2019
DOI: 10.1039/c8lc00129d
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Non-invasive sensing of transepithelial barrier function and tissue differentiation in organs-on-chips using impedance spectroscopy

Abstract: Combining impedance spectroscopy with electrical simulation to reveal transepithelial barrier function and tissue structure of human intestinal epithelium cultured in an organ-on-chip.

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Cited by 130 publications
(132 citation statements)
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“…We note that 3D astrocyte-laden hydrogel in the lower channel prevents electrodes from being coated along the bottom hydrogel channel as reported in recent studies 22,54 . We also note that the TEER values measured in our current study can be affected by the uneven distribution of the potential across the membrane and may not indicate the accurate values of the cell layer resistance as reported in recent studies [55][56][57] . The TEER values measured in this study thus were simply used to compare the barrier integrity between the EC only and the BBB models in the same device for the purpose of cross-validation of permeability coefficient analysis.…”
Section: Discussioncontrasting
confidence: 72%
“…We note that 3D astrocyte-laden hydrogel in the lower channel prevents electrodes from being coated along the bottom hydrogel channel as reported in recent studies 22,54 . We also note that the TEER values measured in our current study can be affected by the uneven distribution of the potential across the membrane and may not indicate the accurate values of the cell layer resistance as reported in recent studies [55][56][57] . The TEER values measured in this study thus were simply used to compare the barrier integrity between the EC only and the BBB models in the same device for the purpose of cross-validation of permeability coefficient analysis.…”
Section: Discussioncontrasting
confidence: 72%
“…These include models such as immortalized 2D cell lines, 3D spheroids, and tissue-on-a-chip for the reconstructed human epidermis and intestine. Future work will include investigation and optimization of fluidic cycles (e.g., by increasing the stabilization time before the test substance is added) and the electrode geometry, and collection of spectrometric information (Gilbert et al, 2019;van der Helm et al, 2019), to create a versatile tissue-on-a-chip tool that can also be applied to lung or other mucous cell models.…”
Section: Resultsmentioning
confidence: 99%
“…During the last decade, these findings have led to the massive efforts regarding the development of microfluidic organs-on-a-chip mimicking the entire human body [148,149]; in fact, at least one microfluidic-based model has been made to reproduce lung [147,[150][151][152], gut [153][154][155][156][157], brain [158][159][160], eye [161,162], skin [163,164], liver [165][166][167][168], kidney [169,170], pancreas [171,172], adipose tissue [173,174], and heart [175][176][177] (Figure 5). An overview of all these organs-on-a-chip is beyond the scope of the present review, but we want to focus on some examples related to their application to toxicology.…”
Section: Organs- Organoids-on-a-chip and 3d Printingmentioning
confidence: 99%