Evidence map›Paper›PMID 27036868›Full record

ArticleAmerican journal of physiology. Lung cellular and molecular physiology2016

Hsp90 inhibition suppresses NF-κB transcriptional activation via Sirt-2 in human lung microvascular endothelial cells.

Gagan S Thangjam, Charalampos Birmpas, Nektarios Barabutis, Betsy W Gregory, Mary Ann Clemens, Joseph R Newton, David Fulton, John D Catravas

Abstract read
In one paragraph

Article in American journal of physiology. Lung cellular and molecular physiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing 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

24 citing papers in PubMed.

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  13. Review
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  19. Article
  20. P53 deficiency potentiates LPS-Induced acute lung injuryCurrent research in physiology · 2020
    Article
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

8 authors.

Gagan S ThangjamFrank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, Virginia;
Charalampos BirmpasFrank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, Virginia;
Nektarios BarabutisFrank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, Virginia;
Betsy W GregoryFrank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, Virginia;
Mary Ann ClemensDepartment of Pathology and Anatomy, Eastern Virginia Medical School, Norfolk, Virginia;
Joseph R NewtonDepartment of Surgery, Eastern Virginia Medical School, Norfolk, Virginia;
David FultonVascular Biology Center, Augusta University, Augusta, Georgia; and.
John D CatravasFrank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, Virginia; School of Medical Diagnostic and Translational Sciences, College of Health Sciences, Old Dominion University, Norfolk, Virginia jcatrava@odu.edu.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The ability of anti-heat shock protein 90 (Hsp90) drugs to attenuate NF-κB-mediated transcription is the major basis for their anti-inflammatory properties. While the molecular mechanisms underlying this effect are not clear, they appear to be distinct in human endothelial cells. We now show for the first time that type 2 sirtuin (Sirt-2) histone deacetylase binds human NF-κB target gene promoter and prevents the recruitment of NF-κB proteins and subsequent assembly of RNA polymerase II complex in human lung microvascular endothelial cells. Hsp90 inhibitors stabilize the Sirt-2/promoter interaction and impose a "transcriptional block," which is reversed by either inhibition or downregulation of Sirt-2 protein expression. Furthermore, this process is independent of NF-κB (p65) Lysine 310 deacetylation, suggesting that it is distinct from known Sirt-2-dependent mechanisms. We demonstrate that Sirt-2 is recruited to NF-κB target gene promoter via interaction with core histones. Upon inflammatory challenge, chromatin remodeling and core histone H3 displacement from the promoter region removes Sirt-2 and allows NF-κB/coactivator recruitment essential for RNA Pol II-dependent mRNA induction. This novel mechanism may have important implications in pulmonary inflammation.

Indexed as

Transcriptional ActivationAcetylationAnimalsBenzoquinonesCells, CulturedEndothelial CellsEndothelium, VascularHSP90 Heat-Shock ProteinsHumansInterleukin-8Lactams, MacrocyclicLipopolysaccharidesLungMaleMice, Inbred C57BLMicrovesselsBenzoquinonesCXCL8 protein, humanHSP90 Heat-Shock ProteinsInterleukin-8Lactams, MacrocyclicLipopolysaccharidesRELA protein, humanSIRT2 protein, humanSirtuin 2tanespimycinTranscription Factor RelAhistone h3Hsp90human lung endothelial cellsNF-κBSirt-2

Identifiers

PMID27036868
PMCPMC4896096

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.