Evidence map›Paper›PMID 22965833›Full record

ArticleBreast cancer research and treatment2012

Withaferin A causes activation of Notch2 and Notch4 in human breast cancer cells.

Joomin Lee, Anuradha Sehrawat, Shivendra V Singh

Abstract read
In one paragraph

Article in Breast cancer research and treatment, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing 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

39 citing papers in PubMed.

  1. Review
  2. Review
  3. SF1, a Standardised Fraction fromThe Malaysian journal of medical sciences : MJMS · 2025
    Article
  4. Review
  5. Review
  6. Review
  7. Review
  8. Review
  9. Modulation of Notch Signaling Pathway by Bioactive Dietary Agents.International journal of molecular sciences · 2022
    Review
  10. Pharmaceutics · 2022
    Review
  11. Article
  12. Review
  13. Critical review of theBulletin of the National Research Centre · 2021
    Review
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  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

3 authors.

Joomin LeeDepartment of Pharmacology & Chemical Biology, University of Pittsburgh Cancer Institute, University of Pittsburgh School of Medicine, 2.32A Hillman Cancer Center Research Pavilion, 5117 Centre Avenue, Pittsburgh, PA 15213, USA.
Anuradha Sehrawat
Shivendra V Singh

Funding

Breast Cancer Prevention by Ayurvedic Medicine ConstituentsR01CA142604 · NCI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI SINGH, SHIVENDRA · 2010 to 2019
$3.2M
NCI NIH HHS R01 CA142604NCI NIH HHS R01CA142604
6 · The paper itself

Abstract

Ayurvedic medicine plants continue to draw attention for the discovery of novel anticancer agents. Withaferin A (WA) is one such small-molecule constituent of the ayurvedic medicine plant Withania somnifera with efficacy against cultured and xenografted human breast cancer cells. However, the mechanism underlying anticancer effect of WA is not fully understood. This study was undertaken to determine the role of Notch signaling in anticancer effects of WA using human breast cancer cells as a model. Notably, Notch signaling is often hyperactive in human breast cancers. Exposure of MDA-MB-231 and MCF-7 human breast cancer cells to pharmacological concentrations of WA resulted in cleavage (activation) of Notch2 as well as Notch4, which was accompanied by transcriptional activation of Notch as evidenced by RBP-Jk, HES-1A/B, and HEY-1 luciferase reporter assays. On the other hand, WA treatment caused a decrease in levels of both transmembrane and cleaved Notch1. The WA-mediated activation of Notch was associated with induction of γ-secretase complex components presenilin1 and/or nicastrin. Inhibition of MDA-MB-231 and MDA-MB-468 cell migration resulting from WA exposure was significantly augmented by knockdown of Notch2 as well as Notch4 protein. Activation of Notch2 was not observed in cells treated with withanone or withanolide A, which are structural analogs of WA. The results of this study indicate that WA treatment activates Notch2 and Notch4, which impede inhibitory effect of WA on breast cancer cell migration.

Indexed as

Antineoplastic AgentsWithanolidesApoptosisBreast NeoplasmsCell MovementFemaleGene Expression Regulation, NeoplasticHumansMCF-7 CellsProto-Oncogene ProteinsReceptor, Notch2Receptor, Notch4Receptors, NotchWithaniaAntineoplastic AgentsNOTCH2 protein, humanNOTCH4 protein, humanProto-Oncogene ProteinsReceptor, Notch2Receptor, Notch4Receptors, Notchwithaferin AWithanolides

Identifiers

PMID22965833
PMCPMC3474857

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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.