1. Chemical probes for the identification of the molecular targets of honokiol.
- Author
-
Vázquez-Villa H, Rueda-Zubiaurre A, Fernández D, Foronda R, Parker CG, Cravatt BF, Martín-Fontecha M, and Ortega-Gutiérrez S
- Subjects
- Humans, Molecular Structure, Molecular Probes chemistry, Molecular Probes chemical synthesis, Molecular Probes pharmacology, Structure-Activity Relationship, Dose-Response Relationship, Drug, Proteomics, Antineoplastic Agents pharmacology, Antineoplastic Agents chemistry, Antineoplastic Agents chemical synthesis, Cell Line, Tumor, Allyl Compounds, Phenols, Lignans pharmacology, Lignans chemistry, Lignans chemical synthesis, Biphenyl Compounds pharmacology, Biphenyl Compounds chemistry, Biphenyl Compounds antagonists & inhibitors
- Abstract
Honokiol is a natural product with an interesting array of biological effects, including significant anti-tumor properties. However, full exploration of its therapeutic potential is hampered by its modest pharmacokinetic profile and by the lack of synthetic methods that allow to obtain specifically designed derivatives with improved properties. In addition, the specific molecular targets of honokiol remain poorly understood, a fact that limits the search of alternative hits for subsequent optimization programs. In this work we describe an optimized series of synthetic routes that allow to access to a variety of honokiol derivatives, including a set of minimalist photoaffinity probes to map potential protein targets in live cells. Chemical proteomic studies of the most potent probe revealed a defined set of proteins as the cellular targets of honokiol. Significantly, up to the 62 % of the identified proteins have described roles in cancer, highlighting their potential relationship with the antitumor effects of honokiol. Furthermore, several of the top hits have been validated as direct binding partners of honokiol by cellular thermal shift assay (CETSA). In sum, the work described herein provides the first landscape of the cellular targets of honokiol in living cells and contributes to define the specific molecular pathways affected by this natural product., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Silvia Ortega-Gutierrez reports financial support was provided by Ministerio de Ciencia e Innovacion. Daniel Fernandez reports financial support was provided by Comunidad de Madrid. Benjamin F. Cravatt reports financial support was provided by National Institutes of Health. Roman Foronda reports financial support was provided by Comunidad de Madrid. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Authors. Published by Elsevier Masson SAS.. All rights reserved.)
- Published
- 2025
- Full Text
- View/download PDF