Caco-2 monolayers in experimental and theoretical predictions of drug transport

• This review examines the use of Caco-2 monolayers in the prediction of intestinal drug absorption. First, the different routes of drug transport in Caco-2 monolayers are compared with those seen in vivo. Second, the prediction of drug absorption in vivo from transport experiments in cell monolayers is discussed for different classes of drugs. Finally, the use of Caco-2 monolayers as a reference model in physico-chemical and theoretical predictions of drug absorption is discussed. We conclude that Caco-2 monolayers can be used to identify drugs with potential absorption problems, and possibly also to select drugs with optimal passive absorption characteristics from series of pharmacologically active molecules generated in drug discovery programs.

Nyckelord

Drug transport

Drug absorption

Intestinal epithelium

Caco-2

Cell monolayer

Partition coefficient

Hydrogen bonding potential

Desolvation energy

Molecular surface area

In vitro-in vivo correlation

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