Evidence map›Paper›PMID 23322780›Full record

ArticleThe Journal of biological chemistry2013

Mutations in critical domains confer the human mTOR gene strong tumorigenicity.

Avaniyapuram Kannan Murugan, Ali Alzahrani, Mingzhao Xing

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
2.2field-weighted citation impact, top 12% 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

30 citing papers in PubMed, 46 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Higher mTOR Expression: A Marker of Poor Outcome in Patients with de Novo AML.Indian journal of hematology & blood transfusion : an official journal of Indian Society of Hematology and Blood Transfusion · 2023
    Article
  5. Review
  6. The ClinGen Brain Malformation Variant Curation Expert Panel: Rules for somatic variants in AKT3, MTOR, PIK3CA, and PIK3R2.Genetics in medicine : official journal of the American College of Medical Genetics · 2022
    Article
  7. Article
  8. Review
  9. Review
  10. Article
  11. Article
  12. Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. mTOR inhibitors in urinary bladder cancer.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2016
    Review
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

3 authors at 2 institutions in 1 country.

Avaniyapuram Kannan MuruganLaboratory for Cellular and Molecular Thyroid Research, Division of Endocrinology and Metabolism, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA.
Ali Alzahrani
Mingzhao Xing
Johns Hopkins Medicine · USJohns Hopkins University · US

Funding

Molecular Events in the PI3K/Akt Pathway in Thyroid CancerR01CA134225 · NCI · JOHNS HOPKINS UNIVERSITY · PI XING, MICHAEL MINGZHAO · 2009 to 2013
$1.6M
NCI NIH HHS R01 CA134225NCI NIH HHS R01CA134225
6 · The paper itself

Abstract

Mammalian target of rapamycin (mTOR) is a serine/threonine protein kinase that regulates cell growth, proliferation, and survival. mTOR is frequently activated in human cancers and is a commonly sought anticancer therapeutic target. However, whether the human mTOR gene itself is a proto-oncogene possessing tumorigenicity has not been firmly established. To answer this question, we mutated evolutionarily conserved amino acids, generated eight mutants in the HEAT repeats (M938T) and the FAT (W1456R and G1479N) and kinase (P2273S, V2284M, V2291I, T2294I, and E2288K) domains of mTOR, and studied their oncogenicity. On transient expression in HEK293T cells, these mTOR mutants displayed elevated protein kinase activities accompanied by activated mTOR/p70S6K signaling at varying levels, demonstrating the gain of function of the mTOR gene with these mutations. We selected P2273S and E2288K, the two most catalytically active mutants, to further examine their oncogenicity and tumorigenicity. Stable expression of the two mTOR mutants in NIH3T3 cells strongly activated mTOR/p70S6K signaling, induced cell transformation and invasion, and remarkably, caused rapid tumor formation and growth in athymic nude mice after subcutaneous inoculation of the transfected cells. This study confirms the oncogenic potential of mTOR suggested previously and demonstrates for the first time its tumorigenicity. Thus, beyond the pivotal position of mTOR to relay the oncogenic signals from the upstream phosphatidylinositol 3-kinase/Akt pathway in human cancer, mTOR is capable potentially of playing a direct role in human tumorigenesis if mutated. These results also further support the conclusion that mTOR is a major therapeutic target in human cancers.

Indexed as

Mutation, MissenseSignal TransductionAmino Acid SubstitutionAnimalsCell LineCell Transformation, NeoplasticHumansMiceMice, NudeNeoplasm InvasivenessNeoplasm TransplantationProtein Structure, TertiaryProto-Oncogene MasProto-Oncogene ProteinsRibosomal Protein S6 Kinases, 70-kDaTOR Serine-Threonine KinasesMAS1 protein, humanMTOR protein, humanProto-Oncogene MasProto-Oncogene ProteinsRibosomal Protein S6 Kinases, 70-kDaTOR Serine-Threonine Kinases

Identifiers

PMID23322780
PMCPMC3585084
OpenAlexW2065889524

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.