TY - JOUR A1 - Jede, Christian A1 - Henze, Laura J. A1 - Meiners, Kirstin A1 - Bogdahn, Malte A1 - Wedel, Marcel A1 - van Axel, Valeria T1 - Development and application of a dissolution-transfer-partitioning system (DTPS) for biopharmaceutical drug characterization JF - Pharmaceutics N2 - A variety of in vitro dissolution and gastrointestinal transfer models have been developed aiming to predict drug supersaturation and precipitation. Further, biphasic, one-vessel in vitro systems are increasingly applied to simulate drug absorption in vitro. However, to date, there is a lack of combining the two approaches. Therefore, the first aim of this study was to develop a dissolution-transfer-partitioning system (DTPS) and, secondly, to assess its biopredictive power. In the DTPS, simulated gastric and intestinal dissolution vessels are connected via a peristaltic pump. An organic layer is added on top of the intestinal phase, serving as an absorptive compartment. The predictive power of the novel DTPS was assessed to a classical USP II transfer model using a BCS class II weak base with poor aqueous solubility, MSC-A. The classical USP II transfer model overestimated simulated intestinal drug precipitation, especially at higher doses. By applying the DTPS, a clearly improved estimation of drug supersaturation and precipitation and an accurate prediction of the in vivo dose linearity of MSC-A were observed. The DTPS provides a useful tool taking both dissolution and absorption into account. This advanced in vitro tool offers the advantage of streamlining the development process of challenging compounds. KW - in vitro dissolution testing KW - in vitro dissolution methods KW - in vivo dissolution KW - oral drug absorption KW - oral bioavailability KW - gastrointestinal Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-311149 SN - 1999-4923 VL - 15 IS - 4 ER -