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Challenges in developing mucosal vaccines and antibodies against infectious diarrhea in children
1Department of Pediatrics, Osaka City University Graduate School of Medicine, Abenoku, Osaka, Japan.
Insights
Developing effective mucosal vaccines for children is crucial for combating infectious diarrhea. Rice-based oral vaccines offer a promising, cost-effective solution for mucosal immunity and disease prevention.
Area of Science:
- Pediatric infectious diseases
- Vaccinology
- Biotechnology
Background:
- Infectious diarrhea in children poses significant health and economic challenges.
- Mucosal immunity is ideal for controlling gastrointestinal pathogens.
- Mucosal vaccines offer superior protection compared to systemic vaccines.
Purpose of the Study:
- To review the current understanding of the mucosal immune system.
- To explore the development of mucosal vaccines and therapeutic antibodies.
- To highlight advancements in rice-based oral vaccine technology for pediatric applications.
Main Methods:
- Review of scientific literature on mucosal immunity and vaccine development.
- Focus on plant genetic engineering, specifically rice biotechnology.
- Analysis of rice-based oral subunit vaccines and antibodies.
Main Results:
- Plant genetic engineering enables cost-effective production of recombinant vaccine antigens.
- Rice-based oral vaccines against Vibrio cholerae have been developed.
- Rice-based oral antibodies show potential for rotavirus gastroenteritis prophylaxis and treatment.
Conclusions:
- Mucosal vaccines, particularly rice-based oral formulations, represent a significant advancement.
- This technology offers a cold-chain-free and accessible approach to pediatric infectious diarrhea prevention.
- Future prospects for rice-based mucosal vaccines in children are promising.
Abstract:
Infectious diarrhea in children can be life-threatening and imposes a large economic burden on healthcare systems, therefore more effective prophylactic and therapeutic drugs are needed urgently. Because most of the pathogens responsible for childhood diarrhea infect the gastrointestinal mucosa, providing protective immunity at the mucosal surface is an ideal way to control pathogen invasion and toxic activity. Mucosal (e.g. oral, nasal) vaccines are superior to systemic (subcutaneous or intramuscular) vaccination for conferring both mucosal and systemic pathogen-specific immune responses. Therefore, great efforts has been focused on the development of cost-effective mucosal vaccines for the past 50 years. Recent progress in plant genetic engineering has revolutionized the production of inexpensive and safe recombinant vaccine antigens. For example, rice plant biotechnology has facilitated the development of a cold-chain-free rice-based oral subunit vaccine against Vibrio cholerae. Furthermore, this technology has led to the creation of a rice-based oral antibody for prophylaxis and treatment of rotavirus gastroenteritis. This review summarizes current perspectives regarding the mucosal immune system and the development of mucosal vaccines and therapeutic antibodies, particularly rice-based products, and discusses future prospects regarding mucosal vaccines for children.
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