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Homo sapiens

ABSTRACT: Characterization of distinct classes of differential gene expression in osteoblast cultures from non-syndromic craniosynostosis bone

OTHER RELATED OMICS DATASETS IN: E-GEOD-55282

PROVIDER: PRJNA239198 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR1175190_1.fastq.gz	Fastqsanger.gz
	SRR1175190_2.fastq.gz	Fastqsanger.gz
	SRR1175200_1.fastq.gz	Fastqsanger.gz
	SRR1175200_2.fastq.gz	Fastqsanger.gz
	SRR1175210_1.fastq.gz	Fastqsanger.gz

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E-GEOD-55282

Project description:Transcription profiling by high throughput sequencing in osteoblast cultures from non-syndromic craniosynostosis bone

2025-01-24 | E-GEOD-55282 | ExpressionAtlas

Characterization of distinct classes of differential gene expression in osteoblast cultures from non-syndromic craniosynostosis bone

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Characterization of distinct classes of differential gene expression in osteoblast cultures from non-syndromic craniosynostosis bone

Project description:We report on explant osteoblast cultures from human patients, demonstrating that there are at least three sub-types of non-syndromic craniosynostosis defined by similarity of gene expression profiles. Osteoblast growth in culture, 23 craniosynostosis skull samples (7 metopic; 8 coronal; 3 lambdoid; 5 sagittal) and 8 normal (4 cranial bones and 4 long bones)

2014-07-16 | E-GEOD-55282 | biostudies-arrayexpress

Transcription profiling of human scalp fibroblasts in four craniosynostosis disease groups

Project description:Comparison of four craniosynostosis disease groups of 10 samples each: Apert syndrome (AS), Muenke syndrome (MS), Saetre-Chotzen syndrome (SCS), and non-syndromic craniosynostosis (NSS).

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Gene Expression Changes Between Patent and Fused Cranial Sutures in a Nonsyndromic Craniosynostosis Population

Project description:Assaying gene expression in sutural bone fragments from patients diagnosed with non-syndromic craniosynostosis. Sutural fragments were collected from both the fused and patent cranial suture of infants during cranial vault reconstruction. Gene expression was compared between the patent and fused sutures using the paired t-test. The aim was to identify thoses genes significantly differentially expressed in fused suture relative to patent.

2013-09-12 | GSE50796 | GEO

Gene Expression Changes Between Patent and Fused Cranial Sutures in a Nonsyndromic Craniosynostosis Population

2013-09-12 | E-GEOD-50796 | biostudies-arrayexpress

Comparative tissue gene expression profiling and alternative splicing by exon-sensitive microarrays in non-syndromic craniosynostosis

Project description:Craniosynostosis (CS) is the congenital premature fusion of one or more cranial sutures and represents the more prevalent craniofacial malformation in humans, with an overall incidence of 1 out of 2000-3000 live births. Non-syndromic craniosynostoses (NSC) are believed to be multifactorial disorders, with a strong genetic component, due to possible gene–gene or gene–environment interactions that remain to be clearly identified. In this study we delved into the molecular signaling acting in calvarial tissue and cells from patients affected by nonsynodromic midline craniosynostosis, using a comparative analysis between fused and unfused sutures of each affected individuals. Using comparative microarray tissue gene expression profiling we have identified a subset of genes involved in the structure and function of the primary cilium, including the Bardet-Biedl syndrome 9 (BBS9) gene, which was recently associated to sagittal synostosis in a GWAS study. We therefore characterized BBS9 expression and cilium-related signaling in cells isolated from patients’ calvarial bone.

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BMP-dependent cellular dynamics during cranial suture establishment in zebrafish

Project description:Cranial sutures separate neighboring skull bones and contain skeletal stem cells that drive bone growth. A key question is how osteogenic activity is controlled to promote bone growth while preventing aberrant bone fusions during skull expansion. Here we integrate single-cell transcriptomics, in vivo expression validation, photoconversion-based lineage tracing, and a zebrafish craniosynostosis model to uncover key developmental transitions regulating bone formation during skull expansion. In addition to conservation of meninges and osteoblast lineage cells between zebrafish and mouse, single-cell transcriptomic analysis of the zebrafish skull reveals distinct subpopulations of suture mesenchyme that undergo transcriptomic changes during suture establishment. While lineage tracing with an osteoblast-specific nlsEOS reporter shows that bone formation largely occurs at suture edges, a subset of mesenchyme cells in the mid-suture region upregulate a suite of genes including BMP antagonists (e.g. grem1a) and pro-angiogenic factors. Further, lineage tracing with grem1a:nlsEOS reveals that this mid-suture subpopulation is largely non-osteogenic. In twist1b; tcf12 mutant zebrafish, a model for the coronal synostosis of Saethre-Chotzen Syndrome, reduction of grem1a+ mid-suture cells correlates with misregulated bone formation and reduced blood vessels at the coronal suture. In addition, combinatorial mutation of BMP antagonists enriched in the mid-suture subpopulation results in increased BMP signaling in the suture, misregulated bone formation, and abnormal suture morphology. These data support roles of a subset of mid-suture mesenchyme in locally promoting BMP antagonism that ensures proper suture morphology.

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The developing mouse coronal suture at single-cell resolution

Project description:Sutures separate the flat bones of the skull and enable coordinated growth of the brain and overlying cranium. In order to uncover the cellular diversity within sutures, we conducted single-cell transcriptomic and histological analyses of the embryonic murine coronal suture. We identify Erg and Pthlh as early markers of osteogenic progenitors in sutures, and distinct pre-osteoblast signatures between the bone fronts and periosteum. diverse mesenchymal layers at the coronal suture, including multiple distinct meningeal layers below the suture, and ligamentous, ectocranial, and hypodermal layers above the sutureIn the ectocranial layers above the suture, we observe a ligament-like population spanning the frontal and parietal bones and expressing genes implicated in mechanosensation. Mesenchyme in and around the coronal suture is asymmetrically distributed between the frontal and parietal bones, and we identify different states of osteogenic cells extending from the bone fronts into the more mature bone, and a potential signature for sutural stem cellsIn the meningeal layers, we detect a potential chondrogenic periosteal dura population that may be involved in endochondral ossification that closes sutures. Expression of genes mutated in craniosynostosis is spread across diverse cell types, suggesting multiple points at which homeostasis can fail. This single-cell atlas provides a resource to understand the development of the coronal suture, the suture most commonly fused in craniosynostosis.

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Proteomic signatures of extracellular vesicles secreted by non-mineralizing and mineralizing human osteoblasts and stimulation of tumor cell growth

Project description:Beyond forming bone, osteoblasts play pivotal roles in various biological processes, including hematopoiesis and bone metastasis. Extracellular vesicles (EVs) have recently been implicated in intercellular communication via transfer of proteins and nucleic acids between cells. Here, we focused on the proteomic characterization of non-mineralizing (NMOBs) and mineralizing (MOBs) human osteoblast (SV-HFOs) EVs and investigated their effect on human prostate cancer (PC3) cells by microscopic, proteomic and gene expression analyses. Proteomic analysis showed that 97% of the proteins were shared among NMOB and MOB EVs, and 30% were novel osteoblast-specific EV proteins. Label-free quantification demonstrated mineralization stage-dependent five-fold enrichment of 59 and 451 EV proteins in NMOBs and MOBs, respectively. Interestingly, bioinformatic analyses of the osteoblast EV proteomes and EV-regulated prostate cancer gene expression profiles showed that they converged on pathways involved in cell survival and growth. This was verified by in vitro proliferation assays where osteoblast EV uptake led to two-fold increase in PC3 cell growth compared to cell-free culture medium-derived vesicle controls. Our findings elucidate the mineralization stage-specific protein content of osteoblast-secreted EVs, show a novel way by which osteoblasts communicate with prostate cancer, and open up innovative avenues for therapeutic intervention. PC3 cells were treated with extracellular vesicles from non-mineralizing and mineralizing SV-HFOs for three different incubation times (4hrs, 24hrs, 48hr)

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