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Alpha7 Nicotinic Acetylcholine Receptor Mediates Chronic Nicotine Inhalation-Induced Cardiopulmonary Dysfunction

ABSTRACT: Alpha7 Nicotinic Acetylcholine Receptor Mediates Chronic Nicotine Inhalation-Induced Cardiopulmonary Dysfunction

PROVIDER: PRJNA803731 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR17893167_1.fastq.gz	Fastqsanger.gz
	SRR17893167_2.fastq.gz	Fastqsanger.gz
	SRR17893168_1.fastq.gz	Fastqsanger.gz
	SRR17893168_2.fastq.gz	Fastqsanger.gz
	SRR17893169_1.fastq.gz	Fastqsanger.gz

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Alpha7 Nicotinic Acetylcholine Receptor Mediates Chronic Nicotine Inhalation-Induced Cardiopulmonary Dysfunction

Project description:Purpose: The goal of this study is to compare the effects of inhaled nicotine on aortic gene expression and the role of the alpha7 nicotinic acetylcholine receptor (alpha7-nAChR) in mediating the nicotine effects. Methods: WT and alpha7-nAChR knockout (KO) mice at 5-month of age were exposed to nicotine vapor or room air for a total of 12 weeks. Total RNA was extracted from thoracic aortas using RNeasy Plus mini kit followed by library preparation using SMART-Seq v4 Ultra Low Input RNA Kit. Illumina next generation sequencing was performed using the NextSeq 500 system with the high output flow cell (up to 800 M paired end reads). Results: A total of 179 differentially expressed genes (149 upregulated and 30 downregulated, adjusted P-value < 0.1) were found in thoracic aortas from WT mice exposed to nicotine vapor compared to those exposed to room air. In contrast, only 7 non-overlapping genes were found to be differentially expressed in alpha7-nAChR KO mice exposed to nicotine compared to the air controls. Conclusions: Our study suggests that nicotine-induced changes in vascular gene expression is largely mediated by the alpha7-nAChR.

2022-02-08 | GSE196184 | GEO

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Short-term depletion of nicotinic acetylcholine receptor subunits in Drosophila enterocytes

Project description:Bulk RNAseq from whole Drosophila melanogaster guts expressing either mCherry-RNAi (control) or RNAi against nicotinic acetylcholine receptor subunits β1 and β3 (nAchRβ1 and nAchRβ3) under control of a enterocyte-specific driver to assess their role in barrier function.

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RNA sequencing data describing transcriptional changes in aorta of ApoE-/- mice after alpha 7 nicotinic acetylcholine receptor (α7nAChR) stimulation.

Project description:This manuscript is a companion paper to Ulleryd M.U. et al (1). Data shown here include RNA sequencing data from whole aorta of ApoE-/- mice treated with the alpha 7 nicotinic acetylcholine receptor (α7nAChR) agonist AZ6983 for 8 weeks using subcutaneously implanted osmotic minipumps. 1. Ulleryd MA, Mjornstedt F, Panagaki D, Yang LJ, Engevall K, Gutierrez S, et al. Stimulation of alpha 7 nicotinic acetylcholine receptor (α7nAChR) inhibits atherosclerosis via immunomodulatory effects on myeloid cells Re-submitted. 2019.

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α7 nicotinic acetylcholine receptor signaling modulates the inflammatory phenotype of fetal brain microglia: first evidence of interference by iron homeostasis.

Project description:We sequenced mRNA from 7 microglia extracted from sheep fetuses exposed to LPS, agonist and antagonist of α7 nicotinic acetylcholine receptor to determine signaling pathway through modeling of α7 during inflammation.

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Short-term depletion of nicotinic acetylcholine receptor subunits in Drosophila enterocytes

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Project description:Bulk RNA expression profiles were captured from hearts of alpha7 nicotinic acetylcholine receptor (Chrna7) knockout (KO) and wild type (WT) mice that underwent myocardial infarction (MI) or sham (SH) surgery at postnatal day 1 and full ventricle collection at 7 days post-surgery

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Project description:Description Drosophila melanogaster nicotinic acetylcholine receptors (nAChRs) are ligand-gated ion channels that present a target for insecticides. However, a better understanding of in vioreceptor subunit composition is needed for effective design of insecticides. Alpha-neurotxins are known as peptide toxins capable to block nAChRs by binding to its target subunits. To facilitate the analysis of nAChRs we used a CRISPR/Cas9 strategy to generate null alleles for all ten nAChR subunit genes. We studied interactions of nAChRs to a snake toxin by using styrene maleic acid lipid particles (SMALPs) extraction method. For the null alleles which are impaired in locomotor activities we examined the binding of nAChRs incorporated into SMALPs to alpha bungarotoxin by employing mass spectrometry. We show native ligand interactions to Dalpha5, Dalpha6 and Dalpha7 subunits and reveal glycosylation sites of Dalpha5 and Dalpha7 by a glycoproteomic approach. Finally, we report the localization of fluorescent tagged Dalpha6 across nervous system development

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α7 Nicotinic Acetylcholine Receptor Regulates Macrophage-Mediated Neuroinflammation in Dry Eye Disease

Project description:α7 Nicotinic Acetylcholine Receptor Regulates Macrophage-Mediated Neuroinflammation in Dry Eye Disease

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α7 Nicotinic Acetylcholine Receptor Regulates Macrophage-Mediated Neuroinflammation in Dry Eye Disease

Project description:Patients with dry eye disease (DED) often exhibit neurological abnormalities and may even suffer from neuropathic pain and pain-related anxiety or depression. However, addressing nerve abnormalities in DED remains a formidable challenge, as current therapies fail to halt disease progression. Our study found that activating α-7 nicotinic acetylcholine receptor (α7nAChR), a pivotal regulator in the anti-inflammatory pathway connecting the nervous and immune systems, effectively restores corneal epithelium integrity and enhances nerve sensitivity in DED, pointing to its promising therapeutic potential. Furthermore, we have revealed that α7nAChR stimulates genes involved in immune-mediated inflammatory progression and neuroregulation, inhibits the expression of transient receptor potential vanilloid-1 (TRPV1), reinstates corneal nerve density, and alleviates anxiety-like behaviors associated with severe DED by downregulating the proportion of CD86+ M1 macrophages (pro-inflammatory phenotypes). In summary, our findings underscore the activation of α7nAChR as a pioneering therapeutic approach for preserving corneal nerves balance and controlling inflammation in DED.

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