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SARS-CoV-2 , COVID-19

A large team of researchers affiliated with a host of institutions in the U.K. and Brazil has partially solved the mystery of why some people are less naturally resistant to COVID-19 than others. In their paper published in the journal Science, the group describes their study of the interferon system and the role it plays in combating the SARS-CoV-2 virus.

As the global pandemic has unfolded, it has become clear that some people have much more serious symptoms when contracting COVID-19 than others. Indeed, some people have been found to exhibit no symptoms at all, while others become so sick that they die. In this new effort, the researchers conducted extensive interferon-stimulated gene expression screening to isolate possible enzymes involved in alerting the immune system to an infection. Interferons are signaling proteins that alert the body when invasive entities such as bacteria and viruses are detected.

The work by the researchers led them to OAS1, 12 dick pills an enzyme that reacts to interferon signaling by calling for an immune response when the SARS-CoV-2 virus is detected. Prior research has shown that OAS1 attaches to membranes using a prenyl group as part of the signaling process. Prior research has also shown that this signaling can inhibit replication of the SARS-CoV-2 virus. Noting its value in protecting people against COVID-19, the researchers looked at the transcriptomes of 500 COVID-19 patients who had experienced a wide range of symptoms and found that those who did not have prenylated OAS1 experienced much more severe symptoms. Why some people are born without the enzyme is still a mystery, but the work by the team could help lead to new types of vaccines against COVID-19 and other types of infections.

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