Retinoids Molecular Probes by Late-stage Azide Insertion - Functional Tools to Decrypt Retinoid Metabolism.

Area of Science:

• Chemical Biology
• Molecular Probes
• Metabolic Pathways

Background:

• Studying retinoid metabolism requires specialized molecular probes.
• Existing probes often lack structural similarity to natural retinoids.
• A need exists for close-to-native retinoid probes.

Purpose of the Study:

• To develop a versatile method for synthesizing biologically functional retinoid probes.
• To create probes with azide functionality for chemical biology applications.
• To enable detailed studies of retinoid and carotenoid metabolism.

Main Methods:

• Developed a late-stage method for inserting azide function at the C4 position of retinoids.
• Synthesized various retinoid and carotenoid probes from commercial precursors.
• Validated probe biological activity and gene transcription activation.

Main Results:

• A straightforward one-step synthesis for azide-functionalized retinoid probes was established.
• The synthesized probes retained the transcriptional activation ability of the parent compounds.
• In vivo validation in a zebrafish model confirmed biological activity.

Conclusions:

• The developed method provides access to close-to-native retinoid probes.
• Azide insertion does not abolish the biological activity of retinoids.
• This work facilitates future research into vitamin A metabolism and related pathways.