Plant-Based Oral Vaccines: Molecular Biotechnology Approaches Toward Functional Food-Based Immunization.

Area of Science:

• Biotechnology
• Immunology
• Plant Science

Background:

• Plant-based oral vaccines represent a novel approach to immunotherapy.
• They utilize natural bioencapsulation within plant cell walls for antigen protection.
• This method offers a cost-effective and needle-free alternative to traditional vaccines.

Purpose of the Study:

• To evaluate the immunogenic potential of plant-derived antigens for oral vaccine development.
• To assess the stability and immune response elicited by antigens delivered via plant-based systems.
• To explore advanced technologies enhancing the efficacy of plant-based oral vaccines.

Main Methods:

• Utilizing plant cell walls for natural bioencapsulation and antigen preservation.
• Testing the structural integrity of plant-derived antigens after gastrointestinal exposure.
• Measuring mucosal IgA and systemic IgG responses in subjects.
• Employing technologies like chloroplast transformation and CRISPR/Cas9 for antigen production and design.

Main Results:

• Plant-derived antigens maintained structural integrity upon exposure.
• Robust mucosal IgA and systemic IgG immune responses were observed.
• Early trials demonstrated seroconversion (Hepatitis B) and significant mucosal immunity (CTB-producing plants).
• Advanced technologies like chloroplast transformation increased antigen yields significantly.

Conclusions:

• Plant-based oral vaccines show significant immunogenic potential and promise for immunization.
• The technology is particularly beneficial for resource-limited areas due to low cost and ease of administration.
• Further research into standardization and digestibility could enhance their widespread application.