Activación de la Traducción de ARNm por Moléculas Pequeñas mediante Reacción Click-to-Release en Células

Área de la Ciencia:

• Biochemistry
• Molecular Biology
• Chemical Biology

Sus antecedentes:

• Messenger RNA (mRNA) is a rapidly advancing medical technology.
• Controlling mRNA activity remains a challenge compared to other biologics.
• Bioorthogonal click-to-release reactions offer rapid uncaging of biomolecules in living systems.

Objetivo del estudio:

• To develop a novel method for controlling mRNA translation using bioorthogonal chemistry.
• To create a trans-cyclooctene (TCO)-modified mRNA cap for inducible uncaging.
• To demonstrate small-molecule-mediated translational activation of mRNA in mammalian cells.

Principales métodos:

• Synthesized a 5' cap modified with trans-cyclooctene (TCO-cap).
• Utilized bioorthogonal click-to-release reactions with hydroxyaryl-tetrazines for cap removal.
• Performed in vitro transcription and HPLC purification of TCO-capped mRNA.
• Assessed mRNA translation in mammalian cells (eGFP, luciferase) upon addition of tetrazine compounds.

Principales resultados:

• Developed a TCO-cap strategy compatible with in vitro transcription and mRNA purification.
• Demonstrated efficient release of the native cap0 via TCO-tetrazine reaction.
• Showed TCO-capped mRNAs are translationally muted until activated by cell-permeable tetrazines.
• Confirmed successful uncaging and translation of mRNA in mammalian cells.

Conclusiones:

• Presented a novel small-molecule-inducible mRNA translation system for eukaryotes.
• The TCO-cap strategy enables precise temporal control over mRNA activity.
• This approach has broad potential for therapeutic mRNA applications and research.