Roles of Runx2 in chromatin landscape in skeletal development
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA738367 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR14827300_1.fastq.gz | Fastqsanger.gz | |||
| SRR14827300_2.fastq.gz | Fastqsanger.gz | |||
| SRR14827301_1.fastq.gz | Fastqsanger.gz | |||
| SRR14827301_2.fastq.gz | Fastqsanger.gz | |||
| SRR14827302_1.fastq.gz | Fastqsanger.gz |
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Project description:The transcriptional regulator Runx2 has essential roles in chondrocytes and osteoblasts, central to the coordinated development of cartilage and bone. However, the regulatory mechanisms underlying Runx2’s roles in skeletal programming are not well understood. Here, we performed an integrative analysis of Runx2–DNA binding and chromatin accessibility in vivo and identified cell type-distinct chromatin accessibility underlying Runx2 roles in osteoblasts and chondrocytes.
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Project description:The transcriptional regulator Runx2 has essential roles in chondrocytes and osteoblasts, central to the coordinated development of cartilage and bone. However, the regulatory mechanisms underlying Runx2’s roles in skeletal programming are not well understood. Here, we performed an integrative analysis of Runx2–DNA binding and chromatin accessibility in vivo and identified cell type-distinct chromatin accessibility underlying Runx2 roles in osteoblasts and chondrocytes.
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Project description:This SuperSeries is composed of the SubSeries listed below.
2022-09-06 | GSE178293 | GEO
Project description:Smad4 is a central mediator of canonical TGF/BMP signaling and plays important roles in mesenchymal cell aggregation, chondrocyte differentiation, osteoblast differentiation and maturation. However, the regulatory mechanism of Smad4 underlying chondrocyte hypertrophy during skeletal development is unknown. To elucidate the molecular mechanism by which Smad4 deficiency impairs chondrocyte hypertrophy, we performed high-throughput Chip-seq to identify target genes involved in Smad4-regulated chondrocyte hypertrophy. Our results suggest that Smad4 controls chondrocyte hypertrophy through regulating Runx2 expression during skeletal development.
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Project description:Smad4 is a central mediator of canonical TGF/BMP signaling and plays important roles in mesenchymal cell aggregation, chondrocyte differentiation, osteoblast differentiation and maturation. However, the regulatory mechanism of Smad4 underlying chondrocyte hypertrophy during skeletal development is unknown. To elucidate the molecular mechanism by which Smad4 deficiency impairs chondrocyte hypertrophy, we performed high-throughput RNA-seq to identify target genes involved in Smad4-regulated chondrocyte hypertrophy. Our results suggest that Smad4 controls chondrocyte hypertrophy through regulating Runx2 expression during skeletal development.
2018-05-07 | GSE114079 | GEO
Project description:Runx2 and Axin2 regulate skeletal development. We recently determined that Axin2 and Runx2 molecularly interact in differentiating osteoblasts to regulate intramembranous bone formation, but the relationship between these factors in endochondral bone formation was unresolved. To address this, we examined the effects of Axin2 deficiency on the cleidocranial dysplasia (CCD) phenotype of Runx2+/- mice, focusing on skeletal defects attributed to improper endochondral bone formation. Axin2 deficiency unexpectedly exacerbated calvarial components of the CCD phenotype in the Runx2+/- mice; the endocranial layer of the frontal suture, which develops by endochondral bone formation, failed to mineralize in the Axin2-/-:Runx2+/-mice, resulting in a cartilaginous, fibrotic and larger fontanel than observed in Runx2+/- mice. Transcripts associated with cartilage development (e.g., Acan, miR140) were expressed at higher levels, whereas blood vessel morphogenesis transcripts (e.g., Slit2) were suppressed in Axin2-/-:Runx2+/-calvaria. Cartilage maturation was impaired, as primary chondrocytes from double mutant mice demonstrated delayed differentiation and produced less calcified matrix in vitro. The genetic dominance of Runx2 was also reflected during endochondral fracture repair, as both Runx2+/- and double mutant Axin2-/-:Runx2+/- mice had enlarged fracture calluses at early stages of healing. However, by the end stages of fracture healing, double mutant animals diverged from the Runx2+/- mice, showing smaller calluses and increased torsional strength indicative of more rapid end stage bone formation as seen in the Axin2-/- mice. Taken together, our data demonstrate a dominant role for Runx2 in chondrocyte maturation, but implicate Axin2 as an important modulator of the terminal stages of endochondral bone formation. 4 mice per genotype X 4 genotypes: wildtype (WT), Runx2+/- (R-Het), Axin2-/- (A-KO), Axin2-/-:Runx2+/- (A-KO:R-Het). Total = 16 samples
2014-07-04 | E-GEOD-59079 | biostudies-arrayexpress
Project description:Runx2 and Axin2 regulate skeletal development. We recently determined that Axin2 and Runx2 molecularly interact in differentiating osteoblasts to regulate intramembranous bone formation, but the relationship between these factors in endochondral bone formation was unresolved. To address this, we examined the effects of Axin2 deficiency on the cleidocranial dysplasia (CCD) phenotype of Runx2+/-M-BM- mice, focusing on skeletal defects attributed to improper endochondral bone formation. Axin2 deficiency unexpectedly exacerbated calvarial components of the CCD phenotype in the Runx2+/-M-BM- mice; the endocranial layer of the frontal suture, which develops by endochondral bone formation, failed to mineralize in the Axin2-/-:Runx2+/-mice, resulting in a cartilaginous, fibrotic and larger fontanel than observed in Runx2+/-M-BM- mice. Transcripts associated with cartilage development (e.g., Acan, miR140) were expressed at higher levels, whereas blood vessel morphogenesis transcripts (e.g., Slit2) were suppressed in Axin2-/-:Runx2+/-calvaria. Cartilage maturation was impaired, as primary chondrocytes from double mutant mice demonstrated delayed differentiation and produced less calcified matrix in vitro. The genetic dominance of Runx2 was also reflected during endochondral fracture repair, as both Runx2+/-M-BM- and double mutant Axin2-/-:Runx2+/-M-BM- mice had enlarged fracture calluses at early stages of healing. However, by the end stages of fracture healing, double mutant animals diverged from the Runx2+/-M-BM- mice, showing smaller calluses and increased torsional strength indicative of more rapid end stage bone formation as seen in the Axin2-/-M-BM- mice. Taken together, our data demonstrate a dominant role for Runx2 in chondrocyte maturation, but implicate Axin2 as an important modulator of the terminal stages of endochondral bone formation. 4 mice per genotype X 4 genotypes: wildtype (WT), Runx2+/- (R-Het), Axin2-/- (A-KO), Axin2-/-:Runx2+/- (A-KO:R-Het). Total = 16 samples
2014-07-04 | E-GEOD-59081 | biostudies-arrayexpress
Project description:Runx2 and Axin2 regulate skeletal development. We recently determined that Axin2 and Runx2 molecularly interact in differentiating osteoblasts to regulate intramembranous bone formation, but the relationship between these factors in endochondral bone formation was unresolved. To address this, we examined the effects of Axin2 deficiency on the cleidocranial dysplasia (CCD) phenotype of Runx2+/- mice, focusing on skeletal defects attributed to improper endochondral bone formation. Axin2 deficiency unexpectedly exacerbated calvarial components of the CCD phenotype in the Runx2+/- mice; the endocranial layer of the frontal suture, which develops by endochondral bone formation, failed to mineralize in the Axin2-/-:Runx2+/-mice, resulting in a cartilaginous, fibrotic and larger fontanel than observed in Runx2+/- mice. Transcripts associated with cartilage development (e.g., Acan, miR140) were expressed at higher levels, whereas blood vessel morphogenesis transcripts (e.g., Slit2) were suppressed in Axin2-/-:Runx2+/-calvaria. Cartilage maturation was impaired, as primary chondrocytes from double mutant mice demonstrated delayed differentiation and produced less calcified matrix in vitro. The genetic dominance of Runx2 was also reflected during endochondral fracture repair, as both Runx2+/- and double mutant Axin2-/-:Runx2+/- mice had enlarged fracture calluses at early stages of healing. However, by the end stages of fracture healing, double mutant animals diverged from the Runx2+/- mice, showing smaller calluses and increased torsional strength indicative of more rapid end stage bone formation as seen in the Axin2-/- mice. Taken together, our data demonstrate a dominant role for Runx2 in chondrocyte maturation, but implicate Axin2 as an important modulator of the terminal stages of endochondral bone formation.
2014-07-04 | GSE59081 | GEO