Evidence map›Paper›PMID 27556948›Full record

ArticleNature2016

Small molecule stabilization of the KSR inactive state antagonizes oncogenic Ras signalling.

Neil S Dhawan, Alex P Scopton, Arvin C Dar

Open access · greenAbstract read
In one paragraph

Article in Nature, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 59 papers.

0numbers the graph read from it
0cells of the map it votes in
59citing papers in PubMed
6.4field-weighted citation impact, top 3% 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

59 citing papers in PubMed, 97 citations in OpenAlex.

  1. Modulating pseudokinase conformation from the ATP-binding site.Structure (London, England : 1993) · 2026
    Article
  2. Review
  3. Allostery in Biomolecular Condensates.Journal of molecular biology · 2026
    Review
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. SOS1 and KSR1 modulate MEK inhibitor responsiveness to target resistant cell populations based on PI3K and KRAS mutation status.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  15. Review
  16. Does EGFR Signaling Mediate Orexin System Activity in Sleep Initiation?International journal of molecular sciences · 2023
    Review
  17. Article
  18. Article
  19. Article
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Neil S DhawanDepartment of Oncological Sciences, The Tisch Cancer Institute, The Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA.
Alex P ScoptonDepartment of Oncological Sciences, The Tisch Cancer Institute, The Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA.
Arvin C DarDepartment of Oncological Sciences, The Tisch Cancer Institute, The Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA.
Tisch Hospital · US

Funding

THE TISCH CANCER INSTITUTE - CANCER CENTER SUPPORT GRANTP30CA196521 · NCI · ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI · PI Deanna L Benson · 2015 to 2026
$35.4M
Targeting Ras-Dependent Cancers with a Chemical Switch for an Inactive KinaseDP2CA186570 · NCI · ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI · PI DAR, ARVIN · 2013 to 2017
$2.7M
NCI NIH HHS DP2 CA186570NCI NIH HHS P30 CA196521
6 · The paper itself

Abstract

Deregulation of the Ras-mitogen activated protein kinase (MAPK) pathway is an early event in many different cancers and a key driver of resistance to targeted therapies. Sustained signalling through this pathway is caused most often by mutations in K-Ras, which biochemically favours the stabilization of active RAF signalling complexes. Kinase suppressor of Ras (KSR) is a MAPK scaffold that is subject to allosteric regulation through dimerization with RAF. Direct targeting of KSR could have important therapeutic implications for cancer; however, testing this hypothesis has been difficult owing to a lack of small-molecule antagonists of KSR function. Guided by KSR mutations that selectively suppress oncogenic, but not wild-type, Ras signalling, we developed a class of compounds that stabilize a previously unrecognized inactive state of KSR. These compounds, exemplified by APS-2-79, modulate KSR-dependent MAPK signalling by antagonizing RAF heterodimerization as well as the conformational changes required for phosphorylation and activation of KSR-bound MEK (mitogen-activated protein kinase kinase). Furthermore, APS-2-79 increased the potency of several MEK inhibitors specifically within Ras-mutant cell lines by antagonizing release of negative feedback signalling, demonstrating the potential of targeting KSR to improve the efficacy of current MAPK inhibitors. These results reveal conformational switching in KSR as a druggable regulator of oncogenic Ras, and further suggest co-targeting of enzymatic and scaffolding activities within Ras-MAPK signalling complexes as a therapeutic strategy for overcoming Ras-driven cancers.

Indexed as

AllelesAllosteric RegulationCell LineEnzyme StabilityHumansMAP Kinase Signaling SystemMitogen-Activated Protein Kinase KinasesModels, MolecularMutationNeoplasmsOncogenesPhosphorylationProtein BindingProtein ConformationProtein MultimerizationProtein Serine-Threonine KinasesAPS-2-79KSR2 protein, humanMitogen-Activated Protein Kinase KinasesProtein Serine-Threonine KinasesPyridonesPyrimidinonesQuinazolinesraf Kinasesras Proteinstrametinib

Identifiers

PMID27556948
PMCPMC5161575
OpenAlexW2512649645

What OpenQuestion holds

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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.