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Implementation of In Vitro Drug Resistance Assays: Maximizing the Potential for Uncovering Clinically Relevant Resistance Mechanisms
Published on: December 9, 2015
In vitro methods to support transporter evaluation in drug discovery and development
K L R Brouwer1, D Keppler, K A Hoffmaster
1Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA. kbrouwer@unc.edu
This white paper reviews methods for assessing drug transporter roles in human drug disposition. It highlights in vitro tools and their use in predicting drug-drug interactions (DDIs) and understanding drug metabolism.
Area of Science:
- Pharmacology and Drug Metabolism
- Biotechnology and Pharmaceutical Sciences
Background:
- Drug disposition in humans is significantly influenced by various transport proteins.
- Understanding transporter roles is crucial for effective drug development and predicting drug-drug interactions (DDIs).
Purpose of the Study:
- To review current methodologies for assessing the impact of transport proteins on drug and metabolite disposition.
- To identify knowledge gaps in existing assessment methods for drug development.
- To explore the utility of in vitro systems in predicting transporter-mediated DDIs.
Main Methods:
- Discussion of in vitro tools, including vesicle- and cell-based systems.
- Analysis of approaches to evaluate transporter involvement in drug disposition.
- Exploration of methods to assess liability for transporter-based DDIs.
Main Results:
- Current in vitro systems offer valuable insights into transporter function and drug disposition.
- Challenges remain in fully predicting in vivo transporter effects and DDIs from in vitro data.
- Vesicle- and cell-based assays are key tools for interrogating transporter roles.
Conclusions:
- In vitro methods are essential for evaluating drug transporter contributions to disposition and DDIs.
- Further refinement of assessment strategies is needed to bridge the gap between in vitro findings and in vivo outcomes.
- Addressing knowledge gaps will enhance the predictive power of transporter studies in drug development.
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