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DNA Origami Penetration in Cell Spheroid Tissue Models is Enhanced by Wireframe Design
Author(s) -
Wang Yang,
Benson Erik,
Fördős Ferenc,
Lolaico Marco,
Baars Igor,
Fang Trixy,
Teixeira Ana I.,
Högberg Björn
Publication year - 2021
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.202008457
Subject(s) - dna origami , materials science , rod , nanotechnology , biophysics , dna , penetration (warfare) , geometry , nanostructure , chemistry , mathematics , biology , medicine , biochemistry , alternative medicine , pathology , operations research
Abstract As DNA origami applications in biomedicine are expanding, more knowledge is needed to assess these structures’ interaction with biological systems. Here, uptake and penetration in cell and cell spheroid tissue models (CSTMs) are studied to elucidate whether differences in internal structure can be a factor in the efficacy of DNA‐origami‐based delivery. Two structures bearing largely similar features in terms of both geometry and molecular weight, but with different internal designs—being either compact, lattice‐based origami or following an open, wireframe design—are designed. In CSTMs, wireframe rods are able to penetrate deeper than close‐packed rods. Moreover, doxorubicin‐loaded wireframe rods show a higher cytotoxicity in CSTMs. These results can be explained by differences in structural mechanics, local deformability, local material density, and accessibility to cell receptors between these two DNA origami design paradigms. In particular, it is suggested that the main reason for the difference in penetration dynamic arises from differences in interaction with scavenger receptors where lattice‐based structures appear to be internalized to a higher degree than polygonal structures of the same size and shape. It is thus argued that the choice of structural design method constitutes a crucial parameter for the application of DNA origami in drug delivery.