1
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Wianny F, Dzahini K, Fifel K, Wilson CRE, Bernat A, Dolmazon V, Misery P, Lamy C, Giroud P, Cooper HM, Knoblauch K, Procyk E, Kennedy H, Savatier P, Dehay C, Vezoli J. Induced Cognitive Impairments Reversed by Grafts of Neural Precursors: A Longitudinal Study in a Macaque Model of Parkinson's Disease. Adv Sci (Weinh) 2022; 9:e2103827. [PMID: 35137562 PMCID: PMC8981458 DOI: 10.1002/advs.202103827] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 01/14/2022] [Indexed: 05/10/2023]
Abstract
Parkinson's disease (PD) evolves over an extended and variable period in humans; years prior to the onset of classical motor symptoms, sleep and biological rhythm disorders develop, significantly impacting the quality-of-life of patients. Circadian-rhythm disorders are accompanied by mild cognitive deficits that progressively worsen with disease progression and can constitute a severe burden for patients at later stages. The gold-standard 6-methyl-1-methyl-4-phenyl-1,2,3,6-tetrahydropyridin (MPTP) macaque model of PD recapitulates the progression of motor and nonmotor symptoms over contracted periods of time. Here, this multidisciplinary/multiparametric study follows, in five animals, the steady progression of motor and nonmotor symptoms and describes their reversal following grafts of neural precursors in diverse functional domains of the basal ganglia. Results show unprecedented recovery from cognitive symptoms in addition to a strong clinical motor recuperation. Both motor and cognitive recovery and partial circadian rhythm recovery correlate with the degree of graft integration, and in a subset of animals, with in vivo levels of striatal dopaminergic innervation and function. The present study provides empirical evidence that integration of neural precursors following transplantation efficiently restores function at multiple levels in parkinsonian nonhuman primates and, given interindividuality of disease progression and recovery, underlines the importance of longitudinal multidisciplinary assessments in view of clinical translation.
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Affiliation(s)
- Florence Wianny
- Univ Lyon, Université Claude Bernard Lyon 1Inserm U1208Stem Cell and Brain Research InstituteBron69500France
- PrimastemBron69500France
| | - Kwamivi Dzahini
- Univ Lyon, Université Claude Bernard Lyon 1Inserm U1208Stem Cell and Brain Research InstituteBron69500France
- PrimastemBron69500France
| | - Karim Fifel
- Univ Lyon, Université Claude Bernard Lyon 1Inserm U1208Stem Cell and Brain Research InstituteBron69500France
- Present address: International Institute for Integrative Sleep Medicine (WPI‐IIIS)University of TsukubaTsukubaIbaraki305‐8575Japan
| | - Charles Robert Eden Wilson
- Univ Lyon, Université Claude Bernard Lyon 1Inserm U1208Stem Cell and Brain Research InstituteBron69500France
| | - Agnieszka Bernat
- Univ Lyon, Université Claude Bernard Lyon 1Inserm U1208Stem Cell and Brain Research InstituteBron69500France
- Present address: Laboratory of Molecular DiagnosticsDepartment of BiotechnologyInter‐collegiate Faculty of BiotechnologyUniversity of Gdańsk and Medical University of GdańskGdańsk80‐307Poland
- Present address: Laboratory of Experimental EmbryologyInstitute of Genetics and Animal BiotechnologyPolish Academy of SciencesWarsaw05‐552Poland
| | - Virginie Dolmazon
- Univ Lyon, Université Claude Bernard Lyon 1Inserm U1208Stem Cell and Brain Research InstituteBron69500France
| | - Pierre Misery
- Univ Lyon, Université Claude Bernard Lyon 1Inserm U1208Stem Cell and Brain Research InstituteBron69500France
| | - Camille Lamy
- Univ Lyon, Université Claude Bernard Lyon 1Inserm U1208Stem Cell and Brain Research InstituteBron69500France
| | - Pascale Giroud
- Univ Lyon, Université Claude Bernard Lyon 1Inserm U1208Stem Cell and Brain Research InstituteBron69500France
| | - Howard Michael Cooper
- Univ Lyon, Université Claude Bernard Lyon 1Inserm U1208Stem Cell and Brain Research InstituteBron69500France
| | - Kenneth Knoblauch
- Univ Lyon, Université Claude Bernard Lyon 1Inserm U1208Stem Cell and Brain Research InstituteBron69500France
- National Centre for OpticsVision and Eye CareFaculty of Health and Social SciencesUniversity College of Southeast NorwayKongsbergN‐3603Norway
| | - Emmanuel Procyk
- Univ Lyon, Université Claude Bernard Lyon 1Inserm U1208Stem Cell and Brain Research InstituteBron69500France
| | - Henry Kennedy
- Univ Lyon, Université Claude Bernard Lyon 1Inserm U1208Stem Cell and Brain Research InstituteBron69500France
- Institute of NeuroscienceState Key Laboratory of NeuroscienceChinese Academy of Sciences (CAS) Key Laboratory of Primate NeurobiologyShanghai200031China
| | - Pierre Savatier
- Univ Lyon, Université Claude Bernard Lyon 1Inserm U1208Stem Cell and Brain Research InstituteBron69500France
- PrimastemBron69500France
| | - Colette Dehay
- Univ Lyon, Université Claude Bernard Lyon 1Inserm U1208Stem Cell and Brain Research InstituteBron69500France
- PrimastemBron69500France
| | - Julien Vezoli
- Univ Lyon, Université Claude Bernard Lyon 1Inserm U1208Stem Cell and Brain Research InstituteBron69500France
- Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck SocietyFrankfurt60528Germany
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2
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Aksoy I, Rognard C, Moulin A, Marcy G, Masfaraud E, Wianny F, Cortay V, Bellemin-Ménard A, Doerflinger N, Dirheimer M, Mayère C, Bourillot PY, Lynch C, Raineteau O, Joly T, Dehay C, Serrano M, Afanassieff M, Savatier P. Apoptosis, G1 Phase Stall, and Premature Differentiation Account for Low Chimeric Competence of Human and Rhesus Monkey Naive Pluripotent Stem Cells. Stem Cell Reports 2020; 16:56-74. [PMID: 33382978 PMCID: PMC7815945 DOI: 10.1016/j.stemcr.2020.12.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 12/01/2020] [Accepted: 12/01/2020] [Indexed: 11/25/2022] Open
Abstract
After reprogramming to naive pluripotency, human pluripotent stem cells (PSCs) still exhibit very low ability to make interspecies chimeras. Whether this is because they are inherently devoid of the attributes of chimeric competency or because naive PSCs cannot colonize embryos from distant species remains to be elucidated. Here, we have used different types of mouse, human, and rhesus monkey naive PSCs and analyzed their ability to colonize rabbit and cynomolgus monkey embryos. Mouse embryonic stem cells (ESCs) remained mitotically active and efficiently colonized host embryos. In contrast, primate naive PSCs colonized host embryos with much lower efficiency. Unlike mouse ESCs, they slowed DNA replication after dissociation and, after injection into host embryos, they stalled in the G1 phase and differentiated prematurely, regardless of host species. We conclude that human and non-human primate naive PSCs do not efficiently make chimeras because they are inherently unfit to remain mitotically active during colonization. Mouse ESCs are highly effective in colonizing rabbit and non-human primate embryos Rhesus monkey and human naive PSCs ineffectively colonize rabbit and monkey embryos Most rhesus/human naive PSCs differentiate prematurely upon injection into embryos Rhesus monkey PSCs stall in the G1 phase after transfer into rabbit embryos
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Affiliation(s)
- Irène Aksoy
- Univ Lyon, Université Lyon 1, INSERM, Stem Cell and Brain Research Institute U1208, 69500 Bron, France.
| | - Cloé Rognard
- Univ Lyon, Université Lyon 1, INSERM, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Anaïs Moulin
- Univ Lyon, Université Lyon 1, INSERM, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Guillaume Marcy
- Univ Lyon, Université Lyon 1, INSERM, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Etienne Masfaraud
- Univ Lyon, Université Lyon 1, INSERM, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Florence Wianny
- Univ Lyon, Université Lyon 1, INSERM, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Véronique Cortay
- Univ Lyon, Université Lyon 1, INSERM, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Angèle Bellemin-Ménard
- Univ Lyon, Université Lyon 1, INSERM, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Nathalie Doerflinger
- Univ Lyon, Université Lyon 1, INSERM, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Manon Dirheimer
- Univ Lyon, Université Lyon 1, INSERM, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Chloé Mayère
- Univ Lyon, Université Lyon 1, INSERM, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Pierre-Yves Bourillot
- Univ Lyon, Université Lyon 1, INSERM, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Cian Lynch
- Cellular Plasticity and Disease Group, Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Barcelona 08028, Spain
| | - Olivier Raineteau
- Univ Lyon, Université Lyon 1, INSERM, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Thierry Joly
- ISARA-Lyon, 69007 Lyon, France; VetAgroSup, UPSP ICE, 69280 Marcy l'Etoile, France
| | - Colette Dehay
- Univ Lyon, Université Lyon 1, INSERM, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Manuel Serrano
- Cellular Plasticity and Disease Group, Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Barcelona 08028, Spain
| | - Marielle Afanassieff
- Univ Lyon, Université Lyon 1, INSERM, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Pierre Savatier
- Univ Lyon, Université Lyon 1, INSERM, Stem Cell and Brain Research Institute U1208, 69500 Bron, France.
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3
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Kennedy H, Wianny F, Dehay C. Determinants of primate neurogenesis and the deployment of top-down generative networks in the cortical hierarchy. Curr Opin Neurobiol 2020; 66:69-76. [PMID: 33099180 DOI: 10.1016/j.conb.2020.09.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 09/10/2020] [Accepted: 09/19/2020] [Indexed: 01/12/2023]
Abstract
What I cannot create I do not understand - Richard Feynman 1978 Because primate cortical development exhibits numerous specific features, the mouse is an imperfect model for human cortical development. Expansion of supragranular neurons is an evolutionary feature characterizing the primate cortex. Increased production of supragranular neurons is supported by a germinal zone innovation of the primate cortex: the Outer SubVentricular Zone, which along with supragranular neurons constitute privileged targets of primate brain-specific gene evolution. The resulting cell-type diversity of human supragranular neurons link cell and molecular evolutionary changes in progenitors with the emergence of distinctive architectural features in the primate cortex. We propose that these changes are required for the expansion of the primate cortical hierarchy deploying top-down generative networks with potentially important consequences for the neurobiology of human psychiatric disorders.
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Affiliation(s)
- Henry Kennedy
- University of Lyon, Université Claude Bernard Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, Bron 69500, France; Institute of Neuroscience, State Key Laboratory of Neuroscience, Chinese Academy of Sciences Key Laboratory of Primate Neurobiology, Shanghai 200031, China.
| | - Florence Wianny
- University of Lyon, Université Claude Bernard Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, Bron 69500, France
| | - Colette Dehay
- University of Lyon, Université Claude Bernard Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, Bron 69500, France.
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4
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Lins L, Wianny F, Dehay C, Jestin J, Loh W. Adhesive Sponge Based on Supramolecular Dimer Interactions as Scaffolds for Neural Stem Cells. Biomacromolecules 2020; 21:3394-3410. [PMID: 32584556 DOI: 10.1021/acs.biomac.0c00825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Improving cell-material interactions of nonadhesive scaffolds is crucial for the success of biomaterials in tissue engineering. Due to their high surface area and open pore structure, sponges are widely reported as absorbent materials for biomedical engineering. The biocompatibility and biodegradability of polysaccharide sponges, coupled with the chemical functionalities of supramolecular dimers, make them promising combinations for the development of adhesive scaffolds. Here, a supramolecular tactic based on (UPy)-modified polysaccharide associated with three-dimensional structure of sponges was developed to reach enhanced cellular adhesion. For this purpose, three approaches were examined individually in order to accomplish this goal. In the first approach, the backbone polysaccharides with noncell adhesive properties were modified via a modular tactic using UPy-dimers. Hereupon, the physical-chemical characterizations of the supramolecular sponges were performed, showing that the presence of supramolecular dimers improved their mechanical properties and induced different architectures. In addition, small-angle neutron scattering (SANS) measurements and rheology experiments revealed that the UPy-dimers into agarose backbone are able to reorganize in thinning aggregates. It is also demonstrated that the resulted UPy-agarose (AGA-UPy) motifs in surfaces can promote cell adhesion. Finally, the last approach showed the great potential for use of this novel material in bioadhesive scaffolds indicating that neural stem cells show a spreading bias in soft materials and that cell adhesion was enhanced for all UPy-modified sponges compared to the reference, i.e. unmodified sponges. Therefore, by functionalizing sponge surfaces with UPy-dimers, an adhesive supramolecular scaffold is built which opens the opportunity its use neural tissues regeneration.
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Affiliation(s)
- Luanda Lins
- Institute of Chemistry, University of Campinas (UNICAMP), Campinas, SP 13083-970, Brazil
| | - Florence Wianny
- Univ Lyon, Université Claude Bernard Lyon 1, INSERM, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Colette Dehay
- Univ Lyon, Université Claude Bernard Lyon 1, INSERM, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Jacques Jestin
- Laboratoire Léon Brillouin, UMR12, Bat 563 CEA Saclay, 91191 Gif sur Yvette Cedex, France
| | - Watson Loh
- Institute of Chemistry, University of Campinas (UNICAMP), Campinas, SP 13083-970, Brazil
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5
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Wianny F, Vezoli J. Transplantation in the nonhuman primate MPTP model of Parkinson's disease: update and perspectives. Primate Biol 2017; 4:185-213. [PMID: 32110706 PMCID: PMC7041537 DOI: 10.5194/pb-4-185-2017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Accepted: 08/31/2017] [Indexed: 12/22/2022] Open
Abstract
In order to calibrate stem cell exploitation for cellular therapy in neurodegenerative diseases, fundamental and preclinical research in NHP (nonhuman primate) models is crucial. Indeed, it is consensually recognized that it is not possible to directly extrapolate results obtained in rodent models to human patients. A large diversity of neurological pathologies should benefit from cellular therapy based on neural differentiation of stem cells. In the context of this special issue of Primate Biology on NHP stem cells, we describe past and recent advances on cell replacement in the NHP model of Parkinson's disease (PD). From the different grafting procedures to the various cell types transplanted, we review here diverse approaches for cell-replacement therapy and their related therapeutic potential on behavior and function in the NHP model of PD.
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Affiliation(s)
- Florence Wianny
- Univ Lyon, Université Claude Bernard Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Julien Vezoli
- Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, 60528 Frankfurt, Germany
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6
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Lins LC, Wianny F, Livi S, Hidalgo IA, Dehay C, Duchet-Rumeau J, Gérard JF. Development of Bioresorbable Hydrophilic–Hydrophobic Electrospun Scaffolds for Neural Tissue Engineering. Biomacromolecules 2016; 17:3172-3187. [DOI: 10.1021/acs.biomac.6b00820] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Luanda Chaves Lins
- Ingénierie
des Matériaux Polymères CNRS, UMR 5223; INSA Lyon, Université de Lyon, F-69621 Villeurbanne, France
| | - Florence Wianny
- Inserm,
Stem Cell and Brain Research Institute U1208, Univ Lyon, Université Claude Bernard Lyon 1, 69500 Bron, France
| | - Sébastien Livi
- Ingénierie
des Matériaux Polymères CNRS, UMR 5223; INSA Lyon, Université de Lyon, F-69621 Villeurbanne, France
| | - Idalba Andreina Hidalgo
- Ingénierie
des Matériaux Polymères CNRS, UMR 5223; INSA Lyon, Université de Lyon, F-69621 Villeurbanne, France
| | - Colette Dehay
- Inserm,
Stem Cell and Brain Research Institute U1208, Univ Lyon, Université Claude Bernard Lyon 1, 69500 Bron, France
| | - Jannick Duchet-Rumeau
- Ingénierie
des Matériaux Polymères CNRS, UMR 5223; INSA Lyon, Université de Lyon, F-69621 Villeurbanne, France
| | - Jean-François Gérard
- Ingénierie
des Matériaux Polymères CNRS, UMR 5223; INSA Lyon, Université de Lyon, F-69621 Villeurbanne, France
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7
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Lins LC, Wianny F, Livi S, Dehay C, Duchet-Rumeau J, Gérard JF. Effect of polyvinylidene fluoride electrospun fiber orientation on neural stem cell differentiation. J Biomed Mater Res B Appl Biomater 2016; 105:2376-2393. [PMID: 27571576 DOI: 10.1002/jbm.b.33778] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Revised: 06/29/2016] [Accepted: 08/14/2016] [Indexed: 12/17/2022]
Abstract
Electrospun polymer piezoelectric fibers can be used in neural tissue engineering (NTE) to mimic the physical, biological, and material properties of the native extracellular matrix. In this work, we have developed scaffolds based on polymer fiber architectures for application in NTE. To study the role of such three-dimensional scaffolds, a rotating drum collector was used for electrospinning poly(vinylidene) fluoride (PVDF) polymer at various rotation speeds. The morphology, orientation, polymorphism, as well as the mechanical behavior of the nonaligned and aligned fiber-based architectures were characterized. We have demonstrated that the jet flow and the electrostatic forces generated by electrospinning of PVDF induced local conformation changes which promote the generation of the β-phase. Fiber anisotropy could be a critical feature for the design of suitable scaffolds for NTEs. We thus assessed the impact of PVDF fiber alignment on the behavior of monkey neural stem cells (NSCs). NSCs were seeded on nonaligned and aligned scaffolds and their morphology, adhesion, and differentiation capacities into the neuronal and glial pathways were studied using microscopic techniques. Significant changes in the growth and differentiation capacities of NSCs into neuronal and glial cells as a function of the fiber alignment were evidenced. These results demonstrate that PVDF scaffolds may serve as instructive scaffolds for NSC survival and differentiation, and may be valuable tools for the development of cell- and scaffold-based strategies for neural repair. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 2376-2393, 2017.
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Affiliation(s)
- Luanda C Lins
- Université de Lyon, Ingénierie des Matériaux Polymères CNRS, UMR 5223; INSA Lyon, F-69621, Villeurbanne, France
| | - Florence Wianny
- Univ Lyon, Université Claude Bernard Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, 69500, Bron, France
| | - Sebastien Livi
- Université de Lyon, Ingénierie des Matériaux Polymères CNRS, UMR 5223; INSA Lyon, F-69621, Villeurbanne, France
| | - Colette Dehay
- Univ Lyon, Université Claude Bernard Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, 69500, Bron, France
| | - Jannick Duchet-Rumeau
- Université de Lyon, Ingénierie des Matériaux Polymères CNRS, UMR 5223; INSA Lyon, F-69621, Villeurbanne, France
| | - Jean-François Gérard
- Université de Lyon, Ingénierie des Matériaux Polymères CNRS, UMR 5223; INSA Lyon, F-69621, Villeurbanne, France
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8
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Wianny F, Blachère T, Godet M, Guillermas R, Cortay V, Bourillot PY, Lefèvre A, Savatier P, Dehay C. Epigenetic status of H19/IGF2 and SNRPN imprinted genes in aborted and successfully derived embryonic stem cell lines in non-human primates. Stem Cell Res 2016; 16:557-67. [DOI: 10.1016/j.scr.2016.03.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Revised: 03/04/2016] [Accepted: 03/07/2016] [Indexed: 12/20/2022] Open
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9
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Aksoy I, Giudice V, Delahaye E, Wianny F, Aubry M, Mure M, Chen J, Jauch R, Bogu GK, Nolden T, Himmelbauer H, Xavier Doss M, Sachinidis A, Schulz H, Hummel O, Martinelli P, Hübner N, Stanton LW, Real FX, Bourillot PY, Savatier P. Klf4 and Klf5 differentially inhibit mesoderm and endoderm differentiation in embryonic stem cells. Nat Commun 2014; 5:3719. [PMID: 24770696 DOI: 10.1038/ncomms4719] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Accepted: 03/24/2014] [Indexed: 01/04/2023] Open
Abstract
Krüppel-like factors (Klf) 4 and 5 are two closely related members of the Klf family, known to play key roles in cell cycle regulation, somatic cell reprogramming and pluripotency. Here we focus on the functional divergence between Klf4 and Klf5 in the inhibition of mouse embryonic stem (ES) cell differentiation. Using microarrays and chromatin immunoprecipitation coupled to ultra-high-throughput DNA sequencing, we show that Klf4 negatively regulates the expression of endodermal markers in the undifferentiated ES cells, including transcription factors involved in the commitment of pluripotent stem cells to endoderm differentiation. Knockdown of Klf4 enhances differentiation towards visceral and definitive endoderm. In contrast, Klf5 negatively regulates the expression of mesodermal markers, some of which control commitment to the mesoderm lineage, and knockdown of Klf5 specifically enhances differentiation towards mesoderm. We conclude that Klf4 and Klf5 differentially inhibit mesoderm and endoderm differentiation in murine ES cells.
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Affiliation(s)
- Irène Aksoy
- 1] Inserm, U846, 18 Avenue Doyen Lepine, Bron 69500, France [2] Stem Cell and Brain Research Institute, Bron 69500, France [3] Université de Lyon, Université Lyon 1, Lyon 69003, France [4] Genome Institute of Singapore, 60 Biopolis street, Singapore 138672, Singapore [5]
| | - Vincent Giudice
- 1] Inserm, U846, 18 Avenue Doyen Lepine, Bron 69500, France [2] Stem Cell and Brain Research Institute, Bron 69500, France [3] Université de Lyon, Université Lyon 1, Lyon 69003, France [4]
| | - Edwige Delahaye
- 1] Inserm, U846, 18 Avenue Doyen Lepine, Bron 69500, France [2] Stem Cell and Brain Research Institute, Bron 69500, France [3] Université de Lyon, Université Lyon 1, Lyon 69003, France
| | - Florence Wianny
- 1] Inserm, U846, 18 Avenue Doyen Lepine, Bron 69500, France [2] Stem Cell and Brain Research Institute, Bron 69500, France [3] Université de Lyon, Université Lyon 1, Lyon 69003, France
| | - Maxime Aubry
- 1] Inserm, U846, 18 Avenue Doyen Lepine, Bron 69500, France [2] Stem Cell and Brain Research Institute, Bron 69500, France [3] Université de Lyon, Université Lyon 1, Lyon 69003, France
| | - Magali Mure
- 1] Inserm, U846, 18 Avenue Doyen Lepine, Bron 69500, France [2] Stem Cell and Brain Research Institute, Bron 69500, France [3] Université de Lyon, Université Lyon 1, Lyon 69003, France
| | - Jiaxuan Chen
- Genome Institute of Singapore, 60 Biopolis street, Singapore 138672, Singapore
| | - Ralf Jauch
- 1] Genome Institute of Singapore, 60 Biopolis street, Singapore 138672, Singapore [2] Genome Regulation Laboratory, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China
| | - Gireesh K Bogu
- Genome Institute of Singapore, 60 Biopolis street, Singapore 138672, Singapore
| | - Tobias Nolden
- Max Planck Institute for Molecular Genetics, Ihnestrasse 63-73, 14195 Berlin, Germany
| | - Heinz Himmelbauer
- 1] Max Planck Institute for Molecular Genetics, Ihnestrasse 63-73, 14195 Berlin, Germany [2] Center for Genomic Regulation (CRG), C. Dr. Aiguader 88, Barcelona 08003, Spain [3] Universitat Pompeu Fabra (UPF), C. Dr. Aiguader 88, Barcelona 08003, Spain
| | - Michael Xavier Doss
- 1] Universitat Pompeu Fabra (UPF), C. Dr. Aiguader 88, Barcelona 08003, Spain [2]
| | - Agapios Sachinidis
- Center of Physiology and Pathophysiology, Institute of Neurophysiology, Robert-Koch-Strasse. 39, Cologne 50931, Germany
| | - Herbert Schulz
- Max Delbrück Center for Molecular Medicine, Robert-Rössle-Strasse 10, Berlin 13125, Germany
| | - Oliver Hummel
- Max Delbrück Center for Molecular Medicine, Robert-Rössle-Strasse 10, Berlin 13125, Germany
| | - Paola Martinelli
- Centro Nacional de Investigaciones Oncológicas, Melchor Fernández Almagro 3, Madrid 28029, Spain
| | - Norbert Hübner
- Max Delbrück Center for Molecular Medicine, Robert-Rössle-Strasse 10, Berlin 13125, Germany
| | - Lawrence W Stanton
- Genome Institute of Singapore, 60 Biopolis street, Singapore 138672, Singapore
| | - Francisco X Real
- 1] Centro Nacional de Investigaciones Oncológicas, Melchor Fernández Almagro 3, Madrid 28029, Spain [2] Departament de Ciències Experimentals i de la Salut, Universitat Pompeu Fabra, Barcelona 08002, Spain
| | - Pierre-Yves Bourillot
- 1] Inserm, U846, 18 Avenue Doyen Lepine, Bron 69500, France [2] Stem Cell and Brain Research Institute, Bron 69500, France [3] Université de Lyon, Université Lyon 1, Lyon 69003, France
| | - Pierre Savatier
- 1] Inserm, U846, 18 Avenue Doyen Lepine, Bron 69500, France [2] Stem Cell and Brain Research Institute, Bron 69500, France [3] Université de Lyon, Université Lyon 1, Lyon 69003, France
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10
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Wianny F, Bourillot PY, Dehay C. Embryonic stem cells in non-human primates: An overview of neural differentiation potential. Differentiation 2011; 81:142-52. [PMID: 21296479 DOI: 10.1016/j.diff.2011.01.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2010] [Revised: 12/18/2010] [Accepted: 01/11/2011] [Indexed: 12/11/2022]
Abstract
Non-human primate (NHP) embryonic stem (ES) cells show unlimited proliferative capacities and a great potential to generate multiple cell lineages. These properties make them an ideal resource both for investigating early developmental processes and for assessing their therapeutic potential in numerous models of degenerative diseases. They share the same markers and the same properties with human ES cells, and thus provide an invaluable transitional model that can be used to address the safety issues related to the clinical use of human ES cells. Here, we review the available information on the derivation and the specific features of monkey ES cells. We comment on the capacity of primate ES cells to differentiate into neural lineages and the current protocols to generate self-renewing neural stem cells. We also highlight the signalling pathways involved in the maintenance of these neural cell types. Finally, we discuss the potential of monkey ES cells for neuronal differentiation.
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Affiliation(s)
- Florence Wianny
- Inserm, U846, Stem Cell and Brain Research Institute, 18 Avenue Doyen Lépine, 69500 Bron, France.
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Bourillot PY, Aksoy I, Schreiber V, Wianny F, Schulz H, Hummel O, Hubner N, Savatier P. Novel STAT3 target genes exert distinct roles in the inhibition of mesoderm and endoderm differentiation in cooperation with Nanog. Stem Cells 2010; 27:1760-71. [PMID: 19544440 DOI: 10.1002/stem.110] [Citation(s) in RCA: 151] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Leukemia inhibitory factor (LIF) activates the transcription factor signal transducer and activator of transcription 3 (STAT3), which results in the maintenance of mouse embryonic stem cells in the pluripotent state by inhibiting both mesodermal and endodermal differentiation. How the LIF/STAT3 pathway inhibits commitment to both mesoderm and endoderm lineages is presently unknown. Using a hormone-dependent STAT3 and with microarray analysis, we identified 58 targets of STAT3 including 20 unknown genes. Functional analysis showed that 22 among the 23 STAT3 target genes analyzed contribute to the maintenance of the undifferentiated state, as evidenced by an increase in the frequency of differentiated colonies in a self-renewal assay and a concomitant elevation of early differentiation markers upon knockdown. Fourteen of them, including Dact1, Klf4, Klf5, Rgs16, Smad7, Ccrn4l, Cnnm1, Ocln, Ier3, Pim1, Cyr61, and Sgk, were also regulated by Nanog. Analysis of lineage-specific markers showed that the STAT3 target genes fell into three distinct categories, depending on their capacity to inhibit either mesoderm or endoderm differentiation or both. The identification of genes that harness self-renewal and are downstream targets of both STAT3 and Nanog shed light on the mechanisms underlying functional redundancy between STAT3 and Nanog in mouse embryonic stem cells.
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Wianny F, Bernat A, Huissoud C, Marcy G, Markossian S, Cortay V, Giroud P, Leviel V, Kennedy H, Savatier P, Dehay C. Derivation and cloning of a novel rhesus embryonic stem cell line stably expressing tau-green fluorescent protein. Stem Cells 2008; 26:1444-53. [PMID: 18356572 DOI: 10.1634/stemcells.2007-0953] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Embryonic stem cells (ESC) have the ability of indefinite self-renewal and multilineage differentiation, and they carry great potential in cell-based therapies. The rhesus macaque is the most relevant preclinical model for assessing the benefit, safety, and efficacy of ESC-based transplantations in the treatment of neurodegenerative diseases. In the case of neural cell grafting, tracing both the neurons and their axonal projections in vivo is essential for studying the integration of the grafted cells in the host brain. Tau-Green fluorescent protein (tau-GFP) is a powerful viable lineage tracer, allowing visualization of cell bodies, dendrites, and axons in exquisite detail. Here, we report the first rhesus monkey ESC line that ubiquitously and stably expresses tau-GFP. First, we derived a new line of rhesus monkey ESC (LYON-ES1) that show marker expression and cell cycle characteristics typical of primate ESCs. LYON-ES1 cells are pluripotent, giving rise to derivatives of the three germ layers in vitro and in vivo through teratoma formation. They retain all their undifferentiated characteristics and a normal karyotype after prolonged culture. Using lentiviral infection, we then generated a monkey ESC line stably expressing tau-GFP that retains all the characteristics of the parental wild-type line and is clonogenic. We show that neural precursors derived from the tau-GFP ESC line are multipotent and that their fate can be precisely mapped in vivo after grafting in the adult rat brain. Disclosure of potential conflicts of interest is found at the end of this article.
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Affiliation(s)
- Florence Wianny
- Institut National de la Santé et de la Recherche Médicale, U846 Stem Cell and Brain Research Institute, Bron, France
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Grabarek JB, Wianny F, Plusa B, Zernicka-Goetz M, Glover DM. RNA interference by production of short hairpin dsRNA in ES cells, their differentiated derivatives, and in somatic cell lines. Biotechniques 2003; 34:734-6, 739-44. [PMID: 12703298 DOI: 10.2144/03344st02] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
dsRNA of several hundred nucleotides in length is effective at interfering with gene expression in mouse oocytes, pre-implantation embryos, and embryonic stem (ES) cells but is not as efficient in differentiated cell lines. Here we describe a method to achieve RNA interference in totipotent and differentiated ES cells together with a wide range of other mammalian cell types that is both simple and efficient. It utilizes a linearized plasmid that directs the expression of a hairpin RNA with a 22-nucleotide-paired region. This molecule has a 13-nucleotide 5' overhang that would be subject to capping on its 5' phosphoryl group and thus differs from the ideal structure suggested for effective small interfering RNAs. Thus, it appears either that the structure of small inhibitory RNA molecules may not need to be as precise as previously thought or that such a transcript is efficiently processed to a form that is effective in interfering with gene expression.
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Abstract
Embryonic germ cells (EGCs) derived from mouse primordial germ cells (PGCs) are known both to colonize all cell lineages of the fetus and to make tumors in vivo. When aggregated with eight-cell embryos, EGCs from a new EGC line expressing green fluorescent protein (GFP) were found to contribute preferentially to the epiblast but unexpectedly were also capable of colonizing primary endoderm. When injected under the kidney capsule, EGCs derived from 12.5 days post coitum (dpc) PGCs formed differentiated tumors. The ability of EGCs to differentiate in an organ culture system depends upon their partners in cell culture. When EGCs, marked with a LacZ transgene, were mixed with disaggregated and reaggregated mouse fetal lung in an organ culture system, they remained undifferentiated. In urogenital ridge reaggregates on the other hand, some EGCs were capable of differentiating to form small epithelial cysts.
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Affiliation(s)
- Gabriela Durcova-Hills
- The Wellcome Trust/Cancer Research UK Institute of Cancer and Development Biology, Cambridge, UK
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Piotrowska K, Wianny F, Pedersen RA, Zernicka-Goetz M. Blastomeres arising from the first cleavage division have distinguishable fates in normal mouse development. Development 2001; 128:3739-48. [PMID: 11585800 DOI: 10.1242/dev.128.19.3739] [Citation(s) in RCA: 157] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Two independent studies have recently suggested similar models in which the embryonic and abembryonic parts of the mouse blastocyst become separated already by the first cleavage division. However, no lineage tracing studies carried out so far on early embryos provide the support for such a hypothesis. Thus, to re-examine the fate of blastomeres of the two-cell mouse embryo, we have undertaken lineage tracing studies using a non-perturbing method. We show that two-cell stage blastomeres have a strong tendency to develop into cells that comprise either the embryonic or the abembryonic parts of the blastocyst. Moreover, the two-cell stage blastomere that is first to divide will preferentially contribute its progeny to the embryonic part. Nevertheless, we find that the blastocyst embryonic-abembryonic axis is not perfectly orthogonal to the first cleavage plane, but often shows some angular displacement from it. Consequently, there is a boundary zone adjacent to the interior margin of the blastocoel that is populated by cells derived from both earlier and later dividing blastomeres. The majority of cells that inhabit this boundary region are, however, derived from the later dividing two-cell stage blastomere that contributes predominantly to the abembryonic part of the blastocyst. Thus, at the two-cell stage it is already possible to predict which cell will contribute a greater proportion of its progeny to the abembryonic part of the blastocyst (region including the blastocyst cavity) and which to the embryonic part (region containing the inner cell mass) that will give rise to the embryo proper.
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Affiliation(s)
- K Piotrowska
- Wellcome/CRC Institute and Department of Genetics, University of Cambridge, Tennis Court Road, Cambridge CB2 1QR, UK
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Abstract
The use of double-stranded (ds) RNA is a powerful way of interfering with gene expression in a range of organisms, but doubts have been raised about whether it could be successful in mammals. Here, we show that dsRNA is effective as a specific inhibitor of the function of three genes in the mouse, namely maternally expressed c-mos in the oocyte and zygotically expressed E-cadherin or a GFP transgene in the preimplantation embryo. The phenotypes observed are the same as those reported for null mutants of the endogenous genes. These findings offer the opportunity to study development and gene regulation in normal and diseased cells.
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Affiliation(s)
- F Wianny
- Wellcome/CRC Institute and Department of Genetics, University of Cambridge, Tennis Court Road, Cambridge CB2 1QR, UK
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Wianny F, Zernicka-Goetz M. Inactivation de l'expression génique par l'ARN double-brin chez la souris. Med Sci (Paris) 2000. [DOI: 10.4267/10608/1774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Abstract
In most species, the polarity of an embryo underlies the future body plan and is determined from that of the zygote. However, mammals are thought to be an exception to this; in the mouse, polarity is generally thought to develop significantly later, only after implantation. It has not been possible, however, to relate the polarity of the preimplantation mouse embryo to that of the later conceptus due to the lack of markers that endure long enough to follow lineages through implantation. To test whether early developmental events could provide cues that predict the axes of the postimplantation embryo, we have used the strategy of injecting mRNA encoding an enduring marker to trace the progeny of inner cell mass cells into the postimplantation visceral endoderm. This tissue, although it has an extraembryonic fate, plays a role in axis determination in adjacent embryonic tissue. We found that visceral endoderm cells that originated near the polar body (a marker of the blastocyst axis of symmetry) generally became distal as the egg cylinder formed, while those that originated opposite the polar body tended to become proximal. It follows that, in normal development, bilateral symmetry of the mouse blastocyst anticipates the polarity of the later conceptus. Moreover, our results show that transformation of the blastocyst axis of symmetry into the axes of the postimplantation conceptus involves asymmetric visceral endoderm cell movement. Therefore, even if the definitive axes of the mouse embryo become irreversibly established only after implantation, this polarity can be traced back to events before implantation.
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Affiliation(s)
- R J Weber
- Wellcome/CRC Institute and Department of Genetics, University of Cambridge, Cambridge, UK
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Wianny F, Tavares A, Evans MJ, Glover DM, Zernicka-Goetz M. Mouse polo-like kinase 1 associates with the acentriolar spindle poles, meiotic chromosomes and spindle midzone during oocyte maturation. Chromosoma 1998; 107:430-9. [PMID: 9914375 DOI: 10.1007/s004120050327] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
We have examined the dynamics of the localisation of the polo-like kinase 1 (Plk1) during maturation of the mouse oocyte. Levels of Plk1 protein increase following germinal vesicle breakdown, at which time the enzyme begins to accumulate at discrete positions on the condensing chromosomes and, subsequently, at the poles of the meiotic spindle, which moves towards the cortex of the egg. Interestingly, at metaphase in both meiotic divisions, Plk1 shows a punctate localisation along the broad spindle poles. Moreover, the punctate distribution of Plk1 on the meiotic chromosomes appears at early anaphase to correspond to the centromeric regions. The protein relocates to the spindle midzone during late anaphase and then associates with the midbody at telophase. We have confirmed the specific pattern of immuno-localisation seen in fixed preparations by observing the distribution of Plk1 tagged with green fluorescent protein in living oocytes. We discuss the localisation of the enzyme in light of the structure of the spindle poles, which are known to lack centrioles, and the highly asymmetric nature of the meiotic divisions.
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Affiliation(s)
- F Wianny
- Wellcome-CRC Institute and Department of Genetics, Tennis Court Road, Cambridge CB2 1QR, UK
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Goumans MJ, Ward-van Oostwaard D, Wianny F, Savatier P, Zwijsen A, Mummery C. Mouse embryonic stem cells with aberrant transforming growth factor beta signalling exhibit impaired differentiation in vitro and in vivo. Differentiation 1998; 63:101-13. [PMID: 9697304 DOI: 10.1046/j.1432-0436.1998.6330101.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Embryonic stem (ES) cells are resistant to transforming growth factor beta (TGF beta). We have shown previously that they lack type-II binding receptors (T beta RII) and in this respect resemble the inner cell mass and ectoderm cells of mouse embryos 4.5-7.5 days post coitum (dpc); they do however express type-I (alk-5) signalling receptors. Here we show that in contrast to several tumour cell lines, stable transfection of wtT beta RII is not sufficient for ES cells to become biologically sensitive to TGF beta. We analysed the expression of several down-stream molecules known to be involved in TGF beta signalling (Smads) and TGF beta-mediated cell cycle regulation (cyclins D) during the differentiation of control and wtT beta RII-expressing ES cells and showed that upregulation of these molecules correlated with (i) an increase in plasminogen activator inhibitor-1 (PAI-1) synthesis and (ii) growth inhibition, following addition of TGF beta 1. These TGF beta responses were reduced in an ES cell line expressing a dominant negative (truncated) T beta RII (delta T beta RII). The differentiation pattern of control and wtT beta RII-expressing ES cells was indistinguishable in monolayer culture and as embryoid bodies, but in delta T beta RII ES cells, the capacity to form mesodermal derivatives in monolayer cultures in response to the addition of retinoic acid (RA) and removal of leukemia inhibitory factor (LIF) was lost, and only endoderm-like cells formed. The T beta RII and delta T beta RII ES cells were, however, both distinguishable from control ES cells when allowed to differentiate in chimaeric embryos following aggregation with morula-stage hosts. Conceptuses containing mutant cells, recovered from pseudopregnant females at the equivalent of 9.5 dpc, exhibited highly defective yolk sac development; most strikingly, no blood vessels were present and in addition the yolk sacs with derivatives of ES cells containing wtT beta RII were blistered and lacked haematopoietic cells. The implications for understanding TGF beta signalling in early mouse development are discussed.
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Affiliation(s)
- M J Goumans
- Hubrecht Laboratory, Netherlands Institute for Developmental Biology, Utrecht, The Netherlands
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Wianny F, Real FX, Mummery CL, Van Rooijen M, Lahti J, Samarut J, Savatier P. G1-phase regulators, cyclin D1, cyclin D2, and cyclin D3: up-regulation at gastrulation and dynamic expression during neurulation. Dev Dyn 1998; 212:49-62. [PMID: 9603423 DOI: 10.1002/(sici)1097-0177(199805)212:1<49::aid-aja5>3.0.co;2-2] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Gastrulation in rodents is associated with an increase in the rate of growth and with the start of differentiation within the embryo proper. In an effort to understand the role played by the cell cycle control in these processes, expression of cyclin D1, D2, and D3--three major positive regulators of the G1/S transition--has been investigated by in situ hybrization and RT-PCR. Cyclin D1 and D2 transcripts are first detected in the epiblast at gastrulation, when a proliferative burst occurs, and subsequently in its differentiated derivatives within the embryo proper, indicating that activation of their expression takes place prior to the differentiation of epiblast progenitors. In contrast, cyclin D3 transcript is undetectable in the epiblast itself and its expression is activated exclusively in extraembryonic tissues of both epiblast and trophoblast origin. During neurulation, expression of each cyclin D RNA is dynamically regulated along the anterior-posterior axis. In the hindbrain, cyclin D1 and D2 show distinct segment-specific restricted expression and this pattern is conserved between mouse and chick. These results strongly suggest that D-type cyclins act as developmental regulators.
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Affiliation(s)
- F Wianny
- Laboratoire de Biologie Moléculaire et Cellulaire, UMR 49 CNRS, LA INRA 913, Ecole Normale Supérieure de Lyon, France
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Abstract
The proliferation rate and differentiation state were investigated in porcine inner cell masses (ICMs) and epiblasts in vitro. ICMs isolated from early blastocysts (Day 7 of pregnancy) and epiblasts isolated from preelongated blastocysts (Day 11 of pregnancy) were cultured for up to 5 days in the presence of human leukemia inhibitory factor (hLIF) (1000 U/ml). The proliferation rate was evaluated by determination of the percentage of cells in S-phase. The differentiation state was determined by studying the expression of the stage-specific embryonic antigen-1 (SSEA-1), a marker for undifferentiated murine embryonic stem (ES) cells, and the expression of laminin and cytokeratins 8/18, markers of ES cell differentiation. The staining pattern showed that freshly collected Day 11 epiblasts appeared undifferentiated but rapidly lost this characteristic in vitro. A decrease in the proliferation rate was also observed during culture. This decrease was reduced in the presence of high concentrations of hLIF (optimal concentrations: 5000 U/ml). Conversely, treatment of Day 11 epiblast cells with retinoic acid, an agent known to induce differentiation in murine ES cells, caused a dramatic decrease in the proliferation rate in vitro. In contrast to Day 11 epiblasts, Day 7 ICMs expressed SSEA-1 in vitro and showed a higher proliferation rate (p < 0.01). However, their proliferation rate also decreased during culture and following trypsinization. These results indicate that the undifferentiated characteristics of Day 7 ICMs are more likely to be maintained in vitro than are those of Day 11 epiblasts, which are rapidly committed into early differentiation.
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Affiliation(s)
- F Wianny
- INRA, URA-CNRS 1291, Nouzilly, France.
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Wianny F, Savatier P, Hochereau de Reviers M, Samarut J. A study of cyclin Ds expression during development in the mouse and pig: Implication for embryonic stem cells derivation in the pig. Theriogenology 1997. [DOI: 10.1016/s0093-691x(97)82374-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Perreau C, Wianny F, Hochereau-de Reviers MT. Microinjection of ICM cells in recipient porcine young blastocysts: Obtention of chimera. Theriogenology 1997. [DOI: 10.1016/s0093-691x(97)82456-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Wianny F, Staub C, Reviers HMT. Proliferation of cultured inner cell mass cells in the pig: variation with blastocyst age and differentiation. Biol Cell 1995. [DOI: 10.1016/0248-4900(96)81474-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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