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- W2897130221 abstract "Abstract Cell polarization using Transwell is a common method employed to study renal tubular epithelial cells. However, this conventional protocol does not precisely recapitulate renal tubular epithelial cell phenotypes. In this study, we simulated renal physiological microenvironment by replacing serum-containing culture medium in upper chamber of the Transwell with physiologic artificial urine (AU) (to mimic renal tubular fluid), whereas the lower chamber still contained serum-containing medium (to mimic plasma-enriched renal interstitium). Comparing to the conventional protocol (control), the AU-assisted protocol offered more complete polarization of MDCK renal tubular cells as indicated by higher transepithelial electrical resistance (TER) and greater levels of tight junction (TJ) proteins (ZO-1 and occludin). Transmission electron microscopy (TEM) showed greater densities of TJ and desmosome, narrower intercellular spaces, greater cell height, and longer microvilli in the AU-treated cells. Secretome analysis revealed that the AU-treated cells secreted greater proportion of the proteins matched to normal human urinary proteome via both classical and non-classical secretory pathways. Finally, modifying/omitting each component of AU (one at a time) followed by validation revealed that urea was responsible for such property of AU to improve cell polarization. These data indicate that replacing AU on the upper chamber of Transwell can improve or optimize renal cell polarization for more precise investigations of renal physiology and cell biology in vitro." @default.
- W2897130221 created "2018-10-26" @default.
- W2897130221 creator A5047165949 @default.
- W2897130221 creator A5086538790 @default.
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- W2897130221 date "2018-10-10" @default.
- W2897130221 modified "2023-10-15" @default.
- W2897130221 title "More complete polarization of renal tubular epithelial cells by artificial urine" @default.
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- W2897130221 doi "https://doi.org/10.1038/s41420-018-0112-z" @default.
- W2897130221 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6180081" @default.
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