Covidity Trial Update20 Dec 2022 20:18
Talking about this at the AGM Lindy said “We were hoping to do this by the end of the year but we will probably just get into January before we report there”.
The following article points to the Covidity update being very interesting:-
https://www.insideprecisionmedicine.com/drug-discovery/the-dawn-of-next-generation-covid-19-vaccines/
“The nucleocapsid protein is a structural protein with an integral role in viral assembly and the packaging of genetic material (Figure 1). It is 90% conserved between SARS-CoV-1 and SARS-CoV-2, compared to 76% for the spike protein. These two features combined make it a very promising target for vaccine design”.
“Added to this is the fact the nucleocapsid protein has been shown to elicit a powerful T cell response. Where B cells produce antibodies that can bind to viral particles before they enter cells, T cells are in charge of destroying host cells already infected with the virus; the stronger the T cell response, the better the body can contain the spread of the virus and clear the infection. Analyses of people infected with SARS-CoV-1 have indicated that N-specific T cell immunity can be very long lasting, with some individuals retaining memory T cells up to 17 years after initial infection. These same T cells managed to recognize the SARS-CoV-2 nucleocapsid protein, mounting a quick and specific immune response”.
“Indeed, research published in Science Translational Medicine corroborates this, suggesting an mRNA vaccine that targets both the SARS-CoV-2 spike protein (S) as well as the nucleocapsid protein (N) may offer stronger and broader protection than current, spike-only vaccines”.
Hamster models: “To further test the breadth of the immune response elicited by the mRNA-N+S vaccine, Hajnik et al. exposed hamsters to the Omicron variant (BA.1). At two micrograms, the spike-only vaccine induced modest viral clearance from the lungs; a 12-fold reduction in viral RNA copies two days after infection. The mRNA-N+S vaccine, in contrast, managed to completely clear viral RNA copies from the lungs by day two of the infection”.
“Intradermal delivery holds a few distinct advantages”.
“A recent study comparing intradermal and intramuscular administration of the SARS-CoV-2 receptor binding domain (RBD) confirmed as much, describing improved T cell responses after injection into the dermis”.
“Needle-free delivery also nullifies the possibility of needle reuse and subsequent cross contamination, which continues to be a commonplace issue in many parts of the globe, with up to 1.3 million deaths a year attributed to such practices”.