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TitleBiochemical gradients to generate 3D heterotypic-like tissues with isotropic and anisotropic architectures
Author(s)Canadas, Raphael Faustino
Ren, Tachen
Marques, A. P.
Oliveira, J. M.
Reis, R. L.
Demirci, Utkan
biochemical gradients
heterotypic tissues
microparticle gradients
Issue date2018
JournalAdvanced Functional Materials
CitationCanadas R. F., Ren T., Marques A. P., Oliveira J. M., Reis R. L., Demirci U. Biochemical Gradients to Generate 3D Heterotypic-Like Tissues with Isotropic and Anisotropic Architectures, Advanced Functional Materials, Issue 1804148, doi: 10.1002/adfm.201804148, 2018
Abstract(s)Anisotropic 3D tissue interfaces with functional gradients found in nature are replicated in vitro for drug development and tissue engineering. Even though different fabrication techniques, based on material science engineering and microfluidics, are used to generate such microenvironments, mimicking the native tissue gradient is still a challenge. Here, the fabrication of 3D structures are described with linear/random porosity and gradient distribution of hydroxyapatite microparticles which are combined with a gradient of growth factors generated by a dual chamber for the development of heterotypicâ like tissues. The hydroxyapatite gradient is formed by applying a thermal ramp from the first to the second gel layer, and the porous architecture is controlled through ice templating. A 3D osteochondral (OC) tissue model is developed by codifferentiating fat pad adiposeâ derived stem cells. Osteogenic and chondrogenic markers expression is spatially controlled, as it occurs in the native osteochondral unit. Additionally, a prevasculature is spatially induced by the perfusion of proangiogenic medium in the boneâ like region, as observed in the native subchondral bone. Thus, in this study, precise spatial control is developed over cell/tissue phenotype and formation of prevasculature which opens up possibilities for the study of complex tissues interfaces, with broader applications in drug testing and regenerative medicine.
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AccessEmbargoed access (2 Years)
Appears in Collections:3B’s - Artigos em revistas/Papers in scientific journals

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