Evidence map›Paper›PMID 24310212›Full record

ArticlePlanta medica2014

Screening of natural compounds as activators of the keap1-nrf2 pathway.

Kai C Wu, Peter R McDonald, Jie Liu, Curtis D Klaassen

Open access · greenAbstract read
In one paragraph

Article in Planta medica, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed
1.6field-weighted citation impact, top 17% 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

50 citing papers in PubMed, 89 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

4 authors at 2 institutions in 1 country.

Kai C WuDepartment of Pharmacology, Toxicology, and Therapeutics, University of Kansas Medical Center, Kansas City, KS, USA.
Peter R McDonaldHigh-Throughput Screening Core Facility, Structural Biology Center, University of Kansas, Lawrence, KS, USA.
Jie LiuDepartment of Internal Medicine, University of Kansas Medical Center, Kansas City, KS, USA.
Curtis D KlaassenDepartment of Internal Medicine, University of Kansas Medical Center, Kansas City, KS, USA.
University of Kansas Medical Center · USHigh Throughput Biology (United States) · US

Funding

Regulation of Hepatic Uptake of Endogenous Signaling Molecules and XenobioticsR01ES009649 · NIEHS · UNIVERSITY OF KANSAS MEDICAL CENTER · PI CSANAKY, IVAN · 2000 to 2014
$4.0M
Nrf2 as a Master Regulator in Liver Disease Prevention and TherapyR01DK081461 · NIDDK · UNIVERSITY OF KANSAS MEDICAL CENTER · PI KLAASSEN, CURTIS DEAN · 2009 to 2012
$1.3M
NIDDK NIH HHS DK-081461NIDDK NIH HHS R01 DK081461NIEHS NIH HHS ES-009649NIEHS NIH HHS R01 ES009649
6 · The paper itself

Abstract

Nuclear factor erythroid 2-related factor 2 is a master regulator that promotes transcription of cytoprotective genes in response to oxidative/electrophilic stress. A large number of natural dietary compounds are thought to protect against oxidative stress, and a few have been reported to induce genes involved in antioxidant defense through activating nuclear factor erythroid 2-related factor 2. Therefore, a library of 54 natural compounds were collected to determine whether they are nuclear factor erythroid 2-related factor 2 activators and to compare their efficacy and potency to activate nuclear factor erythroid 2-related factor 2. The assay utilized AREc32 cells that contain a luciferase gene under the control of antioxidant response element promoters. Each natural compound was tested at 13 concentrations between 0.02 and 30 µM. Known nuclear factor erythroid 2-related factor 2 activators tert-butylhydroquinone and 2-cyano-3,12-dioxooleana-1,9-diene-28-imidazolide were used as positive controls in parallel with the natural compounds. Among the 54 tested natural compounds, andrographolide had the highest efficacy, followed by trans-chalcone, sulforaphane, curcumin, flavone, kahweol, and carnosol, all of which had better efficacy than tert-butylhydroquinone. Among the compounds tested, 2-cyano-3,12-dioxooleana-1,9-diene-28-imidazolide was the most potent, having an EC50 of 0.41 µM. Seven of the natural compounds, namely andrographolide, trans-chalcone, sulforaphane, curcumin, flavone, kahweol, and cafestol had lower EC50 values than tert-butylhydroquinone but higher than 2-cyano-3,12-dioxooleana-1,9-diene-28-imidazolide. The present study provides insights into which natural compounds activate the Keap1-nuclear factor erythroid 2-related factor 2 pathway and thus might be useful for detoxifying oxidative/electrophilic stress.

Indexed as

Antioxidant Response ElementsAntioxidantsCell LineDiterpenesDose-Response Relationship, DrugDrug Evaluation, PreclinicalHumansHydroquinonesIntracellular Signaling Peptides and ProteinsKelch-Like ECH-Associated Protein 1Metabolic Networks and PathwaysNF-E2-Related Factor 2Oxidative StressSmall Molecule Libraries2-tert-butylhydroquinoneandrographolideAntioxidantsDiterpenesHydroquinonesIntracellular Signaling Peptides and ProteinsKEAP1 protein, humanKelch-Like ECH-Associated Protein 1Nfe2l2 protein, mouseNF-E2-Related Factor 2Small Molecule Libraries

Identifiers

PMID24310212
PMCPMC5505507
OpenAlexW2016109284

What OpenQuestion holds

Textmetadata
LicenceTDM
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.