Evidence map›Paper›PMID 17698632›Full record

ArticleBlood2007

Homocysteine inhibits endothelial cell growth via DNA hypomethylation of the cyclin A gene.

M D S Jamaluddin, Irene Chen, Fan Yang, Xiaohua Jiang, Michael Jan, Xiaoming Liu, Andrew I Schafer, William Durante, Xiaofeng Yang, Hong Wang

Open access · greenAbstract read
In one paragraph

Article in Blood, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 76 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
76citing papers in PubMed, 1 pooled it
4.0field-weighted citation impact, top 6% 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

76 citing papers in PubMed, 1 synthesis or guideline pooled it, 139 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Review
  4. Article
  5. Review
  6. Review
  7. Review
  8. Article
  9. Review
  10. Cigarette Smoke Modulates Inflammation and ImmunityAntioxidants & redox signaling · 2023
    Review
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16 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 at 3 institutions in 1 country.

M D S JamaluddinDepartment of Pharmacology, Temple University School of Medicine, Philadelphia, PA 19140, USA.
Irene Chen
Fan Yang
Xiaohua Jiang
Michael Jan
Xiaoming Liu
Andrew I Schafer
William Durante
Xiaofeng Yang
Hong Wang
Temple University · USUniversity of Missouri · USCornell University · US

Funding

Atherogenic mechanisms with homocysteineR01HL077288 · NHLBI · TEMPLE UNIV OF THE COMMONWEALTH · PI WANG, HONG · 2004 to 2014
$3.8M
Inhibition of Endothelial Growth by HomocysteineR01HL067033 · NHLBI · TEMPLE UNIV OF THE COMMONWEALTH · PI WANG, HONG · 2002 to 2011
$3.0M
REGULATION OF PLATELET/ENDOTHELIAL INTERACTIONSR01HL036045 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI SCHAFER, ANDREW I · 1985 to 2006
$2.1M
Role of HHcy in diabetic vascular diseaseR01HL082774 · NHLBI · TEMPLE UNIV OF THE COMMONWEALTH · PI WANG, HONG · 2006 to 2010
$1.8M
ARGINASE AND ARTERIAL INJURYR01HL074966 · NHLBI · UNIVERSITY OF MISSOURI-COLUMBIA · PI DURANTE, WILLIAM · 2005 to 2009
$1.6M
NHLBI NIH HHS HL36045NHLBI NIH HHS HL67033NHLBI NIH HHS HL74966NHLBI NIH HHS HL77288NHLBI NIH HHS HL82774NHLBI NIH HHS R01 HL036045NHLBI NIH HHS R01 HL067033NHLBI NIH HHS R01 HL074966NHLBI NIH HHS R01 HL077288NHLBI NIH HHS R01 HL082774
6 · The paper itself

Abstract

We reported previously that homocysteine (Hcy) inhibits endothelial cell (EC) growth by transcriptional inhibition of the cyclin A gene via a hypomethylation-related mechanism. In this study, we examined the effect of Hcy on epigenetic modification of the cyclin A gene and its biologic role in human ECs. Cyclin A mRNA levels were significantly suppressed by Hcy and a DNA methyltransferase inhibitor. The cyclin A promoter contains a CpG island spanning a 477-bp region (-277/200). Bisulfite sequencing followed by polymerase chain reaction (PCR) amplification of the cyclin A promoter (-267/37) showed that Hcy eliminated methylation at 2 CpG sites in the cyclin A promoter, one of which is located on the cycle-dependent element (CDE). Mutation of CG sequence on the CDE leads to a 6-fold increase in promoter activity. Hcy inhibited DNA methyltransferase 1 (DNMT1) activity by 30%, and reduced the binding of methyl CpG binding protein 2 (MeCP2) and increased the bindings of acetylated histone H3 and H4 in the cyclin A promoter. Finally, adenovirus-transduced DNMT1 gene expression reversed the inhibitory effect of Hcy on cyclin A expression and EC growth inhibition. In conclusion, Hcy inhibits cyclin A transcription and cell growth by inhibiting DNA methylation through suppression of DNMT1 in ECs.

Indexed as

Cell ProliferationAzacitidineBase SequenceButyratesCells, CulturedCpG IslandsCyclin ADNADNA (Cytosine-5-)-Methyltransferase 1DNA (Cytosine-5-)-MethyltransferasesDNA MethylationEndothelial CellsGene Expression RegulationHomocysteineHumansHydroxamic AcidsAzacitidineButyratesCyclin ADNADNA (Cytosine-5-)-Methyltransferase 1DNA (Cytosine-5-)-MethyltransferasesDNMT1 protein, humanHomocysteineHydroxamic Acidstrichostatin A

Identifiers

PMID17698632
PMCPMC2077313
OpenAlexW1987095957

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.