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Spatially patterned scaffolds enhances vascular organization and functional integration in volumetrc muscle loss

ABSTRACT: Spatially patterned scaffolds enhances vascular organization and functional integration in volumetrc muscle loss

PROVIDER: PRJNA524279 | ENA |

REPOSITORIES: ENA

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Spatially patterned scaffolds enhances vascular organization and functional integration in volumetrc muscle loss

Project description:We report the application of bioengineered skeletal muscle composed of murine skeletal myoblasts interspersed with human vascular endothelial cells (ECs) using spatially patterned scaffolds for the treatment of volumetric muscle loss. To gain insights into the molecular mechanisms by which spatial patterning promoted myo-angiogenesis, we performed mRNA sequencing of engineered muscle and endothelialized engineered muscle on either randomly-oriented or aligned scaffolds. The goals of this study are to compare NGS-derived transcriptome profiling (RNA-seq) from four groups: 1) randomly-oriented scaffold seeded with myoblasts; 2) randomly-oriented scaffolds seeded with myoblasts + ECs; 3) aligned scaffold seeded with myoblasts only; 4) aligned scaffold seeded with myoblasts + ECs. Samples were generated in triplicate and the NovaSeq 6000 (Illumina) sequencing platform was utilized. 150-bp paired-end reads were generated (20-30 million reads per sample). The raw data were checked for quality with FastQC (Version 0.11.7) and results were aggregated with MultiQC and were aligned to the mouse genome (GRCm38) using STAR (Version 2.5.3a) with ENCODE options for long RNA-seq pipeline. The alignment results were assessed using Samtools and aggregated with MultiQC (Version 1.5) and the differential gene expression analysis of the uniquely mapped reads/raw counts wwas performed using the DESeq2 package (Version 1.20.0). Each DE analysis was composed of a pairwise comparison between an experimental group and the control group. Differentially expressed genes were identified after false discovery rate (FDR = 0.05) correction.

2019-04-01 | GSE127171 | GEO

Treatment of volumetric muscle loss in mice using nanofibrillar scaffolds enhances vascular organization and integration.

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Improved vascular organization enhances functional integration of engineered skeletal muscle grafts.

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Phenotype modulation of VSMCs on patterned substrate

Project description:Loss of contractility and acquisition of an epithelial phenotype of vascular smooth muscle cells (VSMCs) are key events in proliferative vascular pathologies such as atherosclerosis and post-angioplastic restenosis. There is no proper cell culture system allowing VSMC differentiation so that it is difficult to delineate the molecular mechanism responsible for proliferative vasculopathy. We investigated whether a micro-patterned substrate could restore the contractile phenotype of VSMCs in vitro. To induce and maintain the differentiated VSMC phenotype in vitro, we introduced a micro-patterned groove substrate to modulate the morphology and function of VSMCs.

2013-11-14 | E-MTAB-1888 | biostudies-arrayexpress

Rehabilitative exercise and spatially patterned nanofibrillar scaffolds enhance vascularization and innervation following volumetric muscle loss.

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A pulmonary vascular model from endothelialized whole organ scaffolds

Project description:A pulmonary vascular model from endothelialized whole organ scaffolds

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Cell population kinetics of collagen scaffolds in ex vivo oral wound repair

Project description:This study sought to provide a novel ex vivo model for analyzing healing kinetics and gene expression of primary human gingival fibroblasts (hGF) within collagen scaffolds. Sponge type and gel type scaffolds with and without platelet-derived growth factor-BB (PDGF) were assessed in an hGF containing matrix. Four samples were analyzed; gel w/ and w/o PDGF and scaffold w/ and w/o PDGF

2014-09-11 | E-GEOD-61314 | biostudies-arrayexpress

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

Soy protein nanofiber scaffolds for uniform maturation of hiPSC-derived retinal pigment epithelium

Project description:Retinal pigment epithelial cells differentiated from human induced pluripotent stem cells (hiPSCs), called iRPE, are being explored as a cell-based therapy for the treatment of retinal degenerative diseases, especially age-related macular degeneration (AMD). The success of RPE implantation is believed to be linked to the use of biomimetic scaffolds that simulate Bruch’s membrane and aid in its maturation and integration. Current practices widely utilize fibrous scaffolds from synthetic polymers, such as polycaprolactone (PCL), rather than from natural biomaterials. Here, we tested the hypothesis that naturally derived fibrous scaffolds, with their unique translational potential, can provide favorable conditions permissive for the maturation of iRPE in vitro. We show that the culture of iRPE on natural, soy protein-derived nanofibrous scaffolds match the results of similar cells cultured on synthetic PCL nanofibrous scaffolds. The mechanical properties of soy scaffolds better emulate the native Bruch’s membrane, which would likely limit the foreign body reaction triggered by mismatch of host and biomaterial strength. Additionally, soy scaffolds exhibit unique biochemistry that improves biocompatibility and have tunable crosslinking to control degradation rates. Comparative transcriptome analysis demonstrates that iRPE maturation on nanofibrous scaffolds, either natural or synthetic, yielded more consistent outcomes than on other non-fibrous substrates. Taken together, our studies suggest that the maturation of cultured RPE for subsequent clinical applications will benefit from the use of nanofibrous scaffolds derived from natural proteins.

2020-07-10 | GSE153645 | GEO

Transcriptomics of rat arteriovenous fistulas treated with periadventitial beta-aminopropionitrile loaded scaffolds

Project description:We report the RNA expression profiles of rat AVF samples obtained 21 days after creation. We perfomed bulk RNA-seq on AVFs treated with beta-aminopropionitrile scaffolds or vehicle scaffolds.

2023-03-22 | GSE225412 | GEO

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