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The changes in the neuronal PC12 and the intestinal epithelial Caco-2 cells during the coculture. The functional analysis using an in vitro coculture system.

Cytotechnology 2001 January
The interaction between intestinal epithelial cells andperipheral neuronal cells were examined using an invitro coculture system. Two cell lines, Caco-2 and PC12, were usedfor this experiment as an intestinal epithelial and entericneuronal cell model, respectively. By coculturing with fullydifferentiated Caco-2 cells, the neurite outgrowth was inducedin PC12 cells. This neurite outgrowth in PC12 was blocked byanti-nerve growth factor (NGF) polyclonal antibodies,suggesting that the neurite outgrowth in PC12 during thecoculture with Caco-2 cells was due to NGF secreted fromCaco-2 cells. On the other hand, coculturing with fullydifferentiated PC12 cells induced the decrease oftransepithelial electrical resistance in Caco-2 cellmonolayers. The permeability of lucifer yellow alsosignificantly increased, suggesting that the barrier functionand paracellular permeability of Caco-2 monolayers werealtered by coculturing with PC12 cells. The present studysuggests that this in vitro coculture system is a good modelfor the functional analysis of interaction among intestinalepithelial cells with different cell types.

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