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Wang Y, Madhusudan S, Cotellessa L, Kvist J, Eskici N, Yellapragada V, Pulli K, Lund C, Vaaralahti K, Tuuri T, Giacobini P, Raivio T. Deciphering the Transcriptional Landscape of Human Pluripotent Stem Cell-Derived GnRH Neurons: The Role of Wnt Signaling in Patterning the Neural Fate. Stem Cells 2022; 40:1107-1121. [PMID: 36153707 PMCID: PMC9806769 DOI: 10.1093/stmcls/sxac069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 09/14/2022] [Indexed: 01/05/2023]
Abstract
Hypothalamic gonadotropin-releasing hormone (GnRH) neurons lay the foundation for human development and reproduction; however, the critical cell populations and the entangled mechanisms underlying the development of human GnRH neurons remain poorly understood. Here, by using our established human pluripotent stem cell-derived GnRH neuron model, we decoded the cellular heterogeneity and differentiation trajectories at the single-cell level. We found that a glutamatergic neuron population, which generated together with GnRH neurons, showed similar transcriptomic properties with olfactory sensory neuron and provided the migratory path for GnRH neurons. Through trajectory analysis, we identified a specific gene module activated along the GnRH neuron differentiation lineage, and we examined one of the transcription factors, DLX5, expression in human fetal GnRH neurons. Furthermore, we found that Wnt inhibition could increase DLX5 expression and improve the GnRH neuron differentiation efficiency through promoting neurogenesis and switching the differentiation fates of neural progenitors into glutamatergic neurons/GnRH neurons. Our research comprehensively reveals the dynamic cell population transition and gene regulatory network during GnRH neuron differentiation.
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Affiliation(s)
- Yafei Wang
- Stem Cells and Metabolism Research Program, Research Programs Unit, and Department of Physiology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Shrinidhi Madhusudan
- Stem Cells and Metabolism Research Program, Research Programs Unit, and Department of Physiology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Ludovica Cotellessa
- Univ. Lille, Inserm, CHU Lille, Laboratory of Development and Plasticity of the Postnatal Brain, Lille Neuroscience & Cognition, UMR-S1172, Lille, France
| | - Jouni Kvist
- Stem Cells and Metabolism Research Program, Research Programs Unit, and Department of Physiology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Nazli Eskici
- Stem Cells and Metabolism Research Program, Research Programs Unit, and Department of Physiology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Venkatram Yellapragada
- Stem Cells and Metabolism Research Program, Research Programs Unit, and Department of Physiology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Kristiina Pulli
- Stem Cells and Metabolism Research Program, Research Programs Unit, and Department of Physiology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Carina Lund
- Folkhälsan Research Center, Helsinki, Finland
| | - Kirsi Vaaralahti
- Stem Cells and Metabolism Research Program, Research Programs Unit, and Department of Physiology, Faculty of Medicine, University of Helsinki, Helsinki, Finland,New Children’s Hospital, Pediatric Research Center, Helsinki University Hospital, Helsinki, Finland
| | - Timo Tuuri
- Department of Obstetrics and Gynecology, Helsinki University Hospital, Helsinki, Finland
| | | | - Taneli Raivio
- Corresponding author: Taneli Raivio, Stem Cells and Metabolism Research Program, Research Programs Unit, and Department of Physiology, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
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Chen T, Cao F, Peng W, Wei R, Xu Q, Feng B, Wang J, Weng J, Wang M, Zhang X. Optimal regeneration and repair of critical size articular cartilage driven by endogenous CLECSF1. Biomed Signal Process Control 2022. [DOI: 10.1016/j.bspc.2022.103898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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3
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Yellapragada V, Eskici N, Wang Y, Madhusudan S, Vaaralahti K, Tuuri T, Raivio T. Time and dose-dependent effects of FGF8-FGFR1 signaling in GnRH neurons derived from human pluripotent stem cells. Dis Model Mech 2022; 15:276003. [PMID: 35833364 PMCID: PMC9403748 DOI: 10.1242/dmm.049436] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 06/24/2022] [Indexed: 11/25/2022] Open
Abstract
Fibroblast growth factor 8 (FGF8), acting through the fibroblast growth factor receptor 1 (FGFR1), has an important role in the development of gonadotropin-releasing hormone-expressing neurons (GnRH neurons). We hypothesized that FGF8 regulates differentiation of human GnRH neurons in a time- and dose-dependent manner via FGFR1. To investigate this further, human pluripotent stem cells were differentiated during 10 days of dual-SMAD inhibition into neural progenitor cells, followed either by treatment with FGF8 at different concentrations (25 ng/ml, 50 ng/ml or 100 ng/ml) for 10 days or by treatment with 100 ng/ml FGF8 for different durations (2, 4, 6 or 10 days); cells were then matured through DAPT-induced inhibition of Notch signaling for 5 days into GnRH neurons. FGF8 induced expression of GNRH1 in a dose-dependent fashion and the duration of FGF8 exposure correlated positively with gene expression of GNRH1 (P<0.05, Rs=0.49). However, cells treated with 100 ng/ml FGF8 for 2 days induced the expression of genes, such as FOXG1, ETV5 and SPRY2, and continued FGF8 treatment induced the dynamic expression of several other genes. Moreover, during exposure to FGF8, FGFR1 localized to the cell surface and its specific inhibition with the FGFR1 inhibitor PD166866 reduced expression of GNRH1 (P<0.05). In neurons, FGFR1 also localized to the nucleus. Our results suggest that dose- and time-dependent FGF8 signaling via FGFR1 is indispensable for human GnRH neuron ontogeny. This article has an associated First Person interview with the first author of the paper. Summary: This article demonstrates the essential role FGF8–FGFR1 signaling has in the development of gonadotropin-releasing hormone (GnRH)-expressing neurons by using a human stem cell model.
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Affiliation(s)
- Venkatram Yellapragada
- Stem Cells and Metabolism Research Program (STEMM), Faculty of Medicine, 00014 University of Helsinki, Helsinki, Finland.,Medicum, Faculty of Medicine, 00014 University of Helsinki, Helsinki, Finland
| | - Nazli Eskici
- Stem Cells and Metabolism Research Program (STEMM), Faculty of Medicine, 00014 University of Helsinki, Helsinki, Finland.,Medicum, Faculty of Medicine, 00014 University of Helsinki, Helsinki, Finland
| | - Yafei Wang
- Stem Cells and Metabolism Research Program (STEMM), Faculty of Medicine, 00014 University of Helsinki, Helsinki, Finland.,Medicum, Faculty of Medicine, 00014 University of Helsinki, Helsinki, Finland
| | - Shrinidhi Madhusudan
- Stem Cells and Metabolism Research Program (STEMM), Faculty of Medicine, 00014 University of Helsinki, Helsinki, Finland.,Medicum, Faculty of Medicine, 00014 University of Helsinki, Helsinki, Finland
| | - Kirsi Vaaralahti
- Stem Cells and Metabolism Research Program (STEMM), Faculty of Medicine, 00014 University of Helsinki, Helsinki, Finland.,Medicum, Faculty of Medicine, 00014 University of Helsinki, Helsinki, Finland
| | - Timo Tuuri
- Department of Obstetrics and Gynecology, 00029 Helsinki University Hospital, Helsinki, Finland
| | - Taneli Raivio
- Stem Cells and Metabolism Research Program (STEMM), Faculty of Medicine, 00014 University of Helsinki, Helsinki, Finland.,Medicum, Faculty of Medicine, 00014 University of Helsinki, Helsinki, Finland.,New Children's Hospital, Pediatric Research Center, 00029 Helsinki University Central Hospital, Helsinki, Finland
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Närvä E, Taskinen ME, Lilla S, Isomursu A, Pietilä M, Weltner J, Isola J, Sihto H, Joensuu H, Zanivan S, Norman J, Ivaska J. MASTL is enriched in cancerous and pluripotent stem cells and influences OCT1/OCT4 levels. iScience 2022; 25:104459. [PMID: 35677646 PMCID: PMC9167974 DOI: 10.1016/j.isci.2022.104459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 03/04/2022] [Accepted: 05/13/2022] [Indexed: 11/01/2022] Open
Abstract
MASTL is a mitotic accelerator with an emerging role in breast cancer progression. However, the mechanisms behind its oncogenicity remain largely unknown. Here, we identify a previously unknown role and eminent expression of MASTL in stem cells. MASTL staining from a large breast cancer patient cohort indicated a significant association with β3 integrin, an established mediator of breast cancer stemness. MASTL silencing reduced OCT4 levels in human pluripotent stem cells and OCT1 in breast cancer cells. Analysis of the cell-surface proteome indicated a strong link between MASTL and the regulation of TGF-β receptor II (TGFBR2), a key modulator of TGF-β signaling. Overexpression of wild-type and kinase-dead MASTL in normal mammary epithelial cells elevated TGFBR2 levels. Conversely, MASTL depletion in breast cancer cells attenuated TGFBR2 levels and downstream signaling through SMAD3 and AKT pathways. Taken together, these results indicate that MASTL supports stemness regulators in pluripotent and cancerous stem cells.
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Affiliation(s)
- Elisa Närvä
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, 20520 Turku, Finland
| | - Maria E. Taskinen
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, 20520 Turku, Finland
| | | | - Aleksi Isomursu
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, 20520 Turku, Finland
| | - Mika Pietilä
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, 20520 Turku, Finland
| | - Jere Weltner
- Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, 00290 Helsinki, Finland
| | - Jorma Isola
- Laboratory of Cancer Biology, Faculty of Medicine and Health Technology, Tampere University, 33520 Tampere, Finland
| | - Harri Sihto
- Department of Pathology, University of Helsinki, 00290 Helsinki, Finland
| | - Heikki Joensuu
- University of Helsinki and Comprehensive Cancer Center, Helsinki University Hospital, 00290 Helsinki, Finland
| | - Sara Zanivan
- CRUK Beatson Institute, Glasgow G61 1BD, UK
- Institute of Cancer Sciences, University of Glasgow, Glasgow G61 1QH, UK
| | - Jim Norman
- CRUK Beatson Institute, Glasgow G61 1BD, UK
- Institute of Cancer Sciences, University of Glasgow, Glasgow G61 1QH, UK
| | - Johanna Ivaska
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, 20520 Turku, Finland
- InFLAMES Research Flagship Center, University of Turku, 20520 Turku, Finland
- Department of Life Technologies, University of Turku, 20520 Turku, Finland
- Western Finnish Cancer Center (FICAN West), University of Turku, 20520 Turku, Finland
- Foundation for the Finnish Cancer Institute, Tukholmankatu 8, Helsinki, Finland
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Lund C, Yellapragada V, Vuoristo S, Balboa D, Trova S, Allet C, Eskici N, Pulli K, Giacobini P, Tuuri T, Raivio T. Characterization of the human GnRH neuron developmental transcriptome using a GNRH1-TdTomato reporter line in human pluripotent stem cells. Dis Model Mech 2020; 13:dmm040105. [PMID: 31996360 PMCID: PMC7075073 DOI: 10.1242/dmm.040105] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 01/16/2020] [Indexed: 12/21/2022] Open
Abstract
Gonadotropin-releasing hormone (GnRH) neurons provide a fundamental signal for the onset of puberty and subsequent reproductive functions by secretion of gonadotropin-releasing hormone. Their disrupted development or function leads to congenital hypogonadotropic hypogonadism (CHH). To model the development of human GnRH neurons, we generated a stable GNRH1-TdTomato reporter cell line in human pluripotent stem cells (hPSCs) using CRISPR-Cas9 genome editing. RNA-sequencing of the reporter clone, differentiated into GnRH neurons by dual SMAD inhibition and FGF8 treatment, revealed 6461 differentially expressed genes between progenitors and GnRH neurons. Expression of the transcription factor ISL1, one of the top 50 most upregulated genes in the TdTomato-expressing GnRH neurons, was confirmed in 10.5 gestational week-old human fetal GnRH neurons. Among the differentially expressed genes, we detected 15 genes that are implicated in CHH and several genes that are implicated in human puberty timing. Finally, FGF8 treatment in the neuronal progenitor pool led to upregulation of 37 genes expressed both in progenitors and in TdTomato-expressing GnRH neurons, which suggests upstream regulation of these genes by FGF8 signaling during GnRH neuron differentiation. These results illustrate how hPSC-derived human GnRH neuron transcriptomic analysis can be utilized to dissect signaling pathways and gene regulatory networks involved in human GnRH neuron development.This article has an associated First Person interview with the first author of the paper.
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Affiliation(s)
- Carina Lund
- Stem Cells and Metabolism Research Program, Faculty of Medicine, 00014 University of Helsinki, Helsinki, Finland
- Medicum, Faculty of Medicine, 00014 University of Helsinki, Helsinki, Finland
| | - Venkatram Yellapragada
- Stem Cells and Metabolism Research Program, Faculty of Medicine, 00014 University of Helsinki, Helsinki, Finland
- Medicum, Faculty of Medicine, 00014 University of Helsinki, Helsinki, Finland
| | - Sanna Vuoristo
- Department of Obstetrics and Gynecology, 00029 Helsinki University Hospital, Helsinki, Finland
| | - Diego Balboa
- Centre for Genomic Regulation, The Barcelona Institute of Science and Technology, Dr. Aiguader 88, 08003 Barcelona, Spain
| | - Sara Trova
- Inserm, Laboratory of Development and Plasticity of the Neuroendocrine Brain, Jean-Pierre Aubert Research Center, U1172 Lille, France
| | - Cecile Allet
- Inserm, Laboratory of Development and Plasticity of the Neuroendocrine Brain, Jean-Pierre Aubert Research Center, U1172 Lille, France
| | - Nazli Eskici
- Stem Cells and Metabolism Research Program, Faculty of Medicine, 00014 University of Helsinki, Helsinki, Finland
- Medicum, Faculty of Medicine, 00014 University of Helsinki, Helsinki, Finland
| | - Kristiina Pulli
- Stem Cells and Metabolism Research Program, Faculty of Medicine, 00014 University of Helsinki, Helsinki, Finland
- Medicum, Faculty of Medicine, 00014 University of Helsinki, Helsinki, Finland
| | - Paolo Giacobini
- Inserm, Laboratory of Development and Plasticity of the Neuroendocrine Brain, Jean-Pierre Aubert Research Center, U1172 Lille, France
- University of Lille, FHU 1000 Days for Health, School of Medicine, 59000 Lille, France
| | - Timo Tuuri
- Department of Obstetrics and Gynecology, 00029 Helsinki University Hospital, Helsinki, Finland
| | - Taneli Raivio
- Stem Cells and Metabolism Research Program, Faculty of Medicine, 00014 University of Helsinki, Helsinki, Finland
- Medicum, Faculty of Medicine, 00014 University of Helsinki, Helsinki, Finland
- New Children's Hospital, Pediatric Research Center, 00029 Helsinki University Hospital, Helsinki, Finland
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6
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Stubb A, Guzmán C, Närvä E, Aaron J, Chew TL, Saari M, Miihkinen M, Jacquemet G, Ivaska J. Superresolution architecture of cornerstone focal adhesions in human pluripotent stem cells. Nat Commun 2019; 10:4756. [PMID: 31628312 PMCID: PMC6802214 DOI: 10.1038/s41467-019-12611-w] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 09/17/2019] [Indexed: 12/12/2022] Open
Abstract
While it is clear that key transcriptional programmes are important for maintaining pluripotency, the requirement for cell adhesion to the extracellular matrix remains poorly defined. Human pluripotent stem cells (hPSCs) form colonies encircled by an actin ring and large stable cornerstone focal adhesions (FA). Using superresolution two-colour interferometric photo-activated localisation microscopy, we examine the three-dimensional architecture of cornerstone adhesions and report vertical lamination of FA proteins with three main structural features distinct from previously studied focal adhesions: 1) integrin β5 and talin are present at high density, at the edges of cornerstone FA, adjacent to a vertical kank-rich protein wall, 2) vinculin localises higher than previously reported, displaying a head-above-tail orientation, and 3) surprisingly, actin and α-actinin are present in two discrete z-layers. Finally, we report that depletion of kanks diminishes FA patterning, and actin organisation within the colony, indicating a role for kanks in hPSC colony architecture.
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Affiliation(s)
- Aki Stubb
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, FI-20520, Turku, Finland
| | - Camilo Guzmán
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, FI-20520, Turku, Finland
- Nanophotonics and Bioimaging Facility, INL-International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330, Braga, Portugal
| | - Elisa Närvä
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, FI-20520, Turku, Finland
| | - Jesse Aaron
- Advanced Imaging Center, HHMI Janelia Research Campus, Ashburn, VI, 20147, USA
| | - Teng-Leong Chew
- Advanced Imaging Center, HHMI Janelia Research Campus, Ashburn, VI, 20147, USA
| | - Markku Saari
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, FI-20520, Turku, Finland
| | - Mitro Miihkinen
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, FI-20520, Turku, Finland
| | - Guillaume Jacquemet
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, FI-20520, Turku, Finland
- Faculty of Science and Engineering, Cell Biology, Åbo Akademi University, 20520, Turku, Finland
| | - Johanna Ivaska
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, FI-20520, Turku, Finland.
- Department of Biochemistry, University of Turku, FIN-20520, Turku, Finland.
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Tachypleus tridentatus Lectin Enhances Oncolytic Vaccinia Virus Replication to Suppress In Vivo Hepatocellular Carcinoma Growth. Mar Drugs 2018; 16:md16060200. [PMID: 29880736 PMCID: PMC6025575 DOI: 10.3390/md16060200] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Revised: 06/01/2018] [Accepted: 06/05/2018] [Indexed: 02/06/2023] Open
Abstract
Lectins play diverse roles in physiological processes as biological recognition molecules. In this report, a gene encoding Tachypleus tridentatus Lectin (TTL) was inserted into an oncolytic vaccinia virus (oncoVV) vector to form oncoVV-TTL, which showed significant antitumor activity in a hepatocellular carcinoma mouse model. Furthermore, TTL enhanced oncoVV replication through suppressing antiviral factors expression such as interferon-inducible protein 16 (IFI16), mitochondrial antiviral signaling protein (MAVS) and interferon-beta (IFN-β). Further investigations revealed that oncoVV-TTL replication was highly dependent on ERK activity. This study might provide insights into a novel way of the utilization of TTL in oncolytic viral therapies.
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Achuta VS, Möykkynen T, Peteri UK, Turconi G, Rivera C, Keinänen K, Castrén ML. Functional changes of AMPA responses in human induced pluripotent stem cell-derived neural progenitors in fragile X syndrome. Sci Signal 2018; 11:11/513/eaan8784. [PMID: 29339535 DOI: 10.1126/scisignal.aan8784] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Altered neuronal network formation and function involving dysregulated excitatory and inhibitory circuits are associated with fragile X syndrome (FXS). We examined functional maturation of the excitatory transmission system in FXS by investigating the response of FXS patient-derived neural progenitor cells to the glutamate analog (AMPA). Neural progenitors derived from induced pluripotent stem cell (iPSC) lines generated from boys with FXS had augmented intracellular Ca2+ responses to AMPA and kainate that were mediated by Ca2+-permeable AMPA receptors (CP-AMPARs) lacking the GluA2 subunit. Together with the enhanced differentiation of glutamate-responsive cells, the proportion of CP-AMPAR and N-methyl-d-aspartate (NMDA) receptor-coexpressing cells was increased in human FXS progenitors. Differentiation of cells lacking GluA2 was also increased and paralleled the increased inward rectification in neural progenitors derived from Fmr1-knockout mice (the FXS mouse model). Human FXS progenitors had increased the expression of the precursor and mature forms of miR-181a, a microRNA that represses translation of the transcript encoding GluA2. Blocking GluA2-lacking, CP-AMPARs reduced the neurite length of human iPSC-derived control progenitors and further reduced the shortened length of neurites in human FXS progenitors, supporting the contribution of CP-AMPARs to the regulation of progenitor differentiation. Furthermore, we observed reduced expression of Gria2 (the GluA2-encoding gene) in the frontal lobe of FXS mice, consistent with functional changes of AMPARs in FXS. Increased Ca2+ influx through CP-AMPARs may increase the vulnerability and affect the differentiation and migration of distinct cell populations, which may interfere with normal circuit formation in FXS.
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Affiliation(s)
- Venkat Swaroop Achuta
- Department of Physiology, Faculty of Medicine, University of Helsinki, P.O. Box 63, FIN-00014 Helsinki, Finland
| | - Tommi Möykkynen
- Division of Biochemistry and Biotechnology, Department of Biosciences, University of Helsinki, P.O. Box 56, FIN-00014, Helsinki, Finland
| | - Ulla-Kaisa Peteri
- Department of Physiology, Faculty of Medicine, University of Helsinki, P.O. Box 63, FIN-00014 Helsinki, Finland
| | - Giorgio Turconi
- Department of Physiology, Faculty of Medicine, University of Helsinki, P.O. Box 63, FIN-00014 Helsinki, Finland
| | - Claudio Rivera
- Neuroscience Center, University of Helsinki, P.O. Box 56, FIN-00014 Helsinki, Finland.,Institut de Neurobiologie de la Méditerranée, INSERM, Unité 901, 13009 Marseille, France.,Aix-Marseille Université, Unité Mixte de Recherche 901, 13273 Marseille, France
| | - Kari Keinänen
- Division of Biochemistry and Biotechnology, Department of Biosciences, University of Helsinki, P.O. Box 56, FIN-00014, Helsinki, Finland
| | - Maija L Castrén
- Department of Physiology, Faculty of Medicine, University of Helsinki, P.O. Box 63, FIN-00014 Helsinki, Finland. .,Rinnekoti Foundation, Rinnekodintie 10, FIN-02980 Espoo, Finland.,Autism Foundation, Kuortaneenkatu 7B, FIN-00520 Helsinki, Finland
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9
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Osman MEM, Konozy EHE. Insight into Erythrina Lectins: Properties, Structure and Proposed Physiological Significance. ACTA ACUST UNITED AC 2017. [DOI: 10.2174/1874847301705010057] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The genus Erythrina, collectively known as “coral tree”, are pantropical plants, comprising of more than 112 species. Since the early 1980s, seven of these have been found to possess hemagglutinating activity, although not yet characterized. However, around two dozen galactose-binding lectins have been isolated and fully characterized with respect to their sugar specificity, glycoconjugates agglutination, dependence of activity on metal ions, primary and secondary structures and stability. Three lectins have been fully sequenced and the crystal structures of the two proteins have been solved with and without the haptenic sugar. Lectins isolation and characterization from most of these species usually originated from the seeds, although the proteins from other vegetative tissues have also been reported. The main objective of this review is to summarize the physicochemical and biological properties of the reported purified Erythrina lectins to date. Structural comparisons, based on available lectins sequences, are also made to relate the intrinsic physical and chemical properties of these proteins. Particular attention is also given to the proposed biological significance of the lectins from the genus Erythrina.
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Ylikallio E, Woldegebriel R, Tumiati M, Isohanni P, Ryan MM, Stark Z, Walsh M, Sawyer SL, Bell KM, Oshlack A, Lockhart PJ, Shcherbii M, Estrada-Cuzcano A, Atkinson D, Hartley T, Tetreault M, Cuppen I, van der Pol WL, Candayan A, Battaloglu E, Parman Y, van Gassen KLI, van den Boogaard MJH, Boycott KM, Kauppi L, Jordanova A, Lönnqvist T, Tyynismaa H. MCM3AP in recessive Charcot-Marie-Tooth neuropathy and mild intellectual disability. Brain 2017. [PMID: 28633435 DOI: 10.1093/brain/awx138] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Defects in mRNA export from the nucleus have been linked to various neurodegenerative disorders. We report mutations in the gene MCM3AP, encoding the germinal center associated nuclear protein (GANP), in nine affected individuals from five unrelated families. The variants were associated with severe childhood onset primarily axonal (four families) or demyelinating (one family) Charcot-Marie-Tooth neuropathy. Mild to moderate intellectual disability was present in seven of nine affected individuals. The affected individuals were either compound heterozygous or homozygous for different MCM3AP variants, which were predicted to cause depletion of GANP or affect conserved amino acids with likely importance for its function. Accordingly, fibroblasts of affected individuals from one family demonstrated severe depletion of GANP. GANP has been described to function as an mRNA export factor, and to suppress TDP-43-mediated motor neuron degeneration in flies. Thus our results suggest defective mRNA export from nucleus as a potential pathogenic mechanism of axonal degeneration in these patients. The identification of MCM3AP variants in affected individuals from multiple centres establishes it as a disease gene for childhood-onset recessively inherited Charcot-Marie-Tooth neuropathy with intellectual disability.
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Affiliation(s)
- Emil Ylikallio
- Research Programs Unit, Molecular Neurology, University of Helsinki, 00290 Helsinki, Finland.,Clinical Neurosciences, Neurology, University of Helsinki and Helsinki University Hospital, 00290 Helsinki, Finland
| | - Rosa Woldegebriel
- Research Programs Unit, Molecular Neurology, University of Helsinki, 00290 Helsinki, Finland
| | - Manuela Tumiati
- Research Programs Unit, Genome-Scale Biology, University of Helsinki, 00290 Helsinki, Finland
| | - Pirjo Isohanni
- Research Programs Unit, Molecular Neurology, University of Helsinki, 00290 Helsinki, Finland.,Department of Child Neurology, Children's Hospital and Pediatric Research Center, University of Helsinki and Helsinki University Hospital, 00290 Helsinki, Finland
| | - Monique M Ryan
- Murdoch Children's Research Institute, Melbourne, Victoria, 3052, Australia.,Royal Children's Hospital, Melbourne, Victoria, 3052, Australia.,Department of Paediatrics, The University of Melbourne, Melbourne, Victoria, 3052, Australia
| | - Zornitza Stark
- Murdoch Children's Research Institute, Melbourne, Victoria, 3052, Australia
| | - Maie Walsh
- Murdoch Children's Research Institute, Melbourne, Victoria, 3052, Australia
| | - Sarah L Sawyer
- Department of Genetics and Children's Hospital of Eastern Ontario Research Institute, University of Ottawa, Ottawa, K1H 8L1, Canada
| | - Katrina M Bell
- Murdoch Children's Research Institute, Melbourne, Victoria, 3052, Australia
| | - Alicia Oshlack
- Murdoch Children's Research Institute, Melbourne, Victoria, 3052, Australia
| | - Paul J Lockhart
- Murdoch Children's Research Institute, Melbourne, Victoria, 3052, Australia.,Department of Paediatrics, The University of Melbourne, Melbourne, Victoria, 3052, Australia.,Bruce Lefroy Centre, Murdoch Childrens Research Institute, Melbourne, Victoria, 3052, Australia
| | - Mariia Shcherbii
- Research Programs Unit, Molecular Neurology, University of Helsinki, 00290 Helsinki, Finland
| | - Alejandro Estrada-Cuzcano
- Molecular Neurogenomics Group, VIB Department of Molecular Genetics, University of Antwerp, 2610 Antwerpen, Belgium
| | - Derek Atkinson
- Molecular Neurogenomics Group, VIB Department of Molecular Genetics, University of Antwerp, 2610 Antwerpen, Belgium
| | - Taila Hartley
- Department of Genetics and Children's Hospital of Eastern Ontario Research Institute, University of Ottawa, Ottawa, K1H 8L1, Canada
| | - Martine Tetreault
- Department of Human Genetics, McGill University, Montreal, QC H3A 1B1, Canada.,McGill University and Genome Quebec Innovation Center, Montreal, QC H3A 1A4, Canada
| | - Inge Cuppen
- Department of Paediatric Neurology, Wilhelmina Children's Hospital, University Medical Center Utrecht, Utrecht, The Netherlands
| | - W Ludo van der Pol
- Brain Centre Rudolf Magnus, Department of Neurology and Neurosurgery, University Medical Centre Utrecht, 3508 Utrecht, The Netherlands
| | - Ayse Candayan
- Bogazici University, Department of Molecular Biology and Genetics, Istanbul, Turkey
| | - Esra Battaloglu
- Bogazici University, Department of Molecular Biology and Genetics, Istanbul, Turkey
| | - Yesim Parman
- Istanbul University, Istanbul Medical School, Department of Neurology, Istanbul, Turkey
| | - Koen L I van Gassen
- Department of Medical Genetics, University Medical Center Utrecht, Utrecht, The Netherlands
| | | | - Kym M Boycott
- Department of Genetics and Children's Hospital of Eastern Ontario Research Institute, University of Ottawa, Ottawa, K1H 8L1, Canada
| | - Liisa Kauppi
- Research Programs Unit, Genome-Scale Biology, University of Helsinki, 00290 Helsinki, Finland
| | - Albena Jordanova
- Molecular Neurogenomics Group, VIB Department of Molecular Genetics, University of Antwerp, 2610 Antwerpen, Belgium
| | - Tuula Lönnqvist
- Department of Child Neurology, Children's Hospital and Pediatric Research Center, University of Helsinki and Helsinki University Hospital, 00290 Helsinki, Finland
| | - Henna Tyynismaa
- Research Programs Unit, Molecular Neurology, University of Helsinki, 00290 Helsinki, Finland.,Department of Medical and Clinical Genetics, University of Helsinki, 00290 Helsinki, Finland
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11
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Cooper HM, Yang Y, Ylikallio E, Khairullin R, Woldegebriel R, Lin KL, Euro L, Palin E, Wolf A, Trokovic R, Isohanni P, Kaakkola S, Auranen M, Lönnqvist T, Wanrooij S, Tyynismaa H. ATPase-deficient mitochondrial inner membrane protein ATAD3A disturbs mitochondrial dynamics in dominant hereditary spastic paraplegia. Hum Mol Genet 2017; 26:1432-1443. [PMID: 28158749 PMCID: PMC5393146 DOI: 10.1093/hmg/ddx042] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 01/24/2017] [Indexed: 01/02/2023] Open
Abstract
De novo mutations in ATAD3A (ATPase family AAA-domain containing protein 3A) were recently found to cause a neurological syndrome with developmental delay, hypotonia, spasticity, optic atrophy, axonal neuropathy, and hypertrophic cardiomyopathy. Using whole-exome sequencing, we identified a dominantly inherited heterozygous variant c.1064G > A (p.G355D) in ATAD3A in a mother presenting with hereditary spastic paraplegia (HSP) and axonal neuropathy and her son with dyskinetic cerebral palsy, both with disease onset in childhood. HSP is a clinically and genetically heterogeneous disorder of the upper motor neurons. Symptoms beginning in early childhood may resemble spastic cerebral palsy. The function of ATAD3A, a mitochondrial inner membrane AAA ATPase, is yet undefined. AAA ATPases form hexameric rings, which are catalytically dependent on the co-operation of the subunits. The dominant-negative patient mutation affects the Walker A motif, which is responsible for ATP binding in the AAA module of ATAD3A, and we show that the recombinant mutant ATAD3A protein has a markedly reduced ATPase activity. We further show that overexpression of the mutant ATAD3A fragments the mitochondrial network and induces lysosome mass. Similarly, we observed altered dynamics of the mitochondrial network and increased lysosomes in patient fibroblasts and neurons derived through differentiation of patient-specific induced pluripotent stem cells. These alterations were verified in patient fibroblasts to associate with upregulated basal autophagy through mTOR inactivation, resembling starvation. Mutations in ATAD3A can thus be dominantly inherited and underlie variable neurological phenotypes, including HSP, with intrafamiliar variability. This finding extends the group of mitochondrial inner membrane AAA proteins associated with spasticity.
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Affiliation(s)
- Helen M Cooper
- Åbo Akademi University, Faculty of Natural Sciences and Technology, Turku, Finland
| | - Yang Yang
- Research Programs Unit, Molecular Neurology, University of Helsinki, Helsinki, Finland.,Institute of Neuroscience, Zhejiang University School of Medicine, Hangzhou, P.R. China
| | - Emil Ylikallio
- Research Programs Unit, Molecular Neurology, University of Helsinki, Helsinki, Finland.,Clinical Neurosciences, Neurology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Rafil Khairullin
- Department of Medical Biochemistry and Biophysics, Umeå University, Umeå, Sweden.,Institute of Fundamental Medicine and Biology, Kazan (Volga Region) Federal University, Kazan, Russia
| | - Rosa Woldegebriel
- Research Programs Unit, Molecular Neurology, University of Helsinki, Helsinki, Finland
| | - Kai-Lan Lin
- Åbo Akademi University, Faculty of Natural Sciences and Technology, Turku, Finland
| | - Liliya Euro
- Research Programs Unit, Molecular Neurology, University of Helsinki, Helsinki, Finland
| | - Eino Palin
- Research Programs Unit, Molecular Neurology, University of Helsinki, Helsinki, Finland
| | - Alexander Wolf
- Institute of Molecular Toxicology and Pharmacology, Helmholtz-Zentrum Muenchen-German Research Center for Environmental Health, Neuherberg, Germany
| | - Ras Trokovic
- Research Programs Unit, Molecular Neurology, University of Helsinki, Helsinki, Finland
| | - Pirjo Isohanni
- Research Programs Unit, Molecular Neurology, University of Helsinki, Helsinki, Finland.,Department of Child Neurology, Children's Hospital, Helsinki University Hospital, Helsinki, Finland
| | - Seppo Kaakkola
- Clinical Neurosciences, Neurology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Mari Auranen
- Research Programs Unit, Molecular Neurology, University of Helsinki, Helsinki, Finland.,Clinical Neurosciences, Neurology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Tuula Lönnqvist
- Department of Child Neurology, Children's Hospital, Helsinki University Hospital, Helsinki, Finland
| | - Sjoerd Wanrooij
- Department of Medical Biochemistry and Biophysics, Umeå University, Umeå, Sweden
| | - Henna Tyynismaa
- Research Programs Unit, Molecular Neurology, University of Helsinki, Helsinki, Finland.,Department of Medical and Clinical Genetics, University of Helsinki, Helsinki, Finland
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12
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Phanthong P, Borwornpinyo S, Kitiyanant N, Jearawiriyapaisarn N, Nuntakarn L, Saetan J, Nualkaew T, Sa-Ngiamsuntorn K, Anurathapan U, Dinnyes A, Kitiyanant Y, Hongeng S. Enhancement of β-Globin Gene Expression in Thalassemic IVS2-654 Induced Pluripotent Stem Cell-Derived Erythroid Cells by Modified U7 snRNA. Stem Cells Transl Med 2017; 6:1059-1069. [PMID: 28213976 PMCID: PMC5442829 DOI: 10.1002/sctm.16-0121] [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: 03/16/2016] [Revised: 11/27/2016] [Accepted: 12/21/2016] [Indexed: 12/30/2022] Open
Abstract
The therapeutic use of patient‐specific induced pluripotent stem cells (iPSCs) is emerging as a potential treatment of β‐thalassemia. Ideally, patient‐specific iPSCs would be genetically corrected by various approaches to treat β‐thalassemia including lentiviral gene transfer, lentivirus‐delivered shRNA, and gene editing. These corrected iPSCs would be subsequently differentiated into hematopoietic stem cells and transplanted back into the same patient. In this article, we present a proof of principle study for disease modeling and screening using iPSCs to test the potential use of the modified U7 small nuclear (sn) RNA to correct a splice defect in IVS2‐654 β‐thalassemia. In this case, the aberration results from a mutation in the human β‐globin intron 2 causing an aberrant splicing of β‐globin pre‐mRNA and preventing synthesis of functional β‐globin protein. The iPSCs (derived from mesenchymal stromal cells from a patient with IVS2‐654 β‐thalassemia/hemoglobin (Hb) E) were transduced with a lentivirus carrying a modified U7 snRNA targeting an IVS2‐654 β‐globin pre‐mRNA in order to restore the correct splicing. Erythroblasts differentiated from the transduced iPSCs expressed high level of correctly spliced β‐globin mRNA suggesting that the modified U7 snRNA was expressed and mediated splicing correction of IVS2‐654 β‐globin pre‐mRNA in these cells. Moreover, a less active apoptosis cascade process was observed in the corrected cells at transcription level. This study demonstrated the potential use of a genetically modified U7 snRNA with patient‐specific iPSCs for the partial restoration of the aberrant splicing process of β‐thalassemia. Stem Cells Translational Medicine2017;6:1059–1069
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Affiliation(s)
| | - Suparerk Borwornpinyo
- Biotechnology.,Excellent Center for Drug Discovery, Faculty of Science, Mahidol University, Bangkok, Thailand
| | | | | | | | - Jirawat Saetan
- Anatomy Department, Faculty of Science, Prince of Songkla University, Songkhla, Thailand
| | | | | | - Usanarat Anurathapan
- Pediatrics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Andras Dinnyes
- Biotalentum Ltd, Godollo, Hungary.,Molecular Animal Biotechnology Laboratory, Szent Istvan University, Godollo, Hungary
| | - Yindee Kitiyanant
- Departments of Anatomy.,Stem Cell Research Group.,Reproductive Biology Research Group, Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom, Thailand
| | - Suradej Hongeng
- Pediatrics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
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13
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Lund C, Pulli K, Yellapragada V, Giacobini P, Lundin K, Vuoristo S, Tuuri T, Noisa P, Raivio T. Development of Gonadotropin-Releasing Hormone-Secreting Neurons from Human Pluripotent Stem Cells. Stem Cell Reports 2016; 7:149-57. [PMID: 27426041 PMCID: PMC4982984 DOI: 10.1016/j.stemcr.2016.06.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 06/13/2016] [Accepted: 06/15/2016] [Indexed: 12/18/2022] Open
Abstract
Gonadotropin-releasing hormone (GnRH) neurons regulate human puberty and reproduction. Modeling their development and function in vitro would be of interest for both basic research and clinical translation. Here, we report a three-step protocol to differentiate human pluripotent stem cells (hPSCs) into GnRH-secreting neurons. Firstly, hPSCs were differentiated to FOXG1, EMX2, and PAX6 expressing anterior neural progenitor cells (NPCs) by dual SMAD inhibition. Secondly, NPCs were treated for 10 days with FGF8, which is a key ligand implicated in GnRH neuron ontogeny, and finally, the cells were matured with Notch inhibitor to bipolar TUJ1-positive neurons that robustly expressed GNRH1 and secreted GnRH decapeptide into the culture medium. The protocol was reproducible both in human embryonic stem cells and induced pluripotent stem cells, and thus provides a translational tool for investigating the mechanisms of human puberty and its disorders. GnRH neurons regulate puberty and reproduction We generated GnRH-expressing and secreting neurons from hPSCs These neurons can be used to study diseases affecting the reproductive system
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Affiliation(s)
- Carina Lund
- Faculty of Medicine, Department of Physiology, University of Helsinki, Helsinki 00014, Finland
| | - Kristiina Pulli
- Faculty of Medicine, Department of Physiology, University of Helsinki, Helsinki 00014, Finland
| | - Venkatram Yellapragada
- Faculty of Medicine, Department of Physiology, University of Helsinki, Helsinki 00014, Finland
| | - Paolo Giacobini
- Inserm, Jean-Pierre Aubert Research Center, Development and Plasticity of the Neuroendocrine Brain, Unité 1172, 59045 Lille Cedex, France; School of Medicine, University of Lille, Lille 59000, France
| | - Karolina Lundin
- Department of Obstetrics and Gynecology, HUCH, Helsinki 00029, Finland
| | - Sanna Vuoristo
- Faculty of Medicine, Department of Physiology, University of Helsinki, Helsinki 00014, Finland
| | - Timo Tuuri
- Department of Obstetrics and Gynecology, HUCH, Helsinki 00029, Finland
| | - Parinya Noisa
- School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; Faculty of Medicine/Physiology, University of Helsinki, Biomedicum Helsinki, PO Box 63 (Haartmaninkatu 8), Helsinki 00014, Finland
| | - Taneli Raivio
- Faculty of Medicine, Department of Physiology, University of Helsinki, Helsinki 00014, Finland; Children's Hospital, Pediatric Research Center, Helsinki University Central Hospital (HUCH), Helsinki 00029, Finland; Faculty of Medicine/Physiology, University of Helsinki, Biomedicum Helsinki, PO Box 63 (Haartmaninkatu 8), Helsinki 00014, Finland.
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14
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Abstract
Lectins are carbohydrate binding proteins present in seeds of many plants, especially corals and beans, in fungi and bacteria, and in animals. Apart from their hemagglutinating property, a wide range of functions have been attributed to them. Their importance in the area of immunohematology is immense. They are used to detect specific red cell antigens, to activate different types of lymphocytes, in order to resolve problems related to polyagglutination and so on. The introduction of advanced biotechnological tools generates new opportunities to exploit the properties of lectins, which were not used earlier. Stem cell research is a very important area in transplant medicine. Certain lectins detect surface markers of stem cell. Hence, they are used to understand the developmental biology of stem cells. The role of various lectins in the areas of transfusion and transplant medicine is discussed in detail in this review.
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Affiliation(s)
- Ajit C Gorakshakar
- Department of Transfusion Medicine, National Institute of Immunohaematology, KEM Hospital Campus, Mumbai, Maharashtra, India
| | - Kanjaksha Ghosh
- Department of Transfusion Medicine, National Institute of Immunohaematology, KEM Hospital Campus, Mumbai, Maharashtra, India
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15
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Tamminen K, Balboa D, Toivonen S, Pakarinen MP, Wiener Z, Alitalo K, Otonkoski T. Intestinal Commitment and Maturation of Human Pluripotent Stem Cells Is Independent of Exogenous FGF4 and R-spondin1. PLoS One 2015; 10:e0134551. [PMID: 26230325 PMCID: PMC4521699 DOI: 10.1371/journal.pone.0134551] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Accepted: 07/12/2015] [Indexed: 01/21/2023] Open
Abstract
Wnt/beta-catenin signaling plays a central role in guiding the differentiation of the posterior parts of the primitive gut tube into intestinal structures in vivo and some studies suggest that FGF4 is another crucial factor for intestinal development. The aim of this study was to define the effects of Wnt and FGF4 on intestinal commitment in vitro by establishing conditions for differentiation of human pluripotent stem cells (hPSC) into posterior endoderm (hindgut) and further to self-renewing intestinal-like organoids. The most prominent induction of the well-established intestinal marker gene CDX2 was achieved when hPSC-derived definitive endoderm cells were treated with Wnt agonist molecule CHIR99021 during differentiation to hindgut. FGF4 was found to be dispensable during intestinal commitment, but it had an early role in repressing development towards the hepatic lineage. When hindgut stage cells were further cultured in 3D, they formed self-renewing organoid structures containing all major intestinal cell types even without exogenous R-spondin1 (RSPO1), a crucial factor for the culture of epithelial organoids derived from adult intestine. This may be explained by the presence of a mesenchymal compartment in the hPSC-derived organoids. Addition of WNT3A increased the expression of the Paneth cell marker Lysozyme in hPSC-derived organoid cultures, whereas FGF4 inhibited both the formation and maturation of intestinal-like organoids. Similar hindgut and organoid cultures were established from human induced pluripotent stem cells, implying that this approach can be used to create patient-specific intestinal tissue models for disease modeling in vitro.
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Affiliation(s)
- Kaisa Tamminen
- Research Programs Unit, Molecular Neurology and Biomedicum Stem Cell Centre, University of Helsinki, Helsinki, Finland
| | - Diego Balboa
- Research Programs Unit, Molecular Neurology and Biomedicum Stem Cell Centre, University of Helsinki, Helsinki, Finland
| | - Sanna Toivonen
- Research Programs Unit, Molecular Neurology and Biomedicum Stem Cell Centre, University of Helsinki, Helsinki, Finland
| | - Mikko P. Pakarinen
- Children’s Hospital, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
| | - Zoltan Wiener
- Translational Cancer Biology Program and Wihuri Research Institute, Biomedicum Helsinki, Helsinki, Finland
| | - Kari Alitalo
- Translational Cancer Biology Program and Wihuri Research Institute, Biomedicum Helsinki, Helsinki, Finland
| | - Timo Otonkoski
- Research Programs Unit, Molecular Neurology and Biomedicum Stem Cell Centre, University of Helsinki, Helsinki, Finland
- Children’s Hospital, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
- * E-mail:
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16
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Vuoristo S, Toivonen S, Weltner J, Mikkola M, Ustinov J, Trokovic R, Palgi J, Lund R, Tuuri T, Otonkoski T. A novel feeder-free culture system for human pluripotent stem cell culture and induced pluripotent stem cell derivation. PLoS One 2013; 8:e76205. [PMID: 24098444 PMCID: PMC3788803 DOI: 10.1371/journal.pone.0076205] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2013] [Accepted: 08/21/2013] [Indexed: 12/31/2022] Open
Abstract
Correct interactions with extracellular matrix are essential to human pluripotent stem cells (hPSC) to maintain their pluripotent self-renewal capacity during in vitro culture. hPSCs secrete laminin 511/521, one of the most important functional basement membrane components, and they can be maintained on human laminin 511 and 521 in defined culture conditions. However, large-scale production of purified or recombinant laminin 511 and 521 is difficult and expensive. Here we have tested whether a commonly available human choriocarcinoma cell line, JAR, which produces high quantities of laminins, supports the growth of undifferentiated hPSCs. We were able to maintain several human pluripotent stem cell lines on decellularized matrix produced by JAR cells using a defined culture medium. The JAR matrix also supported targeted differentiation of the cells into neuronal and hepatic directions. Importantly, we were able to derive new human induced pluripotent stem cell (hiPSC) lines on JAR matrix and show that adhesion of the early hiPSC colonies to JAR matrix is more efficient than to matrigel. In summary, JAR matrix provides a cost-effective and easy-to-prepare alternative for human pluripotent stem cell culture and differentiation. In addition, this matrix is ideal for the efficient generation of new hiPSC lines.
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Affiliation(s)
- Sanna Vuoristo
- Research Programs Unit, Molecular Neurology and Biomedicum Stem Cell Centre, University of Helsinki, Helsinki, Finland
- * E-mail:
| | - Sanna Toivonen
- Research Programs Unit, Molecular Neurology and Biomedicum Stem Cell Centre, University of Helsinki, Helsinki, Finland
| | - Jere Weltner
- Research Programs Unit, Molecular Neurology and Biomedicum Stem Cell Centre, University of Helsinki, Helsinki, Finland
| | - Milla Mikkola
- Research Programs Unit, Molecular Neurology and Biomedicum Stem Cell Centre, University of Helsinki, Helsinki, Finland
| | - Jarkko Ustinov
- Research Programs Unit, Molecular Neurology and Biomedicum Stem Cell Centre, University of Helsinki, Helsinki, Finland
| | - Ras Trokovic
- Research Programs Unit, Molecular Neurology and Biomedicum Stem Cell Centre, University of Helsinki, Helsinki, Finland
| | - Jaan Palgi
- Research Programs Unit, Molecular Neurology and Biomedicum Stem Cell Centre, University of Helsinki, Helsinki, Finland
| | - Riikka Lund
- The Finnish Microarray and Sequencing Centre, Turku Centre for Biotechnology, University of Turku and Åbo Akademi University, Turku, Finland
| | - Timo Tuuri
- Research Programs Unit, Molecular Neurology and Biomedicum Stem Cell Centre, University of Helsinki, Helsinki, Finland
| | - Timo Otonkoski
- Research Programs Unit, Molecular Neurology and Biomedicum Stem Cell Centre, University of Helsinki, Helsinki, Finland
- Children’s Hospital, Helsinki University Central Hospital, Helsinki, Finland
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