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Design of a Potent TLX Agonist by Rational Fragment Fusion
Giuseppe Faudone1, Rezart Zhubi1,2, Fatih Celik1
1Institute of Pharmaceutical Chemistry, Goethe University Frankfurt, D-60438 Frankfurt, Germany.
Abstract:
As a master regulator of neurogenesis, the orphan nuclear receptor tailless homologue (TLX, NR2E1) maintains neuronal stem cell homeostasis by acting as a transcriptional repressor of tumor suppressor genes. It is hence considered as an appealing target for the treatment of neurodegenerative diseases, but a lack of potent TLX modulators as tools to probe pharmacological TLX control hinders further validation of its promising potential. Here, we report the development of a potent TLX agonist based on fragment screening, pharmacophore modeling, and fragment fusion. Pharmacophore similarity of a fragment screening hit and the TLX ligand ccrp2 provided a rational basis for fragment linkage, which resulted in several TLX activator scaffolds. Among them, the fused compound 10 evolved as a valuable TLX agonist tool with submicromolar potency and high selectivity over related nuclear receptors, rendering it suitable for functional studies on TLX.
Insights
Researchers developed a potent TLX agonist, a crucial tool for studying neurodegenerative diseases. This new compound selectively targets tailless homologue (TLX) to advance potential treatments.
Area of Science:
- Neuroscience
- Molecular Biology
- Pharmacology
Background:
- The orphan nuclear receptor tailless homologue (TLX, NR2E1) is a master regulator of neurogenesis.
- TLX maintains neuronal stem cell homeostasis by repressing tumor suppressor genes.
- TLX is a potential therapeutic target for neurodegenerative diseases, but lacks potent modulators for research.
Purpose of the Study:
- To develop a potent and selective TLX agonist as a tool for pharmacological studies.
- To validate the potential of TLX as a therapeutic target for neurodegenerative diseases.
Main Methods:
- Fragment screening and pharmacophore modeling were employed.
- Fragment linkage and fusion strategies were utilized to design TLX modulators.
- Compound 10 was identified as a potent TLX agonist.
Main Results:
- A novel TLX agonist, compound 10, was successfully developed.
- Compound 10 exhibits submicromolar potency and high selectivity for TLX.
- The developed agonist is suitable for functional studies on TLX.
Conclusions:
- The developed TLX agonist represents a valuable tool for investigating TLX function in neurogenesis and neurodegenerative diseases.
- This research facilitates further validation of TLX as a therapeutic target.
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