Evidence map›Paper›PMID 28399862›Full record

ArticleJournal of nanobiotechnology2017

Chitosan nanoparticle-mediated co-delivery of shAtg-5 and gefitinib synergistically promoted the efficacy of chemotherapeutics through the modulation of autophagy.

Yan Zheng, Chang Su, Liang Zhao, Yijie Shi

Open access · goldAbstract read
In one paragraph

Article in Journal of nanobiotechnology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
2.8field-weighted citation impact, top 9% 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

17 citing papers in PubMed, 40 citations in OpenAlex.

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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

4 authors at 1 institution in 1 country.

Yan ZhengSchool of Pharmacy, Jinzhou Medical University, Jinzhou, 121000, People's Republic of China.
Chang SuSchool of Veterinary Medicine, Jinzhou Medical University, Jinzhou, 121000, People's Republic of China.
Liang ZhaoSchool of Pharmacy, Jinzhou Medical University, Jinzhou, 121000, People's Republic of China. liangzhao79@163.com.
Yijie ShiSchool of Pharmacy, Jinzhou Medical University, Jinzhou, 121000, People's Republic of China. shiyijie119@163.com.
Jinzhou Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAutophagy reportedly plays vital and complex roles in many diseases. During times of starvation or energy deficiency, autophagy will occur at higher levels to provide cells with the nutrients or energy necessary to survive in stressful conditions. Some anti-cancer drugs induce protective autophagy and reduce cell apoptosis. Autophagy can adversely affect apoptosis, and blocking autophagy will increase the sensitivity of cells to apoptosis signals.

methodsWe designed chitosan nanoparticles (NPs) to promote the co-delivery of gefitinib (an anti-cancer drug) and shRNA-expressing plasmid DNA that targets the Atg-5 gene (shAtg-5) as an autophagy inhibitor to improve anti-cancer effects and autophagy mediation.

resultsThe results showed that when compared to treatment with a single drug, chitosan NPs were able to facilitate the intracellular distribution of NPs, and they improved the transfection efficiency of gene in vitro. The co-delivery of gefitinib and shAtg-5 increased cytotoxicity, induced significant apoptosis through the prohibition of autophagy, and markedly inhibited tumor growth in vivo.

conclusionsThe co-delivery of gefitinib/shAtg-5 in chitosan NPs produced superior anti-cancer efficacy via the internalization effect of NPs, while blocking autophagy with shAtg-5 enhanced the synergistic antitumor efficacy of gefitinib.

Indexed as

Drug Delivery SystemsA549 CellsAnimalsAntineoplastic AgentsApoptosisAutophagyAutophagy-Related Protein 5Cell Line, TumorChitosanFemaleGefitinibGene SilencingHumansMice, Inbred BALB CMice, NudeNanomedicineAntineoplastic AgentsATG5 protein, humanAutophagy-Related Protein 5ChitosanGefitinibQuinazolinesRNA, Small InterferingApoptosisAutophagyGefitinibNanoparticlesshAtg-5

Identifiers

PMID28399862
PMCPMC5387274
OpenAlexW2605484158

What OpenQuestion holds

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LicenceCC BY
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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.