Celsion Reports T-cell and B-cell Response from In Vivo Studies with its PLACCINE DNA Vaccine Platform
Results Indicate Induction of Adaptive Immune Response Against SARS-CoV-2
Company Plans Additional Development Work to Further Optimize its Vaccine Platform Through Vector Compositions, Delivery Route, Dosing and Dosing Frequency, and Use of Molecular Adjuvant
These findings demonstrate the potential immunogenicity of Celsion’s PLACCINE DNA vaccine, which is intended to provide broad-spectrum protection and resistance against variants by incorporating multiple viral antigens, to improve vaccine stability at storage temperatures of 4o C and above, and to facilitate cheaper and easier manufacturing.
“In an effort to establish a suite of platform technologies, we have produced and characterized a family of DNA vaccine vectors expressing one or more SARS-CoV-2 surface antigens or proteins with or without immune modifiers or agents to improve vaccine quality,” said
“Importantly, based on our experience with GEN-1, our DNA plasmid immunotherapy, we fully expect that our platform will be both cost-effective and scalable, allowing for stability across a reasonable and readily achievable temperature range that addresses global vaccine storage and distribution needs. A successful proof of concept using mRNA vaccines as a standard will provide
About the PLACCINE platform
PLACCINE is Celsion’s proprietary plasmid and DNA delivery technology and the subject of a provisional patent application that covers a broad range of next-generation DNA vaccines. An adaptation of the Company’s TheraPlas technology, PLACCINE is a DNA vaccine technology platform characterized by a single plasmid DNA with multiple coding regions. The plasmid vector is designed to express multiple pathogen antigens along with a potent immune modifier. It is delivered via a synthetic delivery system and has the potential to be easily modified to create vaccines against a multitude of infectious diseases, addressing:
- Viral Mutations: PLACCINE may offer broad-spectrum and mutational resistance (variants) by targeting multiple antigens on a single plasmid vector.
- Enhanced Efficacy: The potent immune modifiers such as cytokines and chemokines may improve humoral and cellular responses to viral antigens and can be incorporated in the plasmid.
- Durable Efficacy: PLACCINE delivers a DNA plasmid-based antigen that can result in durable antigen exposure and a robust vaccine response to viral antigens.
- Storage & Distribution: PLACCINE allows for stability that is compatible with manageable vaccine storage and distribution.
- Dosing & Administration: PLACCINE is a synthetic delivery system that should require a simple injection that does not require viruses or special equipment to deliver its payload.
Forward-looking statements in this news release are made pursuant to the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995. Readers are cautioned that such forward-looking statements involve risks and uncertainties including, without limitation, statements relating to the offering and the use of proceeds therefrom, unforeseen changes in the course of research and development activities and in clinical trials; the uncertainties of and difficulties in analyzing interim clinical data, particularly in small subgroups that are not statistically significant; FDA and regulatory uncertainties and risks; the significant expense, time and risk of failure of conducting clinical trials; the need for
Executive Vice President and CFO
LHA Investor Relations
Source: Celsion CORP