Evidence map›Paper›PMID 31009200›Full record

ArticleACS nano2019

Cross-Correlative Single-Cell Analysis Reveals Biological Mechanisms of Nanoparticle Radiosensitization.

Tyron Turnbull, Michael Douglass, Nathan H Williamson, Douglas Howard, Richa Bhardwaj, Mark Lawrence, David J Paterson, Eva Bezak, Benjamin Thierry, Ivan M Kempson

Open access · greenAbstract read
In one paragraph

Article in ACS nano, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
7.0field-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

26 citing papers in PubMed, 53 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. New approaches to overcome radioresistance in glioblastoma: mechanisms, targets and role of innovative therapies, new particles and non-photon radiotherapy in 2024. A systematic review.Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology · 2025
    Review
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Review
  12. Article
  13. Review
  14. Review
  15. Review
  16. Article
  17. Review
  18. Article
  19. Article
  20. Review
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

10 authors at 5 institutions in 2 countries.

Tyron TurnbullFuture Industries Institute , University of South Australia , Mawson Lakes , South Australia 5095 , Australia.
Michael DouglassDepartment of Medical Physics , Royal Adelaide Hospital , Adelaide , South Australia 5000 , Australia.
Nathan H WilliamsonFuture Industries Institute , University of South Australia , Mawson Lakes , South Australia 5095 , Australia.
Douglas HowardFuture Industries Institute , University of South Australia , Mawson Lakes , South Australia 5095 , Australia.
Richa BhardwajFuture Industries Institute , University of South Australia , Mawson Lakes , South Australia 5095 , Australia.
Mark LawrenceDepartment of Critical Care Medicine , Flinders University , Adelaide , South Australia 5042 , Australia.
David J PatersonAustralian Synchrotron , Clayton , Victoria 3168 , Australia.
Eva BezakDepartment of Physics , University of Adelaide , Adelaide , South Australia 5005 , Australia.
Benjamin ThierryFuture Industries Institute , University of South Australia , Mawson Lakes , South Australia 5095 , Australia.ORCID 0000-0002-6757-2842
Ivan M KempsonFuture Industries Institute , University of South Australia , Mawson Lakes , South Australia 5095 , Australia.ORCID 0000-0002-3886-9516
University of South Australia · AUAustralian Synchrotron · AUFlinders University · AUNational Institutes of Health · USRoyal Adelaide Hospital · AU

Funding

Intramural NIH HHS Z99 HD999999
6 · The paper itself

Abstract

Nanoparticle radiosensitization has been demonstrated well to enhance the effects of radiotherapy, motivate the improvement of therapeutic ratios, and decrease morbidity in cancer treatment. A significant challenge exists in optimizing formulations and translation due to insufficient knowledge of the associated mechanisms, which have historically been limited to physical concepts. Here, we investigated a concept for the role of biological mechanisms. The mere presence of gold nanoparticles led to a down-regulation of thymidylate synthase, important for DNA damage repair in the radioresistant S-phase cells. By developing a cross-correlative methodology to reveal probabilistic gold nanoparticle uptake by cell sub-populations and the associated sensitization as a function of the uptake, a number of revealing observations have been achieved. Surprisingly, for low numbers of nanoparticles, a desensitization action was observed. Sensitization was discovered to preferentially impact S-phase cells, in which impairment of the DNA damage response by the homologous recombination pathway dominates. This small but radioresistant cell population correlates with much greater proliferative ability. Thus, a paradigm is presented whereby enhanced DNA damage is not necessarily due to an increase in the number of DNA double-strand breaks (DSBs) created but can be from a nanoparticle-induced impairment of the damage response by down-regulating repair proteins such as thymidylate synthase.

Indexed as

Single-Cell AnalysisCell Line, TumorDNA Breaks, Double-StrandedDown-RegulationEndocytosisGoldHistonesHumansNanoparticlesRadiation-Sensitizing AgentsS PhaseThymidylate SynthaseGoldH2AX protein, humanHistonesRadiation-Sensitizing AgentsThymidylate SynthaseDNA damage repairgene regulationnanoparticlesradiosensitizationradiotherapy

Identifiers

PMID31009200
PMCPMC6546286
OpenAlexW2935698637

What OpenQuestion holds

Textmetadata
LicenceTDM
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.