Remarks: “These positive preclinical results from our COVID-19 DNA vaccine (INO-4800) not only highlight the potency of our DNA medicines platform, but also build on our previously reported positive Phase 1/2a data from our vaccine against the coronavirus that causes MERS, which demonstrated near-100% seroconversion and neutralization from a similarly designed vaccine INO-4700.” FULL STORY HERE: https://www.4cmitv.com/2020/09/25/2020-may-20-inovios-covid-19-dna-vaccine-ino-4800-demonstrates-robust-neutralizing-antibody-and-t-cell-immune-responses-in-preclinical-models/
EXERT: “These positive preclinical results from our COVID-19 DNA vaccine (INO-4800) not only highlight the potency of our DNA medicines platform, but also build on our previously reported positive Phase 1/2a data from our vaccine against the coronavirus that causes MERS, which demonstrated near-100% seroconversion and neutralization from a similarly designed vaccine INO-4700. The potent neutralizing antibody and T cell immune responses generated in multiple animal models are supportive of our currently on-going INO-4800 clinical trials.”
INO-4800 targets the major surface antigen Spike protein of SARS-CoV-2 virus, which causes COVID-19 disease.
The studies demonstrated that vaccination with INO-4800 generated robust binding and neutralizing antibody as well as T cell responses in mice and guinea pigs.
Importantly, the authors demonstrated virus neutralizing activity using three separate neutralization assays testing the vaccine’s ability to generate antibodies which can block virus infection by: 1) an assay using live SARS-CoV-2 viruses; 2) an assay using a pseudo-virus assay, where another virus displays the SARS-CoV-2 Spike protein; and, 3) a novel high-throughput surrogate neutralization assay measuring the ability of INO-4800-induced antibodies to block SARS-CoV-2 Spike binding to the host ACE2 receptor.
Study authors also detected these antibodies in the lungs of the vaccinated animals which could be important in providing protection from SARS-CoV-2. In addition, high levels of Spike-specific T cell responses were observed with INO-4800 vaccination, which could be important in mediating protection from the virus infection. Collectively, this preclinical dataset demonstrates that INO-4800 is a promising COVID-19 vaccine candidate against this emerging disease threat.
Dr. J. Joseph Kim, INOVIO’s President & CEO, said, “INOVIO and our collaborators are working diligently to advance INO-4800 to help fight the current pandemic. We are planning to utilize these positive preclinical results along with our upcoming animal challenge data and safety and immune responses data from our Phase 1 studies to support rapidly advancing this summer to a large, randomized Phase 2/3 clinical trial.”
INOVIO’s swift progress in COVID-19 vaccine development is based on the ideal suitability of its DNA medicine platform to rapidly develop vaccines against emerging viruses with pandemic potential. INOVIO was the first to advance its DNA vaccine INO-4700 against MERS-CoV, a related coronavirus, into evaluation in humans in a collaboration with GeneOne Life Science and the Walter Reed Army Institute of Research.
INO-4700 is the only MERS-CoV vaccine with positive data from a Phase 1/2a clinical trial, and INOVIO is currently preparing to initiate a larger Phase 2 vaccine trial for INO-4700 in the Middle East where most MERS viral outbreaks have occurred. These efforts are supported by CEPI funding.
INOVIO Pharmaceuticals HEADLINES: INOVIO’s COVID-19 DNA Vaccine INO-4800 Demonstrates Robust Neutralizing Antibody and T Cell Immune Responses in Preclinical Models
IR.INOVIO.COM: May 20, 2020INOVIOs-COVID-19-DNA-Vaccine-INO-4800-Demonstrates-Robust-Neutralizing-Antibody-and-T-Cell-Immune-Responses-in-Preclinical-Models-2020
Hashtags: #4cminewswire, #DNAVaccine, #DNAMedicinesPlatform, #INOVIO, #INO4800, #GeneOne, #COVID19, #Covid19Vaccines, #Vaccines, #CarrieMadej, #4cminews, #4CMiTV, #4CM2020MAY20,
Tags: 4cminewswire, DNA Vaccine, DNA Medicines Platform, INOVIO, INO4800, GeneOne, COVID-19, COVID-19 Vaccines, Vaccines, Carrie Madej, 4cminews, 4CMiTV, #4CM2020MAY20,
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