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Probing Embryonic Development Enables the Discovery of Unique Small-Molecule Bone Morphogenetic Protein Potentiators
Fabian Wesseler1,2,3, Daniel Riege3, Mahesh Puthanveedu1,4
1Faculty of Chemistry and Chemical Biology, Technical University Dortmund, Otto-Hahn-Strasse 6, 44227 Dortmund, Germany.
Journal of Medicinal Chemistry
|February 2, 2022
Summary
This study presents a new method to discover bone morphogenetic protein (BMP) activators using embryonic stem cell development. A chemical screen identified potent BMP-activating compounds with potential in regenerative medicine and stem cell biology.
Area of Science:
- Biochemistry
- Developmental Biology
- Stem Cell Biology
Background:
- Embryonic development involves complex signaling pathways, including bone morphogenetic protein (BMP) signaling.
- Identifying small molecules that modulate these pathways is crucial for regenerative medicine and understanding developmental processes.
- Current methods for discovering such molecules can be limited in scope or specificity.
Purpose of the Study:
- To develop and validate a high-throughput screening assay for identifying small-molecule BMP activators.
- To discover novel chemotypes that selectively modulate BMP signaling during embryonic stem cell differentiation.
- To explore the therapeutic potential of identified compounds in regenerative medicine.
Main Methods:
- A phenotypic, target-agnostic, high-throughput assay was developed to probe BMP signaling in differentiating embryonic stem cells.
- The assay leverages temporal discrimination of cardiomyogenesis stages driven by BMP and transforming growth factor-beta (TGFβ).
- A chemical library of 7000 compounds was screened, followed by hit validation and mechanistic studies.
Main Results:
- The screen identified 2,3-disubstituted 4H-chromen-4-ones as potent BMP potentiators with osteogenic efficacy.
- Compound Chromenone 1 was shown to enhance canonical BMP outputs selectively over TGFβ-Smad signaling.
- Pharmacophoric features of the identified compounds were defined, yielding novel chemical probes.
Conclusions:
- Harnessing in vitro embryonic development provides a feasible platform for discovering small-molecule cytokine mimetics and signaling activators.
- The identified chromenone derivatives represent a novel class of BMP pathway modulators with significant potential.
- These findings offer new tools for stem cell biology, regenerative medicine, and basic BMP pathway research.
