Evidence map›Paper›PMID 8070016›Full record

ReviewCancer chemotherapy and pharmacology1994

Yeast Saccharomyces cerevisiae as a model system to study the cytotoxic activity of the antitumor drug camptothecin.

M A Bjornsti, A M Knab, P Benedetti

Open access · bronzeAbstract readReview
PubMed Publisher
In one paragraph

Review in Cancer chemotherapy and pharmacology, 1994. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
1.1field-weighted citation impact, top 23% 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

5 citing papers in PubMed, 32 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. SCT1 mutants suppress the camptothecin sensitivity of yeast cells expressing wild-type DNA topoisomerase I.Proceedings of the National Academy of Sciences of the United States of America · 1995
    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 at 2 institutions in 2 countries.

M A BjornstiDepartment of Biochemistry and Molecular Biology, Thomas Jefferson Univeristy, Philadelphia, PA 19107.
A M Knab
P Benedetti
Thomas Jefferson University · USInstitute of Cell Biology and Neurobiology · IT

Funding

NIGMS NIH HHS GM 44810
6 · The paper itself

Abstract

Eukaryotic DNA topoisomerase I catalyzes the relaxation of positively and negatively supercoiled DNA and plays a critical role in processes involving DNA, such as DNA replication, transcription and recombination. The enzyme is encoded by the TOP1 gene and is highly conserved in its amino acid sequence and sensitivity to the anti-neoplatic agent camptothecin. This plant alkaloid specifically targets DNA topoisomerase I by reversibly stabilizing the covalent enzyme-DNA intermediate. Presumably, it is the interaction of these drug-stabilized adducts with other cellular components, such as replication forks, that actually produces the DNA lesions leading to cell death. A conservation of the mechanism(s) of camptothecin-induced cell killing is also implicit in studies of the yeast Saccharomyces cerevisiae, where the camptothecin sensitivity of delta TOP1 yeast cells can be restored by plasmids expressing either yeast or human TOP1 sequences. This genetically tractable system is currently being exploited to describe the specific molecular interactions required for the cytotoxic action of camptothecin. The results of mutational analyses of yeast and human DNA topoisomerase I are presented, as well as a genetic screen designed to identify genes, other than TOP1, that are required for the cytotoxic activity of camptothecin.

Indexed as

Topoisomerase I InhibitorsAmino Acid SequenceCamptothecinConserved SequenceDNA Topoisomerases, Type IGenes, FungalHumansMolecular Sequence DataSaccharomyces cerevisiaeCamptothecinDNA Topoisomerases, Type ITopoisomerase I Inhibitors

Identifiers

PMID8070016
OpenAlexW2061300792

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.