Combined mutations in nonstructural protein 14, envelope, and membrane proteins mitigate the neuropathogenicity of SARS-CoV-2 Omicron BA.1 in K18-hACE2 mice.

Abstract excerpt

We previously reported that mutations outside the spike protein play a role in the attenuation of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron BA.1 variant in human ACE2 transgenic mice (K18-hACE2). Here, we assessed the pathogenicity of SARS-CoV-2 (WA1/2020) containing mutations from the Omicron BA.1 variant in K18-hACE2 mice. At an infection dose of 104 plaque-forming units (PFU),...

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