Evidence map›Paper›PMID 18974117›Full record

ArticleCancer research2008

Reduced eukaryotic initiation factor 2Bepsilon-subunit expression suppresses the transformed phenotype of cells overexpressing the protein.

James W Gallagher, Neil Kubica, Scot R Kimball, Leonard S Jefferson

Open access · greenAbstract read
In one paragraph

Article in Cancer research, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
0.7field-weighted citation impact, top 29% 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

13 citing papers in PubMed, 22 citations in OpenAlex.

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  13. The helicase protein DHX29 promotes translation initiation, cell proliferation, and tumorigenesis.Proceedings of the National Academy of Sciences of the United States of America · 2009
    Article
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

4 authors at 2 institutions in 1 country.

James W GallagherDepartment of Cellular and Molecular Physiology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania 17033, USA.
Neil Kubica
Scot R Kimball
Leonard S Jefferson
Pennsylvania State University · USHarvard University · US

Funding

REGULATION OF LIVER GROWTH AND FUNCTIONR01DK013499 · NIDDK · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI KIMBALL, SCOT R · 1995 to 2018
$8.0M
REGULATION OF SKELETAL MUSCLE METABOLISMR01DK015658 · NIDDK · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI KIMBALL, SCOT R · 1986 to 2021
$7.4M
REGULATION OF LIVER GROWTH AND FUNCTIONR37DK013499 · NIDDK · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI JEFFERSON, LEONARD S · 1986 to 1993
–
NIDDK NIH HHS DK-13499NIDDK NIH HHS DK-15658NIDDK NIH HHS R01 DK013499NIDDK NIH HHS R01 DK015658
6 · The paper itself

Abstract

Eukaryotic initiation factor 2B (eIF2B), a five-subunit guanine nucleotide exchange factor, plays a key role in the regulation of mRNA translation. Expression of its epsilon-subunit is specifically up-regulated in certain conditions associated with increased cell growth. Therefore, the purpose of the present study was to examine the effect of repressing eIF2Bepsilon expression on growth rate, protein synthesis, and other characteristics of two tumorigenic cell lines that display up-regulated expression of the epsilon-subunit. Experiments were designed to compare spontaneously transformed fibroblasts to transformed mouse embryonic fibroblasts infected with a lentivirus containing a short hairpin RNA directed against eIF2Bepsilon. Cells expressing the short hairpin RNA displayed a reduction in eIF2Bepsilon abundance to 30% of the value observed in uninfected transformed mouse embryonic fibroblasts, with no change in the expression of any of the other four subunits. The repression of eIF2Bepsilon expression was accompanied by reductions in guanine nucleotide exchange factor activity and global rates of protein synthesis. Moreover, repressed eIF2Bepsilon expression led to marked reductions in cell growth rate in culture, colony formation in soft agar, and tumor progression in nude mice. Similar results were obtained in MCF-7 human breast cancer cells in which eIF2Bepsilon expression was repressed through transient transfection with a small interfering RNA directed against the epsilon-subunit. Overall, the results support a role for eIF2Bepsilon in the regulation of cell growth and suggest that it might represent a therapeutic target for the treatment of human cancer.

Indexed as

AnimalsBase SequenceCell Line, TransformedEukaryotic Initiation Factor-2HumansMiceMice, NudePolymerase Chain ReactionRNA, MessengerEukaryotic Initiation Factor-2RNA, Messenger

Identifiers

PMID18974117
PMCPMC2664734
OpenAlexW2155912294

What OpenQuestion holds

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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.