Evidence map›Paper›PMID 9819401›Full record

ArticleMolecular and cellular biology1998

The promyelocytic leukemia protein interacts with Sp1 and inhibits its transactivation of the epidermal growth factor receptor promoter.

S Vallian, K V Chin, K S Chang

Open access · greenAbstract read
In one paragraph

Article in Molecular and cellular biology, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
4.0field-weighted citation impact, top 5% 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

45 citing papers in PubMed, 123 citations in OpenAlex.

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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

3 authors at 2 institutions in 1 country.

S VallianDivision of Laboratory Medicine, The University of Texas, Anderson Cancer Center, Houston, Texas 77030, USA.
K V Chin
K S Chang
The University of Texas MD Anderson Cancer Center · USRutgers, The State University of New Jersey · US

Funding

MOLECULAR PATHOLOGY OF ACUTE PROMYELOCYTIC LEUKEMIAR01CA055577 · NCI · UNIVERSITY OF TX MD ANDERSON CAN CTR · PI CHANG, KUN-SANG · 1992 to 2012
$2.5M
NCI NIH HHS CA-55577NCI NIH HHS R01 CA055577
6 · The paper itself

Abstract

The promyelocytic leukemia protein (PML) is a nuclear phosphoprotein with growth- and transformation-suppressing ability. Having previously shown it to be a transcriptional repressor of the epidermal growth factor receptor (EGFR) gene promoter, we have now shown that PML's repression of EGFR transcription is caused by inhibition of EGFR's Sp1-dependent activity. On functional analysis, the repressive effect of PML was mapped to a 150-bp element (the sequences between -150 and -16, relative to the ATG initiation site) of the promoter. Transient transfection assays with Sp1-negative Drosophila melanogaster SL2 cells showed that the transcription of this region was regulated by Sp1 and that the Sp1-dependent activity of the promoter was suppressed by PML in a dose-dependent manner. Coimmunoprecipitation and mammalian two-hybrid assays demonstrated that PML and Sp1 were associated in vivo. In vitro binding by means of the glutathione S-transferase (GST) pull-down assay, using the full-length and truncated GST-Sp1 proteins and in vitro-translated PML, showed that PML and Sp1 directly interacted and that the C-terminal (DNA-binding) region of Sp1 and the coiled-coil (dimerization) domain of PML were essential for this interaction. Analysis of the effects of PML on Sp1 DNA binding by electrophoretic mobility shift assay (EMSA) showed that PML could specifically disrupt the binding of Sp1 to DNA. Furthermore, cotransfection of PML specifically repressed Sp1, but not the E2F1-mediated activity of the dihydrofolate reductase promoter. Together, these data suggest that the association of PML and Sp1 represents a novel mechanism for negative regulation of EGFR and other Sp1 target promoters.

Indexed as

Binding SitesDNA-Binding ProteinsErbB ReceptorsGene Expression RegulationHumansNeoplasm ProteinsNuclear ProteinsPromoter Regions, GeneticPromyelocytic Leukemia ProteinProtein BindingRepressor ProteinsSequence DeletionSp1 Transcription FactorTranscriptional ActivationTranscription FactorsTranscription, GeneticDNA-Binding ProteinsErbB ReceptorsNeoplasm ProteinsNuclear ProteinsPML protein, humanPromyelocytic Leukemia ProteinRepressor ProteinsSp1 Transcription FactorTranscription FactorsTumor Suppressor Proteins

Identifiers

PMID9819401
PMCPMC109296
OpenAlexW2104187492

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.