The canonical role of messenger RNA (mRNA) is in protein coding and synthesis. But could mRNAs also have a role that is related to their ability to compete for microRNA binding? Here, the functional relationship between the mRNAs produced by the PTEN tumour suppressor gene and its pseudogene PTENP1 is investigated. The results suggest that pseudogenes have a biological function, in sequestering microRNAs and so affecting their regulation of gene expression.
- Laura Poliseno
- Leonardo Salmena
- Pier Paolo Pandolfi