Plant viral vectors for delivery by Agrobacterium

Area of Science:

• Plant biotechnology
• Molecular biology
• Biopharmaceutical manufacturing

Background:

• Agrobacterium-mediated plant viral vectors are utilized for producing diverse proteins, including vaccine antigens and antibodies.
• The magnifection system, employing agrobacterial T-DNA transfer, is a key technology in this field.
• Recent progress includes second-generation vectors and scalable upstream manufacturing processes.

Purpose of the Study:

• To review advances in plant viral vector technology for protein production.
• To highlight the development of robust and scalable manufacturing processes.
• To showcase the application of these systems in research and clinical development.

Main Methods:

• Utilizing Agrobacterium to deliver viral replicons into plant leaves via vacuum infiltration.
• Employing viral machinery for massive RNA and protein production post T-DNA transfer.
• Leveraging established viral backbones like TMV, PVX, CPMV, and Bean yellow dwarf virus.

Main Results:

• Development of second-generation vectors using a 'deconstructed virus' approach.
• Establishment of scalable and robust upstream manufacturing processes.
• Successful production of antibodies and vaccine antigens currently in clinical trials.

Conclusions:

• Plant viral vectors offer a powerful platform for producing valuable biomolecules.
• Scalable manufacturing and advanced vector design facilitate industrial applications.
• This technology shows significant promise for vaccine and antibody development.