Evidence map›Paper›PMID 34253290›Full record

ArticleeLife2021

Akt phosphorylates insulin receptor substrate to limit PI3K-mediated PIP3 synthesis.

Alison L Kearney, Dougall M Norris, Milad Ghomlaghi, Martin Kin Lok Wong, Sean J Humphrey, Luke Carroll, Guang Yang, Kristen C Cooke, Pengyi Yang, Thomas A Geddes and 5 more

Open access · goldAbstract read
In one paragraph

Article in eLife, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed
9.2field-weighted citation impact, top 1% 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

50 citing papers in PubMed, 77 citations in OpenAlex.

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  17. PI3 K/AKT/mTOR pathway and its role in breast cancer stem cells.Naunyn-Schmiedeberg's archives of pharmacology · 2025
    Review
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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

15 authors at 3 institutions in 2 countries.

Alison L Kearney *Charles Perkins Centre, School of Life and Environmental Sciences, University of Sydney, Sydney, Australia.ORCID 0000-0002-5736-3393
Dougall M Norris *Charles Perkins Centre, School of Life and Environmental Sciences, University of Sydney, Sydney, Australia.
Milad Ghomlaghi *Department of Biochemistry and Molecular Biology, School of Biomedical Sciences, Monash University, Clayton, Australia.ORCID 0000-0001-9047-1049
Martin Kin Lok WongCharles Perkins Centre, School of Life and Environmental Sciences, University of Sydney, Sydney, Australia.
Sean J HumphreyCharles Perkins Centre, School of Life and Environmental Sciences, University of Sydney, Sydney, Australia.
Luke CarrollCharles Perkins Centre, School of Life and Environmental Sciences, University of Sydney, Sydney, Australia.
Guang YangCharles Perkins Centre, School of Life and Environmental Sciences, University of Sydney, Sydney, Australia.
Kristen C CookeCharles Perkins Centre, School of Life and Environmental Sciences, University of Sydney, Sydney, Australia.
Pengyi YangCharles Perkins Centre, School of Mathematics and Statistics, University of Sydney, Sydney, Australia.
Thomas A GeddesCharles Perkins Centre, School of Life and Environmental Sciences, University of Sydney, Sydney, Australia.
Sungyoung ShinDepartment of Biochemistry and Molecular Biology, School of Biomedical Sciences, Monash University, Clayton, Australia.
Daniel J FazakerleyMetabolic Research Laboratories, Wellcome Trust-Medical Research Council Institute of Metabolic Science, University of Cambridge, Cambridge, United Kingdom.
Lan K NguyenDepartment of Biochemistry and Molecular Biology, School of Biomedical Sciences, Monash University, Clayton, Australia.ORCID 0000-0003-4040-7705
David E JamesCharles Perkins Centre, School of Life and Environmental Sciences, University of Sydney, Sydney, Australia.ORCID 0000-0001-5946-5257
James G BurchfieldCharles Perkins Centre, School of Life and Environmental Sciences, University of Sydney, Sydney, Australia.ORCID 0000-0002-6609-6151
The University of Sydney · AUAustralian Regenerative Medicine Institute · AUUniversity of Cambridge · GB

Funding

Medical Research Council MR/S007091/1
6 · The paper itself

Abstract

The phosphoinositide 3-kinase (PI3K)-Akt network is tightly controlled by feedback mechanisms that regulate signal flow and ensure signal fidelity. A rapid overshoot in insulin-stimulated recruitment of Akt to the plasma membrane has previously been reported, which is indicative of negative feedback operating on acute timescales. Here, we show that Akt itself engages this negative feedback by phosphorylating insulin receptor substrate (IRS) 1 and 2 on a number of residues. Phosphorylation results in the depletion of plasma membrane-localised IRS1/2, reducing the pool available for interaction with the insulin receptor. Together these events limit plasma membrane-associated PI3K and phosphatidylinositol (3,4,5)-trisphosphate (PIP3) synthesis. We identified two Akt-dependent phosphorylation sites in IRS2 at S306 (S303 in mouse) and S577 (S573 in mouse) that are key drivers of this negative feedback. These findings establish a novel mechanism by which the kinase Akt acutely controls PIP3 abundance, through post-translational modification of the IRS scaffold.

Indexed as

AnimalsAntigens, CDCell MembraneComputational BiologyGlucoseHumansInsulinInsulin Receptor Substrate ProteinsMechanistic Target of Rapamycin Complex 1MicePhosphatidylinositol 3-KinasePhosphatidylinositol 3-KinasesPhosphorylationProto-Oncogene Proteins c-aktReceptor, InsulinSignal TransductionAntigens, CDGlucoseINSR protein, humanInsulinInsulin Receptor Substrate ProteinsMechanistic Target of Rapamycin Complex 1Phosphatidylinositol 3-KinasePhosphatidylinositol 3-KinasesProto-Oncogene Proteins c-aktReceptor, InsulinAktcell biologycomputational biologyhumaninsulinmousephosphorylationPI3Kplasma membranesignal transductionsystems biology

Identifiers

PMID34253290
PMCPMC8277355
OpenAlexW3178316664

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.