Volume 135, Issue 7 e202214815
Forschungsartikel

A Versatile Strategy for Screening Custom-Designed Warhead-Armed Cyclic Peptide Inhibitors

Deokhee Kang

Deokhee Kang

Department of Chemistry, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141 Korea

These authors contributed equally to this work.

Contribution: Conceptualization (equal), Data curation (equal), Methodology (equal), Validation (equal), Writing - original draft (equal)

Search for more papers by this author
Do-Wook Kim

Do-Wook Kim

Department of Chemistry, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141 Korea

These authors contributed equally to this work.

Contribution: Conceptualization (equal), Data curation (equal), Methodology (equal), Validation (equal), Writing - original draft (supporting)

Search for more papers by this author
Joo-Chan Kim

Joo-Chan Kim

Department of Chemistry, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141 Korea

Contribution: Formal analysis (supporting), Methodology (supporting), Visualization (supporting)

Search for more papers by this author
Prof. Hee-Sung Park

Corresponding Author

Prof. Hee-Sung Park

Department of Chemistry, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141 Korea

Contribution: Conceptualization (lead), Data curation (lead), Formal analysis (lead), Funding acquisition (lead), ​Investigation (lead), Project administration (lead), Resources (lead), Supervision (lead), Validation (lead), Writing - original draft (lead), Writing - review & editing (lead)

Search for more papers by this author
First published: 19 December 2022

Abstract

Demand for peptide-based pharmaceuticals has been steadily increasing, but only limited success has been achieved to date. To expedite peptide-based drug discovery, we developed a general scheme for cell-based screening of cyclic peptide inhibitors armed with a user-designed warhead. We combined unnatural amino acid incorporation and split intein-mediated peptide cyclization techniques and integrated a yeast-based colorimetric screening assay to generate a new scheme that we call the custom-designed warhead-armed cyclic peptide screening platform (CWCPS). This strategy successfully discovered a potent inhibitor, CY5-6Q, that targets human histone deacetylase 8 (HDAC8) with a KD value of 15 nM. This approach can be a versatile and general platform for discovering cyclic peptide inhibitors.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the Supporting Information of this article.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.