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https://doi.org/10.1371/journal.pone.0197101
Title: | A multi-chamber microfluidic intestinal barrier model using Caco-2 cells for drug transport studies | Authors: | Tan H.-Y. Trier S. Rahbek U.L. Dufva M. Kutter J.P. Andresen T.L. |
Keywords: | aminopeptidase dextran insulin mannitol multidrug resistance protein 1 politef rhodamine 123 tight junction protein ABC transporter subfamily B ABCB1 protein, human dextran insulin maltose mannitol rhodamine 123 tetradecyl maltoside Article biocompatibility biological model Caco-2 cell line cell differentiation cell growth controlled study drug transport electric resistance enzyme activity human human cell hydrophilicity immunocytochemistry intestine melting point microfluidics monolayer culture mucus permeability barrier analogs and derivatives Caco-2 cell line cytology devices drug effect intestine absorption intestine mucosa lab on a chip metabolism microfluidic analysis procedures ATP Binding Cassette Transporter, Sub-Family B Caco-2 Cells Dextrans Humans Insulin Intestinal Absorption Intestinal Mucosa Lab-On-A-Chip Devices Maltose Mannitol Microfluidic Analytical Techniques Rhodamine 123 |
Issue Date: | 2018 | Citation: | Tan H.-Y., Trier S., Rahbek U.L., Dufva M., Kutter J.P., Andresen T.L. (2018). A multi-chamber microfluidic intestinal barrier model using Caco-2 cells for drug transport studies. PLoS ONE 13 (5) : e0197101. ScholarBank@NUS Repository. https://doi.org/10.1371/journal.pone.0197101 | Rights: | Attribution 4.0 International | Abstract: | This paper presents the design and fabrication of a multi-layer and multi-chamber microchip system using thiol-ene ‘click chemistry’ aimed for drug transport studies across tissue barrier models. The fabrication process enables rapid prototyping of multi-layer microfluidic chips using different thiol-ene polymer mixtures, where porous Teflon membranes for cell monolayer growth were incorporated by masked sandwiching thiol-ene-based fluid layers. Electrodes for trans-epithelial electrical resistance (TEER) measurements were incorporated using low-melting soldering wires in combination with platinum wires, enabling parallel real-time monitoring of barrier integrity for the eight chambers. Additionally, the translucent porous Teflon membrane enabled optical monitoring of cell monolayers. The device was developed and tested with the Caco-2 intestinal model, and compared to the conventional Transwell system. Cell monolayer differentiation was assessed via in situ immunocyto-chemistry of tight junction and mucus proteins, P-glycoprotein 1 (P-gp) mediated efflux of Rhodamine 123, and brush border aminopeptidase activity. Monolayer tightness and relevance for drug delivery research was evaluated through permeability studies of mannitol, dextran and insulin, alone or in combination with the absorption enhancer tetradecylmaltoside (TDM). The thiol-ene-based microchip material and electrodes were highly compatible with cell growth. In fact, Caco-2 cells cultured in the device displayed differentiation, mucus production, directional transport and aminopeptidase activity within 9–10 days of cell culture, indicating robust barrier formation at a faster rate than in conventional Transwell models. The cell monolayer displayed high TEER and tightness towards hydrophilic compounds, whereas co-administration of an absorption enhancer elicited TEER-decrease and increased permeability similar to the Transwell cultures. The presented cell barrier microde-vice constitutes a relevant tissue barrier model, enabling transport studies of drugs and chemicals under real-time optical and functional monitoring in eight parallel chambers, thereby increasing the throughput compared to previously reported microdevices. © 2018 Tan et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. | Source Title: | PLoS ONE | URI: | https://scholarbank.nus.edu.sg/handle/10635/161229 | ISSN: | 19326203 | DOI: | 10.1371/journal.pone.0197101 | Rights: | Attribution 4.0 International |
Appears in Collections: | Staff Publications Elements |
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