Evidence map›Paper›PMID 10970805›Full record

ArticleThe Biochemical journal2000

Cytosine methylation of an Sp1 site contributes to organ-specific and cell-specific regulation of expression of the lung epithelial gene t1alpha.

Y X Cao, J C Jean, M C Williams

Open access · greenAbstract read
In one paragraph

Article in The Biochemical journal, 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
1.3field-weighted citation impact, top 20% 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

19 citing papers in PubMed, 46 citations in OpenAlex.

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  14. Epigenetics, oxidative stress, and Alzheimer disease.Free radical biology & medicine · 2009
    Review
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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 1 institution in 1 country.

Y X CaoPulmonary Center, Department of Medicine, Boston University School of Medicine, 80 East Concord Street, Boston, MA 02118, USA.
J C Jean
M C Williams
Boston University · US

Funding

T1alpha in type I cell formation, regulation &functionP01HL047049 · NHLBI · BOSTON UNIVERSITY MEDICAL CAMPUS · PI LU, JINING · 1992 to 2012
$27.6M
NHLBI NIH HHS HL47049
6 · The paper itself

Abstract

Several recent observations have suggested that cytosine methylation has a role in the in vivo transcriptional regulation of cell-specific genes in normal cells. We hypothesized that methylation regulates T1alpha, a gene expressed primarily in lung in adult rodents. In fetuses T1alpha is expressed in several organs, including the entire nervous system, but during development its expression is progressively restricted to lung alveolar type I epithelial cells, some osteoblasts and choroid plexus. Here we report that T1alpha is methylated at a key Sp1 site in the proximal promoter in cells and organs, including brain, where no gene expression is detectable. Conversely, in T1alpha-expressing cells, these sites are not methylated. In embryonic brain T1alpha is unmethylated and expressed; in adult brain the gene is methylated and not expressed. In lung epithelial cell lines, methylation of the T1alpha promoter in vitro decreases expression by approx. 50% (the maximum suppression being 100%). Analysis of mutated promoter constructs indicates that a single Sp1 site in the proximal promoter provides all or most of the methylation-sensitive gene silencing. We conclude that, in addition to regulation by transcription factors, cytosine methylation has a role in the complex expression patterns of this gene in intact animals and primary cells.

Indexed as

DNA MethylationGene Expression RegulationAnimalsAzacitidineBase SequenceBlotting, NorthernCell LineCytosineDNA PrimersEpithelial CellsGenes, ReporterLungMembrane GlycoproteinsMembrane ProteinsPodoplaninPromoter Regions, GeneticAzacitidineCytosineDNA PrimersMembrane GlycoproteinsMembrane ProteinsPdpn protein, ratPodoplaninSp1 Transcription Factor

Identifiers

PMID10970805
PMCPMC1221323
OpenAlexW2092952537

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.