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The COVID mRNA vaccine generates sufficient of an antibody response to guard towards extreme illness for six months. However different vaccines supply years-long — even lifelong — immunity, as is the case with the measles and yellow fever vaccines.
This distinction led Bali Pulendran, a professor of pathology and microbiology and immunology on the Stanford College College of Drugs, to surprise: Why? Why are some vaccines solely capable of stimulate immunity for just a few months, however others final a lifetime?
Now, his workforce at Stanford Drugs has a solution.
Via this fundamental analysis query, Pulendran and a workforce at Stanford Drugs uncovered a serious perception involving megakaryocytes, cells positioned in human bone marrow.
Megakaryoctyes are accountable for creating platelets, which play an important function in blood clotting. And, because the workforce found, megakaryocytes seem to play a job in immunity by making a hospitable atmosphere for B-cells. B-cells are important for exciting an immune response after vaccination. They accomplish that by producing antibodies, which acknowledge and battle germs.
The pondering is, vaccines which can be higher capable of activate megakaryocytes also needs to stimulate an immune response for an extended time period.
“If you happen to might perceive the immunology underlying these results, then absolutely we might apply that immunological perception to devising new vaccines,” he advised NPR’s Quick Wave podcast.
The workforce revealed these findings within the journal Nature Immunology this month.
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This episode was produced by Rebecca Ramirez and Megan Lim. It was edited by Rebecca Ramirez and Christopher Intagliata. Tyler Jones checked the info. Extra reporting by Regina Barber. The audio engineers had been Jimmy Keeley and Neil Tevault.