Evidence map›Paper›PMID 27019349›Full record

ArticlePloS one2016

TRIB1 Is Regulated Post-Transcriptionally by Proteasomal and Non-Proteasomal Pathways.

Sébastien Soubeyrand, Amy Martinuk, Paulina Lau, Ruth McPherson

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
2.1field-weighted citation impact, top 15% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

18 citing papers in PubMed, 25 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

Sébastien SoubeyrandAtherogenomics Laboratory, University of Ottawa Heart Institute, Ottawa, Canada.
Amy MartinukAtherogenomics Laboratory, University of Ottawa Heart Institute, Ottawa, Canada.
Paulina LauAtherogenomics Laboratory, University of Ottawa Heart Institute, Ottawa, Canada.
Ruth McPhersonAtherogenomics Laboratory, University of Ottawa Heart Institute, Ottawa, Canada.
University of Ottawa · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The TRIB1 gene has been associated with multiple malignancies, plasma triglycerides and coronary artery disease (CAD). Despite the clinical significance of this pseudo-kinase, there is little information on the regulation of TRIB1. Previous studies reported TRIB1 mRNA to be unstable, hinting that TRIB1 might be subject to post-transcriptional regulation. This work explores TRIB1 regulation, focusing on its post-transcriptional aspects. In 3 distinct model systems (HEK293T, HeLa and arterial smooth muscle cells) TRIB1 was undetectable as assessed by western blot. Using recombinant TRIB1 as a proxy, we demonstrate TRIB1 to be highly unstable at the protein and RNA levels. By contrast, recombinant TRIB1 was stable in cellular extracts. Blocking proteasome function led to increased protein steady state levels but failed to rescue protein instability, demonstrating that the 2 processes are uncoupled. Unlike as shown for TRIB2, CUL1 and TRCPβ did not play a role in mediating TRIB1 instability although TRCPβ suppression increased TRIB1 expression. Lastly, we demonstrate that protein instability is independent of TRIB1 subcellular localization. Following the identification of TRIB1 nuclear localization signal, a cytosolic form was engineered. Despite being confined to the cytosol, TRIB1 remained unstable, suggesting that instability occurs at a stage that precedes its nuclear translocation and downstream nuclear function. These results uncover possible avenues of intervention to regulate TRIB1 function by identifying two distinct regulatory axes that control TRIB1 at the post-transcriptional level.

Indexed as

beta-Transducin Repeat-Containing ProteinsBlotting, WesternCell LineCullin ProteinsHEK293 CellsHeLa CellsHumansIntracellular Signaling Peptides and ProteinsLeupeptinsProteasome Endopeptidase ComplexProteasome InhibitorsProtein Processing, Post-TranslationalProtein Serine-Threonine KinasesProtein StabilityProtein Structure, TertiaryReal-Time Polymerase Chain Reactionbenzyloxycarbonylleucyl-leucyl-leucine aldehydebeta-Transducin Repeat-Containing ProteinsCullin 1Cullin ProteinsIntracellular Signaling Peptides and ProteinsLeupeptinsProteasome Endopeptidase ComplexProteasome InhibitorsProtein Serine-Threonine KinasesRecombinant ProteinsRNA, MessengerTRIB1 protein, humanUntranslated Regions

Identifiers

PMID27019349
PMCPMC4809572
OpenAlexW2335654271

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.