The cells in question are tumor cells. If this is true then you could inject mRNA vaccine and tumor cells would take up the mRNA and the antigen the cells woul

The cells in question are tumor cells. If this is true then you could inject mRNA vaccine and tumor cells would take up the mRNA and the antigen the cells would display would be useful to lead T-cells to destroying the tumor cells. The authors just discovered an antitumor activity of vaccines. Although probably not. And this study likely has no relevance to your biology.