Adjuvanted Corn Nanoparticle Enhances the Breadth of Inactivated
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Poly(I:C) adjuvanted corn nanoparticle enhances the breadth of inactivated influenza virus vaccine immune response in pigs Thesis Presented in Partial Fulfillment of the Requirements for the Degree Master of Science in the Graduate School of The Ohio State University By Ninoshkaly Feliciano Ruiz, B.S. BiomedSc Graduate Program in Comparative and Veterinary Medicine The Ohio State University 2020 Thesis Committee Dr. Renukaradhya J. Gourapura, Advisor Dr. Feng Qu Dr. Scott P. Kenney 1 Copyrighted by Ninoshkaly Feliciano Ruiz 2020 2 Abstract Influenza A virus (IAV) is known for causing respiratory viral infections in a broad spectrum of birds and mammals, including humans and pigs. Pig acts as a mixing vessel for the generation of new reassortant IAV viruses of pandemic potential, like the 2009 H1N1 virus strain. The most common method to control of IAV in farms is by the intramuscular (IM) immunization of pig with killed multivalent IAV vaccine. However, IM immunization induces poor mucosal secretory IgA (SIgA) antibody response in the airways and thus confers highly variable levels of protection. Intranasal (IN) immunization studies using nanoparticle-based IAV vaccines in pigs have shown to increase the specific mucosal SIgA antibody response, cell-mediated immune response and enhances the production of pro-inflammatory cytokines. In this study, we overview the pig immune system to fight IAV infections, different vaccination strategies and several adjuvants that have been tested in pig against swine influenza. Recently, we develop and characterized a sweet corn-derived cationic alpha-D-glucan nanoparticle (Nano-11) and established its adjuvant potential in mice and pigs. With the objective of improving cross-reactivity of the Nano-11 based killed IAV antigens (Nano-11-KAg) vaccine induced immune responses, in this study, we assessed the combinatorial effect Nano-11 adsorbed with both KAg and a secondary adjuvant poly(I:C) Nano-11-KAg- poly(I:C) in induction of the mucosal and systemic immune responses and efficacy ii against a heterologous IAV challenge infection in pigs. Our data showed that Nano-11- KAg-poly(I:C) vaccine elicited cross-reactive SIgA production in the nasal passage and lungs and IgG antibody in the lungs against vaccine virus (H1N2-OH10), challenge virus (H1N1-OH7), and a heterosubtypic H3N2-OH4 SwIAV. In addition, Nano-11-KAg- poly(I:C) vaccine augmented mRNA expression of the cytokines IL-2, IL-6, IL-10, IL- 13, and TNF-α, and the transcription factor GATA3 in tracheobronchial lymph nodes compared to a commercial multivalent SwIAV vaccine. Also, Nano-11-KAg-poly(I:C) elicited high levels of virus neutralizing antibodies in bronchoalveolar lavage fluid and the frequency of IFNγ secreting γδ T cells. However, reduction in microscopic lung lesions and heterologous challenge virus load in both the Nano-11-KAg and commercial vaccine received animals was partial. In summary, compared to our earlier study using Nano-11-KAg vaccine, addition of poly(I:C) improved the cross-reactive antibody and cytokine responses in intranasal immunized pigs. Future studies will be aimed at improving the breadth of immunity of Nano-11-KAg vaccine using KAg of multivalent SwIA strains in pigs. iii Acknowledgments First of all, I want to thank my advisor Dr. Gourapura for his support and guidance during the past two years. I met Dr. Gourapura two years before starting my master's degree as an undergrad student through the Summer Research Opportunity Program (SROP) during summer 2016 and 2017. Many things happened in my life before starting the program at OSU that led me to wonder if I could come and study in the United States. In my last semester of bachelor (2017), the University of Puerto Rico participated in a national strike for four months, causing a delay in the graduation date. Then on September 20, 2017, Puerto Rico was hit by a category 5 hurricane, called María an atmospheric event that changed our lives forever. During the emergency, I wondered if it was still possible to finish my OSU application on time because in PR everything was paralyzed, we had neither electricity, water nor internet, my hopes of taking the GRE exam and finishing my undergrad coursework on time were fading. As soon as I got a signal on my cell phone, I wrote an email to Dr. Gourapura to let him know the situation. I also called Pamela Thomas (SROP manager) to let her know that I was still interested in grad school and if she could help me in the process. Thanks to the help of Dr. Gourapura and Pamela, today, I am closer to achieving my goal to complete my master's degree in the Comparative and Veterinary Medicine Program. iv I will always be grateful to Dr. Santosh Dhakal, a Ph.D. student in Dr. Gourapura’s Lab. Santosh played a crucial role in my training as a student. He taught me how to correctly use a pipette all the way until how to draw blood from pigs and extract the immune cells. I also want to thank Shristi Ghimire (past lab technician in our lab) for her help in the laboratory and for being that key person that took my hand when my world crashed to the floor when I almost lost my father due to a heart attack. I thank my coworkers Dr. Sankar Renu, Ph.D. student Yi Han and Jennifer Schrock, for their help during animal trials, for making the lab more enjoyable and for light moments when the experiments did not work, and results were not as expected. My appreciation also goes to the animal care staff Dr. Juliette Hanson, Sara Talmadge, Megan Strother, and the department secretary staffs Hannah Gehman and Robin Weimer. Food Animal Health Research Program (FAHRP) is a small department with few students where we share similar experiences in the labs. That is why I want to thank the graduate students KC, Kush, Abundo, and Gary for sharing their advice regarding academic writing, to help me find housing in Columbus, suggestions for my master's coursework, and for cheers and unplanned group therapies during our graduate studies. Wooster has given me beautiful experiences and friendship that will last forever. Outside the scope of the laboratory, I want to thank my friends Edna and Adriana Alfaro for being like my sisters and making me feel at home. I also include Camila, Lourdes, Seyed Hashem, Yosmer, and Erick for planning the adventures and parties that cheered our weekends. I also recognized the efforts of my family, especially my parents and my grandparents, who came to visit me or bought me the flight ticket for a weekend so I v could spend time with them. Thanks to all who in one way or another have helped me during this time, and I hope to continue with my studies always with God ahead. vi Vita 2013-2017……...................B.S., Biomedicine, University of Puerto Rico at Ponce May 2018 to present ..........M.S. Comparative and Veterinary Medicine (CVM), The Ohio State University Publications 1. Renu S*, Feliciano-Ruiz N*, Ghimire S, Han Y, Schrock J, Dhakal S, Patil V, Krakowka S, Renukaradhya G.J. (2020). Poly(I:C) adjuvanted corn nanoparticle enhances the breadth of inactivated influenza virus vaccine immune response in pigs. Manuscript submitted to Frontiers in immunology. *contributed equally 2. Renu S, Feliciano-Ruiz N, Ghimire S, Han Y, Schrock J, Dhakal S, Patil V, Krakowka S, Renukaradhya G.J. (2020). Poly(I:C) augments inactivated influenza virus-chitosan nanovaccine induced cell mediated immune response in pigs vaccinated intranasally, Veterinary Microbiology, doi: https://doi.org/10.1016/j.vetmic.2020.108611 3. S. Dhakal, S. Renu, S. Ghimire, Y.S. Lakshmanappa, B.T. Hogshead, N. Feliciano-Ruiz, F. Lu, H. HogenEsch, S. Krakowka, C.W. Lee, G.J. Renukaradhya. (2018). Mucosal Immunity and Protective Efficacy of Intranasal vii Inactivated Influenza Vaccine is Improved by Chitosan Nanoparticle Delivery in Pigs. Frontiers in Immunology; 2018; 9: 934. 4. Dhakal, S., Cheng, X., Salcido, J., Renu, S., Bondra, K., Lakshmanappa, Y. S., Misch, C., Ghimire, S., Feliciano-Ruiz, N., Hogshead, B., Krakowka, S., Carson, K., McDonough, J., Lee, C. W. and Renukaradhya, G. J. (2018). Liposomal nanoparticle-based conserved peptide influenza vaccine and monosodium urate crystal adjuvant elicit protective immune response in pigs. Int J Nanomedicine, 13, 6699-6715. doi:10.2147/IJN.S178809. Fields of Study Major Field: Comparative and Veterinary Medicine Immunology and Vaccine Development viii Table of Contents Abstract .......................................................................................................................... ii Acknowledgments ......................................................................................................... iv Vita .............................................................................................................................. vii Table of Contents .......................................................................................................... ix List of Tables................................................................................................................xiv List of Figures ............................................................................................................... xv Chapter 1. Introduction ....................................................................................................1 1.1 Influenza A virus ...............................................................................................1 1.1.1 IAV nomenclature ..........................................................................................2 1.1.2 IAV structure