BACKGROUND. I am not a molecular biology expert. I am a retired rheumatologist who dealt with autoantibodies and autoimmune diseases. Rheumatology has been caught up in COVID-19 business via often misguided appropriation of its treatments (hydroxychloroquine, corticosteroids, biologics and colchicine), via patients being sometimes deprived of those treatments because back ordered (rheumatoid arthritis, systemic lupus erythematosus) and via COVID-19 syndromes mimicking rheumatic diseases (Kawasaki in children, anti-phospholipid/lupus/vasculitis and other autoimmune syndromes in adults)
RATIONALE. Currently there are two types of anti-COVID vaccines: the novel, viral-mRNA-driven approach and the classical, viral-protein-driven approach. In the mRNA scheme, delivery of functional mRNA to macrophages, its use to make viral spike protein and its rapid degradation are all within current theory. A marvellous technological achievemen!
QUESTIONS.. What is known about the intracellular processing and migration towards the cell surface of the auto-produced spike protein, about its membrane incorporation and about its presentation as an antigen? Is there any self-membrane moiety wether lipid or protein linked to the spike protein polypeptide? Is there any spike protein shedding and then, does it behave as a regular protein vaccine? While on the cell surface or while shedded, are there neoantigens created which would be part auto, part exo-antigen?
IN SHORT, is there any possibility or evidence of inducing downstream, weeks or months post mRNA vaccine, new auto-immun phenomena or diseases? Currently, there is little or no data to support my worries and, as far as I know, there are no plans to collect any long term follow-up data,. Should there be some? Replacing the COVID-19 pandemic by a man made autoimmune disaster would be the ultimate victory of this most devious virus.
I welcome reassuring thoughts, scientific data, clinical observations or comments?