The gut epithelium is generally impermeable, but Peyer's patches (PP) feature specialized follicle-associated epithelium (FAE) with M cells for antigen transport.
M cells are crucial for initiating immune responses and antigen sampling in the gut.
Purpose of the Study:
To establish a reproducible in vitro model of FAE and M cells.
To investigate the functional characteristics of this M cell model.
Main Methods:
Culturing PP lymphocytes with the differentiated human intestinal Caco-2 cell line.
Observing lymphocyte interaction with the epithelial monolayer.
Assessing particle and bacterial transport.
Main Results:
A system mimicking FAE and M cell characteristics was successfully established.
Lymphocytes induced epithelial reorganization, including brush border changes.
Temperature-dependent transport of particles and Vibrio cholerae was observed.
Conclusions:
The developed model effectively replicates key FAE and M cell functions.
This system is a valuable tool for studying intestinal physiology.
Potential applications include vaccine research and drug delivery studies.