Nutrients
and many medications enter the body through the gastrointestinal epithelium,
which is a one-of-a-kind route. The goal of this work was to see if
co-culturing two colon cancer cell lines, HT29-MTX mucus-producing cells and
Caco-2 enterocyte-like cells, improved differentiation into a functioning in
vitro intestinal barrier model. Real-time studies, immunochemistry, and gene
expression analysis on Caco-2 vs co-cultures of Caco-2 and HT29-MTX (10%) cells
were used to validate the findings. The partial preservation of cancer-cell
phenotype in differentiated Caco-2 cells was confirmed, and fatty acids were
grouped together as putative cancer signalling regulators. HT29-MTX cells
caused morphological changes in Caco-2 cells, increased their proliferation
rate slightly, and significantly altered gene transcription of phenotype
markers, fatty acid receptors, intracellular transporters, and lipid droplet
components, as well as their functional responses to oleic acid. In vitro,
co-culture of cancer cells with goblet cells partially restored enterocyte
phenotype, which was completed by oleic acid interaction with cancer cell
signalling pathways. The lipid transport of a rebuilt gastrointestinal
epithelium was studied. The ability of adipose tissue to regulate lipemia is
strongly reliant on nutrition absorption in the intestine. adipocytes as lipid
sensors for absorption The rebuilt intestinal barrier was pre-absorbed with
oleic acid (OA). With partially differentiated 3T3L1-MBX adipocytes detecting
up to 5 M OA in solution or 40 M OA pre-absorbed by Caco2/HT29-MTX intestinal
barriers, optimised experimental conditions for co-culture with intestinal
barriers were obtained. The ability to accumulate TG in adipocytes was
substantially impacted by metabolism, particularly glycemia and insulinemia.
The current study shows that Caco2/HT29-MTX intestinal barriers operate
substantially better for fatty acid uptake and release than Caco-2 intestinal
barriers. These findings, taken collectively, open up new avenues for research.
Author (S) Details
Emmanuelle Berger
University of Lyon, UMR Ecologie Microbienne Lyon (LEM), CNRS 5557, INRAE
1418, Université Claude Bernard Lyon 1, VetAgro Sup, Research Team “Bacterial
Opportunistic Pathogens and Environment” (BPOE), 69622 Villeurbanne, France.
Research Director, Alain Géloën
University of Lyon, UMR Ecologie Microbienne Lyon (LEM), CNRS 5557, INRAE
1418, Université Claude Bernard Lyon 1, VetAgro Sup, Research Team “Bacterial
Opportunistic Pathogens and Environment” (BPOE), 69622 Villeurbanne, France.
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