IMMUNOPRECISE ANTIBODIES LTD. (“IPA”) (TSXV: IPA) (IPATD: IPA) (FSE: TQB), a leader in full-service, therapeutic antibody discovery and development and LiteVax BV (Oss, the Netherlands), today announced the nomination of a lead vaccine for further (pre-) clinical evaluation and development based on results from their collaborative preclinical immunogenicity study.
VICTORIA, BC, Dec. 14, 2020 /PRNewswire/ - IMMUNOPRECISE ANTIBODIES LTD. (“IPA”) (TSXV: IPA) (IPATD: IPA) (FSE: TQB), a leader in full-service, therapeutic antibody discovery and development and LiteVax BV (Oss, the Netherlands), today announced the nomination of a lead vaccine for further (pre-) clinical evaluation and development based on results from their collaborative preclinical immunogenicity study. IPA and LiteVax selected the vaccine candidate following an assessment of the immunogenicity profiles of multiple SARS-CoV-2 vaccine candidates, each having an empirically designed, single SARS-CoV-2 spike protein segment, in non-rodent species. Using IPA’s extensive data sets, candidates were screened and optimized to maximize the inclusion of functional, antigenic, epitopes while simultaneously minimizing the total foreign epitope exposure, thereby potentially reducing long-term, negative side effects. Immunization of swine with a low dose of the selected candidate resulted in significant serum reactivities towards the SARS-CoV-2 spike protein segment. Furthermore, select formulations were adjuvanted with LiteVax’s novel class of carbohydrate derivative-based adjuvant to evaluate the potential benefit of co-formulation. When compared to non-adjuvant formulations, the combination with LiteVax’s adjuvant induced substantially higher immune responses. No adverse effects were observed for any of the treatment groups. This study was held at IRTA, (Catalonia, Spain) and supported by TRANSVAC2, a vaccine research and development (R&D) infrastructure that aims to accelerate the development of safe, effective and affordable vaccines (EC-funded project, grant agreement N° 730964). “We are inspired by the positive results from our initial preclinical studies evaluating the potential of PolyTope therapies as single-low-dose vaccines for diseases such as SARS-Cov-2. In these studies, our newly selected vaccine formulation demonstrated significant antibody responses towards the full SARS-Cov-2 spike timer following a single injection, an effect that was enhanced through co-formulation with LiteVax’s adjuvant,” stated Ilse Roodink, Global Project Lead for the Company’s Coronavirus programs. “By leveraging a data-driven approach to the design of the SARS-CoV-2 spike protein, we are able to minimize unnecessary exposure while optimizing efficacy and are confident that we are nominating the best possible candidate from this study for continued development. We look forward to progressing this partnership and to continuing to learn about the potential of this unique collaboration to provide a safe, effective, vaccine for at-need patients. Viral neutralization potency screening of the induced immune responses is scheduled for January. IPA and LiteVax also anticipate initiating additional, parallel preclinical studies to evaluate the durability and efficacy of immune responses in large non-rodents in more detail, as well as in a SARS-CoV-2 Syrian hamster model. About TRANSVAC TRANSVAC2 has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement N° 730964. About LiteVax About IRTA About ImmunoPrecise Antibodies Ltd. About IPA’s SARS Polytope™ Therapies Forward Looking Information Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release. SOURCE ImmunoPrecise Antibodies View original content to download multimedia:http://www.prnewswire.com/news-releases/immunoprecise-and-litevax-advance-sars-cov-2-vaccine-candidate-301191989.html SOURCE ImmunoPrecise Antibodies Ltd. | ||
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