Prostate cancer often escapes hormone therapy by changing what kind of cell it is. Andrew Hsieh’s group at Fred Hutch traced part of that escape to transfer RNA. These small molecules ferry amino acids during protein synthesis. Most people treat tRNAs as background machinery. This work suggests they help steer the disease. The dose of a single tRNA helped decide whether tumors kept their original identity or slipped into a resistant, more aggressive state. Change the supply of that one molecule and the balance shifted. Hsieh calls it a meaningful new drug target, and suggests certain tRNAs could also flag which tumors will turn dangerous. The findings come from cell and animal work, so they still need testing in patients. I find it striking because it points at a layer of cancer biology that rarely gets attention. If it holds up, it opens a line of attack nobody was aiming at.
Source: Nature, 7 October 2026
