Evidence map›Paper›PMID 23194063›Full record

ArticleBMC cancer2012

Curcumin and synthetic analogs induce reactive oxygen species and decreases specificity protein (Sp) transcription factors by targeting microRNAs.

Shruti U Gandhy, Kyounghyun Kim, Lesley Larsen, Rhonda J Rosengren, Stephen Safe

Open access · goldAbstract read
In one paragraph

Article in BMC cancer, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 85 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
85citing papers in PubMed, 1 pooled it
4.4field-weighted citation impact, top 4% 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

85 citing papers in PubMed, 1 synthesis or guideline pooled it, 166 citations in OpenAlex.

  1. Pooled it
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  13. Review
  14. Specificity Proteins (Sp) and Cancer.International journal of molecular sciences · 2023
    Review
  15. Article
  16. Recent Advances in Natural Polyphenol Research.Molecules (Basel, Switzerland) · 2022
    Review
  17. Review
  18. Review
  19. Review
  20. Review

25 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

5 authors at 3 institutions in 2 countries.

Shruti U GandhyCollege of Medicine, Texas A&M Health Science Center, Houston, TX 77030, USA.
Kyounghyun Kim
Lesley Larsen
Rhonda J Rosengren
Stephen Safe
Texas A&M Health Science Center · USUniversity of Otago · NZTexas A&M University · US

Funding

MicroRNAs as Targets for Colon Cancer ChemotherapyR01CA136571 · NCI · TEXAS A&M UNIVERSITY · PI SAFE, STEPHEN H. · 2009 to 2013
$1.2M
NCI NIH HHS R01 CA136571NCI NIH HHS R01-CA136571
6 · The paper itself

Abstract

backgroundCurcumin inhibits growth of several cancer cell lines, and studies in this laboratory in bladder and pancreatic cancer cells show that curcumin downregulates specificity protein (Sp) transcription factors Sp1, Sp3 and Sp4 and pro-oncogenic Sp-regulated genes. In this study, we investigated the anticancer activity of curcumin and several synthetic cyclohexanone and piperidine analogs in colon cancer cells.

methodsThe effects of curcumin and synthetic analogs on colon cancer cell proliferation and apoptosis were determined using standardized assays. The changes in Sp proteins and Sp-regulated gene products were analysed by western blots, and real time PCR was used to determine microRNA-27a (miR-27a), miR-20a, miR-17-5p and ZBTB10 and ZBTB4 mRNA expression.

resultsThe IC50 (half-maximal) values for growth inhibition (24 hr) of colon cancer cells by curcumin and synthetic cyclohexanone and piperidine analogs of curcumin varied from 10 μM for curcumin to 0.7 μM for the most active synthetic piperidine analog RL197, which was used along with curcumin as model agents in this study. Curcumin and RL197 inhibited RKO and SW480 colon cancer cell growth and induced apoptosis, and this was accompanied by downregulation of specificity protein (Sp) transcription factors Sp1, Sp3 and Sp4 and Sp-regulated genes including the epidermal growth factor receptor (EGFR), hepatocyte growth factor receptor (c-MET), survivin, bcl-2, cyclin D1 and NFκB (p65 and p50). Curcumin and RL197 also induced reactive oxygen species (ROS), and cotreatment with the antioxidant glutathione significantly attenuated curcumin- and RL197-induced growth inhibition and downregulation of Sp1, Sp3, Sp4 and Sp-regulated genes. The mechanism of curcumin-/RL197-induced repression of Sp transcription factors was ROS-dependent and due to induction of the Sp repressors ZBTB10 and ZBTB4 and downregulation of microRNAs (miR)-27a, miR-20a and miR-17-5p that regulate these repressors.

conclusionsThese results identify a new and highly potent curcumin derivative and demonstrate that in cells where curcumin and RL197 induce ROS, an important underlying mechanism of action involves perturbation of miR-ZBTB10/ZBTB4, resulting in the induction of these repressors which downregulate Sp transcription factors and Sp-regulated genes.

Indexed as

ApoptosisCell Line, TumorCell ProliferationColonic NeoplasmsCurcuminCyclin D1CyclohexanonesDown-RegulationErbB ReceptorsGene Expression Regulation, NeoplasticHumansMicroRNAsNF-kappa BPiperidinesProto-Oncogene Proteins c-bcl-2Proto-Oncogene Proteins c-metCurcuminCyclin D1cyclohexanoneCyclohexanonesEGFR protein, humanErbB ReceptorsMET protein, humanMicroRNAsNF-kappa BpiperidinePiperidinesProto-Oncogene Proteins c-bcl-2Proto-Oncogene Proteins c-metReactive Oxygen SpeciesRepressor ProteinsSp Transcription FactorsZBTB10 protein, humanZBTB4 protein, human

Identifiers

PMID23194063
PMCPMC3522018
OpenAlexW2078950380

What OpenQuestion holds

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LicenceCC BY
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.