Synthetic polycistronic sequences in eukaryotes.

Area of Science:

• Synthetic Biology
• Molecular Biology
• Biotechnology

Background:

• Co-expression of multiple genes is critical for engineering complex biological systems like metabolic pathways.
• Achieving coordinated, high-level, and stable expression of these genes presents a significant challenge.

Purpose of the Study:

• To evaluate and compare the functionality of IRES and 2A-peptide based constructs for gene co-expression.
• To analyze different strategies for achieving co-expression within polycistronic vectors.

Main Methods:

• Design and implementation of IRES- and 2A-peptide-based polycistronic vectors.
• Comparative analysis of gene expression levels and stability.
• Utilizing viral 2A sequences to mediate ribosome skipping for polyprotein processing.

Main Results:

• 2A peptides facilitate the generation of distinct proteins from a single open reading frame via ribosome skipping.
• Demonstrated the capability of 2A peptides to achieve co-regulated and reliable expression of multiple genes in eukaryotic cells.
• Comparison of different 2A-peptide strategies for optimizing polycistronic expression.

Conclusions:

• 2A-peptide based constructs offer a robust strategy for co-expressing multiple genes in synthetic gene circuits and metabolic engineering.
• These findings provide valuable insights for designing efficient polycistronic vectors in eukaryotic systems.