Evidence map›Paper›PMID 26732083›Full record

ArticleJournal of neuro-oncology2016

Impairment of stress granule assembly via inhibition of the eIF2alpha phosphorylation sensitizes glioma cells to chemotherapeutic agents.

Fabrício de Almeida Souza Vilas-Boas, Aristóbolo Mendes da Silva, Lirlândia Pires de Sousa, Kátia Maciel Lima, Juliana Priscila Vago, Lucas Felipe Fernandes Bittencourt, Arthur Estanislau Dantas, Dawidson Assis Gomes, Márcia Carvalho Vilela, Mauro Martins Teixeira and 1 more

Abstract read
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In one paragraph

Article in Journal of neuro-oncology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
3.1field-weighted citation impact, top 9% 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

31 citing papers in PubMed, 65 citations in OpenAlex.

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  12. Pathophysiology of stress granules: An emerging link to diseases (Review).International journal of molecular medicine · 2022
    Review
  13. Paclitaxel-induced stress granules increaseJournal of biomedical research · 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

11 authors at 2 institutions in 1 country.

Fabrício de Almeida Souza Vilas-BoasDepartment of Physiology and Biophysics, Biological Sciences Institute, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
Aristóbolo Mendes da SilvaDepartment of Morphology, Biological Sciences Institute, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
Lirlândia Pires de SousaDepartment of Clinical and Toxicological Analysis, Pharmacy Faculty, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
Kátia Maciel LimaDepartment of Clinical and Toxicological Analysis, Pharmacy Faculty, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
Juliana Priscila VagoDepartment of Clinical and Toxicological Analysis, Pharmacy Faculty, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
Lucas Felipe Fernandes BittencourtDepartment of Physiology and Biophysics, Biological Sciences Institute, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
Arthur Estanislau DantasDepartment of Biochemistry and Immunology, Biological Sciences Institute, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
Dawidson Assis GomesDepartment of Biochemistry and Immunology, Biological Sciences Institute, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
Márcia Carvalho VilelaDepartment of Health Sciences, Federal University of Juiz de Fora-Advanced Campus, Governador Valadares, Minas Gerais, 35010-177, Brazil.
Mauro Martins TeixeiraDepartment of Biochemistry and Immunology, Biological Sciences Institute, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
Lucíola Silva BarcelosDepartment of Physiology and Biophysics, Biological Sciences Institute, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil. luciolasbarcelos@gmail.com.
Universidade Federal de Minas Gerais · BRUniversidade Federal de Juiz de Fora · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Malignant gliomas are a lethal type of brain tumors that poorly respond to chemotherapeutic drugs. Several therapy resistance mechanisms have been characterized. However, the response to stress through mRNA translational control has not been evaluated for this type of tumor. A potential target would involve the alpha subunit of eukaryotic translation initiation factor (eIF2α) that leads to assembly of stress granules (SG) which are cytoplasmic granules mainly composed by RNA binding proteins and untranslated mRNAs. We assessed whether glioma cells are capable of assembling SG after exposure to different classes of chemotherapeutic agents through evaluation of the effects of interfering in this process by impairing the eIF2α signaling. C6 and U87MG cells were exposed to bortezomib, cisplatin, or etoposide. Forced expression of a dominant negative mutant of eIF2α (eIF2α(DN)) was employed to block this pathway. We observed that exposure to drugs stimulated SG assembly. This was reduced in eIF2α(DN)-transfected cells and this strategy enhanced chemotherapeutically-induced cell death for all drugs. Our data suggest that SG assembly occurs in glioma cells in response to chemotherapeutic drugs in an eIF2α-dependent manner and this response is relevant for drug resistance. Interfering with eIF2α signaling pathway may be a potential strategy for new co-adjuvant therapies to treat gliomas.

Indexed as

AnimalsAntineoplastic AgentsApoptosisBlotting, WesternBrain NeoplasmsCell ProliferationCytoplasmic GranulesEukaryotic Initiation Factor-2Fluorescent Antibody TechniqueGliomaHumansPhosphorylationRatsSignal TransductionTumor Cells, CulturedAntineoplastic AgentsEukaryotic Initiation Factor-2ChemotherapyeIF2αGliomaIntegrated stress responseStress granules

Identifiers

PMID26732083
OpenAlexW2230753958

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.