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Differentiation Time Course Analysis of Gene Expression in Primary Osteoblasts from Wild Type and β-Arrestin 2 Knockout Mice

ABSTRACT: Differentiation Time Course Analysis of Gene Expression in Primary Osteoblasts from Wild Type and β-Arrestin 2 Knockout Mice

PROVIDER: PRJNA752103 | ENA |

REPOSITORIES: ENA

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Differentiation Time Course Analysis of Gene Expression in Primary Osteoblasts from Wild Type and β-Arrestin 2 Knockout Mice

Project description:Gene expression analysis was performed on differentiating obsteoblasts isolated from calvaria of C57BL/6J wildtype or B-arrestin 2 knockout mice.

2022-08-16 | GSE181459 | GEO

Lung transcriptomes of wild type, β-arrestin 1 -/-, and β-arrestin 2 -/- mice exposed to normoxia or chronic hypoxia

Project description:We found that β-arrestin 1 -/- mice were more sensitive to hypoxia-induced pulmonary arterial hypertension with increased right ventricle hypertrophy and higher right ventricle systolic pressure, while β-arrestin 2 -/- mice developed right ventricle hypertrophy comparable to wild type mice. Moreover, β-arrestin 1 -/- mice had worse right ventricle function than wild type mice in response to chronic hypoxia, whereas β-arrestin 2 -/- mice relatively preserved right ventricle function compared to wild type mice. To investigate the molecular mechanisms responsible for the worse PAH in β-arrestin 1 -/- mice, we performed lung transcriptome analysis of wild type, β-arrestin 1 -/-, and β-arrestin 2 -/- mice using high-throughput RNA-seq.

2018-11-19 | GSE110131 | GEO

β-arrestin 2 as an activator of cGAS-STING signaling and target of viral immune evasion

Project description:Virus infection may induce excessive interferon (IFN) responses that can lead to host tissue injury or even death. β-arrestin 2 regulates multiple cellular events through the G protein-coupled receptor (GPCR) signaling pathways. Here we demonstrate that β-arrestin 2 also promotes virus-induced production of IFN-β and clearance of viruses in macrophages. β-arrestin 2 interacts with cyclic GMP-AMP synthase (cGAS) and increases the binding of dsDNA to cGAS to enhance cyclic GMP-AMP (cGAMP) production and the downstreatm stimulator of interferon genes (STING) and innate immune responses. Mechanistically, deacetylation of β-arrestin 2 at Lys171 facilitates the activation of the cGAS–STING signaling and the production of IFN-β. In vitro, viral infection induces the degradation of β-arrestin 2 to facilitate immune evasion, while a β-blocker, carvedilol, rescues β-arrestin 2 expression to maintain the antiviral immune response. Our results thus identify a viral immune-evasion pathway via the degradation of β-arrestin 2, and also hint that carvedilol, approved for treating heart failure, can potentially be repurposed as an antiviral drug candidate.

2020-10-22 | GSE159735 | GEO

Impact of beta-arrestin-2 deficiency on intestinal tumorigenesis in Apc-mutated mice

Project description:This SuperSeries is composed of the following subset Series: GSE24575: Beta-arrestin-2 deficiency effect on intestinal tumorigenesis in Apc-mutated mice GSE24576: Gene expression analysis of tumors from ApcD14/+ mice Refer to individual Series

2012-01-20 | E-GEOD-24577 | biostudies-arrayexpress

Circadian time course

Project description:Circadian time course

| PRJNA98585 | ENA

mRNA expression in primary osteoblasts from wild-type and Fam102a knockout mice

Project description:We examined a global mRNA expression in primary osteoblasts from wild-type and Fam102a knockout mice.

2024-12-03 | GSE211533 | GEO

Molecular mechanism of β-arrestin-2 pre-activation by phosphatidylinositol 4,5-bisphosphate

Project description:Arrestins are a protein family that regulate G protein-coupled receptor (GPCR) signaling, with four distinct members in mammals (arrestin 1–4). Phosphorylated residues of G protein-coupled receptors bind to the N-domain of arrestin, resulting in C-terminus release. This induces further allosteric conformational changes, such as polar core disruption, alteration of interdomain loops, and domain rotation, which transform arrestins into the receptor-activated state. It is widely accepted that arrestin activation occurs by conformational changes propagated from the N- to the C-domain. However, recent studies have revealed that binding of phosphatidylinositol 4,5-bisphosphate (PIP2) to the C-domain transforms arrestins into an active state. In this study, we aimed to elucidate the mechanisms underlying PIP2-induced arrestin activation. We compared the conformational changes of β-arrestin-2 upon binding of PIP2 or phosphorylated C-tail peptide of vasopressin receptor type 2 (V2Rpp) using hydrogen/deuterium exchange mass spectrometry (HDX-MS). Introducing point mutations on the potential routes of the allosteric conformational changes and analyzing these mutant constructs with HDX-MS revealed that PIP2-binding at the C-domain affects the back loop, which destabilizes the gate loop and β-strand XX to transform β-arrestin-2 into the pre-active state.

2024-07-15 | PXD049391 | Pride

Lung transcriptomes of wild type, β-arrestin 1 -/-, and β-arrestin 2 -/- mice exposed to normoxia or chronic hypoxia

Project description:Lung transcriptomes of wild type, β-arrestin 1 -/-, and β-arrestin 2 -/- mice exposed to normoxia or chronic hypoxia

| PRJNA432928 | ENA

beta-arrestin-2 deficiency effect on intestinal tumorigenesis in Apc-mutated mice

Project description:Amoung their pleiotropic functions, a role was recently assigned for b-arrestin scaffold proteins in tumor growth, angiogenesis and invasion. In order to elucidate the roles of b-arrestins in tumour developement in intestinal epithelium initiated by Apc mutation, we determined the effects of b-arrestin gene deletion on intestinal polypolis using ApcD14/+ mice, a relevant mouse model of human intestinal tumorigenesis.Here we show that unlike b-arrestin1, absence of b-arrestin2 dramatically decreased the number of spontaneously developping intestinal tumors in ApcD14/+ mice.The size of residual tumors was similarto that of controls, suggesting that their growth is b-arrestin2-independent. This result demonstrated a role for b-arrestin2 in the early development of a tumor subset. Gene expression profils analysis of ApcD14/+:Arrb2+/+ and ApcD14/+:Arrb2-/- tumors showed two distinct clusters among ApcD14/+:Arrb2+/+ tumors and one of them was statistically more correlated to ApcD14/+:Arrb2-/- tumors than to the other ApcD14/+:Arrb2+/+ cluster, eventhough a number of genes saw their expression affected in ApcD14/+:Arrb2-/- tumors only. Altogether, our data unravel an unexpected early diversity among intestinal tumors and a crucial role for b-arrestin2 in early tumor development in Apc-mutated mice. 16 tumors from ApcD14/+:Arrb2+/+ mice and 13 tumors from ApcD14/+:Arrb2-/- mice

2012-01-20 | E-GEOD-24575 | biostudies-arrayexpress

Delineation of a conserved arrestin-biased signaling repertoire in vivo

Project description:Biased G protein-coupled receptor agonists engender a restricted repertoire of downstream events from their cognate receptors, permitting them to produce mixed agonist-antagonist effects in vivo. While this opens the possibility of novel therapeutics, it complicates rational drug design, since the in vivo response to a biased agonist cannot be reliably predicted from its in vitro efficacy. We have employed novel informatic approaches to characterize the in vivo transcriptomic signature of the arrestin pathway-selective parathyroid hormone analog [D-Trp12, Tyr34]-bPTH(7-34) in six different murine tissues after chronic drug exposure. We find that [D-Trp12, Tyr34]-bPTH(7-34) elicits a distinctive arrestin-signaling focused transcriptomic response that is more coherently regulated across tissues than that of the pluripotent agonist, hPTH(1-34). This arrestin-focused network is closely associated with transcriptional control of cell growth and development. Our demonstration of a conserved arrestin-dependent transcriptomic signature suggests a framework within which the in vivo outcomes of arrestin-biased signaling may be generalized.

2015-03-05 | GSE64485 | GEO

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