Inhibition of Hippo signalling disrupts germinative cell-cycle progression and larval development in Echinococcus multilocularis

In Echinococcus multilocularis metacestode larvae, inhibiting Hippo signaling via emyorkie knockdown or XMU-MP-1 disrupts germinative cell-cycle-associated processes and larval development.

• Why it matters: Germinative cells drive sustained infiltrative growth, but proliferation and differentiation must stay coordinated; Hippo signaling is a conserved regulator yet its role in this parasite was unclear.
• What they did: The study mapped canonical Hippo components, including a divergent Yorkie ortholog, and tested EmYorkie–EmScalloped interaction; it then used RNA interference against emyorkie and treated larvae with XMU-MP-1, comparing effects to MLN8237.
• The result: emyorkie RNA interference enhanced metacestode vesicle formation without increased EdU incorporation at the examined time, while XMU-MP-1 caused germinative-cell enlargement and multinucleation, with some cells retaining DNA synthesis despite absent phospho-histone H3 staining.

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