Small RNAs Drive Major Cancer Type Toward Quiet State

Rhabdomyosarcoma (RMS) is a type of cancer found in children's muscles. It's often undeveloped because certain controls in cells go haywire. In this cancer, two tiny RNAs, called miR-449a and miR-340, were found to be key players. They control how fast cells grow and change, and also affect a protein called p53. Using a special tool called miR-eCLIP, scientists showed that these RNAs directly target parts of cells involved in energy production. They found that these targets, involved in a process called glycolysis and mitochondrial pyruvate transport, are turned off by the RNAs.

This means cells can't use energy as effectively, leading them to slow down and potentially become harmless. When these targets were intentionally blocked with drugs, the same thing happened: the cancer cells calmed down and lost their ability to spread. This shows that focusing on these tiny RNAs and their targets could be a new way to stop this type of cancer from growing and spreading.

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