6-OHDA lesioned mice had significantly fewer Hu+ neurons/ganglion (P < 0.02) and a reduced proportion of nNOS+ neurons in colon (P < 0.001). A53T mice had significantly fewer Hu+ neurons/area (P < 0.001) and exhibited larger soma size (P < 0.03). Treatment with rotenone reduced the number of Hu+ cells/mm2 in WT mice (P < 0.006) and increased the proportion of Hu+ translocated cells in both WT (P < 0.02) and A53T mice (P < 0.04). All PD models exhibited a degree of enteric neuropathy, the extent and type of damage to the ENS, however, was dependent on the model.
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Affiliation(s)
- Rachel M McQuade
- Department of Medicine, Western Health, Melbourne University, Sunshine, VIC, 3021, Australia.
- College of Health and Biomedicine, Victoria University, Sunshine, VIC, 3021, Australia.
- Digestive Physiology and Nutrition Laboratory, The Florey Institute of Neuroscience and Mental Health, Parkville, VIC, 3010, Australia.
| | - Lewis M Singleton
- Digestive Physiology and Nutrition Laboratory, The Florey Institute of Neuroscience and Mental Health, Parkville, VIC, 3010, Australia
| | - Hongyi Wu
- Department of Anatomy and Neuroscience, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Sophie Lee
- Department of Anatomy and Neuroscience, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Remy Constable
- Digestive Physiology and Nutrition Laboratory, The Florey Institute of Neuroscience and Mental Health, Parkville, VIC, 3010, Australia
| | - Madeleine Di Natale
- Digestive Physiology and Nutrition Laboratory, The Florey Institute of Neuroscience and Mental Health, Parkville, VIC, 3010, Australia
| | - Mitchell T Ringuet
- Digestive Physiology and Nutrition Laboratory, The Florey Institute of Neuroscience and Mental Health, Parkville, VIC, 3010, Australia
| | | | - Jessica Kauhausen
- Stem Cells and Neural Development Laboratory, The Florey Institute of Neuroscience and Mental Health, Parkville, VIC, 3010, Australia
| | - Clare L Parish
- Stem Cells and Neural Development Laboratory, The Florey Institute of Neuroscience and Mental Health, Parkville, VIC, 3010, Australia
| | - David I Finkelstein
- Parkinson's Disease Laboratory, The Florey Institute of Neuroscience and Mental Health, Parkville, VIC, 3010, Australia
| | - John B Furness
- Digestive Physiology and Nutrition Laboratory, The Florey Institute of Neuroscience and Mental Health, Parkville, VIC, 3010, Australia
- Department of Anatomy and Neuroscience, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Shanti Diwakarla
- Department of Medicine, Western Health, Melbourne University, Sunshine, VIC, 3021, Australia
- Digestive Physiology and Nutrition Laboratory, The Florey Institute of Neuroscience and Mental Health, Parkville, VIC, 3010, Australia
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15
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Gantner CW, Hunt CPJ, Niclis JC, Penna V, McDougall SJ, Thompson LH, Parish CL. FGF-MAPK signaling regulates human deep-layer corticogenesis. Stem Cell Reports 2021; 16:1262-1275. [PMID: 33836146 PMCID: PMC8185433 DOI: 10.1016/j.stemcr.2021.03.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 03/12/2021] [Accepted: 03/15/2021] [Indexed: 11/25/2022] Open
Abstract
Despite heterogeneity across the six layers of the mammalian cortex, all excitatory neurons are generated from a single founder population of neuroepithelial stem cells. However, how these progenitors alter their layer competence over time remains unknown. Here, we used human embryonic stem cell-derived cortical progenitors to examine the role of fibroblast growth factor (FGF) and Notch signaling in influencing cell fate, assessing their impact on progenitor phenotype, cell-cycle kinetics, and layer specificity. Forced early cell-cycle exit, via Notch inhibition, caused rapid, near-exclusive generation of deep-layer VI neurons. In contrast, prolonged FGF2 promoted proliferation and maintained progenitor identity, delaying laminar progression via MAPK-dependent mechanisms. Inhibiting MAPK extended cell-cycle length and led to generation of layer-V CTIP2+ neurons by repressing alternative laminar fates. Taken together, FGF/MAPK regulates the proliferative/neurogenic balance in deep-layer corticogenesis and provides a resource for generating layer-specific neurons for studying development and disease. FGF/MAPK regulates the proliferative/neurogenic balance in deep-layer corticogenesis FGF/MAPK signaling maintains the progenitor pool and generates layer-VI neurons MAPK inhibition prolongs cell cycle to yield layer-V neurons, repressing other fates Protocols to generate layer-specific cortical neurons to study development and disease
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Affiliation(s)
- Carlos W Gantner
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3010, Australia.
| | - Cameron P J Hunt
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Jonathan C Niclis
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Vanessa Penna
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Stuart J McDougall
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Lachlan H Thompson
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Clare L Parish
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3010, Australia
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16
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Chai XY, Diwakarla S, Pustovit RV, McQuade RM, Di Natale M, Ermine CM, Parish CL, Finkelstein DI, Furness JB. Investigation of nerve pathways mediating colorectal dysfunction in Parkinson's disease model produced by lesion of nigrostriatal dopaminergic neurons. Neurogastroenterol Motil 2020; 32:e13893. [PMID: 32512642 DOI: 10.1111/nmo.13893] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 02/19/2020] [Revised: 05/02/2020] [Accepted: 05/04/2020] [Indexed: 12/20/2022]
Abstract
BACKGROUND Gastrointestinal (GI) dysfunction, including constipation, is a common non-motor symptom of Parkinson's disease (PD). The toxin 6-hydroxydopamine (6OHDA) produces the symptoms of PD, surprisingly including constipation, after it is injected into the medial forebrain bundle (MFB). However, the mechanisms involved in PD-associated constipation caused by central application of 6OHDA remain unknown. We investigated effects of 6OHDA lesioning of the MFB on motor performance and GI function. METHODS Male Sprague Dawley rats were unilaterally injected with 6OHDA in the MFB. Colorectal propulsion was assessed by bead expulsion after 4 weeks and by recording colorectal contractions and propulsion after 5 weeks. Enteric nervous system (ENS) neuropathy was examined by immunohistochemistry. KEY RESULTS When compared to shams, 6OHDA-lesioned rats had significantly increased times of bead expulsion from the colorectum, indicative of colon dysmotility. Administration of the colokinetic, capromorelin, that stimulates defecation centers in the spinal cord, increased the number of contractions and colorectal propulsion in both groups compared to baseline; however, the effectiveness of capromorelin in 6OHDA-lesioned rats was significantly reduced in comparison with shams, indicating that 6OHDA animals have reduced responsiveness of the spinal defecation centers. Enteric neuropathy was observed in the distal colon, revealing that lesion of the MFB has downstream effects at the cellular level, remote from the site of 6OHDA administration. CONCLUSIONS & INFERENCES We conclude that there are trans-synaptic effects of the proximal, forebrain, lesion of pathways from the brain that send signals down the spinal cord, at the levels of the defecation centers and the ENS.
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Affiliation(s)
- Xin-Yi Chai
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Vic, Australia
| | - Shanti Diwakarla
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Vic, Australia
| | - Ruslan V Pustovit
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Vic, Australia.,Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Vic, Australia
| | - Rachel M McQuade
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Vic, Australia.,Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Vic, Australia
| | - Madeleine Di Natale
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Vic, Australia.,Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Vic, Australia
| | - Charlotte M Ermine
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Vic, Australia
| | - Clare L Parish
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Vic, Australia
| | - David I Finkelstein
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Vic, Australia
| | - John B Furness
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Vic, Australia.,Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Vic, Australia
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17
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Abstract
Here, we describe a xeno-free, feeder-free, and chemically defined protocol for the generation of ventral midbrain dopaminergic (vmDA) progenitors from human pluripotent stem cells (hPSCs). This simple-to-follow protocol results in high yields of cryopreservable dopamine neurons across multiple hPSC lines. Wnt signaling is the critical component of the differentiation and can be finely adjusted in a line-dependent manner to enhance production of dopamine neurons for the purposes of transplantation, studying development and homeostasis, disease modeling, drug discovery, and drug development. For complete details on the use and execution of this protocol, please refer to Gantner et al. (2020) and Niclis et al. (2017a). Reproducible differentiation of human dopamine neurons from multiple hPSC lines Dopamine progenitors can be cryopreserved for downstream applications Dopamine neurons mature in vitro, enabling screening or developmental studies Transplanted dopamine progenitors are capable of restoring motor function
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Affiliation(s)
- Carlos W Gantner
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Agustín Cota-Coronado
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia.,Biotecnología Médica y Farmacéutica CONACYT, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco (CIATEJ), Guadalajara 44270, Mexico
| | - Lachlan H Thompson
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Clare L Parish
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia
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18
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Ermine CM, Wright JL, Stanic D, Parish CL, Thompson LH. Ischemic Injury Does Not Stimulate Striatal Neuron Replacement Even during Periods of Active Striatal Neurogenesis. iScience 2020; 23:101175. [PMID: 32480130 PMCID: PMC7262560 DOI: 10.1016/j.isci.2020.101175] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 04/27/2020] [Accepted: 05/13/2020] [Indexed: 12/24/2022] Open
Abstract
Ischemic damage to the adult rodent forebrain has been widely used as a model system to study injury-induced neurogenesis, resulting in contradictory reports regarding the capacity of the postnatal brain to replace striatal projection neurons. Here we used a software-assisted, confocal approach to survey thousands of cells generated after striatal ischemic injury in rats and showed that injury fails not only to stimulate production of new striatal projection neurons in the adult brain but also to do so in the neonatal brain at early postnatal ages not previously explored. Conceptually this is significant, because it shows that even during periods of active striatal neurogenesis, injury is not a sufficient stimulus to promote replacement of these neurons. Understanding the intrinsic capacity of the postnatal brain to replace neurons in response to injury is fundamental to the development of “self-repair” therapies. Phenotyping of thousands of cells generated after striatal ischemic injury Confirms previous reports on lack of injury-induced adult striatal neurogenesis No “self-repair” even during active periods of neonatal striatal neurogenesis
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Affiliation(s)
- Charlotte M Ermine
- The Florey Institute for Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia.
| | - Jordan L Wright
- The Florey Institute for Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Davor Stanic
- The Florey Institute for Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Clare L Parish
- The Florey Institute for Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Lachlan H Thompson
- The Florey Institute for Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia.
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19
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Lee KM, Hawi ZH, Parkington HC, Parish CL, Kumar PV, Polo JM, Bellgrove MA, Tong J. The application of human pluripotent stem cells to model the neuronal and glial components of neurodevelopmental disorders. Mol Psychiatry 2020; 25:368-378. [PMID: 31455859 DOI: 10.1038/s41380-019-0495-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 05/19/2019] [Accepted: 06/24/2019] [Indexed: 12/24/2022]
Abstract
Cellular models of neurodevelopmental disorders provide a valuable experimental system to uncover disease mechanisms and novel therapeutic strategies. The ability of induced pluripotent stem cells (iPSCs) to generate diverse brain cell types offers great potential to model several neurodevelopmental disorders. Further patient-derived iPSCs have the unique genetic and molecular signature of the affected individuals, which allows researchers to address limitations of transgenic behavioural models, as well as generate hypothesis-driven models to study disorder-relevant phenotypes at a cellular level. In this article, we review the extant literature that has used iPSC-based modelling to understand the neuronal and glial contributions to neurodevelopmental disorders including autism spectrum disorder (ASD), Rett syndrome, bipolar disorder (BP), and schizophrenia. For instance, several molecular candidates have been shown to influence cellular phenotypes in three-dimensional iPSC-based models of ASD patients. Delays in differentiation of astrocytes and morphological changes of neurons are associated with Rett syndrome. In the case of bipolar disorders and schizophrenia, patient-derived models helped to identify cellular phenotypes associated with neuronal deficits (e.g., excitability) and mutation-specific abnormalities in oligodendrocytes (e.g., CSPG4). Further we provide a critical review of the current limitations of this field and provide methodological suggestions to enhance future modelling efforts of neurodevelopmental disorders. Future developments in experimental design and methodology of disease modelling represent an exciting new avenue relevant to neurodevelopmental disorders.
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Affiliation(s)
- K M Lee
- Turner Institute for Brain and Mental Health and the School of Psychological Sciences, Monash University, Melbourne, Australia
| | - Z H Hawi
- Turner Institute for Brain and Mental Health and the School of Psychological Sciences, Monash University, Melbourne, Australia
| | - H C Parkington
- Biomedicine Discovery Institute, Monash University, Melbourne, Australia
| | - C L Parish
- Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - P V Kumar
- Turner Institute for Brain and Mental Health and the School of Psychological Sciences, Monash University, Melbourne, Australia
| | - J M Polo
- Biomedicine Discovery Institute, Monash University, Melbourne, Australia
| | - M A Bellgrove
- Turner Institute for Brain and Mental Health and the School of Psychological Sciences, Monash University, Melbourne, Australia
| | - J Tong
- Turner Institute for Brain and Mental Health and the School of Psychological Sciences, Monash University, Melbourne, Australia.
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20
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Cembran A, Bruggeman KF, Williams RJ, Parish CL, Nisbet DR. Biomimetic Materials and Their Utility in Modeling the 3-Dimensional Neural Environment. iScience 2020; 23:100788. [PMID: 31954980 PMCID: PMC6970178 DOI: 10.1016/j.isci.2019.100788] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 10/30/2019] [Accepted: 12/13/2019] [Indexed: 02/06/2023] Open
Abstract
The brain is a complex 3-dimensional structure, the organization of which provides a local environment that directly influences the survival, proliferation, differentiation, migration, and plasticity of neurons. To probe the effects of damage and disease on these cells, a synthetic environment is needed. Three-dimensional culturing of stem cells, neural progenitors, and neurons within fabricated biomaterials has demonstrated superior biomimetic properties over conventional 2-dimensional cultureware, offering direct recapitulation of both cell-cell and cell-extracellular matrix interactions. Within this review we address the benefits of deploying biomaterials as advanced cell culture tools capable of influencing neuronal fate and as in vitro models of the native in vivo microenvironment. We highlight recent and promising biomaterials approaches toward understanding neural network and their function relevant to neurodevelopment and provide our perspective on how these materials can be engineered and programmed to study both the healthy and diseased nervous system.
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Affiliation(s)
- Arianna Cembran
- Laboratory of Advanced Biomaterials, Research School of Electrical, Energy and Materials Engineering, The Australian National University, Canberra, ACT 2600, Australia
| | - Kiara F Bruggeman
- Laboratory of Advanced Biomaterials, Research School of Electrical, Energy and Materials Engineering, The Australian National University, Canberra, ACT 2600, Australia
| | | | - Clare L Parish
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Melbourne, VIC 3010, Australia.
| | - David R Nisbet
- Laboratory of Advanced Biomaterials, Research School of Electrical, Energy and Materials Engineering, The Australian National University, Canberra, ACT 2600, Australia.
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21
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Ermine CM, Somaa F, Wang TY, Kagan BJ, Parish CL, Thompson LH. Long-Term Motor Deficit and Diffuse Cortical Atrophy Following Focal Cortical Ischemia in Athymic Rats. Front Cell Neurosci 2019; 13:552. [PMID: 31920553 PMCID: PMC6927997 DOI: 10.3389/fncel.2019.00552] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 11/29/2019] [Indexed: 12/24/2022] Open
Abstract
Development of new stroke therapies requires animal models that recapitulate the pathophysiological and functional consequences of ischemic brain damage over time-frames relevant to the therapeutic intervention. This is particularly relevant for the rapidly developing area of stem cell therapies, where functional replacement of circuitry will require maturation of transplanted human cells over months. An additional challenge is the establishment of models of ischemia with stable behavioral phenotypes in chronically immune-suppressed animals to allow for long-term survival of human cell grafts. Here we report that microinjection of endothelin-1 into the sensorimotor cortex of athymic rats results in ischemic damage with a sustained deficit in function of the contralateral forepaw that persists for up to 9 months. The histological post-mortem analysis revealed chronic and diffuse atrophy of the ischemic cortical hemisphere that continued to progress over 9 months. Secondary atrophy remote to the primary site of injury and its relationship with long-term cognitive and functional decline is now recognized in human populations. Thus, focal cortical infarction in athymic rats mirrors important pathophysiological and functional features relevant to human stroke, and will be valuable for assessing efficacy of stem cell based therapies.
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Affiliation(s)
- Charlotte M Ermine
- Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia
| | - Fahad Somaa
- Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia
| | - Ting-Yi Wang
- Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia
| | - Brett J Kagan
- Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia
| | - Clare L Parish
- Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia
| | - Lachlan H Thompson
- Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia
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22
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Bye CR, Penna V, de Luzy IR, Gantner CW, Hunt CPJ, Thompson LH, Parish CL. Transcriptional Profiling of Xenogeneic Transplants: Examining Human Pluripotent Stem Cell-Derived Grafts in the Rodent Brain. Stem Cell Reports 2019; 13:877-890. [PMID: 31680060 PMCID: PMC6895727 DOI: 10.1016/j.stemcr.2019.10.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 10/01/2019] [Accepted: 10/01/2019] [Indexed: 12/23/2022] Open
Abstract
Human pluripotent stem cells are a valuable resource for transplantation, yet our ability to profile xenografts is largely limited to low-throughput immunohistochemical analysis by difficulties in readily isolating grafts for transcriptomic and/or proteomic profiling. Here, we present a simple methodology utilizing differences in the RNA sequence between species to discriminate xenograft from host gene expression (using qPCR or RNA sequencing [RNA-seq]). To demonstrate the approach, we assessed grafts of undifferentiated human stem cells and neural progenitors in the rodent brain. Xenograft-specific qPCR provided sensitive detection of proliferative cells, and identified germ layer markers and appropriate neural maturation genes across the graft types. Xenograft-specific RNA-seq enabled profiling of the complete transcriptome and an unbiased characterization of graft composition. Such xenograft-specific profiling will be crucial for pre-clinical characterization of grafts and batch-testing of therapeutic cell preparations to ensure safety and functional predictability prior to translation. Interspecies sequence variation allows separation of xenograft and host transcripts Species-specific primers enable profiling of targeted xenograft genes with qPCR Xenograft-specific RNA-seq enables genome-wide transcriptional profiling of grafts Xenogeneic-specific profiling provides unbiased characterization of graft composition
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Affiliation(s)
- Christopher R Bye
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC, Australia.
| | - Vanessa Penna
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC, Australia
| | - Isabelle R de Luzy
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC, Australia
| | - Carlos W Gantner
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC, Australia
| | - Cameron P J Hunt
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC, Australia
| | - Lachlan H Thompson
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC, Australia
| | - Clare L Parish
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC, Australia.
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23
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Bruggeman KF, Moriarty N, Dowd E, Nisbet DR, Parish CL. Harnessing stem cells and biomaterials to promote neural repair. Br J Pharmacol 2019; 176:355-368. [PMID: 30444942 PMCID: PMC6329623 DOI: 10.1111/bph.14545] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Revised: 10/16/2018] [Accepted: 10/22/2018] [Indexed: 01/06/2023] Open
Abstract
With the limited capacity for self-repair in the adult CNS, efforts to stimulate quiescent stem cell populations within discrete brain regions, as well as harness the potential of stem cell transplants, offer significant hope for neural repair. These new cells are capable of providing trophic cues to support residual host populations and/or replace those cells lost to the primary insult. However, issues with low-level adult neurogenesis, cell survival, directed differentiation and inadequate reinnervation of host tissue have impeded the full potential of these therapeutic approaches and their clinical advancement. Biomaterials offer novel approaches to stimulate endogenous neurogenesis, as well as for the delivery and support of neural progenitor transplants, providing a tissue-appropriate physical and trophic milieu for the newly integrating cells. In this review, we will discuss the various approaches by which bioengineered scaffolds may improve stem cell-based therapies for repair of the CNS.
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Affiliation(s)
- K F Bruggeman
- Laboratory of Advanced Biomaterials, Research School of EngineeringThe Australian National UniversityCanberraACTAustralia
| | - N Moriarty
- Pharmacology and Therapeutics and Galway Neuroscience CentreNational University of Ireland GalwayGalwayIreland
| | - E Dowd
- Pharmacology and Therapeutics and Galway Neuroscience CentreNational University of Ireland GalwayGalwayIreland
| | - D R Nisbet
- Laboratory of Advanced Biomaterials, Research School of EngineeringThe Australian National UniversityCanberraACTAustralia
| | - C L Parish
- The Florey Institute of Neuroscience and Mental HealthThe University of MelbourneParkvilleVICAustralia
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24
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Wright JL, Chu HX, Kagan BJ, Ermine CM, Kauhausen JA, Parish CL, Sobey CG, Thompson LH. Local Injection of Endothelin-1 in the Early Neonatal Rat Brain Models Ischemic Damage Associated with Motor Impairment and Diffuse Loss in Brain Volume. Neuroscience 2018; 393:110-122. [PMID: 30300704 DOI: 10.1016/j.neuroscience.2018.09.043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 09/23/2018] [Accepted: 09/28/2018] [Indexed: 11/16/2022]
Abstract
Cerebral palsy is an irreversible movement disorder resulting from cerebral damage sustained during prenatal or neonatal brain development. As survival outcomes for preterm injury improve, there is increasing need to model ischemic injury at earlier neonatal time-points to better understand the subsequent pathological consequences. Here we demonstrate a novel neonatal ischemic model using focal administration of the potent vasoconstrictor peptide, endothelin-1 (ET-1), in newborn rats. The functional and histopathological outcomes compare favourably to those reported following the widely used hypoxic ischemia (HI) model. These include a robust motor deficit sustained into adulthood and recapitulation of hallmark features of preterm human brain injury, including atrophy of subcortical white matter and periventricular fiber bundles. Compared to procedures involving carotid artery manipulation and periods of hypoxia, the ET-1 ischemia model represents a rapid and technically simplified model more amenable to larger cohorts and with the potential to direct the locus of ischemic damage to specific brain areas.
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Affiliation(s)
- Jordan L Wright
- The Florey Institute of Neuroscience and Mental Health, Melbourne, VIC, Australia.
| | - Hannah X Chu
- Biomedicine Discovery Institute and Department of Pharmocology, Monash University, Melbourne, VIC, Australia
| | - Brett J Kagan
- The Florey Institute of Neuroscience and Mental Health, Melbourne, VIC, Australia
| | - Charlotte M Ermine
- The Florey Institute of Neuroscience and Mental Health, Melbourne, VIC, Australia
| | - Jessica A Kauhausen
- The Florey Institute of Neuroscience and Mental Health, Melbourne, VIC, Australia
| | - Clare L Parish
- The Florey Institute of Neuroscience and Mental Health, Melbourne, VIC, Australia
| | - Christopher G Sobey
- Physiology, Anatomy and Microbiology, School of Life Sciences, La Trobe University, Melbourne, VIC, Australia
| | - Lachlan H Thompson
- The Florey Institute of Neuroscience and Mental Health, Melbourne, VIC, Australia.
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25
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Moriarty N, Parish CL, Dowd E. Primary tissue for cellular brain repair in Parkinson's disease: Promise, problems and the potential of biomaterials. Eur J Neurosci 2018; 49:472-486. [PMID: 29923311 DOI: 10.1111/ejn.14051] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 06/06/2018] [Accepted: 06/12/2018] [Indexed: 12/19/2022]
Abstract
The dopamine precursor, levodopa, remains the "gold standard" treatment for Parkinson's disease, and, although it provides superlative efficacy in the early stages of the disease, its long-term use is limited by the development of severe motor side effects and a significant abating of therapeutic efficacy. Therefore, there remains a major unmet clinical need for the development of effective neuroprotective, neurorestorative or neuroreparatory therapies for this condition. The relatively selective loss of dopaminergic neurons from the nigrostriatal pathway makes Parkinson's disease an ideal candidate for reparative cell therapies, wherein the dopaminergic neurons that are lost in the condition are replaced through direct cell transplantation into the brain. To date, this approach has been developed, validated and clinically assessed using dopamine neuron-rich foetal ventral mesencephalon grafts which have been shown to survive and reinnervate the denervated brain after transplantation, and to restore motor function. However, despite long-term symptomatic relief in some patients, significant limitations, including poor graft survival and the impact this has on the number of foetal donors required, have prevented this therapy being more widely adopted as a restorative approach for Parkinson's disease. Injectable biomaterial scaffolds have the potential to improve the delivery, engraftment and survival of these grafts in the brain through provision of a supportive microenvironment for cell adhesion, growth and immune shielding. This article will briefly review the development of primary cell therapies for brain repair in Parkinson's disease and will consider the emerging literature which highlights the potential of using injectable biomaterial hydrogels in this context.
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Affiliation(s)
- Niamh Moriarty
- Pharmacology & Therapeutics and Galway Neuroscience Centre, National University of Ireland Galway, Galway, Ireland
| | - Clare L Parish
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, Victoria, Australia
| | - Eilís Dowd
- Pharmacology & Therapeutics and Galway Neuroscience Centre, National University of Ireland Galway, Galway, Ireland
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26
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Somaa FA, Wang TY, Niclis JC, Bruggeman KF, Kauhausen JA, Guo H, McDougall S, Williams RJ, Nisbet DR, Thompson LH, Parish CL. Peptide-Based Scaffolds Support Human Cortical Progenitor Graft Integration to Reduce Atrophy and Promote Functional Repair in a Model of Stroke. Cell Rep 2018; 20:1964-1977. [PMID: 28834757 DOI: 10.1016/j.celrep.2017.07.069] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 06/07/2017] [Accepted: 07/24/2017] [Indexed: 12/22/2022] Open
Abstract
Stem cell transplants offer significant hope for brain repair following ischemic damage. Pre-clinical work suggests that therapeutic mechanisms may be multi-faceted, incorporating bone-fide circuit reconstruction by transplanted neurons, but also protection/regeneration of host circuitry. Here, we engineered hydrogel scaffolds to form "bio-bridges" within the necrotic lesion cavity, providing physical and trophic support to transplanted human embryonic stem cell-derived cortical progenitors, as well as residual host neurons. Scaffolds were fabricated by the self-assembly of peptides for a laminin-derived epitope (IKVAV), thereby mimicking the brain's major extracellular protein. Following focal ischemia in rats, scaffold-supported cell transplants induced progressive motor improvements over 9 months, compared to cell- or scaffold-only implants. These grafts were larger, exhibited greater neuronal differentiation, and showed enhanced electrophysiological properties reflective of mature, integrated neurons. Varying graft timing post-injury enabled us to attribute repair to both neuroprotection and circuit replacement. These findings highlight strategies to improve the efficiency of stem cell grafts for brain repair.
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Affiliation(s)
- Fahad A Somaa
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Ting-Yi Wang
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Jonathan C Niclis
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Kiara F Bruggeman
- Laboratory of Advanced Materials, Research School of Engineering, The Australian National University, Canberra, ACT 2601, Australia
| | - Jessica A Kauhausen
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Haoyao Guo
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Stuart McDougall
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia
| | | | - David R Nisbet
- Laboratory of Advanced Materials, Research School of Engineering, The Australian National University, Canberra, ACT 2601, Australia
| | - Lachlan H Thompson
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia.
| | - Clare L Parish
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3052, Australia.
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27
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Ermine CM, Wright JL, Frausin S, Kauhausen JA, Parish CL, Stanic D, Thompson LH. Modelling the dopamine and noradrenergic cell loss that occurs in Parkinson's disease and the impact on hippocampal neurogenesis. Hippocampus 2018; 28:327-337. [PMID: 29431270 PMCID: PMC5969306 DOI: 10.1002/hipo.22835] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Revised: 01/07/2018] [Accepted: 02/08/2018] [Indexed: 01/03/2023]
Abstract
Key pathological features of Parkinson's Disease (PD) include the progressive degeneration of midbrain dopaminergic (DA) neurons and hindbrain noradrenergic (NA) neurons. The loss of DA neurons has been extensively studied and is the main cause of motor dysfunction. Importantly, however, there are a range of ‘non‐movement’ related features of PD including cognitive dysfunction, sleep disturbances and mood disorders. The origins for these non‐motor symptoms are less clear, but a possible substrate for cognitive decline may be reduced adult‐hippocampal neurogenesis, which is reported to be impaired in PD. The mechanisms underlying reduced neurogenesis in PD are not well established. Here we tested the hypothesis that NA and DA depletion, as occurs in PD, impairs hippocampal neurogenesis. We used 6‐hydroxydopamine or the immunotoxin dopamine‐β‐hydroxylase‐saporin to selectively lesion DA or NA neurons, respectively, in adult Sprague Dawley rats and assessed hippocampal neurogenesis through phenotyping of cells birth‐dated using 5‐bromo‐2′‐deoxyuridine. The results showed no difference in proliferation or differentiation of newborn cells in the subgranular zone of the dentate gyrus after NA or DA lesions. This suggests that impairment of hippocampal neurogenesis in PD likely results from mechanisms independent of, or in addition to degeneration of DA and NA neurons.
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Affiliation(s)
- Charlotte M Ermine
- Neurodegeneration division, The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria, Australia
| | - Jordan L Wright
- Neurodegeneration division, The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria, Australia
| | - Stefano Frausin
- Neurodegeneration division, The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria, Australia
| | - Jessica A Kauhausen
- Neurodegeneration division, The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria, Australia
| | - Clare L Parish
- Neurodegeneration division, The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria, Australia
| | - Davor Stanic
- Neurodegeneration division, The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria, Australia
| | - Lachlan H Thompson
- Neurodegeneration division, The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria, Australia
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28
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Ramdzan YM, Trubetskov MM, Ormsby AR, Newcombe EA, Sui X, Tobin MJ, Bongiovanni MN, Gras SL, Dewson G, Miller JML, Finkbeiner S, Moily NS, Niclis J, Parish CL, Purcell AW, Baker MJ, Wilce JA, Waris S, Stojanovski D, Böcking T, Ang CS, Ascher DB, Reid GE, Hatters DM. Huntingtin Inclusions Trigger Cellular Quiescence, Deactivate Apoptosis, and Lead to Delayed Necrosis. Cell Rep 2018; 19:919-927. [PMID: 28467905 DOI: 10.1016/j.celrep.2017.04.029] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 03/16/2017] [Accepted: 04/10/2017] [Indexed: 12/11/2022] Open
Abstract
Competing models exist in the literature for the relationship between mutant Huntingtin exon 1 (Httex1) inclusion formation and toxicity. In one, inclusions are adaptive by sequestering the proteotoxicity of soluble Httex1. In the other, inclusions compromise cellular activity as a result of proteome co-aggregation. Using a biosensor of Httex1 conformation in mammalian cell models, we discovered a mechanism that reconciles these competing models. Newly formed inclusions were composed of disordered Httex1 and ribonucleoproteins. As inclusions matured, Httex1 reconfigured into amyloid, and other glutamine-rich and prion domain-containing proteins were recruited. Soluble Httex1 caused a hyperpolarized mitochondrial membrane potential, increased reactive oxygen species, and promoted apoptosis. Inclusion formation triggered a collapsed mitochondrial potential, cellular quiescence, and deactivated apoptosis. We propose a revised model where sequestration of soluble Httex1 inclusions can remove the trigger for apoptosis but also co-aggregate other proteins, which curtails cellular metabolism and leads to a slow death by necrosis.
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Affiliation(s)
- Yasmin M Ramdzan
- Department of Biochemistry and Molecular Biology and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Mikhail M Trubetskov
- Department of Biochemistry and Molecular Biology and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Angelique R Ormsby
- Department of Biochemistry and Molecular Biology and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Estella A Newcombe
- Department of Biochemistry and Molecular Biology and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Xiaojing Sui
- Department of Biochemistry and Molecular Biology and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Mark J Tobin
- Australian Synchrotron, 800 Blackburn Road, Clayton, VIC 3168, Australia
| | | | - Sally L Gras
- Department of Chemical and Biomolecular Engineering and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Grant Dewson
- Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, Melbourne, VIC 3010, Australia
| | - Jason M L Miller
- University of Michigan Kellogg Eye Center, 1000 Wall Street, Ann Arbor, MI 48105, USA
| | - Steven Finkbeiner
- Gladstone Institute of Neurological Disease, 1650 Owens Street, San Francisco, CA 94158-2261, USA
| | - Nagaraj S Moily
- Department of Biochemistry and Molecular Biology and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Jonathan Niclis
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Clare L Parish
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Anthony W Purcell
- Monash Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology, Monash University, Clayton, VIC 3800, Australia
| | - Michael J Baker
- Department of Biochemistry and Molecular Biology and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Jacqueline A Wilce
- Monash Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology, Monash University, Clayton, VIC 3800, Australia
| | - Saboora Waris
- Monash Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology, Monash University, Clayton, VIC 3800, Australia
| | - Diana Stojanovski
- Department of Biochemistry and Molecular Biology and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Till Böcking
- School of Medical Sciences, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Ching-Seng Ang
- Bio21 Mass Spectrometry and Proteomics Facility, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - David B Ascher
- Department of Biochemistry and Molecular Biology and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Gavin E Reid
- Department of Biochemistry and Molecular Biology and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, VIC 3010, Australia; School of Chemistry, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - Danny M Hatters
- Department of Biochemistry and Molecular Biology and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, VIC 3010, Australia.
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29
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Dworkin JP, Adelman LA, Ajluni T, Andronikov AV, Aponte JC, Bartels AE, Beshore E, Bierhaus EB, Brucato JR, Bryan BH, Burton AS, Callahan MP, Castro-Wallace SL, Clark BC, Clemett SJ, Connolly HC, Cutlip WE, Daly SM, Elliott VE, Elsila JE, Enos HL, Everett DF, Franchi IA, Glavin DP, Graham HV, Hendershot JE, Harris JW, Hill SL, Hildebrand AR, Jayne GO, Jenkens RW, Johnson KS, Kirsch JS, Lauretta DS, Lewis AS, Loiacono JJ, Lorentson CC, Marshall JR, Martin MG, Matthias LL, McLain HL, Messenger SR, Mink RG, Moore JL, Nakamura-Messenger K, Nuth JA, Owens CV, Parish CL, Perkins BD, Pryzby MS, Reigle CA, Righter K, Rizk B, Russell JF, Sandford SA, Schepis JP, Songer J, Sovinski MF, Stahl SE, Thomas-Keprta K, Vellinga JM, Walker MS. OSIRIS-REx Contamination Control Strategy and Implementation. Space Sci Rev 2018; 214:19. [PMID: 30713357 PMCID: PMC6350808 DOI: 10.1007/s11214-017-0439-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
OSIRIS-REx will return pristine samples of carbonaceous asteroid Bennu. This article describes how pristine was defined based on expectations of Bennu and on a realistic understanding of what is achievable with a constrained schedule and budget, and how that definition flowed to requirements and implementation. To return a pristine sample, the OSIRIS-REx spacecraft sampling hardware was maintained at level 100 A/2 and <180 ng/cm2 of amino acids and hydrazine on the sampler head through precision cleaning, control of materials, and vigilance. Contamination is further characterized via witness material exposed to the spacecraft assembly and testing environment as well as in space. This characterization provided knowledge of the expected background and will be used in conjunction with archived spacecraft components for comparison with the samples when they are delivered to Earth for analysis. Most of all, the cleanliness of the OSIRIS-REx spacecraft was achieved through communication among scientists, engineers, managers, and technicians.
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Affiliation(s)
- J P Dworkin
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - L A Adelman
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
- Arctic Slope Research Corporation, Beltsville, MD USA
| | - T Ajluni
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
- Arctic Slope Research Corporation, Beltsville, MD USA
| | | | - J C Aponte
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
- Catholic University of America, Washington, DC, USA
| | - A E Bartels
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - E Beshore
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA
| | - E B Bierhaus
- Lockheed Martin Space Systems, Littleton, CO, USA
| | - J R Brucato
- INAF Astrophysical Observatory of Arcetri, Florence, Italy
| | - B H Bryan
- Lockheed Martin Space Systems, Littleton, CO, USA
| | - A S Burton
- NASA Johnson Space Center, Houston, TX, USA
| | | | | | - B C Clark
- Space Science Institute, Boulder, CO, USA
| | - S J Clemett
- NASA Johnson Space Center, Houston, TX, USA
- Jacobs Technology, Tullahoma, TN, USA
| | | | - W E Cutlip
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - S M Daly
- NASA Kennedy Space Center, Titusville, FL, USA
| | - V E Elliott
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - J E Elsila
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - H L Enos
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA
| | - D F Everett
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | | | - D P Glavin
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - H V Graham
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
- University of Maryland, College Park, MD, USA
| | - J E Hendershot
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
- Ball Aerospace, Boulder, CO, USA
| | - J W Harris
- Lockheed Martin Space Systems, Littleton, CO, USA
| | - S L Hill
- Jacobs Technology, Tullahoma, TN, USA
- NASA Kennedy Space Center, Titusville, FL, USA
| | | | - G O Jayne
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
- Arctic Slope Research Corporation, Beltsville, MD USA
| | - R W Jenkens
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - K S Johnson
- Lockheed Martin Space Systems, Littleton, CO, USA
| | - J S Kirsch
- Jacobs Technology, Tullahoma, TN, USA
- NASA Kennedy Space Center, Titusville, FL, USA
| | - D S Lauretta
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA
| | - A S Lewis
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - J J Loiacono
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - C C Lorentson
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | | | - M G Martin
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
- Catholic University of America, Washington, DC, USA
| | - L L Matthias
- NASA Kennedy Space Center, Titusville, FL, USA
- Analex, Titusville, FL, USA
| | - H L McLain
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
- Catholic University of America, Washington, DC, USA
| | | | - R G Mink
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - J L Moore
- Lockheed Martin Space Systems, Littleton, CO, USA
| | | | - J A Nuth
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - C V Owens
- NASA Kennedy Space Center, Titusville, FL, USA
| | - C L Parish
- Lockheed Martin Space Systems, Littleton, CO, USA
| | - B D Perkins
- NASA Kennedy Space Center, Titusville, FL, USA
| | - M S Pryzby
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
- ATA Aerospace, Albuquerque, NM, USA
| | - C A Reigle
- Lockheed Martin Space Systems, Littleton, CO, USA
| | - K Righter
- NASA Johnson Space Center, Houston, TX, USA
| | - B Rizk
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA
| | - J F Russell
- Lockheed Martin Space Systems, Littleton, CO, USA
| | - S A Sandford
- NASA Ames Research Center, Moffett Field, CA, USA
| | - J P Schepis
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - J Songer
- Lockheed Martin Space Systems, Littleton, CO, USA
| | - M F Sovinski
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - S E Stahl
- NASA Johnson Space Center, Houston, TX, USA
- JES Tech., Houston, TX, USA
| | - K Thomas-Keprta
- NASA Johnson Space Center, Houston, TX, USA
- Jacobs Technology, Tullahoma, TN, USA
| | - J M Vellinga
- Lockheed Martin Space Systems, Littleton, CO, USA
| | - M S Walker
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
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30
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Alsanie WF, Niclis JC, Hunt CP, De Luzy IR, Penna V, Bye CR, Pouton CW, Haynes J, Firas J, Thompson LH, Parish CL. Specification of murine ground state pluripotent stem cells to regional neuronal populations. Sci Rep 2017; 7:16001. [PMID: 29167563 PMCID: PMC5700195 DOI: 10.1038/s41598-017-16248-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Accepted: 11/08/2017] [Indexed: 11/20/2022] Open
Abstract
Pluripotent stem cells (PSCs) are a valuable tool for interrogating development, disease modelling, drug discovery and transplantation. Despite the burgeoned capability to fate restrict human PSCs to specific neural lineages, comparative protocols for mouse PSCs have not similarly advanced. Mouse protocols fail to recapitulate neural development, consequently yielding highly heterogeneous populations, yet mouse PSCs remain a valuable scientific tool as differentiation is rapid, cost effective and an extensive repertoire of transgenic lines provides an invaluable resource for understanding biology. Here we developed protocols for neural fate restriction of mouse PSCs, using knowledge of embryonic development and recent progress with human equivalents. These methodologies rely upon naïve ground-state PSCs temporarily transitioning through LIF-responsive stage prior to neural induction and rapid exposure to regional morphogens. Neural subtypes generated included those of the dorsal forebrain, ventral forebrain, ventral midbrain and hindbrain. This rapid specification, without feeder layers or embryoid-body formation, resulted in high proportions of correctly specified progenitors and neurons with robust reproducibility. These generated neural progenitors/neurons will provide a valuable resource to further understand development, as well disorders affecting specific neuronal subpopulations.
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Affiliation(s)
- Walaa F Alsanie
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, Australia.,The Department of Medical Laboratories, The Faculty of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Jonathan C Niclis
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, Australia
| | - Cameron P Hunt
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, Australia.,Monash Institute of Pharmaceutical Sciences, Monash University, Melbourne, Australia
| | - Isabelle R De Luzy
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, Australia
| | - Vanessa Penna
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, Australia
| | - Christopher R Bye
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, Australia
| | - Colin W Pouton
- Monash Institute of Pharmaceutical Sciences, Monash University, Melbourne, Australia
| | - John Haynes
- Monash Institute of Pharmaceutical Sciences, Monash University, Melbourne, Australia
| | - Jaber Firas
- The Australian Regenerative Medicine Institute, Monash University, Melbourne, Australia
| | - Lachlan H Thompson
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, Australia
| | - Clare L Parish
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, Australia.
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31
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Bruggeman KF, Wang Y, Maclean FL, Parish CL, Williams RJ, Nisbet DR. Temporally controlled growth factor delivery from a self-assembling peptide hydrogel and electrospun nanofibre composite scaffold. Nanoscale 2017; 9:13661-13669. [PMID: 28876347 DOI: 10.1039/c7nr05004f] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Tissue-specific self-assembling peptide (SAP) hydrogels designed based on biologically relevant peptide sequences have great potential in regenerative medicine. These materials spontaneously form 3D networks of physically assembled nanofibres utilising non-covalent interactions. The nanofibrous structure of SAPs is often compared to that of electrospun scaffolds. These electrospun nanofibers are produced as sheets that can be engineered from a variety of polymers that can be chemically modified to incorporate many molecules including drugs and growth factors. However, their macroscale morphology limits them to wrapping and bandaging applications. Here, for the first time, we combine the benefits of these systems to describe a two-component composite scaffold from these biomaterials, with the design goal of providing a hydrogel scaffold that presents 3D structures, and also has temporal control over drug delivery. Short fibres, cut from electrospun scaffolds, were mixed with our tissue-specific SAP hydrogel to provide a range of nanofibre sizes found in the extracellular matrix (10-300 nm in diameter). The composite material maintained the shear-thinning and void-filling properties of SAP hydrogels that have previously been shown to be effective for minimally invasive material injection, cell delivery and subsequent in vivo integration. Both scaffold components were separately loaded with growth factors, important signaling molecules in tissue regeneration whose rapid degradation limits their clinical efficacy. The two biomaterials provided sequential growth factor delivery profiles: the SAP hydrogel provided a burst release, with the release rate decreasing over 12 hours, while the electrospun nanofibres provided a more constant, sustained delivery. Importantly, this second release commenced 6 days later. The design rules established here to provide temporally distinct release profiles can enable researchers to target specific stages in regeneration, such as the acute immune response versus sustained protection and survival of cells following injury. In summary, this novel composite material combines the physical advantages of SAP hydrogels and electrospun nanofibres, while additionally providing a superior vehicle for the stabilisation and controlled delivery of growth factors necessary for optimal tissue repair.
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Affiliation(s)
- Kiara F Bruggeman
- Laboratory of Advanced Biomaterials, Research School of Engineering, The Australian National University, Canberra, ACT 2601, Australia.
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32
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Niclis JC, Gantner CW, Hunt CPJ, Kauhausen JA, Durnall JC, Haynes JM, Pouton CW, Parish CL, Thompson LH. A PITX3-EGFP Reporter Line Reveals Connectivity of Dopamine and Non-dopamine Neuronal Subtypes in Grafts Generated from Human Embryonic Stem Cells. Stem Cell Reports 2017; 9:868-882. [PMID: 28867345 PMCID: PMC5599268 DOI: 10.1016/j.stemcr.2017.08.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 08/03/2017] [Accepted: 08/04/2017] [Indexed: 12/24/2022] Open
Abstract
Development of safe and effective stem cell-based therapies for brain repair requires an in-depth understanding of the in vivo properties of neural grafts generated from human stem cells. Replacing dopamine neurons in Parkinson's disease remains one of the most anticipated applications. Here, we have used a human PITX3-EGFP embryonic stem cell line to characterize the connectivity of stem cell-derived midbrain dopamine neurons in the dopamine-depleted host brain with an unprecedented level of specificity. The results show that the major A9 and A10 subclasses of implanted dopamine neurons innervate multiple, developmentally appropriate host targets but also that the majority of graft-derived connectivity is non-dopaminergic. These findings highlight the promise of stem cell-based procedures for anatomically correct reconstruction of specific neuronal pathways but also emphasize the scope for further refinement in order to limit the inclusion of uncharacterized and potentially unwanted cell types.
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Affiliation(s)
- Jonathan C Niclis
- Florey Institute of Neuroscience and Mental Health, Royal Parade, Parkville, VIC 3010, Australia
| | - Carlos W Gantner
- Florey Institute of Neuroscience and Mental Health, Royal Parade, Parkville, VIC 3010, Australia
| | - Cameron P J Hunt
- Florey Institute of Neuroscience and Mental Health, Royal Parade, Parkville, VIC 3010, Australia; Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
| | - Jessica A Kauhausen
- Florey Institute of Neuroscience and Mental Health, Royal Parade, Parkville, VIC 3010, Australia
| | - Jennifer C Durnall
- Florey Institute of Neuroscience and Mental Health, Royal Parade, Parkville, VIC 3010, Australia
| | - John M Haynes
- Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
| | - Colin W Pouton
- Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
| | - Clare L Parish
- Florey Institute of Neuroscience and Mental Health, Royal Parade, Parkville, VIC 3010, Australia.
| | - Lachlan H Thompson
- Florey Institute of Neuroscience and Mental Health, Royal Parade, Parkville, VIC 3010, Australia.
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33
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Niclis JC, Turner C, Durnall J, McDougal S, Kauhausen JA, Leaw B, Dottori M, Parish CL, Thompson LH. Long-Distance Axonal Growth and Protracted Functional Maturation of Neurons Derived from Human Induced Pluripotent Stem Cells After Intracerebral Transplantation. Stem Cells Transl Med 2017; 6:1547-1556. [PMID: 28198124 PMCID: PMC5689777 DOI: 10.1002/sctm.16-0198] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Accepted: 10/31/2016] [Indexed: 12/21/2022] Open
Abstract
The capacity for induced pluripotent stem (iPS) cells to be differentiated into a wide range of neural cell types makes them an attractive donor source for autologous neural transplantation therapies aimed at brain repair. Translation to the in vivo setting has been difficult, however, with mixed results in a wide variety of preclinical models of brain injury and limited information on the basic in vivo properties of neural grafts generated from human iPS cells. Here we have generated a human iPS cell line constitutively expressing green fluorescent protein as a basis to identify and characterize grafts resulting from transplantation of neural progenitors into the adult rat brain. The results show that the grafts contain a mix of neural cell types, at various stages of differentiation, including neurons that establish extensive patterns of axonal growth and progressively develop functional properties over the course of 1 year after implantation. These findings form an important basis for the design and interpretation of preclinical studies using human stem cells for functional circuit re‐construction in animal models of brain injury. Stem Cells Translational Medicine2017;6:1547–1556
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Affiliation(s)
- Jonathan C Niclis
- Florey Institute for Neuroscience and Mental Health, Royal Parade, Parkville, Victoria, Australia
| | - Christopher Turner
- Florey Institute for Neuroscience and Mental Health, Royal Parade, Parkville, Victoria, Australia
| | - Jennifer Durnall
- Florey Institute for Neuroscience and Mental Health, Royal Parade, Parkville, Victoria, Australia
| | - Stuart McDougal
- Florey Institute for Neuroscience and Mental Health, Royal Parade, Parkville, Victoria, Australia
| | - Jessica A Kauhausen
- Florey Institute for Neuroscience and Mental Health, Royal Parade, Parkville, Victoria, Australia
| | - Bryan Leaw
- Florey Institute for Neuroscience and Mental Health, Royal Parade, Parkville, Victoria, Australia
| | - Mirella Dottori
- Department of Electrical and Electronic Engineering, Centre for Neural Engineering, University of Melbourne, Royal Parade, Parkville, Victoria, Australia
| | - Clare L Parish
- Florey Institute for Neuroscience and Mental Health, Royal Parade, Parkville, Victoria, Australia
| | - Lachlan H Thompson
- Florey Institute for Neuroscience and Mental Health, Royal Parade, Parkville, Victoria, Australia
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34
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Niclis JC, Gantner CW, Alsanie WF, McDougall SJ, Bye CR, Elefanty AG, Stanley EG, Haynes JM, Pouton CW, Thompson LH, Parish CL. Efficiently Specified Ventral Midbrain Dopamine Neurons from Human Pluripotent Stem Cells Under Xeno-Free Conditions Restore Motor Deficits in Parkinsonian Rodents. Stem Cells Transl Med 2016; 6:937-948. [PMID: 28297587 PMCID: PMC5442782 DOI: 10.5966/sctm.2016-0073] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Accepted: 09/01/2016] [Indexed: 01/04/2023] Open
Abstract
Recent studies have shown evidence for the functional integration of human pluripotent stem cell (hPSC)‐derived ventral midbrain dopamine (vmDA) neurons in animal models of Parkinson’s disease. Although these cells present a sustainable alternative to fetal mesencephalic grafts, a number of hurdles require attention prior to clinical translation. These include the persistent use of xenogeneic reagents and challenges associated with scalability and storage of differentiated cells. In this study, we describe the first fully defined feeder‐ and xenogeneic‐free protocol for the generation of vmDA neurons from hPSCs and utilize two novel reporter knock‐in lines (LMX1A‐eGFP and PITX3‐eGFP) for in‐depth in vitro and in vivo tracking. Across multiple embryonic and induced hPSC lines, this “next generation” protocol consistently increases both the yield and proportion of vmDA neural progenitors (OTX2/FOXA2/LMX1A) and neurons (FOXA2/TH/PITX3) that display classical vmDA metabolic and electrophysiological properties. We identify the mechanism underlying these improvements and demonstrate clinical applicability with the first report of scalability and cryopreservation of bona fide vmDA progenitors at a time amenable to transplantation. Finally, transplantation of xeno‐free vmDA progenitors from LMX1A‐ and PITX3‐eGFP reporter lines into Parkinsonian rodents demonstrates improved engraftment outcomes and restoration of motor deficits. These findings provide important and necessary advancements for the translation of hPSC‐derived neurons into the clinic. Stem Cells Translational Medicine2017;6:937–948
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Affiliation(s)
- Jonathan C. Niclis
- The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Victoria, Australia
| | - Carlos W. Gantner
- The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Victoria, Australia
| | - Walaa F. Alsanie
- The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Victoria, Australia
| | - Stuart J. McDougall
- The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Victoria, Australia
| | - Chris R. Bye
- The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Victoria, Australia
| | - Andrew G. Elefanty
- Murdoch Children’s Research Institute, The Royal Children’s Hospital, Melbourne, Victoria, Australia
- Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, Australia
- Department of Paediatrics, University of Melbourne, Melbourne, Victoria, Australia
| | - Edouard G. Stanley
- Murdoch Children’s Research Institute, The Royal Children’s Hospital, Melbourne, Victoria, Australia
- Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, Australia
- Department of Paediatrics, University of Melbourne, Melbourne, Victoria, Australia
| | - John M. Haynes
- Monash Institute of Pharmaceutical Sciences, Monash University, Clayton, Victoria, Australia
| | - Colin W. Pouton
- Monash Institute of Pharmaceutical Sciences, Monash University, Clayton, Victoria, Australia
| | - Lachlan H. Thompson
- The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Victoria, Australia
| | - Clare L. Parish
- The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Victoria, Australia
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Bruggeman KF, Rodriguez AL, Parish CL, Williams RJ, Nisbet DR. Temporally controlled release of multiple growth factors from a self-assembling peptide hydrogel. Nanotechnology 2016; 27:385102. [PMID: 27517970 DOI: 10.1088/0957-4484/27/38/385102] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Protein growth factors have demonstrated great potential for tissue repair, but their inherent instability and large size prevents meaningful presentation to biologically protected nervous tissue. Here, we create a nanofibrous network from a self-assembling peptide (SAP) hydrogel to carry and stabilize the growth factors. We significantly reduced growth factor degradation to increase their lifespan by over 40 times. To control the temporal release profile we covalently attached polysaccharide chitosan molecules to the growth factor to increase its interactions with the hydrogel nanofibers and achieved a 4 h delay, demonstrating the potential of this method to provide temporally controlled growth factor delivery. We also describe release rate based analysis to examine the growth factor delivery in more detail than standard cumulative release profiles allow and show that the chitosan attachment method provided a more consistent release profile with a 60% reduction in fluctuations. To prove the potential of this system as a complex growth factor delivery platform we demonstrate for the first time temporally distinct release of multiple growth factors from a single tissue specific SAP hydrogel: a significant goal in regenerative medicine.
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Affiliation(s)
- Kiara F Bruggeman
- Research School of Engineering, The Australian National University, Canberra, ACT 2601, Australia
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Kao T, Labonne T, Niclis JC, Chaurasia R, Lokmic Z, Qian E, Bruveris FF, Howden SE, Motazedian A, Schiesser JV, Costa M, Sourris K, Ng E, Anderson D, Giudice A, Farlie P, Cheung M, Lamande SR, Penington AJ, Parish CL, Thomson LH, Rafii A, Elliott DA, Elefanty AG, Stanley EG. GAPTrap: A Simple Expression System for Pluripotent Stem Cells and Their Derivatives. Stem Cell Reports 2016; 7:518-526. [PMID: 27594589 PMCID: PMC5032031 DOI: 10.1016/j.stemcr.2016.07.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 07/15/2016] [Accepted: 07/16/2016] [Indexed: 01/30/2023] Open
Abstract
The ability to reliably express fluorescent reporters or other genes of interest is important for using human pluripotent stem cells (hPSCs) as a platform for investigating cell fates and gene function. We describe a simple expression system, designated GAPTrap (GT), in which reporter genes, including GFP, mCherry, mTagBFP2, luc2, Gluc, and lacZ are inserted into the GAPDH locus in hPSCs. Independent clones harboring variations of the GT vectors expressed remarkably consistent levels of the reporter gene. Differentiation experiments showed that reporter expression was reliably maintained in hematopoietic cells, cardiac mesoderm, definitive endoderm, and ventral midbrain dopaminergic neurons. Similarly, analysis of teratomas derived from GT-lacZ hPSCs showed that β-galactosidase expression was maintained in a spectrum of cell types representing derivatives of the three germ layers. Thus, the GAPTrap vectors represent a robust and straightforward tagging system that enables indelible labeling of PSCs and their differentiated derivatives. GAPTrap vector system targets transgenes to the ubiquitously expressed GAPDH locus Targeting transgenes to the GAPDH locus yields reliable transgene expression Transgenes at this locus are robustly expressed in differentiated cells Generation of GAPTrap targeted human PSC lines is simple and efficient
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Affiliation(s)
- Tim Kao
- Murdoch Childrens Research Institute, Flemington Road, Parkville, VIC 3052, Australia; Department of Paediatrics, University of Melbourne, Parkville, VIC 3050, Australia
| | - Tanya Labonne
- Murdoch Childrens Research Institute, Flemington Road, Parkville, VIC 3052, Australia
| | - Jonathan C Niclis
- The Florey Institute of Neuroscience and Mental Health, Melbourne University, Parkville, VIC 3052, Australia
| | - Ritu Chaurasia
- Department of Paediatrics, University of Melbourne, Parkville, VIC 3050, Australia
| | - Zerina Lokmic
- Murdoch Childrens Research Institute, Flemington Road, Parkville, VIC 3052, Australia
| | - Elizabeth Qian
- Murdoch Childrens Research Institute, Flemington Road, Parkville, VIC 3052, Australia; Department of Paediatrics, University of Melbourne, Parkville, VIC 3050, Australia
| | - Freya F Bruveris
- Murdoch Childrens Research Institute, Flemington Road, Parkville, VIC 3052, Australia; Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC 3800, Australia
| | - Sara E Howden
- Murdoch Childrens Research Institute, Flemington Road, Parkville, VIC 3052, Australia; Department of Paediatrics, University of Melbourne, Parkville, VIC 3050, Australia
| | - Ali Motazedian
- Murdoch Childrens Research Institute, Flemington Road, Parkville, VIC 3052, Australia; Department of Paediatrics, University of Melbourne, Parkville, VIC 3050, Australia
| | - Jacqueline V Schiesser
- Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC 3800, Australia; Division of Developmental Biology, Cincinnati Children's Hospital Medical Centre, Cincinnati, OH 45229, USA
| | - Magdaline Costa
- Australian Centre for Blood Diseases, Monash University, The Alfred Centre, Melbourne, VIC 3004, Australia
| | - Koula Sourris
- Murdoch Childrens Research Institute, Flemington Road, Parkville, VIC 3052, Australia
| | - Elizabeth Ng
- Murdoch Childrens Research Institute, Flemington Road, Parkville, VIC 3052, Australia
| | - David Anderson
- Murdoch Childrens Research Institute, Flemington Road, Parkville, VIC 3052, Australia
| | - Antonietta Giudice
- Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC 3800, Australia
| | - Peter Farlie
- Murdoch Childrens Research Institute, Flemington Road, Parkville, VIC 3052, Australia; Department of Paediatrics, University of Melbourne, Parkville, VIC 3050, Australia
| | - Michael Cheung
- Murdoch Childrens Research Institute, Flemington Road, Parkville, VIC 3052, Australia; Department of Paediatrics, University of Melbourne, Parkville, VIC 3050, Australia; Department of Cardiology, The Royal Children's Hospital, Parkville, VIC 3052, Australia
| | - Shireen R Lamande
- Murdoch Childrens Research Institute, Flemington Road, Parkville, VIC 3052, Australia; Department of Paediatrics, University of Melbourne, Parkville, VIC 3050, Australia
| | - Anthony J Penington
- Murdoch Childrens Research Institute, Flemington Road, Parkville, VIC 3052, Australia; Department of Paediatrics, University of Melbourne, Parkville, VIC 3050, Australia
| | - Clare L Parish
- The Florey Institute of Neuroscience and Mental Health, Melbourne University, Parkville, VIC 3052, Australia
| | - Lachlan H Thomson
- The Florey Institute of Neuroscience and Mental Health, Melbourne University, Parkville, VIC 3052, Australia
| | - Arash Rafii
- Stem Cell and Microenvironment Laboratory, Weill Cornell Medical College in Qatar, Qatar Foundation, Education City, Doha, Qatar; Department of Genetic Medicine, Weill Cornell Medical College, New York, NY 10065-4896, USA
| | - David A Elliott
- Murdoch Childrens Research Institute, Flemington Road, Parkville, VIC 3052, Australia; School of Biosciences, University of Melbourne, Parkville, VIC 3050, Australia
| | - Andrew G Elefanty
- Murdoch Childrens Research Institute, Flemington Road, Parkville, VIC 3052, Australia; Department of Paediatrics, University of Melbourne, Parkville, VIC 3050, Australia; Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC 3800, Australia.
| | - Edouard G Stanley
- Murdoch Childrens Research Institute, Flemington Road, Parkville, VIC 3052, Australia; Department of Paediatrics, University of Melbourne, Parkville, VIC 3050, Australia; Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC 3800, Australia.
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Wright JL, Ermine CM, Jørgensen JR, Parish CL, Thompson LH. Over-Expression of Meteorin Drives Gliogenesis Following Striatal Injury. Front Cell Neurosci 2016; 10:177. [PMID: 27458346 PMCID: PMC4932119 DOI: 10.3389/fncel.2016.00177] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 06/23/2016] [Indexed: 12/02/2022] Open
Abstract
A number of studies have shown that damage to brain structures adjacent to neurogenic regions can result in migration of new neurons from neurogenic zones into the damaged tissue. The number of differentiated neurons that survive is low, however, and this has led to the idea that the introduction of extrinsic signaling factors, particularly neurotrophic proteins, may augment the neurogenic response to a level that would be therapeutically relevant. Here we report on the impact of the relatively newly described neurotrophic factor, Meteorin, when over-expressed in the striatum following excitotoxic injury. Birth-dating studies using bromo-deoxy-uridine (BrdU) showed that Meteorin did not enhance injury-induced striatal neurogenesis but significantly increased the proportion of new cells with astroglial and oligodendroglial features. As a basis for comparison we found under the same conditions, glial derived neurotrophic factor significantly enhanced neurogenesis but did not effect gliogenesis. The results highlight the specificity of action of different neurotrophic factors in modulating the proliferative response to injury. Meteorin may be an interesting candidate in pathological settings involving damage to white matter, for example after stroke or neonatal brain injury.
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Affiliation(s)
- Jordan L Wright
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC Australia
| | - Charlotte M Ermine
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC Australia
| | | | - Clare L Parish
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC Australia
| | - Lachlan H Thompson
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC Australia
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38
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Maclean FL, Rodriguez AL, Parish CL, Williams RJ, Nisbet DR. Integrating Biomaterials and Stem Cells for Neural Regeneration. Stem Cells Dev 2016; 25:214-26. [DOI: 10.1089/scd.2015.0314] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Affiliation(s)
- Francesca L. Maclean
- Research School of Engineering, the Australian National University, Canberra, Australia
| | | | - Clare L. Parish
- Florey Institute of Neuroscience and Mental Health, the University of Melbourne, Parkville, Australia
| | - Richard J. Williams
- School of Aerospace, Mechanical and Manufacturing Engineering and Health Innovations Research Institute, RMIT University, Melbourne, Australia
| | - David R. Nisbet
- Research School of Engineering, the Australian National University, Canberra, Australia
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39
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Xu X, Jaehne EJ, Greenberg Z, McCarthy P, Saleh E, Parish CL, Camera D, Heng J, Haas M, Baune BT, Ratnayake U, van den Buuse M, Lopez AF, Ramshaw HS, Schwarz Q. 14-3-3ζ deficient mice in the BALB/c background display behavioural and anatomical defects associated with neurodevelopmental disorders. Sci Rep 2015. [PMID: 26207352 PMCID: PMC4513550 DOI: 10.1038/srep12434] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Sequencing and expression analyses implicate 14-3-3ζ as a genetic risk factor for neurodevelopmental disorders such as schizophrenia and autism. In support of this notion, we recently found that 14-3-3ζ−/− mice in the Sv/129 background display schizophrenia-like defects. As epistatic interactions play a significant role in disease pathogenesis we generated a new congenic strain in the BALB/c background to determine the impact of genetic interactions on the 14-3-3ζ−/− phenotype. In addition to replicating defects such as aberrant mossy fibre connectivity and impaired spatial memory, our analysis of 14-3-3ζ−/− BALB/c mice identified enlarged lateral ventricles, reduced synaptic density and ectopically positioned pyramidal neurons in all subfields of the hippocampus. In contrast to our previous analyses, 14-3-3ζ−/− BALB/c mice lacked locomotor hyperactivity that was underscored by normal levels of the dopamine transporter (DAT) and dopamine signalling. Taken together, our results demonstrate that dysfunction of 14-3-3ζ gives rise to many of the pathological hallmarks associated with the human condition. 14-3-3ζ-deficient BALB/c mice therefore provide a novel model to address the underlying biology of structural defects affecting the hippocampus and ventricle, and cognitive defects such as hippocampal-dependent learning and memory.
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Affiliation(s)
- Xiangjun Xu
- Centre for Cancer Biology, SA Pathology and University of South Australia, Frome Road, Adelaide, 5000, Australia
| | - Emily J Jaehne
- Discipline of Psychiatry, University of Adelaide, Adelaide, SA 5005, Australia
| | - Zarina Greenberg
- Centre for Cancer Biology, SA Pathology and University of South Australia, Frome Road, Adelaide, 5000, Australia
| | - Peter McCarthy
- Centre for Cancer Biology, SA Pathology and University of South Australia, Frome Road, Adelaide, 5000, Australia
| | - Eiman Saleh
- Centre for Cancer Biology, SA Pathology and University of South Australia, Frome Road, Adelaide, 5000, Australia
| | - Clare L Parish
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, 3010, Australia
| | - Daria Camera
- School of Medical Sciences, RMIT University, Bundoora, 3083, Australia
| | - Julian Heng
- 1] Harry Perkins Institute of Medical Research, Perth, Australia [2] School of Medicine and Pharmacology, University of Western Australia, Crawley, 6009, Australia
| | - Matilda Haas
- Australian Regenerative Medicine Institute, Monash University, Clayton, Australia
| | - Bernhard T Baune
- Discipline of Psychiatry, University of Adelaide, Adelaide, SA 5005, Australia
| | - Udani Ratnayake
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, 3010, Australia
| | - Maarten van den Buuse
- 1] The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, 3010, Australia [2] Australian Regenerative Medicine Institute, Monash University, Clayton, Australia
| | - Angel F Lopez
- Centre for Cancer Biology, SA Pathology and University of South Australia, Frome Road, Adelaide, 5000, Australia
| | - Hayley S Ramshaw
- Centre for Cancer Biology, SA Pathology and University of South Australia, Frome Road, Adelaide, 5000, Australia
| | - Quenten Schwarz
- Centre for Cancer Biology, SA Pathology and University of South Australia, Frome Road, Adelaide, 5000, Australia
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40
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Somaa FA, Bye CR, Thompson LH, Parish CL. Meningeal cells influence midbrain development and the engraftment of dopamine progenitors in Parkinsonian mice. Exp Neurol 2015; 267:30-41. [PMID: 25708989 DOI: 10.1016/j.expneurol.2015.02.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Revised: 01/30/2015] [Accepted: 02/09/2015] [Indexed: 01/09/2023]
Abstract
Dopaminergic neuroblasts, isolated from ventral midbrain fetal tissue, have been shown to structurally and functionally integrate, and alleviate Parkinsonian symptoms following transplantation. The use of donor tissue isolated at an age younger than conventionally employed can result in larger grafts - a consequence of improved cell survival and neuroblast proliferation at the time of implantation. However studies have paid little attention to removal of the meninges from younger tissue, due to its age-dependent tight attachment to the underlying brain. Beyond the protection of the central nervous system, the meninges act as a signaling center, secreting a variety of trophins to influence neural development and additionally impact on neural repair. However it remains to be elucidated what influence these cells have on ventral midbrain development and grafted dopaminergic neuroblasts. Here we examined the temporal role of meningeal cells in graft integration in Parkinsonian mice and, using in vitro approaches, identified the mechanisms underlying the roles of meningeal cells in midbrain development. We demonstrate that young (embryonic day 10), but not older (E12), meningeal cells promote dopaminergic differentiation as well as neurite growth and guidance within grafts and during development. Furthermore we identify stromal derived factor 1 (SDF1), secreted by the meninges and acting on the CXCR4 receptor present on dopaminergic progenitors, as a contributory mediator in these effects. These findings identify new and important roles for the meningeal cells, and SDF1/CXCR4 signaling, in ventral midbrain development as well as neural repair following cell transplantation into the Parkinsonian brain.
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Affiliation(s)
- Fahad A Somaa
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Christopher R Bye
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Lachlan H Thompson
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Clare L Parish
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia.
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41
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Jiang L, O'Leary C, Kim HA, Parish CL, Massalas J, Waddington JL, Ehrlich ME, Schütz G, Gantois I, Lawrence AJ, Drago J. Motor and behavioral phenotype in conditional mutants with targeted ablation of cortical D1 dopamine receptor-expressing cells. Neurobiol Dis 2015; 76:137-158. [PMID: 25684539 DOI: 10.1016/j.nbd.2015.02.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Revised: 01/14/2015] [Accepted: 02/05/2015] [Indexed: 10/24/2022] Open
Abstract
D1-dopamine receptors (Drd1a) are highly expressed in the deep layers of the cerebral cortex and the striatum. A number of human diseases such as Huntington disease and schizophrenia are known to have cortical pathology involving dopamine receptor expressing neurons. To illuminate their functional role, we exploited a Cre/Lox molecular paradigm to generate Emx-1(tox) MUT mice, a transgenic line in which cortical Drd1a-expressing pyramidal neurons were selectively ablated. Emx-1(tox) MUT mice displayed prominent forelimb dystonia, hyperkinesia, ataxia on rotarod testing, heightened anxiety-like behavior, and age-dependent abnormalities in a test of social interaction. The latter occurred in the context of normal working memory on testing in the Y-maze and for novel object recognition. Some motor and behavioral abnormalities in Emx-1(tox) MUT mice overlapped with those in CamKIIα(tox) MUT transgenic mice, a line in which both striatal and cortical Drd1a-expressing cells were ablated. Although Emx-1(tox) MUT mice had normal striatal anatomy, both Emx-1(tox) MUT and CamKIIα(tox) MUT mice displayed selective neuronal loss in cortical layers V and VI. This study shows that loss of cortical Drd1a-expressing cells is sufficient to produce deficits in multiple motor and behavioral domains, independent of striatal mechanisms. Primary cortical changes in the D1 dopamine receptor compartment are therefore likely to model a number of core clinical features in disorders such as Huntington disease and schizophrenia.
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Affiliation(s)
- Luning Jiang
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Australia; St Vincent's Hospital, Melbourne, Victoria, Australia
| | - Claire O'Leary
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Australia; Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, Dublin 2, Ireland
| | - Hyun Ah Kim
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Australia
| | - Clare L Parish
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Australia
| | - Jim Massalas
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Australia
| | - John L Waddington
- Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, Dublin 2, Ireland
| | - Michelle E Ehrlich
- Department of Neurology, Mount Sinai School of Medicine, New York, NY, USA
| | - Günter Schütz
- Deutsches Krebsforschungszentrum, Heidelberg, Germany
| | - Ilse Gantois
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Australia
| | - Andrew J Lawrence
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Australia
| | - John Drago
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Australia; St Vincent's Hospital, Melbourne, Victoria, Australia.
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Bird MJ, Needham K, Frazier AE, van Rooijen J, Leung J, Hough S, Denham M, Thornton ME, Parish CL, Nayagam BA, Pera M, Thorburn DR, Thompson LH, Dottori M. Functional characterization of Friedreich ataxia iPS-derived neuronal progenitors and their integration in the adult brain. PLoS One 2014; 9:e101718. [PMID: 25000412 PMCID: PMC4084949 DOI: 10.1371/journal.pone.0101718] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Accepted: 06/11/2014] [Indexed: 01/20/2023] Open
Abstract
Friedreich ataxia (FRDA) is an autosomal recessive disease characterised by neurodegeneration and cardiomyopathy that is caused by an insufficiency of the mitochondrial protein, frataxin. Our previous studies described the generation of FRDA induced pluripotent stem cell lines (FA3 and FA4 iPS) that retained genetic characteristics of this disease. Here we extend these studies, showing that neural derivatives of FA iPS cells are able to differentiate into functional neurons, which don't show altered susceptibility to cell death, and have normal mitochondrial function. Furthermore, FA iPS-derived neural progenitors are able to differentiate into functional neurons and integrate in the nervous system when transplanted into the cerebellar regions of host adult rodent brain. These are the first studies to describe both in vitro and in vivo characterization of FA iPS-derived neurons and demonstrate their capacity to survive long term. These findings are highly significant for developing FRDA therapies using patient-derived stem cells.
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Affiliation(s)
- Matthew J. Bird
- Murdoch Childrens Research Institute, Royal Children's Hospital, Melbourne, Victoria, Australia
- Department of Paediatrics, The University of Melbourne, Melbourne, Victoria, Australia
- Centre for Neural Engineering, Department of Electrical and Electronic Engineering, The University of Melbourne, Melbourne, Victoria, Australia
| | - Karina Needham
- Department of Otolaryngology, The University of Melbourne, Melbourne, Victoria, Australia
| | - Ann E. Frazier
- Murdoch Childrens Research Institute, Royal Children's Hospital, Melbourne, Victoria, Australia
- Department of Paediatrics, The University of Melbourne, Melbourne, Victoria, Australia
| | - Jorien van Rooijen
- Department of Anatomy and Neuroscience, The University of Melbourne, Melbourne, Victoria, Australia
| | - Jessie Leung
- Department of Anatomy and Neuroscience, The University of Melbourne, Melbourne, Victoria, Australia
| | - Shelley Hough
- Department of Anatomy and Neuroscience, The University of Melbourne, Melbourne, Victoria, Australia
| | - Mark Denham
- Department of Anatomy and Neuroscience, The University of Melbourne, Melbourne, Victoria, Australia
| | - Matthew E. Thornton
- Division of Maternal Fetal Medicine, Saban Research Institute of Children's Hospital of Los Angeles, Los Angeles, California, United States of America
| | - Clare L. Parish
- Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, Victoria, Australia
| | - Bryony A. Nayagam
- Department of Audiology and Speech Pathology, The University of Melbourne, Melbourne, Victoria, Australia
| | - Martin Pera
- Department of Anatomy and Neuroscience, The University of Melbourne, Melbourne, Victoria, Australia
- Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, Victoria, Australia
- Walter and Eliza Hall Institute, Melbourne, Victoria, Australia
| | - David R. Thorburn
- Murdoch Childrens Research Institute, Royal Children's Hospital, Melbourne, Victoria, Australia
- Department of Paediatrics, The University of Melbourne, Melbourne, Victoria, Australia
- Victorian Clinical Genetics Services, Royal Children's Hospital, Melbourne, Victoria, Australia
| | - Lachlan H. Thompson
- Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, Victoria, Australia
| | - Mirella Dottori
- Centre for Neural Engineering, Department of Electrical and Electronic Engineering, The University of Melbourne, Melbourne, Victoria, Australia
- Department of Anatomy and Neuroscience, The University of Melbourne, Melbourne, Victoria, Australia
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43
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Fernando CV, Kele J, Bye CR, Niclis JC, Alsanie W, Blakely BD, Stenman J, Turner BJ, Parish CL. Diverse roles for Wnt7a in ventral midbrain neurogenesis and dopaminergic axon morphogenesis. Stem Cells Dev 2014; 23:1991-2003. [PMID: 24803261 DOI: 10.1089/scd.2014.0166] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
During development of the central nervous system, trophic, together with genetic, cues dictate the balance between cellular proliferation and differentiation. Subsequent to the birth of new neurons, additional intrinsic and extrinsic signals regulate the connectivity of these cells. While a number of regulators of ventral midbrain (VM) neurogenesis and dopaminergic (DA) axon guidance are known, we identify a number of novel roles for the secreted glycoprotein, Wnt7a, in this context. We demonstrate a temporal and spatial expression of Wnt7a in the VM, indicative of roles in neurogenesis, differentiation, and axonal growth and guidance. In primary VM cultures, and validated in Wnt7a-deficient mice, we show that the early expression within the VM is important for regulating VM progenitor proliferation, cell cycle progression, and cell survival, thereby dictating the number of midbrain Nurr1 precursors and DA neurons. During early development of the midbrain DA pathways, Wnt7a promotes axonal elongation and repels DA neurites out of the midbrain. Later, Wnt7a expression in the VM midline suggests a role in preventing axonal crossing while expression in regions flanking the medial forebrain bundle (thalamus and hypothalamus) ensured appropriate trajectory of DA axons en route to their forebrain targets. We show that the effects of Wnt7a in VM development are mediated, at least in part, by the β-catenin/canonical pathways. Together, these findings identify Wnt7a as a new regulator of VM neurogenesis and DA axon growth and guidance.
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Affiliation(s)
- Chathurini V Fernando
- 1 The Florey Institute of Neuroscience and Mental Health, The University of Melbourne , Parkville, Australia
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Lau CL, Kovacevic M, Tingleff TS, Forsythe JS, Cate HS, Merlo D, Cederfur C, Maclean FL, Parish CL, Horne MK, Nisbet DR, Beart PM. 3D Electrospun scaffolds promote a cytotrophic phenotype of cultured primary astrocytes. J Neurochem 2014; 130:215-26. [PMID: 24588462 DOI: 10.1111/jnc.12702] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 02/24/2014] [Accepted: 02/26/2014] [Indexed: 12/01/2022]
Abstract
Astrocytes are a target for regenerative neurobiology because in brain injury their phenotype arbitrates brain integrity, neuronal death and subsequent repair and reconstruction. We explored the ability of 3D scaffolds to direct astrocytes into phenotypes with the potential to support neuronal survival. Poly-ε-caprolactone scaffolds were electrospun with random and aligned fibre orientations on which murine astrocytes were sub-cultured and analysed at 4 and 12 DIV. Astrocytes survived, proliferated and migrated into scaffolds adopting 3D morphologies, mimicking in vivo stellated phenotypes. Cells on random poly-ε-caprolactone scaffolds grew as circular colonies extending processes deep within sub-micron fibres, whereas astrocytes on aligned scaffolds exhibited rectangular colonies with processes following not only the direction of fibre alignment but also penetrating the scaffold. Cell viability was maintained over 12 DIV, and cytochemistry for F-/G-actin showed fewer stress fibres on bioscaffolds relative to 2D astrocytes. Reduced cytoskeletal stress was confirmed by the decreased expression of glial fibrillary acidic protein. PCR demonstrated up-regulation of genes (excitatory amino acid transporter 2, brain-derived neurotrophic factor and anti-oxidant) reflecting healthy biologies of mature astrocytes in our extended culture protocol. This study illustrates the therapeutic potential of bioengineering strategies using 3D electrospun scaffolds which direct astrocytes into phenotypes supporting brain repair. Astrocytes exist in phenotypes with pro-survival and destructive components, and their biology can be modulated by changing phenotype. Our findings demonstrate murine astrocytes adopt a healthy phenotype when cultured in 3D. Astrocytes proliferate and extend into poly-ε-caprolactone scaffolds displaying 3D stellated morphologies with reduced GFAP expression and actin stress fibres, plus a cytotrophic gene profile. Bioengineered 3D scaffolds have potential to direct inflammation to aid regenerative neurobiology.
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Affiliation(s)
- Chew L Lau
- Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Australia
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Wang TY, Bruggeman KAF, Sheean RK, Turner BJ, Nisbet DR, Parish CL. Characterization of the stability and bio-functionality of tethered proteins on bioengineered scaffolds: implications for stem cell biology and tissue repair. J Biol Chem 2014; 289:15044-51. [PMID: 24700461 DOI: 10.1074/jbc.m113.537381] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Various engineering applications have been utilized to deliver molecules and compounds in both innate and biological settings. In the context of biological applications, the timely delivery of molecules can be critical for cellular and organ function. As such, previous studies have demonstrated the superiority of long-term protein delivery, by way of protein tethering onto bioengineered scaffolds, compared with conventional delivery of soluble protein in vitro and in vivo. Despite such benefits little knowledge exists regarding the stability, release kinetics, longevity, activation of intracellular pathway, and functionality of these proteins over time. By way of example, here we examined the stability, degradation and functionality of a protein, glial-derived neurotrophic factor (GDNF), which is known to influence neuronal survival, differentiation, and neurite morphogenesis. Enzyme-linked immunosorbent assays (ELISA) revealed that GDNF, covalently tethered onto polycaprolactone (PCL) electrospun nanofibrous scaffolds, remained present on the scaffold surface for 120 days, with no evidence of protein leaching or degradation. The tethered GDNF protein remained functional and capable of activating downstream signaling cascades, as revealed by its capacity to phosphorylate intracellular Erk in a neural cell line. Furthermore, immobilization of GDNF protein promoted cell survival and differentiation in culture at both 3 and 7 days, further validating prolonged functionality of the protein, well beyond the minutes to hours timeframe observed for soluble proteins under the same culture conditions. This study provides important evidence of the stability and functionality kinetics of tethered molecules.
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Affiliation(s)
- Ting-Yi Wang
- From the Florey Institute of Neuroscience & Mental Health, The University of Melbourne, Parkville, Australia, 3010 and
| | - Kiara A F Bruggeman
- the Research School of Engineering, The Australian National University, Canberra, Australia, 0200
| | - Rebecca K Sheean
- From the Florey Institute of Neuroscience & Mental Health, The University of Melbourne, Parkville, Australia, 3010 and
| | - Bradley J Turner
- From the Florey Institute of Neuroscience & Mental Health, The University of Melbourne, Parkville, Australia, 3010 and
| | - David R Nisbet
- the Research School of Engineering, The Australian National University, Canberra, Australia, 0200
| | - Clare L Parish
- From the Florey Institute of Neuroscience & Mental Health, The University of Melbourne, Parkville, Australia, 3010 and
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Affiliation(s)
- Clare L Parish
- Florey Institute of Neuroscience and Mental Health, The University of Melbourne Parkville, VIC, Australia
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Kim HA, Jiang L, Madsen H, Parish CL, Massalas J, Smardencas A, O'Leary C, Gantois I, O'Tuathaigh C, Waddington JL, Ehrlich ME, Lawrence AJ, Drago J. Resolving pathobiological mechanisms relating to Huntington disease: gait, balance, and involuntary movements in mice with targeted ablation of striatal D1 dopamine receptor cells. Neurobiol Dis 2013; 62:323-37. [PMID: 24135007 DOI: 10.1016/j.nbd.2013.09.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2013] [Revised: 08/13/2013] [Accepted: 09/14/2013] [Indexed: 12/01/2022] Open
Abstract
Progressive cell loss is observed in the striatum, cerebral cortex, thalamus, hypothalamus, subthalamic nucleus and hippocampus in Huntington disease. In the striatum, dopamine-responsive medium spiny neurons are preferentially lost. Clinical features include involuntary movements, gait and orofacial impairments in addition to cognitive deficits and psychosis, anxiety and mood disorders. We utilized the Cre-LoxP system to generate mutant mice with selective postnatal ablation of D1 dopamine receptor-expressing striatal neurons to determine which elements of the complex Huntington disease phenotype relate to loss of this neuronal subpopulation. Mutant mice had reduced body weight, locomotor slowing, reduced rearing, ataxia, a short stride length wide-based erratic gait, impairment in orofacial movements and displayed haloperidol-suppressible tic-like movements. The mutation was associated with an anxiolytic profile. Mutant mice had significant striatal-specific atrophy and astrogliosis. D1-expressing cell number was reduced throughout the rostrocaudal extent of the dorsal striatum consistent with partial destruction of the striatonigral pathway. Additional striatal changes included up-regulated D2 and enkephalin mRNA, and an increased density of D2 and preproenkephalin-expressing projection neurons, and striatal neuropeptide Y and cholinergic interneurons. These data suggest that striatal D1-cell-ablation alone may account for the involuntary movements and locomotor, balance and orofacial deficits seen not only in HD but also in HD phenocopy syndromes with striatal atrophy. Therapeutic strategies would therefore need to target striatal D1 cells to ameliorate deficits especially when the clinical presentation is dominated by a bradykinetic/ataxic phenotype with involuntary movements.
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Affiliation(s)
- Hyun Ah Kim
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Australia
| | - Luning Jiang
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Australia
| | - Heather Madsen
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Australia
| | - Clare L Parish
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Australia
| | - Jim Massalas
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Australia
| | - Arthur Smardencas
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Australia
| | - Claire O'Leary
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Australia; Molecular and Cellular Therapeutics, RCSI Research Institute, Royal College of Surgeons in Ireland, Dublin 2, Ireland
| | - Ilse Gantois
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Australia
| | - Colm O'Tuathaigh
- Molecular and Cellular Therapeutics, RCSI Research Institute, Royal College of Surgeons in Ireland, Dublin 2, Ireland
| | - John L Waddington
- Molecular and Cellular Therapeutics, RCSI Research Institute, Royal College of Surgeons in Ireland, Dublin 2, Ireland
| | - Michelle E Ehrlich
- Department of Neurology, Mount Sinai School of Medicine, New York, NY, USA
| | - Andrew J Lawrence
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Australia
| | - John Drago
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Australia.
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Halford MM, Macheda ML, Parish CL, Takano EA, Fox S, Layton D, Nice E, Stacker SA. A fully human inhibitory monoclonal antibody to the Wnt receptor RYK. PLoS One 2013; 8:e75447. [PMID: 24058687 PMCID: PMC3776778 DOI: 10.1371/journal.pone.0075447] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Accepted: 08/18/2013] [Indexed: 11/19/2022] Open
Abstract
RYK is an unusual member of the receptor tyrosine kinase (RTK) family that is classified as a putative pseudokinase. RYK regulates fundamental biological processes including cell differentiation, migration and target selection, axon outgrowth and pathfinding by transducing signals across the plasma membrane in response to the high affinity binding of Wnt family ligands to its extracellular Wnt inhibitory factor (WIF) domain. Here we report the generation and initial characterization of a fully human inhibitory monoclonal antibody to the human RYK WIF domain. From a naïve human single chain fragment variable (scFv) phage display library, we identified anti-RYK WIF domain–specific scFvs then screened for those that could compete with Wnt3a for binding. Production of a fully human IgG1κ from an inhibitory scFv yielded a monoclonal antibody that inhibits Wnt5a-responsive RYK function in a neurite outgrowth assay. This antibody will have immediate applications for modulating RYK function in a range of settings including development and adult homeostasis, with significant potential for therapeutic use in human pathologies.
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Affiliation(s)
- Michael M. Halford
- Tumour Angiogenesis Program, Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia
- Angiogenesis Laboratory, Ludwig Institute for Cancer Research, Royal Melbourne Hospital, Parkville, Victoria, Australia
| | - Maria L. Macheda
- Tumour Angiogenesis Program, Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia
- Angiogenesis Laboratory, Ludwig Institute for Cancer Research, Royal Melbourne Hospital, Parkville, Victoria, Australia
| | - Clare L. Parish
- Florey Neuroscience Institutes, Melbourne Brain Centre, The University of Melbourne, Parkville, Victoria, Australia
| | - Elena A. Takano
- Tumour Angiogenesis Program, Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia
| | - Stephen Fox
- Tumour Angiogenesis Program, Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria, Australia
| | - Daniel Layton
- Monash Antibody Technologies Facility, Monash University, Clayton, Victoria, Australia
| | - Edouard Nice
- Monash Antibody Technologies Facility, Monash University, Clayton, Victoria, Australia
| | - Steven A. Stacker
- Tumour Angiogenesis Program, Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia
- Angiogenesis Laboratory, Ludwig Institute for Cancer Research, Royal Melbourne Hospital, Parkville, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria, Australia
- * E-mail:
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Blakely BD, Bye CR, Fernando CV, Prasad AA, Pasterkamp RJ, Macheda ML, Stacker SA, Parish CL. Ryk, a receptor regulating Wnt5a-mediated neurogenesis and axon morphogenesis of ventral midbrain dopaminergic neurons. Stem Cells Dev 2013; 22:2132-44. [PMID: 23517308 DOI: 10.1089/scd.2013.0066] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Ryk is an atypical transmembrane receptor tyrosine kinase that has been shown to play multiple roles in development through the modulation of Wnt signaling. Within the developing ventral midbrain (VM), Wnts have been shown to contribute to the proliferation, differentiation, and connectivity of dopamine (DA) neurons; however, the Wnt-related receptors regulating these events remain less well described. In light of the established roles of Wnt5a in dopaminergic development (regulating DA differentiation as well as axonal growth and repulsion), and its interaction with Ryk elsewhere within the central nervous system, we investigated the potential role of Ryk in VM development. Here we show temporal and spatial expression of Ryk within the VM, suggestive of a role in DA neurogenesis and axonal plasticity. In VM primary cultures, we show that the effects of Wnt5a on VM progenitor proliferation, DA differentiation, and DA axonal connectivity can be inhibited using an Ryk-blocking antibody. In support, Ryk knockout mice showed reduced VM progenitors and DA precursor populations, resulting in a significant decrease in DA cells. However, Ryk(-/-) mice displayed no defects in DA axonal growth, guidance, or fasciculation of the MFB, suggesting other receptors may be involved and/or compensate for the loss of this receptor. These findings identify for the first time Ryk as an important receptor for midbrain DA development.
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Affiliation(s)
- Brette D Blakely
- Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Australia
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Kauhausen J, Thompson LH, Parish CL. Cell intrinsic and extrinsic factors contribute to enhance neural circuit reconstruction following transplantation in Parkinsonian mice. J Physiol 2012; 591:77-91. [PMID: 23045338 DOI: 10.1113/jphysiol.2012.243063] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Cell replacement therapy for Parkinson's disease has predominantly focused on ectopic transplantation of fetal dopamine (DA) neurons into the striatum as a means to restore neurotransmission, rather than homotopic grafts into the site of cell loss, which would require extensive axonal growth. However, ectopic grafts fail to restore important aspects of DA circuitry necessary for controlled basal ganglia output, and this may underlie the suboptimal and variable functional outcomes in patients. We recently showed that DA neurons in homotopic allografts of embryonic ventral mesencephalon (VM) can send long axonal projections along the nigrostriatal pathway in order to innervate forebrain targets, although the extent of striatal reinnervation remains substantially less than can be achieved with ectopic placement directly into the striatal target. Here, we examined the possible benefits of using younger VM donor tissue and over-expression of glial cell-derived neurotrophic factor (GDNF) in the striatal target to improve the degree of striatal innervation from homotopic grafts. Younger donor tissue, collected on embryonic day (E)10, generated 4-fold larger grafts with greater striatal targeting, compared to grafts generated from more conventional E12 donor VM. Over-expression of GDNF in the host brain also significantly increased DA axonal growth and striatal innervation. Furthermore, a notable increase in the number and proportion of A9 DA neurons, essential for functional recovery, was observed in younger donor grafts treated with GDNF. Behavioural testing confirmed functional integration of younger donor tissue and demonstrated that improved motor function could be attributed to both local midbrain and striatal innervation. Together, these findings suggest there is significant scope for further development of intra-nigral grafting as a restorative approach for Parkinson's disease.
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Affiliation(s)
- Jessica Kauhausen
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria 3010, Australia
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