Development of a Fast Screening Method for Selecting Excipients in Formulations using MD simulations, NMR and MicroScale Thermophoresis

Sowmya Indrakumar*, Matja Zalar, Nuska Tschammer, Christin Alina Pohl, Allan Nørgaard, Werner Streicher, Pernille Harris, Alexander P Golovanov, Günther H.J. Peters*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Development of peptide therapeutics generally involves screening of excipients that inhibit peptide-peptide interactions, hence aggregation, and improve peptide stability. We used the therapeutic peptide plectasin to develop a fast screening method that combines microscale thermophoresis titration assays and molecular dynamics simulations to relatively rank the excipients with respect to binding affinity and to study key peptide-excipient interaction hotspots on a molecular level, respectively. Additionally, 1H-13C-HSQC NMR titration experiments were performed to validate the fast screening approach. The NMR results are in qualitative agreement with results from the fast screening method demonstrating that this approach can be reliably applied to other peptides and proteins as a fast screening method to relatively rank excipients and predict possible excipient binding sites.

Original languageEnglish
JournalEuropean Journal of Pharmaceutics and Biopharmaceutics
ISSN0939-6411
DOIs
Publication statusAccepted/In press - 2020

Bibliographical note

Copyright © 2020. Published by Elsevier B.V.

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