The clinical significance of regulatory variants at the GDF5 locus in joint disease
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ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE153260 | GEO | 2021/06/10
REPOSITORIES: GEO
Similar Datasets
Project description:The clinical significance of regulatory variants at the GDF5 locus in joint disease
| PRJNA641883 | ENA
Project description:Objective: Joint formation begins with the establishment of an interzone within the cartilaginous anlagen of the future skeleton and both Gdf5 and Erg are proposed as regulators of chondrocyte differentiation during and post interzone formation. The aim of this study was to examine the relationship between Gdf5 and Erg expression and downstream effects on chondrocyte gene expression. Design: Erg expression was identified in mouse knee joints at E13.5. Expression and microarray analyses were performed using micromass cultures of murine C3H10T1/2 mesenchymal cells undergoing induced chondrogenesis in the presence of absence of Gdf5 and Erg. Results: At E13.5, Erg expression was found to surround epiphyseal chondrocytes and span the interzone up to the intermediate zone. Erg splice forms were expressed in micromass cultures, and their expression profile was altered by the addition of recombinant Gdf5 depending on the stage of differentiation. Overexpression of Erg-010 resulted in a downregulation of Col2a1 and Col10a1. Microarray analysis following Erg-010 overexpression identified two potential downstream targets, Ube2b and Osr2, which were also differentially regulated by Gdf5. Conclusion: Erg regulation by Gdf5 in mesenchymal cells in vitro is dependent on the stage of chondrogenesis, and its expression in vivo demarcates chondrocytes that are not destined to be consumed by endochondral ossification. Functionally, Erg expression causes downregulation of Col2a1 and Col10a1 expression and this effect is potentially mediated by Osr2, which is a known regulator of chondrocyte differentiation. The identification of Ube2b as a putative downstream target of Erg-010 suggests that it may contribute to the regulation of the ubiquitination pathway and thereby BMP2 signaling, which is essential for normal knee joint development. RNA from overexpression experiments was extracted as described above. Total RNA quality was confirmed using a Bioanalyzer 2100 (Agilent). Labelled targets were generated from total RNA and hybridized to GeneChip Mouse Genome 430 2.0 arrays (Affymatrix) (Genomics Centre, University of Manchester). The raw fluorescence intensity values were normalized using a Robust Multi-array Average approach using dChip (V2005)
2015-01-20 | E-GEOD-65077 | biostudies-arrayexpress
Project description:The role of bioenergetics in synovial joint development is unknown. With single-cell RNA sequencing (scRNA-seq) in the knee joint primordia, we discover that the Gdf5-expressing interzone cells are enriched for the expression of glycolysis genes.
2024-12-31 | GSE252486 | GEO
Project description:Our prior work indicated that the transcription factor Creb5 plays a crucial role in the genesis of synovial joints. Here, we perform an integrative analysis of the transcriptome, chromatin accessibility, and Creb5-chromatin occupancy in Creb5-expressing synovial joint progenitor cells. This analysis revealed that Creb5 directly binds to both its own two promoters and to the regulatory regions of the early joint markers, Gdf5 and Sfrp2; each of whose expression in the joint-interzone is Creb5-dependent. Functional enhancer analysis indicated that Creb5 binding sites in its own two promoters are necessary for these sequences to drive transgene expression in a pattern that mimics endogenous Creb5 expression. While Creb5 directly regulates both Gdf5 and Sfrp2 expression in the inner joint-interzone by binding to either CREs or TREs in their regulatory elements, Creb5 activates Barx1 expression specifically in the outer joint-interzone; and thus initiates both the formation of the joint-interzone and regionalization of cell fates within this tissue.
2025-06-05 | GSE281191 | GEO
Project description:Our prior work indicated that the transcription factor Creb5 plays a crucial role in the genesis of synovial joints. Here, we perform an integrative analysis of the transcriptome, chromatin accessibility, and Creb5-chromatin occupancy in Creb5-expressing synovial joint progenitor cells. This analysis revealed that Creb5 directly binds to both its own two promoters and to the regulatory regions of the early joint markers, Gdf5 and Sfrp2; each of whose expression in the joint-interzone is Creb5-dependent. Functional enhancer analysis indicated that Creb5 binding sites in its own two promoters are necessary for these sequences to drive transgene expression in a pattern that mimics endogenous Creb5 expression. While Creb5 directly regulates both Gdf5 and Sfrp2 expression in the inner joint-interzone by binding to either CREs or TREs in their regulatory elements, Creb5 activates Barx1 expression specifically in the outer joint-interzone; and thus initiates both the formation of the joint-interzone and regionalization of cell fates within this tissue.
2025-06-05 | GSE281190 | GEO
Project description:Our prior work indicated that the transcription factor Creb5 plays a crucial role in the genesis of synovial joints. Here, we perform an integrative analysis of the transcriptome, chromatin accessibility, and Creb5-chromatin occupancy in Creb5-expressing synovial joint progenitor cells. This analysis revealed that Creb5 directly binds to both its own two promoters and to the regulatory regions of the early joint markers, Gdf5 and Sfrp2; each of whose expression in the joint-interzone is Creb5-dependent. Functional enhancer analysis indicated that Creb5 binding sites in its own two promoters are necessary for these sequences to drive transgene expression in a pattern that mimics endogenous Creb5 expression. While Creb5 directly regulates both Gdf5 and Sfrp2 expression in the inner joint-interzone by binding to either CREs or TREs in their regulatory elements, Creb5 activates Barx1 expression specifically in the outer joint-interzone; and thus initiates both the formation of the joint-interzone and regionalization of cell fates within this tissue.
2025-06-05 | GSE281189 | GEO
Project description:Our prior work indicated that the transcription factor Creb5 plays a crucial role in the genesis of synovial joints. Here, we perform an integrative analysis of the transcriptome, chromatin accessibility, and Creb5-chromatin occupancy in Creb5-expressing synovial joint progenitor cells. This analysis revealed that Creb5 directly binds to both its own two promoters and to the regulatory regions of the early joint markers, Gdf5 and Sfrp2; each of whose expression in the joint-interzone is Creb5-dependent. Functional enhancer analysis indicated that Creb5 binding sites in its own two promoters are necessary for these sequences to drive transgene expression in a pattern that mimics endogenous Creb5 expression. While Creb5 directly regulates both Gdf5 and Sfrp2 expression in the inner joint-interzone by binding to either CREs or TREs in their regulatory elements, Creb5 activates Barx1 expression specifically in the outer joint-interzone; and thus initiates both the formation of the joint-interzone and regionalization of cell fates within this tissue.
2025-06-05 | GSE281188 | GEO
Project description:Our prior work indicated that the transcription factor Creb5 plays a crucial role in the genesis of synovial joints. Here, we perform an integrative analysis of the transcriptome, chromatin accessibility, and Creb5-chromatin occupancy in Creb5-expressing synovial joint progenitor cells. This analysis revealed that Creb5 directly binds to both its own two promoters and to the regulatory regions of the early joint markers, Gdf5 and Sfrp2; each of whose expression in the joint-interzone is Creb5-dependent. Functional enhancer analysis indicated that Creb5 binding sites in its own two promoters are necessary for these sequences to drive transgene expression in a pattern that mimics endogenous Creb5 expression. While Creb5 directly regulates both Gdf5 and Sfrp2 expression in the inner joint-interzone by binding to either CREs or TREs in their regulatory elements, Creb5 activates Barx1 expression specifically in the outer joint-interzone; and thus initiates both the formation of the joint-interzone and regionalization of cell fates within this tissue.
2025-06-05 | GSE281187 | GEO
Project description:Objective: Joint formation begins with the establishment of an interzone within the cartilaginous anlagen of the future skeleton and both Gdf5 and Erg are proposed as regulators of chondrocyte differentiation during and post interzone formation. The aim of this study was to examine the relationship between Gdf5 and Erg expression and downstream effects on chondrocyte gene expression. Design: Erg expression was identified in mouse knee joints at E13.5. Expression and microarray analyses were performed using micromass cultures of murine C3H10T1/2 mesenchymal cells undergoing induced chondrogenesis in the presence of absence of Gdf5 and Erg. Results: At E13.5, Erg expression was found to surround epiphyseal chondrocytes and span the interzone up to the intermediate zone. Erg splice forms were expressed in micromass cultures, and their expression profile was altered by the addition of recombinant Gdf5 depending on the stage of differentiation. Overexpression of Erg-010 resulted in a downregulation of Col2a1 and Col10a1. Microarray analysis following Erg-010 overexpression identified two potential downstream targets, Ube2b and Osr2, which were also differentially regulated by Gdf5. Conclusion: Erg regulation by Gdf5 in mesenchymal cells in vitro is dependent on the stage of chondrogenesis, and its expression in vivo demarcates chondrocytes that are not destined to be consumed by endochondral ossification. Functionally, Erg expression causes downregulation of Col2a1 and Col10a1 expression and this effect is potentially mediated by Osr2, which is a known regulator of chondrocyte differentiation. The identification of Ube2b as a putative downstream target of Erg-010 suggests that it may contribute to the regulation of the ubiquitination pathway and thereby BMP2 signaling, which is essential for normal knee joint development.
2015-01-20 | GSE65077 | GEO
Project description:Synovial joint development begins with the formation of the interzone, a region of condensed mesenchymal cells at the site of the prospective joint. Recently, lineage tracing strategies have revealed that Gdf5-lineage cells native to and from outside the interzone contribute to most, if not all, of the major joint components. However, there is limited knowledge of the specific transcriptional and signaling programs that regulate interzone formation and fate diversification of synovial joint constituents. To address this, we have performed single cell RNA-Seq analysis of 7,329 synovial joint progenitor cells from the developing murine knee joint from E12.5 to E15.5. By using a combination of computational analytics, in situ hybridization, and in vitro characterization of prospectively isolated populations, we have identified the transcriptional profiles of the major developmental paths for joint progenitors. Our freely available single cell transcriptional atlas will serve as a resource for the community to uncover transcriptional programs and cell interactions that regulate synovial joint development.
2020-06-23 | GSE151985 | GEO