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Circ-CAMTA1 regulated by Ca2+ influx inhibited pyruvate carboxylase activity and modulate T cell function in patients with systemic lupus erythematosus

ABSTRACT: Circ-CAMTA1 regulated by Ca2+ influx inhibited pyruvate carboxylase activity and modulate T cell function in patients with systemic lupus erythematosus

PROVIDER: PRJNA1168142 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR30866637_1.fastq.gz	Fastqsanger.gz
	SRR30866637_2.fastq.gz	Fastqsanger.gz
	SRR30866638_1.fastq.gz	Fastqsanger.gz
	SRR30866638_2.fastq.gz	Fastqsanger.gz
	SRR30866639_1.fastq.gz	Fastqsanger.gz

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Circ-CAMTA1 regulated by Ca2+ influx inhibited pyruvate carboxylase activity and modulate T cell function in patients with systemic lupus erythematosus

Project description:The expression profiles of circRNAs in Jurkats cells, co-cultured with and without ionomycin, were analyzed by next-generation sequencing and validated using real-time polymerase chain reaction. The identified Ca2+ influx-regulated circRNAs were further examined in T cells from 42 patients with SLE and 23 healthy controls. The biological function of specific circRNAs was investigated using transfection and RNA pull-down assay. After validation, we confirmed that the expression levels of circ-ERCC4, circ-NFATC2, circ-MYH10, circ-CAMTA1, circ-ASH1L, circ-SOCS7, and circ-ASAP1 were consistently increased in Jurkat cells following Ca2+ influx. The expression levels of circ-CAMTA1, circ-ASH1L, and circ-ASAP1 were significantly lower in T cells from patients with SLE, with even lower levels observed in those with higher disease activity. Interferon (IFN)-α was found to suppress the expression of circ-CAMTA1. Circ-CAMTA1 bound to pyruvate carboxylase and inhibited its biologic activity. Overexpression of circ-CAMTA1, but not its linear form, significantly decreased extracellular glucose levels. Furthermore, increased expression of circ-CAMTA1, but not its linear form, enhanced IL-2 secretion and the protein expression of NFAT1.

2024-11-06 | GSE278650 | GEO

Role of CAMTA1 gene under drought stress

Project description:The CAMTA1 mutant and Col-0 were studied under water and drought condition. The camta1 showed stunted primary root growth under osmotic stress. The expression analysis revealed drought recovery as major indicative pathway along with membrane and chloroplast related protein in camta1 under drought stress. Large number of positively regulated genes were related to osmotic balance, transporters, AP2 and ABA. We used Affymetrix expression analysis to validate the role of CAMTA1 under drought stress. The RNA of Col-0 and camta1 mutant were isolated in water and drought condition.The ATH1 gene chip was used for expression analysis.

2012-08-12 | E-GEOD-40061 | biostudies-arrayexpress

Role of CAMTA1 gene under drought stress

2012-08-13 | GSE40061 | GEO

Identification of CAMTA1 target genes in the adult mouse hippocampus

Project description:The formation of long-term memory requires signaling from the synapse to the nucleus to mediate neuronal activity-dependent gene transcription. Synapse-to-nucleus communication is initiated by influx of calcium ions through synaptic NMDA receptors and/or L-type voltage-gated calcium channels and involves the activation of transcription factors by calcium/calmodulin signaling in the nucleus. Recent studies have drawn attention to a new family of transcriptional regulators, the so-called calmodulin-binding transcription activator (CAMTA) proteins. CAMTAs are expressed at particularly high levels in the mouse and human brain, and we reasoned that, as calmodulin-binding transcription factors, CAMTAs may regulate the formation of long-term memory by coupling synaptic activity and calcium/calmodulin signaling to memory-related transcriptional responses. This hypothesis is supported by genetic studies that reported a correlation between CAMTA gene polymorphisms or mutations and cognitive capability in humans. Here, we show that acute knock-down of CAMTA1, but not CAMTA2, in the hippocampus of adult mice results in impaired performance in two memory tests, contextual fear conditioning and object-place recognition test. Short-term memory and neuronal morphology were not affected by CAMTA knock-down. Gene expression profiling in the hippocampus of control and CAMTA knock-down mice revealed a number of putative CAMTA1 target genes related to synaptic transmission and neuronal excitability. Patch clamp recordings in organotypic hippocampal slice cultures provided further evidence for CAMTA1-dependent changes in electrophysiological properties. In summary, our study provides experimental evidence that confirms previous human genetic studies and establishes CAMTA1 as a regulator of long-term memory formation.

2016-05-20 | GSE62122 | GEO

TAZ-CAMTA1 vs TAZ4A expressing MS1 cells

Project description:TAZ-CAMTA1 is a defining genetic aberration in the vascular cancer epithelioid hemangioendothelioma. We studied the transcriptome of TAZ-CAMTA1 and compared it to that of control or activated TAZ (TAZ4A)-expressing endothelial cells. We utilized an immortalized, mouse endothelial cell line known as MS1. We present and make available the first RNA-sequencing data of TAZ-CAMTA1's transcriptome in endothelial cells

2021-05-23 | GSE156801 | GEO

Integrated Profiling and Immunohistochemistry Analyses Link circ-BRIP1, circ-EPHB4 and Their Host Genes with Imatinib Resistance in Gastrointestinal Stromal Tumors

Project description:Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal neoplasms of the digestive tract. The majority of GIST patients eventually develop resistance to imatinib therapy. To identify the responsible mechanisms, we investigated the differentially expressed mRNAs and circRNAs in imatinib-resistant GISTs using SBC ceRNA microarrays. We found that 107 mRNAs and 521 circRNAs were significantly differentially expressed between imatinib-naïve and imatinib-resistant GIST tissue samples. qRT-PCR analyses validated that circ-BRIP1, circ-EPHB4 and circ-RECQL4 and their host genes were upregulated in imatinib-resistant GISTs, and circ-BRIP1, circ-EPHB4, and RECQL4 were associated with imatinib resistance, tumor relapse and progression, and metastasis in GIST patients. The expression levels of circ-BRIP1, circ-EPHB4 and their host genes were also evaluated using TMAs with 150 human GISTs. The expression level of EPHB4 was significantly increased in high-grade GISTs in comparison to low-grade GISTs and correlated with imatinib resistance. Specifically, we first developed a method for high-throughput analysis of the expression of differentially expressed circRNAs by ISH-IHC in a set of FFPE-tissue microarrays in GIST. Our results also suggested a possible role for circ-BRIP1, circ-EPHB4, and their host genes in the progression of GISTs.

2024-11-01 | GSE188700 | GEO

scRNAseq of TAZ-CAMTA1 expressing endothelial cells in vivo

Project description:TAZ-CAMTA1 is a defining genetic aberration in the vascular cancer epithelioid hemangioendothelioma. We generated a novel transgenic mouse that expresses TAZ-CAMTA1 in endothelial cells. These mice develop vascular tumors in the lung and die by average on day 40. We isolated GFP + endothelial cells from three five-week old TRE-TAZ-CAMTA1;Cdh5-tTA;TRE-GFP mice and subjected these endothelial cells to scRNA-seq via the 10X genomics platform

2021-05-23 | GSE156803 | GEO

RNA seq Analysis of Wild Type and CAMTA1 knockout HEK293T cell line

Project description:We knocked out the CAMTA1 gene in HEK293T cells and detected differences in RNA seq in wild-type and CAMTA1 KO cells

2022-09-28 | GSE197081 | GEO

circ-ZNF609 regulates G1-S progression in Rhabdomyosarcoma

Project description:Circular RNAs (circRNAs) represent a class of covalently closed RNAs, derived from a non-canonical splicing event, ubiquitously expressed among Eukaryotes and conserved among different species. We identified a circRNA (circ-ZNF609) involved in the regulation of human primary myoblast proliferation. Upon its depletion, the percentage of proliferating myoblasts was highly reduced. To deepen our knowledge about circ-ZNF609 role in cell cycle regulation, we studied its expression and function in Rhabdomyosarcoma (RMS), a pediatric skeletal muscle malignancy. We found that circ-ZNF609 is up-regulated in biopsies from both the two major RMS subtypes, the alveolar (ARMS) and the embryonal (ERMS), and we discovered that its knock-down blocks proliferation of an ERMS-derived cell line, while it has no effect on ARMS-derived cells. To understand the mechanism through which circ-ZNF609 affects cell proliferation we compared the different effects of circ-ZNF609 depletion in ERMS and ARMS and we identified genes and pathways on which the circRNA acts.

2018-12-14 | GSE117609 | GEO

RNA seq Analysis of Wild Type and CAMTA1 knockout SH-SY5Y cell line

Project description:We knocked out the CAMTA1 gene in SH-SY5Y cells and detected differences in RNA seq in wild-type and CAMTA1 KO cells

2022-09-28 | GSE205687 | GEO