The potential of N2-modified cap analogues for precise genetic manipulation through mRNA engineering

Area of Science:

• Medicinal Chemistry
• Molecular Biology
• Drug Discovery

Background:

• Messenger RNA (mRNA) technology is rapidly advancing, with current applications in viral vaccines and potential for diverse diseases.
• The 5' cap structure of mRNA critically influences its translational efficiency and stability.
• Modifications to the mRNA cap can significantly alter its biological properties.

Purpose of the Study:

• To synthesize novel cap analogues of 7-methylguanosine modified at the N2 position.
• To explore derivatives with varied modifications, including triphosphate chain extension, thiophosphate, cap1 nucleotide addition, and linker variations.
• To evaluate the synthesized compounds as potential translation inhibitors and components for mRNA preparation.

Main Methods:

• Chemical synthesis of modified 7-methylguanosine cap analogues.
• Incorporation of diverse modifications: extended triphosphate chains, thiophosphate, cap1 nucleotide, and varied linkers.
• Functional assessment of synthesized compounds for translation inhibition and mRNA component utility.

Main Results:

• Successful synthesis of N2-modified 7-methylguanosine cap analogue derivatives.
• Demonstrated potential of these derivatives as translation inhibitors.
• Showcased utility of the synthesized compounds in mRNA preparation.

Conclusions:

• Novel mRNA cap analogues with N2 modifications on 7-methylguanosine were synthesized.
• These modified caps hold promise for therapeutic applications, including as translation inhibitors.
• The developed compounds are valuable for advancing mRNA technology and drug development.