Evidence map›Paper›PMID 25918246›Full record

ArticleMolecular and cellular biology2015

mTOR Complex 2 Stabilizes Mcl-1 Protein by Suppressing Its Glycogen Synthase Kinase 3-Dependent and SCF-FBXW7-Mediated Degradation.

Junghui Koo, Ping Yue, Xingming Deng, Fadlo R Khuri, Shi-Yong Sun

Open access · bronzeAbstract read
In one paragraph

Article in Molecular and cellular biology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
3.2field-weighted citation impact, top 8% 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

32 citing papers in PubMed, 52 citations in OpenAlex.

  1. Article
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  4. Molecular insights and clinical implications for the tumor suppressor role of SCFBiochimica et biophysica acta. Reviews on cancer · 2024
    Review
  5. Cells · 2023
    Article
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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

5 authors at 2 institutions in 1 country.

Junghui KooDepartment of Hematology and Medical Oncology, Emory University School of Medicine and Winship Cancer Institute, Atlanta, Georgia, USA.
Ping YueDepartment of Hematology and Medical Oncology, Emory University School of Medicine and Winship Cancer Institute, Atlanta, Georgia, USA.
Xingming DengDepartment of Radiation Oncology, Emory University School of Medicine and Winship Cancer Institute, Atlanta, Georgia, USA.
Fadlo R KhuriDepartment of Hematology and Medical Oncology, Emory University School of Medicine and Winship Cancer Institute, Atlanta, Georgia, USA.
Shi-Yong SunDepartment of Hematology and Medical Oncology, Emory University School of Medicine and Winship Cancer Institute, Atlanta, Georgia, USA ssun@emory.edu.
Emory University · USWinship Cancer Institute

Funding

Enhancing the mTOR-targeted cancer therapyR01CA118450 · NCI · EMORY UNIVERSITY · PI SUN, SHI-YONG · 2006 to 2015
$2.6M
Therapeutic potential of mTOR kinase inhibitors in lung cancerR01CA160522 · NCI · EMORY UNIVERSITY · PI SUN, SHI-YONG · 2012 to 2016
$1.9M
NCI NIH HHS NIH R01 CA118450NCI NIH HHS R01 CA118450NCI NIH HHS R01 CA160522
6 · The paper itself

Abstract

mTOR complex 2 (mTORC2) regulates cell survival and growth through undefined mechanisms. Mcl-1, a Bcl-2 family protein, functions as an oncogenic protein. The connection between mTORC2 and Mcl-1 stability has not been established and was thus the focus of this study. Mcl-1 levels in cancer cells were decreased by mTOR kinase inhibitors (TORKinibs), which inhibit both mTORCs, by knocking down rictor and by knocking out rictor or Sin1 but not by silencing raptor. TORKinib treatment and rictor knockdown did not alter Mcl-1 mRNA levels but rather decreased its protein stability. Moreover, TORKinib-induced Mcl-1 reduction was rescued by proteasome inhibition. Consistently, TORKinib increased Mcl-1 ubiquitination. Hence, it is clear that inhibition of mTORC2 enhances Mcl-1 degradation, resulting in Mcl-1 reduction. Suppression of glycogen synthase kinase 3 (GSK3) or FBXW7 rescued Mcl-1 reduction induced by TORKinibs or rictor knockdown. Thus, mTORC2 inhibition apparently induces Mcl-1 degradation through a GSK3-dependent and SCF-FBXW7-mediated mechanism. Intriguingly, we detected a direct association between mTORC2 and SCF-FBXW7; this association could be inhibited by TORKinib treatment, suggesting that mTORC2 may directly associate with and inhibit the SCF-FBXW7 complex, resulting in delayed Mcl-1 degradation. Collectively, our findings highlight a novel mechanism by which mTORC2 regulates cell survival and growth by stabilizing Mcl-1.

Indexed as

Carcinoma, Non-Small-Cell LungCell Cycle ProteinsCell Line, TumorCell ProliferationF-Box ProteinsF-Box-WD Repeat-Containing Protein 7Glycogen Synthase Kinase 3HumansLungLung NeoplasmsMechanistic Target of Rapamycin Complex 2Multiprotein ComplexesMyeloid Cell Leukemia Sequence 1 ProteinProtein StabilityProteolysisRNA, MessengerCell Cycle ProteinsF-Box ProteinsF-Box-WD Repeat-Containing Protein 7FBXW7 protein, humanGlycogen Synthase Kinase 3MCL1 protein, humanMechanistic Target of Rapamycin Complex 2Multiprotein ComplexesMyeloid Cell Leukemia Sequence 1 ProteinRNA, MessengerSKP Cullin F-Box Protein LigasesTOR Serine-Threonine KinasesUbiquitin-Protein Ligases

Identifiers

PMID25918246
PMCPMC4456440
OpenAlexW1848822342

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.