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Updated: Jul 8, 2026

Evaluating the Immune Response of a Nanoemulsion Adjuvant Vaccine Against Methicillin-Resistant Staphylococcus aureus (MRSA) Infection

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Microalgal vaccines.

Surasak Siripornadulsil¹, Konrad Dabrowski, Richard Sayre

¹Department of Microbiology, Khon Kaen University, Thailand.

Advances in Experimental Medicine and Biology

|December 29, 2007

Summary

Microalgae-based vaccines offer a safe, cost-effective alternative to traditional animal-derived vaccines. These oral delivery systems are rapidly developed and scalable, avoiding pathogen transmission risks.

Area of Science:

Biotechnology
Vaccinology
Marine Biology

Background:

Traditional vaccines often rely on animal sources and injectable delivery, posing risks of pathogen transmission and requiring cold chains.
Non-animal alternatives are sought for rapid development, large-scale production, and reduced costs.
Oral vaccine delivery systems offer advantages in safety and ease of administration, particularly in resource-limited settings.

Purpose of the Study:

To develop and evaluate microalgae as a novel platform for vaccine delivery.
To demonstrate the efficacy of microalgal-based immunization systems in animal models.

Main Methods:

Recombinant antigens were expressed in the chloroplasts of microalgae or anchored to their surface.
Microalgae expressing antigens were used for oral immunization in fish and rabbits.

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Immunization efficacy was assessed in the target animal models.

Main Results:

Microalgal-based vaccines effectively immunized fish and rabbits.
Antigens expressed within chloroplasts or on the cell surface elicited immune responses.
Oral delivery of antigens via microalgae proved to be a safe and inexpensive immunization method.

Conclusions:

Microalgae represent a promising, non-animal-based platform for developing safe and cost-effective vaccines.
The microalgal vaccine delivery system is suitable for oral administration, enhancing applicability in diverse settings.
Further investigation into the applications of microalgal vaccines is warranted.