A peptide derived from the SARS-CoV-2 S1 spike protein, named P3, can stimulate a significant portion of human T cells.
This stimulation leads to increased production of inflammatory cytokines and granzyme B.
“An important paper!
We keep focusing on Spike protein-only vaccines -> to our peril
It’s the 1 protein w the #1 MOST reasons to mutate!
Many parts of the virus also drive robust immune protection
Tmrws vaccines should focus on non-Spike to reduce variant immune evasion”
“Neither vaccinations nor immunity from infections seem to thwart SARS-CoV-2 for long. The frequency of new infections within a few months of a previous bout or a shot is one of COVID-19’s most vexing puzzles. Now, scientists have learned that a little-known type of immune cell in the bone marrow may play a major role in this failure.
The study, which appeared last month in Nature Medicine, found that people who received repeated doses of vaccine, and in some cases also became infected with SARS-CoV-2, largely failed to make special antibody-producing cells called long-lived plasma cells (LLPCs). “
“Neither (MRNA) vaccinations nor immunity from infections seem to thwart SARS-CoV-2 for long. The frequency of new infections within a few months of a previous bout or a shot is one of COVID-19’s most vexing puzzles. Now, scientists have learned that a little-known type of immune cell in the bone marrow may play a major role in this failure.
The study, which appeared last month in Nature Medicine, found that people who received repeated doses of vaccine, and in some cases also became infected with SARS-CoV-2, largely failed to make special antibody-producing cells called long-lived plasma cells (LLPCs).
All study participants had received between two to five doses of messenger RNA (mRNA) COVID-19 vaccines—which code for SARS-CoV-2’s spike—during the preceding 3 years.
