Permeability of Hydrophilic Investigations of the integrity and transport characteristics of 2/4/A1 cells have been done in this report. The cell line was isolated from rat fetal intestinal epithelial cells and transfected with thermolabile SV40 large T antigen. These cells proliferated at 33 °C, but eliminated the antigen and ceased proliferating at a non-permissive temperature (39°C). At 39°C 2/4/A1 cells started to differentiate but simultaneously the cells also underwent massive cell death. When cultured at 37°C these cells formed confluent and tight monolayers that seemed to have paracellular transport characteristics similar to that of the human intestine. Transmission electron microscopy confirmed the development of multilayers at 33°C, monolayers at 37°C and defects in the cell layer due to apoptosis at 39°C. Different immunostainings of ZO-1, E-cadherin and vinculin confi....

Number Of Pages: 13

Number Of Words: 3402

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