Evidence map›Paper›PMID 23570983›Full record

ArticleJournal of controlled release : official journal of the Controlled Release Society2013

Just getting into cells is not enough: mechanisms underlying 4-(N)-stearoyl gemcitabine solid lipid nanoparticle's ability to overcome gemcitabine resistance caused by RRM1 overexpression.

Piyanuch Wonganan, Dharmika S P Lansakara-P, Saijie Zhu, Melisande Holzer, Michael A Sandoval, Mangalika Warthaka, Zhengrong Cui

Abstract read
In one paragraph

Article in Journal of controlled release : official journal of the Controlled Release Society, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
1.6field-weighted citation impact, top 17% 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

19 citing papers in PubMed, 49 citations in OpenAlex.

  1. Article
  2. Review
  3. Improved Antitumor Efficiency ofInternational journal of nanomedicine · 2024
    Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
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  11. Article
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  13. Oral 4-(Oncotarget · 2017
    Article
  14. Review
  15. Article
  16. Review
  17. [Role of RRM1 in the Treatment and Prognosis of Advanced Non-small Cell Lung Cancer].Zhongguo fei ai za zhi = Chinese journal of lung cancer · 2015
    Review
  18. Review
  19. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 2 institutions in 1 country.

Piyanuch WongananPharmaceutics Division, The University of Texas at Austin, College of Pharmacy, Austin, TX 78712, USA.
Dharmika S P Lansakara-P
Saijie Zhu
Melisande Holzer
Michael A Sandoval
Mangalika Warthaka
Zhengrong Cui
The University of Texas at Austin · USAustin College · US

Funding

Overcoming pancreatic tumor resistance to gemcitabineR01CA135274 · NCI · UNIVERSITY OF TEXAS AT AUSTIN · PI CUI, ZHENGRONG · 2008 to 2017
$2.8M
NCI NIH HHS CA135274NCI NIH HHS R01 CA135274
6 · The paper itself

Abstract

Gemcitabine is a deoxycytidine analog that is widely used in the chemotherapy of many solid tumors. However, acquired tumor cell resistance often limits its use. Previously, we discovered that 4-(N)-stearoyl gemcitabine solid lipid nanoparticles (4-(N)-GemC18-SLNs) can overcome multiple acquired gemcitabine resistance mechanisms, including RRM1 overexpression. The present study was designed to elucidate the mechanisms underlying the 4-(N)-GemC18-SLNs' ability to overcome gemcitabine resistance. The 4-(N)-GemC18 in the 4-(N)-GemC18-SLNs entered tumor cells due to clathrin-mediated endocytosis of the 4-(N)-GemC18-SLNs into the lysosomes of the cells, whereas the 4-(N)-GemC18 alone in solution entered cells by diffusion. We substantiated that it is the way the 4-(N)-GemC18-SLNs deliver the 4-(N)-GemC18 into tumor cells that allows the gemcitabine hydrolyzed from the 4-(N)-GemC18 to be more efficiently converted into its active metabolite, gemcitabine triphosphate (dFdCTP), and thus more potent against gemcitabine-resistant tumor cells than 4-(N)-GemC18 or gemcitabine alone. Moreover, we also showed that the RRM1-overexpressing tumor cells were also cross-resistant to cytarabine, another nucleoside analog commonly used in cancer therapy, and 4-(N)-stearoyl cytarabine carried by solid lipid nanoparticles can also overcome the resistance. Therefore, formulating the long-chain fatty acid amide derivatives of nucleoside analogs into solid lipid nanoparticles may represent a platform technology to increase the antitumor activity of the nucleoside analogs and to overcome tumor cell resistance to them.

Indexed as

AnimalsAntimetabolites, AntineoplasticCell Line, TumorDeoxycytidineDiffusionDrug CarriersDrug Resistance, NeoplasmEndocytosisFemaleHydrolysisLipidsLungLung NeoplasmsMiceNanoparticlesRibonucleoside Diphosphate Reductase4-(N)-stearoylgemcitabineAntimetabolites, AntineoplasticDeoxycytidineDrug CarriersLipidsRibonucleoside Diphosphate ReductaseRibonucleotide ReductasesRrm1 protein, mouse

Identifiers

PMID23570983
PMCPMC3683387
OpenAlexW2014245211

What OpenQuestion holds

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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.