Evidence map›Paper›PMID 27803164›Full record

ArticleThe Journal of biological chemistry2016

Helenalin Acetate, a Natural Sesquiterpene Lactone with Anti-inflammatory and Anti-cancer Activity, Disrupts the Cooperation of CCAAT Box/Enhancer-binding Protein β (C/EBPβ) and Co-activator p300.

Anke Jakobs, Simone Steinmann, Sarah Marie Henrich, Thomas J Schmidt, Karl-Heinz Klempnauer

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 1 pooled it
1.6field-weighted citation impact, top 18% 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

33 citing papers in PubMed, 1 synthesis or guideline pooled it, 42 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Review
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  6. Review
  7. Article
  8. Article
  9. Article
  10. MYB as a Critical Transcription Factor and Potential Therapeutic Target in AML.Advances in experimental medicine and biology · 2024
    Review
  11. Article
  12. Plants (Basel, Switzerland) · 2023
    Review
  13. Article
  14. Article
  15. Article
  16. Review
  17. C/EBPβ enhances immunosuppression activity of myeloid-derived suppressor cells by a P300-mediated acetylation modification.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2022
    Article
  18. Article
  19. Review
  20. Review
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

5 authors at 2 institutions in 2 countries.

Anke JakobsFrom the Institute for Biochemistry and.
Simone SteinmannFrom the Institute for Biochemistry and.
Sarah Marie HenrichFrom the Institute for Biochemistry and.
Thomas J Schmidtthe Institute for Pharmaceutical Biology and Phytochemistry, Westfälische Wilhelms-Universität, D-48149 Münster, Germany.
Karl-Heinz KlempnauerFrom the Institute for Biochemistry and klempna@uni-muenster.de.
Institute of Biochemistry · ROUniversity of Münster · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Recent work has demonstrated pro-oncogenic functions of the transcription factor CCAAT box/enhancer-binding protein β (C/EBPβ) in various tumors, implicating C/EBPβ as an interesting target for the development of small-molecule inhibitors. We have previously discovered that the sesquiterpene lactone helenalin acetate, a natural compound known to inhibit NF-κB, is a potent C/EBPβ inhibitor. We have now examined the inhibitory mechanism of helenalin acetate in more detail. We demonstrate that helenalin acetate is a significantly more potent inhibitor of C/EBPβ than of NF-κB. Our work shows that helenalin acetate inhibits C/EBPβ by binding to the N-terminal part of C/EBPβ, thereby disrupting the cooperation of C/EBPβ with the co-activator p300. C/EBPβ is expressed in several isoforms from alternative translational start codons. We have previously demonstrated that helenalin acetate selectively inhibits only the full-length (liver-enriched activating protein* (LAP*)) isoform but not the slightly shorter (LAP) isoform. Consistent with this, helenalin acetate binds to the LAP* but not to the LAP isoform, explaining why its inhibitory activity is selective for LAP*. Although helenalin acetate contains reactive groups that are able to interact covalently with cysteine residues, as exemplified by its effect on NF-κB, the inhibition of C/EBPβ by helenalin acetate is not due to irreversible reaction with cysteine residues of C/EBPβ. In summary, helenalin acetate is the first highly active small-molecule C/EBPβ inhibitor that inhibits C/EBPβ by a direct binding mechanism. Its selectivity for the LAP* isoform also makes helenalin acetate an interesting tool to dissect the functions of the LAP* and LAP isoforms.

Indexed as

3T3-L1 CellsAnimalsAnti-Inflammatory Agents, Non-SteroidalAntineoplastic Agents, PhytogenicCCAAT-Enhancer-Binding Protein-betaMiceNF-kappa Bp300-CBP Transcription FactorsProtein IsoformsSesquiterpenesSesquiterpenes, GuaianeAnti-Inflammatory Agents, Non-SteroidalAntineoplastic Agents, PhytogenicCCAAT-Enhancer-Binding Protein-betaCebpb protein, mousehelenalinNF-kappa Bp300-CBP Transcription FactorsProtein IsoformsSesquiterpenesSesquiterpenes, GuaianeadipocyteCCAAT-enhancer-binding protein (C/EBP)E1A-binding protein p300 (P300)helenalin acetateinhibitorNF-kappa B (NF-KB)small-molecule

Identifiers

PMID27803164
PMCPMC5207079
OpenAlexW2546961906

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.