Abstract

Entry of SARS-CoV-2 into the central nervous system (CNS) activates microglia, triggering chronic neuroinflammation and possibly neurodegeneration. The complex transcriptome of SARS-CoV-2 shares molecular similarities with diverse human CNS protein epitopes, leading to a cytokine storm and various autoantibodies, potentially culminating in an autoimmune state. A COVID-19 initiated CNS autoimmune cascade may occur via multiple pathways including molecular mimicry, bystander activation, epitope spreading, production of autoantibodies, and immortalization of effector B-cells.

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