Remodelin Is a Cryptic Assay Interference Chemotype That Does Not Inhibit NAT10-Dependent Cytidine Acetylation

Jonathan H. Shrimp, Yihang Jing, Supuni Thalalla Gamage, Kathryn M. Nelson, Joseph Han, Keri M. Bryson, David C. Montgomery, Justin M. Thomas, Kellie D. Nance, Sunny Sharma, Stephen D. Fox, Thorkell Andressen, Wilson R. Sinclair, Hong Wu, Abdellah Allali-Hassani, Guillermo Senisterra, Masoud Vedadi, Denis Lafontaine, Jayme L. Dahlin, Ronen MarmorsteinMichael A Walters, Jordan L. Meier

Research output: Contribution to journalArticle

Abstract

Remodelin is a putative small molecule inhibitor of the RNA acetyltransferase NAT10 which has shown preclinical efficacy in models of the premature aging disease Hutchinson-Gilford Progeria Syndrome (HGPS). Here we evaluate remodelin's assay interference characteristics and effects on NAT10-catalyzed RNA cytidine acetylation. We find the remodelin chemotype constitutes a cryptic assay interference compound, which does not react with small molecule thiols but demonstrates protein reactivity in ALARM NMR and proteome-wide affinity profiling assays. Biophysical analyses find no direct evidence for interaction of remodelin with the NAT10 acetyltransferase active site. Cellular studies verify that N4-acetylcytidine (ac4C) is a nonredundant target of NAT10 activity in human cell lines and find that this RNA modification is not affected by remodelin treatment in several orthogonal assays. These studies display the potential for remodelin's chemotype to interact with multiple protein targets in cells and indicate remodelin should not be applied as a specific chemical inhibitor of NAT10-catalyzed RNA acetylation.

Original languageEnglish (US)
JournalACS Medicinal Chemistry Letters
DOIs
StateAccepted/In press - 2020

Keywords

  • Acetyltransferase
  • chemical probes
  • Hutchinson-Gilford Progeria Syndrome
  • NAT10
  • pan-assay interference
  • RNA modification

Fingerprint Dive into the research topics of 'Remodelin Is a Cryptic Assay Interference Chemotype That Does Not Inhibit NAT10-Dependent Cytidine Acetylation'. Together they form a unique fingerprint.

  • Cite this

    Shrimp, J. H., Jing, Y., Gamage, S. T., Nelson, K. M., Han, J., Bryson, K. M., Montgomery, D. C., Thomas, J. M., Nance, K. D., Sharma, S., Fox, S. D., Andressen, T., Sinclair, W. R., Wu, H., Allali-Hassani, A., Senisterra, G., Vedadi, M., Lafontaine, D., Dahlin, J. L., ... Meier, J. L. (Accepted/In press). Remodelin Is a Cryptic Assay Interference Chemotype That Does Not Inhibit NAT10-Dependent Cytidine Acetylation. ACS Medicinal Chemistry Letters. https://doi.org/10.1021/acsmedchemlett.0c00193