Penetration of endothelial cell coated multicellular tumor spheroids by iron oxide nanoparticles.

Abstract:

:Iron oxide nanoparticles are a useful diagnostic contrast agent and have great potential for therapeutic applications. Multiple emerging diagnostic and therapeutic applications and the numerous versatile parameters of the nanoparticle platform require a robust biological model for characterization and assessment. Here we investigate the use of iron oxide nanoparticles that target tumor vasculature, via the tumstatin peptide, in a novel three-dimensional tissue culture model. The developed tissue culture model more closely mimics the in vivo environment with a leaky endothelium coating around a glioma tumor mass. Tumstatin-iron oxide nanoparticles showed penetration and selective targeting to endothelial cell coating on the tumor in the three-dimensional model, and had approximately 2 times greater uptake in vitro and 2.7 times tumor neo-vascularization inhibition. Tumstatin provides targeting and therapeutic capabilities to the iron oxide nanoparticle diagnostic contrast agent platform. And the novel endothelial cell-coated tumor model provides an in vitro microtissue environment to evaluate nanoparticles without moving into costly and time-consuming animal models.

journal_name

Theranostics

journal_title

Theranostics

authors

Ho DN,Kohler N,Sigdel A,Kalluri R,Morgan JR,Xu C,Sun S

doi

10.7150/thno.3568

subject

Has Abstract

pub_date

2012-01-01 00:00:00

pages

66-75

issue

1

issn

1838-7640

pii

thnov02p0066

journal_volume

2

pub_type

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