Scientists have known about a small molecule called queuosine, or Q, for decades, but never understood exactly how it works. Bluetools researchers have now uncovered its role, and the discovery could help explain why cancer cells lose control of their own growth.
Q sits inside the machinery that reads genetic instructions and builds proteins. It acts like a proofreader, checking that nothing goes wrong. In healthy cells, Q is always present and working. In cancer cells, it often is not, and the proofreading stops.
Researchers found that without Q, two key proteins, p53 and Akt, stop working properly. Both normally keep cell growth in check, so their loss can lead to uncontrolled growth. Q deficiency alone may not cause cancer, but its absence weakens the mechanisms that normally prevent tumours from developing.
Q also matters beyond human health. In bacteria, it controls the protective shields that let pathogens cause disease. Remove Q, and those shields fall apart, meaning we could disarm bacteria instead of killing them.
The Bluetools team is now mapping which genes depend on Q, and what happens when it disappears. Watch the video below to see how the discovery unfolds.