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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/121770
Hippo signaling controls cell cycle and restricts cell plasticity in planarians.
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Constant cell renewal is required to maintain healthy organs during adult homeostasis. The highly conserved Hippo signaling pathway is essential for the regulation of basic cell behaviors that underlie tissue renewal, including cell proliferation, cell differentiation, and cell death. The Hippo protein has been implicated in several human cancers, and its inhibition in mouse and Drosophila promotes the formation of overgrowths. Nonetheless, its biological function remains poorly understood. To address this issue, we studied the role of Hippo in planarians, flatworms that continuously alter their size depending on nutrient availability, and therefore have a high rate of cellular turnover. This ability is sustained by an abundant population of adult totipotent stem cells. We show that hippo inhibition in planarians decreases apoptotic cell death, impairs cell progression through the cell cycle, and causes instability of the differentiated cell fate. These events ultimately lead to the formation of overgrowths consisting of undifferentiated cells. We propose that the main role of Hippo in planarians is not to promote proliferation but to control the cell cycle and maintain a stable differentiated cell fate.
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SOUSA, Nidia de, RODRÍGUEZ ESTEBAN, Gustavo, ROJO LAGUNA, José ignacio, SALÓ I BOIX, Emili, ADELL I CREIXELL, Teresa. Hippo signaling controls cell cycle and restricts cell plasticity in planarians.. _PLoS Biology_. 2018. Vol. 16(1):e2002399. [consulta: 23 de gener de 2026]. ISSN: 1544-9173. [Disponible a: https://hdl.handle.net/2445/121770]