PMID- 34452364 OWN - NLM STAT- MEDLINE DCOM- 20220202 LR - 20220202 IS - 1999-4915 (Electronic) IS - 1999-4915 (Linking) VI - 13 IP - 8 DP - 2021 Jul 29 TI - Exosome-Based Vaccines: Pros and Cons in the World of Animal Health. LID - 10.3390/v13081499 [doi] LID - 1499 AB - Due to the emergence of antibiotic resistance and new and more complex diseases that affect livestock animal health and food security, the control of epidemics has become a top priority worldwide. Vaccination represents the most important and cost-effective measure to control infectious diseases in animal health, but it represents only 23% of the total global animal health market, highlighting the need to develop new vaccines. A recent strategy in animal health vaccination is the use of extracellular vesicles (EVs), lipid bilayer nanovesicles produced by almost all living cells, including both prokaryotes and eukaryotes. EVs have been evaluated as a prominent source of viral antigens to elicit specific immune responses and to develop new vaccination platforms as viruses and EVs share biogenesis pathways. Preliminary trials with lymphocytic choriomeningitis virus infection (LCMV), porcine reproductive and respiratory syndrome virus (PRRSV), and Marek's disease virus (MDV) have demonstrated that EVs have a role in the activation of cellular and antibody immune responses. Moreover, in parasitic diseases such as Eimeria (chickens) and Plasmodium yoelii (mice) protection has been achieved. Research into EVs is therefore opening an opportunity for new strategies to overcome old problems affecting food security, animal health, and emerging diseases. Here, we review different conventional approaches for vaccine design and compare them with examples of EV-based vaccines that have already been tested in relation to animal health. FAU - Montaner-Tarbes, Sergio AU - Montaner-Tarbes S AD - Innovex Therapeutics SL, 08916 Badalona, Spain. FAU - Fraile, Lorenzo AU - Fraile L AUID- ORCID: 0000-0002-8980-5862 AD - Agrotecnio Center, Department of Animal Science, University of Lleida, 25198 Lleida, Spain. FAU - Montoya, Maria AU - Montoya M AUID- ORCID: 0000-0002-5703-7360 AD - Centro de Investigaciones Biologicas Margarita Salas (CIB-CSIC), Ramiro de Maeztu 9, 29040 Madrid, Spain. FAU - Del Portillo, Hernando AU - Del Portillo H AD - Innovex Therapeutics SL, 08916 Badalona, Spain. AD - ICREA at ISGlobal, Barcelona Institute for Global Health and IGTP, German Trias I Pujol Health Research Institute, 08916 Badalona, Spain. LA - eng PT - Journal Article PT - Review DEP - 20210729 PL - Switzerland TA - Viruses JT - Viruses JID - 101509722 RN - 0 (Viral Vaccines) SB - IM MH - Animals MH - Chickens/immunology MH - Exosomes/genetics/*immunology MH - Herpesvirus 2, Gallid/immunology MH - Poultry Diseases/classification/immunology/prevention & control MH - Swine/immunology MH - Swine Diseases/classification/immunology/prevention & control MH - Vaccination/*veterinary MH - Viral Vaccines/administration & dosage/genetics/*immunology MH - Virus Diseases/immunology/*prevention & control/*veterinary PMC - PMC8402771 OTO - NOTNLM OT - extracellular vesicles OT - vaccines OT - viral diseases COIS- S.M.-T. is an employee of Innovex Therapeutics S.L. (ITSL). M.M., L.F. and H.D.P. are ITSL shareholders. EDAT- 2021/08/29 06:00 MHDA- 2022/02/03 06:00 PMCR- 2021/07/29 CRDT- 2021/08/28 01:06 PHST- 2021/05/21 00:00 [received] PHST- 2021/07/26 00:00 [revised] PHST- 2021/07/27 00:00 [accepted] PHST- 2021/08/28 01:06 [entrez] PHST- 2021/08/29 06:00 [pubmed] PHST- 2022/02/03 06:00 [medline] PHST- 2021/07/29 00:00 [pmc-release] AID - v13081499 [pii] AID - viruses-13-01499 [pii] AID - 10.3390/v13081499 [doi] PST - epublish SO - Viruses. 2021 Jul 29;13(8):1499. doi: 10.3390/v13081499.