Evidence map›Paper›PMID 23797686›Full record

ArticleCancer chemotherapy and pharmacology2013

Validation of tumour models for use in anticancer nanomedicine evaluation: the EPR effect and cathepsin B-mediated drug release rate.

Ruth Duncan, Yee-Nee Sat-Klopsch, Angelika M Burger, Michael C Bibby, Heinz H Fiebig, Edward A Sausville

Open access · hybridAbstract read
In one paragraph

Article in Cancer chemotherapy and pharmacology, 2013. 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
3.3field-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

21 citing papers in PubMed, 61 citations in OpenAlex.

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  8. Melanoma tumour vasculature heterogeneity: from mice models to human.Journal of cancer research and clinical oncology · 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

6 authors at 4 institutions in 3 countries.

Ruth DuncanCentre for Polymer Therapeutics, The School of Pharmacy, 29-39 Brunswick Square, London, UK. profruthduncan@btinternet.com
Yee-Nee Sat-Klopsch
Angelika M Burger
Michael C Bibby
Heinz H Fiebig
Edward A Sausville
Oeko Institut · DEMedway School of Pharmacy · GBUniversity of Bradford · GBUniversity of Maryland, Baltimore · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeIntravenously (i.v.) administered nanomedicines have the potential for tumour targeting due to the enhanced permeability and retention (EPR) effect, but in vivo tumour models are rarely calibrated with respect to functional vascular permeability and/or mechanisms controlling intratumoural drug release. Here the effect of tumour type and tumour size on EPR-mediated tumour localisation and cathepsin B-mediated drug release was studied.

methodsEvans Blue (10 mg/kg) and an N-(2-hydroxypropyl) methacrylamide (HPMA) copolymer–doxorubicin (Dox) conjugate (FCE28068) (5 mg/kg Dox-equiv) were used as probes and tumour levels (and Dox release) measured at 1 h after i.v. administration in a panel of murine and human xenograft tumours.

resultsEvans Blue and FCE28068 displayed similar tumour levels in the range of 2–18 % dose/g at 1 h for B16F10 and L1210. Approximately half of the tumour models evaluated exhibited tumour size-dependent accumulation of FCE28068; smaller tumours had the highest accumulation. Administration of free Dox (5 mg/kg) produced tumour levels of \2.5 % dose/g independent of tumour size. Whereas the degree of EPR-mediated targeting showed *12-fold difference across the tumour models evaluated, Dox release from FCE28068 at 1 h displayed *200-fold variation.

conclusionsMarked heterogeneity was seen in terms of EPR effect and Dox release rate, underlining the need to carefully calibrate tumour models used to benchmark nanomedicines against known relevant standard agents and for optimal development of strategies for late pre-clinical and clinical development.

Indexed as

Disease Models, AnimalNanotechnologyAcrylamidesAnimalsAntibiotics, AntineoplasticAntineoplastic AgentsCathepsin BCell Line, TumorColoring AgentsDelayed-Action PreparationsDoxorubicinEvans BlueHumansLeukemia L1210MicePermeabilityAcrylamidesAntibiotics, AntineoplasticAntineoplastic AgentsCathepsin BColoring AgentsDelayed-Action PreparationsDoxorubicinEvans BlueN-(2-hydroxypropyl)methacrylamide co-polymer-doxorubicin conjugatePolyglutamic AcidPolymers

Identifiers

PMID23797686
PMCPMC3718995
OpenAlexW2089317346

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LicenceCC BY
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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.