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Submicron-grooved films modulate the directional alignment and biological function of Schwann cells

ABSTRACT: Submicron-grooved films modulate the directional alignment and biological function of Schwann cells

PROVIDER: PRJNA941892 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR23719626_1.fastq.gz	Fastqsanger.gz
	SRR23719626_2.fastq.gz	Fastqsanger.gz
	SRR23719627_1.fastq.gz	Fastqsanger.gz
	SRR23719627_2.fastq.gz	Fastqsanger.gz
	SRR23719628_1.fastq.gz	Fastqsanger.gz

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Submicron-grooved films modulate the directional alignment and biological function of Schwann cells

Project description:To investigate the differences in cell behavior and biological functions of Schwann cells on submicron grooved films and flat films, gene expression profiles of Schwann cells were analyzed. We then performed gene expression profiling analysis using data obtained from RNA-seq of Schwann cells at 5 days.

2023-04-23 | GSE226857 | GEO

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Sox2-dependent fibronectin fibrillogenesis controls directional collective migration of Schwann cells

Project description:The extracellular matrix is essential for tissue formation and regeneration through the control of cellular behavior. Deregulation of extracellular matrix components is associated to disease, including neurodegeneration. After peripheral nerve injury, Schwann cells guide regrowing axons to their targets. These glial cells migrate collectively and provide an extracellular environment to enable neural repair. How this occurs remains poorly understood. Here, we show that Sox2 controls fibronectin fibrillogenesis in Schwann cells to provide a highly oriented extracellular matrix, which supports their rapid collective migration with a continuous cellular flow. Sox2 directly activates fibronectin expression in Schwann cells, leading to an increase in fibrillogenesis and cellular huddling. Accordingly, loss of fibrillogenesis leads to glial disassembly and disorganized axon regrowth. In vivo, 7 days post nerve injury, we found that pro-regenerative Schwann cells co-express Sox2 and the EIIIA-containing fibronectin splicing isoform. This mechanism is conserved in mammals, including humans, but absent in zebrafish. Taken together, our results demonstrate that Sox2 directly controls fibrillogenesis and provide a novel mechanism for the modification of the environmental architecture by glial cells during neuronal repair.

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Human Bone Marrow Stromal Cells cultured on 3D nanofiber scaffolds or 2D films

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Human Bone Marrow Stromal Cells cultured on 3D nanofiber scaffolds or 2D films

Project description:Microarray analysis was used to evaluate expression differences from a single donor human bone marrow stromal cells (hBMSCs) as a function of varied polymer-based tissue engineering scaffolds. These scaffolds include polycaprolactone (PCL) nanofibers (PCL_NF), films (PCL_SC), poly D,L-lactic acid (PDLLA) nanofibers (PDLLA_NF), films (PDLLA_SC), tissue culture polystyrene (TCPS) and TCPS with osteogenic supplements (TCPS_OS). The results revealed that scaffold structure was able to significantly affect gene expression, with nanofiber scaffolds inducing similar gene expression patterns to hBMCSs cultured with osteogenic media. A library of scaffolds prepared from polycaprolactone or poly D,L-lactic acid was sythesized and cultured with hBMSCs for 14 days with RNA extracted from cells on Day 1 and Day 14. Gene expression analysis was performed using BRB ArrayTools. SC = spun coat, BNF = big nanofiber, TCPS = tissue culture polystyrene, TCPS+OS = tissue culture polystyrene with osteogenic supplements. This data forms is part of a pending publication: Baker et al. Ontology Analysis of Global Gene Expression Differences of Human Bone Marrow Stromal Cells Cultured on 3D Scaffolds or 2D Films and is a subset of the 72 array data referenced in ( Kumar et al. The determination of stem cell fate by 3D scaffold structures through the control of cell shape, Biomaterials (2011) 32, 9188-9196.) The 72 array data set is submitted separately to GEO as GSE50743.

2013-11-01 | E-GEOD-50744 | biostudies-arrayexpress

Schwann cell condition medium MS

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2023-06-27 | PXD042556 | Pride

Transcriptomic analysis reveals the heterogeneous role of conducting films upon electrical stimulation

Project description:Central nervous system (CNS) injuries and neurodegenerative diseases have markedly poor prognoses and can result in permanent dysfunction due to the general inability of CNS neurons to regenerate. Differentiation of transplanted stem cells has emerged as a therapeutic avenue to regenerate tissue architecture in damaged areas. Electrical stimulation is a promising approach for directing the differentiation outcomes and pattern of outgrowth of transplanted stem cells, however traditional inorganic bio-electrodes can induce adverse effects such as inflammation. Here, we demonstrate the implementation of two organic thin films, a polymer/reduced graphene oxide nanocomposite (P(rGO)) and PEDOT:PSS, that have favorable properties for implementation as conductive materials for electrical stimulation, as well as an inorganic indium tin oxide (ITO) conductive film. Transcriptomic analysis revealed that electrical stimulation improved neuronal differentiation of SH-SY5Y cells on all three films, with the greatest effect for P(rGO). Unique material- and electrical stimuli-mediated effects were observed, associated with differentiation, cell-substrate adhesion, and translation. Our work demonstrates that P(rGO) and PEDOT:PSS are highly promising organic materials for the development of biocompatible, conductive scaffolds that will enhance electrically-aided stem cell therapeutics for CNS injuries and neurodegenerative diseases.

2024-09-05 | GSE261580 | GEO

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