[DNA Vaccine Technologies: Design and Delivery]

Area of Science:

• Vaccinology
• Molecular Biology
• Immunology

Background:

• The COVID-19 pandemic accelerated vaccine development, highlighting DNA and mRNA technologies.
• DNA vaccines are noted for their stability, cost-effectiveness, and ability to induce broad immune responses.

Purpose of the Study:

• To review the principles of plasmid DNA vaccine construction.
• To explore novel DNA construct technologies and delivery methods for vaccines.

Main Methods:

• Review of existing literature on DNA vaccine development.
• Analysis of new DNA construct types (minicircular DNA, MIDGE DNA, Doggybone DNA).
• Evaluation of chemical and physical DNA vaccine delivery systems.

Main Results:

• DNA vaccine production is rapid (2-4 weeks) and cost-effective, avoiding dangerous pathogens.
• New DNA constructs lack non-essential bacterial sequences, focusing on immune activation.
• Various chemical and physical delivery methods are effective for DNA vaccines.

Conclusions:

• DNA vaccine technology is rapidly evolving with a licensed COVID-19 vaccine and numerous candidates in trials.
• Novel DNA constructs and advanced delivery systems show significant promise for future vaccine development.
• DNA vaccines represent a key advancement in preventing viral and bacterial diseases.