Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

RNA-seq of KD, rescues of NMD factors, and UPF1-flag CLIP-seq in HeLa cells.

ABSTRACT: This study aims at confidently identifying endogenous nonsense mediated decay (NMD) targets. To achieve this purpose, we performed KD of a few NMD factors in HeLa cells. Additionally, we performed rescue experiments for each factor, expressing an RNAi-resistant version of the gene from a plasmid. To determine transcripts bound by UPF1 in HeLa cells, A construct with a C-terminally flag tagged version of UPF1 was expressed. In order to avoid competition with endogenous UPF1, a KD was performed.

ORGANISM(S): Homo sapiens

PROVIDER: GSE86148 | GEO | 2016/12/19

SECONDARY ACCESSION(S): PRJNA340370

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

Genome-wide analysis of cellular SMD or NMD substrates that regulated by Upf1 or PNRC2 in HeLa cell

Project description:Analysis of cellular SMD or NMD substrates that regulated by Upf1 and/or PNRC2 in HeLa cell. The hypothesis tested in the present study was that endogenous SMD or NMD substrates may co-regulated by Upf1 and PNRC2. Results provide important information that vast range of cellular SMD or NMD substrates are reqired PNRC2 for decay. Total RNA obtained from HeLa cells with downregulation of Upf1 or PNRC2 by siRNA. The up- or down-regulated transcripts were compare to control siRNA treated HeLa cell RNA extract. Significant transcripts were confirmed by replication

2012-02-28 | E-GEOD-26781 | biostudies-arrayexpress

Genome-wide analysis of cellular SMD or NMD substrates that regulated by Upf1 or PNRC2 in HeLa cell

2012-02-28 | GSE26781 | GEO

Genome-wide analysis of cellular NMD substrates that regulated by Upf1, PNRC2 or CTIF in HeLa cell

Project description:The first round of translation occurs on mRNAs bound by nuclear cap-binding complex (CBC), which is composed of nuclear cap-binding protein (CBP) 80 and 20. During this round of translation, aberrant mRNAs are recognized and downregulated in abundance by nonsense-mediated mRNA decay (NMD), which is one of the mRNA quality control mechanisms. Here our microarray analysis reveals that the level of cyclin-dependent kinase inhibitor 1A (CDKN1A) mRNAs increases in the cells depleted of cellular NMD factors. Intriguingly, CDKN1A mRNA contains an upstream open reading frame (uORF), which is one of NMD-inducing features. Using chimeric reporter constructs and confocal microscopy, we find that the uORF of CDKN1A mRNA is actively translated and modulates a translational efficiency of the main downstream ORF. Our findings provide the biological insights into the possible role of NMD in diverse pathways mediated by CDKN1A. The microarray analysis performed to analize the cellular NMD substrates that regulated by Upf1, PNRC2 and/or CTIF in HeLa cell. The hypothesis tested in the present study was that endogenous NMD substrates may co-regulated by Upf1, PNRC2 and CTIF. Results provide important information that vast range of cellular NMD substrates are reqired CTIF. Total RNA obtained from HeLa cells with downregulation of Upf1, PNRC2 or CTIF by siRNA. The up- or down-regulated transcripts were compare to control siRNA treated HeLa cell RNA extract. Significant transcripts were confirmed by replication.

2012-07-22 | E-GEOD-37538 | biostudies-arrayexpress

Genome-wide analysis of cellular NMD substrates that regulated by Upf1, PNRC2 or CTIF in HeLa cell

2012-07-23 | GSE37538 | GEO

Genome-wide analysis of Human Upf1, SMG5, SMG7 and PNRC2 downregulated substrates in HeLa cell

2012-11-01 | GSE34876 | GEO

Genome-wide analysis of Human Upf1, SMG5, SMG7 and PNRC2 downregulated substrates in HeLa cell

Project description:Analysis of cellular NMD (Nonsense-mediated mRNA decay) substrates that regulated by Upf1, SMG5, SMG7 and/or PNRC2 in HeLa cell. The hypothesis tested in the present study was that endogenous NMD substrates may co-regulated by Upf1, SMG5, SMG7 and PNRC2. Total RNA obtained from HeLa cells with downregulation of Upf1, SMG5, PNRC2 or SMG7 by siRNA. The up- or down-regulated transcripts were compare to control siRNA treated HeLa cell RNA extract. Significant transcripts were confirmed by replication

2012-11-01 | E-GEOD-34876 | biostudies-arrayexpress

UPF1 ATPase autoinhibition and activation modulate RNA binding kinetics and NMD efficiency 1

Project description:The RNA helicase UPF1 interacts with mRNAs, mRNA decay machinery, and the terminating ribosome to promote nonsense-mediated mRNA decay (NMD). Structural and biochemical data have revealed that UPF1 exists in an enzymatically autoinhibited “closed” state. Upon binding the NMD protein UPF2, UPF1 undergoes an extensive conformational change into a more enzymatically active “open” state, which exhibits enhanced ATPase and helicase activity. However, mechanically deficient UPF1 mutants can support efficient NMD, bringing into question the roles of UPF1 enzymatic autoinhibition and activation in NMD. Here, we identify two additional important features of the activated open state: slower nucleic acid binding kinetics and enhanced ATP-stimulated nucleic acid dissociation kinetics. Computational modeling based on empirical measurements of UPF1, UPF2, and RNA interaction kinetics predicts that the majority of UPF1-RNA binding and dissociation events in cells occur independently of UPF2 binding. We find that UPF1 mutants with either reduced or accelerated dissociation from RNA have NMD defects, whereas UPF1 mutants that are more dependent on UPF2 for catalytic activity remain active on well-established NMD targets. These findings support a model in which the kinetics of UPF1-mRNA interactions are important determinants of cellular NMD efficiency.

2024-05-29 | GSE246483 | GEO

UPF1 ATPase autoinhibition and activation modulate RNA binding kinetics and NMD efficiency 2

2024-05-29 | GSE246484 | GEO

Phosphorylated UPF1 (p-UPF1) RIP-seq using mouse Neuro-2A (N2A) neuroblastoma cells

Project description:To identify high-confidence NMD targets in mouse N2A neuroblastoma cells, we used our established transcriptome-wide RNA sequencing (RNA-seq) methodologies. Through parallel analyses of RNA-seq upon UPF1-knockdown (KD) and RNA immunoprecipitation (RIP-seq) footprinting of p-UPF1-bound RNAs, we identified 1027 high-confidence neuronal NMD targets.

2021-10-25 | GSE180134 | GEO

Translation-dependent displacement of UPF1 from coding sequences causes its enrichment in 3M-bM-^@M-^Y UTRs

Project description:The RNA helicase UPF1 is best known for its key function in mRNA nonsense-mediated mRNA decay (NMD), but has also been implicated in additional mRNA turnover mechanisms, telomere homeostasis, and DNA replication. In NMD, UPF1 recruitment to target mRNAs is thought to occur through interaction with release factors at terminating ribosomes, but evidence for translation-independent interaction of UPF1 with the 3M-bM-^@M-^Y untranslated region (UTR) of mRNAs has also been reported. To map UPF1 binding sites transcriptome-wide, we performed individual-nucleotide resolution UV crosslinking and immunoprecipitation (iCLIP) in human cells, untreated or after inhibiting translation by puromycin. We found a strong association of UPF1 with 3M-bM-^@M-^Y UTRs in undisturbed, translationally active cells and a significant increase in UPF1 binding to coding sequence (CDS) after translation inhibition. These results indicate that UPF1 binds RNA before translation and gets displaced from the CDS by translating ribosomes. This evidence for translation-independent UPF1-RNA interaction, which is corroborated by RNA immunoprecipitations experiments and by our observation that UPF1 also crosslinks to long non-coding RNAs, suggests that the decision to trigger NMD occurs after association of UPF1 with the mRNA, presumably through activation of RNA-bound UPF1 by aberrant translation termination. Examination of Upf1 binding preferences via iCLIP in untreated HeLa cells and HeLa cells, where translation is blocked by puromycin treatment in vivo crosslinking and immunoprecipitation strategy (iCLIP)

2013-06-20 | E-GEOD-47976 | biostudies-arrayexpress

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data