Evidence map›Paper›PMID 22404155›Full record

ArticleCancer science2012

Radiosensitization effect of poly(ADP-ribose) polymerase inhibition in cells exposed to low and high liner energy transfer radiation.

Takahisa Hirai, Hidenori Shirai, Hiroaki Fujimori, Ryuichi Okayasu, Keisuke Sasai, Mitsuko Masutani

Open access · bronzeAbstract read
In one paragraph

Article in Cancer science, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed, 2 pooled it
1.7field-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

46 citing papers in PubMed, 2 syntheses or guidelines pooled it, 63 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Review
  5. Review
  6. Article
  7. Article
  8. A perspective on tumor radiation resistance following high-LET radiation treatment.Journal of cancer research and clinical oncology · 2024
    Review
  9. Article
  10. Review
  11. Review
  12. Review
  13. Basic and translational research on carbon-ion radiobiology.American journal of cancer research · 2023
    Review
  14. Review
  15. Radiosensitization to γ-Ray by Functional Inhibition of APOBEC3G.International journal of molecular sciences · 2022
    Article
  16. 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

6 authors at 2 institutions in 1 country.

Takahisa HiraiDivision of Genome Stability Research, National Cancer Center Research Institute, Tokyo, Japan.
Hidenori Shirai
Hiroaki Fujimori
Ryuichi Okayasu
Keisuke Sasai
Mitsuko Masutani
Juntendo University · JPThe Open University of Japan · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Poly(ADP-ribose) polymerase (PARP)-1 promotes base excision repair and DNA strand break repair. Inhibitors of PARP enhance the cytotoxic effects of γ-irradiation and X-irradiation. We investigated the impact of PARP inhibition on the responses to γ-irradiation (low liner energy transfer [LET] radiation) and carbon-ion irradiation (high LET radiation) in the human pancreatic cancer cell line MIA PaCa-2. Cell survival was assessed by colony formation assay after combination treatment with the PARP inhibitor AZD2281 and single fraction γ-irradiation and carbon-ion irradiation (13 and 70 keV/μm [LET 13 and LET 70]). The DNA damage response (DDR) was assessed by pulse field gel electrophoresis, western blotting and flow cytometry. Treatment with a PARP inhibitor enhanced the cytotoxic effect of γ-irradiation and LET 13 and LET 70 carbon-ion irradiation. Moreover, the radiosensitization effect was greater for LET 70 than for LET 13 irradiation. Prolonged and increased levels of γ-H2AX were observed both after γ-irradiation and carbon-ion irradiation in the presence of the PARP inhibitor. Enhanced level of phosphorylated-p53 (Ser-15) was observed after γ-irradiation but not after carbon-ion irradiation. PARP inhibitor treatment induced S phase arrest and enhanced subsequent G2/M arrest both after γ-irradiation and carbon-ion irradiation. These results suggest that the induction of S phase arrest through an enhanced DDR and a local delay in DNA double strand break processing by PARP inhibition caused sensitization to γ-irradiation and carbon-ion irradiation. Taken together, PARP inhibitors might be applicable to a wide therapeutic range of LET radiation through their effects on the DDR.

Indexed as

Gamma RaysPoly(ADP-ribose) Polymerase InhibitorsRadiation-Sensitizing AgentsCell Line, TumorCell SurvivalDNA DamageDNA RepairEnzyme InhibitorsHistonesHumansLinear Energy TransferPancreatic NeoplasmsPhosphorylationPhthalazinesPiperazinesPoly(ADP-ribose) PolymerasesEnzyme InhibitorsH2AX protein, humanHistonesolaparibPhthalazinesPiperazinesPoly(ADP-ribose) Polymerase InhibitorsPoly(ADP-ribose) PolymerasesRadiation-Sensitizing AgentsTumor Suppressor Protein p53

Identifiers

PMID22404155
PMCPMC7685087
OpenAlexW2036901351

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.