Evidence map›Paper›PMID 34120142›Full record

ArticleOncogene2021

Critical requirement of SOS1 RAS-GEF function for mitochondrial dynamics, metabolism, and redox homeostasis.

Rósula García-Navas, Pilar Liceras-Boillos, Carmela Gómez, Fernando C Baltanás, Nuria Calzada, Cristina Nuevo-Tapioles, José M Cuezva, Eugenio Santos

Open access · hybridAbstract read
In one paragraph

Article in Oncogene, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
1.9field-weighted citation impact, top 13% 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

18 citing papers in PubMed, 32 citations in OpenAlex.

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  6. SOS1 inhibitor BI-3406 shows in vivo antitumor activity akin to genetic ablation and synergizes with a KRASProceedings of the National Academy of Sciences of the United States of America · 2025
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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

8 authors at 3 institutions in 1 country.

Rósula García-NavasCentro de Investigación del Cáncer-Instituto de Biología Molecular y Celular del Cáncer (CSIC - Universidad de Salamanca), Salamanca, Spain.
Pilar Liceras-BoillosCentro de Investigación del Cáncer-Instituto de Biología Molecular y Celular del Cáncer (CSIC - Universidad de Salamanca), Salamanca, Spain.
Carmela GómezCentro de Investigación del Cáncer-Instituto de Biología Molecular y Celular del Cáncer (CSIC - Universidad de Salamanca), Salamanca, Spain.
Fernando C BaltanásCentro de Investigación del Cáncer-Instituto de Biología Molecular y Celular del Cáncer (CSIC - Universidad de Salamanca), Salamanca, Spain.
Nuria CalzadaCentro de Investigación del Cáncer-Instituto de Biología Molecular y Celular del Cáncer (CSIC - Universidad de Salamanca), Salamanca, Spain.
Cristina Nuevo-TapiolesDepartamento de Biología Molecular, Centro de Biología Molecular Severo Ochoa3, (CSIC - Universidad Autónoma de Madrid), Madrid, Spain.ORCID http://orcid.org/0000-0001-5809-2030
José M CuezvaDepartamento de Biología Molecular, Centro de Biología Molecular Severo Ochoa3, (CSIC - Universidad Autónoma de Madrid), Madrid, Spain.ORCID http://orcid.org/0000-0003-1118-248X
Eugenio SantosCentro de Investigación del Cáncer-Instituto de Biología Molecular y Celular del Cáncer (CSIC - Universidad de Salamanca), Salamanca, Spain. esantos@usal.es.ORCID http://orcid.org/0000-0003-3565-0321
Universidad de Salamanca · ESCentro de Investigación Biomédica en Red · ESCentro de Investigación del Cáncer · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

SOS1 ablation causes specific defective phenotypes in MEFs including increased levels of intracellular ROS. We showed that the mitochondria-targeted antioxidant MitoTEMPO restores normal endogenous ROS levels, suggesting predominant involvement of mitochondria in generation of this defective SOS1-dependent phenotype. The absence of SOS1 caused specific alterations of mitochondrial shape, mass, and dynamics accompanied by higher percentage of dysfunctional mitochondria and lower rates of electron transport in comparison to WT or SOS2-KO counterparts. SOS1-deficient MEFs also exhibited specific alterations of respiratory complexes and their assembly into mitochondrial supercomplexes and consistently reduced rates of respiration, glycolysis, and ATP production, together with distinctive patterns of substrate preference for oxidative energy metabolism and dependence on glucose for survival. RASless cells showed defective respiratory/metabolic phenotypes reminiscent of those of SOS1-deficient MEFs, suggesting that the mitochondrial defects of these cells are mechanistically linked to the absence of SOS1-GEF activity on cellular RAS targets. Our observations provide a direct mechanistic link between SOS1 and control of cellular oxidative stress and suggest that SOS1-mediated RAS activation is required for correct mitochondrial dynamics and function.

Indexed as

HomeostasisMitochondriaMitochondrial DynamicsOxidation-ReductionReactive Oxygen SpeciesSOS1 ProteinAnimalsFibroblastsMiceMice, KnockoutOxidative StressSon of Sevenless ProteinsReactive Oxygen SpeciesSon of Sevenless ProteinsSOS1 ProteinSos1 protein, mouse

Identifiers

PMID34120142
PMCPMC8266680
OpenAlexW3172460958

What Socratic 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 Socratic graph.