PMID- 37503102 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240226 DP - 2023 Jul 18 TI - A parainfluenza virus 5 (PIV5)-vectored intranasal vaccine for Lyme disease provides long-lasting protection against tick transmitted Borrelia burgdorferi in mice. LID - rs.3.rs-3143132 [pii] LID - 10.21203/rs.3.rs-3143132/v1 [doi] AB - Lyme disease (LD) is the most prevalent vector borne disease in North America and Europe and its geographic range continues to expand. Strategies for disease control are necessary to effectively reduce incidence of LD including development of safe vaccines for human use. Parainfluenza virus 5 (PIV5) vector has an excellent safety record in animals and PIV5-vectored COVID-19 and RSV vaccines are currently under clinical development. We constructed PIV5-vectored LD vaccine candidates expressing OspA from B. burgdorferi sensu stricto (OspA(B31)) and a chimeric protein containing sequences from B. burgdorferi and B. afzelii (OspA(BPBPk)). Immunogenicity and vaccine efficacy were analyzed in C3H-HeN mice after prime-boost intranasal (IN) vaccination with PIV5-OspA(B31) and PIV5-OspA(BPBPk), subcutaneous (SC) vaccination with rOspA(B31)+Alum as well as the respective controls. Mice vaccinated with either PIV5-A(B31) or PIV5-A(BPBPk) intranasally had high endpoint titers of serum antibody against OspA antigen beyond 1 year post vaccination, similar to levels detected in mice vaccinated SC with rOspA(B31). Flowcytometric analysis of spleen cells at 9-months post-immunization demonstrated that immunization with the intranasal PIV5 vaccine candidates led to an overall increase in the number of memory B cells, cytotoxic T and cytotoxic effector T cells compared to SC groups. Borreliacidal activity measured by neutralization assay was maintained up to 18 months post-immunization, with the response greater in intranasal PIV5-delivered OspA vaccines, than that induced by SC rOspA(B31). Challenge with infected ticks (10-19 strains of B. burgdorferi) performed at 4-, 9- or 15-months post-immunization showed increased breakthrough infections in mice vaccinated with SC rOspA(B31) compared to IN PIV5-A(B31) or IN PIV5-A(BPBPk) at 9- and 15-months, as determined by qPCR of B. burgdorferi in tissues, culture of B. burgdorferi from tissues, and antibodies against B. burgdorferi protein VIsE. These data demonstrate that intranasal PIV5-based immunization is superior to parenteral immunization with the same recombinant protein and provides long-lasting protection (> 1 year) against Lyme disease. FAU - Gingerich, Maria Cristina AU - Gingerich MC AD - Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, USA. AD - CyanVac, LLC, Athens, GA, USA. FAU - Nair, Nisha AU - Nair N AD - Department of Microbiology, Immunology, and Biochemistry, University of Tennessee Health Science Center, Tennessee, USA. FAU - Azevedo, J Filipe AU - Azevedo JF AD - Department of Microbiology, Immunology, and Biochemistry, University of Tennessee Health Science Center, Tennessee, USA. AD - Immuno Technologies, Inc., Memphis, TN, USA. FAU - Samanta, Kamalika AU - Samanta K AUID- ORCID: 0000-0001-6456-601X AD - Department of Microbiology, Immunology, and Biochemistry, University of Tennessee Health Science Center, Tennessee, USA. FAU - Kundu, Suman AU - Kundu S AD - Department of Microbiology, Immunology, and Biochemistry, University of Tennessee Health Science Center, Tennessee, USA. AD - Immuno Technologies, Inc., Memphis, TN, USA. FAU - He, Biao AU - He B AD - Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, USA. AD - CyanVac, LLC, Athens, GA, USA. FAU - Gomes-Solecki, Maria AU - Gomes-Solecki M AUID- ORCID: 0000-0002-3715-4543 AD - Department of Microbiology, Immunology, and Biochemistry, University of Tennessee Health Science Center, Tennessee, USA. AD - Immuno Technologies, Inc., Memphis, TN, USA. LA - eng GR - R01 AI139267/AI/NIAID NIH HHS/United States GR - R43 AI155211/AI/NIAID NIH HHS/United States GR - R44 AI167605/AI/NIAID NIH HHS/United States PT - Preprint DEP - 20230718 PL - United States TA - Res Sq JT - Research square JID - 101768035 UIN - NPJ Vaccines. 2024 Feb 15;9(1):33. PMID: 38360853 PMC - PMC10371166 COIS- Ethics Declarations / Competing Interests MGS is the President and CEO of Immuno Technologies, Inc. BH is President and CEO of CyanVac, LLC and holds patents that covers use of PIV5 vaccine delivery vectors. The other authors have no competing interests. EDAT- 2023/07/28 06:42 MHDA- 2023/07/28 06:43 PMCR- 2023/07/26 CRDT- 2023/07/28 04:26 PHST- 2023/07/28 06:42 [pubmed] PHST- 2023/07/28 06:43 [medline] PHST- 2023/07/28 04:26 [entrez] PHST- 2023/07/26 00:00 [pmc-release] AID - rs.3.rs-3143132 [pii] AID - 10.21203/rs.3.rs-3143132/v1 [doi] PST - epublish SO - Res Sq [Preprint]. 2023 Jul 18:rs.3.rs-3143132. doi: 10.21203/rs.3.rs-3143132/v1.