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Hemagglutinin-Based Polyanhydride Nanovaccines Against H5n1 Influenza Elicit Protective Virus Neutralizing Titers And Cell-Mediated Immunity., Kathleen A. Ross, Hyelee Loyd, Wuwei Wu, Lucas Huntimer, Shaheen Ahmed, Anthony R. Sambol, Scott Broderick, Zachary Flickinger, Krishna Rajan, Tatiana K. Bronich, Surya Mallapragada, Michael J. Wannemuehler, Susan Carpenter, Balaji Narasimhan

Journal Articles: Pharmaceutical Sciences

H5N1 avian influenza is a significant global concern with the potential to become the next pandemic threat. Recombinant subunit vaccines are an attractive alternative for pandemic vaccines compared to traditional vaccine technologies. In particular, polyanhydride nanoparticles encapsulating subunit proteins have been shown to enhance humoral and cell-mediated immunity and provide protection upon lethal challenge. In this work, a recombinant H5 hemagglutinin trimer (H5₃) was produced and encapsulated into polyanhydride nanoparticles. The studies performed indicated that the recombinant H5₃ antigen was a robust immunogen. Immunizing mice with H5₃ encapsulated into polyanhydride nanoparticles induced high neutralizing antibody titers and enhanced CD4(+) T …