3-D tissue culture systems for the evaluation and optimization of nanoparticle-based drug carriers.
Nanoparticle carriers are attractive vehicles for a variety of drug delivery applications. In order to evaluate nanoparticle formulations for biological efficacy, monolayer cell cultures are typically used as in vitro testing platforms. However, these studies sometimes poorly predict the efficacy of the drug in vivo. The poor in vitro and in vivo correlation may be attributed in part to the inability of two-dimensional cultures to reproduce extracellular barriers, and may also be due to differences in cell phenotype between cells cultured as monolayers and cells in native tissue. In order to more accurately predict in vivo results, it is desirable to test nanoparticle therapeutics in cells cultured in three-dimensional (3-D) models that mimic in vivo conditions. In this review, we discuss some 3-D culture systems that have been used to assess nanoparticle delivery and highlight several implications for nanoparticle design garnered from studies using these systems. While our focus will be on nanoparticle drug formulations, many of the systems discussed here could, or have been, used for the assessment of small molecule or peptide/protein drugs. We also offer some examples of advancements in 3-D culture that could provide even more highly predictive data for designing nanoparticle therapeutics for in vivo applications.
Goodman
Thomas Tyrel
TT
Department of Bioengineering, University of Washington, 1705 NE Pacific Street, Seattle, Washington 98195, USA.
Ng
Chee Ping
CP
Pun
Suzie Hwang
SH
D000818:Animals; D046508:Culture Techniques / Q000379:methods*; D004337:Drug Carriers / Q000737:chemistry* / Q000378:metabolism*; D006801:Humans; D020100:Hydrogels / Q000737:chemistry; D053758:Nanoparticles / Q000737:chemistry; D010477:Perfusion; D018874:Spheroids, Cellular / Q000378:metabolism
D004337:Drug Carriers; D020100:Hydrogels
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