A High-Throughput Cell-Based Method to Predict the Unbound Drug Fraction in the Brain

作者：Mateus Andre; Matsson Par; Artursson Per^*

来源：Journal of Medicinal Chemistry, 2014, 57(7): 3005-3010.

DOI：10.1021/jm401963n

Optimization of drug efficacy in the brain requires understanding of the local exposure to unbound drug at the site of action. This relies on measurements of the unbound drug fraction (f(u,brain)), which currently requires access to brain tissue. Here, we present a novel methodology using homogenates of cultured cells for rapid estimation of f(u,brain). In our setup, drug binding to human embryonic kidney cell (HEK293) homogenate was measured in a small-scale dialysis apparatus. To increase throughput, we combined drugs into cassettes for simultaneous measurement of multiple compounds. Our method estimated f(u,brain) with an average error of 1.9-fold. We propose that our simple method can be used as an inexpensive, easily available and high-throughput alternative to brain tissues excised from laboratory animals. Thereby, estimates of unbound drug exposure can now implemented at a much earlier stage of the drug discovery process, when molecular property changes are easier to make.

• 出版日期2014-4-10
• 单位河北医科大学