Evidence map›Paper›PMID 16007129›Full record

ArticleOncogene2005

The retinoblastoma gene and its product are targeted by ICBP90: a key mechanism in the G1/S transition during the cell cycle.

Michaël Jeanblanc, Marc Mousli, Raphaël Hopfner, Kawtar Bathami, Nadine Martinet, Abdul-Qader Abbady, Jean-Claude Siffert, Eric Mathieu, Christian D Muller, Christian Bronner

Abstract read
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In one paragraph

Article in Oncogene, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers.

0numbers the graph read from it
0cells of the map it votes in
71citing papers in PubMed
–field-weighted citation impact
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

71 citing papers in PubMed.

  1. Review
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  8. Seasonal variation in the morphokinetics ofFrontiers in reproductive health · 2022
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11 more citing papers are in PubMed but not listed here.

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

10 authors.

Michaël JeanblancInserm UMR S392, Faculté de Pharmacie, 74 route du Rhin, BP 60024, 67401 Illkirch Cedex, France.
Marc Mousli
Raphaël Hopfner
Kawtar Bathami
Nadine Martinet
Abdul-Qader Abbady
Jean-Claude Siffert
Eric Mathieu
Christian D Muller
Christian Bronner

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The retinoblastoma protein (pRB) is encoded by the RB1 gene whose promoter contains several putative binding sites for ICBP90 (Inverted CCAAT box Binding Protein of 90 kDa), a transcriptional regulator of the topoisomerase IIalpha gene. ICBP90 has two consensus binding sites for pRB in its primary sequence. Here, we show that pRB and ICBP90 co-immunoprecipitate in cell extracts of proliferating human lung fibroblasts and of proliferating or confluent Jurkat cells. GST pull-down assays and immunocytochemistry, after cell synchronization in late G1 phase, confirmed this interaction. Overexpression of ICBP90 induces downregulation of pRB expression in lung fibroblasts as a result of mRNA decrease. DNA chromatin immunoprecipitation experiment shows that ICBP90 binds to the RB1 gene promoter under its methylated status. Overexpression of ICBP90 increases the S and G2/M phase cell fractions of serum-starved lung fibroblasts as assessed by flow cytometry analysis and increases topoisomerase IIalpha expression. Together, these results show that ICBP90 regulates pRB at the protein and gene transcription levels, thus favoring the entry into the S phase of the cells. We propose that ICBP90 overexpression, found in cancer cells, is involved in the altered checkpoint controls occurring in cancerogenesis.

Indexed as

G1 PhaseS PhaseBlotting, WesternCCAAT-Enhancer-Binding ProteinsChromatin ImmunoprecipitationDNA Topoisomerases, Type IIDown-RegulationFibroblastsFlow CytometryHumansImmunoprecipitationJurkat CellsLungMolecular Sequence DataPromoter Regions, GeneticRetinoblastoma ProteinCCAAT-Enhancer-Binding ProteinsDNA Topoisomerases, Type IIRetinoblastoma ProteinUbiquitin-Protein LigasesUHRF1 protein, human

Identifiers

PMID16007129

What OpenQuestion holds

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Registered trials

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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.