Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Receptor-specific interactome as a hub for rapid cue-induced selective translation in axons

ABSTRACT: During neuronal wiring, extrinsic cues trigger the local translation of specific mRNAs in axons via cell surface receptors. The coupling of ribosomes to receptors has been proposed as a mechanism linking signals to local translation but it is not known how broadly this mechanism operates, nor whether it can selectively regulate mRNA translation. We report that receptor-ribosome coupling is employed by multiple guidance cue receptors and this interaction is mRNA-dependent. We find that different receptors bind to distinct sets of mRNAs and RNA-binding proteins. Cue stimulation induces rapid dissociation of ribosomes from receptors and the selective translation of receptor-specific mRNAs in retinal axon growth cones. Further, we show that receptor-ribosome dissociation and cue-induced selective translation are inhibited by simultaneous exposure to translation-repressive cues, suggesting a novel mode of signal integration. Our findings reveal receptor-specific interactomes and provide a general model for the rapid, localized and selective control of cue-induced translation.

OTHER RELATED OMICS DATASETS IN: PXD015650

ORGANISM(S): Homo sapiens

PROVIDER: GSE135338 | GEO | 2019/11/29

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

LC-MSMS of DCC and Neuropilin-1 immunoprecipitated samples from Xenopus Laevis brains

Project description:During neuronal wiring, extrinsic cues trigger the local translation of specific mRNAs in axons via cell surface receptors. The coupling of ribosomes to receptors has been proposed as a mechanism linking signals to local translation but it is not known how broadly this mechanism operates, nor whether it can selectively regulate mRNA translation. Here, we analyzed the interactome of endogenous DCC and Neuropilin-1 by analysing immunoprecipitated samples obtained from Xenopus Laevis brains with LC-MSMS. We find that DCC and Neuropilin-1 bind to ribosomal proteins and specific RNA-binding proteins confirming that multiple guidance cue receptors can bind to ribosomes and may use receptor-ribosome coupling to regulate cue-induced local translation in axons.

2019-12-02 | PXD015650 | Pride

The ASC-1 complex promotes translation initiation of the scanning ribosomes

Project description:Translation is initiated by binding of the eIF4F complex to the 5' cap of the mRNA, which is followed by scanning of the initiation codon by scanning ribosomes. Here we demonstrate that the ASC-1 complex (ASCC), which was previously shown to promote the dissociation of colliding 80S ribosomes, associates with the scanning ribosomes to regulate translation initiation. Sel-TCP-seq analysis revealed that ASCC3, a subunit of ASCC with a helicase domain, localizes predominantly to the 5' untranslated region of mRNAs. Knockdown of ASCC3 resulted in reduced translation efficiency associated with reduced 43S preinitiation complex (PIC) loading and a reduced speed of scanning ribosomes. In addition, depletion of the ubiquitin ligase ZNF598, a sensor of collided 80S ribosomes, also reduces the PIC loading and speed of scanning ribosomes. Our results have thus revealed that ASCC is required not only for dissociation of colliding 80S ribosomes, but also for efficient translation initiation by scanning ribosomes.

2023-03-31 | GSE186502 | GEO

Bone marrow macrophage (BMMF) response to IFNgR+FcgRI coincidence detection

2014-03-01 | GSE54811 | GEO

Bone marrow macrophage (BMMF) response to IFNgR+FcgRI coincidence detection

Project description:Different cell types that make an organism use a small number of identical signaling modules to integrate external cues and elicit diverse functions. How the specificity of functional outcomes is achieved is unclear. It must lie within the context in which the external cue is perceived and integrated by the target cell. Within the innate immune system, we discovered communication between two classes of heterologous receptors designed to integrate external cues into context-specific response. Using IFNgR as an example, we describe the structural and functional collaboration between cytokine receptors and the ITAM signaling module, in this case the Fcg-chain at the plasma membrane of phagocytes. Receptor coupling allowed IFNg to modify FcgRI responses during IgG-mediated phagocytosis and to specify cell autonomous antimicrobial functions. BMMF were left unstimulated or were stimulated in duplicates for 6 hrs with IFNÎ³, IgG2a-opsonised SRBC or both. cDNA was analyzed using 8-sample Mouse Ref-8 v2.0 Illumina array. Expressed genes were defined as those with p<0.05, and their relative expression values were calculated using unstimulated cells as calibrator. IgG2a against SRBC was produced by hybridoma TIB111 from ATCC

2014-03-01 | E-GEOD-54811 | biostudies-arrayexpress

TSAA

Project description:Translational regulation can be studied on a global scale by integrating polysome fractionation of mRNAs with microarray hybridization. This approach is based on the fact that translationally quiescent mRNAs are sequestered within messenger ribonucleoprotein (mRNP) particles or associated with single ribosomes (monosomes), whereas actively translated mRNAs are associated with multiple ribosomes (polysomes). The mRNAs associated within these fractions are then used to interrogate microarrays, providing insight into how the translational state of individual mRNAs is modified by environmental cues. In this study, we coupled polysome fractionation with microarray detection in order to identify changes in the translation state of the A. fumigatus transcriptome under conditions that perturb ER homeostasis such as chemical stress (DTT, tunicamycin) or thermal stress (shift from 25 degrees celsius to 37 degrees celsius).

2014-10-24 | E-MTAB-2027 | biostudies-arrayexpress

Selective translation by alternative bacterial ribosomes

Project description:Selective translation by alternative bacterial ribosomes

| PRJNA525595 | ENA

McFarland2020 - Totally Asymmetric Simple Exclusion Process (TASEP) model describing the movement of particles (ribosomes) along a lattice (the mRNA)

Project description:A stochastic simulation of yeast translation using Total Asymmetric Simple Exclusion Principle (TASEP) principles, representing ribosomes, tRNAs, mRNAs, and a tRNA re-charging process involving aminoacyl tRNA synthetases

2020-02-05 | MODEL2001080004 | BioModels

Selective 40S footprinting reveals that scanning ribosomes remain cap-tethered in human cells

Project description:Translation regulation occurs largely during initiation. Currently, translation initiation can be studied in vitro, but these systems lack features present in vivo and on endogenous mRNAs. Here we develop selective 40S footprinting for visualizing initiating 40S ribosomes on endogenous mRNAs in vivo. It pinpoints where on an mRNA initiation factors join the ribosome to act, and where they leave. We discover that in human cells most scanning ribosomes remain attached to the 5’ cap. Consequently, only one ribosome scans a 5’UTR at a time, and 5’UTR length affects translation efficiency. We discover that eIF3B, eIF4G1 and eIF4E remain on translating 80S ribosomes with a decay half-length of ~12 codons. Hence ribosomes retain these initiation factors while translating short upstream Open Reading Frames (uORFs), providing an explanation for how ribosomes can re-initiate translation after uORFs in humans. This method will be of use for studying translation initiation mechanisms in vivo.

2020-06-25 | GSE139391 | GEO

Receptor-specific interactome as a hub for rapid cue-induced selective translation in axons

Project description:Receptor-specific interactome as a hub for rapid cue-induced selective translation in axons

| PRJNA558460 | ENA

Ribosome quality control activity potentiates vaccinia virus protein synthesis during infection

Project description:Ribosomes are highly abundant cellular machines that perform the essential task of translating the genetic code into proteins. Cellular translation activity is finely tuned and proteostasis insults, such as those incurred upon viral infection, activate stress signaling pathways that result in translation reprogramming. Viral infection selectively shuts down host mRNA while redistributing ribosomes for selective translation of viral mRNAs. The intricacies of this selective ribosome shuffle from host to viral mRNAs are poorly understood. Here, we uncover a role for the ribosome associated quality control (RQC) factor ZNF598, a sensor for collided ribosomes, as a critical factor for vaccinia virus mRNA translation. Collided ribosomes are sensed by ZNF598, which ubiquitylates 40S subunit proteins uS10 and eS10 and thereby initiates RQC-dependent nascent chain degradation and ribosome recycling. We show that vaccinia infection in human cells enhances uS10 ubiquitylation indicating an increased burden on RQC pathways during viral propagation. Consistent with an increased RQC demand, we demonstrate that vaccinia virus replication is impaired in cells which either lack ZNF598 or contain a ubiquitylation deficient version of uS10. Using SILAC-based proteomics and concurrent RNAseq analysis, we determine that host translation of vaccinia virus mRNAs is compromised in cells that lack RQC activity as compared to control cells whereas there was little evidence of differences in host or viral transcription. Additionally, vaccinia virus infection resulted in a loss of cellular RQC activity, suggesting that ribosomes engaged in viral protein production recruit ZNF598 away from its function in host translation. Thus, co-option of ZNF598 by vaccinia virus plays a critical role in translational reprogramming that is needed for optimal viral propagation.

2021-01-05 | MSV000086660 | MassIVE

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