This means that when circumstances say no you cant, biological entities find a work around.
as a cover your ass practice, even the smallest chance of occurence means non zero chance.
in this case an mRNA would have to be captured by a reverse transcription system most likely due to co-infection with a retro virus, that complex would have to be functional and would have to be transported into the nucleus.
this is a very remote chance but non zero, thus :
"minimizes potential risks of genetic transformation"
the RNA must interact with retroviral reverse transcriptase in a manner that makes a functional complex or it will just be snipped apart and decycled like garbage.
RNA will fold and produce 2' structure this has interesting consequence. catalytic RNA, structural RNA, stabilizing or protective RNA..
[0] https://www.youtube.com/watch?v=RYwVnzYf4V8
[1] https://pubmed.ncbi.nlm.nih.gov/20358252/
[2] https://sci-hub.st/https://doi.org/10.1007/s00018-010-0346-2 [PDF]
[3] https://www.researchgate.net/profile/Tania_Matamoros2/public... [PDF]
from the paper [3] above: "Reverse transcription initiates after binding of a cellular tRNA primer (in HIV-1, tRNA Lys,3 ), to the primer binding site (PBS). The PBS is a sequence of 18 nucleotides, located downstream of the 5’-end of the genomic RNA. The viral RNA that serves as template for reverse transcription is flanked by repeat (R) sequences at its 5 ́ and 3 ́ termini."
the vaccine mRNA does not meet these requirements.
retroviral RNA is configured to function with the reverse transcriptase. Promiscuity to include other RNA is exceptional not common.
virally infected cells also undergo changes that exclude further infection so they have the cell to themselves.
i would like to say zero chance, but life is in the business of sidestepping the rules to its advantage, however you have a much greater chance of being attacked by a shark while hiking the sahara dunes.
the situation was artificially created.
the retroviral Reverse Transcriptase must be present in the individual cells also infected with the covid virus.
> Moreover, mRNA vaccines induce transient antigen expression, while DNA vaccines provide a long-lasting expression, thus mimicking an acute viral infection. Although a transitory gene expression might be desirable as it minimizes potential risks of genetic transformation, this inevitably affects mRNA potency, thus necessitating a dose increase.
This means that mRNA reduce the risk of genetic transformation compared to DNA vaccines, but it comes as a price because you have to deliver a larger dose of mRNA.