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Water-in-PDMS emulsion templating of highly interconnected porous architectures for 3D cell culture

Riesco, Roberto and Boyer, Louisa and Blosse, Sarah and Lefebvre, Pauline M. and Assemat, Pauline and Leichle, Thierry and Accardo, Angelo and Malaquin, Laurent Water-in-PDMS emulsion templating of highly interconnected porous architectures for 3D cell culture. (2019) ACS Applied Materials and Interfaces, 11 (32). 28631-28640. ISSN 1944-8244

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Official URL: https://doi.org/10.1021/acsami.9b07564

Abstract

The development of advanced techniques of fabrication of three-dimensional (3D) microenvironments for the study of cell growth and proliferation has become one of the major motivations of material scientists and bioengineers in the past decade. Here, we present a novel residueless 3D structuration technique of poly(dimethylsiloxane) (PDMS) by water-in-PDMS emulsion casting and subsequent curing process in temperature-/pressure-controlled environment. Scanning electron microscopy and X-ray microcomputed tomography allowed us to investigate the impact of those parameters on the microarchitecture of the porous structure. We demonstrated that the optimized emulsion casting process gives rise to large-scale and highly interconnected network with pore size ranging from 500μm to 1.5 mm that turned out to be nicely adapted to 3D cell culture. Experimental cell culture validations were performed using SaOS-2 (osteosarcoma) cell lines. Epifluorescence and deep penetration imaging techniques as two-photon confocal microscopy unveiled information about cell morphology and confirmed a homogeneous cell proliferation and spatial distribution in the 3D porous structure within an available volume larger than 1 cm3. These results open alternative scenarios for the fabrication and integration of porous scaffolds for the development21of 3D cell culture platforms.

Item Type:Article
HAL Id:hal-02379789
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
French research institutions > Institut National de la Recherche Agronomique - INRA (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
French research institutions > Office National d'Etudes et Recherches Aérospatiales - ONERA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Université de Toulouse > Université Toulouse - Jean Jaurès - UT2J (FRANCE)
Université de Toulouse > Université Toulouse 1 Capitole - UT1 (FRANCE)
Laboratory name:
Funders:
European Commission - European Regional Development Fund - ERDF - Région Occitanie (FRANCE)
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Deposited On:26 Nov 2019 14:59

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