Evidence map›Paper›PMID 25818440›Full record

ArticleBiomaterials2015

A highly tumor-targeted nanoparticle of podophyllotoxin penetrated tumor core and regressed multidrug resistant tumors.

Aniruddha Roy, Mark J Ernsting, Elijus Undzys, Shyh-Dar Li

Abstract read
In one paragraph

Article in Biomaterials, 2015. 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
4.4field-weighted citation impact, top 5% 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, 74 citations in OpenAlex.

  1. Review
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  5. Harnessing small extracellular vesicles for pro-oxidant delivery: novel approach for drug-sensitive and resistant cancer therapy.Journal of controlled release : official journal of the Controlled Release Society · 2024
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  18. Rapid Microfluidic Preparation of Niosomes for Targeted Drug Delivery.International journal of molecular sciences · 2019
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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.

Aniruddha RoyDrug Delivery and Formulation, Drug Discovery Platform, Ontario Institute for Cancer Research, 101 College Street, Suite 800, Toronto, Ontario M5G 0A3, Canada; Faculty of Pharmaceutical Sciences, The University of British Columbia, 2405 Wesbrook Mall, Vancouver, British Columbia V6T 1Z3, Canada.
Mark J ErnstingDrug Delivery and Formulation, Drug Discovery Platform, Ontario Institute for Cancer Research, 101 College Street, Suite 800, Toronto, Ontario M5G 0A3, Canada; Faculty of Engineering and Architectural Science, Ryerson University, Toronto, Ontario M5B 1Z2, Canada.
Elijus UndzysDrug Delivery and Formulation, Drug Discovery Platform, Ontario Institute for Cancer Research, 101 College Street, Suite 800, Toronto, Ontario M5G 0A3, Canada.
Shyh-Dar LiDrug Delivery and Formulation, Drug Discovery Platform, Ontario Institute for Cancer Research, 101 College Street, Suite 800, Toronto, Ontario M5G 0A3, Canada; Faculty of Pharmaceutical Sciences, The University of British Columbia, 2405 Wesbrook Mall, Vancouver, British Columbia V6T 1Z3, Canada. Electronic address: shyh-dar.li@ubc.ca.
Ontario Institute for Cancer Research · CA

Funding

Stromal depletion for pancreatic cancer therapyR21CA176339 · NCI · UNIVERSITY OF BRITISH COLUMBIA · PI FOLTZ, WARREN, HEDLEY, DAVID · 2013 to 2014
$374k
Canadian Institutes of Health Research MSH-130195Canadian Institutes of Health Research PPP-122898)NCI NIH HHS CA17633901NCI NIH HHS R21 CA176339
6 · The paper itself

Abstract

Podophyllotoxin (PPT) exhibited significant activity against P-glycoprotein mediated multidrug resistant (MDR) tumor cell lines; however, due to its poor solubility and high toxicity, PPT cannot be dosed systemically, preventing its clinical use for MDR cancer. We developed a nanoparticle dosage form of PPT by covalently conjugating PPT and polyethylene glycol (PEG) with acetylated carboxymethyl cellulose (CMC-Ac) using one-pot esterification chemistry. The polymer conjugates self-assembled into nanoparticles (NPs) of variable sizes (20-120 nm) depending on the PPT-to-PEG molar ratio (2-20). The conjugate with a low PPT/PEG molar ratio of 2 yielded NPs with a mean diameter of 20 nm and released PPT at ∼5%/day in serum, while conjugates with increased PPT/PEG ratios (5 and 20) produced bigger particles (30 nm and 120 nm respectively) that displayed slower drug release (∼2.5%/day and ∼1%/day respectively). The 20 nm particles exhibited 2- to 5-fold enhanced cell killing potency and 5- to 20-fold increased tumor delivery compared to the larger NPs. The biodistribution of the 20 nm PPT-NPs was highly selective to the tumor with 8-fold higher accumulation than all other examined tissues, while the larger PPT-NPs (30 and 120 nm) exhibited increased liver uptake. Within the tumor, >90% of the 20 nm PPT-NPs penetrated to the hypovascular core, while the larger particles were largely restricted in the hypervascular periphery. The 20 nm PPT-NPs displayed significantly improved efficacy against MDR tumors in mice compared to the larger PPT-NPs, native PPT and the standard taxane chemotherapies, with minimal toxicity.

Indexed as

Drug Resistance, MultipleDrug Resistance, NeoplasmAnimalsAntineoplastic AgentsATP Binding Cassette Transporter, Subfamily B, Member 1Biocompatible MaterialsCell Line, TumorCell ProliferationCell SurvivalDrug Delivery SystemsFemaleHumansMaximum Tolerated DoseMiceNanoparticlesNeoplasmsAntineoplastic AgentsATP Binding Cassette Transporter, Subfamily B, Member 1Biocompatible MaterialsPodophyllotoxinPolyethylene GlycolsDrug deliveryMultidrug resistanceNanoparticlesPodophyllotoxin

Identifiers

PMID25818440
PMCPMC4379456
OpenAlexW2021887044

What OpenQuestion holds

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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.