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RNA creates a self-destruct switch for cellular machinery linked to leukemia
Cells have all kinds of intricate machinery to control genes, switching them on and off at the right times and under the right conditions.
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Scientists have identified a new RNA‑based mechanism that can trigger the destruction of the MLL1 chromatin‑modifying complex, a key regulator of growth and development genes such as the HOX family. The MLL1 complex controls how tightly DNA is packaged in the nucleus, influencing gene accessibility for transcription. Mutations in genes encoding MLL1 components are linked to acute myeloid leukemia, particularly in young children. Understanding how this RNA‑mediated self‑destruct switch operates may reveal why MLL1 dysfunction contributes to cancer.
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