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Weible MW, Lovelace MD, Mundell HD, Pang TWR, Chan-Ling T. BMPRII + neural precursor cells isolated and characterized from organotypic neurospheres: an in vitro model of human fetal spinal cord development. Neural Regen Res 2024; 19:447-457. [PMID: 37488910 PMCID: PMC10503628 DOI: 10.4103/1673-5374.373669] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 11/12/2022] [Accepted: 03/06/2023] [Indexed: 07/26/2023] Open
Abstract
Roof plate secretion of bone morphogenetic proteins (BMPs) directs the cellular fate of sensory neurons during spinal cord development, including the formation of the ascending sensory columns, though their biology is not well understood. Type-II BMP receptor (BMPRII), the cognate receptor, is expressed by neural precursor cells during embryogenesis; however, an in vitro method of enriching BMPRII+ human neural precursor cells (hNPCs) from the fetal spinal cord is absent. Immunofluorescence was undertaken on intact second-trimester human fetal spinal cord using antibodies to BMPRII and leukemia inhibitory factor (LIF). Regions of highest BMPRII+ immunofluorescence localized to sensory columns. Parenchymal and meningeal-associated BMPRII+ vascular cells were identified in both intact fetal spinal cord and cortex by co-positivity with vascular lineage markers, CD34/CD39. LIF immunostaining identified a population of somas concentrated in dorsal and ventral horn interneurons, mirroring the expression of LIF receptor/CD118. A combination of LIF supplementation and high-density culture maintained culture growth beyond 10 passages, while synergistically increasing the proportion of neurospheres with a stratified, cytoarchitecture. These neurospheres were characterized by BMPRII+/MAP2ab+/-/βIII-tubulin+/nestin-/vimentin-/GFAP-/NeuN- surface hNPCs surrounding a heterogeneous core of βIII-tubulin+/nestin+/vimentin+/GFAP+/MAP2ab-/NeuN- multipotent precursors. Dissociated cultures from tripotential neurospheres contained neuronal (βIII-tubulin+), astrocytic (GFAP+), and oligodendrocytic (O4+) lineage cells. Fluorescence-activated cell sorting-sorted BMPRII+ hNPCs were MAP2ab+/-/βIII-tubulin+/GFAP-/O4- in culture. This is the first isolation of BMPRII+ hNPCs identified and characterized in human fetal spinal cords. Our data show that LIF combines synergistically with high-density reaggregate cultures to support the organotypic reorganization of neurospheres, characterized by surface BMPRII+ hNPCs. Our study has provided a new methodology for an in vitro model capable of amplifying human fetal spinal cord cell numbers for > 10 passages. Investigations of the role BMPRII plays in spinal cord development have primarily relied upon mouse and rat models, with interpolations to human development being derived through inference. Because of significant species differences between murine biology and human, including anatomical dissimilarities in central nervous system (CNS) structure, the findings made in murine models cannot be presumed to apply to human spinal cord development. For these reasons, our human in vitro model offers a novel tool to better understand neurodevelopmental pathways, including BMP signaling, as well as spinal cord injury research and testing drug therapies.
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Affiliation(s)
- Michael W. Weible
- Bosch Institute, Discipline of Anatomy and Histology (F13), University of Sydney, Sydney, NSW, Australia
- School of Environment and Science, Griffith University, Nathan, QLD, Australia
| | - Michael D. Lovelace
- Bosch Institute, Discipline of Anatomy and Histology (F13), University of Sydney, Sydney, NSW, Australia
- Discipline of Medicine, Nepean Clinical School, Faculty of Medicine and Health, University of Sydney, Kingswood, NSW, Australia
| | - Hamish D. Mundell
- Bosch Institute, Discipline of Anatomy and Histology (F13), University of Sydney, Sydney, NSW, Australia
- New South Wales Brain Tissue Resource Centre, School of Medical Sciences, Faculty of Medicine and Health, University of Sydney, Charles Perkins Centre (D17), Sydney, NSW, Australia
| | - Tsz Wai Rosita Pang
- Bosch Institute, Discipline of Anatomy and Histology (F13), University of Sydney, Sydney, NSW, Australia
| | - Tailoi Chan-Ling
- Bosch Institute, Discipline of Anatomy and Histology (F13), University of Sydney, Sydney, NSW, Australia
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2
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Slika H, Karimov Z, Alimonti P, Abou-Mrad T, De Fazio E, Alomari S, Tyler B. Preclinical Models and Technologies in Glioblastoma Research: Evolution, Current State, and Future Avenues. Int J Mol Sci 2023; 24:16316. [PMID: 38003507 PMCID: PMC10671665 DOI: 10.3390/ijms242216316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 11/07/2023] [Accepted: 11/09/2023] [Indexed: 11/26/2023] Open
Abstract
Glioblastoma is the most common malignant primary central nervous system tumor and one of the most debilitating cancers. The prognosis of patients with glioblastoma remains poor, and the management of this tumor, both in its primary and recurrent forms, remains suboptimal. Despite the tremendous efforts that are being put forward by the research community to discover novel efficacious therapeutic agents and modalities, no major paradigm shifts have been established in the field in the last decade. However, this does not mirror the abundance of relevant findings and discoveries made in preclinical glioblastoma research. Hence, developing and utilizing appropriate preclinical models that faithfully recapitulate the characteristics and behavior of human glioblastoma is of utmost importance. Herein, we offer a holistic picture of the evolution of preclinical models of glioblastoma. We further elaborate on the commonly used in vitro and vivo models, delving into their development, favorable characteristics, shortcomings, and areas of potential improvement, which aids researchers in designing future experiments and utilizing the most suitable models. Additionally, this review explores progress in the fields of humanized and immunotolerant mouse models, genetically engineered animal models, 3D in vitro models, and microfluidics and highlights promising avenues for the future of preclinical glioblastoma research.
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Affiliation(s)
- Hasan Slika
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (H.S.); (Z.K.); (S.A.)
| | - Ziya Karimov
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (H.S.); (Z.K.); (S.A.)
- Faculty of Medicine, Ege University, 35100 Izmir, Turkey
| | - Paolo Alimonti
- School of Medicine, Vita-Salute San Raffaele University, 20132 Milan, Italy; (P.A.); (E.D.F.)
| | - Tatiana Abou-Mrad
- Faculty of Medicine, American University of Beirut, Beirut P.O. Box 11-0236, Lebanon;
- Department of Neurosurgery, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Emerson De Fazio
- School of Medicine, Vita-Salute San Raffaele University, 20132 Milan, Italy; (P.A.); (E.D.F.)
| | - Safwan Alomari
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (H.S.); (Z.K.); (S.A.)
| | - Betty Tyler
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (H.S.); (Z.K.); (S.A.)
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Lu B, Avalos P, Svendsen S, Zhang C, Nocito L, Jones MK, Pieplow C, Saylor J, Ghiam S, Block A, Fernandez M, Ljubimov AV, Small K, Liao D, Svendsen CN, Wang S. GMP-grade human neural progenitors delivered subretinally protect vision in rat model of retinal degeneration and survive in minipigs. J Transl Med 2023; 21:650. [PMID: 37743503 PMCID: PMC10519102 DOI: 10.1186/s12967-023-04501-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 09/02/2023] [Indexed: 09/26/2023] Open
Abstract
BACKGROUND Stem cell products are increasingly entering early stage clinical trials for treating retinal degeneration. The field is learning from experience about comparability of cells proposed for preclinical and clinical use. Without this, preclinical data supporting translation to a clinical study might not adequately reflect the performance of subsequent clinical-grade cells in patients. METHODS Research-grade human neural progenitor cells (hNPC) and clinical-grade hNPC (termed CNS10-NPC) were injected into the subretinal space of the Royal College of Surgeons (RCS) rat, a rodent model of retinal degeneration such as retinitis pigmentosa. An investigational new drug (IND)-enabling study with CNS10-NPC was performed in the same rodent model. Finally, surgical methodology for subretinal cell delivery in the clinic was optimized in a large animal model with Yucatan minipigs. RESULTS Both research-grade hNPC and clinical-grade hNPC can survive and provide functional and morphological protection in a dose-dependent fashion in RCS rats and the optimal cell dose was defined and used in IND-enabling studies. Grafted CNS10-NPC migrated from the injection site without differentiation into retinal cell phenotypes. Additionally, CNS10-NPC showed long-term survival, safety and efficacy in a good laboratory practice (GLP) toxicity and tumorigenicity study, with no observed cell overgrowth even at the maximum deliverable dose. Finally, using a large animal model with the Yucatan minipig, which has an eye size comparable to the human, we optimized the surgical methodology for subretinal cell delivery in the clinic. CONCLUSIONS These extensive studies supported an approved IND and the translation of CNS10-NPC to an ongoing Phase 1/2a clinical trial (NCT04284293) for the treatment of retinitis pigmentosa.
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Affiliation(s)
- Bin Lu
- Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Pablo Avalos
- Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Soshana Svendsen
- Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Changqing Zhang
- Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Laura Nocito
- Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Melissa K Jones
- Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Cosmo Pieplow
- Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Joshua Saylor
- Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Sean Ghiam
- Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Amanda Block
- Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Michael Fernandez
- Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Alexander V Ljubimov
- Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
- David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, 90095, USA
| | - Kent Small
- Macula& Retina Institute, Glendale, CA, 91203, USA
| | - David Liao
- Retina Vitreous Associates Medical Group, Beverly Hills, CA, 90211, USA
| | - Clive N Svendsen
- Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA.
- David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, 90095, USA.
| | - Shaomei Wang
- Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA.
- David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, 90095, USA.
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4
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Laperle AH, Moser VA, Avalos P, Lu B, Wu A, Fulton A, Ramirez S, Garcia VJ, Bell S, Ho R, Lawless G, Roxas K, Shahin S, Shelest O, Svendsen S, Wang S, Svendsen CN. Human iPSC-derived neural progenitor cells secreting GDNF provide protection in rodent models of ALS and retinal degeneration. Stem Cell Reports 2023; 18:1629-1642. [PMID: 37084724 PMCID: PMC10444557 DOI: 10.1016/j.stemcr.2023.03.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 03/24/2023] [Accepted: 03/27/2023] [Indexed: 04/23/2023] Open
Abstract
Human induced pluripotent stem cells (iPSCs) are a renewable cell source that can be differentiated into neural progenitor cells (iNPCs) and transduced with glial cell line-derived neurotrophic factor (iNPC-GDNFs). The goal of the current study is to characterize iNPC-GDNFs and test their therapeutic potential and safety. Single-nuclei RNA-seq show iNPC-GDNFs express NPC markers. iNPC-GDNFs delivered into the subretinal space of the Royal College of Surgeons rodent model of retinal degeneration preserve photoreceptors and visual function. Additionally, iNPC-GDNF transplants in the spinal cord of SOD1G93A amyotrophic lateral sclerosis (ALS) rats preserve motor neurons. Finally, iNPC-GDNF transplants in the spinal cord of athymic nude rats survive and produce GDNF for 9 months, with no signs of tumor formation or continual cell proliferation. iNPC-GDNFs survive long-term, are safe, and provide neuroprotection in models of both retinal degeneration and ALS, indicating their potential as a combined cell and gene therapy for various neurodegenerative diseases.
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Affiliation(s)
- Alexander H Laperle
- Cedars-Sinai Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - V Alexandra Moser
- Cedars-Sinai Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Pablo Avalos
- Cedars-Sinai Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Bin Lu
- Cedars-Sinai Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Amanda Wu
- Cedars-Sinai Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Aaron Fulton
- Cedars-Sinai Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Stephany Ramirez
- Cedars-Sinai Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Veronica J Garcia
- Cedars-Sinai Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Shaughn Bell
- Cedars-Sinai Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Ritchie Ho
- Cedars-Sinai Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - George Lawless
- Cedars-Sinai Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Kristina Roxas
- Cedars-Sinai Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Saba Shahin
- Cedars-Sinai Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Oksana Shelest
- Cedars-Sinai Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Soshana Svendsen
- Cedars-Sinai Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Shaomei Wang
- Cedars-Sinai Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA.
| | - Clive N Svendsen
- Cedars-Sinai Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA.
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5
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Azevedo-Pereira RL, Manley NC, Dong C, Zhang Y, Lee AG, Zatulovskaia Y, Gupta V, Vu J, Han S, Berry JE, Bliss TM, Steinberg GK. Decoding the molecular crosstalk between grafted stem cells and the stroke-injured brain. Cell Rep 2023; 42:112353. [PMID: 37043353 PMCID: PMC10562513 DOI: 10.1016/j.celrep.2023.112353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 01/25/2023] [Accepted: 03/21/2023] [Indexed: 04/13/2023] Open
Abstract
Stem cell therapy shows promise for multiple disorders; however, the molecular crosstalk between grafted cells and host tissue is largely unknown. Here, we take a step toward addressing this question. Using translating ribosome affinity purification (TRAP) with sequencing tools, we simultaneously decode the transcriptomes of graft and host for human neural stem cells (hNSCs) transplanted into the stroke-injured rat brain. Employing pathway analysis tools, we investigate the interactions between the two transcriptomes to predict molecular pathways linking host and graft genes; as proof of concept, we predict host-secreted factors that signal to the graft and the downstream molecular cascades they trigger in the graft. We identify a potential host-graft crosstalk pathway where BMP6 from the stroke-injured brain induces graft secretion of noggin, a known brain repair factor. Decoding the molecular interplay between graft and host is a critical step toward deciphering the molecular mechanisms of stem cell action.
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Affiliation(s)
| | - Nathan C Manley
- Department of Neurosurgery, Stanford University, Stanford, CA 94305, USA
| | - Chen Dong
- Department of Neurosurgery, Stanford University, Stanford, CA 94305, USA
| | - Yue Zhang
- Stanford Genetics Bioinformatics Service Center, Stanford University, Stanford, CA 94305, USA
| | - Alex G Lee
- Division of Hematology and Oncology, Department of Pediatrics, University of California, San Francisco, CA 94143, USA
| | - Yulia Zatulovskaia
- Department of Neurosurgery, Stanford University, Stanford, CA 94305, USA
| | - Varun Gupta
- Department of Neurosurgery, Stanford University, Stanford, CA 94305, USA
| | - Jennifer Vu
- Department of Neurosurgery, Stanford University, Stanford, CA 94305, USA
| | - Summer Han
- Department of Neurosurgery, Stanford University, Stanford, CA 94305, USA
| | - Jack E Berry
- Department of Neurosurgery, Stanford University, Stanford, CA 94305, USA
| | - Tonya M Bliss
- Department of Neurosurgery, Stanford University, Stanford, CA 94305, USA.
| | - Gary K Steinberg
- Department of Neurosurgery, Stanford University, Stanford, CA 94305, USA.
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Radoszkiewicz K, Hribljan V, Isakovic J, Mitrecic D, Sarnowska A. Critical points for optimizing long-term culture and neural differentiation capacity of rodent and human neural stem cells to facilitate translation into clinical settings. Exp Neurol 2023; 363:114353. [PMID: 36841464 DOI: 10.1016/j.expneurol.2023.114353] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 02/03/2023] [Accepted: 02/18/2023] [Indexed: 02/27/2023]
Abstract
Despite several decades of research on the nature and functional properties of neural stem cells, which brought great advances in regenerative medicine, there is still a plethora of ambiguous protocols and interpretations linked to their applications. Here, we present a whole spectrum of protocol elements that should be standardized in order to obtain viable cell cultures and facilitate their translation into clinical settings. Additionally, this review also presents outstanding limitations and possible problems to be encountered when dealing with protocol optimization. Most importantly, we also outline the critical points that should be considered before starting any experiments utilizing neural stem cells or interpreting their results.
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Affiliation(s)
- Klaudia Radoszkiewicz
- Translational Platform for Regenerative Medicine, Mossakowski Medical Research Institute, Polish Academy of Sciences, Pawinskiego 5 Street, 02-106 Warsaw, Poland
| | - Valentina Hribljan
- Laboratory for Stem Cells, Croatian Institute for Brain Research, University of Zagreb School of Medicine, Šalata 12, Zagreb, Croatia
| | - Jasmina Isakovic
- Omnion Research International Ltd, Heinzelova 4, 10000 Zagreb, Croatia
| | - Dinko Mitrecic
- Laboratory for Stem Cells, Croatian Institute for Brain Research, University of Zagreb School of Medicine, Šalata 12, Zagreb, Croatia
| | - Anna Sarnowska
- Translational Platform for Regenerative Medicine, Mossakowski Medical Research Institute, Polish Academy of Sciences, Pawinskiego 5 Street, 02-106 Warsaw, Poland.
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Nistor-Cseppentö DC, Jurcău MC, Jurcău A, Andronie-Cioară FL, Marcu F. Stem Cell- and Cell-Based Therapies for Ischemic Stroke. Bioengineering (Basel) 2022; 9:717. [PMID: 36421118 PMCID: PMC9687728 DOI: 10.3390/bioengineering9110717] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/14/2022] [Accepted: 11/18/2022] [Indexed: 09/12/2023] Open
Abstract
Stroke is the second cause of disability worldwide as it is expected to increase its incidence and prevalence. Despite efforts to increase the number of patients eligible for recanalization therapies, a significant proportion of stroke survivors remain permanently disabled. This outcome boosted the search for efficient neurorestorative methods. Stem cells act through multiple pathways: cell replacement, the secretion of growth factors, promoting endogenous reparative pathways, angiogenesis, and the modulation of neuroinflammation. Although neural stem cells are difficult to obtain, pose a series of ethical issues, and require intracerebral delivery, mesenchymal stem cells are less immunogenic, are easy to obtain, and can be transplanted via intravenous, intra-arterial, or intranasal routes. Extracellular vesicles and exosomes have similar actions and are easier to obtain, also allowing for engineering to deliver specific molecules or RNAs and to promote the desired effects. Appropriate timing, dosing, and delivery protocols must be established, and the possibility of tumorigenesis must be settled. Nonetheless, stem cell- and cell-based therapies for stroke have already entered clinical trials. Although safe, the evidence for efficacy is less impressive so far. Hopefully, the STEP guidelines and the SPAN program will improve the success rate. As such, stem cell- and cell-based therapy for ischemic stroke holds great promise.
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Affiliation(s)
- Delia Carmen Nistor-Cseppentö
- Department of Psycho-Neurosciences and Rehabilitation, Faculty of Medicine and Pharmacy, University of Oradea, 410087 Oradea, Romania
| | | | - Anamaria Jurcău
- Department of Psycho-Neurosciences and Rehabilitation, Faculty of Medicine and Pharmacy, University of Oradea, 410087 Oradea, Romania
| | - Felicia Liana Andronie-Cioară
- Department of Psycho-Neurosciences and Rehabilitation, Faculty of Medicine and Pharmacy, University of Oradea, 410087 Oradea, Romania
| | - Florin Marcu
- Department of Psycho-Neurosciences and Rehabilitation, Faculty of Medicine and Pharmacy, University of Oradea, 410087 Oradea, Romania
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Enteric Neural Network Assembly Was Promoted by Basic Fibroblast Growth Factor and Vitamin A but Inhibited by Epidermal Growth Factor. Cells 2022; 11:cells11182841. [PMID: 36139415 PMCID: PMC9496868 DOI: 10.3390/cells11182841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 09/01/2022] [Accepted: 09/09/2022] [Indexed: 11/17/2022] Open
Abstract
Extending well beyond the original use of propagating neural precursors from the central nervous system and dorsal root ganglia, neurosphere medium (NSM) and self-renewal medium (SRM) are two distinct formulas with widespread popularity in enteric neural stem cell (ENSC) applications. However, it remains unknown what growth factors or nutrients are crucial to ENSC development, let alone whether the discrepancy in their components may affect the outcomes of ENSC culture. Dispersed enterocytes from murine fetal gut were nurtured in NSM, SRM or their modifications by selective component elimination or addition to assess their effects on ENSC development. NSM generated neuriteless neurospheres, whereas SRM, even deprived of chicken embryo extract, might wire ganglia together to assemble neural networks. The distinct outcomes came from epidermal growth factor, which inhibited enteric neuronal wiring in NSM. In contrast, basic fibroblast growth factor promoted enteric neurogenesis, gangliogenesis, and neuronal wiring. Moreover, vitamin A derivatives might facilitate neuronal maturation evidenced by p75 downregulation during ENSC differentiation toward enteric neurons to promote gangliogenesis and network assembly. Our results might help to better manipulate ENSC propagation and differentiation in vitro, and open a new avenue for the study of enteric neuronal neuritogenesis and synaptogenesis.
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Transplantation of human neural progenitor cells secreting GDNF into the spinal cord of patients with ALS: a phase 1/2a trial. Nat Med 2022; 28:1813-1822. [PMID: 36064599 PMCID: PMC9499868 DOI: 10.1038/s41591-022-01956-3] [Citation(s) in RCA: 54] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 07/18/2022] [Indexed: 11/08/2022]
Abstract
Amyotrophic lateral sclerosis (ALS) involves progressive motor neuron loss, leading to paralysis and death typically within 3–5 years of diagnosis. Dysfunctional astrocytes may contribute to disease and glial cell line-derived neurotrophic factor (GDNF) can be protective. Here we show that human neural progenitor cells transduced with GDNF (CNS10-NPC-GDNF) differentiated to astrocytes protected spinal motor neurons and were safe in animal models. CNS10-NPC-GDNF were transplanted unilaterally into the lumbar spinal cord of 18 ALS participants in a phase 1/2a study (NCT02943850). The primary endpoint of safety at 1 year was met, with no negative effect of the transplant on motor function in the treated leg compared with the untreated leg. Tissue analysis of 13 participants who died of disease progression showed graft survival and GDNF production. Benign neuromas near delivery sites were common incidental findings at post-mortem. This study shows that one administration of engineered neural progenitors can provide new support cells and GDNF delivery to the ALS patient spinal cord for up to 42 months post-transplantation. A phase 1/2a study shows that human neural progenitor cells modified to release the growth factor GDNF are safely transplanted into the spinal cord of patients with ALS, with cell survival and GDNF production for over 3 years.
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Cell Surface Proteins for Enrichment and In Vitro Characterization of Human Pluripotent Stem Cell-Derived Myogenic Progenitors. Stem Cells Int 2022; 2022:2735414. [PMID: 35251185 PMCID: PMC8894063 DOI: 10.1155/2022/2735414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 01/04/2022] [Accepted: 01/12/2022] [Indexed: 11/17/2022] Open
Abstract
Human myogenic progenitors can be derived from pluripotent stem cells (PSCs) for use in modeling natural and pathological myogenesis, as well as treating muscle diseases. Transgene-free methods of deriving myogenic progenitors from different PSC lines often produce mixed populations that are heterogeneous in myogenic differentiation potential, yet detailed and accurate characterization of human PSC-derived myogenic progenitors remains elusive in the field. The isolation and purification of human PSC-derived myogenic progenitors is thus an important methodological consideration when we investigate the properties and behaviors of these cells in culture. We previously reported a transgene-free, serum-free floating sphere culture method for the derivation of myogenic progenitors from human PSCs. In this study, we first performed comprehensive cell surface protein profiling of the sphere culture cells through the screening of 255 antibodies. Next, we used magnetic activated cell sorting and enriched the cells according to the expression of specific surface markers. The ability of muscle differentiation in the resulting cells was characterized by immunofluorescent labeling and quantification of positively stained cells. Our results revealed that myotube-forming cells resided in the differentiated cultures of CD29+, CD56+, CD271+, and CD15– fractions, while thick and multinucleated myotubes were identified in the differentiated cultures from CD9+ and CD146+ fractions. We found that PAX7 localization to the nucleus correlates with myotube-forming ability in these sorted populations. We also demonstrated that cells in unsorted, CD271+, and CD15– fractions responded differently to cryopreservation and prolonged culture expansion. Lastly, we showed that CD271 expression is essential for terminal differentiation of human PSC-derived myogenic progenitors. Taken together, these cell surface proteins are not only useful markers to identify unique cellular populations in human PSC-derived myogenic progenitors but also functionally important molecules that can provide valuable insight into human myogenesis.
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Parambi DGT, Alharbi KS, Kumar R, Harilal S, Batiha GES, Cruz-Martins N, Magdy O, Musa A, Panda DS, Mathew B. Gene Therapy Approach with an Emphasis on Growth Factors: Theoretical and Clinical Outcomes in Neurodegenerative Diseases. Mol Neurobiol 2022; 59:191-233. [PMID: 34655056 PMCID: PMC8518903 DOI: 10.1007/s12035-021-02555-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 09/05/2021] [Indexed: 12/11/2022]
Abstract
The etiology of many neurological diseases affecting the central nervous system (CNS) is unknown and still needs more effective and specific therapeutic approaches. Gene therapy has a promising future in treating neurodegenerative disorders by correcting the genetic defects or by therapeutic protein delivery and is now an attraction for neurologists to treat brain disorders, like Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis, spinal muscular atrophy, spinocerebellar ataxia, epilepsy, Huntington's disease, stroke, and spinal cord injury. Gene therapy allows the transgene induction, with a unique expression in cells' substrate. This article mainly focuses on the delivering modes of genetic materials in the CNS, which includes viral and non-viral vectors and their application in gene therapy. Despite the many clinical trials conducted so far, data have shown disappointing outcomes. The efforts done to improve outcomes, efficacy, and safety in the identification of targets in various neurological disorders are also discussed here. Adapting gene therapy as a new therapeutic approach for treating neurological disorders seems to be promising, with early detection and delivery of therapy before the neuron is lost, helping a lot the development of new therapeutic options to translate to the clinic.
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Affiliation(s)
- Della Grace Thomas Parambi
- College of Pharmacy, Department of Pharmaceutical Chemistry, Jouf University, Al Jouf-2014, Sakaka, Saudi Arabia
| | - Khalid Saad Alharbi
- College of Pharmacy, Department of Pharmaceutical Chemistry, Jouf University, Al Jouf-2014, Sakaka, Saudi Arabia
| | - Rajesh Kumar
- Kerala University of Health Sciences, Thrissur, Kerala 680596 India
| | - Seetha Harilal
- Kerala University of Health Sciences, Thrissur, Kerala 680596 India
| | - Gaber El-Saber Batiha
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhour University, Damanhour, 22511 Al Beheira Egypt
| | - Natália Cruz-Martins
- Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal
- Institute for Research and Innovation in Health (i3S), University of Porto, 4200-135 Porto, Portugal
- Institute of Research and Advanced Training in Health Sciences and Technologies (CESPU), Rua Central de Gandra, 1317, 4585-116 Gandra PRD, Portugal
| | - Omnia Magdy
- Department of Clinical Pharmacology, College of Pharmacy, Jouf University, Sakaka, Al Jouf-2014 Kingdom of Saudi Arabia
- Pharmacognosy Department, College of Pharmacy, Jouf University, Sakaka, Aljouf 72341 Kingdom of Saudi Arabia
| | - Arafa Musa
- Pharmacognosy Department, College of Pharmacy, Jouf University, Sakaka, Aljouf 72341 Kingdom of Saudi Arabia
- Pharmacognosy Department, Faculty of Pharmacy, Al-Azhar University, Cairo, 11371 Egypt
| | - Dibya Sundar Panda
- Department of Pharmaceutics, College of Pharmacy, Jouf University, Al Jouf, Sakaka, 72341 Kingdom of Saudi Arabia
| | - Bijo Mathew
- Department of Pharmaceutical Chemistry, Amrita School of Pharmacy, Amrita Vishwa Vidyapeetham, AIMS Health Sciences Campus, Kochi, 682 041 India
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12
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Akimov SS, Jiang M, Kedaigle AJ, Arbez N, Marque LO, Eddings CR, Ranum PT, Whelan E, Tang A, Wang R, DeVine LR, Talbot CC, Cole RN, Ratovitski T, Davidson BL, Fraenkel E, Ross CA. Immortalized striatal precursor neurons from Huntington's disease patient-derived iPS cells as a platform for target identification and screening for experimental therapeutics. Hum Mol Genet 2021; 30:2469-2487. [PMID: 34296279 PMCID: PMC8643509 DOI: 10.1093/hmg/ddab200] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 07/08/2021] [Accepted: 07/09/2021] [Indexed: 11/12/2022] Open
Abstract
We have previously established induced pluripotent stem cell (iPSC) models of Huntington's disease (HD), demonstrating CAG-repeat-expansion-dependent cell biological changes and toxicity. However, the current differentiation protocols are cumbersome and time consuming, making preparation of large quantities of cells for biochemical or screening assays difficult. Here, we report the generation of immortalized striatal precursor neurons (ISPNs) with normal (33) and expanded (180) CAG repeats from HD iPSCs, differentiated to a phenotype resembling medium spiny neurons (MSN), as a proof of principle for a more tractable patient-derived cell model. For immortalization, we used co-expression of the enzymatic component of telomerase hTERT and conditional expression of c-Myc. ISPNs can be propagated as stable adherent cell lines, and rapidly differentiated into highly homogeneous MSN-like cultures within 2 weeks, as demonstrated by immunocytochemical criteria. Differentiated ISPNs recapitulate major HD-related phenotypes of the parental iPSC model, including brain-derived neurotrophic factor (BDNF)-withdrawal-induced cell death that can be rescued by small molecules previously validated in the parental iPSC model. Proteome and RNA-seq analyses demonstrate separation of HD versus control samples by principal component analysis. We identified several networks, pathways, and upstream regulators, also found altered in HD iPSCs, other HD models, and HD patient samples. HD ISPN lines may be useful for studying HD-related cellular pathogenesis, and for use as a platform for HD target identification and screening experimental therapeutics. The described approach for generation of ISPNs from differentiated patient-derived iPSCs could be applied to a larger allelic series of HD cell lines, and to comparable modeling of other genetic disorders.
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Affiliation(s)
- Sergey S Akimov
- Division of Neurobiology, Department of Psychiatry, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Mali Jiang
- Division of Neurobiology, Department of Psychiatry, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Amanda J Kedaigle
- Department of Biological Engineering, Computational and Systems Biology Graduate Program, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - Nicolas Arbez
- Division of Neurobiology, Department of Psychiatry, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Leonard O Marque
- Division of Neurobiology, Department of Psychiatry, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Chelsy R Eddings
- Division of Neurobiology, Department of Psychiatry, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Paul T Ranum
- The Department of Pathology and Laboratory Medicine, The University of Pennsylvania, The Raymond G Perelman Center for Cellular and Molecular Therapeutics, The Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Emma Whelan
- Division of Neurobiology, Department of Psychiatry, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Anthony Tang
- Division of Neurobiology, Department of Psychiatry, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Ronald Wang
- Division of Neurobiology, Department of Psychiatry, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Lauren R DeVine
- Mass Spectrometry and Proteomics Facility, Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Conover C Talbot
- The Johns Hopkins School of Medicine, Institute for Basic Biomedical Sciences, Baltimore, MD 21205, USA
| | - Robert N Cole
- Mass Spectrometry and Proteomics Facility, Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Tamara Ratovitski
- Division of Neurobiology, Department of Psychiatry, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Beverly L Davidson
- The Department of Pathology and Laboratory Medicine, The University of Pennsylvania, The Raymond G Perelman Center for Cellular and Molecular Therapeutics, The Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
- The Department of Pathology and Laboratory Medicine, The University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Ernest Fraenkel
- Department of Biological Engineering, Computational and Systems Biology Graduate Program, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - Christopher A Ross
- Division of Neurobiology, Department of Psychiatry, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
- Department of Neurology, Neuroscience and Pharmacology, The Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
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13
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Kim YM, Kim HJ. Proteasome Inhibitor MG132 is Toxic and Inhibits the Proliferation of Rat Neural Stem Cells but Increases BDNF Expression to Protect Neurons. Biomolecules 2020; 10:biom10111507. [PMID: 33147870 PMCID: PMC7692322 DOI: 10.3390/biom10111507] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 10/21/2020] [Accepted: 10/27/2020] [Indexed: 12/31/2022] Open
Abstract
Regulation of protein expression is essential for maintaining normal cell function. Proteasomes play important roles in protein degradation and dysregulation of proteasomes is implicated in neurodegenerative disorders. In this study, using a proteasome inhibitor MG132, we showed that proteasome inhibition reduces neural stem cell (NSC) proliferation and is toxic to NSCs. Interestingly, MG132 treatment increased the percentage of neurons in both proliferation and differentiation culture conditions of NSCs. Proteasome inhibition reduced B-cell lymphoma 2 (Bcl-2)/Bcl-2 associated X protein ratio. In addition, MG132 treatment induced cAMP response element-binding protein phosphorylation and increased the expression of brain-derived neurotrophic factor transcripts and proteins. These data suggest that proteasome function is important for NSC survival and differentiation. Moreover, although MG132 is toxic to NSCs, it may increase neurogenesis. Therefore, by modifying MG132 chemical structure and developing none toxic proteasome inhibitors, neurogenic chemicals can be developed to control NSC cell fate.
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Affiliation(s)
| | - Hyun-Jung Kim
- Correspondence: ; Tel.: +82-2-820-5619; Fax: +82-2-816-7338
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14
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Barenys M, Illa M, Hofrichter M, Loreiro C, Pla L, Klose J, Kühne BA, Gómez-Catalán J, Braun JM, Crispi F, Gratacós E, Fritsche E. Rabbit neurospheres as a novel in vitro tool for studying neurodevelopmental effects induced by intrauterine growth restriction. Stem Cells Transl Med 2020; 10:209-221. [PMID: 33034168 PMCID: PMC7848321 DOI: 10.1002/sctm.20-0223] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 08/07/2020] [Accepted: 08/16/2020] [Indexed: 12/11/2022] Open
Abstract
The aim of this study was to develop a rabbit neurosphere culture to characterize differences in basic processes of neurogenesis induced by intrauterine growth restriction (IUGR). A novel in vitro neurosphere culture has been established using fresh or frozen neural progenitor cells from newborn (PND0) rabbit brains. After surgical IUGR induction in pregnant rabbits and cesarean section 5 days later, neural progenitor cells from both control and IUGR groups were isolated and directly cultured or frozen at −80°C. These neural progenitor cells spontaneously formed neurospheres after 7 days in culture. The ability of control and IUGR neurospheres to migrate, proliferate, differentiate to neurons, astrocytes, or oligodendrocytes was compared and the possibility to modulate their responses was tested by exposure to several positive and negative controls. Neurospheres obtained from IUGR brains have a significant impairment in oligodendrocyte differentiation, whereas no significant differences are observed in other basic processes of neurogenesis. This impairment can be reverted by in vitro exposure of IUGR neurospheres to thyroid hormone, which is known to play an essential role in white matter maturation in vivo. Our new rabbit neurosphere model and the results of this study open the possibility to test several substances in vitro as neuroprotective candidates against IUGR induced neurodevelopmental damage while decreasing the number of animals and resources and allowing a more mechanistic approach at a cellular functional level.
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Affiliation(s)
- Marta Barenys
- IUF-Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany.,GRET, INSA-UB and Toxicology Unit, Pharmacology, Toxicology and Therapeutical Chemistry Department, Faculty of Pharmacy, University of Barcelona, Barcelona, Spain
| | - Miriam Illa
- BCNatal-Barcelona Center for Maternal-Fetal and Neonatal Medicine (Hospital Clínic and Hospital Sant Joan de Déu), Fetal i+D Fetal Medicine Research Center, IDIBAPS, University of Barcelona, Center for Biomedical Research on Rare Diseases (CIBER-ER), Barcelona, Spain
| | - Maxi Hofrichter
- IUF-Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Carla Loreiro
- BCNatal-Barcelona Center for Maternal-Fetal and Neonatal Medicine (Hospital Clínic and Hospital Sant Joan de Déu), Fetal i+D Fetal Medicine Research Center, IDIBAPS, University of Barcelona, Center for Biomedical Research on Rare Diseases (CIBER-ER), Barcelona, Spain
| | - Laura Pla
- BCNatal-Barcelona Center for Maternal-Fetal and Neonatal Medicine (Hospital Clínic and Hospital Sant Joan de Déu), Fetal i+D Fetal Medicine Research Center, IDIBAPS, University of Barcelona, Center for Biomedical Research on Rare Diseases (CIBER-ER), Barcelona, Spain
| | - Jördis Klose
- IUF-Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Britta Anna Kühne
- GRET, INSA-UB and Toxicology Unit, Pharmacology, Toxicology and Therapeutical Chemistry Department, Faculty of Pharmacy, University of Barcelona, Barcelona, Spain.,BCNatal-Barcelona Center for Maternal-Fetal and Neonatal Medicine (Hospital Clínic and Hospital Sant Joan de Déu), Fetal i+D Fetal Medicine Research Center, IDIBAPS, University of Barcelona, Center for Biomedical Research on Rare Diseases (CIBER-ER), Barcelona, Spain
| | - Jesús Gómez-Catalán
- GRET, INSA-UB and Toxicology Unit, Pharmacology, Toxicology and Therapeutical Chemistry Department, Faculty of Pharmacy, University of Barcelona, Barcelona, Spain
| | - Jan Matthias Braun
- IUF-Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Fatima Crispi
- BCNatal-Barcelona Center for Maternal-Fetal and Neonatal Medicine (Hospital Clínic and Hospital Sant Joan de Déu), Fetal i+D Fetal Medicine Research Center, IDIBAPS, University of Barcelona, Center for Biomedical Research on Rare Diseases (CIBER-ER), Barcelona, Spain
| | - Eduard Gratacós
- BCNatal-Barcelona Center for Maternal-Fetal and Neonatal Medicine (Hospital Clínic and Hospital Sant Joan de Déu), Fetal i+D Fetal Medicine Research Center, IDIBAPS, University of Barcelona, Center for Biomedical Research on Rare Diseases (CIBER-ER), Barcelona, Spain
| | - Ellen Fritsche
- IUF-Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
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15
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Zhao S, Duan K, Ai Z, Niu B, Chen Y, Kong R, Li T. Generation of cortical neurons through large-scale expanding neuroepithelial stem cell from human pluripotent stem cells. Stem Cell Res Ther 2020; 11:431. [PMID: 33008480 PMCID: PMC7532602 DOI: 10.1186/s13287-020-01939-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 07/22/2020] [Accepted: 09/17/2020] [Indexed: 02/08/2023] Open
Abstract
Background Considerable progress has been made in converting human pluripotent stem cells (hPSCs) into cortical neurons for disease modeling and regenerative medicine. However, these procedures are hard to provide sufficient cells for their applications. Using a combination of small-molecules and growth factors, we previously identified one condition which can rapidly induce hPSCs into neuroepithelial stem cells (NESCs). Here, we developed a scalable suspension culture system, which largely yields high-quality NESC-spheres and subsequent cortical neurons. Methods The NESC medium was first optimized, and the suspension culture system was then enlarged from plates to stirred bioreactors for large-scale production of NESC-spheres by a stirring speed of 60 rpm. During the expansion, the quality of NESC-spheres was evaluated. The differentiation potential of NESC-spheres into cortical neurons was demonstrated by removing bFGF and two pathway inhibitors from the NESC medium. Cellular immunofluorescence staining, global transcriptome, and single-cell RNA sequencing analysis were used to identify the characteristics, identities, purities, or homogeneities of NESC-spheres or their differentiated cells, respectively. Results The optimized culture system is more conducive to large-scale suspension production of NESCs. These largely expanded NESC-spheres maintain unlimited self-renewal ability and NESC state by retaining their uniform sizes, high cell vitalities, and robust expansion abilities. After long-term expansion, NESC-spheres preserve high purity, homogeneity, and normal diploid karyotype. These expanded NESC-spheres on a large scale have strong differentiation potential and effectively produce mature cortical neurons. Conclusions We developed a serum-free, defined, and low-cost culture system for large-scale expansion of NESCs in stirred suspension bioreactors. The stable and controllable 3D system supports long-term expansion of high-quality and homogeneous NESC-spheres. These NESC-spheres can be used to efficiently give rise to cortical neurons for cell therapy, disease modeling, and drug screening in future.
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Affiliation(s)
- Shumei Zhao
- Yunnan Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, China
| | - Kui Duan
- Yunnan Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, China
| | - Zongyong Ai
- Yunnan Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, China
| | - Baohua Niu
- Yunnan Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, China
| | - Yanying Chen
- Yunnan Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, China
| | - Ruize Kong
- Yunnan Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, China
| | - Tianqing Li
- Yunnan Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, China. .,Xi'an ChaoYue Stem Cell Co, Ltd, Xi'an, China.
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16
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Gordon A, Geschwind DH. Human in vitro models for understanding mechanisms of autism spectrum disorder. Mol Autism 2020; 11:26. [PMID: 32299488 PMCID: PMC7164291 DOI: 10.1186/s13229-020-00332-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 04/01/2020] [Indexed: 02/06/2023] Open
Abstract
Early brain development is a critical epoch for the development of autism spectrum disorder (ASD). In vivo animal models have, until recently, been the principal tool used to study early brain development and the changes occurring in neurodevelopmental disorders such as ASD. In vitro models of brain development represent a significant advance in the field. Here, we review the main methods available to study human brain development in vitro and the applications of these models for studying ASD and other psychiatric disorders. We discuss the main findings from stem cell models to date focusing on cell cycle and proliferation, cell death, cell differentiation and maturation, and neuronal signaling and synaptic stimuli. To be able to generalize the results from these studies, we propose a framework of experimental design and power considerations for using in vitro models to study ASD. These include both technical issues such as reproducibility and power analysis and conceptual issues such as the brain region and cell types being modeled.
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Affiliation(s)
- Aaron Gordon
- Department of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Daniel H Geschwind
- Department of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA.
- Program in Neurobehavioral Genetics, Semel Institute, David Geffen School of Medicine, University of California, Los Angeles, CA, USA.
- Center for Autism Research and Treatment, Semel Institute, David Geffen School of Medicine, University of California, Los Angeles, CA, USA.
- Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, CA, USA.
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17
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Azzarelli R. Organoid Models of Glioblastoma to Study Brain Tumor Stem Cells. Front Cell Dev Biol 2020; 8:220. [PMID: 32373607 PMCID: PMC7176979 DOI: 10.3389/fcell.2020.00220] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 03/16/2020] [Indexed: 12/14/2022] Open
Abstract
Glioblastoma represents an aggressive form of brain cancer characterized by poor prognosis and a 5-year survival rate of only 3–7%. Despite remarkable advances in brain tumor research in the past decades, very little has changed for patients, due in part to the recurrent nature of the disease and to the lack of suitable models to perform genotype-phenotype association studies and personalized drug screening. In vitro culture of cancer cells derived from patient biopsies has been fundamental in understanding tumor biology and for testing the effect of various drugs. These cultures emphasize the role of in vitro cancer stem cells (CSCs), which fuel tumor growth and are thought to be the cause of relapse after treatment. However, it has become clear over the years that a 2D monolayer culture of these CSCs has certain disadvantages, including the lack of heterogeneous cell-cell and cell-environment interactions, which can now be partially overcome by the introduction of 3D organoid cultures. This is a novel and expanding field of research and in this review, I describe the emerging 3D models of glioblastoma. I also discuss their potential to advance our knowledge of tumor biology and CSC heterogeneity, while debating their current limitations.
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Affiliation(s)
- Roberta Azzarelli
- Unit of Cell and Developmental Biology, Department of Biology, University of Pisa, Pisa, Italy
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18
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Schroeder AB, Pointer KB, Clark PA, Datta R, Kuo JS, Eliceiri KW. Metabolic mapping of glioblastoma stem cells reveals NADH fluxes associated with glioblastoma phenotype and survival. JOURNAL OF BIOMEDICAL OPTICS 2020; 25:1-13. [PMID: 32216192 PMCID: PMC7093735 DOI: 10.1117/1.jbo.25.3.036502] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 03/11/2020] [Indexed: 05/20/2023]
Abstract
SIGNIFICANCE Glioblastoma multiforme (GBM) is the most frequently diagnosed adult primary brain malignancy with poor patient prognosis. GBM can recur despite aggressive treatment due to therapeutically resistant glioblastoma stem cells (GSCs) that may exhibit metabolic plasticity. AIM Intrinsic nicotinamide adenine dinucleotide (NADH) fluorescence can be acquired with fluorescence lifetime imaging microscopy (FLIM) to examine its bound and free metabolic states in GSC and GBM tissues. APPROACH We compared the mean NADH fluorescence lifetime in live human GSCs and normal neural stem cells and validated those results by measuring oxygen consumption rates (OCRs). We also examined the role that invasive versus less-invasive GSCs had on tumor metabolism by measuring the mean NADH lifetimes and the relative amount of the longer-lived component of NADH and correlated these results with survival in an orthotopic mouse xenograft model. RESULTS Mean NADH lifetime, amount of bound NADH, and OCR were increased in GSCs. Compared with normal mouse brain, mean NADH lifetimes were longer for all GBM tissues. Invasive xenografts had higher relative amounts of the longer-lived NADH component, and this correlated with decreased survival. CONCLUSIONS FLIM offers cellular resolution quantification of metabolic flux in GBM phenotypes, potentially informing biomedical researchers on improved therapeutic approaches.
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Affiliation(s)
- Alexandra B. Schroeder
- University of Wisconsin–Madison, Laboratory for Optical and Computational Instrumentation, Madison, Wisconsin, United States
- University of Wisconsin–Madison, Department of Medical Physics, Madison, Wisconsin, United States
- Morgridge Institute for Research, Madison, Wisconsin, United States
| | - Kelli B. Pointer
- University of Wisconsin–Madison, Laboratory for Optical and Computational Instrumentation, Madison, Wisconsin, United States
- University of Wisconsin–Madison, Department of Neurosurgery, Madison, Wisconsin, United States
- The University of Chicago, Department of Radiation and Cellular Oncology, Chicago, Illinois, United States
| | - Paul A. Clark
- University of Wisconsin–Madison, Department of Neurosurgery, Madison, Wisconsin, United States
- University of Wisconsin–Madison, Department of Human Oncology, Madison, Wisconsin, United States
| | - Rupsa Datta
- Morgridge Institute for Research, Madison, Wisconsin, United States
| | - John S. Kuo
- University of Wisconsin–Madison, Department of Neurosurgery, Madison, Wisconsin, United States
- The University of Texas at Austin, Dell Medical School, Department of Neurosurgery and Mulva Clinic for the Neurosciences, Austin, Texas, United States
| | - Kevin W. Eliceiri
- University of Wisconsin–Madison, Laboratory for Optical and Computational Instrumentation, Madison, Wisconsin, United States
- University of Wisconsin–Madison, Department of Medical Physics, Madison, Wisconsin, United States
- Morgridge Institute for Research, Madison, Wisconsin, United States
- University of Wisconsin–Madison, Department of Biomedical Engineering, Madison, Wisconsin, United States
- Address all correspondence to Kevin W. Eliceiri, E-mail:
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19
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Zhang L, Yu H, Yuan Y, Yu JS, Lou Z, Xue Y, Liu Y. The necessity for standardization of glioma stem cell culture: a systematic review. Stem Cell Res Ther 2020; 11:84. [PMID: 32102678 PMCID: PMC7045630 DOI: 10.1186/s13287-020-01589-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 12/15/2019] [Accepted: 02/06/2020] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND The cancer stem cell hypothesis is an old idea which has been revived in recent years for many cancers, including gliomas. However, this concept has become controversial due to a series of studies with conflicting results. METHODS A systematic literature search was conducted in PubMed and the Web of Science database to analyze studies using serum-free medium and its components in glioma stem cells, glioma stem-like cells, glioma-initiating cells, or glioma neurosphere cultures. All the studies reviewed were published between 1970 and 2019. We found that no standardized culture method was used, and the data were incomparable due to differing culture conditions and the use of media with different components. CONCLUSIONS Here, we review the most commonly used serum-free media and added components for glioma stem cell culture while highlighting the function of each component used in the media. We emphasize the necessity for standardization of glioma stem cell culture and propose a standard culture medium to prevent bias in glioma stem cell research.
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Affiliation(s)
- Lei Zhang
- Department of Neurosurgery, Shengjing Hospital of China Medical University, # 36 Sanhao Street, Heping District, Shenyang, China.,Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, USA.,Department of Oncology, Mayo Clinic, Rochester, USA
| | - Hongwei Yu
- Department of Neurosurgery, Shengjing Hospital of China Medical University, # 36 Sanhao Street, Heping District, Shenyang, China
| | - Yuhui Yuan
- Department of Neurosurgery, Shengjing Hospital of China Medical University, # 36 Sanhao Street, Heping District, Shenyang, China
| | - John S Yu
- Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, USA
| | - Zhenkun Lou
- Department of Oncology, Mayo Clinic, Rochester, USA
| | - Yixue Xue
- Department of Neurobiology, School of Life Sciences, China Medical University, Shenyang, China
| | - Yunhui Liu
- Department of Neurosurgery, Shengjing Hospital of China Medical University, # 36 Sanhao Street, Heping District, Shenyang, China.
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20
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Alrfaei BM, Clark P, Vemuganti R, Kuo JS. MicroRNA miR-100 Decreases Glioblastoma Growth by Targeting SMARCA5 and ErbB3 in Tumor-Initiating Cells. Technol Cancer Res Treat 2020; 19:1533033820960748. [PMID: 32945237 PMCID: PMC7502994 DOI: 10.1177/1533033820960748] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 08/12/2020] [Accepted: 08/28/2020] [Indexed: 01/09/2023] Open
Abstract
Glioblastoma multiforme (GBM) is the most aggressive and most frequently diagnosed malignant human glioma. Despite the best available standard of care (surgery, radiation, and chemotherapy), the median survival of GBM patients is less than 2 years. Many recent studies have indicated that microRNAs (miRNAs) are important for promoting or reducing/limiting GBM growth. In particular, we previously showed that GBMs express decreased levels of miR-100 relative to control tissue and that restoring miR-100 expression reduced GBM tumorigenicity by modulating SMRT/NCOR2 (Nuclear Receptor Corepressor 2). Here, we demonstrate that miR-100 overexpression decreases expression of the stem cell markers, nestin and L1CAM, and decreases proliferation of GBM tumor-initiating cells (cancer stem cells). We further show that miR-100-mediated anti-tumorigenic activity limits the activity of SMARCA5 and its downstream target STAT3 (known as mTOR-STAT3-Notch pathway). In addition, we report ErbB3 (Her3) as a putative miR-100 target, including inhibition of its downstream AKT and ERK signaling pathways.
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Affiliation(s)
- Bahauddeen M. Alrfaei
- Department of Neurological Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
- Cellular and Molecular Pathology Training Program, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
- Department of Cellular Therapy and Cancer Res, King Abdullah Int’l Medical Research Center (KAIMRC), King Saud bin Abdulaziz University for Health Sciences (KSAU-HS), Riyadh, Saudi Arabia
| | - Paul Clark
- Department of Neurological Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
- Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Raghu Vemuganti
- Department of Neurological Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
- Cellular and Molecular Pathology Training Program, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
- Neuroscience Training Program, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
- William S. Middleton Memorial Veterans Hospital, Madison, WI, USA
| | - John S. Kuo
- Department of Neurological Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
- Cellular and Molecular Pathology Training Program, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
- Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
- Neuroscience Training Program, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
- Department of Neurosurgery, Dell Medical School, The University of Texas at Austin, Austin, TX, USA
- Mulva Clinic for the Neurosciences, The University of Texas at Austin, Austin, TX, USA
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21
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Liang X, Yin N, Liang S, Yang R, Liu S, Lu Y, Jiang L, Zhou Q, Jiang G, Faiola F. Bisphenol A and several derivatives exert neural toxicity in human neuron-like cells by decreasing neurite length. Food Chem Toxicol 2020; 135:111015. [DOI: 10.1016/j.fct.2019.111015] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 11/28/2019] [Accepted: 11/30/2019] [Indexed: 02/06/2023]
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22
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Rosa M, Degregori E, Ferst J, Pillat M, Bertolin K, Souza J, Bello L, Pinto Filho S, Müller D. Isolamento e diferenciação das células-tronco da polpa dentária canina em células progenitoras neurais. ARQ BRAS MED VET ZOO 2019. [DOI: 10.1590/1678-4162-10672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
RESUMO O objetivo deste estudo foi verificar a capacidade de diferenciação das células-tronco da polpa dentária canina em células progenitoras neurais bem como quantificar obtenção e viabilidade celular, durante três passagens em cultura. As células foram extraídas da polpa dentária de dois cadáveres caninos, com aproximadamente dez meses de idade, que foram a óbito em decorrência de traumatismo automotivo. Após três subculturas, realizou-se avaliação da viabilidade celular por quantificação em câmara de Neubauer. A partir disso, induziu-se diferenciação neural em meio de cultura neurobasal (Gibco™), com células aderidas ao plástico ou suspensas em placas tratadas com agarose. Após sete e 14 dias em cultivo indutor, observou-se morfologia e perfil imunofenotípico utilizando citometria de fluxo e imunocitoquímica fluorescente. Aos 14 dias as células apresentaram alto grau de expressão para marcadores anti-nestina e anti-glial fibrillary acidic protein (anti-GFAP). Anteriormente, obteve-se ao 25º dia, média de 18x10⁶ células viáveis indiferenciadas oriundas do tecido pulpar. Sugere-se que as células-tronco indiferenciadas da polpa dentária canina apresentem índices satisfatórios de diferenciação em células progenitoras neurais, aderidas ou suspensas em cultura. A polpa dentária dos dentes decíduos caninos, fornece células indiferenciadas viáveis em quantidade adequada.
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Affiliation(s)
- M.P. Rosa
- Universidade Federal de Santa Maria, Brazil
| | | | - J.G. Ferst
- Universidade Federal de Santa Maria, Brazil
| | | | | | | | - L.K. Bello
- Universidade Federal de Santa Maria, Brazil
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23
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Leung AW, Li JYH. An adherent-cell depletion technique to generate human neural progenitors and neurons. J Cell Physiol 2019; 234:19933-19941. [PMID: 30972783 DOI: 10.1002/jcp.28591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 03/18/2019] [Indexed: 11/06/2022]
Abstract
Existing methodologies to produce human neural stem cells and neurons from embryonic stem cells frequently involve multistep processes and the use of complex and expensive media components, cytokines or small molecules. Here, we report a simple technique to generate human neuroepithelial progenitors and neurons by periodic mechanical dissection and adherent-cell depletion on regular cell-culture grade plastic surfaces. This neural induction technique does not employ growth factors, small molecules or peptide inhibitors, apart from those present in serum-free supplements. Suggestive of their central nervous system origin, we found that neural progenitors formed by this technique expressed radial glia markers, and, when differentiated, expressed TUBB3, RBFOX3 (NeuN) and serotonin, but not markers for peripheral neurons. With these data, we postulate that incorporation of periodic mechanical stimuli and plastic surface-mediated cell selection could improve and streamline existing human neuron production protocols.
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Affiliation(s)
- Alan W Leung
- Department of Genetics and Genome Sciences, University of Connecticut School of Medicine, Farmington, Connecticut
| | - James Y H Li
- Department of Genetics and Genome Sciences, University of Connecticut School of Medicine, Farmington, Connecticut
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24
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Wang Y, Graham ES, Unsworth CP. First observations of spontaneous bursting in human hNT neurons with a customised neural chip platform. Biomed Phys Eng Express 2019. [DOI: 10.1088/2057-1976/ab4b24] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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25
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Wei WJ, Shi B, Guan X, Ma JY, Wang YC, Liu J. Mapping theme trends and knowledge structures for human neural stem cells: a quantitative and co-word biclustering analysis for the 2013-2018 period. Neural Regen Res 2019; 14:1823-1832. [PMID: 31169201 PMCID: PMC6585554 DOI: 10.4103/1673-5374.257535] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 03/06/2019] [Indexed: 01/27/2023] Open
Abstract
Neural stem cells, which are capable of multi-potential differentiation and self-renewal, have recently been shown to have clinical potential for repairing central nervous system tissue damage. However, the theme trends and knowledge structures for human neural stem cells have not yet been studied bibliometrically. In this study, we retrieved 2742 articles from the PubMed database from 2013 to 2018 using "Neural Stem Cells" as the retrieval word. Co-word analysis was conducted to statistically quantify the characteristics and popular themes of human neural stem cell-related studies. Bibliographic data matrices were generated with the Bibliographic Item Co-Occurrence Matrix Builder. We identified 78 high-frequency Medical Subject Heading (MeSH) terms. A visual matrix was built with the repeated bisection method in gCLUTO software. A social network analysis network was generated with Ucinet 6.0 software and GraphPad Prism 5 software. The analyses demonstrated that in the 6-year period, hot topics were clustered into five categories. As suggested by the constructed strategic diagram, studies related to cytology and physiology were well-developed, whereas those related to neural stem cell applications, tissue engineering, metabolism and cell signaling, and neural stem cell pathology and virology remained immature. Neural stem cell therapy for stroke and Parkinson's disease, the genetics of microRNAs and brain neoplasms, as well as neuroprotective agents, Zika virus, Notch receptor, neural crest and embryonic stem cells were identified as emerging hot spots. These undeveloped themes and popular topics are potential points of focus for new studies on human neural stem cells.
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Affiliation(s)
- Wen-Juan Wei
- Stem Cell Clinical Research Center, the First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning Province, China
- National Joint Engineering Laboratory, the First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning Province, China
| | - Bei Shi
- Department of Physiology, China Medical University, Shenyang, Liaoning Province, China
| | - Xin Guan
- Stem Cell Clinical Research Center, the First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning Province, China
- National Joint Engineering Laboratory, the First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning Province, China
| | - Jing-Yun Ma
- Stem Cell Clinical Research Center, the First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning Province, China
- National Joint Engineering Laboratory, the First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning Province, China
| | - Ya-Chen Wang
- Stem Cell Clinical Research Center, the First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning Province, China
- National Joint Engineering Laboratory, the First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning Province, China
| | - Jing Liu
- Stem Cell Clinical Research Center, the First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning Province, China
- National Joint Engineering Laboratory, the First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning Province, China
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26
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Yasui T, Nakashima K. [Hypoxia epigenetically bestows astrocytic differentiation potential on human pluripotent cell-derived neural stem/precursor cells]. Nihon Yakurigaku Zasshi 2019; 153:54-60. [PMID: 30745514 DOI: 10.1254/fpj.153.54] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The central nervous system (CNS) is composed of three major cell types, neurons, astrocytes, and oligodendrocytes, which differentiate from common multipotent neural stem/precursor cells (NS/PCs). However, NS/PCs do not have this multipotentiality from the beginning: neurons are generated first and astrocytes are later during CNS development. This developmental progression is observed in vitro by using human (h) NS/PCs derived from pluripotent cells, such as embryonic- and induced pluripotent-stem cells (ES/iPSCs), however, in contrast to rodent's pluripotent cells, they require quite long time to obtain astrocytic differentiation potential. Here, we show that hypoxia confers astrocytic differentiation potential on hNS/PCs through epigenetic alteration for gene regulation. Furthermore, we found that these molecular mechanisms can be applied to functional analysis of patient' iPSC-derived astrocytes. In this review, we summarize recent findings that address molecular mechanisms of epigenetic and transcription factor-mediated regulation that specify NS/PC fate and the development of potential therapeutic strategies for treating astrocyte-mediated neurological disorders.
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Affiliation(s)
- Tetsuro Yasui
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University
| | - Kinichi Nakashima
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University
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27
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Derivation of Neural Stem Cells from the Developing and Adult Human Brain. Results Probl Cell Differ 2019. [PMID: 30209653 DOI: 10.1007/978-3-319-93485-3_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Neural stem cells isolated from the developing and adult brain are an ideal source of cells for use in clinical applications such as cell replacement therapy. The clear advantage of these cells over the more commonly utilised embryonic and pluripotent stem cells is that they are already neurally committed. Of particular importance is the fact that these cells don't require the same level of in vitro culture that can be cost and labour intensive. Foetal neural stem cells can be readily derived from the foetal brain and expand in culture over time. Similarly, adult stem cells have been explored for their potential in vitro and in vivo animal models. In this chapter we identify the progress made in developing these cells as well as the advantages of taking them forward for clinical use.
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28
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Taylor AC, González CH, Ferretti P, Jackman RB. Spontaneous Differentiation of Human Neural Stem Cells on Nanodiamonds. ACTA ACUST UNITED AC 2019; 3:e1800299. [PMID: 32627432 DOI: 10.1002/adbi.201800299] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 01/28/2019] [Indexed: 12/17/2022]
Abstract
The potential use of stem cells in regenerative medicine requires the ability to be able to control stem cell fate as cellular networks are developed. Here, nanodiamonds (≈10 nm) are supported on glass and shown to be an excellent host for the attachment and proliferation of human neural stem cells. Moreover, it is shown that spontaneous differentiation into neurons occurs on nanodiamonds. The use of variously oxygen terminated and hydrogen terminated nanodiamonds has been explored. It is shown that O-ND monolayers promote the differentiation of human neural stem cells into neurons with increased total neurite length, degree of branching, and density of neurites when compared with H-NDs or the glass control. The total number of neurites and total neurite length expressing MAP2, a protein enriched in dendrites, is over five times higher for spontaneously differentiated neurones on the O-NDs compared to the control. The fact that inexpensive nanodiamonds can be attached through simple sonication from water on 2D and 3D shapes indicates significant promise for their potential as biomaterials in which neuro-regenerative diseases can be studied.
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Affiliation(s)
- Alice C Taylor
- London Centre for Nanotechnology and Department of Electronic and Electrical Engineering, University College London, 17-19 Gordon Street, London, WC1H 0AH, UK
| | - Citlali Helenes González
- Stem Cell and Regenerative Medicine Section, UCL Institute of Child Health, University College London, 30 Guilford Street, London, WC1N 1EH, UK
| | - Patrizia Ferretti
- Stem Cell and Regenerative Medicine Section, UCL Institute of Child Health, University College London, 30 Guilford Street, London, WC1N 1EH, UK
| | - Richard B Jackman
- London Centre for Nanotechnology and Department of Electronic and Electrical Engineering, University College London, 17-19 Gordon Street, London, WC1H 0AH, UK
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29
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Baker EW, Kinder HA, West FD. Neural stem cell therapy for stroke: A multimechanistic approach to restoring neurological function. Brain Behav 2019; 9:e01214. [PMID: 30747485 PMCID: PMC6422715 DOI: 10.1002/brb3.1214] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 12/02/2018] [Accepted: 12/18/2018] [Indexed: 12/14/2022] Open
Abstract
INTRODUCTION Neural stem cells (NSCs) have demonstrated multimodal therapeutic function for stroke, which is the leading cause of long-term disability and the second leading cause of death worldwide. In preclinical stroke models, NSCs have been shown to modulate inflammation, foster neuroplasticity and neural reorganization, promote angiogenesis, and act as a cellular replacement by differentiating into mature neural cell types. However, there are several key technical questions to address before NSC therapy can be applied to the clinical setting on a large scale. PURPOSE OF REVIEW In this review, we will discuss the various sources of NSCs, their therapeutic modes of action to enhance stroke recovery, and considerations for the clinical translation of NSC therapies. Understanding the key factors involved in NSC-mediated tissue recovery and addressing the current translational barriers may lead to clinical success of NSC therapy and a first-in-class restorative therapy for stroke patients.
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Affiliation(s)
- Emily W Baker
- Regenerative Bioscience Center, University of Georgia, Athens, Georgia.,Department of Animal and Dairy Science, University of Georgia, Athens, Georgia
| | - Holly A Kinder
- Regenerative Bioscience Center, University of Georgia, Athens, Georgia.,Department of Animal and Dairy Science, University of Georgia, Athens, Georgia
| | - Franklin D West
- Regenerative Bioscience Center, University of Georgia, Athens, Georgia.,Department of Animal and Dairy Science, University of Georgia, Athens, Georgia
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30
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Shin JE, Han J, Lim JH, Eun HS, Park KI. Human Neural Stem Cells: Translational Research for Neonatal Hypoxic-Ischemic Brain Injury. NEONATAL MEDICINE 2019. [DOI: 10.5385/nm.2019.26.1.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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31
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Zhao X, Bhattacharyya A. Human Models Are Needed for Studying Human Neurodevelopmental Disorders. Am J Hum Genet 2018; 103:829-857. [PMID: 30526865 DOI: 10.1016/j.ajhg.2018.10.009] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 10/09/2018] [Indexed: 12/19/2022] Open
Abstract
The analysis of animal models of neurological disease has been instrumental in furthering our understanding of neurodevelopment and brain diseases. However, animal models are limited in revealing some of the most fundamental aspects of development, genetics, pathology, and disease mechanisms that are unique to humans. These shortcomings are exaggerated in disorders that affect the brain, where the most significant differences between humans and animal models exist, and could underscore failures in targeted therapeutic interventions in affected individuals. Human pluripotent stem cells have emerged as a much-needed model system for investigating human-specific biology and disease mechanisms. However, questions remain regarding whether these cell-culture-based models are sufficient or even necessary. In this review, we summarize human-specific features of neurodevelopment and the most common neurodevelopmental disorders, present discrepancies between animal models and human diseases, demonstrate how human stem cell models can provide meaningful information, and discuss the challenges that exist in our pursuit to understand distinctively human aspects of neurodevelopment and brain disease. This information argues for a more thoughtful approach to disease modeling through consideration of the valuable features and limitations of each model system, be they human or animal, to mimic disease characteristics.
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Affiliation(s)
- Xinyu Zhao
- Waisman Center, School of Medicine and Public Health, University of Wisconsin-Madison, Madison WI 53705, USA; Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison WI 53705, USA.
| | - Anita Bhattacharyya
- Waisman Center, School of Medicine and Public Health, University of Wisconsin-Madison, Madison WI 53705, USA; Department of Cell and Regenerative Biology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison WI 53705, USA.
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32
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Yeon JY, Hwang JY, Lee HW, Pyeon HJ, Won JS, Noh YJ, Nam H, Joo KM. Optimized Clump Culture Methods for Adult Human Multipotent Neural Cells. Int J Mol Sci 2018; 19:ijms19113380. [PMID: 30380605 PMCID: PMC6274905 DOI: 10.3390/ijms19113380] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 10/24/2018] [Accepted: 10/25/2018] [Indexed: 12/30/2022] Open
Abstract
Adult human multipotent neural cell (ahMNC) is a candidate for regeneration therapy for neurodegenerative diseases. Here, we developed a primary clump culture method for ahMNCs to increase the efficiency of isolation and in vitro expansion. The same amount of human temporal lobe (1 g) was partially digested and then filtered through strainers with various pore sizes, resulting in four types of clumps: Clump I > 100 µm, 70 µm < Clump II < 100 µm, 40 µm < Clump III < 70 µm, and Clump IV < 40 µm. At 3 and 6 days after culture, Clump II showed significantly higher number of colonies than the other Clumps. Moreover, ahMNCs derived from Clump II (ahMNCs-Clump II) showed stable proliferation, and shortened the time to first passage from 19 to 15 days, and the time to 1 × 109 cells from 42 to 34 days compared with the previous single-cell method. ahMNCs-Clump II had neural differentiation and pro-angiogenic potentials, which are the characteristics of ahMNCs. In conclusion, the novel clump culture method for ahMNCs has significantly higher efficiency than previous techniques. Considering the small amount of available human brain tissue, the clump culture method would promote further clinical applications of ahMNCs.
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Affiliation(s)
- Je Young Yeon
- Department of Neurosurgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Korea.
- Stem Cell and Regenerative Medicine Center, Research Institute for Future Medicine, Samsung Medical Center, Seoul 06351, Korea.
| | - Ji-Yoon Hwang
- Stem Cell and Regenerative Medicine Center, Research Institute for Future Medicine, Samsung Medical Center, Seoul 06351, Korea.
- Department of Anatomy & Cell Biology, Sungkyunkwan University School of Medicine, Suwon 16419, Korea.
- Single Cell Network Research Center, Sungkyunkwan University School of Medicine, Suwon 16419, Korea.
| | - Hye Won Lee
- Department of Anatomy & Cell Biology, Sungkyunkwan University School of Medicine, Suwon 16419, Korea.
- Single Cell Network Research Center, Sungkyunkwan University School of Medicine, Suwon 16419, Korea.
| | - Hee-Jang Pyeon
- Stem Cell and Regenerative Medicine Center, Research Institute for Future Medicine, Samsung Medical Center, Seoul 06351, Korea.
- Department of Anatomy & Cell Biology, Sungkyunkwan University School of Medicine, Suwon 16419, Korea.
- Single Cell Network Research Center, Sungkyunkwan University School of Medicine, Suwon 16419, Korea.
| | - Jeong-Seob Won
- Stem Cell and Regenerative Medicine Center, Research Institute for Future Medicine, Samsung Medical Center, Seoul 06351, Korea.
- Single Cell Network Research Center, Sungkyunkwan University School of Medicine, Suwon 16419, Korea.
- Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul 06351, Korea.
| | - Yoo-Jung Noh
- Stem Cell and Regenerative Medicine Center, Research Institute for Future Medicine, Samsung Medical Center, Seoul 06351, Korea.
- Department of Anatomy & Cell Biology, Sungkyunkwan University School of Medicine, Suwon 16419, Korea.
- Single Cell Network Research Center, Sungkyunkwan University School of Medicine, Suwon 16419, Korea.
| | - Hyun Nam
- Stem Cell and Regenerative Medicine Center, Research Institute for Future Medicine, Samsung Medical Center, Seoul 06351, Korea.
- Department of Anatomy & Cell Biology, Sungkyunkwan University School of Medicine, Suwon 16419, Korea.
- Single Cell Network Research Center, Sungkyunkwan University School of Medicine, Suwon 16419, Korea.
| | - Kyeung Min Joo
- Stem Cell and Regenerative Medicine Center, Research Institute for Future Medicine, Samsung Medical Center, Seoul 06351, Korea.
- Department of Anatomy & Cell Biology, Sungkyunkwan University School of Medicine, Suwon 16419, Korea.
- Single Cell Network Research Center, Sungkyunkwan University School of Medicine, Suwon 16419, Korea.
- Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul 06351, Korea.
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33
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Liu Y, Antonic A, Yang X, Korte N, Lim K, Michalska AE, Dottori M, Howells DW. Derivation of phenotypically diverse neural culture from hESC by combining adherent and dissociation methods. J Neurosci Methods 2018; 308:286-293. [PMID: 30003885 DOI: 10.1016/j.jneumeth.2018.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2018] [Revised: 07/05/2018] [Accepted: 07/05/2018] [Indexed: 11/18/2022]
Abstract
BACKGROUND Differentiation of human embryonic stem cells (hESCs) into distinct neural lineages has been widely studied. However, preparation of mixed yet neurochemically mature populations, for the study of neurological diseases involving mixed cell types has received less attention. NEW METHOD We combined two commonly used differentiation methods to provide robust and reproducible cultures in which a mixture of primarily GABAergic and Glutamatergic neurons was obtained. Detailed characterisation by immunocytochemistry (ICC) and quantitative real-time PCR (qPCR) assessed the neurochemical phenotype, and the maturation state of these neurons. RESULTS We found that once neurospheres (NSs) had attached to the culture plates, proliferation of neural stem cell was suppressed. Neuronal differentiation and synaptic development then occurred after 21 days in vitro (DIV). By 49DIV, there were large numbers of neurochemically and structurally mature neurons. The qPCR studies indicated that expression of GABAergic genes increased the most (93.3-fold increase), followed by glutamatergic (51-fold increase), along with smaller changes in expression of cholinergic (3-fold increase) and dopaminergic genes (6-fold increase), as well as a small change in glial cell marker expression (5-fold increase). COMPARISON WITH EXISTING METHOD (S) Existing methods isolate hESC-derived neural progenitors for onward differentiation to mature neurons using either migration or dissociative paradigms. These give poor survival or yield. By combining these approaches, we obtain high yields of morphologically and neurochemically mature neurons. These can be maintained in culture for extended periods. CONCLUSION Our method provides a novel, effective and robust neural culture system with structurally and neurochemically mature cell populations and neural networks, suitable for studying a range of neurological diseases from a human perspective.
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Affiliation(s)
- Ye Liu
- Florey Institute of Neuroscience and Mental Health, 30 Royal Parade, The University of Melbourne, Victoria, 3010, Australia; Department of Neurology, Fudan University, Huashan Hospital, Shanghai, 200040, China
| | - Ana Antonic
- Department of Neuroscience, Central Clinical School, Monash University, The Alfred Centre, VIC, 3004, Australia
| | - Xuan Yang
- Institute for Geriatrics and Rehabilitation, Beijing Geriatric Hospital, Beijing, 100095, China
| | - Nils Korte
- Department of Neuroscience, Physiology and Pharmacology, University College London, Gower Street, London, WC1E6BT, UK
| | - Katherine Lim
- Stem Cell Core Facility, Stem Cells Australia, The University of Melbourne, Victoria, 3010, Australia
| | - Anna E Michalska
- Stem Cell Core Facility, Stem Cells Australia, The University of Melbourne, Victoria, 3010, Australia
| | - Mirella Dottori
- Illawarra Health and Medical Research Institute Centre for Molecular and Medical Bioscience Building 32, University of Wollongong, NSW, 2522 Australia
| | - David W Howells
- School of Medicine, University of Tasmania, Hobart, Tasmania, 7001, Australia.
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Wang L, Schlagal CR, Gao J, Hao Y, Dunn TJ, McGrath EL, Labastida JA, Yu Y, Feng SQ, Liu SY, Wu P. Oligodendrocyte differentiation from human neural stem cells: A novel role for c-Src. Neurochem Int 2018; 120:21-32. [PMID: 30041015 DOI: 10.1016/j.neuint.2018.07.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 06/28/2018] [Accepted: 07/18/2018] [Indexed: 01/06/2023]
Abstract
Human neural stem cells (hNSCs) can differentiate into an oligodendrocyte lineage to facilitate remyelination in patients. Molecular mechanisms underlying oligodendrocyte fate specification remains unknown, hindering the development of efficient methods to generate oligodendrocytes from hNSCs. We have found that Neurobasal-A medium (NB) is capable of inducing hNSCs to oligodendrocyte progenitor cells (OPCs). We identified several signaling molecules are altered after cultivation in NB medium, including Akt, ERK1/2 and c-Src. While sustained activation of Akt and ERK1/2 during both NB induction and subsequent differentiation was required for OPC differentiation, c-Src phosphorylation was increased temporally during the period of NB induction. Both pharmacological inhibition and RNA interference confirmed that a transient elevation of phospho-c-Src is critical for OPC induction. Furthermore, inactivation of c-Src inhibited phosphorylation of Akt and ERK1/2. In summary, we identified a novel and critical role of c-Src in guiding hNSC differentiation to an oligodendrocyte lineage.
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Affiliation(s)
- Le Wang
- Department of Neuroscience, Cell Biology and Anatomy, University of Texas Medical Branch, 301 University Blvd, Galveston, TX, 77555, USA; Department of Spine Surgery, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan Er Rd, Yuexiu Qu, Guangzhou Shi, Guangdong Sheng, China
| | - Caitlin R Schlagal
- Department of Neuroscience, Cell Biology and Anatomy, University of Texas Medical Branch, 301 University Blvd, Galveston, TX, 77555, USA
| | - Junling Gao
- Department of Neuroscience, Cell Biology and Anatomy, University of Texas Medical Branch, 301 University Blvd, Galveston, TX, 77555, USA
| | - Yan Hao
- Department of Neuroscience, Cell Biology and Anatomy, University of Texas Medical Branch, 301 University Blvd, Galveston, TX, 77555, USA; Department of Orthopedics, Tianjin Medical University General Hospital, 154 Anshan Rd, Heping Qu, 300051, China
| | - Tiffany J Dunn
- Department of Neuroscience, Cell Biology and Anatomy, University of Texas Medical Branch, 301 University Blvd, Galveston, TX, 77555, USA
| | - Erica L McGrath
- Department of Neuroscience, Cell Biology and Anatomy, University of Texas Medical Branch, 301 University Blvd, Galveston, TX, 77555, USA
| | - Javier Allende Labastida
- Department of Neuroscience, Cell Biology and Anatomy, University of Texas Medical Branch, 301 University Blvd, Galveston, TX, 77555, USA
| | - Yongjia Yu
- Department of Radiation Oncology, University of Texas Medical Branch, 301 University Blvd, Galveston, TX, 77555, USA
| | - Shi-Qing Feng
- Department of Orthopedics, Tianjin Medical University General Hospital, 154 Anshan Rd, Heping Qu, 300051, China
| | - Shao-Yu Liu
- Department of Spine Surgery, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan Er Rd, Yuexiu Qu, Guangzhou Shi, Guangdong Sheng, China
| | - Ping Wu
- Department of Neuroscience, Cell Biology and Anatomy, University of Texas Medical Branch, 301 University Blvd, Galveston, TX, 77555, USA.
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35
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Hawkins SJ, Crompton LA, Sood A, Saunders M, Boyle NT, Buckley A, Minogue AM, McComish SF, Jiménez-Moreno N, Cordero-Llana O, Stathakos P, Gilmore CE, Kelly S, Lane JD, Case CP, Caldwell MA. Nanoparticle-induced neuronal toxicity across placental barriers is mediated by autophagy and dependent on astrocytes. NATURE NANOTECHNOLOGY 2018; 13:427-433. [PMID: 29610530 DOI: 10.1038/s41565-018-0085-3] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Accepted: 01/31/2018] [Indexed: 05/05/2023]
Abstract
The potential for maternal nanoparticle (NP) exposures to cause developmental toxicity in the fetus without the direct passage of NPs has previously been shown, but the mechanism remained elusive. We now demonstrate that exposure of cobalt and chromium NPs to BeWo cell barriers, an in vitro model of the human placenta, triggers impairment of the autophagic flux and release of interleukin-6. This contributes to the altered differentiation of human neural progenitor cells and DNA damage in the derived neurons and astrocytes. Crucially, neuronal DNA damage is mediated by astrocytes. Inhibiting the autophagic degradation in the BeWo barrier by overexpression of the dominant-negative human ATG4BC74A significantly reduces the levels of DNA damage in astrocytes. In vivo, indirect NP toxicity in mice results in neurodevelopmental abnormalities with reactive astrogliosis and increased DNA damage in the fetal hippocampus. Our results demonstrate the potential importance of autophagy to elicit NP toxicity and the risk of indirect developmental neurotoxicity after maternal NP exposure.
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Affiliation(s)
- Simon J Hawkins
- Regenerative Medicine Laboratory, School of Clinical Sciences, University of Bristol, Bristol, UK
- Musculoskeletal Research Unit, School of Clinical Sciences, University of Bristol, Bristol, UK
| | - Lucy A Crompton
- Regenerative Medicine Laboratory, School of Clinical Sciences, University of Bristol, Bristol, UK
- Cell Biology Laboratories, School of Biochemistry, University of Bristol, Bristol, UK
| | - Aman Sood
- Musculoskeletal Research Unit, School of Clinical Sciences, University of Bristol, Bristol, UK
| | - Margaret Saunders
- Cell Biology Laboratories, School of Biochemistry, University of Bristol, Bristol, UK
- Department of Medical Physics & Bioengineering, St Michael's Hospital, University Hospitals Bristol NHS Foundation Trust, Bristol, UK
| | - Noreen T Boyle
- Trinity College Institute of Neuroscience, Department of Physiology, Trinity College Dublin, Dublin, Ireland
| | - Amy Buckley
- Trinity College Institute of Neuroscience, Department of Physiology, Trinity College Dublin, Dublin, Ireland
| | - Aedín M Minogue
- Trinity College Institute of Neuroscience, Department of Physiology, Trinity College Dublin, Dublin, Ireland
| | - Sarah F McComish
- Trinity College Institute of Neuroscience, Department of Physiology, Trinity College Dublin, Dublin, Ireland
| | | | - Oscar Cordero-Llana
- Regenerative Medicine Laboratory, School of Clinical Sciences, University of Bristol, Bristol, UK
| | - Petros Stathakos
- Regenerative Medicine Laboratory, School of Clinical Sciences, University of Bristol, Bristol, UK
- Cell Biology Laboratories, School of Biochemistry, University of Bristol, Bristol, UK
| | - Catherine E Gilmore
- Musculoskeletal Research Unit, School of Clinical Sciences, University of Bristol, Bristol, UK
| | - Stephen Kelly
- Neuroscience Institute @JFK Medical Center, Edison, NJ, USA
| | - Jon D Lane
- Cell Biology Laboratories, School of Biochemistry, University of Bristol, Bristol, UK
| | - C Patrick Case
- Musculoskeletal Research Unit, School of Clinical Sciences, University of Bristol, Bristol, UK
| | - Maeve A Caldwell
- Trinity College Institute of Neuroscience, Department of Physiology, Trinity College Dublin, Dublin, Ireland.
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36
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Kim M, Jung K, Kim IS, Lee IS, Ko Y, Shin JE, Park KI. TNF-α induces human neural progenitor cell survival after oxygen-glucose deprivation by activating the NF-κB pathway. Exp Mol Med 2018; 50:1-14. [PMID: 29622770 PMCID: PMC5938012 DOI: 10.1038/s12276-018-0033-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Revised: 11/14/2017] [Accepted: 12/05/2017] [Indexed: 11/21/2022] Open
Abstract
Neural progenitor cell (NPC) transplantation has been shown to be beneficial in the ischemic brain. However, the low survival rate of transplanted NPCs in an ischemic microenvironment limits their therapeutic effects. Tumor necrosis factor-alpha (TNF-α) is one of the proinflammatory cytokines involved in the pathogenesis of various injuries. On the other hand, several studies have shown that TNF-α influences the proliferation, survival, and differentiation of NPCs. Our study investigated the effect of TNF-α pretreatment on human NPCs (hNPCs) under ischemia-related conditions in vitro. hNPCs harvested from fetal brain tissue were pretreated with TNF-α before being subjected to oxygen–glucose deprivation (OGD) to mimic ischemia in vitro. TNF-α pretreatment improved the viability and reduced the apoptosis of hNPCs after OGD. At the molecular level, TNF-α markedly increased the level of NF-κB signaling in hNPCs, and an NF-κB pathway inhibitor, BAY11-7082, completely reversed the protective effects of TNF-α on hNPCs. These results suggest that TNF-α improves hNPC survival by activating the NF-κB pathway. In addition, TNF-α significantly enhanced the expression of cellular inhibitor of apoptosis 2 (cIAP2). Use of a lentivirus-mediated short hairpin RNA targeting cIAP2 mRNA demonstrated that cIAP2 protected against OGD-induced cytotoxicity in hNPCs. Our study of intracellular NF-κB signaling revealed that inhibition of NF-κB activity abolished the TNF-α-mediated upregulation of cIAP2 in hNPCs and blocked TNF-α-induced cytoprotection against OGD. Therefore, this study suggests that TNF-α pretreatment, which protects hNPCs from OGD-induced apoptosis by activating the NF-κB pathway, provides a safe and simple approach to improve the viability of transplanted hNPCs in cerebral ischemia. A potent “survival signal” for brain stem cells could enable effective regenerative therapies for stroke patients. Neural progenitor cells (NPCs) can develop into functional neurons and supportive glial cells, and researchers are tantalized by the prospect of using NPCs to repair damaged brain tissue. NPCs generally fail to flourish after transplantation, but a team led by Kook In Park at Yonsei University College of Medicine, South Korea, have found a signaling factor that helps these cells to survive and divide. Tumor necrosis factor-α (TNF-α) is associated with inflammation, but also protects neurons after a stroke. The researchers showed that pretreatment with TNF-α preserved NPCs exposed to starvation and oxygen-deprivation conditions in cell culture by activating critical cell survival pathways. These findings suggest that TNF-α may enable NPCs to survive long enough to repair post-stroke neurological damage.
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Affiliation(s)
- Miri Kim
- Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, Seoul, 03722, Korea
| | - Kwangsoo Jung
- Yonsei Biomedical Research Institute, Yonsei University College of Medicine, Seoul, 03722, Korea
| | - Il-Sun Kim
- Yonsei Biomedical Research Institute, Yonsei University College of Medicine, Seoul, 03722, Korea
| | - Il-Shin Lee
- Yonsei Biomedical Research Institute, Yonsei University College of Medicine, Seoul, 03722, Korea
| | - Younhee Ko
- Division of Biomedical Engineering, Hankuk University of Foreign Studies, Yongin, 17035, Korea
| | - Jeong Eun Shin
- Department of Pediatrics, Severance Children's Hospital, Yonsei University College of Medicine, Seoul, 03722, Korea
| | - Kook In Park
- Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, Seoul, 03722, Korea. .,Yonsei Biomedical Research Institute, Yonsei University College of Medicine, Seoul, 03722, Korea. .,Department of Pediatrics, Severance Children's Hospital, Yonsei University College of Medicine, Seoul, 03722, Korea.
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37
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Hu W, Lu H, Wang S, Yin W, Liu X, Dong L, Chiu R, Shen L, Lu WJ, Lan F. Suppression of Nestin reveals a critical role for p38-EGFR pathway in neural progenitor cell proliferation. Oncotarget 2018; 7:87052-87063. [PMID: 27894083 PMCID: PMC5349970 DOI: 10.18632/oncotarget.13498] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 10/14/2016] [Indexed: 12/19/2022] Open
Abstract
The expression of intermediate filament Nestin is necessary for the neural progenitor cells (NPCs) to maintain stemness, but the underlying cellular and molecular mechanism remains unclear. In this study, we demonstrated that Nestin is required for the self-renew of NPCs through activating MAPK and EGFR pathways. Knockdown of Nestin by shRNA inhibited cell cycle progression and proliferation in mouse NPCs. Moreover, suppression of Nestin reduced expression of the epidermal growth factor receptor (EGFR) in NPCs and inhibited the mitogenic effects of EGF on these cells. Treatment of NPCs with p38-MAPK inhibitor PD169316 reversed cell cycle arrest caused by the knockdown of Nestin. Our findings indicate that Nestin promotes NPC proliferation via p38-MAPK and EGFR pathways, and reveals the necessity of these pathways in NPCs self-renewal.
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Affiliation(s)
- Wentao Hu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Hong Lu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Shang Wang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Wenhan Yin
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Xujie Liu
- Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, China.,Beijing Lab for Cardiovascular Precision Medicine, Capital Medical University, Beijing, China.,The Key Laboratory of Remodeling-Related Cardiovascular Disease, Ministry of Education, Beijing, China.,Beijing Collaborative Innovation Center for Cardiovascular Disorders, Anzhen Hospital, Capital Medical University, Beijing, China.,Deparment of Radiological Medicine, Chongqing Medical University, Chongqing, China
| | - Lin Dong
- Department of Cell Biology Peking University Health Science Center, Beijing, China
| | - Richard Chiu
- Deparment of Radiology, Stanford University School of Medicine, Stanford, California, USA
| | - Li Shen
- Department of Cell Biology Peking University Health Science Center, Beijing, China
| | - Wen-Jing Lu
- Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, China.,Beijing Lab for Cardiovascular Precision Medicine, Capital Medical University, Beijing, China.,The Key Laboratory of Remodeling-Related Cardiovascular Disease, Ministry of Education, Beijing, China.,Beijing Collaborative Innovation Center for Cardiovascular Disorders, Anzhen Hospital, Capital Medical University, Beijing, China
| | - Feng Lan
- Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, China.,Beijing Lab for Cardiovascular Precision Medicine, Capital Medical University, Beijing, China.,The Key Laboratory of Remodeling-Related Cardiovascular Disease, Ministry of Education, Beijing, China.,Beijing Collaborative Innovation Center for Cardiovascular Disorders, Anzhen Hospital, Capital Medical University, Beijing, China
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38
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McGrath EL, Gao J, Wu P. Zika Virus Infection of Cultured Human Fetal Brain Neural Stem Cells for Immunocytochemical Analysis. J Vis Exp 2018. [PMID: 29443111 DOI: 10.3791/56917] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Human fetal brain neural stem cells are a unique non-genetically modified model system to study the impact of various stimuli on human developmental neurobiology. Rather than use an animal model or genetically modified induced pluripotent cells, human neural stem cells provide an effective in vitro system to examine the effects of treatments, screen drugs, or examine individual differences. Here, we provide the detailed protocols for methods used to expand human fetal brain neural stem cells in culture with serum-free media, to differentiate them into various neuronal subtypes and astrocytes via different priming procedures, and to freeze and recover these cells. Furthermore, we describe a procedure of using human fetal brain neural stem cells to study Zika virus infection.
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Affiliation(s)
- Erica L McGrath
- Department of Neuroscience and Cell Biology, University of Texas Medical Branch; Department of Neurology, Johns Hopkins University
| | - Junling Gao
- Department of Neuroscience and Cell Biology, University of Texas Medical Branch
| | - Ping Wu
- Department of Neuroscience and Cell Biology, University of Texas Medical Branch; Beijing Institute for Brain Disorders, Capital Medical University;
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39
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Yasui T, Uezono N, Nakashima H, Noguchi H, Matsuda T, Noda-Andoh T, Okano H, Nakashima K. Hypoxia Epigenetically Confers Astrocytic Differentiation Potential on Human Pluripotent Cell-Derived Neural Precursor Cells. Stem Cell Reports 2018; 8:1743-1756. [PMID: 28591654 PMCID: PMC5470174 DOI: 10.1016/j.stemcr.2017.05.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 05/01/2017] [Accepted: 05/01/2017] [Indexed: 12/22/2022] Open
Abstract
Human neural precursor cells (hNPCs) derived from pluripotent stem cells display a high propensity for neuronal differentiation, but they require long-term culturing to differentiate efficiently into astrocytes. The mechanisms underlying this biased fate specification of hNPCs remain elusive. Here, we show that hypoxia confers astrocytic differentiation potential on hNPCs through epigenetic gene regulation, and that this was achieved by cooperation between hypoxia-inducible factor 1α and Notch signaling, accompanied by a reduction of DNA methylation level in the promoter region of a typical astrocyte-specific gene, Glial fibrillary acidic protein. Furthermore, we found that this hypoxic culture condition could be applied to rapid generation of astrocytes from Rett syndrome patient-derived hNPCs, and that these astrocytes impaired neuronal development. Thus, our findings shed further light on the molecular mechanisms regulating hNPC differentiation and provide attractive tools for the development of therapeutic strategies for treating astrocyte-mediated neurological disorders.
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Affiliation(s)
- Tetsuro Yasui
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka 812-8582, Japan; Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka 812-8582, Japan
| | - Naohiro Uezono
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka 812-8582, Japan
| | - Hideyuki Nakashima
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka 812-8582, Japan
| | - Hirofumi Noguchi
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka 812-8582, Japan
| | - Taito Matsuda
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka 812-8582, Japan
| | - Tomoko Noda-Andoh
- Department of Physiology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Hideyuki Okano
- Department of Physiology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Kinichi Nakashima
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka 812-8582, Japan; Laboratory of Molecular Neuroscience, Graduate School of Biological Sciences, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan.
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40
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Gao J, Grill RJ, Dunn TJ, Bedi S, Labastida JA, Hetz RA, Xue H, Thonhoff JR, DeWitt DS, Prough DS, Cox CS, Wu P. Human Neural Stem Cell Transplantation-Mediated Alteration of Microglial/Macrophage Phenotypes after Traumatic Brain Injury. Cell Transplant 2018; 25:1863-1877. [PMID: 26980267 DOI: 10.3727/096368916x691150] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Neural stem cells (NSCs) promote recovery from brain trauma, but neuronal replacement is unlikely the sole underlying mechanism. We hypothesize that grafted NSCs enhance neural repair at least partially through modulating the host immune response after traumatic brain injury (TBI). C57BL/6 mice were intracerebrally injected with primed human NSCs (hNSCs) or vehicle 24 h after a severe controlled cortical impact injury. Six days after transplantation, brain tissues were collected for Western blot and immunohistochemical analyses. Observations included indicators of microglia/macrophage activation, M1 and M2 phenotypes, axonal injury detected by amyloid precursor protein (APP), lesion size, and the fate of grafted hNSCs. Animals receiving hNSC transplantation did not show significant decreases of brain lesion volumes compared to transplantation procedures with vehicle alone, but did show significantly reduced injury-dependent accumulation of APP. Furthermore, intracerebral transplantation of hNSCs reduced microglial activation as shown by a diminished intensity of Iba1 immunostaining and a transition of microglia/macrophages toward the M2 anti-inflammatory phenotype. The latter was represented by an increase in the brain M2/M1 ratio and increases of M2 microglial proteins. These phenotypic switches were accompanied by the increased expression of anti-inflammatory interleukin-4 receptor α and decreased proinflammatory interferon-γ receptor β. Finally, grafted hNSCs mainly differentiated into neurons and were phagocytized by either M1 or M2 microglia/macrophages. Thus, intracerebral transplantation of primed hNSCs efficiently leads host microglia/macrophages toward an anti-inflammatory phenotype that presumably contributes to stem cell-mediated neuroprotective effects after severe TBI in mice.
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Affiliation(s)
- Junling Gao
- Department of Neuroscience and Cell Biology, University of Texas Medical Branch at Galveston, Galveston, TX, USA
| | - Raymond J Grill
- Department of Integrative Biology and Pharmacology, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Tiffany J Dunn
- Department of Neuroscience and Cell Biology, University of Texas Medical Branch at Galveston, Galveston, TX, USA
| | - Supinder Bedi
- Department of Pediatric Surgery, University of Texas Medical School at Houston, Houston, TX, USA
| | - Javier Allende Labastida
- Department of Neuroscience and Cell Biology, University of Texas Medical Branch at Galveston, Galveston, TX, USA
| | - Robert A Hetz
- Department of Pediatric Surgery, University of Texas Medical School at Houston, Houston, TX, USA
| | - Hasen Xue
- Department of Pediatric Surgery, University of Texas Medical School at Houston, Houston, TX, USA
| | - Jason R Thonhoff
- Department of Neuroscience and Cell Biology, University of Texas Medical Branch at Galveston, Galveston, TX, USA
| | - Douglas S DeWitt
- Department of Anesthesiology, University of Texas Medical Branch at Galveston, TX, USA
| | - Donald S Prough
- Department of Anesthesiology, University of Texas Medical Branch at Galveston, TX, USA
| | - Charles S Cox
- Department of Pediatric Surgery, University of Texas Medical School at Houston, Houston, TX, USA
| | - Ping Wu
- Department of Neuroscience and Cell Biology, University of Texas Medical Branch at Galveston, Galveston, TX, USA.,Beijing Institute for Brain Disorders, Beijing, P.R. China
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41
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Gray KM, Kaifer KA, Baillat D, Wen Y, Bonacci TR, Ebert AD, Raimer AC, Spring AM, Have ST, Glascock JJ, Gupta K, Van Duyne GD, Emanuele MJ, Lamond AI, Wagner EJ, Lorson CL, Matera AG. Self-oligomerization regulates stability of survival motor neuron protein isoforms by sequestering an SCF Slmb degron. Mol Biol Cell 2018; 29:96-110. [PMID: 29167380 PMCID: PMC5909936 DOI: 10.1091/mbc.e17-11-0627] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 11/14/2017] [Indexed: 12/16/2022] Open
Abstract
Spinal muscular atrophy (SMA) is caused by homozygous mutations in human SMN1 Expression of a duplicate gene (SMN2) primarily results in skipping of exon 7 and production of an unstable protein isoform, SMNΔ7. Although SMN2 exon skipping is the principal contributor to SMA severity, mechanisms governing stability of survival motor neuron (SMN) isoforms are poorly understood. We used a Drosophila model system and label-free proteomics to identify the SCFSlmb ubiquitin E3 ligase complex as a novel SMN binding partner. SCFSlmb interacts with a phosphor degron embedded within the human and fruitfly SMN YG-box oligomerization domains. Substitution of a conserved serine (S270A) interferes with SCFSlmb binding and stabilizes SMNΔ7. SMA-causing missense mutations that block multimerization of full-length SMN are also stabilized in the degron mutant background. Overexpression of SMNΔ7S270A, but not wild-type (WT) SMNΔ7, provides a protective effect in SMA model mice and human motor neuron cell culture systems. Our findings support a model wherein the degron is exposed when SMN is monomeric and sequestered when SMN forms higher-order multimers.
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Affiliation(s)
- Kelsey M Gray
- Curriculum in Genetics and Molecular Biology and Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599
- Integrative Program in Biological and Genome Sciences, Department of Biology and Department of Genetics, University of North Carolina, Chapel Hill, NC 27599
| | - Kevin A Kaifer
- Molecular Pathogenesis and Therapeutics Program, Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211
| | - David Baillat
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX 77550
| | - Ying Wen
- Integrative Program in Biological and Genome Sciences, Department of Biology and Department of Genetics, University of North Carolina, Chapel Hill, NC 27599
| | - Thomas R Bonacci
- Curriculum in Genetics and Molecular Biology and Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599
- Department of Pharmacology, University of North Carolina, Chapel Hill, NC 27599
| | - Allison D Ebert
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, WI 53226
| | - Amanda C Raimer
- Curriculum in Genetics and Molecular Biology and Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599
- Integrative Program in Biological and Genome Sciences, Department of Biology and Department of Genetics, University of North Carolina, Chapel Hill, NC 27599
| | - Ashlyn M Spring
- Integrative Program in Biological and Genome Sciences, Department of Biology and Department of Genetics, University of North Carolina, Chapel Hill, NC 27599
| | - Sara Ten Have
- Centre for Gene Regulation and Expression, School of Life Sciences, University of Dundee, Dundee DD15EH, UK
| | - Jacqueline J Glascock
- Molecular Pathogenesis and Therapeutics Program, Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211
| | - Kushol Gupta
- Department of Biochemistry and Biophysics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104
| | - Gregory D Van Duyne
- Department of Biochemistry and Biophysics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104
| | - Michael J Emanuele
- Curriculum in Genetics and Molecular Biology and Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599
- Department of Pharmacology, University of North Carolina, Chapel Hill, NC 27599
| | - Angus I Lamond
- Centre for Gene Regulation and Expression, School of Life Sciences, University of Dundee, Dundee DD15EH, UK
| | - Eric J Wagner
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX 77550
| | - Christian L Lorson
- Molecular Pathogenesis and Therapeutics Program, Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211
| | - A Gregory Matera
- Curriculum in Genetics and Molecular Biology and Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599
- Integrative Program in Biological and Genome Sciences, Department of Biology and Department of Genetics, University of North Carolina, Chapel Hill, NC 27599
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42
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Sison SL, Patitucci TN, Seminary ER, Villalon E, Lorson CL, Ebert AD. Astrocyte-produced miR-146a as a mediator of motor neuron loss in spinal muscular atrophy. Hum Mol Genet 2018. [PMID: 28637335 DOI: 10.1093/hmg/ddx230] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Spinal muscular atrophy (SMA), the leading genetic cause of infant mortality, is caused by the loss of the survival motor neuron-1 (SMN1) gene, which leads to motor neuron loss, muscle atrophy, respiratory distress, and death. Motor neurons exhibit the most profound loss, but the mechanisms underlying disease pathogenesis are not fully understood. Recent evidence suggests that motor neuron extrinsic influences, such as those arising from astrocytes, contribute to motor neuron malfunction and loss. Here we investigated both loss-of-function and toxic gain-of-function astrocyte mechanisms that could play a role in SMA pathology. We had previously found that glial derived neurotrophic factor (GDNF) is reduced in SMA astrocytes. However, reduced GDNF expression does not play a major role in SMA pathology as viral-mediated GDNF re-expression did not improve astrocyte function or motor neuron loss. In contrast, we found that SMA astrocytes increased microRNA (miR) production and secretion compared to control astrocytes, suggesting potential toxic gain-of-function properties. Specifically, we found that miR-146a was significantly upregulated in SMA induced pluripotent stem cell (iPSC)-derived astrocytes and SMNΔ7 mouse spinal cord. Moreover, increased miR-146a was sufficient to induce motor neuron loss in vitro, whereas miR-146a inhibition prevented SMA astrocyte-induced motor neuron loss. Together, these data indicate that altered astrocyte production of miR-146a may be a contributing factor in astrocyte-mediated SMA pathology.
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Affiliation(s)
- Samantha L Sison
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, 53226 WI, USA
| | - Teresa N Patitucci
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, 53226 WI, USA
| | - Emily R Seminary
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, 53226 WI, USA
| | - Eric Villalon
- Department of Veterinary Pathobiology, Bond Life Sciences Center, University of Missouri, Columbia, 65211 MO, USA
| | - Christian L Lorson
- Department of Veterinary Pathobiology, Bond Life Sciences Center, University of Missouri, Columbia, 65211 MO, USA
| | - Allison D Ebert
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, 53226 WI, USA
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43
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Zorniak M, Clark PA, Umlauf BJ, Cho Y, Shusta EV, Kuo JS. Yeast display biopanning identifies human antibodies targeting glioblastoma stem-like cells. Sci Rep 2017; 7:15840. [PMID: 29158489 PMCID: PMC5696472 DOI: 10.1038/s41598-017-16066-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 11/07/2017] [Indexed: 01/01/2023] Open
Abstract
Glioblastoma stem-like cells (GSC) are hypothesized to evade current therapies and cause tumor recurrence, contributing to poor patient survival. Existing cell surface markers for GSC are developed from embryonic or neural stem cell systems; however, currently available GSC markers are suboptimal in sensitivity and specificity. We hypothesized that the GSC cell surface proteome could be mined with a yeast display antibody library to reveal novel immunophenotypes. We isolated an extensive collection of antibodies that were differentially selective for GSC. A single domain antibody VH-9.7 showed selectivity for five distinct patient-derived GSC lines and visualized orthotopic GBM xenografts in vivo after conjugation with a near-infrared dye. These findings demonstrate a previously unexplored high-throughput strategy for GSC-selective antibody discovery, to aid in GSC isolation, diagnostic imaging, and therapeutic targeting.
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Affiliation(s)
- Michael Zorniak
- Neuroscience Training Program, University of Wisconsin School of Medicine and Public Health, Madison, WI, 53792-8660, USA.,Department of Neurological Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI, 53792-8660, USA
| | - Paul A Clark
- Department of Neurological Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI, 53792-8660, USA
| | - Benjamin J Umlauf
- Department of Chemical and Biological Engineering, University of Wisconsin School of Medicine and Public Health, Madison, WI, 53792-8660, USA
| | - Yongku Cho
- Department of Chemical and Biological Engineering, University of Wisconsin School of Medicine and Public Health, Madison, WI, 53792-8660, USA
| | - Eric V Shusta
- Department of Chemical and Biological Engineering, University of Wisconsin School of Medicine and Public Health, Madison, WI, 53792-8660, USA. .,Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, WI, 53792-8660, USA.
| | - John S Kuo
- Neuroscience Training Program, University of Wisconsin School of Medicine and Public Health, Madison, WI, 53792-8660, USA. .,Department of Neurological Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI, 53792-8660, USA. .,Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, WI, 53792-8660, USA.
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44
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Shaheen S, Ahmed M, Lorenzi F, Nateri AS. Spheroid-Formation (Colonosphere) Assay for in Vitro Assessment and Expansion of Stem Cells in Colon Cancer. Stem Cell Rev Rep 2017; 12:492-9. [PMID: 27207017 PMCID: PMC4919387 DOI: 10.1007/s12015-016-9664-6] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Colorectal cancers (CRCs) form a disorganized hierarchy of heterogeneous cell populations on which current chemotherapy regimens fail to exert their distinctive cytotoxicity. A small sub-population of poorly differentiated cancer stem-like cells (CSCs), also known as cancer initiating cells, may exhibit embryonic and/or adult stem-cell gene expression signatures. Self-renewal and survival signals are also dominant over differentiation in CSCs. However, inducers of differentiation exclusive to CSC may affect cellular pathways required for the formation and progression of a tumor, which are not utilized in normal adult stem-cells. Nevertheless, assays for targeting CSCs have been hindered by expanding and maintaining rare CSCs in vitro. However, CRC-CSCs are able to form floating spheroids (known as colonospheres) 3-dimentinionally (3D) in a serum-free defined medium. Therefore, great efforts have been paid to improve colonosphere forming assay as a preclinical model to study tumor biology and to conduct drug screening in cancer research. The 3D-colonosphere culture model may also represent in vivo conditions for the spontaneous aggregation of cancer cells in spheroids. This protocol describes the development of an enrichment/culture assay using CRC-CSCs to facilitate colorectal cancer research through immunofluorescence staining of colonospheres. We have developed colonospheres from HCT116 CRC cell line to compare and link CRC-CSC markers to the NANOG expression level using an immunofluorescence assay. Our data also show that the immunostaining assay of colonosphere is a useful method to explore the role and dynamics of CRC-CSCs division between self-renewal and cell lineage differentiation of cancer cells. In principle, this method is applicable to a variety of primary cells and cell lines of epithelial origin. Furthermore, this protocol may also allow screening of libraries of compounds to identify bona fide CRC-CSC differentiation inducers.
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Affiliation(s)
- Sameerah Shaheen
- Cancer Genetics and Stem Cell Group, Cancer Biology Unit, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham, NG7 2UH, UK
| | - Mehreen Ahmed
- Cancer Genetics and Stem Cell Group, Cancer Biology Unit, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham, NG7 2UH, UK
| | - Federica Lorenzi
- Cancer Genetics and Stem Cell Group, Cancer Biology Unit, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham, NG7 2UH, UK
| | - Abdolrahman S Nateri
- Cancer Genetics and Stem Cell Group, Cancer Biology Unit, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham, NG7 2UH, UK.
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Hofrichter M, Nimtz L, Tigges J, Kabiri Y, Schröter F, Royer-Pokora B, Hildebrandt B, Schmuck M, Epanchintsev A, Theiss S, Adjaye J, Egly JM, Krutmann J, Fritsche E. Comparative performance analysis of human iPSC-derived and primary neural progenitor cells (NPC) grown as neurospheres in vitro. Stem Cell Res 2017; 25:72-82. [PMID: 29112887 DOI: 10.1016/j.scr.2017.10.013] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 10/17/2017] [Accepted: 10/23/2017] [Indexed: 02/07/2023] Open
Abstract
Developmental neurotoxicity (DNT) testing performed in rats is resource-intensive (costs, time, animals) and bears the issue of species extrapolation. Thus, reliable alternative human-based approaches are needed for predicting neurodevelopmental toxicity. Human induced pluripotent stem cells (hiPSCs) represent a basis for an alternative method possibly being part of an alternative DNT testing strategy. Here, we compared two hiPSC neural induction protocols resulting in 3D neurospheres: one using noggin and one cultivating cells in neural induction medium (NIM protocol). Performance of Nestin+/SOX2+ hiPSC-derived neural progenitor cells (NPCs) was compared to primary human NPCs. Generally, primary hNPCs first differentiate into Nestin+ and/or GFAP+ radial glia-like cells, while the hiPSC-derived NPCs (hiPSC-NPC) first differentiate into βIII-Tubulin+ neurons suggesting an earlier developmental stage of hiPSC-NPC. In the 'Neurosphere Assay', NIM generated hiPSC-NPC produced neurons with higher performance than with the noggin protocol. After long-term differentiation, hiPSC-NPC form neuronal networks, which become electrically active on microelectrode arrays after 85days. Finally, methylmercury chloride inhibits hiPSC-NPC and hNPC migration with similar potencies. hiPSC-NPCs-derived neurospheres seem to be useful for DNT evaluation representing early neural development in vitro. More system characterization by compound testing is needed to gain higher confidence in this method.
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Affiliation(s)
- Maxi Hofrichter
- IUF-Leibniz Research Institute for Environmental Medicine, Duesseldorf, Germany
| | - Laura Nimtz
- IUF-Leibniz Research Institute for Environmental Medicine, Duesseldorf, Germany
| | - Julia Tigges
- IUF-Leibniz Research Institute for Environmental Medicine, Duesseldorf, Germany
| | - Yaschar Kabiri
- IUF-Leibniz Research Institute for Environmental Medicine, Duesseldorf, Germany
| | - Friederike Schröter
- Institute for Stem Cell Research & Regenerative Medicine, Medical Faculty, Heinrich-Heine-University, Duesseldorf, Germany
| | - Brigitte Royer-Pokora
- Institute of Human Genetics, Medical Faculty, Heinrich-Heine University, Duesseldorf, Germany
| | - Barbara Hildebrandt
- Institute of Human Genetics, Medical Faculty, Heinrich-Heine University, Duesseldorf, Germany
| | - Martin Schmuck
- IUF-Leibniz Research Institute for Environmental Medicine, Duesseldorf, Germany
| | - Alexey Epanchintsev
- Department of Functional Genomics and Cancer, Institut de Génétique et de Biologie Moléculaire et Cellulaire: IGBMC, Centre National de la Recherche Scientifique, INSERUM, Université de Strasbourg, Strasbourg, France
| | - Stephan Theiss
- Institute of clinical neuroscience and medical psychology, Medical Faculty, Heinrich-Heine-University, Duesseldorf, Germany
| | - James Adjaye
- Institute for Stem Cell Research & Regenerative Medicine, Medical Faculty, Heinrich-Heine-University, Duesseldorf, Germany
| | - Jean-Marc Egly
- Department of Functional Genomics and Cancer, Institut de Génétique et de Biologie Moléculaire et Cellulaire: IGBMC, Centre National de la Recherche Scientifique, INSERUM, Université de Strasbourg, Strasbourg, France
| | - Jean Krutmann
- IUF-Leibniz Research Institute for Environmental Medicine, Duesseldorf, Germany; Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany
| | - Ellen Fritsche
- IUF-Leibniz Research Institute for Environmental Medicine, Duesseldorf, Germany; Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany.
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46
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Rindt H, Tom CM, Lorson CL, Mattis VB. Optimization of trans-Splicing for Huntington's Disease RNA Therapy. Front Neurosci 2017; 11:544. [PMID: 29066943 PMCID: PMC5641306 DOI: 10.3389/fnins.2017.00544] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 09/19/2017] [Indexed: 11/16/2022] Open
Abstract
Huntington's disease (HD) is a devastating neurodegenerative disorder caused by a polyglutamine (polyQ) expansion in exon 1 of the Huntingtin (HTT) gene. We have previously demonstrated that spliceosome-mediated trans-splicing is a viable molecular strategy to specifically reduce and repair mutant HTT (mtHTT). Here, the targeted tethering efficacy of the pre-mRNA trans-splicing modules (PTM) in HTT was optimized. Various PTMs that targeted the 3′ end of HTT intron 1 or the intron 1 branch point were shown trans-splice into an HTT mini-gene, as well as the endogenous HTT pre-mRNA. PTMs that specifically target the endogenous intron 1 branch point increased the trans-splicing efficacy from 1–5 to 10–15%. Furthermore, lentiviral expression of PTMs in a human HD patient iPSC-derived neural culture significantly reversed two previously established polyQ-length dependent phenotypes. These results suggest that pre-mRNA repair of mtHTT could hold therapeutic benefit and it demonstrates an alternative platform to correct the mRNA product produced by the mtHTT allele in the context of HD.
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Affiliation(s)
- Hansjörg Rindt
- Department of Veterinary Pathobiology, Bond Life Sciences Center, University of Missouri, Columbia, MO, United States
| | - Colton M Tom
- Cedars-Sinai Medical Center, Board of Governors Regenerative Medicine Institute, Los Angeles, CA, United States
| | - Christian L Lorson
- Department of Veterinary Pathobiology, Bond Life Sciences Center, University of Missouri, Columbia, MO, United States
| | - Virginia B Mattis
- Cedars-Sinai Medical Center, Board of Governors Regenerative Medicine Institute, Los Angeles, CA, United States
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47
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Microgravity influences maintenance of the human muscle stem/progenitor cell pool. Biochem Biophys Res Commun 2017; 493:998-1003. [PMID: 28942144 DOI: 10.1016/j.bbrc.2017.09.103] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Accepted: 09/19/2017] [Indexed: 12/30/2022]
Abstract
Microgravity induces skeletal muscle atrophy; however, the underlying mechanism is not clarified. In particular, the influence of microgravity on human skeletal muscle stem/progenitor cells (SMPCs) is not well understood. In this study, we used induced pluripotent stem cell-derived human SMPCs to investigate the effect of microgravity on maintenance of the stem/progenitor cell pool. Human SMPCs were induced by free-floating spherical aggregation culture, and derivatized-SMPC spheres were maintained in a microgravity condition (10-3 G) for 2 weeks using a clinostat rotation system. Microgravity culture deformed the SMPC spheres, with no signs of apoptosis. The most obvious change from microgravity culture was a significant decrease in the expression level of Pax7 in the SMPC spheres, with reduced numbers of myotubes in adhesion culture. Pax7 expression also decreased in the presence of the proteasome inhibitor MG132, indicating that the proteasomal degradation of Pax7 protein is not critical for its reduced expression in microgravity culture. Moreover, microgravity culture decreased the expression level of tumor necrosis factor receptor-associated factor 6 (TRAF6) and phosphorylation of its downstream molecule extracellular-related kinase (ERK) in SMPC spheres. Therefore, microgravity negatively regulates Pax7 expression in human SMPCs possibly through inhibition of the TRAF6/ERK pathway to consequently dysregulate SMPC pool maintenance. Overall, these results suggest that skeletal muscle atrophy is caused by microgravity-induced exhaustion of the stem cell pool.
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Qi C, Zhang J, Chen X, Wan J, Wang J, Zhang P, Liu Y. Hypoxia stimulates neural stem cell proliferation by increasing HIF‑1α expression and activating Wnt/β-catenin signaling. ACTA ACUST UNITED AC 2017; 63:12-19. [PMID: 28838333 DOI: 10.14715/cmb/2017.63.7.2] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Indexed: 01/26/2023]
Abstract
Evidence indicates that after brain injury, neurogenesis is enhanced in regions such as hippocampus, striatum, and cortex. To study the role of hypoxia-inducible factor-1 (HIF‑1α) and Wnt signaling in cerebral ischemia/hypoxia-induced proliferation of neural stem cells (NSCs), we investigated the proliferation of NSCs, expression of HIF‑1α, and activation of Wnt signaling under conditions of pathologic hypoxia in vitro. NSCs were isolated from 30-day-old Sprague-Dawley rats and subjected to 0.3% oxygen in a microaerophilic incubation system. Cell proliferation was evaluated by measuring the diameter of neurospheres and by bromodeoxyuridine incorporation assays. Real-time quantitative PCR and Western blotting were used to detect mRNA and protein levels of HIF-1α, β-catenin, and cyclin D1 in the NSCs. The results showed that hypoxia increased NSC proliferation and the levels of HIF-1α, β‑catenin, and cyclin D1 (p < 0.05). Blockade of the Wnt signaling pathway decreased hypoxia-induced NSC proliferation, whereas activation of this pathway increased hypoxia-induced NSC proliferation (p < 0.05). Knockdown of HIF-1α with HIF-1α siRNA decreased β‑catenin nuclear translocation and cyclin D1 expression, and inhibited proliferation of NSCs (p < 0.05). These findings indicate that pathologic hypoxia stimulates NSC proliferation by increasing expression of HIF-1α and activating the Wnt/β-catenin signaling pathway. The data suggest that Wnt/β-catenin signaling may play a key role in NSC proliferation under conditions of pathologic hypoxia.
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Affiliation(s)
- C Qi
- Institute of Neurobiology, Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710061 China
| | - J Zhang
- Institute of Neurobiology, Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710061 China
| | - X Chen
- Institute of Neurobiology, Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710061 China
| | - J Wan
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University, School of Medicine, Baltimore, Maryland 21205, USA
| | - J Wang
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University, School of Medicine, Baltimore, Maryland 21205, USA
| | - P Zhang
- Institute of Neurobiology, Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710061 China
| | - Y Liu
- Institute of Neurobiology, Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710061 China
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Szlachcic WJ, Wiatr K, Trzeciak M, Figlerowicz M, Figiel M. The Generation of Mouse and Human Huntington Disease iPS Cells Suitable for In vitro Studies on Huntingtin Function. Front Mol Neurosci 2017; 10:253. [PMID: 28848389 PMCID: PMC5550714 DOI: 10.3389/fnmol.2017.00253] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Accepted: 07/26/2017] [Indexed: 01/24/2023] Open
Abstract
Huntington disease (HD) is an incurable neurodegenerative disorder caused by expansion of CAG repeats in huntingtin (HTT) gene, resulting in expanded polyglutamine tract in HTT protein. Although, HD has its common onset in adulthood, subtle symptoms in patients may occur decades before diagnosis, and molecular and cellular changes begin much earlier, even in cells that are not yet lineage committed such as stem cells. Studies in induced pluripotent stem cell (iPSC) HD models have demonstrated that multiple molecular processes are altered by the mutant HTT protein and suggested its silencing as a promising therapeutic strategy. Therefore, we aimed to generate HD iPS cells with stable silencing of HTT and further to investigate the effects of HTT knock-down on deregulations of signaling pathways e.g., p53 downregulation, present in cells already in pluripotent state. We designed a gene silencing strategy based on RNAi cassette in piggyBAC vector for constant shRNA expression. Using such system we delivered and tested several shRNA targeting huntingtin in mouse HD YAC128 iPSC and human HD109, HD71, and Control iPSC. The most effective shRNA (shHTT2) reagent stably silenced HTT in all HD iPS cells and remained active upon differentiation to neural stem cells (NSC). When investigating the effects of HTT silencing on signaling pathways, we found that in mouse HD iPSC lines expressing shRNA the level of mutant HTT inversely correlated with p53 levels, resulting in p53 level normalization upon silencing of mutant HTT. We also found that p53 deregulation continues into the NSC developmental stage and it was reversed upon HTT silencing. In addition, we observed subtle effects of silencing on proteins of Wnt/β-catenin and ERK1/2 signaling pathways. In summary, we successfully created the first mouse and human shRNA-expressing HD iPS cells with stable and continuous HTT silencing. Moreover, we demonstrated reversal of HD p53 phenotype in mouse HD iPSC, therefore, the stable knockdown of HTT is well-suited for investigation on HD cellular pathways, and is potentially useful as a stand-alone therapy or component of cell therapy. In addition, the total HTT knock-down in our human cells has further implications for mutant allele selective approach in iPSC.
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Affiliation(s)
- Wojciech J Szlachcic
- Department of Molecular Neurobiology, Institute of Bioorganic Chemistry, Polish Academy of SciencesPoznań, Poland
| | - Kalina Wiatr
- Department of Molecular Neurobiology, Institute of Bioorganic Chemistry, Polish Academy of SciencesPoznań, Poland
| | - Marta Trzeciak
- Department of Molecular Neurobiology, Institute of Bioorganic Chemistry, Polish Academy of SciencesPoznań, Poland
| | - Marek Figlerowicz
- Department of Molecular and Systems Biology, Institute of Bioorganic Chemistry, Polish Academy of SciencesPoznań, Poland
| | - Maciej Figiel
- Department of Molecular Neurobiology, Institute of Bioorganic Chemistry, Polish Academy of SciencesPoznań, Poland
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50
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Edoff K, Raciti M, Moors M, Sundström E, Ceccatelli S. Gestational Age and Sex Influence the Susceptibility of Human Neural Progenitor Cells to Low Levels of MeHg. Neurotox Res 2017; 32:683-693. [PMID: 28756503 PMCID: PMC5602033 DOI: 10.1007/s12640-017-9786-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 07/09/2017] [Accepted: 07/12/2017] [Indexed: 01/13/2023]
Abstract
The developing nervous system is highly susceptible to methylmercury (MeHg), a widespread environmental neurotoxic contaminant. A wide range of morphological and functional outcomes have been described; however, there are still open questions regarding the mechanisms behind the developmental neurotoxic effects induced by low-level exposure. In the present study, we have examined the effects of nanomolar concentrations of MeHg on primary fetal human progenitor cells (hNPCs) with special focus on the role played by developmental stage and sex on the neurotoxic outcome. We found that neurospheres derived from earlier gestational time points exhibit higher susceptibility to MeHg, as they undergo apoptosis at a much lower dose (25 nM) as compared to neurospheres established from older fetuses (100 nM). At subapoptotic concentrations (10 nM), MeHg inhibited neuronal differentiation and maturation of hNPCs, as shown by a reduced number of Tuj1-positive cells and a visible reduction in neurite extension and cell migration, associated with a misregulation of Notch1 and BDNF signaling pathways. Interestingly, cells derived from male fetuses showed more severe alterations of neuronal morphology as compared to cells from females, indicating that the MeHg-induced impairment of neurite extension and cell migration is sex-dependent. Accordingly, the expression of the CDKL5 gene, a major factor regulating neurite outgrowth, was significantly more downregulated in male-derived cells. Altogether, gestational age and sex appear to be critical factors influencing in vitro hNPC sensitivity to low levels of MeHg.
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Affiliation(s)
- Karin Edoff
- Department of Neuroscience, Karolinska Institutet, Retzius väg 8, SE-171 77, Stockholm, Sweden
| | - Marilena Raciti
- Department of Neuroscience, Karolinska Institutet, Retzius väg 8, SE-171 77, Stockholm, Sweden.
| | - Michaela Moors
- Department of Neuroscience, Karolinska Institutet, Retzius väg 8, SE-171 77, Stockholm, Sweden
| | - Erik Sundström
- Department of Neurobiology, Care Sciences, and Society, Karolinska Institutet, Geriatrik-lab plan 5, SE-141 52, Huddinge, Sweden
| | - Sandra Ceccatelli
- Department of Neuroscience, Karolinska Institutet, Retzius väg 8, SE-171 77, Stockholm, Sweden
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