Evidence map›Paper›PMID 21464312›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2011

Deactivation of Akt by a small molecule inhibitor targeting pleckstrin homology domain and facilitating Akt ubiquitination.

Hakryul Jo, Pang-Kuo Lo, Yitang Li, Fabien Loison, Sarah Green, Jake Wang, Leslie E Silberstein, Keqiang Ye, Hexin Chen, Hongbo R Luo

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
2.5field-weighted citation impact, top 10% 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

38 citing papers in PubMed, 77 citations in OpenAlex.

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  5. Detecting Förster resonance energy transfer in living cells by conventional and spectral flow cytometry.Cytometry. Part A : the journal of the International Society for Analytical Cytology · 2022
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  12. Primary cilia and the reciprocal activation of AKT and SMAD2/3 regulate stretch-induced autophagy in trabecular meshwork cells.Proceedings of the National Academy of Sciences of the United States of America · 2021
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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

10 authors at 4 institutions in 1 country.

Hakryul JoDepartment of Pathology, Harvard Medical School, Dana-Farber/Harvard Cancer Center, Boston, MA 02115, USA.
Pang-Kuo Lo
Yitang Li
Fabien Loison
Sarah Green
Jake Wang
Leslie E Silberstein
Keqiang Ye
Hexin Chen
Hongbo R Luo
Dana-Farber/Harvard Cancer Center · USHarvard University · USUniversity of South Carolina · USEmory University · US

Funding

TRANSFUSION BIOLOGY AND MEDICINET32HL066987 · NHLBI · CHILDREN'S HOSPITAL BOSTON · PI JOHN P MANIS · 2001 to 2026
$10.2M
Enhancing neutrophil function in neutropenia-related pneumoniaR01HL092020 · NHLBI · BOSTON CHILDREN'S HOSPITAL · PI LUO, HONGBO R · 2009 to 2022
$5.2M
Molecular basis of neutrophil spontaneous deathR01HL085100 · NHLBI · BOSTON CHILDREN'S HOSPITAL · PI LUO, HONGBO R · 2007 to 2010
$2.0M
HTS for enhancers of neutrophil function that specifically augment PIP3 signalR01AI076471 · NIAID · BOSTON CHILDREN'S HOSPITAL · PI LUO, HONGBO R · 2009 to 2012
$1.5M
Signal transduction in neutrophil chemotaxisR01GM076084 · NIGMS · BOSTON CHILDREN'S HOSPITAL · PI LUO, HONGBO R · 2006 to 2010
$1.5M
NHLBI NIH HHS HL066987NHLBI NIH HHS HL085100NHLBI NIH HHS HL092020NHLBI NIH HHS R01 HL085100NHLBI NIH HHS R01 HL092020NHLBI NIH HHS T32 HL066987NIAID NIH HHS AI076471NIAID NIH HHS R01 AI076471NIGMS NIH HHS GM076084NIGMS NIH HHS R01 GM076084
6 · The paper itself

Abstract

The phosphatidylinositol-3,4,5-triphosphate (PIP3) binding function of pleckstrin homology (PH) domain is essential for the activation of oncogenic Akt/PKB kinase. Following the PIP3-mediated activation at the membrane, the activated Akt is subjected to other regulatory events, including ubiquitination-mediated deactivation. Here, by identifying and characterizing an allosteric inhibitor, SC66, we show that the facilitated ubiquitination effectively terminates Akt signaling. Mechanistically, SC66 manifests a dual inhibitory activity that directly interferes with the PH domain binding to PIP3 and facilitates Akt ubiquitination. A known PH domain-dependent allosteric inhibitor, which stabilizes Akt, prevents the SC66-induced Akt ubiquitination. A cancer-relevant Akt1 (e17k) mutant is unstable, making it intrinsically sensitive to functional inhibition by SC66 in cellular contexts in which the PI3K inhibition has little inhibitory effect. As a result of its dual inhibitory activity, SC66 manifests a more effective growth suppression of transformed cells that contain a high level of Akt signaling, compared with other inhibitors of PIP3/Akt pathway. Finally, we show the anticancer activity of SC66 by using a soft agar assay as well as a mouse xenograft tumor model. In conclusion, in this study, we not only identify a dual-function Akt inhibitor, but also demonstrate that Akt ubiquitination could be chemically exploited to effectively facilitate its deactivation, thus identifying an avenue for pharmacological intervention in Akt signaling.

Indexed as

Allosteric RegulationAmino Acid SubstitutionAnimalsAntineoplastic AgentsCyclohexanonesFemaleHEK293 CellsHeLa CellsHumansMiceMice, Inbred NODMice, SCIDMutation, MissensePhosphatidylinositolsProtein BindingProtein Kinase InhibitorsAKT1 protein, humanAntineoplastic AgentsCyclohexanonesPhosphatidylinositolsphosphoinositide-3,4,5-triphosphateProtein Kinase InhibitorsProto-Oncogene Proteins c-aktPyridinesSC-66 compound

Identifiers

PMID21464312
PMCPMC3081014
OpenAlexW2159732007

What OpenQuestion holds

Textmetadata
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.