There are four types of COVID-19 vaccines part 12

How do nucleic acid vaccines trigger immunity?

In the case of DNA vaccines, a piece of DNA encoding the antigen is first inserted into a bacterial plasmid. This is a circular piece of DNA used by a bacterium to store and share genes which may benefit its survival-a bit like a computer flash drive. Plasmids can replicate independently of the main chromosomal DNA and provide a simple tool for transferring genes between cells. Because of this, they are already widely used within the field of genetic engineering.

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1 Response to There are four types of COVID-19 vaccines part 12

  1. This is very interesting! I read about mRNA vaccines but the DNA vaccine was new. While reading more about it, I learned that it uses plasmids, similar to the ones used in DNA fragment cloning, to insert DNA fragments into the cells via techniques like transfection. I’m just hoping that the DNA fragment doesn’t get incorporated into the non-target cells’ DNA like via the lysogenic cycle.


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