Immunoprecipitation of YAP - Protein O-GlcNAcylation coupled to Hippo signaling drives vascular dysfunction in diabetic retinopathy
Ontology highlight
ABSTRACT:
INSTRUMENT(S): Q Exactive HF
ORGANISM(S): Homo Sapiens (human)
TISSUE(S): Retinal Blood Vessel Endothelial Cell, Cell Culture, Embryonic Stem Cell
SUBMITTER: 
Yi Lei
LAB HEAD: Yi Lei
PROVIDER: PXD056603 | Pride | 2024-10-27
REPOSITORIES: Pride
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| ED202GP_Og.PNG | Other | |||
| ED202GP_Rae_1209.pdResult | Other | |||
| ED202GP_Rae_1209.raw | Raw | |||
| checksum.txt | Txt |
Items per page: 5 1 - 4 of 4 |
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Project description:YAP was immunoprecipitated to detect O-GlcNAcylation status.
2018-10-26 | PXD005992 | Pride
Project description:Background—YAP, the nuclear effector of Hippo signaling, regulates cellular growth and survival in multiple organs, including the heart, by interacting with TEAD sequence specific DNA-binding proteins. Recent studies showed that YAP stimulates cardiomyocyte proliferation and survival. However, the direct transcriptional targets through which YAP exerts its effects are poorly defined. Methods and Results—To identify genes directly regulated by YAP in cardiomyocytes, we combined differential gene expression analysis in YAP gain- and loss-of-function with genome-wide identification of YAP bound loci using chromatin immunoprecipitation and high throughput sequencing. This screen identified Pik3cb, encoding p110β, a catalytic subunit of phosphoinositol-3-kinase (PI3K), as a candidate YAP effector that promotes cardiomyocyte proliferation and survival. We validated YAP and TEAD occupancy of a conserved enhancer within the first intron of Pik3cb, and show that this enhancer drives YAP-dependent reporter gene expression. Yap gain- and loss-of-function studies indicated that YAP is necessary and sufficient to activate the PI3K-Akt pathway. Like Yap, Pik3cb gain-of-function stimulated cardiomyocyte proliferation, and Pik3cb knockdown dampened the YAP mitogenic activity. Reciprocally, Yap loss-of-function impaired heart function and reduced cardiomyocyte proliferation and survival, all of which were significantly rescued by AAV-mediated Pik3cb expression. Conclusion—Pik3cb is a crucial direct target of YAP, through which the YAP activates PI3K-AKT pathway and regulates cardiomyocyte proliferation and survival. Two groups were involved in this study:TNTcreYapfl_het group and TNTcreYapfl_KO group. Each group contained three biological replicates. Embryo hearts were collected at E12.5 and dissociated. Cardiomyocytes were collected by FACS. The total RNA of cardiomyocytes were isolated for microarray analysis.
2015-02-20 | E-GEOD-57718 | biostudies-arrayexpress
Project description:We aimed to identify microRNAs that are regulated by YAP in human mammary epithelial cells. We utilized deep sequencing technology to identify microRNAs that are induced by YAP overexpression and repressed by YAP knockdown.
2012-10-01 | E-GEOD-41124 | biostudies-arrayexpress
Project description:Liver undergoes both size increase and differentiation during postnatal period, which in mice is approximately first 30 days. The mechanisms of simultaneous postnatal liver cell proliferation and maturation are not clear. In these experiments, role of yes associated protein (Yap), the downstream effector of Hippo Kinase signaling pathway was investigated. Total RNA isolated from livers of Yap+/+ and Yap+/- mice at Postnatal day 30. Pooled livers from 5 mice per genotype were used.
2012-04-04 | E-GEOD-31281 | biostudies-arrayexpress
Project description:Metabolic disorder is emerging as a crucial contributor to the pathogenesis of diabetic vascular complications including diabetic retinopathy (DR), the leading cause of blindness in the working-age population. Yet, the underlying molecular mechanisms of how the disturbed metabolic homeostasis contribute to vascular dysfunction in DR remain elusive. O-GlcNAcylation modification act as a nutrient sensor particularly sensitive to ambient glucose. Here, we observed pronounced O-GlcNAc elevation in retina endothelial cells (ECs) of DR patients and mouse models. Endothelial-specific depletion or pharmacological inhibition of O-GlcNAc transferase efficiently mitigated vascular dysfunctions. Mechanistically, we found that YAP/TAZ, key effectors of the Hippo pathway, are O-GlcNAcylated in DR. We identified Thr383 as an O-GlcNAc site on YAP, which inhibits its phosphorylation at Ser397, leading to its stabilization and activation. Consequently, highly activated YAP/TAZ, promotes vascular dysfunction by inducing a pro-angiogenic and glucose metabolic transcriptional program. These findings emphasize the critical role of O-GlcNAc-Hippo axis in DR pathogenesis and suggest its unique potential as a therapeutic target.
2024-09-24 | GSE266072 | GEO
Project description:Metabolic disorder is emerging as a crucial contributor to the pathogenesis of diabetic vascular complications including diabetic retinopathy (DR), the leading cause of blindness in the working-age population. Yet, the underlying molecular mechanisms of how the disturbed metabolic homeostasis contribute to vascular dysfunction in DR remain elusive. O-GlcNAcylation modification act as a nutrient sensor particularly sensitive to ambient glucose. Here, we observed pronounced O-GlcNAc elevation in retina endothelial cells (ECs) of DR patients and mouse models. Endothelial-specific depletion or pharmacological inhibition of O-GlcNAc transferase efficiently mitigated vascular dysfunctions. Mechanistically, we found that YAP/TAZ, key effectors of the Hippo pathway, are O-GlcNAcylated in DR. We identified Thr383 as an O-GlcNAc site on YAP, which inhibits its phosphorylation at Ser397, leading to its stabilization and activation. Consequently, highly activated YAP/TAZ, promotes vascular dysfunction by inducing a pro-angiogenic and glucose metabolic transcriptional program. These findings emphasize the critical role of O-GlcNAc-Hippo axis in DR pathogenesis and suggest its unique potential as a therapeutic target.
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Project description:Hippo signaling is highly associated with activity in the stem cell compartment of many epithelial tissues. In this study, we examined if Hippo signaling inhibition (by inducing Yap expression) could convert differentiated cells into a progenitor like phenotype. Organoid cells derived from mouse livers under various conditions, wild-type, Yap ON (Plus Dox), and Yap ON then OFF (Minus Dox) was examined. Comparison between freshly isolated hepatocytes; Uninduced_YPF-#.cel against Organoids grown in wild-type conditions (WT), Yap On (in vivo) off (in vitro) - YapOrganoidDoxMinus , and Yap On continuously - YapOrganoidDoxPlus. Organoids grown in culture or YFP+ sorted liver cells after the indicated time of Yap expression were collected. These were amplified using Nugene technology and hybridized to Affymetrix MoGene1.0 st arrays.
2014-06-06 | E-GEOD-55558 | biostudies-arrayexpress
Project description:This study compares gene expression change upon expression of Yes-associated protein (YAP) wild-type or mutants in order to establish the importance of TEAD binding and WW domains in the gene-induction function of YAP. The results indicate that gene-induction is seriously comprised in YAP-S94A (TEAD binding domain mutant) expressing cells. And mutantion of WW domains (YAP-W1W2) also affect a fraction of YAP induced genes. Therefore both TEAD binding domain and WW domains are required for the full function of YAP in gene-induction. Experiment Overall Design: Four samples are included: 1. pQCXIH vector control; 2 YAP-WT expression; 3. YAP-S94A expression; 4. YAP-W1W2 expression. Gene expression profiles of YAP wild-type or mutants expressing cells were compared to that of vector control. Experiments were done in MCF10A mammary epithelial cells.
2010-01-19 | E-GEOD-13218 | biostudies-arrayexpress
Project description:Abstract Hippo pathway downstream effectors Yap and Taz play key roles in cell proliferation and regeneration, regulating gene expression especially via interaction with Tead transcription factors. To investigate their role in skeletal muscle stem cells, we analysed Taz in vivo and ex vivo in comparison to Yap. Taz was expressed in activated satellite cells. siRNA knockdown or constitutive expression of wildtype or constitutively active TAZ mutants showed that TAZ promoted proliferation, a function that was shared with YAP. However, at later stages of myogenesis, TAZ also enhanced myogenic differentiation of myoblasts, whereas YAP inhibits such differentiation. Functionally, while muscle growth was mildly affected in Taz (gene symbol Wwtr1-/-) knockout mice, there were no overt effect on regeneration. However, conditional knockout of Yap in satellite cells of Pax7Cre-ERT2/+ : Yapflox/flox : Rosa26Lacz mice produced a marked regeneration deficit. To identify potential mechanisms, microarray analysis showed many common Taz/Yap targets, but Taz also regulates some genes independently of Yap, including myogenic genes such as Pax7, Myf5 and Myod1. Proteomic analysis of Yap/Taz revealed many common binding partners, but Taz also interacts with proteins distinct from Yap, that are mainly involved in myogenesis and aspects of cytoskeleton organization. Neither TAZ nor YAP bind members of the Wnt destruction complex but both extensively changed expression of Wnt and Wnt-cross talking genes with known roles in myogenesis. Finally, TAZ operates through Tead4 to enhance myogenic differentiation. In summary, Taz and Yap have overlapping functions in promoting myoblast proliferation but Taz then switches to promote myogenic differentiation.
2017-06-13 | PXD005751 | Pride
Project description:The Hippo pathway downstream effectors, Yap and Taz, play key roles in cell proliferation and tissue growth, regulating gene expression especially via interaction with Tead transcription factors. To investigate their role in skeletal muscle stem cells, we analysed gene expression changes driven by Taz and compared these to Yap mediated changes to the transcriptome by measurement of gene expression on Affymetrix microarrays. To interrogate overlapping and unique transcriptional changes driven by these Hippo effectors, satellite cell-derived myoblasts were transduced with constitutively active TAZ S89A or YAP S127A retrovirus for 24h or 48h, with empty retrovirus as control. Triplicate microarray analyses of empty vector controls, hYAP1 S127A and TAZ S89A transgenic primary myoblasts were conducted.
2017-06-20 | E-MTAB-5395 | biostudies-arrayexpress