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Protein Kinase AMP-Activated Catalytic Subunit Alpha 1 (PRKAA1) knockdown effect on the transcriptome of primary human acute myeloid leukemia (AML) cells

ABSTRACT: Protein Kinase AMP-Activated Catalytic Subunit Alpha 1 (PRKAA1) knockdown effect on the transcriptome of primary human acute myeloid leukemia (AML) cells

PROVIDER: PRJNA464341 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR7126411.fastq.gz	Fastqsanger.gz
	SRR7126412.fastq.gz	Fastqsanger.gz
	SRR7126413.fastq.gz	Fastqsanger.gz
	SRR7126414.fastq.gz	Fastqsanger.gz
	SRR7126415.fastq.gz	Fastqsanger.gz

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Protein Kinase AMP-Activated Catalytic Subunit Alpha 1 (PRKAA1) knockdown effect on the transcriptome of primary human acute myeloid leukemia (AML) cells

Project description:To explore the function of AMPK signaling in acute myeloid leukemia (AML), we used shRNA to knock down the expression of PRKAA1, the catalytic subunit of the 5'-prime-AMP-activated protein kinase (AMPK), in primary human AML cells and performed RNA-seq experiment to profile transcriptional changes upon AMPK inactivation.

2018-06-01 | GSE114105 | GEO

Expression data of beta-subunit of Snf1 kinase in yeast Saccharomyces cerevisiae

Project description:The conserved Snf1/AMPK (AMP-activated protein Kinase) family is one of the central components in nutrient sensing and regulation of carbon metabolism in eukaryotes. It is also involved in several other processes such as stress resistance, invasive growth and ageing. Snf1 kinase is composed of a catalytic alpha-subunit Snf1, a regulatory gamma-subunit Snf4 and one of three possible beta-subunits, Sip1, Sip2 or Gal83. We used a systematic approach to study the role of the three beta-subunits by analyzing all 7 possible combinations of beta-subunit deletions together with the reference strain.

2010-05-27 | E-GEOD-20591 | biostudies-arrayexpress

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The γ2 subunit of AMP-activated protein kinase regulates mammalian heart rate

Project description:AMP-activated protein 1 kinase (AMPK), a phylogenetically conserved serine/threonine kinase regarded as a key cellular energy sensor, exists in eukaryotes as a heterotrimer comprising a catalytic α and regulatory β and γ subunits. In humans, activating mutations in the gene encoding the γ2 subunit of AMPK (PRKAG2) display a cardiac phenotype of left ventricular hypertrophy (LVH), conduction system disease, ventricular pre-excitation and increased cardiomyocyte glycogen accumulation. While existing transgenic models have elucidated the pathogenesis of several aspects of the disease5-7, the slow heart rate (sinus bradycardia) – a prominent feature of the disease – remains poorly understood. Here, using gene-targeting to generate mice which recapitulate this bradycardia, we demonstrate that γ2 AMPK activation perturbs fundamental mechanisms that determine sinoatrial pacemaker cell function. Reduction in the sarcolemmal hyperpolarization activated (“funny”) current (If) and damping of ryanodine receptor-derived diastolic local subsarcolemmal Ca2+ releases (LCRs)12,13 contribute to reduced sinoatrial cell spontaneous activity and, ultimately, to a lower heart rate. Pharmacological activation of AMPK reversibly reduces the beating rate of murine pluripotent stem cell-derived induced sinoatrial bodies. In contrast, using a mouse knock-out of γ2 AMPK, which exhibits an increased heart rate, we demonstrate a role for γ2 AMPK in physiological heart rate regulation, including an indispensable role in the bradycardic adaptation to endurance exercise. Through regulating the cardiac pacemaker and thereby heart rate, γ2 AMPK by virtue of its energy-sensing role, is a key physiological determinant of overall cardiac energy homeostasis.

2017-09-30 | GSE73047 | GEO

Expression data of β-subunit of Snf1 kinase in yeast Saccharomyces cerevisiae

Project description:The conserved Snf1/AMPK (AMP-activated protein Kinase) family is one of the central components in nutrient sensing and regulation of carbon metabolism in eukaryotes. It is also involved in several other processes such as stress resistance, invasive growth and ageing. Snf1 kinase is composed of a catalytic α-subunit Snf1, a regulatory γ-subunit Snf4 and one of three possible β-subunits, Sip1, Sip2 or Gal83. We used a systematic approach to study the role of the three β-subunits by analyzing all 7 possible combinations of β-subunit deletions together with the reference strain.

2010-05-10 | GSE20591 | GEO

Functional control of the Candida albicans cell wall by catalytic protein kinase A subunit Tpk1

Project description:The cyclic AMP-protein kinase A pathway has a central role in the biology of Candida albicans, a prominent fungal pathogen of humans. The two catalytic subunits for cyclic AMP-dependent protein kinase, Tpk1 (orf19.4892) and Tpk2 (orf19.2277), have divergent roles, and most studies indicate a more pronounced role for Tpk2. Here we dissect two Tpk1-responsive properties: adherence and cell wall integrity. Homozygous tpk1/tpk1 mutants are hyperadherent, and a Tpk1 defect enables biofilm formation in the absence of Bcr1, a central transcriptional regulator of biofilm adhesins. Microarray analysis revealed an enrichment for cell wall and surface functions among Tpk1-repressed genes, and overexpression of individual target genes indicates that cell surface proteins Als1, Als2, Als4, Csh1, and Csp37 contribute to Tpk1-regulated adherence. Tpk1 is also required for cell wall integrity, but has no role in the cell wall integrity gene expression response. Interestingly, increased expression of the adhesin gene ALS2 conferred a cell wall defect, as manifested in hypersensitivity to the cell wall inhibitor caspofungin and a shallow cell wall structure. Our findings indicate that Tpk1 has a central role in C. albicans cell wall properties that is exerted through repression of select cell surface protein genes. Two-color microarrays using a closed-loop experimental design to determine the effects of a M-bM-^HM-^Ftpk1 deletion in the absence or presence of the antifungal Caspofungin (CF)

2012-08-06 | E-GEOD-38846 | biostudies-arrayexpress

PRKDC, the catalytic subunit of DNA-dependent protein kinase, regulates EWS-FLI1 stability

Project description:PRKDC, the catalytic subunit of DNA-dependent protein kinase, regulates EWS-FLI1 stability

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Functional control of the Candida albicans cell wall by catalytic protein kinase A subunit Tpk1

2012-08-07 | GSE38846 | GEO

Kinetic Analysis of DNA Dependent Protein Kinase Catalytic Subunit

Project description:We investigated the dynamics of protein kinase DNA dependent protein kinase catalytic subunit (DNA-PKcs) through hydrogen deuterium exchange mass spectrometry. Over 1100 peptides could be monitored throughout the kinetics experiment, showing the utility of our nanospray HX-MS configuration for ultra-large proteins such as DNA-PKcs. To match the structurally unassigned helices to sequence from the large disordered regions of DNA-PKcs (a.a 2577-2773), we used integrative modelling. Two sequence assignments were possible. The cluster of models with the helix assignment towards the N-terminal side was favored by reduced kinetics of exchange as measured by HX-MS.

2019-12-10 | PXD016595 | Pride

Profiling hepatic microRNAs in zebrafish: Fluoxetine exposure mimics a fasting response that targets AMP-activated protein kinase (AMPK)

Project description:Recent evidence has suggested that fluoxetine, a serotonin-reuptake inhibitor and emerging environmental contaminant, can have non-targeted effects on metabolism in fish exposed to this waterborne pollutant. Using the highest, environmentally relevant, detectable level of fluoxetine (540 ng/L) we examined the impact of fluoxetine on the miRNA profile in the liver of zebrafish that were both fed and fasted for a period of 7 days. These results were further compared to the miRNA profile of zebrafish fasted and fed for 7 days, which were not exposed to fluoxetine. Results indicated that several miRNA that were involved with downregulating genes/pathways in response to fasting were also upregulated in fish exposed to fluoxetine, irrespective to fasting or feeding. These results suggest fluoxetine can have non-targeted effects on metabolic pathways mediated through miRNA expression. Furthermore, specific miRNA (dre-let-7d & dre-miR-140-5p) were found to target the catalytic subunit (AMPKa1 & AMPKa2, respectively) of AMP-Kinase, a master regulator of metabolism. Using predictive software and qPCR validation, combined with the expression profile of these two miRNA, we were able to establish a significant relationship between the expression of these specific miRNA to the downregulation of AMPKa subunit under the influence of 540 ng/L fluoxetine. Adult, female zebrafish were either fed or fasted for 7 days with and without the presense of 540 ng/L fluoxetine, and livers extracted and miRNA purified for miRNA microaary experiment.

2014-02-21 | E-GEOD-55229 | biostudies-arrayexpress

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