Evidence map›Paper›PMID 28009843›Full record

ArticleMolecules (Basel, Switzerland)2016

Cryptolepine, a Plant Alkaloid, Inhibits the Growth of Non-Melanoma Skin Cancer Cells through Inhibition of Topoisomerase and Induction of DNA Damage.

Harish C Pal, Santosh K Katiyar

Open access · goldAbstract read
In one paragraph

Article in Molecules (Basel, Switzerland), 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
1.7field-weighted citation impact, top 15% 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

24 citing papers in PubMed, 1 synthesis or guideline pooled it, 57 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Cancer management and research · 2026
    Article
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  5. Article
  6. Review
  7. Review
  8. Role of Phytoconstituents in Cancer Treatment: A Review.Recent advances in food, nutrition & agriculture · 2024
    Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Review
  17. Article
  18. Article
  19. Indole: The After Next Scaffold of Antiplasmodial Agents?Drug design, development and therapy · 2020
    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

2 authors at 1 institution in 1 country.

Harish C PalDepartment of Dermatology, University of Alabama at Birmingham, Birmingham, AL 35294, USA. hcpal@uab.edu.
Santosh K KatiyarDepartment of Dermatology, University of Alabama at Birmingham, Birmingham, AL 35294, USA. skatiyar@uab.edu.
University of Alabama at Birmingham · US

Funding

BLRD VA I01 BX001410
6 · The paper itself

Abstract

Topoisomerases have been shown to have roles in cancer progression. Here, we have examined the effect of cryptolepine, a plant alkaloid, on the growth of human non-melanoma skin cancer cells (NMSCC) and underlying mechanism of action. For this purpose SCC-13 and A431 cell lines were used as an in vitro model. Our study reveals that SCC-13 and A431 cells express higher levels as well as activity of topoisomerase (Topo I and Topo II) compared with normal human epidermal keratinocytes. Treatment of NMSCC with cryptolepine (2.5, 5.0 and 7.5 µM) for 24 h resulted in marked decrease in topoisomerase activity, which was associated with substantial DNA damage as detected by the comet assay. Cryptolepine induced DNA damage resulted in: (i) an increase in the phosphorylation of ATM/ATR, BRCA1, Chk1/Chk2 and γH2AX; (ii) activation of p53 signaling cascade, including enhanced protein expressions of p16 and p21; (iii) downregulation of cyclin-dependent kinases, cyclin D1, cyclin A, cyclin E and proteins involved in cell division (e.g., Cdc25a and Cdc25b) leading to cell cycle arrest at S-phase; and (iv) mitochondrial membrane potential was disrupted and cytochrome c released. These changes in NMSCC by cryptolepine resulted in significant reduction in cell viability, colony formation and increase in apoptotic cell death.

Indexed as

AlkaloidsAntineoplastic Agents, PhytogenicApoptosisBRCA1 ProteinCell LineCell Line, TumorCheckpoint Kinase 1Checkpoint Kinase 2Comet AssayCyclin-Dependent Kinase Inhibitor p16Cyclin-Dependent Kinase Inhibitor p21DNA FragmentationDNA Topoisomerases, Type IDNA Topoisomerases, Type IIGene Expression Regulation, NeoplasticHistonesAlkaloidsAntineoplastic Agents, PhytogenicATMIN protein, humanBRCA1 ProteinBRCA1 protein, humanCDKN2A protein, humanCheckpoint Kinase 1Checkpoint Kinase 2CHEK1 protein, humanCHEK2 protein, humancryptolepineCyclin-Dependent Kinase Inhibitor p16Cyclin-Dependent Kinase Inhibitor p21DNA Topoisomerases, Type IDNA Topoisomerases, Type IIH2AX protein, humanHistonesIndole AlkaloidsQuinolinesTopoisomerase InhibitorsTranscription FactorsTumor Suppressor Protein p53apoptosiscell cyclecryptolepineDNA damageskin cancertopoisomerase

Identifiers

PMID28009843
PMCPMC6273109
OpenAlexW2562289765

What OpenQuestion holds

Textmetadata
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.