Evaluation of Time-Dependent Inhibition (TDI) of CYP3A4 by Peptide Therapeutics:A Comparison of Human Hepatocyte and Human Liver Microsome Assays

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May 29,2026

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With the rapid expansion of peptide and peptidomimetic therapeutics, evaluating their Drug-Drug Interaction (DDI) potential has become an essential part of drug development. Cytochrome P450 3A4 (CYP3A4) inhibition is a primary driver of clinical DDIs. While traditional linear peptides are generally metabolized by proteases and pose low CYP-mediated DDI risks, modified and cyclic peptides may interactwith CYP enzymes. This study aims to evaluate the CYP3A4 (using Midazolam as a specific substrate) direct and time-dependent inhibition (TDI) potential of a diverse panel of peptide therapeutics.

Evaluation-of-Time-Dependent-Inhibition-(TDI)-of-CYP3A4-by-Peptide-TherapeuticsA-Comparison-of-Human-Hepatocyte-and-Human-Liver-Microsome-Assays.jpg

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