Evidence map›Paper›PMID 29038517›Full record

ArticleScientific reports2017

Interplay between the gold nanoparticle sub-cellular localization, size, and the photon energy for radiosensitization.

Eli Lechtman, Jean-Philippe Pignol

Abstract read
In one paragraph

Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing 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

21 citing papers in PubMed.

  1. Review
  2. Review
  3. Article
  4. Application of nano-radiosensitizers in combination cancer therapy.Bioengineering & translational medicine · 2023
    Review
  5. Article
  6. Review
  7. Article
  8. Treatment planning with a 2.5 MV photon beam for radiation therapy.Journal of applied clinical medical physics · 2022
    Article
  9. Article
  10. Review
  11. Article
  12. Radiosensitization effects by bismuth oxide nanorods of different sizes in megavoltage external beam radiotherapy.Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology · 2021
    Article
  13. Article
  14. Article
  15. Mechanisms for Tuning Engineered Nanomaterials to Enhance Radiation Therapy of Cancer.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2020
    Review
  16. Article
  17. Article
  18. Review
  19. In Vitro Methods for Assessing Nanoparticle Toxicity.Methods in molecular biology (Clifton, N.J.) · 2019
    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.

Eli LechtmanDepartment of Medical Biophysics, University of Toronto at Sunnybrook Health Sciences Centre, Ontario, Canada.
Jean-Philippe PignolDepartment of Radiation Oncology, Erasmus MC Cancer Centre, Rotterdam, The Netherlands. j.p.pignol@erasmusmc.nl.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

There are large variations in the reported efficiency of gold nanoparticle (GNP) radiosensitization. We have previously reported on a predictive model, which accounts for the detailed Auger and photoelectron tracks to calculate the cell survival probability. After validating our model using PC-3 cells incubated with 2 mg/ml of 30 nm GNPs and irradiated with 100 kVp or 300 kVp beams, we evaluated the interplay between photon energy, GNP size (1.9 and 100 nm) and sub-cellular localization. Experiments were in excellent agreement with the model. In predictive modeling, using a 100 kVp source and 1.9 nm nanoparticles, GNP localization had a significant impact on cell survival. A sensitizer enhancement ratio of 1.34 was achieved when GNPs were localized outside the cells, increasing to 2.56 when GNPs were also distributed in the cytoplasm and nucleus. Using a 300 kVp source, which emits photons mainly above the gold K-edge, the dependence on GNP localization and size was barely detectable, since long ranged electrons dominate the energy deposition. In summary, achieving intracellular uptake with targeted-GNPs can significantly enhance radiosensitization for photon energies below the gold K-edge, where Auger electrons contribute significantly to the local energy deposition. For higher energies, this is much less important.

Indexed as

Cell Line, TumorGoldHumansMaleMetal NanoparticlesMonte Carlo MethodParticle SizePhotonsRadiation-Sensitizing AgentsGoldRadiation-Sensitizing Agents

Identifiers

PMID29038517
PMCPMC5643548

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Registered trials

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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.