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Fabrication of modular hyaluronan-PEG hydrogels to support 3D cultures of hepatocytes in a perfused liver-on-a-chip device
Linköpings universitet, Institutionen för fysik, kemi och biologi, Teknisk biologi. Linköpings universitet, Tekniska fakulteten.ORCID-id: 0000-0001-5914-2837
Linköpings universitet, Institutionen för fysik, kemi och biologi, Molekylär fysik. Linköpings universitet, Tekniska fakulteten.ORCID-id: 0000-0001-7921-8915
Linköpings universitet, Institutionen för fysik, kemi och biologi, Molekylär fysik. Linköpings universitet, Tekniska fakulteten.ORCID-id: 0000-0002-2803-2237
Linköpings universitet, Institutionen för fysik, kemi och biologi, Molekylär fysik. Linköpings universitet, Tekniska fakulteten.ORCID-id: 0000-0002-1781-1489
Vise andre og tillknytning
2018 (engelsk)Inngår i: Biofabrication, ISSN 1758-5082, E-ISSN 1758-5090, Vol. 11, nr 1, s. 1-13, artikkel-id 015013Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Liver cell culture models are attractive in both tissue engineering and for development of assays for drug toxicology research. To retain liver specific cell functions, the use of adequate cell types and culture conditions, such as a 3D orientation of the cells and a proper supply of nutrients and oxygen, are critical. In this article, we show how extracellular matrix mimetic hydrogels can support hepatocyte viability and functionality in a perfused liver-on-a-chip device. A modular hydrogel system based on hyaluronan and poly(ethylene glycol) (HA-PEG), modified with cyclooctyne moieties for bioorthogonal strain-promoted alkyne-azide 1, 3-dipolar cycloaddition (SPAAC), was developed, characterized, and compared for cell compatibility to hydrogels based on agarose and alginate. Hepatoma cells (HepG2) formed spheroids with viable cells in all hydrogels with the highest expression of albumin and urea in alginate hydrogels. By including an excess of cyclooctyne in the HA backbone, azide-modified cell adhesion motifs (linear and cyclic RGD peptides) could be introduced in order to enhance viability and functionality of human induced pluripotent stem cell derived hepatocytes (hiPS-HEPs). In the HA-PEG hydrogels modified with cyclic RGD peptides hiPS-HEPs migrated and grew in 3D and showed an increased viability and higher albumin production compared to when cultured in the other hydrogels. This flexible SPAAC crosslinked hydrogel system enabled fabrication of perfused 3D cell culture of hiPS-HEPs and is a promising material for further development and optimization of liver-on-a-chip devices.

sted, utgiver, år, opplag, sider
Institute of Physics (IOP), 2018. Vol. 11, nr 1, s. 1-13, artikkel-id 015013
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-154008DOI: 10.1088/1758-5090/aaf657OAI: oai:DiVA.org:liu-154008DiVA, id: diva2:1281374
Tilgjengelig fra: 2019-01-22 Laget: 2019-01-22 Sist oppdatert: 2019-01-22bibliografisk kontrollert
Inngår i avhandling
1. Organs-on-chips for the pharmaceutical development process: design perspectives and implementations
Åpne denne publikasjonen i ny fane eller vindu >>Organs-on-chips for the pharmaceutical development process: design perspectives and implementations
2018 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

Organs-on-chips are dynamic cell culture devices created with the intention to mimic organ function in vitro. Their purpose is to assess the toxicity and efficacy of drugs and, as early as possible in the pharmaceutical development process, predict the outcome of clinical trials. The aim of this thesis is to explain and discuss these cell culture devices from a design perspective and to experimentally exemplify some of the specific functions that characterize organs-on-chips.

The cells in our body reside in complex environments with chemical and mechanical cues that affect their function and purpose. Such a complex environment is difficult to recreate in the laboratory and has therefore been overlooked in favor of more simple models, i.e. static twodimensional (2D) cell cultures. Numerous recent reports have shown cell culture systems that can resemble the cell’s natural habitat and enhance cell functionality and thereby potentially provide results that better reflects animal and human trials. The way these organs-on-chips improve in vitro cell culture assays is to include e.g. a three-dimensional cell architecture (3D), mechanical stimuli, gradients of oxygen or nutrients, or by combining several relevant cell types that affect each other in close proximity.

The research conducted for this thesis shows how cells in 3D spheroids or in 3D hydrogels can be cultured in perfused microbioreactors. Furthermore, a pump based on electroosmosis, and a method for an objective conceptual design process, is introduced to the field of organs-on-chips.

sted, utgiver, år, opplag, sider
Linköping: Linköping University Electronic Press, 2018. s. 78
Serie
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 1907
Emneord
Organs-on-chips, cell culture models, pharmaceutical development, microfluidics
HSV kategori
Identifikatorer
urn:nbn:se:liu:diva-145300 (URN)10.3384/diss.diva-145300 (DOI)9789176853597 (ISBN)
Disputas
2018-03-23, Planck, Fysikhuset, Campus Valla, Linköping, 13:30 (engelsk)
Opponent
Veileder
Merknad

I den tryckta versionen är det ena serienamnet felaktigt. I den elektroniska versionen är detta ändrat till korrekt "Linköping Studies in Science and Technology. Dissertations"

Tilgjengelig fra: 2018-02-21 Laget: 2018-02-21 Sist oppdatert: 2019-09-26bibliografisk kontrollert

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Fabrication of modular hyaluronan-PEG hydrogels to support 3D cultures of hepatocytes in a perfused liver-on-a-chip device(1710 kB)76 nedlastinger
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