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Computer simulation identifies SARS-CoV-2 viral membrane protein as potential vaccine target
Rockville, Md. (April 15, 2021)—A new computational study suggests that a protein present in SARS-CoV-2, the virus that causes COVID-19, could be a target for future vaccines. The study is published ahead of print in the American Journal of Physiology-Lung Cellular and Molecular Physiology.
Increased inflammation that leads to a “cytokine storm”—in which the body attacks its own tissues—is a serious complication affecting many people with COVID-19. SARS-CoV, the virus that caused a global outbreak of severe acute respiratory syndrome in Asia in 2003, encodes three viral membrane proteins—called viroporins—that play a role in activating inflammatory responses of the immune system. Previous studies have shown that the Viroporin E of SARS-CoV-2 has 94.7% similarity with the Viroporin E of SARS-CoV, which increases the probability that the two proteins have similar functions. Additionally, it was found that mutations in one region of the SARS-CoV-2 E protein could provide the basis for live, weakened and inactivated vaccines.
The researchers of a new study used the Universal Protein Resource database to obtain the Viroporin E sequence of SARS-CoV-2 for in silico (computer-based) analysis. Computer modeling has “changed the field of vaccinology, providing a time- and cost-effective strategy that aims at very focused, evidence-directed experimental investigation,” the researchers of the new study wrote.
The Viroporin E of SARS-CoV-2 was identified as a “probable antigen”—a substance that is likely to trigger an immune response in the body. The predicted vaccine epitope candidates—the part of the antigen recognized by the immune system—were also found to fulfill prerequisites for vaccine safety. These findings “indicate that the SARS-CoV-2 viroporin E could serve as a promising vaccine target for this devastating disease,” the researchers wrote. However, “experimental data are required to validate the in silico estimates.”
Read the full article, “In silico investigation of the Viroporin E as a vaccine target against SARS-CoV-2,” published ahead of print in the American Journal of Physiology-Lung Cellular and Molecular Physiology.
NOTE TO JOURNALISTS: To schedule an interview with a member of the research team, please contact the APS Communications Office or call 301.634.7314. Find more research highlights in our Newsroom.
Physiology is a broad area of scientific inquiry that focuses on how molecules, cells, tissues and organs function in health and disease. The American Physiological Society connects a global, multidisciplinary community of more than 10,000 biomedical scientists and educators as part of its mission to advance scientific discovery, understand life and improve health. The Society drives collaboration and spotlights scientific discoveries through its 16 scholarly journals and programming that support researchers and educators in their work.
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