Evidence map›Paper›PMID 14997382›Full record

ArticleJournal of cancer research and clinical oncology2004

Overexpression of E2F1 associated with LOH at RB locus and hyperphosphorylation of RB in non-small cell lung carcinoma.

Miwa Akasofu Imai, Yoshio Oda, Makoto Oda, Isao Nakanishi, Ei Kawahara

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In one paragraph

Article in Journal of cancer research and clinical oncology, 2004. 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
0.5field-weighted citation impact, top 34% 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, 31 citations in OpenAlex.

  1. Article
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  7. E2F8 as a Novel Therapeutic Target for Lung Cancer.Journal of the National Cancer Institute · 2015
    Article
  8. E2F2 induction in related to cell proliferation and poor prognosis in non-small cell lung carcinoma.International journal of clinical and experimental pathology · 2015
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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

5 authors at 3 institutions in 2 countries.

Miwa Akasofu ImaiDepartment of Health Science, Ishikawa Prefectural Nursing University, Kahoku-shi, Ishikawa, Japan.
Yoshio Oda
Makoto Oda
Isao Nakanishi
Ei Kawahara
Kanazawa University · JPIshikawa Prefectural Nursing University · JPRMIT University · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeE2F1 plays a critical role in cell proliferation, and its function is controlled by the retinoblastoma (RB) protein. We examined the expression of E2F1 and the aberration of RB gene and protein to elucidate what factors contribute to the overexpression of E2F1 in non-small cell lung carcinomas.

methodsThe expression level of E2F1 in tissues of non-small cell lung carcinomas was measured by means of quantitative reverse transcription-polymerase chain reaction and immunohistochemistry. For RB, we examined loss of heterozygosity (LOH) by PCR-restriction fragment length polymorphism and a variable number of tandem repeats, and protein expression by immunohistochemistry.

resultsFifteen cases of carcinoma (46%) showed high transcription levels of E2F1 gene. Immunohistochemically, almost all (14 of 15) cases overexpressing E2F1 mRNA were positive for E2F1 protein. LOH at the RB locus was found in 13 of 30 informative cases. In 13 cases with LOH, ten showed overexpression of E2F1 mRNA and protein. Immunohistochemical positivity for phosphorylated RB protein was also closely correlated with overexpression of E2F1.

conclusionsOur results suggest that overexpression of E2F1, induced both by LOH at the RB locus and anomalous phosphorylation of the RB protein, is involved in the development of non-small cell lung carcinoma.

Indexed as

Loss of HeterozygosityAdenocarcinomaAdultAgedAged, 80 and overCarcinoma, Non-Small-Cell LungCarcinoma, Squamous CellCell Cycle ProteinsDNA-Binding ProteinsE2F1 Transcription FactorE2F Transcription FactorsFemaleGene Expression Regulation, NeoplasticHumansImmunohistochemistryLung NeoplasmsCell Cycle ProteinsDNA-Binding ProteinsE2F1 protein, humanE2F1 Transcription FactorE2F Transcription FactorsRetinoblastoma ProteinRNA, MessengerTranscription Factors

Identifiers

PMID14997382
PMCPMC12161844
OpenAlexW2063418926

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.