Evidence map›Paper›PMID 18342637›Full record

ArticleFree radical biology & medicine2008

Apigenin-induced prostate cancer cell death is initiated by reactive oxygen species and p53 activation.

Sanjeev Shukla, Sanjay Gupta

Open access · greenAbstract read
In one paragraph

Article in Free radical biology & medicine, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed, 1 pooled it
8.5field-weighted citation impact, top 2% 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

60 citing papers in PubMed, 1 synthesis or guideline pooled it, 153 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Targeted elimination of CD44RSC advances · 2026
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  8. The Antioxidant Potential and Anticancer Activity ofAntioxidants (Basel, Switzerland) · 2024
    Article
  9. Review
  10. Review
  11. Review
  12. Phytochemical Constituents and Derivatives ofInternational journal of molecular sciences · 2023
    Review
  13. The mechanism of flavonoids fromFrontiers in pharmacology · 2023
    Article
  14. Review
  15. Review
  16. Review
  17. Article
  18. Review
  19. AnAnalytical cellular pathology (Amsterdam) · 2021
    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

2 authors at 1 institution in 1 country.

Sanjeev ShuklaDepartment of Urology, Case Western Reserve University, Cleveland, OH 44106, USA.
Sanjay Gupta
Case Western Reserve University · US

Funding

TUMOR METABOLISM PROGRAMP30CA043703 · NCI · CASE WESTERN RESERVE UNIVERSITY · PI MARK R CHANCE · 1987 to 2026
$142.3M
Prostate Cancer Chemoprevention by ApigeninR01CA108512 · NCI · CASE WESTERN RESERVE UNIVERSITY · PI GUPTA, SANJAY · 2004 to 2014
$2.4M
Chamomile as Medicine for Prostate cancerR01AT002709 · NCCIH · CASE WESTERN RESERVE UNIVERSITY · PI GUPTA, SANJAY · 2005 to 2009
$1.3M
Prostate Cancer Chemoprevention by ApigeninR03CA094248 · NCI · CASE WESTERN RESERVE UNIVERSITY · PI GUPTA, SANJAY · 2002 to 2003
$153k
Inhibition of Prostate Carcinogenesis by ApigeninR03CA099049 · NCI · CASE WESTERN RESERVE UNIVERSITY · PI GUPTA, SANJAY · 2002 to 2003
$153k
NCCIH NIH HHS R01 AT002709NCI NIH HHS P30 CA043703NCI NIH HHS P30 CA43703NCI NIH HHS R01 CA108512NCI NIH HHS R03 CA094248NCI NIH HHS R03 CA099049
6 · The paper itself

Abstract

Apigenin, a plant flavone, potentially activates wild-type p53 and induces apoptosis in cancer cells. We conducted detailed studies to understand its mechanism of action. Exposure of human prostate cancer 22Rv1 cells, harboring wild-type p53, to growth-suppressive concentrations (10-80 microM) of apigenin resulted in the stabilization of p53 by phosphorylation on critical serine sites, p14ARF-mediated downregulation of MDM2 protein, inhibition of NF-kappaB/p65 transcriptional activity, and induction of p21/WAF-1 in a dose- and time-dependent manner. Apigenin at these doses resulted in ROS generation, which was accompanied by rapid glutathione depletion, disruption of mitochondrial membrane potential, cytosolic release of cytochrome c, and apoptosis. Interestingly, we observed accumulation of a p53 fraction to the mitochondria, which was rapid and occurred between 1 and 3 h after apigenin treatment. All these effects were significantly blocked by pretreatment of cells with the antioxidant N-acetylcysteine, p53 inhibitor pifithrin-alpha, and enzyme catalase. Apigenin-mediated p53 activation and apoptosis were further attenuated by p53 antisense oligonucleotide treatment. Exposure of cells to apigenin led to a decrease in the levels of Bcl-XL and Bcl-2 and increase in Bax, triggering caspase activation. Treatment with the caspase inhibitors Z-VAD-FMK and DEVD-CHO partially rescued these cells from apigenin-induced apoptosis. In vivo, apigenin administration demonstrated p53-mediated induction of apoptosis in 22Rv1 tumors. These results indicate that apigenin-induced apoptosis in 22Rv1 cells is initiated by a ROS-dependent disruption of the mitochondrial membrane potential through transcriptional-dependent and -independent p53 pathways.

Indexed as

AcetylcysteineAntineoplastic Agents, PhytogenicAntioxidantsApigeninApoptosisBenzothiazolesCell DeathCell Line, TumorCyclin-Dependent Kinase Inhibitor p21HumansMaleMembrane Potential, MitochondrialPhosphorylationProstatic NeoplasmsProto-Oncogene Proteins c-mdm2Reactive Oxygen SpeciesAcetylcysteineAntineoplastic Agents, PhytogenicAntioxidantsApigeninBenzothiazolesCDKN1A protein, humanCyclin-Dependent Kinase Inhibitor p21MDM2 protein, humanpifithrinProto-Oncogene Proteins c-mdm2Reactive Oxygen SpeciesTolueneTranscription Factor RelATumor Suppressor Protein p14ARFTumor Suppressor Protein p53

Identifiers

PMID18342637
PMCPMC2538676
OpenAlexW2047166923

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.