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Merck
Bio-protocol (2021-03-04)
Gizem Altay, Eduard Batlle, Vanesa Fernández-Majada, Elena Martinez
ABSTRAKT

Developing protocols to obtain intestinal epithelial monolayers that recapitulate in vivo physiology to overcome the limitations of the organoids' closed geometry has become of great interest during the last few years. Most of the developed culture models showed physiological-relevant cell composition but did not prove self-renewing capacities. Here, we show a simple method to obtain mouse small intestine-derived epithelial monolayers organized into proliferative crypt-like domains, containing stem cells, and differentiated villus-like regions, closely resembling the in vivo cell composition and distribution. In addition, we adapted our model to a tissue culture format compatible with functional studies and prove close to physiological barrier properties of our in vitro epithelial monolayers. Thus, we have set-up a protocol to generate physiologically relevant intestinal epithelial monolayers to be employed in assays where independent access to both luminal and basolateral compartments is needed, such as drug absorption, intracellular trafficking and microbiome-epithelium interaction assays.

MATERIAŁY
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Sigma-Aldrich
Y-27632 dihydrochloride, ≥98% (HPLC)
Sigma-Aldrich
Collagenase from Clostridium histolyticum, for general use, Type I, ≥125 CDU/mg solid
Sigma-Aldrich
Penicillin-Streptomycin, with 10,000 units penicillin and 10 mg streptomycin per mL in 0.9% NaCl, 0.1 μm filtered, BioReagent, suitable for cell culture
Sigma-Aldrich
N-Acetyl-L-cysteine, BioReagent, suitable for cell culture
Sigma-Aldrich
Valproic acid sodium salt, 98%
Sigma-Aldrich
Phosphate buffered saline, powder, pH 7.4, for preparing 1 L solutions
Sigma-Aldrich
Ethylenediaminetetraacetic acid disodium salt solution, BioUltra, pH 8.0, ~0.5 M in H2O