Pharmacokinetic analysis reveals limitations and opportunities for nanomedicine targeting of endothelial and extravascular compartments of tumours

Targeting of nanoparticles to tumours can potentially improve the specificity of imaging and treatments. We have developed a multicompartmental pharmacokinetic model in order to analyse some of the factors that control efficiency of targeting to intravascular (endothelium) and extravascular (tumour cells and stroma) compartments. We make the assumption that transport across tumour endothelium is an important step for subsequent nanoparticle accumulation in the tumour (area-under-the-curve, AUC) regardless of entry route (interendothelial and transendothelial routes) and study this through a multicompartmental simulation. Our model reveals that increasing endothelial targeting efficiency has a much stronger effect on the AUC than increasing extravascular targeting efficiency. Furthermore, our analysis reveals that both extravasation and intratumoral diffusion rates need to be increased in order to significantly increase the AUC of extravascular-targeted nanoparticles. Increasing the nanoparticle circulation half-life increases the AUC independently of extravasation and intratumoral diffusion. Targeting the extravascular compartment leads to a buildup in the first layer surrounding blood vessels at the expense of deeper layers (binding site barrier). This model explains some of the limitations of tumour targeting and provides important guidelines for the design of targeted nanomedicines.

Medienart:

E-Artikel

Erscheinungsjahr:

2019

Erschienen:

2019

Enthalten in:

Zur Gesamtaufnahme - volume:27

Enthalten in:

Journal of drug targeting - 27(2019), 5-6 vom: 07. Juni, Seite 690-698

Sprache:

Englisch

Beteiligte Personen:

Benchimol, Michael J [VerfasserIn]
Bourne, David [VerfasserIn]
Moghimi, Seyed Moein [VerfasserIn]
Simberg, Dmitri [VerfasserIn]

Links:

Volltext

Themen:

Antineoplastic Agents
Diffusion
Extravasation
Journal Article
Modelling
Nanoparticle
Pharmacokinetics
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Targeting
Tumour

Anmerkungen:

Date Completed 27.07.2020

Date Revised 27.07.2020

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1080/1061186X.2019.1566339

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM292428472