Messenger RNA (mRNA) vaccines to prevent COVID-19 have
made headlines around the world recently, but scientists have also
been working on mRNA vaccines to treat or prevent other diseases,
including some forms of cancer. Now, researchers reporting in ACS’
Nano Letters have developed a hydrogel that, when injected into
mice with melanoma, slowly released RNA nanovaccines that shrank
tumors and kept them from metastasizing.