Review Version 1 Preserved in Portico This version is not peer-reviewed
In Vitro Methods for Measuring the Permeability of Cell Monolayers
Version 1 : Received: 30 December 2021 / Approved: 5 January 2022 / Online: 5 January 2022 (10:31:50 CET)
A peer-reviewed article of this Preprint also exists.
Bednarek, R. In Vitro Methods for Measuring the Permeability of Cell Monolayers. Methods Protoc. 2022, 5, 17. Bednarek, R. In Vitro Methods for Measuring the Permeability of Cell Monolayers. Methods Protoc. 2022, 5, 17.
Cell monolayers, including endothelial and epithelial cells, play crucial roles in regulating the transport of biomolecules to underlying tissues and structures via intercellular junctions. Moreover, the monolayers form a semipermeable barrier across which leukocyte transmigration is tightly regulated. The inflammatory cytokines can disrupt the epithelial and endothelial permeability, thus the reduced barrier integrity is a hallmark of epithelial and endothelial dysfunction related with numerous pathological conditions, including cancer-related inflammation. Therefore, the assessment of barrier function is critical in in vitro models of barrier-forming tissues. This review summarizes the commercially available in vitro systems used to measure the permeability of cellular monolayers. The presented techniques are separated in two large groups: macromolecular tracer flux assays, and electrical impedance measurement-based permeability assays. The presented techniques are briefly described and compared.
permeability; endothelium; epithelium; dysfunction; transendothelial resistance; fluorescent tracer; microfluidics
LIFE SCIENCES, Cell & Developmental Biology
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