YAP and TAZ couple osteoblast precursor mobilization to angiogenesis and mechanoregulation in fetal bone development
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA947139 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Fetal bone development occurs by endochondral conversion of avascular cartilage to vascularized bone at the growth plate. This requires coordinated mobilization of osteoblast precursors with blood vessels. In adult bone, vessel-adjacent osteoblast precursors are maintained by mechanical stimuli; however, the mechanisms by which these cells mobilize and respond to mechanical cues during embryonic development are unknown. Here, we unify osteoblast precursor co-mobilization and mechanotransduction in a single signaling pathway, via the mechanosensitive transcriptional regulators YAP and TAZ. We show that YAP and TAZ spatially couple osteoblast precursor mobilization to angiogenesis, regulate vascular loop morphogenesis to control growth plate remodeling, and mediate mechanoregulation of load-induced osteogenesis in embryonic bone. Mechanistically, YAP and TAZ uniquely regulate a subset of osteoblast-lineage cells, identified by single-cell RNA sequencing as vessel-associated osteoblast precursors. Among these cells, YAP and TAZ regulate expression of the angiogenic chemokine, Cxcl12. Functionally, in 3D human cell co-culture, CXCL12 treatment rescued angiogenesis impaired by stromal cell YAP/TAZ depletion. Together, these data establish new functions of the vessel-associated osteoblast precursors in endochondral bone development.
2023-11-15 | GSE227818 | GEO
Project description:Endochondral ossification requires coordinated mobilization of osteoblast precursors with blood vessels. During adult bone homeostasis, vessel adjacent osteoblast precursors respond to and are maintained by mechanical stimuli; however, the mechanisms by which these cells mobilize and respond to mechanical cues during embryonic development are unknown. Previously, we found that deletion of the mechanoresponsive transcriptional regulators, YAP and TAZ, from Osterix-expressing osteoblast precursors and their progeny caused perinatal lethality. Here, we show that embryonic YAP/TAZ signaling couples vessel-associated osteoblast precursor mobilization to angiogenesis in developing long bones. Osterix-conditional YAP/TAZ deletion impaired endochondral ossification in the primary ossification center but not intramembranous osteogenesis in the bone collar. Single-cell RNA sequencing revealed YAP/TAZ regulation of the angiogenic chemokine, Cxcl12, which was expressed uniquely in vessel-associated osteoblast precursors. YAP/TAZ signaling spatially coupled osteoblast precursors to blood vessels and regulated vascular morphogenesis and vessel barrier function. Further, YAP/TAZ signaling regulated vascular loop morphogenesis at the chondro-osseous junction to control hypertrophic growth plate remodeling. In human cells, mesenchymal stromal cell co-culture promoted 3D vascular network formation, which was impaired by stromal cell YAP/TAZ depletion, but rescued by recombinant CXCL12 treatment. Lastly, YAP and TAZ mediated mechanotransduction for load-induced osteogenesis in embryonic bone.
| S-EPMC9882292 | biostudies-literature
Project description:Activation of endothelial YAP/TAZ signaling is crucial for physiological and pathological angiogenesis. The mechanisms of endothelial YAP/TAZ regulation are, however, incompletely understood. Here we report that the protocadherin FAT1 acts as a critical upstream regulator of endothelial YAP/TAZ which limits the activity of these transcriptional cofactors during developmental and tumor angiogenesis by promoting their degradation. We show that loss of endothelial FAT1 results in increased endothelial cell proliferation in vitro and in various angiogenesis models in vivo. This effect is due to perturbed YAP/TAZ protein degradation, leading to increased YAP/TAZ protein levels and expression of canonical YAP/TAZ target genes. We identified the E3 ubiquitin ligase Mind Bomb-2 (MIB2) as a novel FAT1-interacting protein mediating FAT1-induced YAP/TAZ ubiquitination and degradation. Loss of MIB2 expression in endothelial cells in vitro and in vivo recapitulated the effects of FAT1 depletion and caused decreased YAP/TAZ degradation and increased YAP/TAZ signaling. Our data identify a pivotal mechanism of YAP/TAZ regulation involving FAT1 and its associated E3 ligase MIB2, which is essential for YAP/TAZ-dependent angiogenesis.
Samples for proteomics were obtained from HUVECs transduced with the FAT1 intracellular part fused with the extracellular part and transmembrane domain of the IL-2 receptor and carrying a Flag tag on the C terminus (see above) for 36 h followed by lysis in IP buffer. Lysates were incubated with magnetic anti-FLAG beads (M8823, Sigma/Aldrich) overnight at 4Deg. Affinity purified samples were subjected to in-gel (4-12% NuPAGE Bis-Tris gels, ThermoFisher Scientific) digestion as described (DOI: 10.1038/nprot.2006.468). In brief, gel lanes were cut into nine blocks/fractions and finely diced. Embedded proteins were reduced (10 mM dithiothreitol) and alkylated (55 mM iodoacetamide), followed by overnight digestion using trypsin (Serva). Peptides were extracted by increasing concentrations of acetonitrile and lyophilized. Final desalting, concentration and storage utilized "stop and go extraction" (STAGE) tips (DOI: 10.1021/ac026117i). Eluted peptides where subjected to electrospray ionization (ESI)-mediated liquid chromatography/tandem mass spectrometry (LC/MS2) using in house-packed column emitters (15 cm length, 70 um ID, 1.9 um ReprsoSil-Pur 120 C18-AQ, Dr. Maisch) and a buffer system comprising solvent A (0.1% formic acid) and solvent B (80% acetonitrile, 0.1% formic acid). Instrumentation details and parameters were extracted and summarized using MARMoSET (DOI: 10.1074/mcp.TIR119.001505) and are repository deposited. Peptide/spectrum matching and label free quantitation were performed using the MaxQuant suite of algorithms (DOIs: 10.1038/nbt.1511, 10.1021/pr101065j, 10.1074/mcp.M113.031591) against the human UniProt database (canonical & isoforms; downloaded on 2019/01/23). Parameters are included here. Downstream statistical analysis used the limma-based (DOI: 10.1093/nar/gkv007) in-house package autonomics (https://doi.org/doi:10.18129/B9.bioc.autonomics).
2023-02-14 | MSV000091279 | MassIVE
Project description:The BMP/TGFβ-Smad, Notch and VEGF signaling guides formation of endothelial tip and stalk cells. However, the crosstalk of bone morphogenetic proteins (BMPs) and vascular endothelial growth factor receptor 2 (VEGFR2) signaling has remained largely unknown. We demonstrate that BMP family members regulate VEGFR2 and Notch signaling, and act via TAZ-Hippo signaling pathway. BMPs were found to be regulated after VEGF gene transfer in C57/Bl6 mice and in a porcine myocardial ischemia model. BMPs 2/4/6 were identified as endothelium-specific targets of VEGF. BMP2 modulated VEGF-mediated endothelial sprouting via Delta like Canonical Notch Ligand 4 (DLL4). BMP6 modulated VEGF signaling by regulating VEGFR2 expression and acted via Hippo signaling effector TAZ, known to regulate cell survival/proliferation, and to be dysregulated in cancer. In a matrigel plug assay in nude mice BMP6 was further demonstrated to induce angiogenesis. BMP6 is the first member of BMP family found to directly regulate both Hippo signaling and neovessel formation. It may thus serve as a target in pro/anti-angiogenic therapies.
2020-10-07 | GSE82106 | GEO
Project description:Angiogenesis, the process by which endothelial cells (ECs) form new blood vessels from existing ones, is intimately linked to the tissue's metabolic milieu and often occurs at nutrient-deficient sites. However, ECs rely on sufficient metabolic resources to support growth and proliferation. How endothelial nutrient acquisition and usage are regulated is unknown. Here we show that these processes are dictated by YAP/TAZ-TEAD – a transcriptional module whose function is highly responsive to changes in the tissue environment. ECs lacking YAP/TAZ or their transcriptional partners, TEAD1, 2, and 4 fail to divide, resulting in stunted vascular growth in mice. Conversely, activation of TAZ, the more abundant paralogue in ECs, boosts proliferation, leading to vascular hyperplasia. We find that YAP/TAZ promote angiogenesis by fueling nutrient mTORC1 signaling. By orchestrating the transcription of a repertoire of cell-surface transporters, YAP/TAZ-TEAD stimulate the import of amino acids and other essential nutrients, thereby enabling mTORC1 pathway activation. Dissociating mTORC1 from these nutrient inputs – elicited by the loss of Rag GTPases – inhibits mTORC1 activity and prevents YAP/TAZ-dependent vascular growth. These findings define a pivotal role for YAP/TAZ-TEAD in steering endothelial mTORC1 and illustrate the essentiality of coordinated nutrient fluxes in the vasculature.
2022-05-08 | PXD026872 | Pride
Project description:VEGF is a major driver of blood vessel formation. However, the signal transduction pathways culminating into the biological consequences of VEGF signaling are partially understood. Here we show that the Hippo pathway effectors YAP and TAZ, work as a regulatory hub in mediating VEGF-VEGFR2 signaling during angiogenesis. We demonstrate that YAP/TAZ are essential for vascular development as endothelium specific deletion of YAP/TAZ leads to impaired vascularization and embryonic lethality. Mechanistically, we show that VEGF activates YAP/TAZ via its effects on actin cytoskeleton remodeling, and that activated YAP/TAZ induce a transcriptional program that results in the expression of a set of genes to further control cytoskeleton dynamics, and thus ensure a proper angiogenic response. YAP/TAZ deletion also results in VEGFR2 trafficking defects from the Golgi to the plasma membrane. Together, our study establishes YAP/TAZ as a central regulatory hub that mediates VEGF signaling, and hence, regulates angiogenesis.
2019-03-12 | GSE94860 | GEO
Project description:VEGF is a major driver of blood vessel formation. However, the signal transduction pathways culminating into the biological consequences of VEGF signaling are partially understood. Here we show that the Hippo pathway effectors YAP and TAZ, work as a regulatory hub in mediating VEGF-VEGFR2 signaling during angiogenesis. We demonstrate that YAP/TAZ are essential for vascular development as endothelium specific deletion of YAP/TAZ leads to impaired vascularization and embryonic lethality. Mechanistically, we show that VEGF activates YAP/TAZ via its effects on actin cytoskeleton remodeling, and that activated YAP/TAZ induce a transcriptional program that results in the expression of a set of genes to further control cytoskeleton dynamics, and thus ensure a proper angiogenic response. YAP/TAZ deletion also results in VEGFR2 trafficking defects from the Golgi to the plasma membrane. Together, our study establishes YAP/TAZ as a central regulatory hub that mediates VEGF signaling, and hence, regulates angiogenesis.
2019-03-12 | GSE94856 | GEO
Project description:We demonstrated that TAZ positively regulates Irs1 gene transcription in muscle. Therefore we designed ChIP-seq experiment to reveal detailed mechanism of regulation. To capture TAZ in chromatin preparation, we made Flag-tagged TAZ expressing and control vector transduced C2C12 cells by retroviral infection. We used FLAG-conjugated beads to capture TAZ-chromatin complexes and ChIP-seq was perforemd. Among many TAZ binding sites, we focused Irs1 regulatory region because our primary purpose was to identify TAZ binding site for the regulation of Irs1 transcription.
2018-12-13 | E-MTAB-6764 | biostudies-arrayexpress
Project description:This SuperSeries is composed of the following subset Series: GSE39746: Argonaute proteins couple chromatin silencing to alternative splicing (exon array) GSE39748: Argonaute proteins couple chromatin silencing to alternative splicing (RNA IP-Seq) Refer to individual Series
2012-08-22 | E-GEOD-39749 | biostudies-arrayexpress
Project description:Obesity is a clinical condition characterised by a chronic, low-grade inflammatory state. Adipose-derived mesenchymal stem cells (ADSCs) have a multidirectional differentiation potential to adipocytes. However, the relationship between adipogenesis and inflammation is not yet fully understood.TAZ (WW domain containing transcription regulator 1) can act as a molecular rheostat to fine-tune the osteoblast and adipocyte differentiation balance. In this study, we investigated the role of TAZ in the adipogenesis of Arbas cashmere goat ADSCs (gADSCs). We observed elevated TAZ expression levels during the adipogenesis of gADSCs. Overexpression and knockdown of TAZ were performed in stably transfected gADSCs cell lines, and RNA-seq analysis revealed that TAZ was associated with adipogenesis. TAZ overexpression promoted adipose differentiation of gADSCs, while TAZ knockdown had the opposite effect. In addition, TAZ overexpression and knockdown altered the expression of YAP1 (Yes1 associated transcriptional regulator) and TAZ in the nucleus. TAZ regulated the mRNA expression level and secretion level of tumor necrosis factor (TNF)-α, promoting adipose differentiation of gADSCs. Notably, TNF-α counteracted the inhibitory effect of sh-TAZ on the adipose differentiation of gADSCs. Collectively, these findings suggest that TAZ regulates adipogenesis in gADSCs by modulating TNF-α, which is of particular significance in several metabolic disorders where the amount or function of adipose tissue is altered.
2024-10-17 | GSE279395 | GEO