Abstract
Background: Growing world population and continuous disease emergence have invited the development of more efficient new vaccines against a range of diseases. Conventional vaccines are being wildly used in the world but their production requires higher cost, more time and better infrastructure. Thus, the idea of plant-based edible vaccine technology has emerged and showed promising results with strong and effective protection against many diseases. Plants have been utilized since more than two decades as pharmaceuticals against many diseases.
Methods: Plant-based technology has great potential to express genes and produce clinically important compounds in the desired tissue. Plant biotechnology has played important role in the production of pharmaceutical compounds like vaccines, antibodies, antigens, sub-units, growth hormones and enzymes by utilizing genetic modification. It has also been opened a new approach for developing an edible vaccine as an oral delivery.
Results: Edible vaccines have been shown to induce both mucosal as well as systemic immunity. Currently, many pharmaceuticals proteins as an edible vaccine have been developed in different plant expression systems and evaluated against various life-threatening diseases and some of them have reached advanced phase of the clinical trial and exhibited promising results.
Conclusion: In this review, we have discussed about the molecular pharming, edible vaccines, plant base technology and current status of developed edible vaccines in the different plant tissue expression system, mechanism of action and clinical applications with clinical trials stage, significance, requirements, advantage and disadvantage of edible vaccines.
Keywords: Plant-based edible vaccine, transgenic plant, immune response, molecular farming, infectious agents, human health.
Graphical Abstract
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