Evidence map›Paper›PMID 20840540›Full record

ArticleBritish journal of pharmacology2011

Protocatechuic acid inhibits cancer cell metastasis involving the down-regulation of Ras/Akt/NF-κB pathway and MMP-2 production by targeting RhoB activation.

Hui-Hsuan Lin, Jing-Hsien Chen, Fen-Pi Chou, Chau-Jong Wang

Open access · bronzeAbstract read
In one paragraph

Article in British journal of pharmacology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 53 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
53citing papers in PubMed, 1 pooled it
2.0field-weighted citation impact, top 16% 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

53 citing papers in PubMed, 1 synthesis or guideline pooled it, 120 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. The Role of miRNA-21 in the Metastasis of Hepatocellular Carcinoma as a Therapeutic Target.International journal of hematology-oncology and stem cell research · 2026
    Review
  9. Therapeutic Potential of Plant Phenolic Acids Combating Cancer Drug Resistance.Recent advances in food, nutrition & agriculture · 2026
    Review
  10. Integrative Evaluation ofMolecules (Basel, Switzerland) · 2025
    Article
  11. Review
  12. Review
  13. Anticancer Activity of Ethanolic Extract ofInternational journal of molecular sciences · 2025
    Article
  14. Article
  15. Article
  16. Enhancement Strategy for Protocatechuic Acid Production UsingInternational journal of molecular sciences · 2025
    Article
  17. Review
  18. Review
  19. Review
  20. 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

4 authors at 3 institutions in 1 country.

Hui-Hsuan LinSchool of Medical Laboratory and Biotechnology, Chung Shan Medical University, Taichung, Taiwan.
Jing-Hsien Chen
Fen-Pi Chou
Chau-Jong Wang
Chung Shan Medical University · TWChung Hwa University of Medical Technology · TWChung Shan Medical University Hospital · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeProtocatechuic acid (PCA) is plentiful in edible fruits and vegetables and is thus one anti-oxidative component of normal human diets. However, the molecular mechanisms involved in the chemopreventive activity of PCA are poorly understood. Here, we investigated the mechanism(s) underlying the anti-metastatic potential of PCA. EXPERIMENTAL APPROACH: We used AGS cells in a wound healing model and Boyden chamber assays in vitro and injection of B16/F10 melanoma cells in mice (metastasis model in vivo) to analyse the effect of PCA on cancer cell invasion and metastasis. The activities and expression of molecular proteins were measured by zymographic assay, real-time RT-PCR and Western blotting. KEY

resultsPCA inhibited cell migration and invasion at non-cytotoxic concentrations. Decreased expression of matrix metalloproteinase (MMP)-2 and a coincident increase in tissue inhibitor of MMP followed treatment with PCA. The PCA-inhibited MMP-2 activity and expression was accompanied by inactivation of NF-κB. All these effects of PCA could be mediated via the RhoB/ protein kinase Cε (PKCε) and Ras/Akt cascade pathways, as demonstrated by inhibition of PKCε and transfection of PKCε siRNA and ras overexpression vector. Finally, PCA inhibited metastasis of B16/F10 melanoma cells to the liver in mice. CONCLUSION AND IMPLICATIONS: Our data imply that PCA down-regulated the Ras/Akt/NF-κB pathway by targeting RhoB activation, which in turn led to a reduction of MMP-mediated cellular events in cancer cells and provides a new mechanism for the anti-cancer activity of PCA.

Indexed as

AnimalsAnticarcinogenic AgentsBlotting, WesternDown-RegulationElectrophoretic Mobility Shift AssayHydroxybenzoatesImmunoprecipitationMatrix Metalloproteinase 2Melanoma, ExperimentalMiceNeoplasm MetastasisNF-kappa BProto-Oncogene Proteins c-aktras ProteinsReverse Transcriptase Polymerase Chain ReactionrhoB GTP-Binding ProteinAnticarcinogenic AgentsHydroxybenzoatesMatrix Metalloproteinase 2NF-kappa Bprotocatechuic acidProto-Oncogene Proteins c-aktras ProteinsrhoB GTP-Binding Protein

Identifiers

PMID20840540
PMCPMC3012419
OpenAlexW1869064315

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.