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Expression data from adult lungs isolated from TMEM100-deficient mice

ABSTRACT: Tmem100 was identified as a downstream gene of BMP9-ALK1 signaling. The signaling has been implicated in hereditary hemorrhagic telangiectasia. This study was designed to identify affected genes in TMEM100-deficiect mice. Tmem100 was inactivated in adult Tmem1002loxP/2loxP;ROSA26+/CreER mice by tamoxifen tereatment. Microarray data was obtained from the lungs isolated from tamoxifen treated control and mutant mice.

ORGANISM(S): Mus musculus

PROVIDER: GSE57256 | GEO | 2014/05/03

SECONDARY ACCESSION(S): PRJNA246087

REPOSITORIES: GEO

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Expression data from adult lungs isolated from TMEM100-deficient mice

Project description:Tmem100 was identified as a downstream gene of BMP9-ALK1 signaling. The signaling has been implicated in hereditary hemorrhagic telangiectasia. This study was designed to identify affected genes in TMEM100-deficiect mice. Tmem100 was inactivated in adult Tmem1002loxP/2loxP;ROSA26+/CreER mice by tamoxifen tereatment. Microarray data was obtained from the lungs isolated from tamoxifen treated control and mutant mice. Three control mice (Tmem1002loxP/2loxP) and three mutant mice (Tmem1002loxP/2loxP;ROSA26+/CreER) were treated with tamoxifen (two consecutive intraperitoneal injections, 0.1 mg/g of body weight) to activate CreER recombinase. Total RNAs were isolated from lungs 7 days after tamoxifen injection.

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Expression data from BMP9-treated human dermal microvascular endothelial cells (HMVEC-D)

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Deciphering early phosphoproteome changes in response to BMP9 and BMP10 in endothelial cells

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Induced Endothelial Cell Cycle Arrest Prevents Arterio-venous Malformations in Hereditary Hemorrhagic Telangiectasia (Bulk RNA-Seq)

Project description:Distinct endothelial cell cycle states (early G1 vs. late G1) provide different “windows of opportunity” to enable the differential expression of genes that regulate venous and arterial specification, respectively. Endothelial cell cycle control and arterial-venous identities are disrupted in vascular malformations including arteriovenous (AV) shunts which is a hallmark of hereditary hemorrhagic telangiectasia (HHT). We show how endothelial cell late G1 arrest induced by Palbociclib modulates the expression of genes regulating arterio-venous identity and prevents AVM development induced by BMP9/10 inhibition.

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Project description:The overall objective of the project is to evaluate the effects of loss of function of iron regulatory proteins (IRP1, encoded by Aco1)-1 and -2 (IRP2, encoded by Ireb2) during adult life. Mice carrying floxed Aco1 and Ireb2 alleles were crossed to a knockin strain expressing a tamoxifen-inducible CRE recombinase under the control of the Rosa26 promoter. The resulting Aco1flox/flox,Ireb2flox/flox,Rosa26+/CreERT2 mice are designated P1/2-KO; littermates lacking the CreER sequence (Aco1flox/flox,Ireb2flox/flox,Rosa26+/+) serve as reference and are designated P1/2-CTR. Adult mice were injected (i.p.) with tamoxifen on day 1 and day 3 to ablate the IRPs in the whole body, and were sacrificed on day 10 for analysis. Bone marrow cells were collected and LY6G+ cells were magnetically sorted for proteome analysis by LC-MS/MS using an Ultimate 3000 UPLC system connected to an Orbitrap Exploris 480 mass spectrometer.

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2012-08-01 | E-GEOD-28670 | biostudies-arrayexpress

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Project description:Vascular networks form, remodel and mature under the influence of both fluid shear stress (FSS) and soluble factors. Physiological FSS promotes and maintains vascular stability via synergy with Bone Morphogenic Protein 9 (BMP9) and BMP10. Conversely, mutation of the BMP receptors ALK1, Endoglin or the downstream effector SMAD4 leads to Hereditary Hemorrhagic Telangiectasia (HHT), characterized by fragile and leaky arterial-venous malformations (AVMs). But how endothelial cells (EC) integrate FSS and BMP signals in vascular development and homeostasis, and how mutations give rise to vascular malformations is not well understood. Here, we aimed to elucidate the mechanism of synergy between fluid shear stress and SMAD signaling in vascular stability and its failure in HHT. We have now found that loss of Smad4 increases ECs’ sensitivity to flow by lowering the FSS set point with resulting AVMs exhibiting features of excessive flow-mediated morphological responses. Mechanistically, loss of Smad4 disinhibits flow-mediated Klf4-Tie2-PI3K/Akt signaling leading to increased EC proliferation and loss of arterial identity due to Klf4-mediated repression of cyclin dependent Kinase (CDK) inhibitors, CDKN2A and CDKN2B. Thus, AVMs caused by Smad4 deletion are characterized by chronic high flow remodeling with excessive EC proliferation and loss of arterial identity as triggering events.

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Project description:A novel mutation gene of Hereditary Hemorrhagic Telangiectasia

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